Post-treatment slitting device and preparation process for knitted fabric

Abstract

The invention discloses a knitted fabric post-processing slitting device and a preparation technology.The knitted fabric post-processing slitting device comprises a workbench, a hot-pressing fixing module, a dynamic cutting module and a control module, a conveying module is arranged on the end face of the workbench, and the hot-pressing fixing module comprises two hot-pressing plates and a first transmission mechanism; a cutting guide opening is formed in the hot pressing plate in a penetrating mode, the hot pressing plate extends along a preset cutting path, the hot pressing plate comprises a heat conduction base body and a temperature regulation and control assembly, the heat conduction base body is provided with a lower pressing face, and the temperature regulation and control assembly comprises two heating units symmetrically distributed along the cutting guide opening. The hot pressing plate can be driven by a first transmission mechanism to be pressed to the surface of fabric to form a hot pressing fixing area, and the dynamic cutting module comprises a cutter body assembly and a second transmission mechanism. According to the technical scheme, the problems of cloth displacement, deformation, unstable cutting and irregular notches in the existing knitted fabric preparation and slitting process are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric processing, and particularly relates to a post-treatment slitting device and preparation process for knitted fabrics. Background Art

[0002] The preparation process of knitted fabrics is a textile technology that forms fabrics by interlooping coils, and has the characteristics of good elasticity, strong air permeability, and soft comfort. The subsequent slitting process after finishing is used to cut wide-width greige fabrics into the required widths or sheet structures for subsequent transportation or further processing (such as garment cutting); and for trimming the finished products to remove the frayed edges and curled edges generated during weaving or shaping to ensure that the fabric edges are neat.

[0003] In the existing slitting process of knitted fabrics, due to the softness of knitted fabrics, they are prone to displacement or deformation during cutting, resulting in uneven cutting and uneven cut edges. In severe cases, the fabric may be damaged, leading to fabric waste and reduced work efficiency. In addition, protruding thread ends and forks often appear at the fabric edges, and if not careful, the cut edges may be damaged, resulting in the unqualified quality of the whole piece of fabric and increasing production costs. Summary of the Invention

[0004] The main object of the present invention is to provide a post-treatment slitting device and preparation process for knitted fabrics, aiming to solve the problems of fabric displacement, deformation, unstable cutting, and uneven cut edges during the preparation and slitting process of current knitted fabrics.

[0005] To achieve the above object, a post-treatment slitting device for knitted fabrics proposed by the present invention includes: A workbench, the end face of the workbench is provided with a transmission module for driving the greige fabric to move; A hot pressing and fixing module, the hot pressing and fixing module is arranged on the workbench, and it includes two hot pressing plates and a first transmission mechanism. A cutting guide opening is provided through the hot pressing plate and extends along a preset cutting path. The hot pressing plate includes a heat conduction matrix and a temperature control component embedded inside the heat conduction matrix. The heat conduction matrix has a lower pressing surface. The temperature control component includes two heating units symmetrically distributed along the cutting guide opening. The hot pressing plate can be driven by the first transmission mechanism to press onto the fabric surface to form a hot pressing and fixing area; A dynamic cutting module, the dynamic cutting module includes a tool body assembly and a second transmission mechanism for driving it to move along the cutting guide opening. The tool body assembly penetrates the fabric during movement to complete cutting; A control module, the control module is configured to coordinate the pressing action of the hot pressing and fixing module and the start-stop timing sequence of the dynamic cutting module.

[0006] In a possible implementation manner, the first transmission mechanism includes: A first support frame, wherein the first support frame is arranged on one side of the workbench; A vertical lifting module, one end of which is connected to the first support frame, and the other end of which is fixedly connected to the hot pressing plate, and is used to drive the hot pressing plate to move up and down in a direction perpendicular to the end surface of the workbench; The first horizontal adjustment module includes a Y-axis driving motor arranged on the workbench, a Y-axis screw rod drivingly connected to the Y-axis driving motor, a Y-axis slide seat threadedly connected to the Y-axis screw rod, and a Y-axis slide rail slidingly connected to the Y-axis slide seat and parallel to the Y-axis screw rod. The bottom of the first support frame is fixedly connected to the Y-axis slide seat, which is used to drive the hot pressing plate to move horizontally along a direction parallel to the length of the workbench to adapt to the positioning of grey cloths of different widths.

