Intelligent fabric tailoring equipment and tailoring method based on stress pre-release

Abstract

The invention belongs to the technical field of intelligent manufacturing of textiles and garments, and particularly relates to intelligent fabric tailoring equipment and tailoring method.The intelligent fabric tailoring equipment comprises a fabric table, a Y-shaped sliding rail is arranged on the fabric table in the length direction of the fabric table, and an X-shaped sliding rail slidably connected to the Y-shaped sliding rail is arranged on the fabric table in the width direction of the fabric table; through contact type thickness sensing and slope transmission mechanisms of balls, limiting spring rods, V-shaped plates and inclined blocks, the physical thickness of fabric is converted into the horizontal distance between a heating machine and a cutter in real time, the upward moving amplitude of the balls pushed by thick fabric is large, the inclined blocks are extruded by the V-shaped plates to enable the heating machine to move outwards, a stress treatment area is expanded to permeate a thick fiber layer, and the fabric is heated to be uniform. The heating machines are made to be close to the cut-off knife, heat damage and energy waste are avoided, equidistant synchronous adjustment of the heating machines on the two sides is guaranteed by designing a linkage structure of a rotary disc, a rotary rod and a matching block, and accurate matching of a stress pre-release area and the thickness of the fabric is achieved by combining mechanical locking of a pawl and a ratchet wheel.

Description

Technical Field

[0001] This invention belongs to the field of intelligent manufacturing technology for textiles and apparel, and particularly relates to an intelligent fabric cutting device and cutting method based on stress pre-release. Background Technology

[0002] In the textile and apparel, home textile and other industries, automatic cutting equipment is the core equipment connecting the processing of fabric rolls and cut pieces. The mainstream automated cutting system usually consists of units such as a fabric spreading machine, a vacuum adsorption fixing table and an intelligent cutting bed. Its standard operating procedure is as follows: after the fabric is spread out by the spreading machine, it is laid flat on the cutting table in a multi-layer stacking manner. Then, the negative pressure generated by the vacuum adsorption system tightly and flatly fixes the multi-layer fabric to the table. Finally, the cutting blade completes the precise cutting according to the preset pattern data.

[0003] There is a long-standing technical problem in the fabric cutting process: during the vacuum adsorption and fixation stage, the fabric is forcibly stretched and adhered to a rigid table. The original internal stress is redistributed and partially locked within the fabric layer. When the cutter finishes cutting, the fixed constraint in the local area of ​​the cut piece is suddenly released, and the previously accumulated internal stress is rapidly released. Due to the uneven distribution of stress, the shrinkage at the edge of the cut piece is inconsistent, resulting in deformation defects such as curling and wavy shapes. This problem directly reduces the matching accuracy of garment sewing and seriously affects the dimensional stability and appearance quality of the final product.

[0004] To address this issue, existing technologies have developed methods that apply localized heating near the cutting path, aiming to shape the fibers through thermal effects and reduce deformation caused by stress release. However, these methods face the following key technical bottlenecks: First, the spacing between heating sources in existing equipment is usually a fixed value or requires manual adjustment, and cannot be adaptively adjusted according to different fabric thicknesses. For thick fabrics, if the heating spacing is too small, it is easy to cause heat concentration and difficulty in evenly penetrating the thick fiber layer, or even cause local burns. For thin fabrics, if the heating spacing is too large, the heat effect is insufficient and the shaping is not adequate. Secondly, existing fabric cutting and heating setting equipment cannot dynamically adapt the heat field to the fabric thickness. When processing thick fabrics, it has problems such as narrow heating area, easy surface damage and insufficient deep setting when increasing power. When processing thin fabrics, the excessively wide heating area causes fiber thermal fatigue and fabric deformation in non-cutting areas. It is difficult to take into account the edge setting effect and processing quality of fabrics of different thicknesses. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a smart fabric cutting device and cutting method based on stress pre-release.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows: This invention discloses an intelligent fabric cutting device based on stress pre-release, including a fabric table, a Y-shaped slide rail arranged along its length, an X-shaped slide rail slidably connected to the Y-shaped slide rail arranged along its width, a padding plate installed below the X-shaped slide rail, a drive motor arranged on the X-shaped slide rail, a cutting blade installed at the output end of the drive motor, an adsorption machine arranged at the four corners of the fabric table, and two heating machines symmetrically distributed on both sides of the cutting blade arranged on the drive motor. A spacing adjustment component, mounted on the drive unit, is used to adjust the spacing between the two heating elements relative to the cutting blade; An air outlet adjustment component, which is installed on the heater, is used to adjust the air outlet area of ​​the heater.

[0007] Furthermore, the spacing adjustment component includes: The spacing frame is rectangular in shape and is installed at the output end of the drive motor. It has grooves at both ends and the cutting blade slides through the middle of the spacing frame. Two limit spring rods slide through the left and right ends of the spacing frame, respectively, and baffles are installed at their lower ends; The ball bearing is rolled and connected below the baffle. A V-shaped plate, one end of which is fixedly connected to the top of the limiting spring rod; Two slide rail seats are slidably connected in the slide grooves of the spacing frame, and the heater is installed below the slide rail seats; An inclined block, in the shape of an isosceles triangle, is fixedly installed on the slide rail seat, with its inclined surface in close contact with the other side of the V-shaped plate. The reset plate is installed on the side of the inclined block away from the V-shaped plate; Two sets of fixing plates, two in each set, are symmetrically installed at the left and right ends of the spacing frame; Two sets of reset spring rods, two in each set, are symmetrically mounted on the reset plate, and their ends slide through the middle of the corresponding fixed plate.

