Automatic edge aligning method, automatic edge aligning mechanism and readable storage medium

Abstract

The invention discloses an automatic edge aligning method, an automatic edge aligning mechanism and a readable storage medium, and relates to the technical field of textile sewing. The automatic edge aligning method comprises the following steps: separating two pieces of cloth, and respectively detecting and aligning the edges of the two pieces of cloth; if the sewing is planar sewing, the previous step is repeated until the splicing is completed; if the sewing is three-dimensional sewing, the previous step is repeated until the segmentation point of the last segment is sewn, the sewing is stopped, and the next step is executed; the two pieces of cloth are attached, and the edges of the two pieces of cloth are detected and aligned at the same time; and repeating the previous step until the splicing of the three-dimensional sewing is completed. According to the automatic edge aligning method, the two pieces of cloth are controlled to be aligned by detecting the edges of the cloth, and various technologies of splicing are met, including planar sewing and three-dimensional sewing.

Description

Technical Field

[0001] The present application relates to the field of textile sewing technology, and in particular to an automatic edge alignment method and an automatic edge alignment mechanism, and a readable storage medium. Background Art

[0002] Among all the garment sewing processes, the stitching process of sewing two pieces of fabric together (shoulder seams, side seams, sleeve sewing, etc.) accounts for the largest proportion. Seams can be roughly divided into two categories: flat seams and three-dimensional seams. Flat seams refer to the two pieces of fabric to be sewn can be laid flat and fully unfolded, and the seams are disconnected at the beginning and end (such as shoulder seams, side seams, etc.); three-dimensional seams refer to the process type where the starting point and end point of the stitching coincide (such as hems, sleeve sewing, etc.).

[0003] The automatic edge alignment method is a method for controlling the alignment of two pieces of fabric. The current automatic edge alignment method can only be applied to flat sewing, but not to three-dimensional sewing. Summary of the invention

[0004] The purpose of the present application is to provide an automatic edge alignment method and an automatic edge alignment mechanism, and a readable storage medium, which can control the alignment of two pieces of cloth by detecting the edges of the cloth, and meet various seam stitching processes, including flat sewing and three-dimensional sewing.

[0005] To achieve the above purpose, the present application provides an automatic edge alignment method, comprising:

[0006] Separate the two pieces of fabric and detect and align the edges of the two pieces of fabric respectively;

[0007] If it is a flat sewing, repeat the previous step until the seam is completed; if it is a three-dimensional sewing, repeat the previous step until the segmentation point of the last segment is sewn, then stop sewing and proceed to the next step;

[0008] Put two pieces of fabric together, and detect and align their edges at the same time;

[0009] Repeat the previous step until the three-dimensional sewing is completed.

[0010] In some embodiments, the steps of detecting and aligning the edges of the two pieces of fabric respectively include:

[0011] The upper edge position is detected by an upper edge sensor;

[0012] If there is upper fabric at the upper edge-matching position, the upper fabric is adjusted in a positive direction so that the edge of the upper fabric moves to the upper edge-matching position and then faces the rear edge; if there is no upper fabric at the upper edge-matching position, the upper fabric is adjusted in a negative direction so that the edge of the upper fabric moves to the upper edge-matching position and then faces the rear edge;

[0013] The position of the lower opposite side is detected by a lower opposite side sensor;

[0014] If there is lower fabric at the lower opposite edge position, the lower fabric is adjusted in a positive direction so that the edge of the lower fabric moves to the lower opposite edge position to the rear opposite edge; if there is no lower fabric at the lower opposite edge position, the lower fabric is adjusted in a negative direction so that the edge of the lower fabric moves to the lower opposite edge position to the rear opposite edge.

[0015] In some embodiments, the step of simultaneously detecting and aligning the edges of the two pieces of fabric includes:

[0016] The upper edge position is detected by an upper edge sensor;

[0017] If there are upper fabrics and lower fabrics at the upper edge-to-edge position, the edges of the upper fabrics and lower fabrics are positively adjusted to move to the upper edge-to-edge position for rear edge-to-edge; if there are no upper fabrics and lower fabrics at the upper edge-to-edge position, the upper fabrics and lower fabrics are negatively adjusted to move to the upper edge-to-edge position for rear edge-to-edge.

[0018] In some embodiments, the step of separating the two pieces of fabric includes:

[0019] The two pieces of fabric are separated by a spacer assembly, the upper fabric is pressed and moved by an upper side-to-side assembly on the upper side of the spacer assembly, and the lower fabric is pressed and moved by a lower side-to-side assembly on the lower side of the spacer assembly;

[0020] The step of laminating the two pieces of fabric comprises:

[0021] The spacer assembly is controlled to separate from the upper and lower side assemblies, and the upper and lower side assemblies are controlled to press and move the fitted upper and lower fabrics.

[0022] In some embodiments, after the step of separating the two pieces of fabric, the following steps are performed:

[0023] The edges of the two pieces of fabric are detected and corrected respectively.

[0024] In some embodiments, the steps of detecting and correcting the edges of the two pieces of fabric respectively include:

[0025] The upper deviation position is detected by the upper deviation correction sensor;

[0026] If there is upper fabric at the upper offset position, the upper fabric is adjusted in a positive direction so that the edge of the upper fabric moves to the upper offset position and then corrects the deviation; if there is no upper fabric at the upper offset position, the upper fabric is adjusted in a negative direction so that the edge of the upper fabric moves to the upper offset position and then corrects the deviation;

[0027] The lower deviation position is detected by the lower deviation correction sensor;

[0028] If there is lower fabric at the lower offset position, the lower fabric is adjusted in a positive direction so that the edge of the lower fabric moves to the lower offset position and then corrects the deviation; if there is no lower fabric at the lower offset position, the lower fabric is adjusted in a negative direction so that the edge of the lower fabric moves to the lower offset position and then corrects the deviation.

