A garment seam process tracing positioning tool

Abstract

The application relates to the technical field of garment production, in particular to a garment splicing process line positioning tool, which comprises a line positioning frame and further comprises a pressure adjusting shell, the pressure adjusting shell is fixedly installed on the line positioning frame, a pressure adjusting system is arranged in the pressure adjusting shell, a line drawing device is detachably installed on the pressure adjusting system, a detection control module is fixedly installed on the pressure adjusting shell and is in signal connection with the pressure adjusting system, and a supporting leg is arranged on the line positioning frame, a pressure detection wheel is rotatably installed at the bottom end of the supporting leg, and a pressure detection processing module is further fixedly installed on the supporting leg; the garment splicing process line positioning tool can avoid the problems of too heavy or too light line traces and can improve the quality and effect of line drawing.

Description

Technical Field

[0001] This invention relates to the field of garment production technology, specifically to a garment sewing process marking and positioning fixture. Background Technology

[0002] In garment manufacturing, the tracing and positioning process in seam stitching is a crucial step in ensuring the accuracy of subsequent sewing. Its quality directly affects the regularity of the garment's pattern, its aesthetic appearance, and the overall production quality. In actual production, specialized fixtures are needed to trace the seams of garment pieces, providing clear and accurate guidance for the sewing operation. Although tracing and positioning fixtures for this process already exist in the industry, they often struggle to achieve precise control of tracing pressure when dealing with pieces of varying thicknesses or complex seam areas (such as areas with abrupt or gradual thickness changes). This results in inconsistent tracing effects, which in turn affect subsequent processing efficiency and the quality of the finished product.

[0003] Existing garment seam marking and positioning fixtures cannot flexibly adjust the marking pressure according to the thickness variations in the seam area of ​​the cut pieces. When there is a constant thickness difference in the cut pieces, insufficient pressure can lead to blurred markings and affect sewing accuracy, while excessive pressure can damage the cut pieces and wear out the marking equipment. For areas where the thickness of the cut pieces varies gradually, existing fixtures lack an effective pressure adjustment mechanism, making it difficult to adapt to continuous thickness changes and resulting in uneven markings and inconvenience in use. Therefore, in view of the above situation, there is an urgent need to develop a garment seam marking and positioning fixture to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide a tooling for marking and positioning seams in garment stitching processes, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A garment seam stitching and positioning fixture includes a stitching and positioning frame, and further includes:

[0007] A pressure regulating housing is fixedly installed on the tracing positioning frame, and a pressure regulating system is provided inside the pressure regulating housing. A tracing device is detachably installed on the pressure regulating system.

[0008] A detection and control module is fixedly installed on the pressure regulating housing and is signal-connected to the pressure regulating system.

[0009] And a support leg, the support leg is mounted on the line positioning frame, a pressure detection wheel is rotatably mounted on the bottom end of the support leg, and a pressure detection processing module is also fixedly mounted on the support leg;

[0010] The pressure detection wheel is connected to the pressure detection processing module by a signal, and the pressure detection processing module is also connected to the detection control module by a signal.

[0011] The tracing positioning frame is also equipped with a propulsion detection device for driving the outriggers to move horizontally on the tracing positioning frame, and the lowest end of the pressure detection wheel is located on the same horizontal plane as the lowest end of the tracing device.

[0012] As a further aspect of the present invention: the tracing positioning frame is provided with a limiting mounting groove, and the pressure regulating housing is connected to the tracing positioning frame through the limiting mounting groove.

[0013] As a further aspect of the present invention: the line drawing device includes:

[0014] A lifting rod, which is connected to the pressure regulating system;

[0015] A tracing support rod is provided, which is detachably connected to the lifting rod via a flange joint, and a tracing wheel is rotatably mounted on the bottom end of the tracing support rod.

[0016] And a rotation detection unit 1, which is located at the tracing wheel and is used to detect the pressure and the number of rotations of the tracing wheel.