[0008] Furthermore, the spacing adjustment component also includes: A turntable is rotatably connected to the bottom of the spacing frame and is coaxially slidably sleeved on the outside of the cutter. The rotating block is fixedly installed in the middle of the turntable; Two rotating rods, one end of which is hinged to the front and rear sides of the rotating block respectively; Two mating blocks are slidably connected to the left and right sides of the bottom of the spacing frame via slide rails. The slide rail seat is fixedly installed on the top of the corresponding mating block. The other end of each rotating rod is hinged to the middle of the mating block on the corresponding side.

[0009] Furthermore, a motor is mounted below the spacing frame via a motor mount, and a pawl is mounted on the output end of the motor. A ratchet is coaxially mounted below the turntable, and a locking plate is also fixedly mounted below the spacing frame. A compression spring is connected between the locking plate and the pawl, and the elasticity of the compression spring causes the pawl to tend to swing toward the ratchet so that it is embedded in the ratchet groove of the ratchet.

[0010] Furthermore, a miniature ball bearing that can elastically extend and retract in a direction perpendicular to the inclined plane is installed on the inclined surface of the inclined block near the V-shaped plate. A ball bearing groove is correspondingly opened on the inclined surface of the V-shaped plate near the inclined block, and the miniature ball bearing is partially embedded in the ball bearing groove for rolling connection.

[0011] Furthermore, the heating machine includes: The heating box has a rectangular box structure with an open bottom, and the heating box is installed below the mating block; Several fans are arranged and installed along the length of the heating box to generate and deliver airflow downwards; Two baffles, in an L-shape, are symmetrically distributed on both sides of the bottom opening of the heating box.

[0012] The air outlet regulating component includes: Two sets of limiting rods are symmetrically installed at the rear end of the heating box, and one end of the baffle plate is slidably sleeved on the corresponding limiting rod; A bidirectional threaded rod is rotatably connected to the middle of the rear end of the heating box, and its two threads with opposite directions respectively engage with one end of the two baffle plates. A rack plate is fixedly installed on the spacing frame; The driven gear is rotatably connected to the mating block and remains engaged with the rack plate; The transmission rod has one end fixedly connected to the driven gear, and the other end rotatably passes through the mating block; An L-shaped plate is fixedly installed at the middle of the rear end of the heating box; The first driven gear is rotatably connected to the top of the L-shaped plate and fixedly connected to the end of the transmission rod; The second driven gear is rotatably connected to the side wall of the L-shaped plate and meshes with the first driven gear. The second driven gear is fixedly connected to the middle part of the bidirectional threaded rod.

[0013] Furthermore, inclined fixed sleeve plates are hinged to the left and right ends of the interior of the heating box. A telescopic plate is slidably connected to the lower inside of the fixed sleeve plate. The moving end of the telescopic plate is hinged to one end of the baffle plate. Arc-shaped plates are installed on the left and right ends of the interior of the heating box, and the arc-shaped plates are positioned above the hinge part of the fixed sleeve plate.

[0014] Furthermore, a rectangular sleeve is installed below the shield and on the side near the movable end of the telescopic plate. A gathering plate is slidably connected inside the rectangular sleeve, and an expansion spring rod is installed inside the rectangular sleeve. The front and rear ends of the gathering plate are slidably connected through the rod portion of the expansion spring rod.

[0015] A smart fabric cutting method based on stress pre-release includes the following steps: After the fabric is laid out, the auxiliary suction cups and the padding board work together to complete the initial positioning and flattening, and then the four corner suction machines are used to fix it firmly. The ball contacts the fabric, and through the inclined surface mechanism of the V-shaped plate and the inclined block, the thickness signal is converted into a drive signal, which causes the slide rail to drive the heating machine to move outward at an equal distance. After adjustment, the compression spring pushes the pawl to engage with the ratchet wheel, mechanically locking the turntable and the entire heating unit assembly. The movement of the heater is converted into the rotation of a bidirectional threaded rod through a passive gear and rack plate, thereby synchronously driving the two baffle plates to slide in opposite directions and automatically adjusting the nozzle width to match the spacing. The fan and heating tube generate hot air, which is guided by the arc plate and converged and accelerated on the surface of the fixed sleeve plate to form a concentrated jet. The heating machine accurately blows the concentrated hot air to the fabric on both sides of the cutting knife, so that the fabric stress is pre-released. After the cutting blade completes the cutting, the drive motor lifts up, the motor unlocks the pawl, and the return spring rod pulls the wedge block, slide rail seat, and heating machine back to their initial positions.

[0016] Compared with existing technologies, the intelligent fabric cutting device and method based on stress pre-release described in this invention have the following advantages: 1. This invention utilizes a contact-type thickness sensing and inclined plane transmission mechanism consisting of ball bearings, limit spring rods, V-shaped plates, and inclined blocks to convert the physical thickness of the fabric into the horizontal distance between the heating machine and the cutting blade in real time. Thicker fabrics push the ball bearings upwards with a large amplitude, while the V-shaped plates squeeze the inclined blocks, causing the heating machine to move outwards, expanding the stress treatment area to penetrate the thick fiber layer. Thinner fabrics allow the heating machine to move closer to the cutting blade, avoiding heat damage and energy waste. Simultaneously, the design of a linkage structure between the turntable, rotating rod, and mating block ensures that the heating machines on both sides are adjusted synchronously at equal distances. Combined with the mechanical locking of the pawl and ratchet, it achieves precise matching between the stress pre-release area and the fabric thickness, solving the problems of insufficient shaping of thick fabrics, overheating damage to thin fabrics, and energy waste in traditional equipment. It also eliminates curling and wavy deformation of the cut pieces caused by uneven stress, significantly improving the dimensional stability of the cut pieces.