[0029] In some embodiments, before the step of attaching the two pieces of fabric together, the process includes:

[0030] Adjust the positions of the upper and lower edge-to-edge components on the fabric to be the same, and control the movements of the upper and lower edge-to-edge components to be synchronized.

[0031] The present application also provides an automatic edge-aligning mechanism, which is applicable to the above-mentioned automatic edge-aligning method, and the automatic edge-aligning mechanism includes an upper edge-aligning component, a lower edge-aligning component and a material spacing component located therebetween, and also includes an edge-aligning detection component and a deviation correction detection component; the upper edge-aligning component and the lower edge-aligning component both include a material pressing sub-component, a lifting sub-component and a material moving sub-component, the lifting sub-component drives the material pressing sub-component to lift and press the cloth, and the material moving sub-component drives the material pressing sub-component to move according to the edge-aligning condition of the cloth detected by the edge-aligning detection component so that the cloth can be moved and then aligned; the material pressing sub-component includes a roller and a roller motor, the roller motor is connected to the roller through a transmission component, and the roller motor drives the roller to rotate according to the deviation of the cloth detected by the deviation correction detection component to adjust the excess of the cloth at the roller.

[0032] In some embodiments, the material separation assembly includes a clamp baffle and a baffle cylinder, and the baffle cylinder drives the clamp baffle to move to separate the material separation assembly from the upper opposite side assembly and the lower opposite side assembly; the opposite side detection assembly includes an upper opposite side sensor and a lower opposite side sensor, and the upper opposite side sensor and the lower opposite side sensor are located on the needle side of the sewing machine; the deviation correction detection assembly includes an upper deviation correction sensor and a lower deviation correction sensor, and the upper deviation correction sensor and the lower deviation correction sensor are located on the upper and lower sides of the clamp baffle.

[0033] The present application also provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the processor executes the steps of the above method.

[0034] Compared with the above-mentioned background technology, the automatic edge alignment method provided by the present application mainly includes the following steps: S1, separate the two pieces of cloth, and detect and align the edges of the two pieces of cloth respectively; S2, if it is a flat sewing, repeat the previous step S1 until the seam is completed; if it is a three-dimensional sewing, repeat the previous step S1 until the sewing is paused at the segmentation point of the last section, and execute the next step S3; S3, stick the two pieces of cloth together, and detect and align the edges of the two pieces of cloth at the same time; S4, repeat the previous step S3 until the seam of the three-dimensional sewing is completed.

[0035] The automatic edge-aligning method requires the control of the automatic edge-aligning mechanism to realize the automatic edge-aligning of the fabric. The automatic edge-aligning mechanism can be used in conjunction with a sewing machine. Based on the automatic edge-aligning method, the automatic edge-aligning mechanism is controlled to align the fabric, and the sewing machine sews the fabric with aligned edges. In S1, the automatic edge-aligning mechanism is controlled to separate the two pieces of fabric first, and then it is controlled to detect the edges of the two pieces of fabric, and it is controlled to align the edges of the two pieces of fabric according to the detection results. In S2, the process of stitching is judged. If it is a flat sewing, repeat the previous step S1, control the automatic edge-aligning mechanism to align the fabric until the stitching is completed; if it is a three-dimensional sewing, repeat the previous step S1, control the automatic edge-aligning mechanism to align the fabric until the sewing is paused at the segmentation point of the last segment, and execute the next step S3. In S3, the automatic edge alignment mechanism is controlled so that the two pieces of fabric are no longer separated but are attached to each other, and the automatic edge alignment mechanism is controlled to detect the edges of the two pieces of fabric at the same time, and is controlled to align the edges of the two pieces of fabric according to the detection results. In S4, the previous step S3 is repeated to control the automatic edge alignment mechanism to align the edges of the fabric until the three-dimensional sewing seam is completed.

[0036] The automatic edge alignment method controls the alignment of two pieces of fabric by detecting the edges of the fabric, and meets various seam stitching processes, including flat sewing and three-dimensional sewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] Figure 1 A flowchart of an automatic edge alignment method provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of the automatic edge alignment mechanism provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the positions of the automatic edge alignment mechanism and the sewing machine provided in an embodiment of the present application;

[0041] Figure 4 A flowchart of the deviation correction of the upper cloth provided in the embodiment of the present application;

[0042] Figure 5 A flowchart of the deviation correction of the lower cloth provided in the embodiment of the present application;

[0043] Figure 6A flow chart of the edge alignment of the upper fabric provided in the embodiment of the present application;

[0044] Figure 7 A flow chart of the side alignment of the lower fabric provided in the embodiment of the present application;

[0045] Figure 8 A flow chart of the edge alignment of the upper and lower fabrics provided in the embodiment of the present application;

[0046] Fig. 9 A planar edge-to-edge flow chart provided for an embodiment of the present application;

[0047] Fig.10 A three-dimensional edge alignment flow chart provided in an embodiment of the present application.

[0048] in:

[0049] 1-upper roller, 2-lower roller, 3-upper photoelectric sensor, 4-lower photoelectric sensor, 5-clamp baffle, 6-baffle cylinder, 7-upper lifting cylinder, 8-lower lifting cylinder, 9-upper drive, 10-lower drive, 11-upper roller motor, 12-lower roller motor, 13-upper screw motor, 14-lower screw motor, 15-upper fiber optic sensor, 16-lower fiber optic sensor. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] The largest proportion of the current garment sewing processes is the stitching process of sewing two pieces of fabric (shoulder seams, side seams, sleeve sewing, etc.), which can be roughly divided into two categories: flat stitching and three-dimensional stitching. The former means that the two pieces of fabric to be stitched can be laid flat and fully unfolded, and the ends of the seams are disconnected (such as shoulder seams, side seams, etc.); while the latter refers to the process type in which the starting point and end point of the stitching coincide (such as hems, sleeve sewing, etc.). The core of these two types of processes is actually edge alignment and cutting. In simple processes, the edges are naturally aligned and the cutting is zero; in complex processes, the edges are quite different and have a large cutting. The existing automatic edge alignment technology can basically only align pieces with small edge differences, and has poor adaptability to different processes.