[0017] As a further aspect of the present invention: the support leg is also provided with a rotation detection part two, which is located close to the pressure detection wheel and is used to detect the pressure and the number of rotations of the rotation detection part two.

[0018] As a further aspect of the present invention: the propulsion detection device includes:

[0019] Mounting base, the mounting base is fixedly mounted on the pressure regulating housing, and a translation drive component is fixedly mounted on the mounting base;

[0020] A displacement detection support is fixedly installed on the line drawing and positioning frame, and a screw is provided between the displacement detection support and the translation drive component. The displacement detection support is used to detect the number of rotations of the screw.

[0021] A threaded sleeve is fitted onto the screw and connected to the support leg;

[0022] And a limiting unit, which is connected to the tracing positioning frame and the threaded sleeve respectively.

[0023] As a further aspect of the present invention: the limiting unit includes:

[0024] A movable detection limiting groove is formed on the tracing positioning frame;

[0025] The slider assembly is fixedly mounted on the threaded sleeve and is also inserted into the movement detection limiting groove and slidably connected to the movement detection limiting groove.

[0026] As a further aspect of the present invention, it also includes a protective connecting rod, which is fixedly installed between the threaded sleeve and the support leg.

[0027] As a further aspect of the present invention: the working steps of the pressure detection and processing module include:

[0028] Step 1: Receive pressure data and rotation count from the pressure detection wheel in real time;

[0029] Step 2: Analyze the pressure data to determine whether the thickness of the cut piece is a constant or a gradual value. If it is a constant thickness difference, calculate the target pressure adjustment value. If it is a gradual thickness difference, send a start signal to the push detection device.

[0030] Step 3: After the detection equipment is started, it continuously collects pressure data in the extended area and generates an average pressure value every 0.5 seconds.

[0031] Step 4: Convert the processed pressure adjustment value or average pressure value into an electrical signal and transmit it to the detection and control module, and simultaneously record the movement distance of the pressure detection wheel.

[0032] As a further aspect of the present invention: In step 3, after the propulsion detection device is started, the pressure detection processing module receives the pressure data collected by the pressure sensor and the movement distance recorded by the rotary encoder through the built-in microcontroller unit and A / D converter. After removing abnormal data that exceeds the 0.1-5N threshold, the average pressure value within 0.5 seconds is calculated using the moving average method, and the average pressure value is transmitted to the detection control module.

[0033] As a further aspect of the present invention: the working steps of the detection control module include:

[0034] Step 1: Receive the pressure adjustment signal transmitted by the pressure detection and processing module, and at the same time obtain the real-time pressure and number of rotations of the tracing wheel fed back by the rotating detection unit.

[0035] Step 2: Calculate the pressure adjustment delay time based on the initial distance between the pressure detection wheel and the tracing wheel and the equipment moving speed;

[0036] Step 3: Send control commands to the pressure regulation system. For constant thickness difference, directly adjust the height of the tracing wheel. For gradual thickness difference, adjust gradually according to the average pressure value. Update the pressure parameters every 5cm.

[0037] Step 4: Compare the number of rotations of the tracing wheel and the pressure detection wheel in real time. If the deviation exceeds 5%, send a compensation signal to correct the tracing pressure.

[0038] Step 5: When the pressure of the pressure detection wheel is zero, control the tracing wheel to stop the tracing operation after moving a preset distance.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. The tracing pressure can be precisely adjusted to avoid problems such as unclear tracing marks due to insufficient pressure or damage to the cut pieces / equipment due to excessive pressure, ensuring uniform tracing and significantly improving tracing quality and effect;

[0041] 2. It can distinguish between constant thickness difference and gradual thickness difference of cut pieces and adopt appropriate adjustment strategies for different situations: for constant thickness difference, the height of the tracing wheel is directly adjusted; for gradual thickness difference, the detection area is expanded by advancing the detection equipment and the average pressure value is calculated and gradually adjusted to adapt to complex cut piece thickness change scenarios.

