A sewing pattern generation method, generation system and processing method of a bra back buckle

Abstract

The application discloses a bra back buckle sewing pattern generation method, which is used for forming a sewing pattern of a back buckle during back buckle machining, and the sewing pattern is composed of a pattern line segment one and a pattern line segment two, and comprises the following steps: step A, establishing a coordinate system with X-axis and Y-axis directions; step B, defining the pattern line segment one, which is formed by connecting line segments distributed in the positive and negative half-axis directions of the X-axis and line segments distributed in the Y-axis direction; step C, defining the pattern line segment two, which is formed by line segments distributed on the two sides of the pattern line segment one in the X-axis direction and intersecting the pattern line segment one in the Y-axis direction at multiple positions; and step E, calculating needle steps, wherein the generation method can generate corresponding back edge sewing pattern graphics according to the size of the bra back buckle, and can convert the graphics to form needle step data during bra back buckle machining.

Description

Technical Field

[0001] This invention relates to the field of sewing processing technology for bra back clasp production, specifically to a method, system, and processing method for generating sewing patterns for bra back clasps. Background Technology

[0002] When using a back-fastening machine to produce bra back clasps, the back-fastening fabric needs to be sewn together with sewing thread. Before processing, the sewing thread used for sewing needs to be edited with the corresponding sewing pattern in the back-fastening machine's operating system. After the back-fastening machine's operating system generates the sewing pattern graphic, it combines the input parameters to generate the stitch data for sewing the thread. The back-fastening machine controls the relevant mechanisms to work according to the stitch data.

[0003] With the continuous innovation of bra back clasp technology, the types of bra back clasps are also increasing. One type features a reverse binding design. This bra back clasp uses soft material to form a binding along the edge of the bra back clasp, preventing the edge from being too stiff and affecting the user's wearing comfort. During the processing of this bra back clasp using a back clasp machine, the reverse binding design requires two stitching processes. That is, the sewing pattern is composed of two pattern lines. Existing bra back clasp machines do not have a sewing pattern generation system compatible with the production of bra back clasps with reverse binding designs. The production of bra back clasps with reverse binding designs typically involves sewing two sets of sewing patterns sequentially. The sewing pattern graphics also need to be edited in two separate interfaces. When operating the back clasp machine, the operator needs to switch interfaces to observe one of the two sewing parameters, making the operation cumbersome.

[0004] Furthermore, existing bra back clasp machines, when editing sewing patterns, typically only have one set of editable instructions to adjust the parameters of the pattern lines on both sides of the pattern if the pattern has components on both sides. The parameters of the pattern lines on both sides of the pattern can only be adjusted simultaneously, and it is not possible to adjust the parameters of the pattern lines on one side of the pattern individually. When processing bra back clasps with different requirements for the tightness of the seam stitching on both sides, the bra back clasp machine cannot adapt to this processing requirement, and the processing versatility of the bra back clasp machine is deficient. Summary of the Invention

[0005] To address the shortcomings of the aforementioned technologies, this invention provides a method, system, and processing method for generating reverse binding sewing pattern graphics corresponding to the size of a bra back clasp, and for converting these graphics to form stitch data for bra back clasp machining.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] This invention discloses a method for generating a sewing pattern for a bra back clasp. This method is used to form a sewing pattern for the bra back clasp during back clasp machining. The sewing pattern consists of pattern line segment one and pattern line segment two, and includes the following steps:

[0008] Step A: Establish a coordinate system. Establish a coordinate system with two directions, X and Y, to obtain the coordinate data of pattern segment one and pattern segment two in the sewing pattern.

[0009] Step B: Define pattern line segment one. The pattern line segment one is formed by connecting line segments distributed in the positive and negative half-axis directions of the X-axis and line segments distributed in the Y-axis direction. The midpoint of the pattern line segment one in the X-axis direction is located at the coordinate center of the coordinate system. Set the projection length of the middle segment of the pattern line segment one on the X-axis as L1, set the projection length of the middle segment of the pattern line segment one on the Y-axis as W1, set the projection length of the two sides of the pattern line segment one on the Y-axis as L2, and set the projection length of the two sides of the pattern line segment one on the X-axis as W2.

[0010] Step C, define pattern line segment two, which is a line segment distributed on both sides of pattern line segment one in the X-axis direction and intersecting pattern line segment one in the Y-axis direction at multiple points. Set the projection length of pattern line segment two on the Y-axis to L3, set the projection length of pattern line segment two on the X-axis to W3, and set the included angle between pattern line segment two and pattern line segment one to ∠1.

[0011] Step D, line segment combination: Based on the length and width of pattern line segment one and pattern line segment two in the X and Y axes of the coordinate system as described in steps B and C, and obtain the connection point between pattern line segment two and pattern line segment one, until the connection between pattern line segment one and pattern line segment two is completed, the generated graphic is the sewing pattern. The length interval values ​​of the dividing points on the sewing pattern line segments corresponding to W1, W2 and W3 are S1, S2 and S3 respectively.

[0012] Step E, stitch calculation: After the sewing pattern is generated, if at least one of W1, W2 and W3 is not 0, the sewing pattern is divided into average stitch lengths, and the average division points are used as stitch data for sewing processing.

