A fly front sewing apparatus and a control method thereof

Abstract

The application discloses a garment processing equipment, and aims to provide a door collar sewing equipment and a control method thereof, which can automatically perform sewing of a door collar with a zipper, has high sewing precision and efficiency, can sew different types of patterns according to requirements, can automatically perform processing quantity detection during sewing, and can automatically perform finished product collecting, technical scheme points are that a cloth placing table is used as a sewing table surface of cloth, a driving assembly is used for controlling a fixing device to move relative to a sewing device to complete sewing of a pattern on the cloth, so that the equipment as a whole can automatically realize cloth feeding, positioning, sewing, collecting and piece counting, a control module controls the cloth to move relative to the sewing device according to a preset input setting value, the overall sewing precision is high, and the requirement of large-scale production is met, and the application is suitable for the technical field of cloth sewing.

Description

Technical Field

[0001] This invention relates to a garment processing equipment, and more specifically, to a placket sewing equipment and its control method. Background Technology

[0002] During the sewing process of trousers, a fly is usually set, and a zipper is usually set at the fly. The zipper sewing process of the fly part is complicated, and due to the need for aesthetics, additional patterns need to be sewn on during the sewing process to form a beautiful stitch.

[0003] Currently, placket sewing is usually done manually, requiring operators to have extremely high sewing experience. It takes a long time to sew complex patterns, resulting in low sewing efficiency, high labor intensity for workers, low sewing precision, poor aesthetics of the sewn patterns, inability to guarantee consistent thread size and curvature after sewing, and inability to carry out large-scale production, thus failing to meet the requirements of standardized and large-scale production. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a placket sewing equipment and its control method that can automatically sew zippers at the placket, with high sewing accuracy and efficiency, can sew different types of patterns according to needs, and can automatically detect the processing quantity during sewing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a placket sewing device, comprising a fabric placement platform and a device mounting platform disposed on one side of the fabric placement platform. The device mounting platform is provided with a fixing device and a sewing device. The fixing device includes a placket fixing structure disposed on the device mounting platform and a fabric fixing structure disposed on the upper end of the placket fixing structure. The rear end of the fixing device is further provided with a driving component, which is configured to drive the fixing device to move relative to the sewing device. The fabric placement platform is provided with a feeding structure and a receiving structure at both ends.

[0006] The present invention is further configured such that: the receiving structure includes a receiving rack disposed at the bottom of the fabric placement platform, a receiving push rod disposed between the receiving rack and the fabric placement platform, and an air blowing pipe disposed on the side of the fabric placement platform near the receiving rack, wherein the air blowing pipe is configured to blow fabric that is not clamped by the fixing device into the receiving rack.

[0007] The present invention is further configured such that: the placket fixing structure includes a sliding plate, a blocking member disposed on the sliding plate, and a pressure plate disposed on the upper end of the blocking member; the pressure plate is provided with a plurality of pressure heads; the rear end of the pressure plate is also provided with a lifting cylinder; the lifting cylinder is provided with a fabric fixing structure; the fabric fixing structure has a crossbar disposed on the lifting cylinder and pressure bars disposed at both ends of the crossbar.

[0008] Preferably, the sliding plate includes a sewing processing section that matches the position of the sewing needle and an air extraction section disposed outside the sewing processing section. The air extraction section includes several openings, and a pump body is also provided at the bottom of the air extraction section. The pump body is configured to keep the sliding fabric flat and attached to the sliding plate.

[0009] The present invention is further configured such that the driving component includes a sliding groove disposed at the rear end of the fixing device, a driving belt disposed within the sliding groove, and a driving plate disposed at the lower end of the fixing device.

[0010] The present invention is further configured such that: the sewing device includes a sewing machine unit disposed on the equipment mounting table and a sewing needle disposed on the sewing machine unit, and the fabric placement table is provided with a needle hole, the position of the needle hole matching the position of the sewing needle.

[0011] The invention is further configured such that: the top of the sewing device is provided with a control module, the control module is electrically connected to the drive component, and the control module is configured to control the movement path of the drive component.