[0007] In a possible implementation, the vertical lifting module includes: a first connecting arm, the first connecting arm being connected to the hot pressing plate; a second connecting arm, the second connecting arm being connected to the first supporting frame; The first rotary drive assembly is arranged between the first connecting arm and the second connecting arm, and includes a rotating shaft connected to the first connecting arm and a rotating motor connected to the rotating shaft, and is used to drive the hot pressing plate to rotate around the axis of the rotating shaft so that its lower pressing surface is tilted and pressed to the surface of the grey cloth.

[0008] In a possible implementation, the blade assembly includes: A titanium alloy cutter head, wherein the shape of the titanium alloy cutter head is adapted to the cutting guide path; An ultrasonic transducer, the output end of which is connected to the titanium alloy cutter head; An amplitude modulator, the amplitude modulator is electrically connected to the ultrasonic transducer and is configured to adjust the vibration amplitude of the titanium alloy cutter head; The second transmission mechanism has the same structure as the first transmission mechanism, and the second transmission mechanism is fixedly connected to the ultrasonic transducer.

[0009] In a possible implementation, the blade assembly includes: Laser cutting head, used to generate high-energy laser beam to cut the grey cloth; The auxiliary gas nozzle is arranged beside the laser cutting head and is used for spraying inert gas to the cutting area to cool the cut seam and remove slag.

[0010] In a possible implementation manner, the second transmission mechanism includes: A second support frame, the second support frame is arranged on the other side of the workbench; A second horizontal adjustment module, which is arranged between the second support frame and the workbench to drive the second support frame to move horizontally in a direction parallel to the end face of the workbench; A second rotation drive assembly, which is arranged at the top of the second support frame, and its output end is connected with a third connecting arm; A third rotation drive assembly, which is arranged at the end of the third connecting arm, and its output end is connected with a fourth connecting arm; Wherein, the end of the fourth connecting arm is connected with the tool body assembly.

[0011] To achieve the above object, the present invention also provides a preparation process for knitted fabrics, which is applied to the post-treatment slitting device described in any one of the above possible embodiments, and includes the following steps: S1: Weave the raw materials on the machine to obtain a knitted fabric blank; S2: Predetermine the knitted fabric blank, wind it onto the transmission module of the slitting device with a constant tension, and set the slitting path parameters through the control module; S3: Start the hot pressing and fixing module, adjust the horizontal positions of the two hot pressing plates to both sides of the preset cutting path through the first transmission mechanism, synchronously drive the vertical lifting module to press the hot pressing plates down to the surface of the blank, and heat the pressing surface to a preset temperature through the temperature control component to form a hot pressing and fixing area; S4: The control module activates the dynamic cutting module, drives the tool body assembly to move along the cutting guide opening according to the path trajectory of the cutting guide opening, and penetrates the blank through the tool body assembly to complete the slitting; During the slitting process, the control module adjusts the temperature of the hot pressing and fixing area and the moving speed of the tool body assembly in real time to ensure the stability of the cutting path; After the slitting is completed, the hot pressing plates are reset and stop heating, the transmission module drives the slit blank to move out of the workbench, and the next slitting cycle is executed cyclically.

[0012] In a possible implementation manner, the detailed steps of S3 and S4 are: S3a: Call the preset temperature-pressure mapping table according to the material composition of the knitted fabric blank to determine the initial hot pressing temperature T and the downward pressure P; S3b: Drive the horizontal adjustment module through the Y-axis drive motor to make the distance between the hot pressing plates match the target slitting width of the blank; synchronously start the rotation motor of the vertical lifting module to make the hot pressing plates rotate around the rotating shaft to determine the target slitting shape of the blank; S3c: Press down to a position 2 mm away from the surface of the blank, and the heating unit heats up to 0.8T for pre-pressing; Slowly press and combine, and at the same time the temperature rises to T and the pressure linearly increases to P; Maintain the T state for 3 - 5 seconds to make the melting depth of the surface fibers of the fabric reach 0.1 - 0.3 mm; S4a: According to the tilt angle of the hot pressing plate, control the second transmission mechanism to drive the tool body assembly to move along the cutting guide opening; Laser cutting mode: Start the laser generator, adjust the focus to make the spot diameter reach 0.1 - 0.3 mm, synchronously turn on the auxiliary gas nozzle to spray nitrogen, and move along the cutting guide opening for cutting; Ultrasonic cutting mode: Control the ultrasonic transducer to generate vibrations of 20 - 40 kHz, the titanium alloy tool head contacts the fabric, and cut along the path of the guide opening.

