Cloth cutting control method, device and equipment of buttonholing machine and storage medium

Abstract

The invention provides a cloth cutting control method, device and equipment of a buttonholing machine and a storage medium. The method comprises the following steps: determining a cloth feeding position and a cloth discharging position of a cutter according to an obtained sewing pattern; the sewing process is started, when the machine needle moves to the preset position, the cutter is controlled to move downwards in the vertical direction, and in the sewing process, when the cloth moves in the horizontal direction and the cutter is located at the cloth feeding position of the cutter in the horizontal direction, the cutter makes contact with the cloth. When the cutter moves downwards in the vertical direction to the lowest position point, the cutter is controlled to move up and down in a reciprocating mode in the vertical direction till the cutter is located at the cutter cloth discharging position in the horizontal direction, and the height of the lowest position point is larger than or equal to the cloth thickness. The problems of spindle speed reduction, stitch deformation and the like possibly caused by downward pressing type cloth cutting are solved, the sewing and cloth cutting efficiency is improved, and the attractiveness of finished products is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of sewing machines, and in particular to a cloth cutting control method, device, equipment and storage medium for a buttonhole machine. Background Art

[0002] Buttonhole machines are mainly used to sew various exquisite buttonholes on clothing, and the cloth cutting control method is one of the key technologies to achieve this function. With the increasing variety of textile materials, higher requirements are also put forward for the cloth cutting control of buttonhole machines to adapt to fabrics of different materials, thicknesses and elasticities.

[0003] At present, the cloth cutting mechanism of the flat-head buttonhole machine is basically intermittent cloth cutting, that is, before sewing, the length required to be cut and the starting point for each cloth cutting action of the cutter are calculated through the set pattern data. During the sewing process, when it runs to the cloth cutting action execution point each time, the cutter quickly performs a cloth cutting action, and the cloth cutting is completed by the cutter quickly penetrating the cloth downwards.

[0004] However, this method of applying pressure from top to bottom to make the blade of the cutter pierce the fabric is not ideal when cutting elastic fabrics, silk fabrics or thicker stacked fabrics. Due to the characteristics of the above fabrics, it is easy to cause brass or incomplete cutting, which affects the subsequent thread cutting effect and the appearance of the finished product. Summary of the invention

[0005] The embodiments of the present application provide a cloth cutting control method, device, equipment and storage medium for a buttonhole machine, so as to solve the problems in the prior art that when cutting cloth with high elasticity or silk cloth whose warp and weft threads are relatively easy to unravel, the cloth is easily pulled to cause deformation of the stitches, or the warp and weft threads fall off and affect the appearance, thereby reducing the complexity of operation and improving efficiency and the appearance of the finished product.

[0006] In a first aspect, an embodiment of the present application provides a cloth cutting control method for a buttonhole machine, comprising:

[0007] Get sewing patterns;

[0008] According to the sewing pattern, determining the cloth entry position and cloth exit position of the cutter;

[0009] Starting the sewing process, when the needle moves to a preset position, controlling the cutter to move downward in a vertical direction, wherein during the sewing process, the cloth moves in a horizontal direction, and when the cutter is at the cutter cloth-entry position in the horizontal direction, the cutter contacts the cloth;

[0010] When the cutter moves downward to the lowest position point in the vertical direction, the cutter is controlled to reciprocate up and down in the vertical direction until the cutter is in the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the cloth thickness.

[0011] Optionally, before starting the sewing process, the method further includes:

[0012] Controlling the presser foot to descend and monitoring the rotation of the motor of the presser foot;

[0013] When the motor of the presser foot stops rotating, determining the stop position of the presser foot;

[0014] The thickness of the cloth is determined according to the stop position of the presser foot and the lowest position of the presser foot, and the lowest position point of the cutter falling is determined according to the thickness of the cloth.