[0042] 3. Achieve precise synchronization between pressure detection and tracing action. By calculating the pressure adjustment delay time, ensure that the pressure is adjusted synchronously when the tracing wheel reaches the thickness change area, and avoid abrupt changes in the tracing mark in the transition area.

[0043] 4. It has the ability to process abnormal data. By removing abnormal pressure data that exceeds the 0.1-5N threshold, it calculates the average pressure value using the moving average method, thereby improving the stability and reliability of pressure detection and regulation.

[0044] 5. The structural design is robust, with limiting mounting grooves and slider assemblies ensuring stable connection of each component and preventing component displacement during operation from affecting the line drawing accuracy; the protective linkage can protect the pressure detection wheel in abnormal situations, reducing the risk of equipment damage;

[0045] 6. When the pressure of the pressure detection wheel is zero, the drawing wheel can be controlled to move a preset distance and then automatically stop the operation, realizing automated control of the drawing process and improving production efficiency. Attached Figure Description

[0046] Figure 1 This is a three-dimensional structural diagram of the tracing positioning frame in an embodiment of the present invention.

[0047] Figure 2 This is a three-dimensional structural diagram of the pressure regulating housing in an embodiment of the present invention.

[0048] Figure 3 This is a three-dimensional structural diagram of the line-drawing support rod in an embodiment of the present invention.

[0049] Figure 4This is a cross-sectional view of the lifting rod in an embodiment of the present invention.

[0050] Figure 5 This is a three-dimensional structural diagram of the tracing wheel in an embodiment of the present invention.

[0051] Figure 6 This is a three-dimensional structural diagram of the protective linkage in an embodiment of the present invention.

[0052] Figure 7 This is a three-dimensional structural diagram of the pressure detection and processing module in an embodiment of the present invention.

[0053] Figure 8 This is a flowchart of the pressure detection and processing module in an embodiment of the present invention.

[0054] In the diagram: 1-Line drawing positioning frame, 2-Limit mounting groove, 3-Pressure regulating housing, 4-Detection control module, 5-Movement detection limit groove, 6-Cover plate, 7-Line drawing support rod, 8-Flange joint, 9-Translation drive component, 10-Screw, 11-Displacement detection support, 12-Mounting base, 13-Lifting rod, 14-Rotating detection part one, 15-Line drawing wheel, 16-Slider assembly, 17-Threaded sleeve, 18-Protective connecting rod, 19-Leg, 20-Pressure detection processing module, 21-Pressure detection wheel, 22-Rotating detection part two. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0057] Please see Figures 1-7 The present invention provides a garment seam marking and positioning fixture, including a marking and positioning frame 1, and further comprising:

[0058] Pressure regulating housing 3 is fixedly installed on the tracing positioning frame 1, and a pressure regulating system is provided inside the pressure regulating housing 3. A tracing device is detachably installed on the pressure regulating system.

[0059] The detection and control module 4 is fixedly installed on the pressure regulating housing 3 and is connected to the pressure regulating system via signal.

[0060] And a support leg 19, the support leg 19 is mounted on the line positioning frame 1, a pressure detection wheel 21 is rotatably mounted on the bottom end of the support leg 19, and a pressure detection processing module 20 is also fixedly mounted on the support leg 19;

[0061] The pressure detection wheel 21 is connected to the pressure detection processing module 20 by a signal, and the pressure detection processing module 20 is also connected to the detection control module 4 by a signal.

[0062] The tracing positioning frame 1 is also equipped with a propulsion detection device for driving the support leg 19 to move horizontally on the tracing positioning frame 1, and the lowest end of the pressure detection wheel 21 is located on the same horizontal plane as the lowest end of the tracing device.

