A neckline sewing control system

Abstract

The present invention discloses a collar sewing control system, specifically related to the technical field of collar sewing, which includes a sewing mechanism, an upper feed dog, a lower feed dog, a differential motor, a differential transmission mechanism, and a first roller and a second roller for feeding. The differential motor and the differential transmission mechanism are used to control the speeds of the upper and lower feed dogs; it also includes a collar calculation module for calculating the total length of the collar, a collar length storage module for reading and storing the total length of the collar, a collar allocation module for allocating the collar into four intervals: a front collar section, a left accommodation section, a rear collar section, and a right accommodation section according to a ratio and outputting the allocation result, and a speed control module for sending a speed control command to the differential motor according to the output allocation result and controlling the upper and lower feed dogs to feed at different differential speeds in the four intervals; the collar is partitioned and the upper and lower feed dogs are fed at different differential speeds according to different partitions, so as to realize the personalized production of the collar.

Description

Technical Field

[0001] The present invention relates to the technical field of neckline sewing, and particularly to a neckline sewing control system. Background Art

[0002] With the development of e-commerce, people's purchasing power of clothing has greatly increased, which poses a great challenge to the production rate and aesthetics of factory clothing. It is necessary to produce a large number of beautiful clothes in a short time. In clothing manufacturing, the sewing of the neckline is particularly important. During the sewing process of the clothing neckline, the neckline and the rib often cause sewing errors due to the deviation between the two; when changing to other size necklines, it needs to be refixed, resulting in low efficiency; during the neckline sewing process, it can only be sewn at a unified speed, or it is necessary to constantly change to other speeds for sewing, resulting in the inability to make the neckline sewing personalized and the sewing time being too long; the inability to improve the sewing aesthetics of the neckline allowance, etc., are all problems encountered in current neckline sewing.

[0003] The patent with the patent number ZL202221989553.0 discloses a spacing adjustment mechanism for the upper feed dog of an overlock sewing machine, including an adjustment shaft installed in the overlock sewing machine base. One end of the adjustment shaft is connected with a fork-shaped part, and the other end is connected with an adjustment rod through a connecting plate; the adjustment rod extends out of the top surface of the overlock sewing machine base and is connected with a handle; the handle is slidably installed in the handle chute of the handle locking plate. A spacing adjustment mechanism for the upper feed dog of an overlock sewing machine installs the handle on the top of the overlock sewing machine base, and controls the front and back feeding distance of the feed dog rack by controlling the rotation angle of the adjustment shaft. A locking bolt is installed in the middle of the handle to prevent the adjustment rod from loosening due to vibration during work. Through this adjustment mechanism, the spacing of the upper feed dog can be adjusted to adapt to different clothing sewing, but it cannot intelligently perform overlock sewing on different collars at different speeds to achieve flatness of the front and back of the clothes. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a neckline sewing control system for solving the problems of difficult neckline length distribution, the same sewing speed, and uneven neckline allowance in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is a neckline sewing control system, including a sewing mechanism, an upper feed dog, a lower feed dog, a differential motor, a differential transmission mechanism, and a first roller and a second roller for feeding. The differential motor and the differential transmission mechanism are used to control the speeds of the upper feed dog and the lower feed dog;

[0006] It further includes: a neckline calculation module for calculating the total length of the neckline;

[0007] A neckline length storage module for reading and storing the total length of the neckline;

[0008] The neckline allocation module allocates the neckline into four intervals: the front neckline section, the left allowance section, the back neckline section, and the right allowance section in proportion, and outputs the allocation result.

[0009] The speed control module sends a speed control command to the differential motor according to the output allocation result, and controls the upper feed dog and the lower feed dog to feed the fabric at different differential speeds in the four intervals through the differential motor.

[0010] Further, when the speed control module sends a speed control command in the front neckline section and the back neckline section, the feeding speed of the upper feed dog and the lower feed dog is equal to the feeding speed of the first roller and the second roller; when the speed control module sends a speed control command in the left allowance section and the right allowance section, the feeding speed of the upper feed dog and the lower feed dog is greater than the feeding speed of the first roller and the second roller.