[0015] Optionally, after determining the thickness of the cloth, the method further includes:

[0016] The midway lifting point of the cutter is determined according to the cloth thickness and the cutting edge height of the cutter, and the midway lifting point is used to indicate the lifting height of the cutter during reciprocating motion.

[0017] Optionally, controlling the cutter to reciprocate up and down in a vertical direction includes:

[0018] The cutter is controlled to reciprocate up and down between the midway lifting point and the lowest position point.

[0019] Optionally, the method further includes:

[0020] If the cutter is at the cutter cloth discharging position in the horizontal direction, the cutter is controlled to move upward in the vertical direction until the cutter moves to an initial position point in the vertical direction.

[0021] In a second aspect, an embodiment of the present application provides a cloth cutting control device for a buttonhole machine, comprising:

[0022] An acquisition module, used for acquiring sewing patterns;

[0023] A determination module, used for determining a cloth-entry position of a cutter and a cloth-exit position of a cutter according to the sewing pattern;

[0024] A control module, used for starting the sewing process, and controlling the cutter to move downward in the vertical direction when the needle moves to a preset position, wherein during the sewing process, the cloth moves in the horizontal direction, and when the cutter is at the cutter cloth-entry position in the horizontal direction, the cutter contacts the cloth;

[0025] The control module is also used to control the cutter to reciprocate up and down in the vertical direction when the cutter moves downward to the lowest position point in the vertical direction until the cutter is in the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the thickness of the cloth.

[0026] Optionally, the control module is further used to control the descent of the presser foot and monitor the rotation of the motor of the presser foot;

[0027] The determining module is further used to determine the stop position of the presser foot when the motor of the presser foot stops rotating;

[0028] The determination module is further used to determine the thickness of the cloth according to the stop position of the presser foot and the lowest position of the presser foot, and to determine the lowest position point of the cutter according to the thickness of the cloth.

[0029] Optionally, the determination module is further used to determine the mid-lifting point of the cutter according to the thickness of the cloth and the cutting edge height of the cutter, and the mid-lifting point is used to indicate the lifting height of the cutter during reciprocating motion.

[0030] Optionally, the control module is also used to control the cutter to reciprocate up and down between the midway lifting point and the lowest position point.

[0031] Optionally, the control module is further configured to control the cutter to move upward in the vertical direction if the cutter is at the cutter cloth-discharging position in the horizontal direction, until the cutter moves to an initial position point in the vertical direction.

[0032] In a third aspect, an embodiment of the present application provides a cloth cutting control device for a buttonhole machine, comprising: a memory, a processor;

[0033] The memory stores computer-executable instructions;

[0034] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0035] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementations of the first aspect.

[0036] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0037] The cloth cutting control method, device, equipment and storage medium of the buttonhole machine provided in the embodiment of the present application improve the intermittent vertical cloth cutting method of the prior art into a continuous horizontal cloth cutting mechanism. The execution logic of the cloth cutting action is re-planned, and only the cloth cutting start and end positions of the cutter need to be determined, thereby simplifying the calculation process of cloth cutting and effectively eliminating the adverse effects caused by improper setting of the cutter size. During the sewing operation, the system will perform uninterrupted continuous cloth cutting operations, and the cloth cutting stroke can be automatically adjusted according to the thickness of the cloth. Not only does it simplify the operating process, but it also solves the problems of spindle speed reduction and stitch deformation that may be caused by downward pressure cloth cutting, thereby improving production efficiency and the aesthetics of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] Figure 1 A schematic diagram of the mechanical structure of the buttonhole machine provided for this application;

[0040] Figure 2 It is a schematic diagram of the cutter action position in the prior art;

[0041] Figure 3 It is a schematic diagram of the cutting knife motion trajectory in the prior art;

[0042] Figure 4 A schematic diagram of a method for controlling cloth cutting of a buttonhole machine provided in this application Figure 1 ;

[0043] Figure 5 A schematic diagram of a cutting knife motion trajectory of a cloth cutting control method for a buttonhole machine provided in the present application;

[0044] Figure 6 A schematic diagram of a method for controlling cloth cutting of a buttonhole machine provided in this application Figure 2 ;

[0045] Figure 7 A schematic diagram of the cutter action position of a cloth cutting control method for a buttonhole machine provided in the present application;

[0046] Figure 8 A schematic structural diagram of a cloth cutting control device for a buttonhole machine provided in the present application;

[0047] Fig. 9 A schematic structural diagram of a cloth cutting control device for a buttonhole machine provided in the present application.