[0013] Furthermore, in step B, the first pattern line segment includes a reinforcing line segment distributed along the Y-axis direction. The projected length of the reinforcing line segment on the Y-axis is L4, and the reinforcing line segment intersects with the portion of the first pattern line segment along the Y-axis direction.

[0014] Furthermore, the starting point of the reinforcing line segment is located within the region formed by the negative half-axis of the X-axis and the negative half-axis of the Y-axis. The distance from the projection of the starting point of the reinforcing line segment in the X-axis direction to the coordinate center is L1 / 2. After the starting point of the reinforcing line segment transitions through an oblique line, it forms a straight line parallel to the Y-axis.

[0015] Furthermore, the distance from the projection of the endpoint of the diagonal line on the X-axis to the coordinate center is greater than the distance from the projection of the starting point of the diagonal line on the X-axis to the coordinate center, and the distance from the projection of the endpoint of the diagonal line on the Y-axis to the coordinate center is greater than the distance from the projection of the starting point of the diagonal line on the Y-axis to the coordinate center.

[0016] Furthermore, the distance from the projection of the intersection point of the first and second patterned line segments on the X-axis to the coordinate center is L1, the distance from the projection of the intersection point of the first and second patterned line segments on the Y-axis to the coordinate center is L2, and the endpoint of the first patterned line segment within the region formed by the negative half-axis of the X-axis and the positive half-axis of the Y-axis is the starting point of the second patterned line segment.

[0017] Furthermore, the projected length of the second pattern line segment on the Y-axis is longer than the projected length of the first pattern line segment on the Y-axis. The difference between the projected lengths of the second and first pattern line segments on the Y-axis is the tail segment. The projected length of the tail segment on the Y-axis is L5, and the projected length of the tail segment on the X-axis is W3. If the value of W3 is not 0, the tail segment is divided into evenly spaced stitches, and the length interval of the dividing points on the tail segment is S4.

[0018] The present invention also discloses a sewing pattern generation system for bra back clasps, including a signal input device, a processor for generating stitch data, and a data output interface for data transmission. The signal input device is equipped with an operation screen with an editing module. The editing module is equipped with an interface control unit for editing sewing pattern parameters, an interface option instruction group, and an input instruction group. The interface control unit edits the sewing pattern parameters by executing the instructions in the interface option instruction group and the input instruction group and displays them on the operation screen.

[0019] The interface option instruction group consists of several first sub-instructions. The first sub-instruction to be executed is determined by selecting function options in the function interface of the operation screen, and the execution of the first sub-instruction is achieved by the interface control unit to jump from the current function interface to the next level or the next level of function interface with function options.

[0020] The input instruction group includes several second sub-instructions for adjusting graphic parameters when defining pattern segment one and pattern segment two. The operation screen jumps to the parameter editing interface for editing the parameters of the overall sewing pattern, the parameters of pattern segment one, or the parameters of pattern segment two. The parameter editing interface has several editable options. After selecting the editable options in the parameter editing interface, editing can be performed, and after editing is completed, the second sub-instruction executed by the interface control unit is determined.

[0021] Furthermore, the functional interface and parameter editing interface include:

[0022] The pattern type interface is a function interface with several sewing pattern options, including the option to sew a back button reverse binding edge.

[0023] The global interface is a parameter editing interface with several editable options for adjusting the overall parameters of the sewing pattern;

[0024] Line segment editing interface one is a parameter editing interface with several editable options for adjusting the parameters of the pattern line segment one;

[0025] The second line segment editing interface is a parameter editing interface with several editable options for adjusting the parameters of the pattern line segment.

[0026] The editable parameters of the line segment editing interface one include the option to adjust the parameters of the middle section and the left and right sides of the pattern line segment one. The editable parameters of the line segment editing interface two include the option to adjust the parameters of the pattern line segment two located on the left and right sides of the pattern line segment one. The global interface, the line segment editing interface one, and the line segment editing interface two all have a function option two for switching the interface to the previous interface, a function option three for switching the interface to the next interface, and a function option four for confirming the editable options.

[0027] Furthermore, the editable options within the parameter editing interface include:

[0028] Editable option one is used to edit the coordinates of the center point of the coordinate system;

[0029] Editable option two allows you to edit the values ​​of L1, L2, L3, L4, and L5;

[0030] The third editable option allows you to edit the values ​​of W1, W2, and W3.

[0031] Editable option four is used to edit the stitch density values ​​of S1, S2, S3 and S4;

[0032] The fifth editable option is used to edit the angle value of ∠1.

[0033] This invention also discloses a method for processing sewing patterns on bra back clasps. This method is used in back clasp machining with an automatic feeding device and a pressing device, and includes the following steps:

[0034] Step 1: In the pattern type interface of the operation screen, select the sewing pattern option 1 for sewing back button reverse binding. After clicking, it will turn orange. Then click the fourth function option. The operation screen will switch to the global interface.

[0035] Step 2: After setting the coordinate center point in the editable options in the global interface, click function option 4;

[0036] Step 3: After setting the parameters for the reinforced line segment in the editable options in the global interface, click function option 4;

[0037] Step 4: Measure the thickness of the back buckle, set the corresponding parameters of the editable options in the global interface, line segment editing interface 1, and line segment editing interface 2 according to the back buckle size specifications, and set and save the preset pattern number.