[0011] Further, it further includes a feeding stroke calculation module, which calculates the feeding stroke of the first roller and the second roller from the starting sewing point of the neckline and transmits the feeding stroke data to the speed control module.

[0012] Further, the formula for calculating the total length of the neckline of the neckline calculation module is as follows:

[0013]

[0014] In the formula, is the total length of the neckline, is the preset length, is the moving distance of the first roller.

[0015] Further, the moving distance L of the first roller calculates the total length of the neckline by interval, and the interval range of L is 5 mm to 15 mm.

[0016] Further, it further includes a yardage storage module, which numbers the total length of the neckline in the same interval range with the same yardage and stores the yardage.

[0017] Further, it further includes a proportional allocation calculation module, which calculates the proportions of the four intervals of the front neckline section, the left allowance section, the back neckline section, and the right allowance section according to the total length of the neckline obtained by the neckline calculation module and the initially input lengths of the front neckline piece and the back neckline piece, and transmits them to the neckline allocation module.

[0018] Further, the proportional allocation calculation module directly inputs the length proportions of the front neckline section, the left allowance section, the back neckline section, and the right allowance section according to the actual situation.

[0019] Further, an alarm module is further included. The alarm module presets a warning value and reads the total neckline length and the preset total neckline length. When the total neckline length exceeds the preset warning value or the total neckline length exceeds the preset total neckline length, the alarm module outputs an alarm signal.

[0020] Further, a photoelectric induction module is further included, which is used to detect the starting and ending positions of each section of the neckline. When the photoelectric induction module fails to detect the starting or ending position of each section of the neckline, an alarm signal is transmitted to the alarm module.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] (1) For a neckline sewing control system of the present invention, the upper feed dog and the lower feed dog are directly controlled by a differential motor and a differential transmission mechanism, avoiding excessive components from participating in the operation, and improving the sewing accuracy and efficiency;

[0023] (2) Through the proportional distribution calculation module, the proportions of the front neck section length and the rear neck section length input for the first time and the four sections of the front neck section, the left accommodation section, the rear neck section, and the right accommodation section obtained by the neckline calculation module are calculated. According to the proportions, the collar is proportioned by the neckline distribution module, and then the feed dog performs feeding operations at different differential speeds for different proportioned sections of the neckline through the speed control module, so as to realize the personalized production of the neckline and meet the production requirements of each area of the neckline;

[0024] (3) When in the left and right accommodation sections, the speed control module controls the feeding speeds of the upper feed dog and the lower feed dog to be greater than the feeding speed of the first roller and the second roller, making the feed dog more conform to the fabric, so that more fabric is sewn into the neckline accommodation, thereby improving the aesthetics of sewing;

[0025] (4) Through the yardage storage module, the necklines with the total length calculated after being sewn are divided into codes by sections. When using the necklines of the same code segment later, the yardage can be directly obtained, improving the efficiency of replacing the neckline for sewing. Brief Description of the Drawings

[0026] Figure 1 is a structural schematic diagram of a neckline sewing control system;

[0027] Figure 2 is Figure 1 a structural schematic diagram of the upper feed dog and the lower feed dog in

[0028] Figure 3 is Figure 1 a structural schematic diagram of the differential motor and the differential transmission mechanism in

[0029] Figure 4 is a flowchart of a neckline sewing control system. Detailed Embodiments

[0030] The following are specific embodiments of the present invention. In combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0031] As Figures 1 to 4 shown, a collar sewing control system of the present invention includes a sewing mechanism 1, an upper feed dog 2, a lower feed dog 3, a first roller 6 and a second roller 7 for feeding. A differential motor 4 and a differential transmission mechanism 5 are used to control the speeds of the upper feed dog 2 and the lower feed dog 3;