[0048] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0050] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, products or devices.

[0051] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0052] Figure 1 The mechanical structure diagram of the buttonhole machine provided for this application is as follows: Figure 1 As shown, 1 is the cutter, 2 is the needle, 3 is the feed table, 4 is the presser foot, and 5 is the cloth. During use, the staff properly places the cloth 5 on the feed table 3; then, the presser foot 4 works to firmly fix the cloth 5 on the feed table 3; then, the needle 2 starts to work and is responsible for sewing the required pattern on the cloth; at the same time, the cutter 1 moves accurately and cuts the cloth 5 at the position specified by the pattern.

[0053] In the prior art, the cloth cutting mechanism of the flat-head buttonhole machine generally adopts an intermittent cutting method. Specifically, before the sewing operation begins, this mechanism will accurately calculate the length of the cloth to be cut and the specific position where the cutter starts the cutting action each time according to the preset pattern data (this process may involve one or more cuts). Subsequently, in the sewing process, each time the machine runs to the preset cutting action execution point, the cutter will quickly perform a cutting action and complete the cutting process by quickly piercing the cloth downward. It is worth noting that the length of the cloth cut in a single time is closely related to the size of the cutter itself. Therefore, if a cutter of different sizes needs to be replaced, the operator must manually adjust the corresponding cutter size parameters on the operation panel, otherwise, the final cutting effect may deviate from expectations, and in severe cases, the cloth may even be damaged.

[0054] Figure 2 Schematic diagram of the cutting knife action position in the prior art, as shown in FIG. Figure 2 As shown, Figure 2 The left side is the initial position of the cutter, and the right side is the position where the cutter falls. Existing cutters are basically sharpened on the lower vertical surface. The cloth cutting method is to quickly press down on the cloth at the initial position, so that the cutter rewinds to the position where the cutter falls, and the cloth is cut by squeezing the blade surface against the cloth. This method requires the system to calculate the number of cloth cutting actions that need to be performed and the position of each cloth cutting action based on the actual cutter size and the required cloth cutting length before cutting the cloth.

[0055] In the existing sewing process, the cloth cutting action is carried out together with sewing, that is, before sewing begins, it is necessary to calculate the number of times the knife cutting needs to be performed and the position of the sewing table when the knife starts to move each time the cloth is cut according to the pattern shape set by the user and the preset knife size and other information. Because sewing is always in progress during the cloth cutting process, the feed table is also always in action, so when calculating the cloth cutting action position, it is necessary to reserve a certain amount of overlap with the previous cloth cutting. In the calculation process described above, when the actual knife size changes, the corresponding size parameters in the system need to be readjusted to ensure the correct incision size.

[0056] Figure 3 is a schematic diagram of the cutting knife motion trajectory in the prior art, Figure 3 Take the case where three cloth cutting actions are required as an example. The actual number of actions and positions are determined according to the actual situation. Figure 3As shown in the figure, 11 is the outer needle drop position, 12 is the inner needle drop position, 13 is the incision position, 14, 15, 16 are the three cloth cutting positions, and 17 is the total cloth cutting length. Before sewing, the specific cloth cutting position needs to be calculated based on the incision length, cutter size and other data set by the user; and to ensure the continuity of the incision, it is necessary to reserve about 1mm of overlap with the previous cloth cutting action during calculation, such as Figure 3 As shown in the three cloth cutting positions, there is a 1mm overlap between the first cloth cutting position and the second cloth cutting position; if the cutter size calculated by the system does not match the actual cutter size used during calculation, then the actual incision each time will not match the program calculation value, which will eventually lead to the inability to cut continuously, or extend up and down beyond the allowable cloth cutting range. In serious cases, the stitches will be cut, causing the fabric to be scrapped.