[0012] This application also provides a control method for a placket sewing device, including the following steps: S1, setting the control module based on the pattern to be sewn, so that the control module can control the drive component to move along the set pattern;

[0013] S2. Place the fabric to be sewn inside the feeding structure, with the sewn side of the fabric facing downwards.

[0014] S3. Grab the fabric from the feeding structure and place it into the fabric placement platform, while simultaneously flipping the fabric over.

[0015] S4. Adjust the position of the fabric so that: the fabric is folded over by the blocking parts on the sliding plate, and the placket fixing structure fixes the fabric for the first time;

[0016] S5. After the first fixing is completed, the fabric is inspected. If the pressure head of the placket fixing structure is located on the edge of the fabric to be sewn, it is determined that the pressure head is on the sewing path. The placket fixing structure is lifted and the fabric position is readjusted. Otherwise, the fabric is clamped normally, the lifting cylinder drives the fabric fixing component to descend, and the pressure rod in the fabric fixing component fixes the fabric for the second time.

[0017] S6. After the fabric is fixed, the control module controls the drive component to adjust the position of the fabric so that the starting position of sewing matches the edge position of the fabric to be sewn.

[0018] S7. Add a sewing pattern to the control module and start the sewing machine. The sewing machine sews the fabric, and at the same time, the control module controls the drive component to drive the fixing device to move based on the sewing pattern in the control module.

[0019] S8. After the sewing machine unit finishes sewing the fabric, cut the thread between the sewing needle and the fabric, and at the same time, lift the fixing device to release the clamping of the fabric.

[0020] S9. The take-up pusher pushes the fabric towards the take-up rack, and the air blower blows the fabric into the take-up rack for stacking. At the same time, the control module records the completed fabric value +1.

[0021] By adopting the above technical solution, the following benefits are achieved: 1. This application uses a fabric placement table as the sewing table for the fabric, and uses the feeding structure and the receiving structure as storage locations for the fabric to be processed / processed. The drive component controls the movement of the fixing device relative to the sewing device to complete the sewing of the pattern on the fabric. The sewn pattern can be achieved by changing the pattern added in the control module. It can complete the sewing of the placket in both left and right directions, so that the equipment can automatically realize the feeding, positioning, sewing, receiving and piece counting of the fabric. The control module controls the movement of the fabric relative to the sewing device according to the preset set value, replacing the manual movement of the fabric. The overall sewing accuracy is high, ensuring that the size, curvature and pattern of the sewing thread are consistent, improving the aesthetics of the pattern and the sewing standard. Moreover, the overall processing efficiency of the equipment is high, which meets the needs of large-scale production.

[0022] 2. Furthermore, this application utilizes a placket fixing structure and a fabric fixing structure. The placket fixing structure includes a sliding plate, a blocking member disposed on the sliding plate, and a pressure plate disposed on the upper end of the blocking member. Specifically, the sliding plate can slide on the fabric placement platform, meaning that after the fabric is fixed by the fixing structure, it can slide on the fabric placement platform via the sliding plate. The blocking member can abut against the edge of the fabric, completing the initial folding of the fabric while preventing the folded edge from resetting. After positioning, the placket fixing structure achieves initial fixing of the fabric and maintains the bending of the zipper portion. Subsequently, the fabric fixing structure further secures the entire fabric. Pressing the fabric prevents folds from occurring during subsequent fabric movement, ensuring pattern consistency, improving the pass rate, and preventing folds from affecting the sewing effect. Furthermore, after the initial clamping of the fabric by the placket fixing structure, the pressing position of the presser head is checked. Specifically, when sewing the zipper, the seam should be positioned relatively close to the edge of the fabric where the zipper is located. If the edge fabric is pressed down by the presser head, the seam position will shift during subsequent sewing, leading to misalignment and affecting the fabric's future performance. Checking the fixing position of the fixing device before processing effectively improves the fabric's pass rate.