[0013] The technical solution of the present invention can ensure the stability of the fabric before cutting through the heating and pressure effects of the hot pressing and fixing module, reducing the defects and wrinkles at the edges of the fabric; while the dynamic cutting module ensures the neatness and smoothness of the cutting opening through precise control of the tool body, reducing the loss and waste of the fabric. It effectively solves the problems of fabric displacement, deformation, unstable cutting, and uneven cutting edges encountered in the process of cutting traditional knitted fabrics. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the theme of the present invention; Figure 2 It is a schematic diagram of the cooperation between the first transmission mechanism and the hot pressing plate of the present invention; Figure 3 It is a schematic diagram of the structure of another embodiment of the theme of the present invention; Figure 4 It is a schematic diagram of the structure from another perspective of another embodiment of the theme of the present invention.

[0016] Explanation of the reference numerals in the drawings: 1. Workbench; 11. Transmission module; 2. Hot pressing plate; 21. Heat conduction matrix; 22. Heating unit; 23. Cutting guide opening; 3. First transmission mechanism; 31. First support frame; 32. Vertical lifting module; 321. First connecting arm; 322. Second connecting arm; 323. First rotation drive assembly; 3231. Rotating shaft; 3232. Rotating motor; 33. First horizontal adjustment module; 331. Y-axis drive motor; 332. Y-axis lead screw; 333. Y-axis slide rail; 334. Y-axis slide block; 4. Tool body assembly; 41. Titanium alloy tool tip; 42. Ultrasonic transducer; 43. Amplitude modulator; 44. Laser cutting head; 45. Auxiliary gas nozzle; 5. Second transmission mechanism; 51. Second support frame; 52. Second horizontal adjustment module; 53. Second rotation drive assembly; 54. Third rotation drive assembly; 55. Third connecting arm; 56. Fourth connecting arm.

[0017] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0018] In order to make the object, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0019] Embodiment 1

[0020] In view of the problems in the background art, the present invention provides a post-treatment cutting device for knitted fabrics, including: A workbench 1, the end face of the workbench 1 is provided with a transmission module 11 for driving the embryo fabric to move; A hot pressing and fixing module, the hot pressing and fixing module is arranged on the workbench 1, and it includes two hot pressing plates 2 and a first transmission mechanism 3. A cutting guide opening 23 is provided through the hot pressing plate 2 and extends along a preset cutting path. The hot pressing plate 2 includes a heat conduction matrix 21 and a temperature control component embedded inside the heat conduction matrix 21. The heat conduction matrix 21 has a lower pressing surface. The temperature control component includes two heating units 22 symmetrically distributed along the cutting guide opening 23. The hot pressing plate 2 can be driven by the first transmission mechanism 3 to press onto the fabric surface to form a hot pressing and fixing area; A dynamic cutting module, the dynamic cutting module includes a tool body assembly 4 and a second transmission mechanism 5 for driving it to move along the cutting guide opening 23. The tool body assembly 4 penetrates the fabric during the movement to complete cutting; A control module, the control module is configured to coordinate the pressing action of the hot pressing and fixing module and the start-stop timing of the dynamic cutting module.

[0021] Combined with reference to Figures 1 to 4As shown, in this embodiment, the workbench 1 adopts a double-layer composite structure. The main body is composed of an aluminum alloy platform supported by a welded steel frame, and the surface is covered with a high-temperature resistant silicone pad. The transmission module 11 consists of multiple groups of independently driven rubber roller shafts. Through the cooperation of a servo motor and an encoder, precise transmission of the fabric is achieved. This module can ensure that when processing soft knitted fabrics, the fabric does not slip or misalign, ensuring that the fabric moves smoothly and evenly along the preset path during the slitting process, thereby avoiding problems such as inaccurate cutting caused by fabric deviation or wrinkles.

[0022] On the end face of the workbench 1, there is a hot pressing and fixing module. It adopts a split design, including two hot pressing plates 2 and a first transmission mechanism 3 that individually drives each hot pressing plate 2 to work. Among them, the heat conductor matrix is a copper-aluminum composite matrix, ensuring rapid and uniform heat conduction to the entire pressing surface. The lower pressing surface is polished to a mirror finish and plated with hard chromium to reduce friction and adhesion with the fabric, while enhancing wear resistance. A cutting guide opening 23 is provided on the heat conductor matrix. It adopts a narrow slit design and extends along the preset cutting path. The length can be adjusted according to the fabric width by replacing different hot pressing plates 2. And a heating unit 22 is provided inside the heat conductor matrix. The heating unit 22 can be a U-shaped nickel-chromium alloy heating tube, a PTC ceramic heating sheet, etc. embedded inside, and is distributed in a strip shape along both sides of the cutting guide opening 23, concentrating the heat near the cutting path to avoid fabric damage caused by overheating. And the temperature control component adopts PID temperature control + infrared real-time feedback, keeping the temperature of the pressing surface stable at 80 - 120 °C (automatically adjusted according to the fabric composition). This can not only soften the fibers to enhance the cutting effect but also prevent thermal damage. Specifically, during the fabric transmission process, the hot pressing and fixing module precisely hot presses and fixes the fabric through two symmetrically distributed hot pressing plates 2. When the lower pressing surface contacts the fabric, the temperature control component automatically adjusts the temperature of the heating unit 22 to the range of 80 - 120 °C according to the fabric composition (such as the spandex content). This temperature can moderately soften the fiber surface without damaging the substrate, forming a local melting and bonding effect in the hot pressing and fixing area to temporarily fix the fabric fibers at the microscopic level.