[0017] 2. This invention, through the design of a passive gear, rack plate, and bidirectional threaded rod air outlet adjustment assembly, transforms the horizontal movement of the heating machine into the reverse sliding of the baffle plate, synchronously adjusting the width of the air outlet. Specifically, when the heating machine moves outward (for thick fabrics), the air outlet automatically widens to cover a larger stress-affected area; when the heating machine moves inward (for thin fabrics), the air outlet narrows to prevent hot air diffusion. Simultaneously, the arc-shaped plate, fixed sleeve plate, and telescopic plate inside the heating chamber form a variable flow channel, reshaping the airflow path as the baffle plate moves, achieving concentrated convergence and acceleration of hot air. This reduces heat loss and ensures precise application of hot air to the fabric on both sides of the cutting blade. This design overcomes the bottleneck of poor adaptability of fixed air outlet parameters in traditional equipment, achieving precise hot air area and energy density adaptation in the processing of fabrics of different thicknesses, thus improving processing efficiency and cut piece quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the spacing adjustment component of the present invention; Figure 3 This is a top view of the spacing adjustment component of the present invention; Figure 4 This is a schematic diagram of the spacing adjustment component of the present invention; Figure 5 This is a schematic diagram of the spacing frame of the present invention; Figure 6 yes Figure 5 A magnified view of part A in the image; Figure 7 This is a longitudinal cross-sectional view of the V-shaped plate and the slide rail seat of the present invention; Figure 8 This is a schematic diagram of the heating box of the present invention; Figure 9This is a schematic diagram of the air outlet adjustment component of the present invention. The markings in the diagram represent: 1. Fabric table; 10. Y-shaped slide rail; 11. X-shaped slide rail; 12. Drive motor; 13. Cutting knife; 14. Adsorption machine; 15. Heating machine; 16. Pad plate; 151. Heating box; 152. Fan; 153. Heating tube; 154. Baffle plate; 2. Spacing adjustment component; 21. Spacing frame; 22. Limiting spring rod; 220. Baffle plate; 23. Ball bearing; 24. V-shaped plate; 241. Ball bearing groove; 25. Slide rail seat; 26. Inclined block; 261. Miniature ball bearing; 27. Reset plate; 28. Fixing plate; 29. ​​Reset spring. 211. Rod; 212. Turntable; 213. Rotating block; 214. Rotating rod; 221. Mating block; 221. Motor; 222. Pawl; 223. Ratchet; 224. Locking plate; 225. Compression spring; 3. Air outlet adjustment assembly; 31. Limiting rod; 32. Bidirectional threaded rod; 33. Rack plate; 34. Driven gear; 35. Transmission rod; 36. L-shaped plate; 37. First driven gear; 38. Second driven gear; 321. Fixed sleeve plate; 322. Telescopic plate; 323. Arc plate; 331. Rectangular sleeve; 332. Gathering plate; 333. Expansion spring rod. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] See Figures 1-5As shown, this invention provides a fabric intelligent cutting device based on stress pre-release, including a fabric table 1. A Y-shaped slide rail 10 is arranged along the length of the fabric table 1, and an X-shaped slide rail 11 is slidably connected to the Y-shaped slide rail 10 along the width of the fabric table 1. A padding plate 16 is installed below the X-shaped slide rail 11. Auxiliary suction cups are installed at both ends of the X-shaped slide rail 11 to move the fabric. A drive motor 12 is installed on the X-shaped slide rail 11 for rotating and raising / lowering the cutting blade 13. The cutting blade 13 is installed at the output end of the drive motor 12. Adsorption units 14 are installed at the four corners of the fabric table 1 to fix the fabric. Two heaters 15 are symmetrically distributed on both sides of the cutting blade 13 on the drive motor 12 for heating the fabric before cutting to release stress. An air outlet adjustment component 3 is installed on the heaters 15 to adjust the air outlet area of ​​the heaters 15. A spacing adjustment component 2 is installed on the drive motor 12 to adjust the spacing between the two heaters 15 and the cutting blade 13. The spacing adjustment assembly 2 includes a spacing frame 21, which is rectangular in shape and installed at the output end of the drive motor 12. Slide grooves are provided at both ends of the frame. One end of the cutter 13 slides through the middle of the spacing frame 21. Two limiting spring rods 22 slide through the left and right ends of the spacing frame 21, respectively, and baffles 220 are installed at their lower ends. Ball bearings 23 are rotatably connected below the baffles 220. One end of a V-shaped plate 24 is fixedly connected to the top of the limiting spring rods 22. Two slide rail seats 25 are slidably connected to the spacing frame 21. Inside the slide groove 1, the heater 15 is installed below the slide rail seat 25; the inclined block 26 is in the shape of an isosceles triangle and is fixedly installed on the slide rail seat 25, with its inclined surface closely attached to the other side of the V-shaped plate 24; the reset plate 27 is installed on the side of the inclined block 26 away from the V-shaped plate 24; two sets of fixing plates 28, two in each set, are symmetrically installed at the left and right ends of the spacing frame 21; two sets of reset spring rods 29, two in each set, are symmetrically installed on the reset plate 27, and their ends slide through the middle of the corresponding fixing plate 28.