[0057] In addition, when the calculated last cloth cutting action needs to be performed at the reinforcement stage at the end of sewing, that is, when the spindle controlling the needle is about to stop to complete sewing, in order to ensure that the cloth cutting action can be performed normally, the spindle is generally required to slow down, which will affect the sewing efficiency. The current solution is to modify the incision length and try to avoid length combinations that may cause speed reduction.

[0058] Finally, since the intermittent cutter actually applies pressure from top to bottom to the fabric, the blade of the cutter pierces the fabric; this method requires greater pressure and faster speed when dealing with elastic fabrics. During the cutting process, it is also easy to pull the fabric out, affecting the subsequent thread cutting effect; and when cutting silk fabrics, due to the particularity of the fabric, it is easy to produce the phenomenon of pulling after cutting, that is, part of the warp thread of the fabric near the incision falls off due to tension and other factors, affecting the appearance of the finished product.

[0059] In response to the above problems, the cloth cutting control method of the buttonhole machine provided in this application changes the existing intermittent downward pressure cloth cutting to continuous horizontal cloth cutting. By redesigning the execution logic of the cloth cutting action, only the positions of starting and ending cloth cutting need to be obtained, simplifying the cloth cutting calculation process and eliminating the impact caused by inconsistent cutter size settings; performing uninterrupted continuous cloth cutting during the sewing process, the cloth cutting stroke can be automatically adjusted according to the thickness of the cloth, while simplifying the operation, solving the problems of spindle speed reduction and stitch deformation that may be caused by downward pressure cloth cutting, improving efficiency and the appearance of the finished product.

[0060] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0061] Figure 4A schematic diagram of a method for controlling cloth cutting of a buttonhole machine provided in this application Figure 1 ,like Figure 4 As shown, the method includes:

[0062] S101, obtaining a sewing pattern.

[0063] It can be understood that when using a buttonhole machine, the user can select a sewing pattern through the display screen on the buttonhole machine. The system can obtain detailed sewing information through the sewing pattern selected by the user, clarify the sewing line and cutting requirements, etc.

[0064] S102, determining the cloth entry position and cloth exit position of the cutter according to the sewing pattern.

[0065] Figure 5 A schematic diagram of the cutter motion trajectory of a cloth cutting control method for a buttonhole machine provided in this application, such as Figure 5 As shown, 21 is the outer needle drop position, 22 is the inner needle drop position, 23 is the position of the incision, 24 is the total length of the cut cloth, 25 is the cloth entry position of the cutter, and 26 is the cloth exit position of the cutter. The figure drawn by the inner and outer needle drop positions is the sewing pattern selected by the user.

[0066] It is understandable that after obtaining the sewing pattern, the total length of the cut cloth needs to be determined according to the marks or instructions on the pattern, and the specific coordinates of the cutter starting to cut into the cloth (cloth entry position) and ending the cut (cloth exit position) need to be calculated. These positions are usually at the boundaries of the sewing pattern, that is, at both ends of the total length of the cut cloth, and are determined by the blade surface of the cutter.

[0067] It should be noted that compared with the cutting device of the existing flat-head buttonhole machine, the present application has made changes to the cutter. In the prior art, the cutting blade of the cutter is sharpened on the lower facade, so the cloth cutting method can only be downward pressure cutting; in the present application, the cutting direction of the cutter is arc-shaped, and the cutting edge extends from the lower facade to the left facade (the cutting direction can be changed according to actual needs, and can also be designed to be sharpened on the right facade or both facades. The control system is basically the same. Unless otherwise specified below, the description is based on the left facade). This cutting method can support horizontal cutting of the cloth.