[0038] Step 5: After the user edits the sewing pattern through the signal input device, it is input into the processor. The processor generates the stitch data for step AE and outputs the stitch data to the back button machine through the data output interface. The back button machine then operates according to the stitch data.

[0039] The beneficial effects of this invention are as follows:

[0040] The sewing pattern generation method disclosed in this invention can, based on the size of the bra back clasp, set a graphic composed of pattern line segments during the production process of the back clasp machine, generating a reverse binding sewing pattern when the back clasp machine is sewing the bra back clasp. The back binding sewing pattern graphic is used to set the stitch parameters of the back clasp machine during processing and is converted into stitch data used by the back clasp machine. This allows for the processing of reverse binding edges corresponding to the size of bra back clasps of different specifications. Furthermore, the sewing pattern generation system on the back clasp machine can directly and clearly display the setting options for each part of the sewing pattern graphic during generation to the back clasp operator, making the operation of the back clasp machine for bra back clasp sewing smoother. Through the cooperation of the generation system with other processing mechanisms on the back clasp machine, the quality of the reverse binding edge formation of the bra back clasp can be guaranteed, improving the yield rate of bra back clasps with reverse binding edges. Attached Figure Description

[0041] Figure 1 This is a flowchart illustrating the method for generating sewing patterns.

[0042] Figure 2A graphic illustration of the sewing pattern generated by this sewing pattern generation method.

[0043] Figure 3 This is a schematic diagram of the pattern line segment one.

[0044] Figure 4 This is a schematic diagram of the second pattern line segment.

[0045] Figure 5 This is a schematic diagram of the sewing pattern generation system.

[0046] Figure 6 This is a schematic diagram illustrating the working principle of the editing module.

[0047] Figure 7 This is a structural diagram of the functional interface.

[0048] Figure 8 This is a schematic diagram of the global interface for the parameter editing interface.

[0049] Figure 9 This is a flowchart illustrating the process of sewing pattern processing.

[0050] Figure 10 This is a schematic diagram showing the transfer of back-fastening fabric to the head of the back-fastening machine.

[0051] Figure 11 This is a structural diagram of the bra back clasp after the first sewing process.

[0052] Figure 12 This is a schematic diagram of the structure of a bra back clasp after the second sewing process.

[0053] In the picture, 1. Back button fabric; 2. Automatic feeding device; 3. Pressing device; 4. Operation screen; 5. Machine head; 6. Sewing needle. Detailed Implementation

[0054] This invention discloses a method for generating sewing patterns for bra back clasps, such as... Figures 1-4 As shown, this generation method is used to form the sewing pattern for the bra back clasp during back clasp machine processing. The sewing pattern consists of pattern line segment one and pattern line segment two, and includes the following steps:

[0055] Step A: Establish a coordinate system. Establish a coordinate system with two directions, X and Y, to obtain the coordinate data of pattern segment one and pattern segment two in the sewing pattern.

[0056] Step B: Define pattern line segment one. The pattern line segment one is formed by connecting line segments distributed in the positive and negative half-axis directions of the X-axis and line segments distributed in the Y-axis direction. The midpoint of the pattern line segment one in the X-axis direction is located at the coordinate center of the coordinate system. Set the projection length of the middle segment of the pattern line segment one on the X-axis as L1, set the projection length of the middle segment of the pattern line segment one on the Y-axis as W1, set the projection length of the two sides of the pattern line segment one on the Y-axis as L2, and set the projection length of the two sides of the pattern line segment one on the X-axis as W2.

[0057] Step C, define pattern line segment two, which is a line segment distributed on both sides of pattern line segment one in the X-axis direction and intersecting pattern line segment one in the Y-axis direction at multiple points. Set the projection length of pattern line segment two on the Y-axis to L3, set the projection length of pattern line segment two on the X-axis to W3, and set the included angle between pattern line segment two and pattern line segment one to ∠1.

[0058] Step D, line segment combination: Based on the length and width of pattern line segment one and pattern line segment two in the X and Y axes of the coordinate system as described in steps B and C, and obtain the connection point between pattern line segment two and pattern line segment one, until the connection between pattern line segment one and pattern line segment two is completed, the resulting graphic is the sewing pattern.

[0059] Step E, stitch calculation: After the sewing pattern is generated, if at least one of the three values ​​W1, W2 and W3 is not 0, the sewing pattern is divided into average stitch lengths, and the average division points are used as stitch data for sewing processing. The length interval values ​​of the division points on the sewing pattern line segments corresponding to W1, W2 and W3 are S1, S2 and S3, respectively.

[0060] It should be noted that: The first decorative line segment is the initial stitching made by the back-fastening machine during the reverse binding process of the bra back clasp. This is to secure the softer back-fastening fabric to the back of the stiffer fabric, creating an initial connection between the two materials and allowing the softer fabric to envelop the stiffer one. The second decorative line segment is the subsequent stitching made during the reverse binding process. This occurs after the softer back-fastening fabric is folded back over the edge of the stiffer fabric to form the reverse binding, securing the two materials together for a more stable connection and helping the bra back clasp edge maintain its shape.