[0032] The upper feed dog 2 and the lower feed dog 3 are arranged in an up-and-down relative position. The upper feed dog 2 and the lower feed dog 3 are connected to the differential motor 4 through the differential transmission mechanism 5. The upper feed dog 2 and the lower feed dog 3 are connected to the upper feed dog 2 and the lower feed dog 3 through a differential adjustment shaft inside the sewing mechanism 1. The differential motor 4 drives the differential adjustment shaft inside the sewing mechanism 1 through the differential transmission mechanism 5 to control the upper feed dog 2, so that the upper feed dog 2 cooperates with the lower feed dog 3 to perform the feeding operation at the needle position. The first roller 6 is located on the right side of the sewing mechanism 1, and the second roller 7 is located on the left side of the sewing mechanism 1. The first roller 6 is located on the right side of the sewing mechanism 1, and the second roller 7 is located on the left side of the sewing mechanism 1. After the fabric is put on the first roller 6 and the second roller 7, the first roller 6 and the second roller 7 are used to stretch the fabric and feed it. In this embodiment, the differential transmission mechanism 5 is driven in a gear manner, but in specific implementation operations, it can also be replaced with a lead screw, a swing rod, etc. for transmission adjustment. When the sewing mechanism 1 sews the collar, the collar passes through the first roller 6, between the intersection of the upper feed dog 2 and the lower feed dog 3, and the second roller 7 in sequence. The differential motor 4 drives the upper feed dog 2 and the lower feed dog 3 to perform reciprocating up-and-down movements through the gear transmission of the differential transmission mechanism 5. At the same time, the first roller 6 and the second roller 7 drive the fabric to rotate. The collar section, left accommodation section, right accommodation section, and back collar section of the collar pass through between the upper feed dog 2 and the lower feed dog 3 in sequence, and are sewn by the needle of the sewing mechanism 1.

[0033] Further, the system further includes: a collar calculation module for calculating the total length of the collar;

[0034] a collar length storage module for reading and storing the total length of the collar;

[0035] a collar allocation module that allocates the collar into four intervals: a front collar section, a left accommodation section, a back collar section, and a right accommodation section in proportion, and outputs the allocation result;

[0036] a speed control module that sends a speed control command to the differential motor 4 according to the output allocation result, and controls the upper feed dog 2 and the lower feed dog 3 to feed at different differential speeds in the four intervals through the differential motor 4.

[0037] When the sewing mechanism performs a sewing operation, the collar is sleeved on the first roller 6 and the second roller 7. The neckline calculation module calculates the total length of the clothing neckline and transmits the calculated total length data to the neckline length storage module for storage, facilitating the subsequent reading of the total neckline length. Since the elasticity of collars made of different materials is different, the corresponding total neckline length can be set according to collars of different materials. When performing the first sewing operation on the neckline, the operator sequentially inputs the lengths of the front collar section and the rear collar section of the neckline, and calculates the proportional ratios of the four intervals of the front collar section, the left allowance section, the rear collar section, and the right allowance section of the neckline based on the input collar section lengths and the actual total neckline length obtained by calculation by the neckline calculation module. Then, the calculated proportional data is transmitted to the neckline allocation module. The neckline is allocated into four length intervals of the front collar section, the left allowance section, the rear collar section, and the right allowance section with corresponding ratios according to the proportional data and the total neckline length, and the allocation result is output to the speed control module.

[0038] When the speed control module receives the allocation result, it sends a speed control command to the differential motor 4 according to the allocation result to drive the upper feed dog 2 and the lower feed dog 3 to cooperate in feeding the cloth. At the same time, the first roller 6 and the second roller 7 start to feed the material, and the sewing mechanism 1 sews the neckline. Among them, the feeding speed between the first roller 6 and the second roller 7 remains unchanged, and the material is fed at a uniform speed. The collar is sewn in the order of the left allowance section, the front collar section, the right allowance section, and the rear collar section in turn.