[0063] When tracing seams in garments, firstly, driven by external equipment, the tracing positioning frame 1 and the tracing device move along the seam to perform the tracing operation. The tracing positioning frame 1 is mounted on the external equipment (e.g., on an external robotic arm; driven by the robotic arm, it moves the tracing positioning frame 1 and the tracing device along the seam's trajectory). Then, a pressure detection wheel 21 is positioned in front of the tracing device in its forward direction (i.e., the area pressed by the pressure detection wheel 21 is then traced by the tracing device; this wheel can be made of polyurethane, with a diameter of 30mm, a width of 10mm, and a surface hardness of 60 Shore). A, with a pre-pressure of 0.5-2N, can be used to detect and smooth out wrinkles at the seams via the pressure detection wheel 21, ensuring uniform tracing. It can also detect the thickness of different seam areas. Since the distance between the pressure detection wheel 21 and the tracing positioning frame 1 is fixed, different thickness areas will exert different pressures on the pressure detection wheel 21. After the pressure test, the pressure data is immediately processed by the pressure detection processing module 20 and transmitted to the detection control module 4. The detection control module 4 can then control the pressure adjustment system (the cover plate 6 on the pressure adjustment housing 3 can be opened for inspection and maintenance of the pressure adjustment system). The pressure adjustment system can be a hydraulic or electric system to change the height of the tracing equipment (for example, using a servo electric cylinder (model EC-60) with a rated thrust of 500N, a stroke of 0-100mm, a response speed ≤0.1s, and suitable for fabric thicknesses of 0.(1-5mm), thus the tracing pressure can be controlled according to the pressure detected by the pressure detection wheel 21. This avoids insufficient tracing pressure, which would result in indistinct tracing marks and affect subsequent sewing operations, and also avoids excessive tracing pressure, which would damage the garment pieces or the tracing equipment, increasing production costs. This ensures uniform tracing and improves the tracing effect on the garment. During normal inspection (pressure detection wheel 21 is in the initial position), the distance between the pressure detection wheel 21 and the tracing equipment is a certain length (e.g., 15cm). After the pressure detection wheel 21 detects a change in thickness, due to the movement of the tracing equipment... If the feed rate is constant, the detection and control module 4 will adjust the pressure of the tracing device on the garment piece after a certain interval. This prevents excessive changes in the tracing marks in thickness transition areas and allows for precise control of the pressure at thickness variation points, ensuring smooth tracing operations. This approach typically addresses situations with two constant height differences (e.g., the thickness of the garment piece increases, but the height remains constant after the increase). However, for tracing areas with gradually changing height differences, adjusting constant pressure or real-time pressure adjustment can be difficult, affecting tracing quality. Therefore, by… When the pressure detection wheel 21 detects a gradual change in the pressure difference of the cut piece (at this time, the tracing device has not yet reached the area of ​​height change), the pressure detection processing module 20 will control the movement of the push detection device (at this time, the pressure detection processing module 20 does not control the movement of the detection control module 4). The push detection device will push the support leg 19 to move a certain distance in the horizontal direction of the tracing positioning frame 1 (the distance between the pressure detection wheel 21 and the tracing device gradually increases), thereby allowing the pressure detection wheel 21 to detect more areas of height change. At this time, the data detected by the pressure detection wheel 21 is used in the pressure detection... The processing module 20 performs averaging to obtain the average value of the height difference change. At this time, the pressure detection processing module 20 controls the detection control module 4 to adjust the tracing device with an average pressure value. This allows the tracing device to perform tracing operations on the garment piece with the average pressure value in areas where the height gradually changes (new data can be generated every few seconds to update the average pressure value after the tracing device has traveled a certain distance, ensuring accurate tracing operations). This avoids the problem of excessively heavy or light tracing marks, improves the quality and effect of tracing, and provides convenience for workers.

[0064] In one embodiment of the present invention, please refer to Figures 1-7 The tracing positioning frame 1 is provided with a limiting installation groove 2, and the pressure regulating housing 3 is connected to the tracing positioning frame 1 through the limiting installation groove 2.