[0053] In order to solve the above technical problems, the present application provides an automatic edge alignment method, which deeply analyzes the sewing rules of different cut pieces, controls the alignment of two pieces of cloth by detecting the edges of the cloth, and can complete complex edge alignment in the sleeve sewing process while also being well adapted to other simple sewing processes.

[0054] Please refer to Figure 1 , Figure 1 A flowchart of the automatic edge alignment method provided in an embodiment of the present application.

[0055] like Figure 1 As shown, the automatic edge alignment method mainly includes the following steps: S1, separate the two pieces of cloth, detect and align the edges of the two pieces of cloth respectively; S2, if it is a flat sewing, repeat the previous step S1 until the seam is completed; if it is a three-dimensional sewing, repeat the previous step S1 until the sewing is paused when the segmentation point of the last segment is sewn, and execute the next step S3; S3, stick the two pieces of cloth together, and detect and align the edges of the two pieces of cloth at the same time; S4, repeat the previous step S3 until the seam of the three-dimensional sewing is completed.

[0056] The automatic edge-aligning method requires the control of the automatic edge-aligning mechanism to realize the automatic edge-aligning of the fabric. The automatic edge-aligning mechanism can be used in conjunction with a sewing machine. Based on the automatic edge-aligning method, the automatic edge-aligning mechanism is controlled to align the fabric, and the sewing machine sews the fabric with aligned edges. In S1, the automatic edge-aligning mechanism is controlled to separate the two pieces of fabric first, and then it is controlled to detect the edges of the two pieces of fabric at the edge positions, and it is controlled to align the edges of the two pieces of fabric at the edge positions according to the detection results. In S2, the process of stitching is judged. If it is a flat type of sewing, repeat the previous step S1, control the automatic edge-aligning mechanism to align the fabric until the stitching is completed; if it is a three-dimensional type of sewing, repeat the previous step S1, control the automatic edge-aligning mechanism to align the fabric until the sewing is paused at the segmentation point of the last segment, and execute the next step S3. In S3, the automatic edge alignment mechanism is controlled so that the two pieces of fabric are no longer separated but are attached to each other, and the automatic edge alignment mechanism is controlled to detect the edges of the two pieces of fabric at the edge alignment positions at the same time, and the edges of the two pieces of fabric at the edge alignment positions are controlled to be aligned according to the detection results. In S4, the previous step S3 is repeated to control the automatic edge alignment mechanism to align the fabrics until the three-dimensional sewing seam is completed.

[0057] The automatic edge alignment method controls the alignment of two pieces of fabric by detecting the edges of the fabric, and meets various seam stitching processes, including flat sewing and three-dimensional sewing.

[0058] Please refer to Figure 2 and Figure 3 , Figure 2 A schematic diagram of the structure of the automatic edge alignment mechanism provided in an embodiment of the present application, Figure 3 A schematic diagram of the positions of the automatic edge alignment mechanism and the sewing machine provided in an embodiment of the present application.

[0059] like Figure 2 and Figure 3 As shown, the present application also provides an automatic edge alignment mechanism, which is suitable for the above-mentioned automatic edge alignment method. The automatic edge alignment mechanism mainly includes an upper edge alignment component, a lower edge alignment component and a material spacing component located therebetween, and also includes an edge alignment detection component and a deviation correction detection component.

[0060] The upper edge-aligning assembly and the lower edge-aligning assembly both include a material pressing subassembly, a lifting subassembly and a material moving subassembly. The lifting subassembly drives the material pressing subassembly to lift and press the cloth, and the material moving subassembly drives the material pressing subassembly to move according to the edge-aligning condition of the cloth detected by the edge-aligning detection assembly so that the cloth can be moved and aligned.

[0061] The automatic edge alignment mechanism has wide applicability and can adapt to the difficult process of three-dimensional stitching such as cylindrical sleeve sewing, thereby improving the adaptability of the automatic edge alignment mechanism and being applicable to various flat and three-dimensional sewing or bonding processes. It can be used not only in sewing machines, but also in other types of clothing equipment such as viscose machines.

[0062] In a specific embodiment, when the automatic edge alignment method is used to control the automatic edge alignment mechanism, in S1, the spacer assembly is first controlled to separate the two pieces of cloth between the upper edge alignment assembly and the lower edge alignment assembly. At this time, the cloth on the upper side of the spacer assembly is the upper cloth, and the cloth on the lower side of the spacer assembly is the lower cloth. The upper edge alignment assembly presses the upper cloth on the upper side of the spacer assembly, and moves the upper cloth to the edge alignment position after pressing the upper cloth. The lower edge alignment assembly presses the lower cloth on the lower side of the spacer assembly, and moves the lower cloth to the edge alignment position after pressing the lower cloth. Then, the edge alignment detection assembly is controlled to detect the edges of the edge alignment positions of the two pieces of cloth, and the upper edge alignment assembly and the lower edge alignment assembly are controlled respectively according to the detection results, so that the upper cloth and the lower cloth are aligned after moving respectively. In S2, the stitching process is determined. If it is a flat sewing, the previous step S1 is repeated, the position of the spacer component is controlled not to change, the two pieces of fabric are always separated, and the upper and lower side-to-side components are controlled to move the upper and lower fabrics respectively and align them until the stitching is completed; if it is a three-dimensional sewing, the previous step S1 is repeated until the sewing is paused at the segmentation point of the last section, and the next step S3 is executed. In S3, the position of the spacer component is controlled to change, so that it is separated from the upper and lower side-to-side components, the two pieces of fabric are no longer separated, but the two pieces of fabric are attached, the upper and lower side-to-side components are controlled to press and move the two pieces of fabric together, the side-to-side detection component is controlled to detect the edges of the side-to-side positions of the two pieces of fabric, and the upper and lower side-to-side components are controlled to align the edges of the side-to-side positions of the two pieces of fabric according to the detection results. In S4, the previous step S3 is repeated to always keep the two pieces of fabric together, and the upper edge-matching assembly and the lower edge-matching assembly are controlled to achieve simultaneous movement of the upper fabric and the lower fabric to align the edges, until the three-dimensional sewing seam is completed.