[0023] The dynamic cutting module includes a knife assembly 4 and a second transmission mechanism 5 that drives it to move along the cutting guide port 23. The knife assembly 4 can be a high-frequency vibration tungsten steel blade, an ultrasonic cutting tool, a laser cutting head, etc., and adopts a dynamic cutting method. In conjunction with the above-mentioned hot pressing and fixing module, the knife body can ensure that the cloth does not appear excessively pulled or shaken during the cutting process, and eliminate the longitudinal wrinkles caused by mechanical pulling, so as to effectively prevent the problems of rough edges, forks or unevenness of the cloth cut. The control module is responsible for coordinating the operation of each module to ensure that the start and stop timing of the hot pressing and fixing module and the dynamic cutting module is accurate. By accurately controlling the timing of each process, quality problems caused by improper operation can be avoided. Specifically, the control module needs to ensure the smooth connection and timing accuracy of processes such as hot pressing and fixing, cutting movement, cooling and shaping, so as to ensure that the cloth remains stable during the cutting process and that the processes do not interfere with each other.

[0024] In a possible implementation manner, the first transmission mechanism 3 includes: A first support frame 31, wherein the first support frame 31 is disposed on one side of the workbench 1; A vertical lifting module 32, one end of which is connected to the first support frame 31, and the other end of which is fixedly connected to the hot pressing plate 2, and is used to drive the hot pressing plate 2 to move up and down in a direction perpendicular to the end surface of the workbench 1; The first horizontal adjustment module 33 includes a Y-axis driving motor 331 arranged on the workbench 1, a Y-axis screw rod 332 drivingly connected to the Y-axis driving motor 331, a Y-axis slide 334 threadedly connected to the Y-axis screw rod 332, and a Y-axis slide rail 333 slidably connected to the Y-axis slide 334 and parallel to the Y-axis screw rod 332. The bottom of the first support frame 31 is fixedly connected to the Y-axis slide 334, which is used to drive the hot pressing plate 2 to move horizontally along a length direction parallel to the workbench 1 to adapt to the positioning of grey cloths of different widths.

[0025] Combined with reference Figure 1 and Figure 2As shown, in this embodiment, two sets of first drive mechanisms 3 are provided on one side of the workbench 1 to drive two sets of hot pressing plates 2 respectively. Among them, the first support frame 31, as the basic load-bearing structure, adopts a high-strength aluminum alloy frame and combines the design of internal honeycomb-shaped reinforcing ribs to ensure its excellent load-bearing capacity and stability. Its bottom is rigidly connected to the horizontal adjustment module through a flange, and a cantilever beam structure extends from the top to support the entire vertical lifting module 32. The vertical lifting module 32 is connected to the side of the first support frame 31 through a lifting structure (such as a linear motion module, a hydraulic device or a pneumatic device), so as to realize the precise lifting control of the vertical lifting module 32 relative to the first support frame 31. Since the other end of the vertical lifting module 32 is connected to the hot pressing plate 2, through this module, the hot pressing plate 2 can be precisely adjusted to an appropriate height, so that the fabric can be evenly stressed during the hot pressing process, avoiding deformation of the fabric or uneven pressure distribution caused by uneven lifting.