[0061] In step B, L1 is a parameter affecting the projected length of the middle section of the pattern line segment on the X-axis. Specifically, the value of L1 determines the projected length of the sewing thread on the X-axis of the middle section of the back button fabric during the first sewing operation. W1 is a parameter affecting the projected length of the middle section of the pattern line segment on the Y-axis. Specifically, the projected length of the sewing thread on the Y-axis of the middle section of the back button fabric during the first sewing operation. W2 is a parameter affecting the total projected length of the two side segments of the pattern line segment on the X-axis. The sum of the projected lengths on both sides of the bra back clasp along the X-axis; the value of L2 determines the length of the projected lengths on the Y-axis of both sides of the pattern line segment one, that is, the length of the portion of the sewing thread on both sides of the back clasp fabric when the back clasp machine performs its first sewing; since the actual processing of the bra back clasp may require different sewing line segments on both sides, the sewing lines formed on both sides of the bra back clasp will be different. Therefore, when defining pattern line segment one, the values ​​of W2 and L2 set on both sides of pattern line segment one can be two different values ​​or two identical values.

[0062] In step C, L3 is a parameter affecting the projected length of pattern line segment two on the Y-axis. Specifically, the value of L3 determines the length of the stitching lines projected onto the Y-axis on both sides of the back clasp fabric during the second sewing. W3 is a parameter affecting the projected length of pattern line segment two on the X-axis. Specifically, it determines the length of the stitching lines projected onto the sides of the bra back clasp during the second sewing. ∠1 is a parameter affecting whether pattern line segment two is in an upright or inclined state on both sides of pattern line segment one. Specifically, during the second sewing, the stitching lines on both sides of the back clasp fabric are either perpendicular to the X-axis or inclined to the X-axis. Since the actual stitching requirements for both sides of the bra back clasp may differ, the stitching lines formed on both sides of the bra back clasp will be different. Therefore, when defining pattern line segment two, the values ​​of L3, W3, and ∠1 on both sides of pattern line segment two can be two different values ​​or two identical values.

[0063] In step E, when the value of W1 is not 0, the middle section of the pattern line segment one is divided into equal stitch lengths, and the projection length of the straight line formed by the dividing points of the equal division on the X-axis is equal to L1; when the value of W2 is not 0, the parts on both sides of the pattern line segment one are divided into equal stitch lengths, and the projection length of the straight line formed by the dividing points of the equal division on the Y-axis is equal to L2; when the value of W2 is not 0, the pattern line segment two is divided into equal stitch lengths, and the projection length of the straight line formed by the dividing points of the equal division on the Y-axis is equal to L3.

[0064] The above-mentioned sewing pattern generation method can set a graphic composed of pattern lines during the production process of the back clasp machine, based on the size of the bra back clasp. This generates a reverse binding sewing pattern when the back clasp machine is sewing the bra back clasp. The graphic of the reverse binding sewing pattern of the bra back clasp is used to set the stitch parameters of the back clasp machine during the processing process, and converts it into stitch data used by the back clasp machine during processing. This allows for the processing of reverse binding edges corresponding to the size of bra back clasps of different specifications.

[0065] As a further preferred embodiment of the above, such as Figure 2 and Figure 3 As shown, in step B, the first pattern line segment includes a reinforcing line segment distributed along the Y-axis. The projected length of the reinforcing line segment on the Y-axis is L4, and the reinforcing line segment intersects with the portion of the first pattern line segment along the Y-axis.

[0066] In the production of bra back clasps, there may be dimensional errors between the garment fabric and the clasp fabric. Excess fabric needs to be folded up to ensure the edges of the garment fabric and the clasp fabric overlap as much as possible before sewing. However, when the folded fabric is sewn by the sewing machine head, it doesn't maintain its folded state under external force. When the sewing needle moves along the Y-axis between the garment fabric and the clasp fabric, it is pushed by the presser foot at the needle point, causing the folded fabric to be pushed outside the sewing line. This results in the garment fabric not overlapping with the clasp fabric, leading to defective products. Therefore, before the sewing needle begins sewing along the Y-axis, a reinforcing line segment is sewn in the opposite direction of the original sewing needle's Y-axis sewing path. After the reinforcing line segment fixes one end of the garment fabric and the back button fabric in the Y-axis direction, the sewing thread is then sewn from the other end of the garment fabric and the back button fabric in the Y-axis direction. This prevents excess garment fabric from being pushed out of the sewing position during the sewing process between the garment fabric and the back button fabric. L4 is a parameter that affects the projected length of the reinforcing line segment on the Y-axis. That is, the value of L4 determines the length of the reinforcing line segment sewn in the Y-axis direction when the back button machine performs the first sewing.

[0067] Preferred, such as Figure 2 and Figure 3 As shown, the starting point of the reinforcing line segment is located within the area formed by the negative half-axis of the X-axis and the negative half-axis of the Y-axis. The distance from the projection of the starting point of the reinforcing line segment in the X-axis direction to the coordinate center is L1 / 2. After the starting point of the reinforcing line segment transitions through an oblique line, it forms a straight line parallel to the Y-axis.