[0063] It should be noted that the direction of controlling the movement of the opposite side of the fabric is different from the direction in which the fabric is fed into the sewing machine. Figure 3 For example, the automatic edge-aligning mechanism is located on one side of the sewing machine, and the automatic edge-aligning mechanism is arranged parallel to the sewing machine. The direction of sewing feeding of the sewing machine is the front-to-back direction as shown in the figure, and the direction of controlling the movement of the cloth to align, that is, the direction in which the material shifting subassembly drives the material pressing subassembly and the cloth to move is the left-to-right direction as shown in the figure. At this time, the cloth is fed in the front-to-back direction, and at the same time, the cloth is also aligned in the left-to-right direction.

[0064] Furthermore, for the automatic edge alignment mechanism, the edge alignment detection component includes an upper edge alignment sensor and a lower edge alignment sensor, and the upper edge alignment sensor and the lower edge alignment sensor are located on the needle side of the sewing machine. The upper edge alignment sensor is used to detect whether the upper fabric is located at the upper edge alignment position, and the lower edge alignment sensor is used to detect whether the lower fabric is located at the lower edge alignment position.

[0065] In a specific embodiment, in S1 of the method, the steps of detecting and aligning the edges of the two pieces of fabrics respectively include: detecting the upper edge alignment position by an upper edge alignment sensor; if there is an upper fabric at the upper edge alignment position, positively adjusting the upper fabric so that the edge of the upper fabric moves to the upper edge alignment position and then aligns; if there is no upper fabric at the upper edge alignment position, negatively adjusting the upper fabric so that the edge of the upper fabric moves to the upper edge alignment position and then aligns. In S1 of the method, the steps of detecting and aligning the edges of the two pieces of fabrics respectively also include: detecting the lower edge alignment position by a lower edge alignment sensor; if there is a lower fabric at the lower edge alignment position, positively adjusting the lower fabric so that the edge of the lower fabric moves to the lower edge alignment position and then aligns; if there is no lower fabric at the lower edge alignment position, negatively adjusting the lower fabric so that the edge of the lower fabric moves to the lower edge alignment position and then aligns. By repeatedly performing the above-mentioned edge detection, the edge of the upper fabric edge position is at the upper edge position, and the edge of the lower fabric edge position is at the lower edge position, so that the upper fabric and the lower fabric are automatically aligned.

[0066] In S3 of the method, the step of simultaneously detecting and aligning the edges of the two pieces of fabric includes: detecting the upper edge alignment position by an upper edge alignment sensor; if there are upper fabric and lower fabric at the upper edge alignment position, positively adjusting the edges of the upper fabric and lower fabric to move to the upper edge alignment position and then aligning; if there are no upper fabric and lower fabric at the upper edge alignment position, negatively adjusting the upper fabric and lower fabric to move the edges of the upper fabric and lower fabric to the upper edge alignment position and then aligning. By repeatedly performing the above-mentioned edge alignment detection, the edges of the upper fabric and lower fabric at the edge alignment position are at the upper edge alignment position, and the upper fabric and the lower fabric are automatically aligned.

[0067] It should be noted that the difference between S3 and S1 is that the position change of the spacer assembly is controlled to make the upper fabric and the lower fabric fit together. At this time, the upper edge assembly and the lower edge assembly move the edges of the fitted fabrics together. Because the upper fabric and the lower fabric are fitted together, there is no need to detect and align them separately, so only one of the upper edge sensor and the lower edge sensor needs to be selected. Because the upper edge sensor is preferably set closer to the sewing machine needle, the upper edge sensor is selected here instead of the lower edge sensor.

[0068] In a specific embodiment, before S3 of the method, before the step of attaching the two pieces of fabric together, the method includes: adjusting the action positions of the upper edge-to-edge assembly and the lower edge-to-edge assembly on the fabric to be the same, and controlling the upper edge-to-edge assembly and the lower edge-to-edge assembly to move synchronously.

[0069] Furthermore, for the automatic edge-aligning mechanism, the pressing subassembly includes a roller and a roller motor. The roller motor is connected to the roller through a transmission component. The roller motor drives the roller to rotate according to the deviation of the cloth detected by the correction detection component to adjust the excess of the cloth at the roller. The direction of cloth correction is the same as the direction of the cloth's edge alignment.

[0070] It should be noted that the roller in this embodiment presses the fabric tightly but not tightly. The degree of compression is sufficient to provide friction so that the roller can drive the fabric to move when rotating to adjust the margin and correct the deviation. At the same time, the degree of compression can also allow the fabric to be pulled away as sewing proceeds. Figure 3 For example, under the rotation of the roller, the fabric moves in the left and right directions shown in the figure to adjust the allowance, and the fabric needs to move in the front and back directions shown in the figure to achieve sewing feeding. At this time, the pressing degree of the roller allows the fabric to be pulled away from the bottom of the roller. Therefore, the roller is different from a fully clamped fixture. The roller fixture realizes the ability to control the fabric without interfering with the sewing feeding, and both rolling and translation can achieve the effect.

[0071] In some embodiments, when controlling the upper and lower side-to-side assemblies to move the upper and lower fabrics, the rollers are first controlled to press the fabrics, so that the fabrics can be driven to move under the action of the friction force of the rollers; the degree of pressing of the rollers on the fabrics can be controlled, thereby controlling the feeding force (the tension of the fabrics between the needle and the rollers). In addition to this feeding force control method, it can also be achieved through the differential feeding of the feeding mechanism of the sewing machine.