[0023] 3. Simultaneously, this application can pre-add the required sewing pattern in the control module, and drive the fixed device to move relative to the sewing machine group along the set sewing pattern through the drive device. The sewing machine group has a fast sewing speed, good sewing accuracy and uniformity, which will make the sewing pattern match the preset pattern. Moreover, the sewing path can be adjusted according to the size of the fabric, which can realize the processing of different sizes, curvatures and pattern effects. It avoids the problems of low sewing accuracy and low efficiency when sewing additional patterns, resulting in monotonous patterns, which are common in manual processing. It improves the aesthetics of the sewing lines and can still have high efficiency when processing complex patterns. It is suitable for large-scale batch processing needs.

[0024] 4. Furthermore, during the sewing process, the stitching of the pattern is achieved by the control module controlling the movement of the drive device relative to the sewing machine unit based on the uploaded pattern. This results in a high degree of automation. No manual intervention is required for the movement of the fabric and the control of its path. This ensures overall automation while avoiding significant pattern variations caused by manual operation. After sewing is completed, the fixing device releases the fabric. At this point, the take-up pusher in the take-up structure pushes the fabric towards the take-up rack and begins to detach from the fabric placement table. Due to the push of the take-up pusher, part of the fabric is pushed away from the take-up rack. The rod moves to the position between the take-up pusher and the take-up rack, and is located at the front end of the air blowing pipe. The air blowing pipe sprays high-pressure gas, causing the fabric to quickly detach from the fabric placement table under the action of the gas, completing the take-up of the processed fabric. At the same time, the processing count can be performed after the fabric is taken up by the air blowing pipe, which can effectively monitor the processing progress. The processing count is set after the air blowing take-up to prevent missed detection and false detection. The detection of the processed quantity is carried out simultaneously during the processing, eliminating the need for manual counting of materials in the take-up rack, reducing the error rate of manual detection, improving production efficiency and the level of automation in the production process.

[0025] 5. Furthermore, when tightening the jeans' fly and zipper, it's crucial to ensure the fabric doesn't fold, and that the zipper clamping structure doesn't come into contact with the zipper's metal parts during clamping. After tightening the fabric using both the zipper and fabric clamping structures, the pressure on these structures is monitored, and the detected pressure values ​​are set as Ng and Nb, respectively. The normal pressure values ​​for both are set as N1 and N2, respectively. Specifically, when the fabric doesn't fold, the pressure value detected by the fabric clamping structure is the normal value; if the fabric clamping structure doesn't clamp the fabric, the current pressure value on the fabric clamping structure is... Nb > N2. Conversely, if the fabric is thick after folding, the fabric fixing structure is cushioned, and the pressure value Nb on the fabric fixing structure is < N2. At the same time, when the zipper fixing structure does not press the zipper and the placket tightly, the pressure value Ng on the current zipper fixing structure is > N1. Conversely, when the zipper fixing structure presses down on the metal part of the zipper, the pressure value Ng on the zipper fixing structure is < N1, and Ng has a fluctuating value. By detecting the pressure values ​​of the zipper fixing structure and the fabric fixing structure, the fixing status can be effectively detected while pressing the fabric placket and the zipper, preventing abnormal stitching patterns or damage to the machine caused by the sewing needle colliding with the metal part of the zipper. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a specific structure of an embodiment of a placket sewing device and its control method according to the present invention;

[0027] Figure 2This is a schematic diagram of the specific structure of the fixing device in an embodiment of a placket sewing device and its control method according to the present invention.

[0028] Figure 3 This is a flowchart illustrating the control method of an embodiment of a placket sewing device and its control method according to the present invention.

