Neckline sewing control system

Abstract

The invention discloses a neckline sewing control system, and particularly relates to the technical field of neckline sewing, the neckline sewing control system comprises a sewing mechanism, an upper feed dog, a lower feed dog, a differential motor, a differential transmission mechanism, a first roller and a second roller, the first roller and the second roller are used for feeding, and the differential motor and the differential transmission mechanism are used for controlling the speed of the upper feed dog and the speed of the lower feed dog; the neckline calculation module is used for calculating the total length of the neckline, the neckline length storage module is used for reading and storing the total length of the neckline, and the neckline distribution module is used for distributing the neckline into a front neckline section, a left accommodating section, a rear neckline section and a right accommodating section in proportion and outputting a distribution result. The speed control module is used for sending a speed control command to the differential motor according to the output distribution result and controlling the upper feed dog and the lower feed dog to feed the cloth in four intervals at different differential speeds through the differential motor; the neckline is arranged in a partitioned mode, cloth feeding at different differential speeds is carried out according to different partitions, and therefore personalized manufacturing of the neckline is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of collar sewing, and in particular to a collar sewing control system. Background Art

[0002] With the development of e-commerce, people's purchasing power for clothing has greatly increased, which has put a great test on the production rate and aesthetics of factory clothing. It is necessary to produce a large number of beautiful clothing in a short time. In clothing manufacturing, the sewing of collars is particularly important. In the process of sewing collars, the collars and ribs often lead to sewing errors due to the corresponding deviation between the two; when changing to other sizes of collars, they need to be re-fixed, resulting in low efficiency; the collar sewing process can only be sewn at a uniform speed, or it is necessary to constantly change other speeds for sewing, resulting in the inability to make the collar sewing personalized and the sewing time is too long; it is impossible to improve the sewing aesthetics of the collar capacity, etc. These are all problems encountered in the current collar sewing.

[0003] Patent No. ZL202221989553.0 discloses a spacing adjustment mechanism for the feed teeth on an overlock sewing machine, including an adjustment shaft installed in an overlock sewing machine base, one end of the adjustment shaft is connected to a fork-shaped piece, and the other end is connected to 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 to a handle; the handle can be slidably installed in the handle slide groove of the handle locking plate. A spacing adjustment mechanism for the feed teeth on an overlock sewing machine installs a handle on the top of the overlock sewing machine base, and controls the front and rear feeding distance of the feed tooth frame 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. The spacing of the upper feed teeth can be adjusted through this adjustment mechanism to adapt to the sewing of different clothes, but it is not possible to intelligently sew different collars at different speeds to achieve flat front and back clothes. Summary of the invention

[0004] The present invention aims at the above-mentioned deficiencies in the prior art, and the technical problem to be solved by the present invention is to propose a neckline sewing control system for solving the problems in the prior art of difficulty in neckline length distribution, same sewing speed and uneven neckline capacity.

[0005] The technical solution adopted by the present invention to solve the technical problem is a collar sewing control system, comprising 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, used to calculate the total length of the neckline; 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; 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.

[0006] Furthermore, 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.

[0007] Furthermore, 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.

[0008] Furthermore, the total neckline length calculation formula of the neckline calculation module is as follows: In the formula, is the total length of the neckline, is the preset length, is the moving distance of the first roller.

[0009] Furthermore, the moving distance L of the first roller is calculated according to the interval of the total length of the collar, and the interval range of L is 5 mm to 15 mm.

[0010] Furthermore, it also includes a code number storage module, which encodes the total length of the neckline in the same interval range into the same code number and stores the code number.

[0011] Furthermore, it also includes a proportion distribution calculation module, which calculates the proportion of the four sections of the front collar section, the left containing section, the back collar section, and the right containing section according to the total neckline length obtained by the neckline calculation module and the front collar piece length and the back collar piece length initially input, and transmits the proportion to the neckline distribution module.

[0012] Furthermore, the proportion distribution calculation module directly inputs the length ratio of the front collar segment, the left containing segment, the rear collar segment, and the right containing segment according to actual conditions.

[0013] Furthermore, 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.