[0072] In a specific implementation, when the automatic edge alignment method is used to control the automatic edge alignment mechanism, in S1, after the step of separating the two pieces of cloth, the following steps are included: detecting and correcting the edges of the two pieces of cloth respectively.

[0073] In this embodiment, the deviation correction detection component is controlled to detect the edges of the non-opposite positions of the cloth, and the upper side alignment component and the lower side alignment component are controlled to correct the edges of the non-opposite positions of the two pieces of cloth according to the detection results, and then the excess of the cloth at the roller is adjusted so that the cloth can be fully and reasonably pressed by the roller.

[0074] It should be noted that the deviation correction detection component and the edge detection component do not detect the same position of the edge of the fabric. The edge detection component detects the edge of the fabric at the edge position, and the edge condition of the fabric is obtained through the detection of the edge detection component. The upper and lower edge detection components move the fabric to align the edges; the deviation correction detection component detects the edge of the fabric at the non-edge position, and the deviation of the fabric is obtained through the detection of the edge detection component. The roller motor moves the fabric to correct the deviation.

[0075] Furthermore, for the automatic edge alignment mechanism, the spacer assembly includes a clamp baffle 5 and a baffle cylinder 6, and the baffle cylinder 6 drives the clamp baffle 5 to move to separate the spacer assembly from the upper edge alignment assembly and the lower edge alignment assembly.

[0076] Furthermore, for the automatic edge alignment mechanism, the deflection correction detection component includes an upper deflection correction sensor and a lower deflection correction sensor, which are located on the upper and lower sides of the clamp baffle 5. The upper deflection correction sensor is used to detect whether the remaining amount of the upper fabric is in the upper offset position, and the lower deflection correction sensor is used to detect whether the remaining amount of the lower fabric is in the lower offset position.

[0077] Exemplarily, the upper correction sensor is installed on the upper opposite side assembly, and the lower correction sensor is installed on the lower opposite side assembly. The upper correction sensor detects whether the excess of the upper fabric is located at the upper offset position, and the lower correction sensor detects whether the excess of the lower fabric is located at the lower offset position.

[0078] In this embodiment, the upper deflection correction sensor detects the upper fabric, and the lower deflection correction sensor detects the lower fabric. The two are independent and do not interfere with each other. The detection method of the deflection correction sensor is to detect the fixed position (the fixed position is based on the opposite edge component as the reference object, the fixed position is fixed relative to the opposite edge component, and the fixed position moves with the movement of the opposite edge component), that is, to detect the presence of fabric at the offset position. Such a setting is easy to implement and has high detection reliability.

[0079] In a specific embodiment, in S1 of the method, the steps of detecting and correcting the edges of the two pieces of fabrics respectively include: detecting the upper offset position by an upper correction sensor; if there is an upper fabric at the upper offset position, positively adjusting the upper fabric so that the edge of the upper fabric moves to the upper offset position and then correcting the deviation; if there is no upper fabric at the upper offset position, negatively adjusting the upper fabric so that the edge of the upper fabric moves to the upper offset position and then correcting the deviation. In S1 of the method, the steps of detecting and correcting the edges of the two pieces of fabrics respectively also include: detecting the lower offset position by a lower correction sensor; if there is a lower fabric at the lower offset position, positively adjusting the lower fabric so that the edge of the lower fabric moves to the lower offset position and then correcting the deviation; if there is no lower fabric at the lower offset position, negatively adjusting the lower fabric so that the edge of the lower fabric moves to the lower offset position and then correcting the deviation. By repeatedly performing the above correction detection, the edge of the non-opposite side position of the upper fabric is at the upper offset position, and the edge of the non-opposite side position of the lower fabric is at the lower offset position, and the upper fabric and the lower fabric are automatically corrected.

[0080] Furthermore, for the automatic edge alignment mechanism, the material moving subassembly includes a screw motor, on which a slider is mounted; the lifting subassembly includes a lifting cylinder, a fixed end of the lifting cylinder is connected to the slider, and an actuating end of the lifting cylinder is connected to the material pressing subassembly.

[0081] like Figure 2 As shown, for the material moving subassembly of the upper edge-matching assembly, there are an upper screw motor 13 and an upper driver 9 matched with the upper screw motor 13; for the material moving subassembly of the lower edge-matching assembly, there are a lower screw motor 14 and a lower driver 10 matched with the lower screw motor 14. When in use, the upper and lower fabrics are moved (left and right directions in the figure) by the upper screw motor 13 and the lower screw motor 14 to perform edge matching of the fabrics during sewing.

[0082] like Figure 2 As shown, for the pressing subassembly of the upper opposite side assembly, there are an upper roller 1 and an upper roller motor 11; for the pressing subassembly of the lower opposite side assembly, there are a lower roller 2 and a lower roller motor 12. When in use, the upper roller motor 11 controls the rotation of the upper roller 1 and the lower roller motor 12 controls the rotation of the lower roller 2, and the roller 2 drives the cloth to move (left and right directions in the figure), and then adjusts the excess of the cloth at the roller so that the cloth can be fully and reasonably pressed by the roller. In some cases, the roller motor is used in combination with the screw motor, and the roller motor can solve the problem of excessive stop width or cloth detaching from the roller caused by the screw motor alone.

[0083] like Figure 2 and Figure 3As shown, exemplarily, the upper edge sensor and the lower edge sensor are upper optical fiber sensor 15 and lower optical fiber sensor 16, which are located on one side of the needle and detect the edges of the upper and lower fabrics at the opposite edge positions, respectively. The upper deviation correction sensor and the lower deviation correction sensor are upper photoelectric sensor 3 and lower photoelectric sensor 4, which are located on both sides of the spacer assembly and detect the edges of the upper and lower fabrics at the non-opposite edge positions, respectively.