[0068] Specifically, the diagonal line allows the initial segment of the reinforcing line to form a line segment that simultaneously presses the garment fabric and back clasp fabric in the X and Y axes using the sewing thread, thereby improving the pressing effect of the sewing thread at the corner of the bra back clasp on the garment fabric and back clasp fabric. After the transition of the diagonal line, the reinforcing line segment is then set along the direction parallel to the Y axis to fix one end of both the garment fabric and the back clasp fabric in the Y axis direction.

[0069] Preferred, such as Figure 2 and Figure 3 As shown, the distance from the projection of the endpoint of the diagonal line on the X-axis to the coordinate center is greater than the distance from the projection of the starting point of the diagonal line on the X-axis to the coordinate center, and the distance from the projection of the endpoint of the diagonal line on the Y-axis to the coordinate center is greater than the distance from the projection of the starting point of the diagonal line on the Y-axis to the coordinate center.

[0070] Since the starting and ending points of the diagonal line are projected onto the X and Y axes at different positions, the coordinates of points at different positions on the diagonal line will be different regardless of its length. When starting to sew the sewing thread, the garment fabric and back button fabric can be pressed tightly in the X and Y axis directions to achieve initial fixation of the garment fabric and back button fabric with size differences when sewing them.

[0071] As a further preferred embodiment of the above, such as Figure 2 As shown, the distance from the projection of the intersection of the first and second line segments on the X-axis to the coordinate center is L1, the distance from the projection of the intersection of the first and second line segments on the Y-axis to the coordinate center is L2, and the endpoint of the first line segment within the region formed by the negative half-axis of the X-axis and the positive half-axis of the Y-axis is the starting point of the second line segment.

[0072] Among them, pattern line segment one and pattern line segment two are set with a common intersection point, which can ensure that pattern line segment one and pattern line segment two can form a sufficient number of intersection positions during actual processing, thereby ensuring the tightness of the stitching between the bra back buckle fabric with two stitch lines that have multiple intersection positions.

[0073] As a further preferred embodiment of the above, such as Figure 2 and Figure 4 As shown, the projected length of the second pattern line segment on the Y-axis is longer than the projected length of the first pattern line segment on the Y-axis. The difference between the projected lengths of the second and first pattern line segments on the Y-axis is the tail segment. The projected length of the tail segment on the Y-axis is L5, and the projected length of the tail segment on the X-axis is W3. If the value of W3 is not 0, the tail segment is divided into equal stitch lengths, and the length interval of the division points on the tail segment is S4.

[0074] Among them, there is a length difference of L5 between pattern line segment two and pattern line segment one. This length difference can be used to form a sewing line at the corner of the bra back clasp fabric when the back clasp machine sews pattern line segment two on the bra back clasp fabric, thereby further reinforcing the tightness of the stitching of the back clasp fabric at the corner of the bra back clasp. If the value of W3 is not 0, the stitch length of the tail section is divided into evenly, and the projection length of the straight line formed by the evenly divided points on the Y-axis is equal to L5.

[0075] This invention also discloses a sewing pattern generation system for bra back clasps, such as... Figure 5 and Figure 6 As shown, it includes a signal input device, a processor for generating stitch data, and a data output interface for data transmission. The signal input device is equipped with an operation screen with an editing module. The editing module is equipped with an interface control unit for editing sewing pattern parameters, an interface option instruction group, and an input instruction group. The interface control unit edits the sewing pattern parameters by executing the instructions in the interface option instruction group and the input instruction group and displays them on the operation screen.

[0076] The interface option instruction group consists of several first sub-instructions. The first sub-instruction to be executed is determined by selecting function options in the function interface of the operation screen, and the execution of the first sub-instruction is achieved by the interface control unit to jump from the current function interface to the next level or the next level of function interface with function options.

[0077] The input instruction group includes several second sub-instructions for adjusting graphic parameters when defining pattern segment one and pattern segment two. The operation screen jumps to the parameter editing interface for editing the parameters of the overall sewing pattern, the parameters of pattern segment one, or the parameters of pattern segment two. The parameter editing interface has several editable options. After selecting the editable options in the parameter editing interface, editing can be performed, and after editing is completed, the second sub-instruction executed by the interface control unit is determined.

[0078] It should be noted that when the operator operates the screen with the editing module, they will select the first sub-instruction in the interface option instruction group or the second sub-instruction in the input instruction group. At this time, the interface control unit in the editing module will execute the first or second sub-instruction selected by the operator during the operation. After the interface control unit executes the selected first or second sub-instruction, the operation screen will display the execution result through the switching of the function interface or the change of the content displayed in the editable options in the parameter editing interface. Thus, when the operator generates the sewing pattern of the bra back buckle, the content displayed on the operation screen allows the operator to intuitively understand the setting options of each part of the sewing pattern during the generation process, as well as the specific parameter values ​​within the options. This makes the operation of the back buckle machine for bra back buckle sewing more smooth and also allows the operator to clearly understand the composition of each part of the sewing thread in the bra back buckle sewing process. It is also convenient to find the option with incorrect parameters and adjust it when processing errors occur.