[0014] Furthermore, 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.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: (1) A collar sewing control system of the present invention directly controls the upper feed dog and the lower feed dog through a differential motor and a differential transmission mechanism, thereby avoiding the involvement of too many components in the operation and improving the accuracy and efficiency of sewing; (2) The collar distribution module is used to calculate the ratio of the front collar section length and the back collar section length initially inputted, as well as the ratio of the four sections of the front collar section, the left containing section, the back collar section, and the right containing section obtained by the collar calculation module. The collar is then proportioned by the collar distribution module according to the ratio, and then the speed control module is used to perform cloth feeding operations at different differential speeds on the collars in different proportioning sections, thereby realizing personalized production of the collar and meeting the production needs of each area of ​​the collar; (3) When the speed control module is in the left and right capacity sections, the feeding speed of the upper feed dog and the lower feed dog is controlled to be greater than the feeding speed of the first roller and the second roller, so that the feed dog fits the fabric more closely and more fabric is sewn into the collar capacity, thereby improving the aesthetics of sewing; (4) The neckline whose total length has been calculated by overcutting is divided into sections through the code storage module. When the same section of neckline is used later, the code can be directly obtained, thereby improving the efficiency of sewing the neckline after replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a collar sewing control system; Figure 2 for Figure 1 Schematic diagram of the structure of the upper and lower feed dogs; Figure 3 for Figure 1 A schematic diagram of the structure of the middle differential motor and the differential transmission mechanism; Figure 4 The present invention is a flow chart of a collar sewing control system. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figures 1 to 4As shown, a collar sewing control system of the present invention comprises 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 for controlling the speed of the upper feed dog 2 and the lower feed dog 3; The upper feed dog 2 and the lower feed dog 3 are set up in an upper and lower relative position, and 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 the 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 feed the cloth at the needle. 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 clothes are covered with the first roller 6 and the second roller 7, the first roller 6 and the second roller 7 are used to stretch the clothes and feed them. In this embodiment, the differential transmission mechanism 5 is a gear transmission, but in the specific implementation operation, it can also be replaced by a screw rod, a rocker rod, etc. for transmission adjustment. When the sewing mechanism 1 performs sewing operation on the collar, the collar passes through the first roller 6, 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 reciprocate up and down 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 clothes to rotate. The collar section, left accommodating section, right accommodating section, and back collar section of the collar pass through the upper feed dog 2 and the lower feed dog 3 in sequence, and are sewn by the needle of the sewing mechanism 1.

[0019] Furthermore, the system also includes: a neckline calculation module, for calculating the total length of the neckline; A neckline length storage module is used to read and store the total neckline length; The neckline allocation module allocates the neckline into four sections, namely, the front neckline section, the left accommodation section, the back neckline section, and the right accommodation section, and outputs the allocation result; The speed control module sends a speed control command to the differential motor 4 according to the output distribution result, and controls the upper feed dog 2 and the lower feed dog 3 to feed cloth at different differential speeds in four intervals through the differential motor 4.

[0020] When the sewing mechanism performs sewing operations, the collar is sleeved on the first roller 6 and the second roller 7, and the collar calculation module calculates the total length of the collar of the clothes, and transmits the calculated total length data to the collar length storage module for storage, so as to facilitate the subsequent reading of the total length of the collar. Due to the different elasticity of collars made of different materials, the corresponding total length of the collar can be set according to the collars of different materials. When the collar is sewn for the first time, the operator sequentially inputs the length of the front collar section and the length of the back collar section of the collar, and calculates the proportion of the four sections of the front collar section, the left accommodation section, the back collar section, and the right accommodation section of the collar according to the input collar section length and the actual total length of the collar calculated by the collar calculation module, and transmits the calculated proportion data to the collar allocation module. According to the proportion data and the total length of the collar, the collar is allocated to the four length sections of the front collar section, the left accommodation section, the back collar section, and the right accommodation section of the corresponding proportion, and the allocation result is output to the speed control module.

[0021] 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, driving 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 feeding the material, and the sewing mechanism 1 sews the collar. 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 accommodating section, the front collar section, the right accommodating section, and the back collar section.