[0026] In addition, the extending direction of the slide rail of the first horizontal adjustment module 33 is parallel to the conveying direction of the embryo cloth, and the hot pressing plate 2 can be precisely adjusted in the horizontal direction to adapt to embryo cloths of different widths. This module includes a Y-axis drive motor 331 arranged on the workbench 1, a Y-axis lead screw 332 connected to the motor, a Y-axis slide 334 threadedly connected to the Y-axis lead screw 332, and a Y-axis slide rail 333 slidably connected to the Y-axis slide 334 and parallel to the Y-axis lead screw 332. The Y-axis drive motor 331 provides a power source through the connection with the Y-axis lead screw 332, so that the Y-axis lead screw 332 can rotate and drive the Y-axis slide 334 to move horizontally along the Y-axis slide rail 333. Since the Y-axis slide rail 333 is parallel to the Y-axis lead screw 332, the slide can slide smoothly in the length direction of the workbench 1, so as to realize the horizontal position adjustment of the hot pressing plate 2.

[0027] In a possible implementation manner, the vertical lifting module 32 includes: A first connecting arm 321, and the first connecting arm 321 is connected to the hot pressing plate 2; A second connecting arm 322, and the second connecting arm 322 is connected to the first support frame 31; A first rotation drive assembly 323, and the first rotation drive assembly 323 is arranged between the first connecting arm 321 and the second connecting arm 322, and includes a rotating shaft 3231 connected to the first connecting arm 321 and a rotating motor 3232 drivingly connected to the rotating shaft 3231, and is used for driving the hot pressing plate 2 to rotate around the axis of the rotating shaft 3231 so that the lower pressing surface is inclined and pressed against the surface of the embryo cloth.

[0028] With reference to Figure 1 and Figure 2As shown, in this embodiment, the vertical lifting module 32 is composed of a first connecting arm 321, a second connecting arm 322, and a first rotary drive assembly 323. Both the first connecting arm 321 and the second connecting arm 322 adopt robotic arm mechanisms. Among them, the first connecting arm 321 is forged from titanium alloy and is rigidly connected to the outer wall of the hot pressing plate 2 through a flange. A temperature sensor is embedded inside it to monitor the working state of the hot pressing plate 2 in real time; the second connecting arm 322 adopts a hollow rectangular steel pipe structure and forms an adjustable connection with the first support arm through a high-strength bolt group. Servo motor power cables are arranged inside it. The first rotary drive assembly 323 further includes a harmonic reducer, an absolute encoder, and a rotating shaft 3231. The two ends of the rotating shaft 3231 are supported in the bearing seats of the second connecting arm 322 through angular contact bearings, and the rotating motor adopts a hollow shaft direct drive type servo motor. When the system works, the control module drives the rotating assembly according to the slitting fabric control signal to adjust the inclination angle of the hot pressing plate 2, and then realizes the precise lifting and hot pressing of the Z-axis stroke through the linear lifting unit, which can cooperate with the dynamic cutting module to cut out the blank fabric of the required size and shape.

[0029] In a possible implementation manner, the tool body assembly 4 includes: A titanium alloy tool head 41, and the shape of the titanium alloy tool head 41 is adapted to the path of the cutting guide opening 23; An ultrasonic transducer 42, and the output end of the ultrasonic transducer 42 is connected to the titanium alloy tool head 41; An amplitude modulator 43, and the amplitude modulator 43 is electrically connected to the ultrasonic transducer 42 and is configured to adjust the vibration amplitude of the titanium alloy tool head 41; Among them, the structure of the second transmission mechanism 5 is the same as that of the first transmission mechanism 3, and the second transmission mechanism 5 is fixedly connected to the ultrasonic transducer 42.

[0030] Combined with reference to Figure 1 and Figure 2As shown, in this embodiment, the structure of the second transmission mechanism 5 is the same as that of the first transmission mechanism 3 above, and the Y-axis drive motor 331 of the second transmission mechanism 5 shares the same control signal source with the first transmission mechanism 3 to ensure the horizontal movement synchronization of the hot pressing and fixing module and the dynamic cutting module. Specifically, two first transmission mechanisms 3 are arranged on one side of the workbench 1, while the second transmission mechanism 5 is arranged on the other side of the workbench 1. The tool body assembly 4 is the core execution unit of the dynamic cutting module. Among them, the titanium alloy tool head 41 has a 20° double-sided edge angle design at its cutting edge, which forms a precise fit with the narrow slot structure of the cutting guide opening 23. The ultrasonic transducer 42 converts electrical energy into ultrasonic vibration energy and is connected to the titanium alloy tool head 41 through its output end. When the transducer works, it will excite the tool head to perform high-frequency vibration. The amplitude modulator 43 is electrically connected to the ultrasonic transducer 42 to adjust the vibration amplitude of the titanium alloy tool head 41. By adjusting the vibration amplitude, the amplitude modulator 43 can flexibly adjust the vibration intensity of the tool head according to the characteristics of different materials and cutting requirements, so as to achieve a more precise and efficient cutting process.