[0029] The attached diagram includes the following labels: 1. Fabric placement platform; 2. Equipment mounting platform; 3. Fixing device; 31. Placket fixing structure; 311. Sliding plate; 312. Blocking component; 313. Pressure plate; 314. Pressure head; 315. Lifting cylinder; 32. Fabric fixing structure; 321. Crossbar; 322. Pressure bar; 4. Sewing device; 41. Sewing machine unit; 42. Sewing needle; 43. Needle hole; 5. Drive assembly; 51. Sliding groove; 52. Drive belt; 53. Drive plate; 6. Feeding structure; 7. Taking structure; 71. Taking rack; 72. Taking push rod; 73. Air pipe; 8. Control module. Detailed Implementation

[0030] Reference Figures 1 to 3 The embodiments of the placket sewing equipment and its control method of the present invention will be further described.

[0031] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0033] A placket sewing device includes a fabric placement platform 1 and a device mounting platform 2 disposed on one side of the fabric placement platform 1. The device mounting platform 2 is provided with a fixing device 3 and a sewing device 4. The fixing device 3 includes a placket fixing structure 31 disposed on the device mounting platform 2 and a fabric fixing structure 32 disposed on the upper end of the placket fixing structure 31. The rear end of the fixing device 3 is also provided with a driving component 5, which is configured to drive the fixing device 3 to move relative to the sewing device 4. The fabric placement platform 1 is provided with a feeding structure 6 and a receiving structure 7 at both ends.

[0034] The material receiving structure 7 includes a material receiving rack 71 located at the bottom of the fabric placement platform 1, a material receiving push rod 72 located between the material receiving rack 71 and the fabric placement platform 1, and an air blowing pipe 73 located on the side of the fabric placement platform 1 near the material receiving rack 71. The air blowing pipe 73 is configured to blow fabric that is not clamped by the fixing device 3 into the material receiving rack 71.

[0035] The placket fixing structure 31 includes a sliding plate 311, a blocking member 312 disposed on the sliding plate 311, and a pressure plate 313 disposed on the upper end of the blocking member 312. The pressure plate 313 is provided with a plurality of pressure heads 314. The rear end of the pressure plate 313 is also provided with a lifting cylinder 315. The lifting cylinder 315 is provided with a fabric fixing structure 32. The fabric fixing structure 32 has a crossbar 321 disposed on the lifting cylinder 315 and pressure rods 322 disposed at both ends of the crossbar 321.

[0036] Preferably, the sliding plate includes a sewing processing section that matches the position of the sewing needle and an air extraction section disposed outside the sewing processing section. The air extraction section includes several openings, and a pump body is also provided at the bottom of the air extraction section. The pump body is configured to keep the sliding fabric flat and attached to the sliding plate.

[0037] The drive assembly 5 includes a sliding groove 51 disposed at the rear end of the fixing device 3, a drive belt 52 disposed in the sliding groove 51, and a drive plate 53 disposed at the lower end of the fixing device 3.

[0038] The sewing device 4 includes a sewing machine unit 41 mounted on the equipment mounting platform 2 and a sewing needle 42 mounted on the sewing machine unit 41. The fabric placement platform 1 is provided with a needle hole 43, and the position of the needle hole 43 matches the position of the sewing needle 42.

[0039] The sewing device 4 is also provided with a control module 8 on its top. The control module 8 is electrically connected to the drive component 5 and is configured to control the movement path of the drive component 5.

[0040] This application also provides a control method for a placket sewing device, including the following steps: S1, setting the control module based on the pattern to be sewn, so that the control module can control the drive component to move along the set pattern;

[0041] S2. Place the fabric to be sewn inside the feeding structure, with the sewn side of the fabric facing downwards.

[0042] S3. Grab the fabric from the feeding structure and place it into the fabric placement platform, while simultaneously flipping the fabric over.

[0043] S4. Adjust the position of the fabric so that: the fabric is folded over by the blocking parts on the sliding plate, and the placket fixing structure fixes the fabric for the first time;

[0044] S5. After the first fixing is completed, the fabric is inspected. If the pressure head of the placket fixing structure is located on the edge of the fabric to be sewn, it is determined that the pressure head is on the sewing path. The placket fixing structure is lifted and the fabric position is readjusted. Otherwise, the fabric is clamped normally, the lifting cylinder drives the fabric fixing component to descend, and the pressure rod in the fabric fixing component fixes the fabric for the second time.