[0079] As a further preferred embodiment of the above, such as Figure 7 and Figure 8 As shown, the functional interface and parameter editing interface include:

[0080] The pattern type interface is a function interface with several sewing pattern options, including the option to sew a back button reverse binding edge.

[0081] The global interface is a parameter editing interface with several editable options for adjusting the overall parameters of the sewing pattern;

[0082] Line segment editing interface one is a parameter editing interface with several editable options for adjusting the parameters of the pattern line segment one;

[0083] The second line segment editing interface is a parameter editing interface with several editable options for adjusting the parameters of the pattern line segment.

[0084] The editable parameters of the line segment editing interface one include the option to adjust the parameters of the middle section and the left and right sides of the pattern line segment one. The editable parameters of the line segment editing interface two include the option to adjust the parameters of the pattern line segment two located on the left and right sides of the pattern line segment one. The global interface, the line segment editing interface one, and the line segment editing interface two all have a function option two for switching the interface to the previous interface, a function option three for switching the interface to the next interface, and a function option four for confirming the editable options.

[0085] It should be further explained that the pattern type interface can contain a variety of sewing pattern types. By selecting the bra back clasp reverse binding sewing pattern in the pattern type interface, you can jump to the global interface, where you can adjust the parameters of the bra back clasp reverse binding sewing pattern in the global interface, line segment editing interface one, or line segment editing interface two.

[0086] As a further preferred embodiment of the above, such as Figure 7 and Figure 8 As shown, the editable options within the parameter editing interface include:

[0087] Editable option one is used to edit the coordinates of the center point of the coordinate system;

[0088] Editable option two allows you to edit the values ​​of L1, L2, L3, L4, and L5;

[0089] The third editable option allows you to edit the values ​​of W1, W2, and W3.

[0090] Editable option four is used to edit the stitch density values ​​of S1, S2, S3 and S4;

[0091] The fifth editable option is used to edit the angle value of ∠1.

[0092] In the global interface, editable options one and two can be edited. Editing option one adjusts the coordinates of the center point of the coordinate system, allowing the established coordinate system to adapt to the positional needs of bra back clasp fabrics of different specifications during reverse binding sewing, ensuring that the position of the reverse binding sewing pattern is within the processing range of the back clasp machine's needle. Editing option two in the global interface involves editing the value of L4, thereby adjusting the length of the reinforcing line segment. In the line segment editing interface one, editable options two, three, and four can be adjusted to change the projection length L1 of the middle segment of pattern line segment one on the X-axis, the projection length L2 of both sides of pattern line segment one on the Y-axis, and the pattern... The values ​​of the following can be adjusted: the projection length W1 of the middle section of line segment one on the Y-axis, the sum of the projection lengths W2 of the two sides of line segment one on the X-axis, the stitch length S1 of the middle section of line segment one, and the stitch length S2 of the two sides of line segment one, so that the shape of line segment one corresponds to the shape of the bra back clasp. In the line segment editing interface two, the editable options two, three, four, and five can be adjusted to adjust the projection length L3, W3, and L5 of line segment two on the Y-axis, the stitch length S3 and S4 of line segment two, and the angle ∠1 between line segment two and line segment one, so that the shape of line segment two corresponds to the shape of the bra back clasp.

[0093] This invention also discloses a method for processing sewing patterns on bra back clasps, such as... Figures 9-12 As shown, this processing method is used in the back buckle machine processing with an automatic feeding device 2 and a pressing device 3, and includes the following steps:

[0094] Step 1: On the pattern type interface of operation screen 4, select function option 1 for sewing back button reverse binding pattern. After clicking, it turns orange. Then click function option 4. Operation screen 4 will switch to the global interface.

[0095] Step 2: After setting the coordinate center point in the editable options in the global interface, click function option 4;

[0096] Step 3: After setting the parameters for the reinforced line segment in the editable options in the global interface, click function option 4;

[0097] Step 4: Measure the thickness of the back buckle, set the corresponding parameters of the editable options in the global interface, line segment editing interface 1, and line segment editing interface 2 according to the back buckle size specifications, and set and save the preset pattern number.

[0098] Step 5: After the user edits the sewing pattern through the signal input device, it is input into the processor. The processor generates the stitch data for step AE and outputs the stitch data to the back button machine through the data output interface. The back button machine then operates according to the stitch data.

[0099] It should be noted that when the back-fastening machine processes the back-fastening of a bra with reverse edge binding, after completing steps one to five, the servo system of the back-fastening machine receives the stitch data output from the data output interface. The stiffer back-fastening fabric 1 is placed on top of the softer back-fastening fabric 1 by manual operation and fixed by the automatic feeding device 2. Then, the start switch is pressed, and the fabric is transferred to the position near the machine head 5 by the automatic feeding device 2. The back-fastening fabric 1 is then pressed by the pressing device 3.

