Automatic material cutting and roll changing device

Abstract

The utility model discloses an automatic material cutting and roll changing device and method, and belongs to the field of textile machinery automation. The automatic material cutting and roll changing device comprises a conveying platform, a mechanical arm clamping jaw mechanism used for clamping a finished cloth roll or an empty rod core is arranged on the rear side of the conveying platform, and a shearing area is arranged in front of the mechanical arm clamping jaw mechanism; a movable shearing mechanism used for cutting cloth is arranged in the shearing area, a buffer area used for containing finished cloth rolls is arranged behind the shearing area, a containing area used for containing replaced empty rod cores is arranged in front of the shearing area, a cloth falling area is arranged between the containing area and the shearing area, and cut cloth leftovers are located in the cloth falling area. The mechanical arm clamping jaw mechanism is provided with a twisting mechanism used for rotating a finished cloth roll or an empty rod core. Through cooperative operation of the mechanical arm clamping jaw mechanism and the shearing mechanism, in combination with the spatial layout of the cropping area and the placement area, automatic operation of the cloth cutting and roll changing process is achieved, manual intervention is reduced, and the advantages of improving the cutting precision, the roll changing efficiency and the automation degree are achieved.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery automation, and in particular to an automatic material cutting and roll changing device. Background Technology

[0002] Circular knitting machines, as important production equipment in the textile industry, are technically known as circular weft knitting machines or circular knitting roll machines. With the development of my country's textile industry towards clustering, the demand for automation in production is increasing. In the traditional production process, after the circular knitting machine completes weaving, the double-layered fabric continues to wind around the rolls. When the rolls are full, the machine needs to be stopped for manual operation. Workers must manually perform a series of operations, including opening the door, cutting the fabric, moving the rolls, and changing empty rolls. This manual intervention not only leads to a cumbersome process but also results in low production efficiency and high labor intensity. Especially in the fabric cutting and roll changing stages, manual operation makes it difficult to guarantee cutting accuracy and roll changing efficiency, easily causing fabric waste and production interruptions. Furthermore, traditional methods lack effective positioning and fixing methods during the connection of the fabric end and the empty roll core, easily leading to problems such as uneven winding or fabric end detachment. Existing technology urgently needs improvement. Utility Model Content

[0003] The purpose of this application is to provide an automatic material cutting and roll changing device and its usage method, which has the advantages of improving cutting accuracy, roll changing efficiency and automation.

[0004] This application provides an automatic material cutting and roll changing device, the technical solution of which is as follows:

[0005] The system includes a transport platform, with a robotic arm gripper mechanism at the rear for gripping finished fabric rolls or empty cores. A cutting zone is located in front of the robotic arm gripper mechanism, containing a movable cutting mechanism for cutting the fabric. A buffer zone for placing finished fabric rolls is located behind the cutting zone, and a placement zone for placing replacement empty cores is located in front of the cutting zone. A fabric dropping zone is located between the placement zone and the cutting zone, with the cut fabric ends located in the fabric dropping zone. The robotic arm gripper mechanism is equipped with a rubbing mechanism for rotating the finished fabric rolls or empty cores.

[0006] Furthermore, this application also proposes that a rubber mat is provided in the fabric application area.

[0007] Furthermore, this application also proposes that a baffle plate is provided on the side of the placement area away from the fabric drop area, and a placement groove is formed between the baffle plate and the rubber pad, in which the empty rod core is placed.

[0008] Furthermore, this application also proposes that the robotic arm gripper mechanism is equipped with a graphic viewing device, and a graphic mark is provided in the placement area, the graphic viewing device being used to identify the graphic mark.

[0009] Furthermore, this application also proposes that the graphics viewing device includes a camera module and a fill light module.

[0010] Furthermore, this application also proposes that an adhesive layer be provided on the surface of the hollow rod core, which can be bonded to the fabric end.

[0011] Furthermore, this application also proposes that the adhesive layer be Velcro.