[0021] It should be noted that the fabric to be cut is laid on the fabric table 1. The auxiliary suction cups at both ends of the X-shaped slide rail 11 can move and adsorb the fabric to assist in its initial positioning. Then, the fabric is flattened by the padding plate 16. The adsorption machine 14 at the corners of the fabric table 1 is activated to firmly adsorb and fix the fabric on the table to prevent it from shifting in subsequent processes. The drive machine 12 drives the entire cutting blade 13 and the heating machine 15 to descend. Before the cutting blade 13 contacts the fabric, the ball bearing 23 at the bottom of the spacing adjustment component 2 first contacts the fabric surface. The fabric generates an upward reaction force on the ball bearing 23. This force is transmitted through the baffle 220, which pushes the limiting spring rod 22 and the V-shaped plate 24 fixed at its top to move upward. When the V-shaped plate 24 moves upward, its inclined surface will press against the inclined surface of the inclined block 26 that is in close contact with it. Under the action of the inclined surface, the inclined block 26 drives the slide rail seat 25 and the heating machine 15 below it to move away from the center line of the cutting blade 13 along the slide groove of the spacing frame 21. The mechanism composed of the reset spring rod 29 and the fixed plate 28 ensures that the inclined block 26 and the inclined surface of the V-shaped plate 24 are always in close contact, so that the motion transmission is smooth and can be reset. It is worth noting that this process linearly converts the physical thickness of the fabric, i.e., the height to which the ball bearing 23 is lifted, into the horizontal distance between the heating machines 15 on both sides and the cutting blade 13. The thicker the fabric, the higher the ball bearing 23 is lifted. The contact probe formed by the ball bearing 23, the baffle 220, and the limiting spring rod 22 is conducive to real-time sensing of the actual thickness of the fabric on the fabric table 1. The greater the displacement of the V-shaped plate 24, the greater the distance that the heating machine 15 moves outward. This realizes the automatic, synchronous, and equidistant adjustment of the heating area according to the fabric thickness. Using the inclined plane mechanism formed by the V-shaped plate 24 and the inclined block 26, the vertical displacement is accurately converted into the horizontal displacement. The heating machine 15 starts and blows hot air into the adaptively adjusted path area according to the air outlet area set by the air outlet adjustment component 3. The hot air acts on the fabric, causing the fibers to relax due to heat and the internal stress to be released in advance. This step can effectively reduce the problems of fabric deformation, wrinkling, or edge curling after cutting caused by the instantaneous release of stress during cutting.

[0022] After the stress is pre-released by heating, the drive machine 12 continues to drive the cutter 13 to descend and rotate, while moving along the planar motion system composed of the X-shaped slide rail 11 and the Y-shaped slide rail 10, cutting the fabric according to the preset path. Since the stress has been pre-released, the cutting process has less resistance and the cut is smoother and cleaner.

[0023] After cutting is completed, the drive motor 12 raises the cutting head. As the ball bearing 23 leaves the fabric, the limit spring rod 22 returns to its original position and pulls down under its own spring action. The V-shaped plate 24 then descends. At this time, under the elastic pull of the return spring rod 29, the return plate 27 drives the inclined block 26, the slide rail seat 25 and the heating machine 15 to move along the slide groove towards the center of the cutting blade 13, returning to the initial tight position and preparing for the next work cycle.

[0024] This invention enables the heating area to automatically match the stress-affected areas of fabrics with different thicknesses through the spacing adjustment component 2. For thick fabrics, the heating point needs to be farther away from the cutting line to fully treat the deeper stress layer, while for thin fabrics, the heating point is closer to the cutting line to avoid energy waste and heat damage. This solves the problem of poor versatility of fixed heating spacing equipment and realizes automatic adjustment of the heating position according to the fabric thickness without manual intervention or preset parameters, which significantly improves the adaptability and intelligence level of the equipment.

[0025] See Figures 5-6 As shown, the spacing adjustment assembly 2 also includes a turntable 211, which is rotatably connected to the bottom of the spacing frame 21 and coaxially slidably sleeved on the outside of the cutter 13; a rotating block 212 is fixedly installed in the middle of the turntable 211; one end of two rotating rods 213 is respectively hinged to the front and rear sides of the rotating block 212; two mating blocks 214 are respectively slidably connected to the left and right sides of the bottom of the spacing frame 21 through slide rails, and the slide rail seat 25 is fixedly installed on the top of the corresponding mating block 214, and the other end of each rotating rod 213 is hinged to the middle of the mating block 214 on the corresponding side.

[0026] It should be noted that in the initial state, when the heater 15 is in the minimum spacing position, the two mating blocks 214 are close to the center, and the rotating rod 213 is at a certain angle. When the spacing needs to be adjusted, the movement of the slide rail seat 25 on either side will cause the mating block 214 below it to slide together. The horizontal sliding of one mating block 214 will push the central rotating block 212 through the rotating rod 213 connected to it, forcing the turntable 211 to produce a slight rotation. The rotation of the turntable 211 will be immediately transmitted to the other mating block 214 through the rotating rod 213 on the other side, forcibly driving the other mating block 214 and the slide rail seat 25 fixed to it to move in opposite directions with equal displacement, making the movement process smoother and reducing the shaking or lag caused by unilateral jamming or uneven resistance. This improves the repeatability of the position adjustment of the heater 15. Moreover, if the movement on one side is blocked, the mechanism can transmit part of the driving force to the other side through the turntable 211 and the rotating rod 213, which helps to balance the resistance on both sides and prevent the mechanism from jamming.

[0027] It is worth noting that the present invention uses a pad plate 16 to evenly flatten the fabric, preventing wrinkles or local bulges in the fabric. When the ball bearing 23 contacts the fabric, it may misjudge the fabric thickness, causing abnormal upward movement of the V-shaped plate and resulting in deviation of the spacing adjustment of the heating machine 15. Therefore, the design of the pad plate 16 ensures that the fabric surface is flat and the thickness is uniform, providing a stable and reliable contact plane for the thickness sensing mechanism of the spacing adjustment component 2. This avoids thickness misjudgment caused by fabric wrinkles, enabling the heating machine 15 to accurately locate the stress-affected area of ​​the fabric and achieve efficient stress pre-release.

[0028] See Figures 6-7 As shown, a motor 221 is mounted on the lower part of the spacing frame 21 via a motor mount. A pawl 222 is mounted on the output end of the motor 221. A ratchet 223 is coaxially mounted on the lower part of the turntable 211. A locking plate 224 is also fixedly mounted on the lower part of the spacing frame 21. A compression spring 225 is connected between the locking plate 224 and the pawl 222. The elastic force of the compression spring 225 causes the pawl 222 to have a tendency to swing toward the ratchet 223 so that it is embedded in the ratchet groove of the ratchet 223.