[0100] During the sewing process, the sewing needle 6 of the back button machine first sews the thread on one side of the back button fabric 1 according to the stitch data of pattern segment one. When the length of the thread segment processed by the sewing needle 6 on one side of the back button fabric 1 in the Y-axis direction reaches its set parameter value L2, the sewing needle 6 begins to sew the thread in the middle section of the back button fabric 1. When the length of the thread segment processed by the sewing needle 6 in the middle section of the back button fabric 1 in the Y-axis direction reaches its set parameter value L1, the sewing needle 6 begins to sew the thread on the other side of the back button fabric 1. When the length of the line segment processed by the sewing needle 6 on one side of the back button fabric 1 in the Y-axis direction reaches the set parameter value L2, the first sewing thread processing is completed, forming a sewing thread like the patterned line segment one on the surface of the back button fabric 1. If there may be a size error between the garment fabric and the back button fabric 1, before the sewing needle 6 starts sewing along the Y-axis, a reinforcement line segment is sewn in the opposite direction of the original sewing path of the sewing needle 6 on the Y-axis to initially reinforce one side of the back button fabric 1, ensuring that the garment fabric and the back button fabric 1 do not shift in position, thus affecting the stitching effect.

[0101] After the first sewing process, the stiffer back button fabric 1 is sewn into the softer back button fabric 1. After the back button fabric 1 is removed, the soft back button fabric 1 is folded in the opposite direction to the edge of the stiffer back button fabric 1 to form a reverse binding edge by manual operation. Then, the back button fabric 1 is fixed on top by the automatic feeding device 2 by manual operation. Then, the start switch is pressed, and the back button fabric 1 is transferred to the position near the machine head 5 by the automatic feeding device 2. Then, the back button fabric 1 is pressed by the pressing device 3.

[0102] The sewing needle 6 is positioned at the intersection of one side of pattern line segment one and pattern line segment two. The sewing needle 6 of the back button machine first sews the thread on one side of the back button fabric 1 according to the stitch data of pattern line segment two. When the length of the line segment processed by the sewing needle 6 on one side of the back button fabric 1 in the Y-axis direction reaches its set parameter value L3, the pressing device 3 moves the other side of the back button fabric 1 below the sewing needle 6. At this time, the sewing needle 6 is positioned at the intersection of the other side of pattern line segment one and pattern line segment two. When the length of the line segment processed by the sewing needle 6 in the middle section of the back button fabric 1 in the Y-axis direction reaches its set parameter value L2, the sewing needle 6 begins to sew the back button surface... On the other side of material 1, the sewing process is carried out. When the length of the line segment processed by the sewing needle 6 on one side of the back clasp fabric 1 in the Y-axis direction reaches the set parameter value L2, the second sewing process is completed, and a sewing line like the second patterned line segment is formed on the surface of the back clasp fabric 1. The bra back clasp with reverse binding is completed. If it is necessary to reinforce the corners of the reverse binding, the length of the sewing line during the second sewing can be extended by the tail section. When the length of the sewing line on one side of the back clasp fabric 1 reaches a length value equal to L3+L5, the sewing of one side of the back clasp fabric 1 is completed. The other section is also delayed by the tail section, thereby achieving reinforcement of the corners of the reverse binding.

[0103] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for generating a sewing pattern for a bra back clasp, the method being used to form a sewing pattern for the reverse edge of the bra back clasp during back clasp machine processing, the sewing pattern consisting of pattern line segment one and pattern line segment two, characterized in that, Includes the following steps: Step A: Establish a coordinate system. Establish a coordinate system with two directions, X and Y, to obtain the coordinate data of pattern segment one and pattern segment two in the sewing pattern. Step B: Define pattern line segment one. The pattern line segment one is formed by connecting line segments distributed in the positive and negative half-axis directions of the X-axis and line segments distributed in the Y-axis direction. The midpoint of the pattern line segment one in the X-axis direction is located at the coordinate center of the coordinate system. Set the projection length of the middle segment of the pattern line segment one on the X-axis as L1, set the projection length of the middle segment of the pattern line segment one on the Y-axis as W1, set the projection length of the two sides of the pattern line segment one on the Y-axis as L2, and set the projection length of the two sides of the pattern line segment one on the X-axis as W2. Step C, define pattern line segment two, which is a line segment distributed on both sides of pattern line segment one in the X-axis direction and intersecting pattern line segment one in the Y-axis direction at multiple points. Set the projection length of pattern line segment two on the Y-axis to L3, set the projection length of pattern line segment two on the X-axis to W3, and set the included angle between pattern line segment two and pattern line segment one to ∠1. Step D, line segment combination: Based on the length and width of pattern line segment one and pattern line segment two in the X and Y axes of the coordinate system as described in steps B and C, and obtain the connection point between pattern line segment two and pattern line segment one, until the connection between pattern line segment one and pattern line segment two is completed, the resulting graphic is the sewing pattern. Step E, stitch calculation: After the sewing pattern is generated, if at least one of the three values ​​W1, W2 and W3 is not 0, the sewing pattern is divided into average stitch lengths, and the average division points are used as stitch data for sewing processing. The length interval values ​​of the division points on the sewing pattern line segments corresponding to W1, W2 and W3 are S1, S2 and S3, respectively.

2. The generation method according to claim 1, characterized in that, In step B, the first pattern line segment includes a reinforcing line segment distributed along the Y-axis. The projected length of the reinforcing line segment on the Y-axis is L4, and the reinforcing line segment intersects with the portion of the first pattern line segment along the Y-axis.