[0039] When performing a sewing operation at the left allowance section, the speed control module controls the differential motor 4 to drive the differential transmission mechanism 5 to drive the upper feed dog 2 and the lower feed dog 3 to cooperate in feeding the cloth at a cloth feeding speed greater than the feeding speed, and the sewing mechanism 1 performs a sewing operation at the left allowance section; when performing a sewing operation at the front collar section, the speed control module controls the differential motor 4 to drive the differential transmission mechanism 5 to drive the upper feed dog 2 and the lower feed dog 3 to cooperate in feeding the cloth at a cloth feeding speed equal to the feeding speed, and the sewing mechanism 1 performs a sewing operation on the front collar section; when performing a sewing operation at the right allowance section, the speed control module controls the differential motor 4 to drive the differential transmission mechanism 5 to drive the upper feed dog 2 and the lower feed dog 3 to cooperate in feeding the cloth at a cloth feeding speed greater than the feeding speed, and the sewing mechanism 1 performs a sewing operation at the right allowance section; when performing a sewing operation at the rear collar section, the speed control module controls the differential motor 4 to drive the differential transmission mechanism 5 to drive the upper feed dog 2 and the lower feed dog 3 to feed the cloth at a cloth feeding speed equal to the feeding speed, and the sewing mechanism 1 performs a sewing operation on the rear collar section, thus completing the sewing operation on the entire neckline. Since the cloth feeding speed of the upper feed dog 2 driven by the differential motor 4 is greater than the feeding speed of the first roller 6 and the second roller 7 when performing sewing operations at the left allowance section and the right allowance section, the upper feed dog 2 can feed more cloth to the sewing mechanism 1, and the sewing mechanism 1 can sew more cloth at the two allowance positions, so that the cloth at the two allowance positions is tightened, improving the aesthetics of the sewing.

[0040] Further, the system further includes a feeding stroke calculation module, which calculates the feeding strokes of the first roller 6 and the second roller 7 from the starting sewing point of the collar, and transmits the feeding stroke data to the speed control module. The sewing intervals corresponding to the feeding strokes of the first roller 6 and the second roller 7 are determined and the data is sent to the speed control module, and the speed control module controls the differential motor 4 to drive the upper feed dog 2 at the feeding speed within this interval.

[0041] Further, when the collar is fully stretched on the first roller 6 and the second roller 7, the collar calculation module calculates the total length of the collar. The formula for calculating the total length of the collar is as follows:

[0042]

[0043] In the formula, is the total length of the collar, is the preset length, is the moving distance of the first roller. Different preset length processes are performed according to different sewing machines. Since the collar is sleeved between the first roller 6 and the second roller 7, the moving distance of the first roller 6 is half of the stretching length of the collar, so the total length of the collar is the sum of the preset length of the current sewing machine and twice the moving distance of the first roller 6.

[0044] In order to avoid differences in the sewing effect of the collar caused by measurement errors, the moving distance L of the first roller 6 calculates the total length of the collar in intervals. The interval range of L is 5 mm to 15 mm. In this embodiment, the value of L is in intervals of 10 mm. For example, when L is in the interval of 0 to 10 mm, the average value of 5 mm is used to calculate the total length of the collar. When L is in the interval of 11 to 20 mm, the average value of 15 mm is used to calculate the total length of the collar, and so on. According to the total length of the collar calculated by the formula, different total lengths of the fabric correspond to different collar code segments, thereby completing the distinction of the collar code segments. The value of L can also be calculated in intervals of 5 mm, 8 mm or 15 mm.

[0045] Further, it further includes a yardage storage module. The yardage storage module numbers the total lengths of the collars in the same interval range as the same yardage and stores the yardage. After performing the sewing operations of collars with different yardages, according to the total length of the collar and the distribution ratio, the yardage storage module numbers the total lengths of the collars in the same interval range as the same yardage. When performing the sewing operation on the collar of the same yardage again later, only the corresponding yardage needs to be confirmed and selected in the system, without secondary measurement and distribution of the collar length, improving the working efficiency of sewing.