[0031] Embodiment 2

[0032] The difference between this embodiment and Embodiment 1 lies in the structures of the tool body assembly 4 and the second transmission mechanism 5. Specifically, the tool body assembly 4 includes: A laser cutting head 44 for generating a high-energy laser beam to cut the blank fabric; An auxiliary gas nozzle 45 arranged beside the laser cutting head 44 for spraying an inert gas into the cutting area to cool the cutting seam and remove slag.

[0033] With reference to Figure 3 and Figure 4 As shown, in this embodiment, the laser cutting head 44 performs cutting by exciting a high-energy laser beam. Through the precise focusing of the laser beam, it can ensure high precision while avoiding material deformation and irregular cut edges. The auxiliary gas nozzle 45 is arranged coaxially with the laser beam, and the inert gas is sprayed into the cutting area through an electromagnetic valve. Usually, inert gases such as nitrogen or carbon dioxide are used. The sprayed gas not only helps to cool the high-temperature cutting seam generated during the laser cutting process, avoiding unnecessary damage to the material caused by overheating, but also can remove the slag generated during the laser cutting process, avoiding secondary adhesion. In addition, it can isolate oxygen to prevent the fabric from carbonizing.

[0034] In a possible implementation manner, the second transmission mechanism 5 includes: A second support frame 51, and the second support frame 51 is arranged on the other side of the workbench 1; A second horizontal adjustment module 52, and the second horizontal adjustment module 52 is arranged between the second support frame 51 and the workbench 1 to drive the second support frame 51 to move horizontally along a direction parallel to the end face of the workbench 1; A second rotation driving assembly 53 is provided at the top of the second support frame 51, and a third connecting arm 55 is connected to the output end thereof; A third rotation driving assembly 54 is provided at the end of the third connecting arm 55, and a fourth connecting arm 56 is connected to the output end thereof; Wherein, the end of the fourth connecting arm 56 is connected to the tool body assembly 4.

[0035] With reference to Figure 3 and Figure 4 As shown, in this embodiment, the second transmission mechanism 5 adopts a multi-degree-of-freedom robotic arm system to achieve precise positioning of the tool body assembly 4 in three-dimensional space. This mechanism is a serial robotic arm structure, mainly composed of a second support frame 51, a second horizontal adjustment module 52, a second rotation driving assembly 53, and a third rotation driving assembly 54. The second support frame 51 is made of welded steel structure, and the bottom is connected to the workbench 1 through the second horizontal adjustment module 52 with the same structure as the first horizontal adjustment module 33. The structures of the second rotation driving assembly 53 and the third rotation driving assembly 54 are the same as those of the first rotation driving assembly 323. The second rotation driving assembly 53 is installed on the top of the second support frame 51, and its rotating shaft 3231 is connected to the third connecting arm 55 to control the rotational movement of the third connecting arm 55, thereby realizing the angle adjustment of the tool body assembly 4. Through this rotation driving assembly, the tool body assembly 4 can rotate within a certain angle range, thereby realizing complex cutting paths and meeting different cutting requirements. The third rotation driving assembly 54 is located at the end of the third connecting arm 55, and its output rotating shaft 3231 is connected to the fourth connecting arm 56. This driving assembly further transmits the rotational torque, enabling the entire transmission system to achieve a larger range of rotation control and increasing the degrees of freedom of movement of the tool body assembly 4. During fine cutting, the angle and position of the tool body assembly 4 can be adjusted according to requirements, thereby ensuring that the cutting effect reaches the best state. The other structures and effects of this embodiment are the same as those of Embodiment 1 and will not be elaborated here.

[0036] The present invention also proposes a preparation process for knitted fabrics, which is applied to the post-treatment slitting device for knitted fabrics described in any of the above embodiments, and includes the following steps: S1: Weaving the raw materials on the machine to obtain a knitted fabric blank; S2: Predetermining the shape of the knitted fabric blank, winding it onto the transmission module 11 of the slitting device with a constant tension, and setting the slitting path parameters through the control module; S3: Starting the hot pressing and fixing module, adjusting the horizontal positions of the two hot pressing plates 2 to both sides of the preset cutting path through the first transmission mechanism 3, synchronously driving the vertical lifting module 32 to lower the hot pressing plates 2 onto the surface of the blank, and heating the lower pressing surface to a preset temperature through the temperature control component to form a hot pressing and fixing area; S4: The control module activates the dynamic cutting module, drives the tool body assembly 4 to move along the path of the cutting guide port 23 according to the path trajectory of the cutting guide port 23, and penetrates the base fabric through the tool body assembly 4 to complete the slitting; During the slitting process, the control module adjusts the temperature of the hot pressing and fixing area and the moving speed of the tool body assembly 4 in real time to ensure the stability of the cutting path; After the slitting is completed, the hot pressing plate 2 resets and stops heating, and the transmission module 11 drives the slit base fabric out of the workbench 1 and cycles to execute the next slitting cycle.