[0084] Please continue to refer to Figure 3 Continuing with the example of the automatic edge-aligning mechanism 23 being arranged in parallel with the sewing machine, the cloth has at least three movement states during sewing. The first is the sewing feeding of the cloth in the front-to-back direction as shown in the figure, which is controlled by the feeding mechanism of the sewing machine; the second is the movement of the cloth in the left-right direction as shown in the figure, which is controlled by the upper screw motor 13 and the lower screw motor 14 of the automatic edge-aligning mechanism 23; the third is the adjustment of the cloth margin in the left-right direction as shown in the figure, which is controlled by the upper roller motor 11 and the lower roller motor 12 of the automatic edge-aligning mechanism 23.

[0085] In the second and third movements, the upper fiber optic sensor 15 and the lower fiber optic sensor 16, the upper photoelectric sensor 3 and the lower photoelectric sensor 4 detect the cloth respectively. Through two groups of four sensors, the roller can firmly control the cloth and flexibly align the edges. In particular, the setting of the upper photoelectric sensor 3 and the lower photoelectric sensor 4 reduces the difficulty of laying the cloth, so that when the cloth is placed on the roller, there is no need to align the edges and points, and the position adjustment is left to the mechanism itself, which also increases efficiency to a certain extent.

[0086] In a specific embodiment, the automatic edge alignment method is used to control an automatic edge alignment mechanism to automatically align the fabric. The automatic edge alignment mechanism is used in conjunction with a sewing machine. A mounting frame is provided on one side of the sewing machine, and the automatic edge alignment mechanism is installed on the mounting frame. The upper edge alignment component, the lower edge alignment component and the material separation component of the automatic edge alignment mechanism are respectively fixed to the mounting frame, the upper edge alignment component is located at the upper part, the lower edge alignment component is located at the lower part, and the material separation component is located in the middle part. The upper edge alignment component includes an upper roller 1, an upper lifting cylinder 7, an upper driver 9, an upper roller motor 11 and an upper screw motor 13, the lower edge alignment component includes a lower roller 2, a lower lifting cylinder 8, a lower driver 10, a lower roller motor 12 and a lower screw motor 14, the material separation component includes a clamp baffle 5 and a baffle cylinder 6, the edge alignment detection component includes an upper optical fiber sensor 15 and a lower optical fiber sensor 16, and the deviation correction detection component includes an upper photoelectric sensor 3 and a lower photoelectric sensor 4. The upper screw motor 13 and the upper driver 9 are fixed to the mounting frame through the first mounting plate, the lower side of the upper screw motor 13 is equipped with a slider, the fixed end of the upper lifting cylinder 7 is fixed to the slider, the action end of the upper lifting cylinder 7 is fixed to the second mounting plate, the upper roller motor 11 is fixed to the second mounting plate, the upper roller 1 is fixed to the second mounting plate through the rotating frame, the upper roller motor 11 drives the upper roller 1 with a synchronous belt, and the upper photoelectric sensor 3 is fixed to the rotating frame. The lower opposite side assembly is a mirror image of the upper opposite side assembly relative to the material separation assembly, the lower screw motor 14 and the lower driver 10 are fixed to the mounting frame through another first mounting plate, the upper side of the lower screw motor 14 is equipped with a slider, the fixed end of the lower lifting cylinder 8 is fixed to the slider, the action end of the lower lifting cylinder 8 is fixed to another second mounting plate, the lower roller motor 12 is fixed to the second mounting plate, the lower roller 2 is fixed to the second mounting plate through another rotating frame, the lower roller motor 12 drives the lower roller 2 with a synchronous belt, and the lower photoelectric sensor 4 is fixed to the rotating frame. The movement of the baffle cylinder 6 and the movement of the clamp baffle 5 are both limited by corresponding positioning mechanisms. When the baffle cylinder 6 is extended, the clamp baffle 5 is located between the upper roller 1 and the lower roller 2. The upper photoelectric sensor 3 detects the cloth on the upper side of the clamp baffle 5, and the lower photoelectric sensor 4 detects the cloth on the lower side of the clamp baffle 5. The upper optical fiber sensor 15 and the lower optical fiber sensor 16 are fixed to the mounting frame. The upper optical fiber sensor 15 and the lower optical fiber sensor 16 are located on one side of the needle of the sewing machine. The upper optical fiber sensor 15 detects the cloth on the upper layer, and the lower optical fiber sensor 16 detects the cloth on the lower layer.

[0087] In some embodiments, because the lower opposite side assembly and the upper opposite side assembly are mirror images relative to the spacer assembly, the upper roller 1 and the lower roller 2 both press the fabric on the clamp baffle 5. In order to alleviate the problem of excessive compression of the fabric by the upper roller 1 due to gravity in the upper opposite side assembly, a lifting spring is provided at the upper opposite side assembly, and the two ends of the spring are respectively connected to the fixed ends of the rotating frame and the upper lifting cylinder 7, so that the compression of the upper roller 1 is relieved by the lifting spring.

[0088] Among them, for the form of the roller, it can be a horizontally placed roller, or it can be tilted at a certain angle or changed from a cylindrical shape to a cone or even a sheet-like shape or other shapes. For the transmission parts of the roller and the roller motor, it can be a synchronous belt, or it can be changed to a gear or a motor direct drive, etc. For the form of the material separation assembly, the clamp baffle 5 can be split into an upper and lower piece, which can be synchronously translated with the upper and lower rollers respectively, or it can be changed to two rollers that cooperate with the upper and lower rollers respectively. The extension and retraction drive of the clamp baffle 5 can be replaced by a guide rail synchronous belt or a crank connecting rod instead of a cylinder. For the form of the material moving sub-assembly, it can be replaced by a guide rail synchronous belt or a crank connecting rod instead of a screw rod. For the form of the lifting sub-assembly, it can be implemented instead of a cylinder and can be replaced by a guide rail synchronous belt or a screw rod. The sensor can be replaced by a laser, a visual sensor, etc. instead of a photoelectric and optical fiber sensor.