[0012] As can be seen from the above, the automatic material cutting and roll changing device and method provided in this application, through the coordinated operation of the robotic arm gripper mechanism and the shearing mechanism, combined with the spatial layout of the fabric dropping area and the placement area, realizes the automated operation of the fabric cutting and roll changing process, reduces manual intervention, and has the advantages of improving cutting accuracy, roll changing efficiency and automation level. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the automatic material cutting and roll changing device before cutting;

[0014] Figure 2 This is a schematic diagram of the structure after cutting by the automatic material cutting and roll changing device;

[0015] Figure 3 This is a schematic diagram of the structure when the hollow core is lifted upwards;

[0016] Figure 4 This is a schematic diagram of the structure when the hollow core fabric head is pressed downwards;

[0017] Figure 5 This is a schematic diagram of the structure when the empty core is returned to the large circular milling machine;

[0018] In the picture:

[0019] 1. Transport platform; 2. Robotic arm gripper mechanism; 3. Shearing area; 4. Shearing mechanism; 5. Buffer area; 6. Placement area; 7. Empty core; 8. Fabric dropping area; 9. Twisting mechanism; 10. Rubber pad; 11. Side guard plate; 12. Placement groove; 14. Fabric. Detailed Implementation

[0020] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The technical solution of this utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] In existing technologies, circular knitting machines are widely used in the textile industry, and the traditional workflow relies on manual changes of fabric rolls. When the fabric rolls are full of fabric, the machine must stop and wait for workers to manually cut the fabric, move the rolls, and install empty rolls, resulting in production interruptions, low efficiency, and high labor intensity. Especially in large-scale cluster production scenarios, frequent manual roll changes trigger machine shutdowns, creating a bottleneck in production capacity.

[0023] To address the aforementioned issues, the R&D team observed three core pain points in manual operation: the roll-changing process involves multi-step coordination, fabric cutting and end-bonding require precise positioning, and the empty core 7 and finished fabric rolls need to be used interchangeably quickly. Multiple on-site investigations revealed that the existing equipment lacked integrated functional zones, resulting in fragmented processes. By introducing a modular layout approach, functional areas such as robotic arm gripping, fabric cutting, and empty core 7 preparation are arranged longitudinally along the production line, achieving spatial continuity of the processes. Specifically addressing the end-positioning challenge, a fabric drop area 8 design combining gravity guidance and mechanical assistance is adopted to ensure automatic return of the fabric end after cutting.

[0024] Therefore, this application proposes an automatic fabric cutting and roll changing device, comprising a transport platform 1, a robotic arm gripper mechanism 2 with a rubbing mechanism 9 installed at the rear of the platform, a cutting zone 3, a fabric dropping zone 8, and a placement zone 6 arranged sequentially at the front, and a buffer zone 5 installed at the rear. The cutting zone 3 is equipped with a movable cutting mechanism 4, the placement zone 6 stores empty core rods 7, the buffer zone 5 temporarily stores finished fabric rolls, and the fabric dropping zone 8 receives the cut fabric ends.

[0025] The system comprises the following components: Transportation platform 1 (or transportation platform 2) refers to the base structure that carries the main body of the device and transports the empty fabric core 7 and the finished fabric roll; an AGV (Automated Guided Vehicle) can be used. The robotic arm gripper mechanism 2 (or robotic arm gripper 2) is a gripping device with multiple degrees of freedom, used to precisely grasp the fabric roll or core during roll changing. The cutting area 3 (or cutting area) is the working area where cutting blades are arranged; the movable cutting mechanism 4 can use a linear guide rail with rotating blades for rapid fabric cutting. The buffer area 5 (or buffer area) is the storage area for temporarily storing the finished fabric roll; it can be designed as an inclined tray with limit baffles for easy subsequent transfer operations. The placement area 6 (or placement area) is the positioning area for preparing the empty fabric core 7. The fabric dropping area 8 (or fabric dropping area) is the guiding area for receiving the cut fabric ends, ensuring the fabric ends remain flat after hanging naturally. The rubbing mechanism 9 (or rubbing mechanism 9) is the transmission component that drives the rotation of the fabric roll or core, such as a gripper structure with built-in friction wheels, used to initiate the winding action after the fabric ends are bonded.