[0037] In a possible implementation manner, the detailed steps of S3 and S4 are as follows: S3a: Call the preset temperature-pressure mapping table according to the material composition of the base fabric of the knitted fabric to determine the initial hot pressing temperature T and the lower pressure P; S3b: Drive the horizontal adjustment module through the Y-axis drive motor 331 to make the distance between the hot pressing plates 2 match the target slitting width of the base fabric; Synchronously start the rotation motor 3232 of the vertical lifting module 32 to make the hot pressing plate 2 rotate around the rotating shaft 3231 to determine the target slitting shape of the base fabric; Press down to a position 2 mm away from the surface of the base fabric, and the heating unit 22 heats up to 0.8T for pre-pressing; Press and fit slowly, while the temperature rises to T and the pressure linearly increases to P; Maintain the T state for 3 - 5 seconds to make the melting depth of the surface layer fibers of the fabric reach 0.1 - 0.3 mm; S4a: Control the second transmission mechanism 5 to drive the tool body assembly 4 to move along the cutting guide port 23 according to the inclination angle of the hot pressing plate 2; Laser cutting mode: Start the laser generator, focus to make the spot diameter reach 0.1 - 0.3 mm, synchronously open the auxiliary gas nozzle 45 to spray nitrogen, and move along the cutting guide port 23 for cutting; Ultrasonic cutting mode: Control the ultrasonic transducer 42 to generate vibrations of 20 - 40 kHz, the titanium alloy tool head 41 contacts the fabric, and cut along the path of the guide port.

[0038] Specifically, there is an inclination state locking mechanism between the rotation and inclination stage and the vertical pressing stage. The electromagnetic brake clamps the rotating shaft 3231 after the rotation angle is in place to lock the torque; The pneumatic plug pin is inserted into the positioning hole array of the second connecting arm 322 to form a mechanical hard limit.

[0039] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A post-processing slitting device for knitted fabrics, characterized in that: include: A workbench, wherein the end surface of the workbench is provided with a transmission module for driving the grey cloth to move; A hot pressing and fixing module, the hot pressing and fixing module is arranged on the workbench, and comprises two hot pressing plates and a first transmission mechanism, the hot pressing plates are provided with a cutting guide opening extending along a preset cutting path, the hot pressing plates comprise a heat conducting substrate and a temperature regulating component embedded in the heat conducting substrate, the heat conducting substrate has a lower pressing surface, the temperature regulating component comprises two heating units symmetrically distributed along the cutting guide opening, the hot pressing plates can be driven by the first transmission mechanism to be pressed to the surface of the fabric to form a hot pressing and fixing area; A dynamic cutting module, the dynamic cutting module comprising a knife assembly and a second transmission mechanism driving the knife assembly to move along the cutting guide opening, the knife assembly penetrating the fabric to complete the cutting during the movement; A control module is configured to coordinate the pressing action of the hot pressing and fixing module with the start and stop timing of the dynamic cutting module.

2. The post-processing slitting device for knitted fabrics according to claim 1, characterized in that: The first transmission mechanism comprises: A first support frame, wherein the first support frame is arranged on one side of the workbench; A vertical lifting module, one end of which is connected to the first support frame, and the other end of which is fixedly connected to the hot pressing plate, and is used to drive the hot pressing plate to move up and down in a direction perpendicular to the end surface of the workbench; The first horizontal adjustment module includes a Y-axis driving motor arranged on the workbench, a Y-axis screw rod drivingly connected to the Y-axis driving motor, a Y-axis slide seat threadedly connected to the Y-axis screw rod, and a Y-axis slide rail slidingly connected to the Y-axis slide seat and parallel to the Y-axis screw rod. The bottom of the first support frame is fixedly connected to the Y-axis slide seat, which is used to drive the hot pressing plate to move horizontally along a direction parallel to the length of the workbench to adapt to the positioning of grey cloths of different widths.