[0089] Please refer to Figure 4 , Figure 4 Process M1 is the upper fabric deviation correction process. During the sewing process, the upper photoelectric sensor 3 detects the upper fabric on the upper side of the clamp baffle 5. If the upper fabric is detected, the upper roller motor 11 is controlled to adjust the upper fabric in a positive direction. If the upper fabric is not detected, the upper roller motor 11 is controlled to adjust the upper fabric in a negative direction. This deviation correction detection process is repeated during sewing to ensure that the upper fabric is reliably controlled by the upper roller motor 11.

[0090] Please refer to Figure 5 , Figure 5 Process M2 is the lower fabric deviation correction process. During the sewing process, the lower photoelectric sensor 4 detects the lower fabric on the lower side of the clamp baffle 5. If the lower fabric is detected, the lower roller motor 12 is controlled to adjust the lower fabric in a positive direction. If the lower fabric is not detected, the lower roller motor 12 is controlled to adjust the lower fabric in a negative direction. This deviation correction detection process is repeated during sewing to ensure that the lower fabric is reliably controlled by the lower roller motor 12.

[0091] Please refer to Figure 6 , Figure 6 Process M3 is the upper fabric alignment process. During the sewing process, the upper optical fiber sensor 15 detects the upper fabric on the needle side. If the upper fabric is detected, the upper screw motor 13 is controlled to move the upper fabric in the positive direction. If the upper fabric is not detected, the upper screw motor 13 is controlled to move the upper fabric in the negative direction. This alignment detection process is repeated during sewing to ensure that the upper fabric is accurately aligned on the needle side.

[0092] Please refer to Figure 7 , Figure 7Process M4 is the lower fabric edge alignment process. During the sewing process, the lower optical fiber sensor 16 detects the lower fabric on the side of the needle. If the lower fabric is detected, the lower screw motor 14 is controlled to move the lower fabric in the positive direction. If the lower fabric is not detected, the lower screw motor 14 is controlled to move the lower fabric in the negative direction. This edge alignment detection process is repeated during sewing to ensure that the lower fabric is accurately aligned on the side of the needle.

[0093] Please refer to Figure 8 , Figure 8 Process M5 is the process of aligning the upper and lower fabrics that are fitted. During the sewing process, only the upper optical fiber sensor 15 is used for detection. At this time, the upper and lower fabrics that are fitted are detected. If two pieces of fabric are detected, the upper screw motor 13 and the lower screw motor 14 are synchronously controlled to move the two pieces of fabric in the positive direction. If two pieces of fabric are not detected, the upper screw motor 13 and the lower screw motor 14 are synchronously controlled to move the two pieces of fabric in the negative direction. This alignment detection process is repeated during sewing to ensure that the two pieces of fabric are accurately aligned on one side of the needle.

[0094] In a specific embodiment, the process of sewing and edging is described as follows.

[0095] Before sewing, the user sets the parameters related to the sewing pattern, fixes the starting point of the fabric on the machine, fixes the upper fabric between the upper roller 1 and the clamp baffle 5, and fixes the lower fabric between the lower roller 2 and the clamp baffle 5. Start the program to start sewing (the electronic control first reads the parameter information contained in the sewing pattern). At this time, there are two situations, namely, plane type and three-dimensional type, which are set by the user in advance.

[0096] Please refer to Fig. 9 , Fig. 9 A planar edge alignment flow chart provided for an embodiment of the present application.

[0097] For flat sewing, the sewing machine is started, and the feeding mechanism of the sewing machine begins to sew the fabric together with the sewing mechanism at the speed set by the program; at this time, the four sensors of the automatic edge alignment mechanism and the corresponding motors also start working synchronously to control the alignment of the edges of the two pieces of fabric; the electronic control adjusts the feed direction and differential in time according to the segmentation conditions set in the pre-programmed situation until the seam is completed. During this process, the automatic edge alignment control remains unchanged, and the processes M1, M2, M3 and M4 are repeatedly executed before the sewing is completed.

[0098] Please refer to Fig.10 , Fig.10 A three-dimensional edge alignment flow chart provided in an embodiment of the present application.

[0099] For three-dimensional sewing, the sewing machine is started, and the feeding mechanism of the sewing machine starts to sew the fabric together with the sewing mechanism at the speed set by the program; at this time, the four sensors of the automatic edge alignment mechanism and the corresponding motors also start to work synchronously to control the alignment of the edges of the two pieces of fabric; before sewing to the segmentation point of the last section, the process M1, M2, M3 and M4 are repeatedly executed, and the process of three-dimensional sewing is consistent with that of flat sewing; the electronic control controls the sewing to pause when the program progress reaches the segmentation point of the last section, and the lower screw motor 14 controls the lower driver 10 The position of the screw is consistent with the position of the upper screw motor 13 and the upper driver 9 (screw), so that the upper roller 1 and the lower roller 2 are aligned, and then the baffle cylinder 6 retracts the clamp baffle 5, and the clamp baffle 5 between the rollers is pulled out, resulting in a gap between the upper roller 1 and the lower roller 2. At this time, the upper lifting cylinder 7 and the lower lifting cylinder 8 will push the upper roller 1 and the lower roller 2 to clamp the middle fabric again due to the unused stroke. The last section of sewing is controlled by the upper optical fiber sensor 15 to control the upper screw motor 13 and the lower screw motor 14 to complete the final edge alignment work according to process M5.

[0100] The automatic edge alignment method can not only realize the above-mentioned edge alignment control through four sensors and corresponding motors, but also control the feeding force through two lifting cylinders. For the control of feeding force, the upper roller 1 is driven by the upper lifting cylinder 7 to press the upper fabric, and the lower roller 2 is driven by the lower lifting cylinder 8 to press the lower fabric, and by changing the pressing force applied by the upper lifting cylinder 7 and the lower lifting cylinder 8 to the corresponding rollers, the pressing degree of the rollers can be changed, thereby controlling the feeding force.