[0068] S103, starting the sewing process, when the needle moves to the preset position, controlling the cutter to move downward in the vertical direction, wherein during the sewing process, the cloth moves in the horizontal direction, and when the cutter is at the cutter feeding position in the horizontal direction, the cutter contacts the cloth.

[0069] The preset position is a point close to the cloth-entering position of the cutter.

[0070] Understandably, during the sewing process, Figure 5As shown in the figure, the stitch direction of the flat-head buttonhole machine is to sew upward from the left parallel part, then pass the upper tack position, turn to the right parallel part, and then sew the lower tack part to complete the closing, that is, sew clockwise. After starting sewing, the needle starts to move, and when the needle moves to the predetermined position, the cutter starts to move down synchronously, so that when sewing to the cutter insertion position, the cutter is just inserted into the fabric.

[0071] S104, when the cutter moves downward in the vertical direction to the lowest position point, the cutter is controlled to reciprocate up and down in the vertical direction until the cutter is in the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the cloth thickness.

[0072] It is understandable that after the cutter contacts the cloth and reaches the lowest position, it will immediately perform an up and down reciprocating motion. This reciprocating motion not only helps to cut the cloth more smoothly and evenly, but also reduces excessive pressure on the cloth by the cutter and avoids damage to the cloth. Under the action of the feed table, the cloth will continue to move in the horizontal direction, and the cutter will continue to reciprocate up and down in the vertical direction. Under the joint action of the feed table and the cutter, the cutter gradually reaches the cloth-out position and completes the cloth-writing task. In this process, the height of the lowest position point is set to be at least equal to the maximum thickness of the cloth to ensure that the cutting can completely penetrate the cloth.

[0073] The cloth cutting control method of the buttonhole machine provided in the embodiment of the present application obtains the sewing pattern, and determines the cloth entry position and the cloth exit position of the cutter according to the sewing pattern. Start the sewing process, and when the machine needle moves to the preset position, control the cutter to move downward in the vertical direction, wherein during the sewing process, the cloth moves in the horizontal direction, and when the cutter is at the cloth entry position in the horizontal direction, the cutter contacts the cloth. When the cutter moves downward in the vertical direction to the lowest position point, control the cutter to reciprocate up and down in the vertical direction until the cutter is at the cloth exit position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the thickness of the cloth. This method simplifies the calculation process when the cutter executes cloth cutting, solves the problems of spindle speed reduction and stitch deformation that may be caused by downward pressure cloth cutting, improves the efficiency of sewing and cloth cutting, and ensures the aesthetics of the finished product.

[0074] Figure 6 A schematic diagram of a method for controlling cloth cutting of a buttonhole machine provided in this application Figure 2 ,like Figure 6 As shown, in this embodiment Figure 4 Based on the embodiment, a cloth cutting control method of a buttonhole machine is described in detail, and the method includes:

[0075] S201, obtaining a sewing pattern.

[0076] Among them, step S201 is similar to step S101 and will not be repeated here.

[0077] S202, determining the cloth entry position and cloth exit position of the cutter according to the sewing pattern.

[0078] Among them, step S202 is similar to step S102 and will not be repeated here.

[0079] S203, controlling the presser foot to descend and monitoring the rotation of the presser foot motor.

[0080] It is understandable that when the sewing equipment is started, the system first controls the presser foot to gradually drop from the lifted state, and this process is achieved by driving the motor. After receiving the command, the motor starts to run and drives the presser foot to drop. At the same time, the built-in sensor or monitoring module of the system will track and record the rotation of the motor in real time, including parameters such as the motor speed, direction, and current. These parameters can indirectly reflect the speed, stability, and possible resistance of the presser foot. By analyzing these data, the system can promptly detect whether the presser foot encounters abnormalities during the descent process (such as the fabric is too thick, causing the presser foot to be blocked), thereby ensuring the smooth progress of the sewing process.

[0081] S204, when the motor of the presser foot stops rotating, determining the stop position of the presser foot.