[0045] S6. After the fabric is fixed, the control module controls the drive component to adjust the position of the fabric so that the starting position of sewing matches the edge position of the fabric to be sewn.

[0046] S7. Add a sewing pattern to the control module and start the sewing machine. The sewing machine sews the fabric, and at the same time, the control module controls the drive component to drive the fixing device to move based on the sewing pattern in the control module.

[0047] S8. After the sewing machine unit finishes sewing the fabric, cut the thread between the sewing needle and the fabric, and at the same time, lift the fixing device to release the clamping of the fabric.

[0048] S9. The take-up pusher pushes the fabric towards the take-up rack, and the air blower blows the fabric into the take-up rack for stacking. At the same time, the control module records the completed fabric value +1.

[0049] This application uses a fabric placement platform 1 as the sewing table for the fabric, and uses the feeding structure 6 and the receiving structure 7 as storage positions for the fabric to be processed / processed. The drive component 5 controls the movement of the fixing device 3 relative to the sewing device 4 to complete the sewing of the pattern on the fabric. The sewn pattern can be achieved by changing the pattern added in the control module 8. It can complete the sewing of the placket in both left and right directions, so that the whole equipment can automatically realize the feeding, positioning, sewing, receiving and piece counting of the fabric. The control module 8 controls the movement of the fabric relative to the sewing device 4 according to the preset set value, replacing the manual movement of the fabric. The overall sewing accuracy is high, ensuring that the size, curvature and pattern of the sewing thread are consistent, improving the aesthetics of the pattern and the standard of sewing. The overall processing efficiency of the equipment is high, which meets the needs of large-scale production.

[0050] Furthermore, this application utilizes a placket fixing structure 31 and a fabric fixing structure 32. The placket fixing structure 31 includes a sliding plate 311, a blocking member 312 disposed on the sliding plate 311, and a pressure plate 313 disposed on the upper end of the blocking member 312. Specifically, the sliding plate 311 can slide on the fabric placement platform 1, that is, after the fabric is fixed by the fixing structure, it can slide on the fabric placement platform 1 via the sliding plate 311. The blocking member 312 can abut against the edge of the fabric, completing the initial folding of the fabric while preventing the folded edge from returning to its original position. After positioning, the placket fixing structure 31 achieves the initial fixing of the fabric and maintains the bending of the zipper portion, subsequently allowing the fabric to be fixed. The fixing structure 32 presses the entire fabric together, preventing folds from affecting the sewing effect during subsequent fabric movement, ensuring pattern consistency, and improving the pass rate. Furthermore, after the placket fixing structure 31 clamps the fabric for the first time, the pressing position of the pressure head 314 is checked. Specifically, when sewing the zipper, the seam needs to be positioned relatively close to the edge of the fabric where the zipper is located. If the edge of the fabric is pressed down by the pressure head 314, the seam position will shift during subsequent sewing, leading to misalignment and affecting the fabric's subsequent performance. Checking the fixing position of the fixing device 3 before processing effectively improves the fabric's pass rate.

[0051] Meanwhile, this application can add the required sewing pattern in the control module 8 in advance, and drive the fixing device 3 to move relative to the sewing machine group 41 along the set sewing pattern through the drive device. The sewing machine group 41 has a fast sewing speed, good sewing accuracy and uniformity, which makes the sewing pattern match the preset pattern. The sewing path can be adjusted according to the size of the fabric, which can realize the processing of different sizes, curvatures and pattern effects. It avoids the problems of low sewing accuracy and low efficiency when sewing additional patterns, resulting in monotonous patterns, which are common in manual processing. It improves the aesthetics of the sewing lines and can still have high efficiency when processing complex patterns. It is suitable for large-scale batch processing needs.