[0065] The line drawing device includes:

[0066] A lifting rod 13 is connected to the pressure regulating system;

[0067] The tracing support rod 7 is detachably connected to the lifting rod 13 via a flange joint 8, and a tracing wheel 15 is rotatably mounted on the bottom end of the tracing support rod 7.

[0068] And a rotation detection unit 14, which is located at the tracing wheel 15, for detecting the pressure and the number of rotations of the tracing wheel 15.

[0069] The support leg 19 is also provided with a rotation detection part 22, which is located near the pressure detection wheel 21 and is used to detect the pressure and the number of rotations of the rotation detection part 22.

[0070] The pressure regulating housing 3 is securely mounted on the tracing positioning frame 1 by the limiting mounting groove 2, preventing the tracing wheel 15 from shifting during the tracing process. Furthermore, driven by the pressure regulating system, the tracing support rod 7 and the tracing wheel 15 can be moved via the lifting rod 13, thereby adjusting the pressure on the tracing wheel 15. The pressure and number of rotations of the tracing wheel 15 are detected by the rotation detection unit 14, and feedback is sent to the detection control module 4 based on the pressure applied, facilitating the pressure regulating system's control of the height of the tracing wheel 15. Additionally, the number of rotations of the tracing wheel 15 is compared with the number of rotations of the pressure detection wheel 21 (detected by the rotation detection unit 22), ensuring that the tracing trajectory and displacement of the tracing wheel 15 match the movement trajectory of the pressure detection wheel 21. Under the coordinated control of both, the accuracy of the tracing wheel 15's tracing action in thickness transition areas and height difference change areas is further guaranteed.

[0071] In one embodiment of the present invention, please refer to Figures 1-7 The propulsion detection device includes:

[0072] Mounting base 12, the mounting base 12 is fixedly mounted on the pressure regulating housing 3, and a translation drive component 9 is fixedly mounted on the mounting base 12;

[0073] A displacement detection support 11 is fixedly installed on the line drawing positioning frame 1, and a screw 10 is provided between the displacement detection support 11 and the translation drive component 9. The displacement detection support 11 is used to detect the number of rotations of the screw 10.

[0074] Threaded sleeve 17, which is sleeved on the screw 10 and connected to the support leg 19;

[0075] And a limiting unit, which is connected to the tracing positioning frame 1 and the threaded sleeve 17 respectively.

[0076] The limiting unit includes:

[0077] The movable detection limiting groove 5 is formed on the tracing positioning frame 1;

[0078] And a slider assembly 16, which is fixedly installed on the threaded sleeve 17, and the slider assembly 16 is also inserted into the movement detection limiting groove 5 and slidably connected with the movement detection limiting groove 5.

[0079] It also includes a protective connecting rod 18, which is fixedly installed between the threaded sleeve 17 and the support leg 19.

[0080] When the height difference of the garment pieces changes continuously, the pressure detection processing module 20 controls the translation drive 9 (which is a motor) to start and drive the screw 10 to rotate. At this time, under the action of the screw 10 and the threaded sleeve 17 and the limiting sliding action between the slider assembly 16 and the moving detection limit groove 5, the threaded sleeve 17 can drive the support leg 19 to move quickly, thereby driving the pressure detection wheel 21 to collect data from more garment piece areas. This allows the average value of the pressure of the tracing wheel 15 to be calculated, thus ensuring the accuracy of the tracing. In addition, the displacement detection support 11 can indirectly determine the pressure detection wheel by detecting the number of rotations of the screw 10. The length of movement of the 21 is used to control the length of the line drawing wheel 15 at a certain pressure value. Of course, to ensure the speed of movement of the support leg 19, the propulsion detection device can also be pneumatically driven (such as by a cylinder). This will not be elaborated on here. When the pressure detected by the pressure detection wheel 21 is zero, it proves that the pressure detection wheel 21 has separated from the line drawing template. Then, after the line drawing wheel 15 moves a certain distance at the set pressure (the constant distance between the line drawing wheel 15 and the pressure detection wheel 21 + the displacement measured by the displacement detection support 11, where the constant distance between the line drawing wheel 15 and the pressure detection wheel 21 is the distance between the pressure detection wheel 21 and the line drawing wheel 15 when the pressure detection wheel 21 is in the initial position), the line drawing operation also stops. In addition, the protective link 18 is designed with an approximately elliptical structure and a certain degree of elasticity (the elasticity will not affect the normal detection operation of the pressure detection wheel 21, and the protective link 18 will not deform within the normal pressure range). Therefore, when the pressure detection wheel 21 malfunctions and exerts a large pressure on the protective link 18, the protective link 18 can deform to a certain extent, thereby preventing the pressure detection wheel 21 from being damaged due to excessive pressure.