[0082] It is understandable that when the presser foot drops to contact the fabric and reaches the predetermined pressure, the motor will stop rotating, and the position of the presser foot at this time is the stop position. The system accurately measures and records this position through the built-in sensor. Since fabrics of different thicknesses will produce different resistances to the presser foot, thus affecting the final stop position of the presser foot, determining the stop position of the presser foot is crucial for subsequent judgment of fabric thickness. The system will quickly lock the current position of the presser foot based on the signal when the motor stops rotating, providing accurate data support for subsequent calculations and adjustments.

[0083] S205, determining the thickness of the fabric according to the stop position of the presser foot and the lowest position of the presser foot, and determining the lowest position point of the cutter according to the thickness of the fabric.

[0084] It is understandable that after obtaining the stop position of the presser foot, the system will compare it with the lowest position of the presser foot when it is completely unloaded, and calculate the difference between the two. This difference can reflect the resistance of the presser foot to the fabric during the descent process, and then indirectly infer the thickness of the fabric. The lowest position point of the cutter is set according to the thickness of the fabric, so that the cutter can completely penetrate the fabric during the subsequent descent process.

[0085] S206, determining a midway lifting point of the cutter according to the cloth thickness and the cutting edge height of the cutter, wherein the midway lifting point is used to indicate the lifting height of the cutter during reciprocating motion.

[0086] It can be understood that the cutting edge height of the cutter is the distance from the lowest point of the blade to the highest point of its effective cutting part, and is a key parameter in the design of the cutter. This parameter determines the maximum depth that the cutter can penetrate the fabric. Once the fabric thickness is determined, the system will calculate the depth to which the cutter needs to penetrate the fabric to ensure the cutting effect based on a preset algorithm or empirical rule. This depth should be slightly greater than the thickness of the fabric to ensure the thoroughness of the cut, but not to damage the cutter or the material under the fabric. Finally, the mid-lift point of the cutter is determined based on the cutting edge height of the cutter. This lift point should be set based on the required depth of the cutter to penetrate the fabric, plus a certain safety margin to ensure that the cutter can rise smoothly to this height during the cutting process.

[0087] S207, starting the sewing process, when the needle moves to the preset position, controlling the cutter to move downward in the vertical direction, wherein during the sewing process, the cloth moves in the horizontal direction, and when the cutter is at the cutter feeding position in the horizontal direction, the cutter contacts the cloth.

[0088] Among them, step S207 is similar to step S103 and will not be repeated here.

[0089] S208, when the cutter moves downward in the vertical direction to the lowest position point, the cutter is controlled to reciprocate up and down between the midway lifting point and the lowest position point until the cutter is at the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the cloth thickness.

[0090] Figure 7 A schematic diagram of the cutter action position of a cloth cutting control method for a buttonhole machine provided in this application, such as Figure 7 As shown, Figure 7 The left side is the initial position of the cutter, the middle is the mid-lifting position of the cutter, and the right side is the falling position of the cutter. The cutter always moves in the vertical direction. During use, the cutter will first fall vertically from the initial position on the left to the lowest position on the right, and then move up and down between the mid-lifting point in the middle and the lowest position on the right. When the cutter is in the horizontal cutter cloth-out position, no matter where the cutter is, it will rise to the initial position on the left.

[0091] It is understandable that after the cutter just enters the fabric, it will continue to move downward until it reaches the lowest position set for the cutter, and then the cutter will reciprocate up and down between the midway lifting point and the lowest position point, using the edge of the left vertical surface to cut the fabric. Because during the entire cutter action process, the spindle has been moving at the set speed, and the fabric will continue to be fed from the feed table to the outside of the buttonhole machine uninterruptedly, with the reciprocating motion of the cutter in the vertical direction, continuous cutting of the fabric can be achieved. When sewing enters the lower tack part, the cutter is usually in the cutter cloth outlet position, and the incision will be completely cut.