[0052] Furthermore, in this application, during the sewing process, the stitching of the pattern is achieved by the control module 8 controlling the movement of the drive device relative to the sewing machine unit 41 based on the uploaded pattern. The overall degree of automation is high, and the movement of the fabric and the control of the movement path do not require manual intervention. This ensures the automation of the entire process while avoiding excessive pattern differences caused by manual operation. Moreover, after the sewing process is completed, the fixing device 3 releases the fixing of the fabric. At this time, the take-up push rod 72 in the take-up structure 7 pushes the fabric towards the take-up rack 71 and begins to detach from the fabric placement table 1. Due to the push of the take-up push rod 72, part of the fabric passes through the take-up push rod 72. The material is moved between the receiving push rod 72 and the receiving rack 71, and positioned at the front end of the air blowing pipe 73. The air blowing pipe 73 sprays high-pressure gas, causing the fabric to quickly detach from the fabric placement table 1 under the action of the gas, thus completing the receiving of the processed fabric. At the same time, the processing count can be performed after the fabric is blown by the air blowing pipe 73 to complete the receiving, which can effectively monitor the processing progress. The processing count is set after the air blowing receiving to prevent missed detection and false detection. The detection of the processed quantity is carried out simultaneously during the processing, eliminating the need for additional manual counting of materials in the receiving rack 71, reducing the error rate of manual detection, and improving production efficiency and the level of automation in the production process.

[0053] Furthermore, when tightening the jeans' fly and zipper, it's crucial to ensure the fabric doesn't fold, and that the zipper clamping structure doesn't interfere with the zipper's metal parts during clamping. After tightening the fabric using both the zipper and fabric clamping structures, the pressure on these structures is monitored, and the detected pressure values ​​are set as Ng and Nb, respectively. The normal pressure values ​​for both are set as N1 and N2, respectively. Specifically, when the fabric doesn't fold, the pressure value detected by the fabric clamping structure is the normal value; if the fabric clamping structure doesn't clamp the fabric, the current pressure value Ng on the fabric clamping structure is the normal value. b > N2. Conversely, if the fabric is thick after folding, the fabric fixing structure is buffered, and the pressure value Nb on the fabric fixing structure is < N2. At the same time, when the zipper fixing structure does not press the zipper and the placket tightly, the pressure value Ng on the current zipper fixing structure is > N1. Conversely, when the zipper fixing structure presses down on the metal part of the zipper, the pressure value Ng on the zipper fixing structure is < N1, and Ng has a fluctuating value. By detecting the pressure values ​​of the zipper fixing structure and the fabric fixing structure, the fixing status can be effectively detected while pressing the fabric placket and the zipper, preventing abnormal stitching patterns or damage to the machine caused by the sewing needle colliding with the metal part of the zipper.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A fly sewing apparatus comprising a cloth placing table (1) and an apparatus mounting table (2) provided at one side of the cloth placing table (1), characterized in that, The equipment mounting table (2) is provided with a fixing device (3) and a sewing device (4), the fixing device (3) comprises a fly fixed structure (31) arranged on the equipment mounting table (2) and a cloth fixed structure (32) arranged on the upper end of the fly fixed structure (31), and the rear end of the fixing device (3) is further provided with a driving assembly (5), the driving assembly (5) is configured to drive the fixing device (3) to move relative to the sewing device (4), and the both ends of the cloth placing table (1) are respectively provided with a feeding structure (6) and a receiving structure (7). The fly fixed structure (31) comprises a sliding plate (311), a blocking piece (312) arranged on the sliding plate (311), and a pressing plate (313) arranged on the upper end of the blocking piece (312), a plurality of pressing heads (314) are arranged on the pressing plate (313), and a lifting cylinder (315) is further arranged at the rear end of the pressing plate (313), the cloth fixed structure (32) is arranged on the lifting cylinder (315), and the cloth fixed structure (32) has a cross rod (321) arranged on the lifting cylinder (315) and a pressing rod (322) arranged at the both ends of the cross rod (321). The sliding plate comprises a sewing processing part matched with the position of the sewing needle and an air extraction part arranged outside the sewing processing part, the air extraction part comprises a plurality of openings, and a pump body is further arranged at the bottom of the air extraction part, and the pump body is configured to keep the sliding cloth flat and attached to the sliding plate. After the zip fastener fixed structure and the cloth fixed structure are used to compress the cloth, the pressure borne by the zip fastener fixed structure and the cloth fixed structure is detected, and the detected pressure values are respectively set as Ng and Nb, and the normal pressure values of the two are respectively set as N1 and N2, specifically, when the cloth is not folded, the pressure value detected by the cloth fixed structure is the normal value, if the cloth fixed structure does not clamp the cloth, the current pressure value borne by the cloth fixed structure is Nb>N2, otherwise, if the cloth is folded and the thickness is large, the cloth fixed structure is buffered, the pressure value borne by the cloth fixed structure is NbN2, at the same time, when the zip fastener fixed structure does not compress the zip fastener and the fly, the current pressure value borne by the zip fastener fixed structure is Ng>N1, otherwise, when the zip fastener fixed structure compresses the metal part of the zip fastener, the pressure value borne by the zip fastener fixed structure is NgN1, and Ng has up and down floating values.