3. The generation method according to claim 2, characterized in that, The starting point of the reinforcement line segment is located within the area formed by the negative half-axis of the X-axis and the negative half-axis of the Y-axis. The distance from the projection of the starting point of the reinforcement line segment in the X-axis direction to the coordinate center is L1 / 2. After the starting point of the reinforcement line segment transitions through an oblique line, it forms a straight line parallel to the Y-axis.

4. The generation method according to claim 3, characterized in that, The distance from the projection of the endpoint of the diagonal line on the X-axis to the coordinate center is greater than the distance from the projection of the starting point of the diagonal line on the X-axis to the coordinate center, and the distance from the projection of the endpoint of the diagonal line on the Y-axis to the coordinate center is greater than the distance from the projection of the starting point of the diagonal line on the Y-axis to the coordinate center.

5. The generation method according to claim 4, characterized in that, The distance from the projection of the intersection of the first and second line segments on the X-axis to the coordinate center is L1 / 2. The distance from the projection of the intersection of the first and second line segments on the Y-axis to the coordinate center is L2. The endpoint of the first line segment within the region formed by the negative half-axis of the X-axis and the positive half-axis of the Y-axis is the starting point of the second line segment.

6. The generation method according to claim 5, characterized in that, The projection length of the second pattern line segment on the Y-axis is longer than the projection length of the first pattern line segment on the Y-axis. The difference between the projection lengths of the second pattern line segment and the first pattern line segment on the Y-axis is the tail segment. The projection length of the tail segment on the Y-axis is L5, and the projection length of the tail segment on the X-axis is W3. If the value of W3 is not 0, the tail segment is divided into even stitch lengths.

7. A bra back clasp sewing pattern generation system, comprising the bra back clasp sewing pattern generation method as described in claim 6, a signal input device, a processor for generating stitch data, and a data output interface for data transmission, characterized in that, The signal input device is equipped with an operation screen with an editing module. The editing module is equipped with an interface control unit for editing sewing pattern parameters, an interface option instruction group, and an input instruction group. The interface control unit executes the instructions in the interface option instruction group and the input instruction group to edit the sewing pattern parameters and displays them on the operation screen. The interface option instruction group consists of several first sub-instructions. The first sub-instruction to be executed is determined by selecting function options in the function interface of the operation screen, and the execution of the first sub-instruction is achieved by the interface control unit to jump from the current function interface to the next level or the next level of function interface with function options. The input instruction group includes several second sub-instructions for adjusting graphic parameters when defining pattern segment one and pattern segment two. The operation screen jumps to the parameter editing interface for editing the parameters of the overall sewing pattern, the parameters of pattern segment one, or the parameters of pattern segment two. The parameter editing interface has several editable options. After selecting the editable options in the parameter editing interface, editing can be performed, and after editing is completed, the second sub-instruction executed by the interface control unit is determined.

8. The generation system according to claim 7, characterized in that, The functional interface and parameter editing interface include: The pattern type interface is a function interface with several sewing pattern options, including the option to sew a back button reverse binding edge. The global interface is a parameter editing interface with several editable options for adjusting the overall parameters of the sewing pattern; Line segment editing interface one is a parameter editing interface with several editable options for adjusting the parameters of the pattern line segment one; The second line segment editing interface is a parameter editing interface with several editable options for adjusting the parameters of the pattern line segment. The editable parameters of the line segment editing interface one include the option to adjust the parameters of the middle section and the left and right sides of the pattern line segment one. The editable parameters of the line segment editing interface two include the option to adjust the parameters of the pattern line segment two located on the left and right sides of the pattern line segment one. The global interface, the line segment editing interface one, and the line segment editing interface two all have a function option two for switching the interface to the previous interface, a function option three for switching the interface to the next interface, and a function option four for confirming the editable options.

9. The generation system according to claim 8, characterized in that, The editable options within the parameter editing interface include: Editable option one is used to edit the coordinates of the center point of the coordinate system; Editable option two allows you to edit the values ​​of L1, L2, L3, L4, and L5; The third editable option allows you to edit the values ​​of W1, W2, and W3. Editable option four is used to edit the stitch density values ​​of S1, S2, S3 and S4; The fifth editable option is used to edit the angle value of ∠1.

10. A method for processing a sewing pattern for a bra back clasp, the method being used in a back clasp machine equipped with the sewing pattern generation system, automatic feeding device, and pressing device as described in claim 9, characterized in that... Includes the following steps: Step 1: In the pattern type interface of the operation screen, select the sewing pattern option 1 for sewing back button reverse binding. After clicking, it will turn orange. Then click the fourth function option. The operation screen will switch to the global interface. Step 2: After setting the coordinate center point in the editable options in the global interface, click function option 4; Step 3: After setting the parameters for the reinforced line segment in the editable options in the global interface, click function option 4; Step 4: After measuring the size of the back buckle, set the corresponding parameters of the editable options in the global interface, line segment editing interface 1, and line segment editing interface 2 according to the back buckle size specifications, and set and save the preset pattern number. Step 5: After the user edits the sewing pattern through the signal input device, it is input into the processor. The processor then generates the stitch data for steps A to E in the sewing pattern generation method. The stitch data is output to the back button machine through the data output interface, and the back button machine works according to the stitch data.

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