[0092] S209, controlling the cutter to move upward in the vertical direction until the cutter moves to an initial position point in the vertical direction.

[0093] It is understandable that the running routes of the cutter and the sewing machine needle are two separate parts. After the cutter is in the cutter cloth-out position, the incision has been completely cut, and the cutter can be controlled to return to the initial position of the cutter. At this point, the cutter action is completely completed, and the spindle continues to sew until the entire sewing process is completed. If sewing is completed, the cutter can also continue to complete the cutting, and then return to the initial position. The result of the cutter cutting will not affect the result of sewing.

[0094] Importantly, the embodiments of the present application are all described by taking the cutting blade surface as the left vertical surface as an example. If the cutting blade surface used by the user is the right vertical surface, then Figure 5 25 is the cloth-out position of the cutter, and 26 is the cloth-in position of the cutter. When sewing the left parallel part begins, the cutter can be lowered to perform the cloth-cutting action, and when sewing the left parallel part is finished, the cutter can be raised. If the user uses the left and right double-sided blade, the user can choose the movement direction when cutting the cloth.

[0095] The cloth cutting control method of the buttonhole machine provided in the embodiment of the present application obtains the sewing pattern, determines the position of the cutter, controls the descent of the presser foot and monitors the rotation of its motor, determines the thickness of the cloth by the difference between the stop position and the lowest position, and then sets the lowest drop point and the midway lifting point of the cutter. When sewing, the cloth moves horizontally, and the cutter contacts the cloth vertically downward at the preset needle position. After reaching the lowest point, it starts to reciprocate between the midway lifting point and the lowest point until the cutting is completed, and finally the cutter rises vertically to the initial position. This method realizes the automatic adjustment of the cutter position and movement trajectory according to the thickness of the cloth, ensures accurate cutting and adapts to different cloths, improves sewing efficiency and cutting quality, reduces manual adjustments, and realizes precise cutting control in the automated sewing process.

[0096] Figure 8 A structural schematic diagram of a cloth cutting control device for a buttonhole machine provided in this application, such as Figure 8 As shown, the cloth cutting control device 300 of the buttonhole machine provided in this embodiment includes:

[0097] An acquisition module 301 is used to acquire a sewing pattern;

[0098] A determination module 302 is used to determine a cloth-entry position of a cutter and a cloth-exit position of a cutter according to the sewing pattern;

[0099] The control module 303 is used to start the sewing process, and when the needle moves to a preset position, control the cutter to move downward in the vertical direction, wherein during the sewing process, the cloth moves in the horizontal direction, and when the cutter is at the cutter cloth entry position in the horizontal direction, the cutter contacts the cloth;

[0100] The control module 303 is also used to control the cutter to reciprocate up and down in the vertical direction when the cutter moves downward to the lowest position point in the vertical direction until the cutter is in the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the thickness of the cloth.

[0101] Optionally, the control module 303 is further used to control the presser foot to descend and monitor the rotation of the motor of the presser foot;

[0102] The determination module 302 is further used to determine the stop position of the presser foot when the motor of the presser foot stops rotating;

[0103] The determination module 302 is further used to determine the thickness of the cloth according to the stop position of the presser foot and the lowest position of the presser foot, and to determine the lowest position point of the cutter according to the thickness of the cloth.

[0104] Optionally, the determination module 302 is further used to determine a midway lifting point of the cutter according to the cloth thickness and the cutting edge height of the cutter, wherein the midway lifting point is used to indicate the lifting height of the cutter during reciprocating motion.

[0105] Optionally, the control module 303 is further used to control the cutter to reciprocate up and down between the midway lifting point and the lowest position point.

[0106] Optionally, the control module 303 is further configured to control the cutter to move upward in the vertical direction if the cutter is at the cutter cloth-discharging position in the horizontal direction, until the cutter moves to an initial position point in the vertical direction.

[0107] The cloth cutting control device for a buttonhole machine provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be described in detail here.