[0081] In one embodiment of the present invention, please refer to Figures 1-8The working steps of the pressure detection and processing module 20 include:

[0082] Step 1: Receive pressure data (reflecting the thickness of the garment piece) and the number of rotations (reflecting the distance traveled) from the pressure detection wheel 21 in real time.

[0083] Step 2: Analyze the pressure data to determine whether the thickness of the cut piece is a constant or gradually changing value:

[0084] If the thickness difference is constant (e.g., a sudden change from 0.5mm to 2mm and then remains stable), the target pressure adjustment value is calculated directly; if the thickness difference is gradual (e.g., a gradual increase from 0.5mm to 2mm), a start signal is sent to the propulsion detection equipment.

[0085] Step 3: After the propulsion detection equipment is started (the support leg 19 drives the pressure detection wheel 21 to move horizontally a certain distance and then stops moving), during the process of the overall equipment moving and tracing, pressure data in the extended area is continuously collected, and an average pressure value is generated every 0.5 seconds.

[0086] Step 4: Convert the processed pressure adjustment value or average pressure value into an electrical signal and transmit it to the detection and control module 4, and simultaneously record the moving distance of the pressure detection wheel 21 (based on the number of revolutions of the rotating detection unit 22).

[0087] In step 3, the specific process by which the pressure detection and processing module 20 generates the average pressure value after the propulsion detection equipment is started includes:

[0088] (1) Control components and data acquisition;

[0089] The pressure detection and processing module 20 has a built-in STM32F103 microcontroller unit (MCU) and a 12-bit A / D converter, and is connected to the rotation detection unit 22 (which includes a pressure sensor and a rotary encoder) for signal transmission.

[0090] The pressure sensor collects the pressure data P of the pressure detection wheel 21 in real time. i (Unit: N), sampling frequency is 100Hz (i.e., data is collected once every 0.01 seconds), reflecting the change in height difference of garment pieces;

[0091] Height difference h i With pressure P i Satisfies a linear relationship:

[0092] ;

[0093] Where k is the fabric stiffness coefficient (k is approximately 0.8 mm / N for cotton fabrics and approximately 1.2 mm / N for synthetic fiber fabrics), and b is the initial thickness compensation value (default b = 0.1 mm).

[0094] The rotary encoder records the number of rotations of the pressure detection wheel 21, and calculates the moving distance of the extended area (each rotation corresponds to a circumference of 30mm). Combined with the moving speed of the equipment (0-100mm / s), the effective sampling interval within 0.5 seconds is determined (e.g., when the moving speed is 50mm / s, the movement is 25mm within 0.5 seconds, which corresponds to approximately 833 samples).

[0095] (2) Data preprocessing and outlier removal;

[0096] The MCU collects P data within 0.5 seconds. i Preprocessing:

[0097] Set pressure threshold range: Based on the common thickness of clothing fabrics (0.1-5mm), the corresponding pressure threshold is P. min =0.1N (0.1mm thickness) to P max =5N (5mm thickness);

[0098] Remove outlier data that exceeds the threshold (such as P caused by a sudden bulge due to fabric wrinkles). i >P max P, or caused by fabric damage i <P min ), retain valid data sets P1, P2, ..., P n (n is the number of valid samples).