[0029] It should be noted that when the cutting head descends and the fabric thickness pushes the heating machine 15 outward, the turntable 211 drives the ratchet 223 to rotate in the same direction. At this time, the inclined surface of the pawl 222 interacts with the tooth surface of the ratchet 223. The pawl 222 is lifted by the teeth of the ratchet 223 and elastically retracts. The compression spring 225 is further stretched, and the ratchet 223 can smoothly slide past the pawl 222 without hindering the adaptive adjustment process. This ensures that under subsequent stress and vibration conditions, during this dynamic adjustment process, whenever the pawl 222 passes the top of a ratchet tooth, it will immediately fall into the root of the next adjacent tooth groove under the elastic force of the compression spring 225, forming a real-time one-way limit. This can prevent the ratchet 223 from rotating in the opposite direction at any time, effectively avoiding the turntable 211 from retracting or the system from rebounding due to vibration or unexpected resistance during the adjustment process. The spacing adjustment component 2 itself does not undergo unexpected deformation or displacement.

[0030] When the adaptive adjustment is complete and the heating machine 15 reaches the target position, the turntable 211 stops rotating. At the instant the turntable 211 stops, the pawl 222, which has been compressed by the spring 225, quickly falls into the bottom of the tooth groove of the currently aligned ratchet 223 under its elastic force. The turntable 211 is immediately and firmly locked, preventing it from rotating in the opposite direction. This ensures that the distance between the two heating machines 15 remains absolutely fixed throughout the entire heating and cutting process, preventing it from retracting due to vibration or external force. Furthermore, the ratchet 223 mechanism only allows the turntable 211 to move freely outward in one direction relative to the corresponding heating machine 15, ensuring that the heating machine... 15 can only move in a direction away from the center of the cutter 13 to prevent it from reversing. At the same time, it also prevents the system from rebounding due to unexpected resistance during the adjustment process. After all the cutting processes are completed, the equipment needs to be reset for the next cycle. At this time, the motor 221 starts and drives its output end to rotate, pulling the tip of the pawl 222 out of the tooth groove of the ratchet 223 and completely disengaging it. Once the pawl 222 is disengaged, the lock of the turntable 211 is released. After resetting to the position, the motor 221 stops working, and the compression spring 225 presses the pawl 222 down again, pressing it against the tooth surface of the ratchet 223, preparing for the next work cycle.

[0031] This invention achieves reliable locking of the working position of the heating machine 15 through the cooperation of the pawl 222 and the ratchet 223. Its function is mainly reflected in two aspects. First, after the heating machine 15 is adaptively adjusted to the position according to the fabric thickness, the compression spring 225 drives the pawl 222 to engage with the ratchet groove of the ratchet 223, forming a mechanical stop, which firmly locks the turntable 211 and the heating machine 15 linked with it. This locking function can effectively resist the vibration during equipment operation and the reaction force generated by the cutting blade 13 during cutting, preventing any drift or retraction of the heating machine 15 during processing, and ensuring the absolute stability of its spacing adjustment result throughout the stress pre-release and cutting process. Second, through the above-mentioned mechanical locking, the relative positional relationship between the air outlet area of ​​the heating machine 15 and the cutting line of the cutting blade 13 is rigidly fixed. This ensures that the area where the hot air acts on the fabric is highly accurate and constant relative to the cutting path, thereby providing a stable and repeatable stress pre-release process benchmark for fabrics of different thicknesses and improving the uniformity and consistency of cutting quality.

[0032] See Figure 7 As shown, a miniature ball bearing 261 (not shown in the figure) that can elastically extend and retract along the direction perpendicular to the inclined plane is installed on the inclined surface of the inclined block 26 near the V-shaped plate 24. A ball bearing groove 241 is correspondingly opened on the inclined surface of the V-shaped plate 24 near the inclined block 26. It is worth noting that both ends of the ball bearing groove 241 are designed with an involute outward arc structure. When the miniature ball bearing 261 rolls to the groove opening position with the up and down micro-vibration of the V-shaped plate 24 or the horizontal movement of the inclined block 26, the involute outward arc structure will smoothly guide the ball bearing movement, avoiding the ball bearing being stuck by the right angle edge of the groove opening or generating jamming resistance. The miniature ball bearing 261 is partially embedded in the ball bearing groove 241 and rolls in connection.

[0033] It should be noted that, through the cooperation of the micro-balls 261 and the ball grooves 241, the friction between the V-shaped plate 24 and the inclined block 26 is transformed from sliding friction to rolling friction. This allows the tiny vertical displacement of the V-shaped plate 24 to be converted into the horizontal displacement of the inclined block 26 with extremely low resistance, significantly improving the sensitivity of the entire thickness feedback and spacing adjustment mechanism. Moreover, the high-speed rotation and cutting action of the cutter 13 will generate continuous vibration, which will be transmitted through the fabric to the ball 23, which is always in contact with the fabric, causing the limit spring rod 22 and the V-shaped plate 24 to generate corresponding... The high-frequency micro-amplitude vibration of the V-shaped plate 24 causes the micro-balls 261 to mainly roll or elastically stretch within the ball groove 241, rather than rigidly pushing the vibration to the inclined block 26 through static friction. This design isolates the transmission path of the micro-vibrations of the V-shaped plate 24 in the vertical direction to the horizontal movement of the inclined block 26. The vibration energy is absorbed, buffered, and dissipated by the elastic system and rolling action of the micro-balls 261, thereby ensuring that the inclined block 26, the slide rail seat 25, and the heating unit 15 are in a truly static state when locked.