[0022] When sewing is performed at the left accommodating section, the speed control module controls the differential motor 4 to control the differential transmission mechanism 5 at a cloth feeding speed greater than the feeding speed to drive the upper cloth feeding dog 2 to cooperate with the lower cloth feeding dog 3 to feed cloth, and the sewing mechanism 1 performs sewing operations on the left accommodating section; when sewing is performed at the front collar section, the speed control module controls the differential motor 4 to control the differential transmission mechanism 5 at a cloth feeding speed equal to the feeding speed to drive the upper cloth feeding dog 2 to cooperate with the lower cloth feeding dog 3 to feed cloth, and the sewing mechanism 1 performs sewing operations on the front collar section; when sewing is performed at the right accommodating section, the speed control module controls the differential motor 4 to control the differential transmission mechanism 5 at a cloth feeding speed equal to the feeding speed to drive the upper cloth feeding dog 2 to cooperate with the lower cloth feeding dog 3 to feed cloth, and the sewing mechanism 1 performs sewing operations on the front collar section; When sewing is performed at the right accommodating section, the speed control module controls the differential motor 4 to control the differential transmission mechanism 5 to drive the upper feed dog 2 and the lower feed dog 3 to cooperate in feeding cloth at a cloth feeding speed greater than the feeding speed, and the sewing mechanism 1 performs sewing operations on the right accommodating section; when sewing is performed at the back collar section, the speed control module controls the differential motor 4 to control the differential transmission mechanism 5 to drive the upper feed dog 2 and the lower feed dog 3 to feed cloth at a cloth feeding speed equal to the feeding speed, and the sewing mechanism 1 performs sewing operations on the back collar section, thereby completing the sewing operation of 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 the left accommodating section and the right accommodating section are sewing, the upper feed dog 2 can feed more cloth into the sewing mechanism 1, and the sewing mechanism 1 can sew more cloth in the two accommodating sections, thereby tightening the cloth in the two accommodating sections and improving the aesthetics of sewing.

[0023] Furthermore, the system also includes a feeding stroke calculation module, which calculates the feeding stroke of the first roller 6 and the second roller 7 from the neckline sewing point, and transmits the feeding stroke data to the speed control module. The corresponding sewing interval is determined according to the feeding stroke of the first roller 6 and the second roller 7, and the data is sent to the speed control module, which controls the differential motor 4 to drive the upper feed dog 2 to feed the cloth in the interval.

[0024] Further, when the neckline is fully stretched on the first roller 6 and the second roller 7, the neckline calculation module calculates the total length of the neckline, and the calculation formula of the total length of the neckline is as follows: In the formula, is the total length of the neckline, is the preset length, The distance of movement of the first roller. Different preset length processing is performed according to different sewing machines. Since the neckline is set between the first roller 6 and the second roller 7, the distance moved by the first roller 6 is half of the stretched length of the neckline. The total length of the neckline is the sum of the preset length of the current sewing machine and twice the moving distance of the first roller 6.

[0025] In order to avoid differences in the sewing effect of the neckline due to measurement errors, the first roller 6 moves a distance L to calculate the total length of the neckline according to intervals. The interval range of L is 5mm to 15mm. In this embodiment, the value of L is calculated according to an interval of 10mm. For example, when L is in the interval of 0 to 10mm, the total length of the neckline is calculated according to the average value of 5mm. When L is in the interval of 11 to 20mm, the total length of the neckline is calculated according to the average value of 15mm, and so on. According to the total length of the neckline calculated by the formula, different total lengths of clothing materials correspond to different neckline code segments, thereby completing the distinction of neckline code segments. The value of L can also be calculated according to an interval range of 5mm, 8mm or 15mm.

[0026] Furthermore, it also includes a code number storage module, which encodes the total length of the neckline in the same interval into the same code and stores the code number. After sewing necklines of different codes, the code number storage module encodes the total length of the neckline in the same interval into the same code according to the total length of the neckline and the distribution ratio. When sewing the neckline of the same code number again, it is only necessary to confirm the corresponding code number and select it in the system, without the need for secondary neckline length measurement and distribution, thereby improving the sewing work efficiency.

[0027] Furthermore, when the operator is actually sewing, since there may be necklines in the same batch that require sewing operations with specific requirements, the operator can directly input the length ratio of the front collar section, the left accommodation section, the back collar section, and the right accommodation section in the proportion distribution calculation module according to the actual situation. The ratio of the four sections of the front collar section, the left accommodation section, the back collar section, and the right accommodation section is calculated based on the length of the front collar piece and the length of the back collar piece input for the first time and the total length of the neckline obtained by the neckline calculation module and sent to the neckline distribution module. The neckline distribution module distributes the neckline into four sections of the front collar section, the left accommodation section, the back collar section, and the right accommodation section in proportion, so that the speed control module performs corresponding sewing operations on the neckline according to the distribution results. In this way, the uniqueness of the neckline sewing can be increased, and sewing operations with unique proportional lengths can also be performed in the same batch of neckline sewing.