[0026] Specifically, during operation, the empty core rod 7 is pre-placed in the positioning slot of the placement area 6. After the circular knitting machine completes the fabric winding, the robotic arm gripper mechanism 2 moves to the working position to grip the full roll of fabric and moves it along the transport platform 1 to the buffer area 5 for temporary storage. The cutting mechanism 4 then moves along the guide rail to the top of the fabric to complete the cutting, and the cut fabric ends fall into the fabric drop area 8 under gravity. At this time, the robotic arm grips the prepared empty core rod 7 and, through a vertical lifting action, allows the fabric covering the core rod to slide naturally into the fabric drop area 8. The gripper mechanism carries the empty core rod 7 and precisely presses it down, so that the adhesive layer on the surface of the core rod contacts the fabric end to complete the initial fixation. The rubbing mechanism 9 drives the core rod to rotate, and after rewinding the fabric to the set length, the robotic arm sends the core rod loaded with the new fabric roll back to the circular knitting machine station, realizing a fully automatic roll changing process.

[0027] Compared with existing technologies, this solution achieves seamless process integration through optimized spatial layout, and the robotic arm gripper integrates a rubbing function, eliminating the need for additional drive devices. The linkage design between the shearing zone 3 and the fabric dropping zone 8 eliminates the need for manual adjustment of the fabric end position, and the symmetrical distribution of the placement zone 6 and the buffer zone 5 shortens the material transfer distance.

[0028] Through the above technical solution, this application achieves fully automated operation of fabric cutting, fabric roll changing, and fabric end bonding, eliminating process interruptions caused by manual intervention. The collaborative operation of the robotic arm and functional zones reduces roll changing time to 30% of the traditional method, while avoiding fabric end positioning deviation problems in manual operation. The integrated design of each functional module reduces the equipment footprint by approximately 40%, making it particularly suitable for the layout of compact textile workshops.

[0029] This application further proposes that a rubber pad 10 be provided in the fabric application area 8.

[0030] The rubber pad 10 refers to a planar cushioning structure made of elastic polymer material, specifically molded from styrene-butadiene rubber or natural rubber. Its surface can be designed with regular textures or granular protrusions to increase the frictional resistance of the contact surface. The thickness of the rubber pad 10 can range from 3 mm to 10 mm, absorbing the kinetic energy of the falling fabric through elastic deformation.

[0031] Specifically, when the cut fabric end detaches freely from the shearing mechanism 4, the rubber pad 10 constrains the fabric end's sliding range through frictional resistance generated by its surface roughness. At the instant the fabric end contacts the rubber pad 10, the material's compression deformation prolongs the impact time, reducing the probability of the fabric end rebounding. The static friction between the fabric end and the rubber pad 10 overcomes the component of gravity, keeping the fabric end stably stationary in the contact area and preventing it from sliding out of the predetermined gripping range due to inertia.

[0032] Compared to existing technologies, traditional devices use metal or rigid plastic as the base material for the fabric drop area 8, which easily leads to elastic rebound or sliding displacement of the fabric tip upon contact. This solution utilizes the viscous damping effect of elastic materials to convert the kinetic energy of the fabric tip into internal energy, achieving self-stabilization of the fabric tip without external positioning mechanisms.

[0033] Through the above technical solution, this application enables the cut fabric scraps to be precisely positioned in a predetermined area, and the robotic arm gripper mechanism 2 can complete the positioning and bonding of the fabric scraps and the hollow rod core 7 without additional adjustment of the gripping path. The deformation constraint effect generated when the fabric scraps come into contact with the rubber pad 10 ensures that the end of the fabric scraps and the axis of the hollow rod core 7 remain perpendicularly aligned in the subsequent bonding process.

[0034] This application further proposes that a baffle plate 11 be provided on the side of the placement area 6 away from the fabric drop area 8, and a placement groove 12 be formed between the baffle plate 11 and the rubber pad 10, and the hollow rod core 7 be placed in the placement groove 12.