[0034] See Figure 8 As shown, the heating machine 15 includes a heating box 151, which is a rectangular box structure with an open bottom. The heating box 151 is installed below the mating block 214. Several fans 152 are arranged and installed along the length of the heating box 151 to generate and deliver airflow downward. Two baffles 154 are L-shaped and symmetrically distributed on both sides of the bottom opening of the heating box 151, with the horizontal end of the baffle 154 located below the heating box 151.

[0035] It should be noted that during operation, several fans 152 are activated, generating a continuous and uniform forced airflow that is directed downwards. This airflow is rapidly heated as it passes through the heating pipe 153 installed in the middle of the housing, transforming into high-temperature hot air. This high-temperature hot air is blown downwards from the rectangular opening at the bottom of the heating chamber 151. An adjustable-width nozzle is formed between the horizontal ends of the two baffles 154. The airflow is restricted and directed downwards and outwards through this nozzle, precisely blowing towards the fabric areas on both sides of the cutting blade 13 to be cut for heating.

[0036] See Figures 8-9 As shown, the air outlet adjustment assembly 3 includes two sets of limiting rods 31, symmetrically installed at the rear end of the heating box 151, with one end of the baffle plate 154 slidably sleeved on the corresponding limiting rod 31; a bidirectional threaded rod 32, rotatably connected to the middle of the rear end of the heating box 151, with its two threads of opposite directions respectively threaded into one end of each of the two baffle plates 154; a rack plate 33 fixedly installed on the spacing frame 21; a driven gear 34 rotatably connected to the mating block 214 and meshing with the rack plate 33; a transmission rod 35, one end of which is fixedly connected to the driven gear 34, and the other end rotatably passes through the mating block 214; an L-shaped plate 36 fixedly installed at the middle of the rear end of the heating box 151; a first driven gear 37 rotatably connected to the top of the L-shaped plate 36 and fixedly connected to the end of the transmission rod 35; a second driven gear 38 rotatably connected to the side wall of the L-shaped plate 36 and meshing with the first driven gear 37, and the second driven gear 38 fixedly connected to the middle of the bidirectional threaded rod 32.

[0037] It should be noted that when the fabric thickness changes, causing the heating machine 15 to move outward or inward through the mating block 214, the driven gear 34 mounted on the mating block 214 moves horizontally accordingly. The driven gear 34 rolls on the fixed rack plate 33, precisely converting its horizontal linear displacement into rotational motion. The rotation of the driven gear 34 drives the transmission rod 35 connected to it to rotate synchronously. The transmission rod 35 transmits this rotation to the first driven gear 37 at the rear end of the heating box 151. The first driven gear 37 drives the second driven gear 38 meshing with it to rotate, thereby driving the bidirectional threaded rod 32 fixed to the second driven gear 38 to rotate. When the bidirectional threaded rod 32 rotates, its two threads with opposite directions drive the two baffle plates 154 that are mated with it to move synchronously and in opposite directions along the guide of the limiting rod 31. The linear motion of the heating element changes the distance between the nozzles at the horizontal ends of the two L-shaped baffles 154. Its function is to automatically establish and maintain the optimal proportional relationship between the width of the heating element 15's air outlet and its distance from the cutting blade 13. When the heating element 15 is far away from the cutting blade 13 due to the thickness of the fabric, the air outlet automatically widens to cover a wider stress-affected area. When the distance decreases, the air outlet automatically narrows to prevent excessive diffusion of hot air and energy waste. This ensures that fabrics of different thicknesses can obtain a hot air band with just the right width and concentrated energy. Through the design of the air outlet adjustment component 3, real-time and precise following adjustment is achieved, ensuring that the center line of the hot air bundle is always aligned with the optimal stress release position. This avoids positioning deviations caused by manual adjustment or fixed width, while concentrating the hot air in the necessary area, greatly reducing heat loss and improving energy efficiency.

[0038] See Figures 8-9 As shown, inclined fixed sleeve plates 321 are hinged to the left and right ends of the heating box 151. A telescopic plate 322 is slidably connected to the lower inside of the fixed sleeve plate 321. The moving end of the telescopic plate 322 is hinged to one end of the baffle plate 154. It is worth noting that the moving end of the telescopic plate 322 is located at the horizontal end of the baffle plate 154. Arc-shaped plates 323 are installed on the left and right ends of the heating box 151, and the arc-shaped plates 323 are located above the hinge part of the fixed sleeve plate 321.

[0039] It should be noted that when the air outlet regulating component 3 is working, its baffle 154 moves outward, thereby driving the telescopic plate 322 to move synchronously. The fixed sleeve 321 is hinged to the heating box 151 at its root and can swing. The telescopic plate 322 retracts inside the fixed sleeve 321. The fixed sleeve 321 and the telescopic plate 322 are not only transmission components, but their upper surfaces together form the lower variable boundary of the airflow channel inside the heating box 151. The shape and tilt angle of the lower boundary change synchronously, thereby reshaping the flow channel shape of the airflow to the final nozzle. Specifically, the airflow generated by the fan 152 blows towards this variable lower boundary, and its tilted surface reflects and guides the airflow to the opening baffle. The nozzle direction formed by plate 154 plays a basic converging role. The arc plate 323 is set above the hinge of the fixed sleeve plate 321, providing a smooth transition surface for the airflow and guiding the airflow to the side of the fixed sleeve plate 321. This eliminates turbulence from the direction of the fan 152 and eddies generated by the hinge mechanism. At the same time, the arc plate 323 cooperates with the surface of the variable fixed sleeve plate 321 below to form a flow channel with a gradually shrinking cross-sectional area. This pre-compresses and accelerates the airflow, ensuring that the airflow can pass through the bottom without significant loss and is precisely guided to the narrowest nozzle determined by the horizontal ends of the two baffle plates 154, greatly reducing the heat diffusion loss in the box.