[0046] Further, during actual sewing operations, since there may be collars in the same batch that require sewing operations with specific requirements, according to the actual situation, the operator can directly input the length ratios of the front collar section, left allowance section, rear collar section, and right allowance section in the ratio distribution calculation module. Based on the initially input front collar piece length and rear collar piece length and the total collar length obtained by the collar calculation module, the ratios of the four intervals of the front collar section, left allowance section, rear collar section, and right allowance section are calculated and sent to the collar distribution module. The collar distribution module distributes the collar proportionally into four intervals: the front collar section, left allowance section, rear collar section, and right allowance section. Thus, according to the distribution result, the speed control module performs corresponding sewing operations on the collar. This can add uniqueness to collar sewing, and it is also possible to perform sewing operations with specific proportional lengths during the sewing of collars in the same batch.

[0047] Further, the system also includes an alarm module. The alarm module presets a warning value to prevent the collar from being stretched too much or too little. The alarm module reads the actual total collar length calculated by the collar calculation module and the preset total collar length. When the total collar length exceeds the preset warning value or the total collar length exceeds the preset total collar length, it means that the collar is stretched too much. The alarm module outputs an alarm signal for alarm notification to prompt the staff to take emergency measures.

[0048] Further, the system also includes a photoelectric induction module, which is used to detect the start and end positions of the four intervals of the front collar section, left allowance section, rear collar section, and right allowance section of the collar. When the photoelectric induction module detects the start position of a certain interval, it transmits a control signal to the speed control module, and through the speed control module, it controls the differential motor 4 to feed the cloth at the differential speed of this interval. When the photoelectric induction module detects the end position of this interval, it transmits a control signal to the speed control module, and through the speed control module, it controls the differential motor 4 to stop feeding the cloth, and based on the detected start position, it determines the next interval and transmits a control signal to the speed control module to control the differential motor 4 to feed the cloth at the differential speed of the next interval. When the photoelectric induction module does not detect the start or end position of each interval of the collar, it may mean that the collar has fallen off or the allocated interval length does not match the actual length, etc. The photoelectric induction module transmits an alarm signal to the alarm module to notify the operator to check, thereby improving the accuracy of collar sewing.