3. The post-processing slitting device for knitted fabrics according to claim 2, characterized in that: The vertical lifting module comprises: a first connecting arm, the first connecting arm being connected to the hot pressing plate; a second connecting arm, the second connecting arm being connected to the first supporting frame; The first rotary drive assembly is arranged between the first connecting arm and the second connecting arm, and includes a rotating shaft connected to the first connecting arm and a rotating motor connected to the rotating shaft, and is used to drive the hot pressing plate to rotate around the axis of the rotating shaft so that its lower pressing surface is tilted and pressed to the surface of the grey cloth.

4. The post-processing slitting device for knitted fabrics according to claim 1, characterized in that: The blade assembly comprises: A titanium alloy cutter head, wherein the shape of the titanium alloy cutter head is adapted to the cutting guide path; An ultrasonic transducer, the output end of which is connected to the titanium alloy cutter head; An amplitude modulator, the amplitude modulator is electrically connected to the ultrasonic transducer and is configured to adjust the vibration amplitude of the titanium alloy cutter head; The second transmission mechanism has the same structure as the first transmission mechanism, and the second transmission mechanism is fixedly connected to the ultrasonic transducer.

5. The post-processing slitting device for knitted fabrics according to claim 1, characterized in that: The blade assembly comprises: Laser cutting head, used to generate high-energy laser beam to cut the grey cloth; The auxiliary gas nozzle is arranged beside the laser cutting head and is used for spraying inert gas to the cutting area to cool the cut seam and remove slag.

6. The post-processing slitting device for knitted fabrics according to claim 5, characterized in that: The second transmission mechanism comprises: A second support frame, the second support frame is arranged on the other side of the workbench; A second horizontal adjustment module, the second horizontal adjustment module is arranged between the second support frame and the workbench to drive the second support frame to move horizontally in a direction parallel to the end surface of the workbench; A second rotation driving assembly, wherein the second rotation driving assembly is disposed on the top of the second support frame, and an output end of the second rotation driving assembly is connected to a third connecting arm; A third rotation driving assembly, the third rotation driving assembly is arranged at the end of the third connecting arm, and an output end thereof is connected to the fourth connecting arm; Wherein, the end of the fourth connecting arm is connected to the blade body assembly.

7. A process for preparing knitted fabrics, applied to the post-processing slitting device for knitted fabrics as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1: putting the raw materials on a weaving machine to obtain a knitted fabric; S2: pre-forming the knitted fabric grey cloth, winding it to the transmission module of the slitting device with constant tension, and setting the slitting path parameters through the control module; S3: Start the hot pressing and fixing module, adjust the horizontal positions of the two hot pressing plates to the two sides of the preset cutting path through the first transmission mechanism, synchronously drive the vertical lifting module to press the hot pressing plates down to the surface of the grey cloth, and heat the lower pressing surface to the preset temperature through the temperature control component to form a hot pressing and fixing area; S4: The control module activates the dynamic cutting module, drives the knife assembly to move along the cutting guide opening according to the path trajectory of the cutting guide opening, and completes the slitting by the knife assembly penetrating the grey cloth; During the slitting process, the control module adjusts the temperature of the hot pressing fixed area and the moving speed of the knife assembly in real time to ensure the stability of the cutting path; After slitting is completed, the hot pressing plate is reset and stops heating. The transmission module drives the slit grey cloth out of the workbench and circulates to execute the next slitting cycle.

8. The process for preparing the knitted fabric according to claim 7, characterized in that: The detailed steps of S3 and S4 are: S3a: calling a preset temperature-pressure mapping table according to the material composition of the knitted fabric to determine the initial hot pressing temperature T and the downward pressure P; S3b: Drive the horizontal adjustment module through the Y-axis drive motor to make the distance between the hot pressing plates match the target slitting width of the grey cloth; synchronously start the rotary motor of the vertical lifting module to rotate the hot pressing plate around the rotating shaft to determine the target slitting shape of the grey cloth; S3c: Press down to a position 2mm from the surface of the grey cloth, and heat the heating unit to 0.8T for pre-pressing; Slow pressing, while the temperature rises to T and the pressure increases linearly to P; Maintain the T state for 3-5 seconds to make the surface fiber melting depth of the fabric reach 0.1-0.3mm; S4a: controlling the second transmission mechanism to drive the cutter assembly to move along the cutting guide opening according to the inclination angle of the hot pressing plate; Laser cutting mode: Start the laser generator, adjust the focus so that the spot diameter reaches 0.1-0.3mm, open the auxiliary gas nozzle to spray nitrogen synchronously, and move along the cutting guide to cut; Ultrasonic cutting mode: Control the ultrasonic transducer to generate 20-40kHz vibration, the titanium alloy blade contacts the fabric, and cuts along the guide path.

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