[0040] A rectangular sleeve 331 is installed below the shielding plate 154 and near the movable end of the telescopic plate 322. A gathering plate 332 is slidably connected inside the rectangular sleeve 331. An expansion spring rod 333 is installed inside the rectangular sleeve 331. The front and rear ends of the gathering plate 332 are slidably connected through the rod portion of the expansion spring rod 333.

[0041] In the initial state, the expansion spring rod 333 is in the extended state, and its elasticity pushes the gathering plate 332 outward from the rectangular sleeve 331. When processing fabrics of different thicknesses, through the adaptive sliding of the rectangular sleeve 331 and the gathering plate 332, under the combined action of the elasticity of the expansion spring rod 333 and the pressure of the airflow, the airflow on both sides is guided to converge more towards the central axis, effectively counteracting the natural diffusion of airflow caused by the widening of the nozzle and the increase in working distance, and maintaining the concentration of the hot air bundle and the energy density when it reaches the fabric.

[0042] A smart fabric cutting method based on stress pre-release includes the following steps: The fabric to be cut is laid flat on the fabric table 1. The auxiliary suction cups at both ends of the X-shaped slide rail 11 move and adsorb the fabric to assist in its initial positioning and unfolding. The fabric is flattened by the padding plate 16. The adsorption machine 14 at the corners of the fabric table 1 is activated to firmly adsorb and fix the fabric. The drive unit 12 drives the cutting blade 13 and heating unit 15 assembly to descend. Before the cutting blade 13 contacts the fabric, the ball bearing 23 at the bottom of the spacing adjustment assembly 2 contacts the fabric first. The upward reaction force it receives pushes the limit spring rod 22 and V-shaped plate 24 to move upward. The inclined surface of the V-shaped plate 24 squeezes the inclined block 26, driving the slide rail seat 25 and heating unit 15 to move in opposite directions along the slide groove. This process linearly converts the physical thickness of the fabric into the horizontal spacing between the center lines of the heating units 15 on both sides and the cutting blade 13. After the spacing is adjusted to the correct position, the turntable 211 stops rotating. Under the action of the compression spring 225, the pawl 222 engages in the tooth groove of the ratchet 223, rigidly locking the turntable 211 and the heating machine 15 assembly. The movement of the cooperating block 214 drives the passive gear 34 to roll on the rack plate 33, and drives the bidirectional threaded rod 32 to rotate through the transmission rod 35 and the gear pair. The bidirectional threaded rod 32 drives the two L-shaped baffles 154 to slide in the opposite direction along the limiting rod 31, adjusting the nozzle width between their horizontal ends so that it automatically matches the current heating spacing. After being heated by the heating pipe 153, the airflow generated by the fan 152 is concentrated and ejected at high speed from the nozzle of the widened baffle plate 154 under the guidance and rectification of the arc plate 323. The heating machine 15 starts and blows concentrated hot air into the adaptively adjusted path area. The hot air acts on the fabric on both sides of the cutting blade 13, causing the fibers to relax due to heat and the internal stress to be released in advance. After stress pre-release, the drive motor 12 drives the cutter 13 to descend and rotate. The cutter 13 cuts along the motion system composed of the X-shaped slide rail 11 and the Y-shaped slide rail 10 according to the preset path. After cutting, the drive motor 12 raises the cutting head, the motor 221 starts, pulls the pawl 222 to disengage from the ratchet 223, unlocking it. The reset spring rod 29 pulls the inclined block 26 and the slide rail seat 25 back to their original positions, and the heating machine 15 returns to its initial position, ready for the next work cycle. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many other forms without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. A fabric intelligent cutting device based on stress pre-release, comprising a fabric table (1), characterized in that... The fabric table (1) is provided with a Y-shaped slide rail (10) along its length direction, and an X-shaped slide rail (11) is provided along its width direction and slidably connected to the Y-shaped slide rail (10). A pad plate (16) is installed below the X-shaped slide rail (11). A drive motor (12) is provided on the X-shaped slide rail (11). A cutter (13) is installed at the output end of the drive motor (12). An adsorption machine (14) is provided at the four corners of the fabric table (1) to fix the fabric. Two heating machines (15) are also provided on the drive motor (12) symmetrically distributed on both sides of the cutter (13) to heat the fabric before cutting to release stress. A spacing adjustment component (2), which is mounted on the drive unit (12), is used to adjust the spacing between the two heating units (15) and the cutting blade (13); An air outlet adjustment component (3) is installed on the heater (15) and is used to adjust the air outlet area of ​​the heater (15).

2. The intelligent fabric cutting device based on stress pre-release according to claim 1, characterized in that, The spacing adjustment component (2) includes: The spacing frame (21) is rectangular in shape and is installed at the output end of the drive motor (12). Slide grooves are provided at both ends of the frame. One end of the cutter (13) slides through the middle of the spacing frame (21). Two limiting spring rods (22) slide through the left and right ends of the spacing frame (21) respectively, and baffles (220) are installed at their lower ends. The ball (23) is rolled below the baffle (220); V-shaped plate (24), one end of which is fixedly connected to the top of the limiting spring rod (22); Two slide rail seats (25) are slidably connected in the slide grooves of the spacing frame (21), and the heater (15) is installed below the slide rail seats (25); The inclined block (26) is in the shape of an isosceles triangle and is fixedly installed on the slide rail seat (25), with its inclined surface closely attached to the other side of the V-shaped plate (24); The reset plate (27) is installed on the side of the inclined block (26) away from the V-shaped plate (24); Two sets of fixing plates (28), each set consisting of two plates, are symmetrically installed at the left and right ends of the spacing frame (21); Two sets of reset spring rods (29), two in each set, are symmetrically mounted on the reset plate (27), and their ends slide through the middle of the corresponding fixed plate (28).