[0049] In summary, a collar sewing control system of the present invention includes a sewing mechanism, an upper feed dog, a lower feed dog, a differential motor, a differential transmission mechanism, and a first roller and a second roller for feeding. The differential motor and the differential transmission mechanism are used to control the speeds of the upper feed dog and the lower feed dog; it further includes a collar calculation module for calculating the total length of the collar, a collar length storage module for reading and storing the total length of the collar, a proportional distribution calculation module for calculating the proportions of four intervals, namely the front collar section, the left allowance section, the rear collar section, and the right allowance section, based on the initially input lengths of the front collar piece and the rear collar piece and the total length of the collar obtained by the collar calculation module, a collar allocation module for reading the proportional data of the proportional distribution calculation module, allocating the collar into four intervals of the front collar section, the left allowance section, the rear collar section, and the right allowance section with corresponding proportions according to the proportional data, and outputting the allocation result, and a speed control module for sending a speed control command to the differential motor according to the output allocation result and controlling the upper feed dog and the lower feed dog to feed at different differential speeds in the four intervals through the differential motor. First, it ensures that the stretching of the collar to be sewn is within the set range, which helps to improve the quality and consistency of the product. And it provides a friendly user interface for this purpose, enabling the operator to easily set various parameters, view the stretching length, the lengths and proportions of the front and rear collars, the width of the collar, the differential and roller speeds, and the collar allocation schematic diagram. Through automated control and parameter setting, the errors caused by manual operation are reduced, and the qualified rate of the product is improved; when replacing the collar, the total length of the collar is allocated into the front collar section, the left allowance section, the rear collar section, and the right allowance section by the yardage storage module and the collar allocation module, and the yardage is partitioned according to the calculated total length of the collar, which is convenient for direct extraction and use when replacing the collar later without secondary measurement, thus improving work efficiency. It realizes sewing of collars with different proportions at different speeds under different front and rear collar proportion conditions. The proportional distribution calculation module calculates the proportions of the four intervals, namely the front collar section, the left allowance section, the rear collar section, and the right allowance section, based on the initially input lengths of the front collar section and the rear collar section and the total length of the collar obtained by the collar calculation module. The collar is proportioned through the collar allocation module according to the proportions, and then the speed control module performs feeding operations on the collars in different proportion intervals at different differential speeds, and can directly input the length proportions of the front collar section, the left allowance section, the rear collar section, and the right allowance section according to the actual situation, so as to realize personalized production of the collar and meet the production needs of each area of the collar. And when in the left and right allowance sections, the speed control module controls the feeding speeds of the upper feed dog and the lower feed dog to be greater than the feeding speeds of the first roller and the second roller, so that the feed dog fits the fabric better, and more fabric is sewn into the collar allowance, thereby improving the aesthetics of the sewing.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0051] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise clearly defined and limited, terms such as "connected" and "fixed" should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A collar sewing control system, characterized in that: It includes a sewing mechanism, an upper feed dog, a lower feed dog, a differential motor, a differential transmission mechanism, and a first roller and a second roller for feeding, wherein the differential motor and the differential transmission mechanism are used to control the speed of the upper feed dog and the lower feed dog; It also includes: a neckline calculation module, which is used to calculate the total length of the neckline; the total length calculation formula of the neckline calculation module is as follows: S=X+2L Where S is the total length of the collar, X is the preset length, and L is the moving distance of the first roller; A neckline length storage module is used to read and store the total neckline length; A neckline allocation module, which allocates the neckline into four sections, namely, a front neckline section, a left accommodation section, a back neckline section, and a right accommodation section, in proportion, and outputs the allocation result; A proportion distribution calculation module calculates the proportion of the four sections of the front collar section, the left accommodation section, the rear collar section, and the right accommodation section according to the total neckline length obtained by the neckline calculation module and the front collar section length and the rear collar section length input initially, and transmits the proportion to the neckline distribution module; The speed control module sends a speed control command to the differential motor according to the output distribution result, and controls the upper feed dog and the lower feed dog to feed cloth at different differential speeds in four intervals through the differential motor.

2. A collar sewing control system according to claim 1, characterized in that: When the speed control module sends speed control commands in the front collar section and the rear collar section, the feeding speeds of the upper feed dog and the lower feed dog are equal to the feeding speeds of the first roller and the second roller; when the speed control command is sent in the left capacity section and the right capacity section, the feeding speeds of the upper feed dog and the lower feed dog are greater than the feeding speeds of the first roller and the second roller.

3. A collar sewing control system according to claim 1, characterized in that: It also includes a feeding stroke calculation module, which calculates the feeding strokes of the first roller and the second roller from the neckline seam starting point, and transmits the feeding stroke data to the speed control module.

4. A collar sewing control system according to claim 1, characterized in that: The moving distance L of the first roller is calculated based on the total length of the collar according to intervals, and the interval range of L is 5 mm to 15 mm.

5. A collar sewing control system according to claim 4, characterized in that: The utility model also comprises a code number storage module, wherein the code number storage module encodes the total length of the neckline in the same interval range into the same code number and stores the code number.

6. A collar sewing control system according to claim 1, characterized in that: The proportion distribution calculation module directly inputs the length proportion of the front collar segment, the left containing segment, the rear collar segment, and the right containing segment according to actual conditions.

7. A collar sewing control system according to claim 1, characterized in that: It also includes an alarm module, which presets a warning value and reads the total length of the neckline and the preset total length of the neckline. When the total length of the neckline exceeds the preset warning value or the total length of the neckline exceeds the preset total length of the neckline, the alarm module outputs an alarm signal.

8. A collar sewing control system according to claim 7, characterized in that: It also includes a photoelectric sensing module for detecting the starting and ending positions of each section of the neckline. When the photoelectric sensing module fails to detect the starting or ending position of each section of the neckline, an alarm signal is transmitted to the alarm module.

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