[0108] Fig. 9 This is a schematic diagram of the structure of a cloth cutting control device for a buttonhole machine provided in this application. Fig. 9As shown, the electronic device 400 provided in this embodiment includes: at least one processor 401 and a memory 402. Optionally, the device 400 also includes a communication component 403. The processor 401, the memory 402 and the communication component 403 are connected via a bus 404.

[0109] In a specific implementation process, at least one processor 401 executes the computer-executable instructions stored in the memory 402, so that at least one processor 401 executes the above method.

[0110] The specific implementation process of the processor 401 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0111] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the invention can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0112] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0113] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0114] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0115] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0116] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0117] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0118] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0119] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0120] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0121] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0122] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0123] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A cloth cutting control method for a buttonhole machine, characterized in that: include: Get sewing patterns; According to the sewing pattern, determining the cloth entry position and cloth exit position of the cutter; Starting the sewing process, when the needle moves to a preset position, controlling the cutter to move downward in a vertical direction, wherein during the sewing process, the cloth moves in a horizontal direction, and when the cutter is at the cutter cloth-entry position in the horizontal direction, the cutter contacts the cloth; When the cutter moves downward to the lowest position point in the vertical direction, the cutter is controlled to reciprocate up and down in the vertical direction until the cutter is in the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the cloth thickness.

2. The method according to claim 1, characterized in that Before starting the sewing process, the method further comprises: Controlling the presser foot to descend and monitoring the rotation of the motor of the presser foot; When the motor of the presser foot stops rotating, determining the stop position of the presser foot; The thickness of the cloth is determined according to the stop position of the presser foot and the lowest position of the presser foot, and the lowest position point of the cutter falling is determined according to the thickness of the cloth.

3. The method according to claim 2, characterized in that After determining the thickness of the fabric, the method further includes: The midway lifting point of the cutter is determined according to the cloth thickness and the cutting edge height of the cutter, and the midway lifting point is used to indicate the lifting height of the cutter during reciprocating motion.

4. The method according to claim 3, characterized in that The step of controlling the cutter to reciprocate up and down in the vertical direction comprises: The cutter is controlled to reciprocate up and down between the midway lifting point and the lowest position point.

5. The method according to claim 1, characterized in that The method further comprises: If the cutter is at the cutter cloth discharging position in the horizontal direction, the cutter is controlled to move upward in the vertical direction until the cutter moves to an initial position point in the vertical direction.

6. A cloth cutting control device for a buttonhole machine, characterized in that: include: An acquisition module, used for acquiring sewing patterns; A determination module, used for determining a cloth-entry position of a cutter and a cloth-exit position of a cutter according to the sewing pattern; A control module, used for starting the sewing process, and controlling the cutter to move downward in the vertical direction when the needle moves to a preset position, wherein during the sewing process, the cloth moves in the horizontal direction, and when the cutter is at the cutter cloth-entry position in the horizontal direction, the cutter contacts the cloth; The control module is also used to control the cutter to reciprocate up and down in the vertical direction when the cutter moves downward to the lowest position point in the vertical direction until the cutter is in the cutter cloth-out position in the horizontal direction, wherein the height of the lowest position point is greater than or equal to the thickness of the cloth.

7. The device according to claim 6, characterized in that The device also includes: The control module is also used to control the descent of the presser foot and monitor the rotation of the motor of the presser foot; The determining module is further used to determine the stop position of the presser foot when the motor of the presser foot stops rotating; The determination module is further used to determine the thickness of the cloth according to the stop position of the presser foot and the lowest position of the presser foot, and to determine the lowest position point of the cutter according to the thickness of the cloth.

8. The device according to claim 6, characterized in that The device also includes: The determination module is further used to determine a midway lifting point of the cutter according to the cloth thickness and the cutting edge height of the cutter, wherein the midway lifting point is used to indicate the lifting height of the cutter during reciprocating motion.

9. A cloth cutting control device for a buttonhole machine, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 5 when executed by a processor.

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