3. The intelligent fabric cutting device based on stress pre-release according to claim 2, characterized in that, The spacing adjustment component (2) further includes: Turntable (211) is rotatably connected to the bottom of the spacing frame (21) and is coaxially slidably sleeved on the outside of the cutter (13); A rotating block (212) is fixedly installed in the middle of the turntable (211); Two rotating rods (213) are respectively hinged at one end to the front and rear sides of the rotating block (212); Two mating blocks (214) are slidably connected to the left and right sides of the bottom of the spacing frame (21) via slide rails, respectively. The slide rail seat (25) is fixedly installed on the top of the corresponding mating block (214), and the other end of each rotating rod (213) is hinged to the middle of the mating block (214) on the corresponding side.

4. The intelligent fabric cutting device based on stress pre-release according to claim 3, characterized in that, A motor (221) is mounted below the spacing frame (21) via a motor (221) mount. A pawl (222) is mounted on the output end of the motor (221). A ratchet (223) is coaxially mounted below the turntable (211). A locking plate (224) is also fixedly mounted below the spacing frame (21). A compression spring (225) is connected between the locking plate (224) and the pawl (222). The elastic force of the compression spring (225) causes the pawl (222) to tend to swing toward the ratchet (223) so that it is embedded in the ratchet groove of the ratchet (223).

5. The intelligent fabric cutting device based on stress pre-release according to claim 2, characterized in that, The inclined block (26) is equipped with a miniature ball bearing (261) that can elastically stretch and contract along the direction perpendicular to the inclined surface. The inclined surface of the V-shaped plate (24) near the inclined block (26) is provided with a ball bearing groove (241). The miniature ball bearing (261) is partially embedded in the ball bearing groove (241) and rolls in connection.

6. The intelligent fabric cutting device based on stress pre-release according to claim 2, characterized in that, The heating machine (15) includes: The heating box (151) has a rectangular box structure with an open bottom, and the heating box (151) is installed below the mating block (214); Several fans (152) are arranged and installed along the length of the heating box (151) to generate and deliver airflow downwards; Two baffles (154) are L-shaped and symmetrically distributed on both sides of the bottom opening of the heating box (151).

7. The intelligent fabric cutting device based on stress pre-release according to claim 6, characterized in that, The air outlet regulating component (3) includes: Two sets of limiting rods (31) are symmetrically installed at the rear end of the heating box (151), and one end of the baffle plate (154) is slidably sleeved on the corresponding limiting rod (31); A bidirectional threaded rod (32) is rotatably connected to the middle of the rear end of the heating box (151), and its two threads with opposite directions are respectively threaded to one end of the two baffles (154). The rack plate (33) is fixedly installed on the spacing frame (21); The driven gear (34) is rotatably connected to the mating block (214) and remains engaged with the rack plate (33); The transmission rod (35) has one end fixedly connected to the passive gear (34) and the other end rotates through the mating block (214). The L-shaped plate (36) is fixedly installed at the middle of the rear end of the heating box (151); The first driven gear (37) is rotatably connected to the top of the L-shaped plate (36) and fixedly connected to the end of the transmission rod (35); The second driven gear (38) is rotatably connected to the side wall of the L-shaped plate (36) and meshes with the first driven gear (37). The second driven gear (38) is fixedly connected to the middle part of the bidirectional threaded rod (32).

8. The intelligent fabric cutting device based on stress pre-release according to claim 7, characterized in that, The heating box (151) has inclined fixed sleeve plates (321) hinged to the left and right ends inside. The fixed sleeve plate (321) has a telescopic plate (322) slidably connected to the lower inside. The moving end of the telescopic plate (322) is hinged to one end of the shield plate (154). The heating box (151) has arc plates (323) installed on the left and right ends inside. The arc plates (323) are located above the hinge part of the fixed sleeve plate (321).

9. The intelligent fabric cutting device based on stress pre-release according to claim 8, characterized in that, A rectangular sleeve (331) is installed below the shield (154) and near the movable end of the telescopic plate (322). A gathering plate (332) is slidably connected inside the rectangular sleeve (331). An expansion spring rod (333) is installed inside the rectangular sleeve (331). The front and rear ends of the gathering plate (332) are slidably connected through the rod part of the expansion spring rod (333).

10. A method for intelligent fabric cutting based on stress pre-release, characterized in that: The specific steps of using the intelligent fabric cutting device based on stress pre-release as described in any one of claims 1-9 are as follows: S1. After the fabric is laid out, the auxiliary suction cup and the padding board (16) work together to complete the initial positioning and flattening, and then the four corner suction machine (14) is used to fix it strongly. S2, the ball (23) contacts the fabric, and through the inclined plate (24) and inclined block (26) inclined surface mechanism, the thickness signal is converted into a drive signal, so that the slide rail seat (25) drives the heating machine (15) to move outward at an equal distance; S3. After adjustment, the compression spring (225) pushes the pawl (222) to engage with the ratchet (223), mechanically locking the turntable (211) and the entire heating machine (15) assembly. S4. The movement of the heater (15) is converted into the rotation of the bidirectional threaded rod (32) through the passive gear (34) and rack plate (33), thereby synchronously driving the two baffles (154) to slide in opposite directions and automatically adjusting the nozzle width to match the spacing. S5. The fan (152) and heating pipe (153) generate hot air, which is guided by the arc plate (323) and converged and accelerated on the surface of the fixed sleeve plate (321) to form a concentrated jet. The heating machine (15) accurately blows the concentrated hot air to the fabric on both sides of the cutting knife (13) to pre-release the fabric stress. S6. After the cutter (13) completes the cutting, the drive machine (12) is lifted, the motor (221) unlocks the pawl (222), and the reset spring rod (29) pulls the inclined block (26), the slide rail seat (25) and the heating machine (15) back to the initial position.

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