[0099] (3) Calculation of mean pressure value;

[0100] The average pressure value over 0.5 seconds is calculated using the moving average method (an existing data processing method). The formula is as follows:

[0101] ;

[0102] Among them, the average pressure value Average height difference within the extended area correspond( This ensures that when the subsequent detection control module 4 adjusts the tracing pressure, it can match the overall trend of height difference changes (e.g., an average height difference of 2mm corresponds to an average pressure of 2N, and when k=0.8mm / N for cotton fabric). ).

[0103] (4) Data output

[0104] The MCU will calculate and corresponding The signal is packaged into a standard signal (via RS485 protocol) and transmitted to the detection and control module 4 as a reference value for the pressure adjustment of the line drawing device. At the same time, the original data and average results are stored (data from nearly 10 sets of 0.5-second intervals can be traced) to facilitate subsequent trajectory calibration.

[0105] Through the above process, the pressure detection and processing module 20 can accurately generate an average pressure value that reflects the change in height difference, avoiding incorrect adjustment of the tracing pressure caused by local fabric fluctuations (such as slight wrinkles or yarn protrusions), and ensuring that the tracing marks in the gradient area are uniform (error ≤ 0.2mm).

[0106] In one embodiment of the present invention, the working steps of the detection and control module 4 include:

[0107] Step 1: Receive the pressure adjustment signal transmitted by the pressure detection and processing module 20, and at the same time obtain the real-time pressure and number of rotations of the tracing wheel 15 fed back by the rotating detection unit 14 (reflecting the tracing position).

[0108] Step 2: Calculate the pressure adjustment delay time based on the initial distance (e.g., 15cm) between the pressure detection wheel 21 and the tracing wheel 15 and the cutting piece movement speed (to ensure that the tracing wheel 15 is adjusted synchronously when it reaches the thickness change area).

[0109] Step 3: Send control commands to the pressure regulation system:

[0110] If the thickness difference is constant, the lifting rod 13 is directly driven to adjust the height of the tracing wheel 15 so that the tracing pressure matches the target value;

[0111] If the thickness difference is gradual, adjust the lifting rod 13 step by step according to the average pressure value, and update the pressure parameter every 5cm of progress.

[0112] Step 4: Compare the number of rotations of the tracing wheel 15 and the pressure detection wheel 21 in real time. If the deviation between the two exceeds 5% (such as the inconsistent displacement caused by fabric stretching), send a compensation signal to the pressure adjustment system to correct the tracing pressure.

[0113] Step 5: When the pressure detection and processing module 20 reports that the pressure of the pressure detection wheel 21 is zero (detached from the cut piece), the tracing wheel 15 is controlled to stop the tracing operation after moving a preset distance (initial spacing + distance moved by the pressure detection wheel 21).