2. The fly sewing apparatus according to claim 1, wherein The receiving structure (7) comprises a receiving rack (71) arranged at the bottom of the cloth placing table (1), a receiving push rod (72) arranged between the receiving rack (71) and the cloth placing table (1), and a blowing pipe (73) arranged on the side of the cloth placing table (1) close to the receiving rack (71), and the blowing pipe (73) is configured to blow the cloth not clamped by the fixing device (3) into the receiving rack (71).

3. The fly sewing apparatus according to claim 1, wherein The driving assembly (5) comprises a sliding groove (51) arranged at the rear end of the fixing device (3), a driving belt (52) arranged in the sliding groove (51), and a driving plate (53) arranged at the lower end of the fixing device (3).

4. The fly sewing apparatus according to claim 1, wherein The sewing device (4) comprises a sewing machine group (41) arranged on the equipment mounting table (2) and a sewing needle (42) arranged on the sewing machine group (41), and the cloth placing table (1) is provided with a needle penetrating hole (43) which is matched with the position of the sewing needle (42).

5. The fly sewing apparatus according to claim 1, wherein The top of the sewing device (4) is further provided with a control module (8) which is electrically connected with the driving assembly (5), and the control module (8) is configured to control the movement path of the driving assembly (5).

6. A control method for the fly sewing apparatus according to any one of claims 1 to 5, characterized by, The method comprises the following steps: S1, based on the pattern to be sewn, the control module is set so that the control module can control the driving assembly to move along the set pattern; S2, the cloth to be sewn is placed in the feeding structure, and the cloth to be sewn is arranged downward; S3, the cloth in the feeding structure is placed in the cloth placing table, and the cloth is turned over synchronously; S4, the position of the cloth is adjusted, so that the cloth is folded by the blocking piece on the sliding plate, and the door flap fixing structure fixes the cloth for the first time; S5, after the first fixing is completed, the cloth is detected, if the pressure head of the door flap fixing structure is located on the edge of the cloth to be sewn, it is judged that the pressure head is located on the sewing route, the door flap fixing structure is lifted and the position of the cloth is adjusted, otherwise, the cloth clamping is normal, the lifting cylinder drives the cloth fixing assembly to descend, and the pressure rod in the cloth fixing assembly fixes the cloth for the second time; S6, after the cloth is fixed, the control module controls the driving assembly to adjust the position of the cloth, so that the starting position of sewing is matched with the edge position of the cloth to be sewn; S7, the sewing pattern is added in the control module, and the sewing machine group is started, the sewing machine group sews the cloth, and the control module controls the driving assembly to drive the fixing device based on the sewing pattern in the control module; S8, after the sewing machine group sews the cloth, the sewing thread between the sewing needle and the cloth is cut off, and the fixing device is lifted to cancel the clamping of the cloth; S9, the cloth is pushed to the direction close to the collecting frame by the collecting push rod, the cloth is blown into the collecting frame by the blowing pipe, and the control module records the processing completed cloth value +1.

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