[0028] Furthermore, the system also includes an alarm module, and the alarm module presets a warning value to prevent the neckline from being over-stretched or under-stretched. The alarm module reads the actual total neckline length calculated by the neckline calculation module 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, it indicates that the neckline is over-stretched, and the alarm module outputs an alarm signal to give an alarm prompt, prompting the staff to take emergency measures.

[0029] Furthermore, the system also includes a photoelectric sensing module for detecting the starting and ending positions of the four sections of the collar front collar section, the left containing section, the back collar section, and the right containing section. When the photoelectric sensing module detects the starting position of a certain section, it transmits a control signal to the speed control module, and controls the differential motor 4 to feed the cloth at the differential speed of this section through the speed control module. When the photoelectric sensing module detects the ending position of this section, it transmits a control signal to the speed control module, and controls the differential motor 4 to stop feeding the cloth through the speed control module, and determines the next section according to the detected starting position, 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 section. When the photoelectric sensing module does not detect the starting or ending position of each section of the collar, the collar may fall off or the length of the section allocation does not match the actual length. The photoelectric sensing module transmits an alarm signal to the alarm module to notify the operator to check, thereby improving the accuracy of sewing the collar.

[0030] In summary, a neckline sewing control system of the present invention comprises 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; further comprising a neckline calculation module for calculating the total length of the neckline, a neckline length storage module for reading and storing the total length of the neckline, a proportion distribution calculation module for calculating the proportions of four sections of the front neck segment, the left accommodating section, the rear neck segment, and the right accommodating section according to the front neck piece length and the rear neck piece length input initially and the total length of the neckline obtained by the neckline calculation module, a neckline distribution module for reading proportion data of the proportion distribution calculation module, distributing the neckline into four sections of the front neck segment, the left accommodating section, the rear neck segment, and the right accommodating section of corresponding proportions according to the proportion data, and outputting the distribution result, and a speed control module for sending a speed control command to the differential motor according to the output distribution result, and controlling the upper feed dog and the lower feed dog to feed cloth at different differential speeds in the four sections through the differential motor. First, ensure that the neckline stretch required for sewing is within the set range, which helps to improve the quality and consistency of the product. A friendly user interface is provided for this purpose, so that operators can easily set various parameters, such as stretch length, front collar and back collar length and ratio, collar width, differential and roller speed, and neckline allocation diagram. Through automated control and parameter setting, the error caused by human operation is reduced, and the qualified rate of the product is improved. When replacing the neckline, the total length of the neckline is allocated to the front collar segment, left capacity segment, back collar segment, and right capacity segment through the code storage module and the neckline allocation module, and the code is divided according to the calculated total length of the neckline, so that it can be directly extracted and used when the neckline is replaced later, without secondary measurement, which improves work efficiency and realizes different speeds for each collar ratio under different front and back collar ratios. The sewing of the degree of sewing is carried out, the proportion of the four sections of the front collar section, the left accommodating section, the back collar section and the right accommodating section is calculated by the proportion distribution calculation module for the front collar section length and the back collar section length input initially and the total neckline length obtained by the neckline calculation module, the neckline distribution module is used to perform the proportioning according to the proportion, and then the speed control module is used to perform cloth feeding operations at different differential speeds on the necklines of different proportioning sections, and the length proportions of the front collar section, the left accommodating section, the back collar section and the right accommodating section can be directly input according to actual conditions, thereby realizing personalized production of the neckline and meeting the production needs of various areas of the neckline, and 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 in the left and right accommodating sections, so that the feed dogs are more closely fitted to the cloth, and more cloth is sewn into the neckline accommodating section, thereby improving the aesthetics of sewing.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection 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, used to calculate the total length of the neckline; 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; 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 total neckline length calculation formula of the neckline calculation module is as follows: In the formula, is the total length of the neckline, is the preset length, is the moving distance of the first roller.

5. A collar sewing control system according to claim 4, 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.

6. A collar sewing control system according to claim 5, 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.

7. A collar sewing control system according to claim 4, characterized in that: It also includes a proportion distribution calculation module, which calculates the proportion of the four sections of the front collar section, the left containing section, the back collar section, and the right containing section according to the total neckline length obtained by the neckline calculation module and the front collar piece length and the back collar piece length input initially, and transmits the proportion to the neckline distribution module.

8. A collar sewing control system according to claim 7, 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.

9. A collar sewing control system according to claim 4, 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.

10. A collar sewing control system according to claim 9, 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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