[0101] The present application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes the steps of the above method.

[0102] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0103] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0104] The automatic edge alignment method, automatic edge alignment mechanism, and readable storage medium provided by the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An automatic edge alignment method, characterized in that: include: Separate the two pieces of fabric and detect and align the edges of the two pieces of fabric respectively; If it is a flat sewing, repeat the previous step until the seam is completed; If it is three-dimensional sewing, repeat the previous step until the segmentation point of the last segment is sewn, then stop sewing and proceed to the next step; Put two pieces of fabric together, and detect and align their edges at the same time; Repeat the previous step until the three-dimensional sewing is completed.

2. The automatic edge alignment method according to claim 1, characterized in that: The steps of respectively detecting and aligning the edges of the two pieces of cloth include: The upper edge position is detected by an upper edge sensor; If there is upper fabric at the upper edge-matching position, the upper fabric is adjusted in a positive direction so that the edge of the upper fabric moves to the upper edge-matching position and then faces the rear edge; if there is no upper fabric at the upper edge-matching position, the upper fabric is adjusted in a negative direction so that the edge of the upper fabric moves to the upper edge-matching position and then faces the rear edge; The position of the lower opposite side is detected by a lower opposite side sensor; If there is lower fabric at the lower opposite edge position, the lower fabric is adjusted in a positive direction so that the edge of the lower fabric moves to the lower opposite edge position to the rear opposite edge; if there is no lower fabric at the lower opposite edge position, the lower fabric is adjusted in a negative direction so that the edge of the lower fabric moves to the lower opposite edge position to the rear opposite edge.

3. The automatic edge alignment method according to claim 2, characterized in that: The step of simultaneously detecting and aligning the edges of two pieces of cloth comprises: The upper edge position is detected by an upper edge sensor; If there are upper fabrics and lower fabrics at the upper edge-to-edge position, the edges of the upper fabrics and lower fabrics are positively adjusted to move to the upper edge-to-edge position for rear edge-to-edge; if there are no upper fabrics and lower fabrics at the upper edge-to-edge position, the upper fabrics and lower fabrics are negatively adjusted to move to the upper edge-to-edge position for rear edge-to-edge.

4. The automatic edge alignment method according to claim 1, characterized in that: The step of separating the two pieces of fabric comprises: The two pieces of fabric are separated by a spacer assembly, the upper fabric is pressed and moved by an upper side-to-side assembly on the upper side of the spacer assembly, and the lower fabric is pressed and moved by a lower side-to-side assembly on the lower side of the spacer assembly; The step of laminating the two pieces of fabric comprises: The spacer assembly is controlled to separate from the upper and lower side assemblies, and the upper and lower side assemblies are controlled to press and move the fitted upper and lower fabrics.

5. The automatic edge alignment method according to claim 4, characterized in that: After the step of separating the two pieces of fabric, the method further comprises: The edges of the two pieces of fabric are detected and corrected respectively.

6. The automatic edge alignment method according to claim 5, characterized in that: The steps of respectively detecting and correcting the edges of the two pieces of cloth include: The upper deviation position is detected by the upper deviation correction sensor; If there is upper fabric at the upper offset position, the upper fabric is adjusted in a positive direction so that the edge of the upper fabric moves to the upper offset position and then corrects the deviation; if there is no upper fabric at the upper offset position, the upper fabric is adjusted in a negative direction so that the edge of the upper fabric moves to the upper offset position and then corrects the deviation; The lower deviation position is detected by the lower deviation correction sensor; If there is lower fabric at the lower offset position, the lower fabric is adjusted in a positive direction so that the edge of the lower fabric moves to the lower offset position and then corrects the deviation; if there is no lower fabric at the lower offset position, the lower fabric is adjusted in a negative direction so that the edge of the lower fabric moves to the lower offset position and then corrects the deviation.

7. The automatic edge alignment method according to claim 4, characterized in that: Before the step of laminating the two pieces of fabric, the method comprises: Adjust the positions of the upper and lower edge-to-edge components on the fabric to be the same, and control the movements of the upper and lower edge-to-edge components to be synchronized.

8. An automatic edge alignment mechanism, characterized in that: The automatic edge alignment method is applicable to any one of claims 1 to 7, wherein the automatic edge alignment mechanism comprises an upper edge alignment component, a lower edge alignment component and a material spacing component located therebetween, and also comprises an edge alignment detection component and a deviation correction detection component; the upper edge alignment component and the lower edge alignment component both comprise a material pressing sub-component, a lifting sub-component and a material moving sub-component, the lifting sub-component drives the material pressing sub-component to lift and press the fabric, the material moving sub-component drives the material pressing sub-component to move the fabric according to the edge alignment condition of the fabric detected by the edge alignment detection component so that the fabric is moved and then aligned; the material pressing sub-component comprises a roller and a roller motor, the roller motor is connected to the roller via a transmission component, and the roller motor drives the roller to rotate according to the deviation condition of the fabric detected by the deviation correction detection component to adjust the excess of the fabric at the roller.

9. The automatic edge alignment mechanism according to claim 8, characterized in that: The material separation assembly includes a clamp baffle and a baffle cylinder, and the baffle cylinder drives the clamp baffle to move to separate the material separation assembly from the upper opposite side assembly and the lower opposite side assembly; the opposite side detection assembly includes an upper opposite side sensor and a lower opposite side sensor, and the upper opposite side sensor and the lower opposite side sensor are located on the needle side of the sewing machine; the deviation correction detection assembly includes an upper deviation correction sensor and a lower deviation correction sensor, and the upper deviation correction sensor and the lower deviation correction sensor are located on the upper and lower sides of the clamp baffle.

10. A computer-readable storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

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