[0114] It should be noted that, in this invention, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0115] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tooling for tracing and positioning in garment sewing, comprising a tracing and positioning frame, characterized in that, Also includes: A pressure regulating housing is fixedly installed on the tracing positioning frame, and a pressure regulating system is provided inside the pressure regulating housing. A tracing device is detachably installed on the pressure regulating system. A detection and control module is fixedly installed on the pressure regulating housing and is signal-connected to the pressure regulating system. And a support leg, the support leg is set on the line positioning frame, a pressure detection wheel is rotatably installed at the bottom end of the support leg, and a pressure detection processing module is also fixedly installed on the support leg; The pressure detection wheel is connected to the pressure detection processing module by a signal, and the pressure detection processing module is also connected to the detection control module by a signal. The tracing positioning frame is also equipped with a propulsion detection device for driving the outriggers to move horizontally on the tracing positioning frame, and the lowest end of the pressure detection wheel is located on the same horizontal plane as the lowest end of the tracing device. The line drawing device includes: a lifting rod, which is connected to the pressure regulating system; A tracing support rod is provided, which is detachably connected to the lifting rod via a flange joint, and a tracing wheel is rotatably mounted on the bottom end of the tracing support rod. And a rotation detection unit 1, which is located at the tracing wheel and is used to detect the pressure and the number of rotations of the tracing wheel; The support leg is also provided with a rotation detection part two, which is located close to the pressure detection wheel and is used to detect the pressure and the number of rotations of the pressure detection wheel; The propulsion detection device includes: a mounting base, which is fixedly mounted on the pressure regulating housing, and a translation drive component is fixedly mounted on the mounting base; A displacement detection support is fixedly installed on the line drawing and positioning frame, and a screw is provided between the displacement detection support and the translation drive component. The displacement detection support is used to detect the number of rotations of the screw. A threaded sleeve is fitted onto the screw and connected to the support leg; And a limiting unit, which is connected to the tracing positioning frame and the threaded sleeve respectively.

2. The garment seam stitching and positioning fixture according to claim 1, characterized in that, The tracing positioning frame is provided with a limiting installation groove, and the pressure regulating housing is connected to the tracing positioning frame through the limiting installation groove.

3. The garment seam stitching and positioning fixture according to claim 1, characterized in that, The limiting unit includes: A movable detection limiting groove is formed on the tracing positioning frame; The slider assembly is fixedly mounted on the threaded sleeve and is also inserted into the movement detection limiting groove and slidably connected to the movement detection limiting groove.

4. The garment seam stitching and positioning fixture according to claim 3, characterized in that, Also includes: A protective connecting rod is fixedly installed between the threaded sleeve and the support leg.

5. The garment seam stitching and positioning fixture according to claim 4, characterized in that, The working steps of the pressure detection and processing module include: Step 1: Receive pressure data and rotation count from the pressure detection wheel in real time; Step 2: Analyze the pressure data to determine whether the thickness of the cut piece is a constant or a gradual value. If it is a constant thickness difference, calculate the target pressure adjustment value. If it is a gradual thickness difference, send a start signal to the push detection device. Step 3: After the detection equipment is started, it continuously collects pressure data in the extended area and generates an average pressure value every 0.5 seconds. Step 4: Convert the processed pressure adjustment value or average pressure value into an electrical signal and transmit it to the detection and control module, and simultaneously record the movement distance of the pressure detection wheel.

6. The garment seam stitching and positioning fixture according to claim 5, characterized in that, In step 3, after the propulsion detection equipment is started, the pressure detection processing module receives the pressure data collected by the pressure sensor and the movement distance recorded by the rotary encoder through the built-in microcontroller unit and A / D converter. After removing abnormal data that are not within the 0.1-5N threshold range, the average pressure value within 0.5 seconds is calculated using the moving average method, and the average pressure value is transmitted to the detection control module.

7. The garment seam stitching and positioning fixture according to claim 1, characterized in that, The working steps of the detection control module include: Step 1: Receive the pressure adjustment signal transmitted by the pressure detection and processing module, and at the same time obtain the real-time pressure and number of rotations of the tracing wheel fed back by the rotating detection unit. Step 2: Calculate the pressure adjustment delay time based on the initial distance between the pressure detection wheel and the tracing wheel and the equipment moving speed; Step 3: Send control commands to the pressure regulation system. For constant thickness difference, directly adjust the height of the tracing wheel. For gradual thickness difference, adjust gradually according to the average pressure value. Update the pressure parameters every 5cm. Step 4: Compare the number of rotations of the tracing wheel and the pressure detection wheel in real time. If the deviation exceeds 5%, send a compensation signal to correct the tracing pressure. Step 5: When the pressure of the pressure detection wheel is zero, control the tracing wheel to stop the tracing operation after moving a preset distance.

Images