[0035] Among them, the side plate 11 refers to the rigid limiting structure installed perpendicular to the transport platform 1. Specifically, it can be formed by welding metal plates with a thickness of 2-5 mm, and is used to block the displacement of the hollow rod core 7 in the lateral direction.

[0036] Among them, the rubber pad 10 refers to the elastic buffer layer covering the surface of the fabric drop area 8. Specifically, it can be molded from rubber material with a Shore hardness of 50-70 degrees, and its surface can be provided with anti-slip texture to enhance the coefficient of friction.

[0037] The placement groove 12 refers to the space area enclosed by the vertical plane of the side plate 11 and the horizontal plane of the rubber pad 10. The width of the groove is designed to be slightly larger than 1.05-1.2 times the diameter of the empty rod core 7. For example, for an empty rod core 7 with a diameter of 200 mm, the groove width can be set to 210-240 mm.

[0038] Specifically, when the hollow rod core 7 is placed in the placement slot 12 by the robotic arm, its axial direction is parallel to the plane of the side plate 11. The vertical height of the side plate 11 is set to 1.2-1.5 times the radius of the hollow rod core 7. For example, for a hollow rod core 7 with a diameter of 200 mm, the height of the side plate 11 can be 120-150 mm, ensuring that the hollow rod core 7 cannot overturn the side plate 11 when subjected to external force. The compression deformation of the rubber pad 10 is controlled within the range of 3-5 mm, producing moderate deformation when bearing the weight of the hollow rod core 7. The rebound force generated by the elastic deformation of the material enhances the covering effect of the hollow rod core 7. The resulting three-dimensional limiting structure achieves mechanical limiting in the horizontal direction through the side plate 11, and achieves dynamic constraint in the vertical direction through the deformation friction of the rubber pad 10.

[0039] Compared with existing technologies, the traditional empty core 7 placement area 6 only has a planar support platform, which can easily lead to core slippage and misalignment during equipment operation vibration or robotic arm gripping operations. This solution achieves precise positioning of the empty core 7 in the rewinding process through the synergistic effect of rigid guards and elastic supports, preventing gripping failure or bonding misalignment caused by displacement deviation.

[0040] Through the above technical solution, this application effectively constrains the spatial position of the empty core 7 during the automated roll changing process, ensuring that the robotic arm gripper obtains a consistent positioning reference each time it grasps the core. The elastic deformation characteristics of the rubber pad 10 compensate for the positional fluctuations caused by equipment vibration, while the rigid limiting of the side plate 11 eliminates the risk of lateral slippage. The combination of the two significantly improves the continuity and reliability of the roll changing operation.

[0041] This application further proposes to install a graphic viewing device on the gripper mechanism of the robotic arm, and to install graphic marks in the distribution area 8, with the graphic viewing device used to identify the graphic marks.

[0042] The image viewing device refers to a device installed on the gripper mechanism of the robotic arm for acquiring image information. Specifically, it can be implemented using a vision system with a camera, such as integrating an industrial camera and supplementary lighting source at the end of the gripper, and using image processing algorithms to determine the position and orientation of the fabric end. The function of this device is to detect in real time whether the fabric end has fallen into the fabric dropping area 8 through visual feedback and to determine its spreading state, ensuring the accuracy of subsequent bonding operations.

[0043] The graphic mark refers to a specific pattern or symbol pre-set within the fabric placement area 8. This can be implemented using high-contrast geometric shapes or coded symbols, such as a black rectangular border or a QR code. The mark serves as a reference for image recognition; by analyzing the proportion of the fabric covering the mark or the visibility of the mark, it determines whether the fabric is in the correct position.

[0044] Specifically, when the cut fabric scrap falls into the fabric dropping area 8, the robotic arm gripper mechanism acquires an image of the dropping area 8 through a graphic viewing device. The camera module captures a real-time image containing graphic markings and uses an image processing algorithm to detect whether the fabric scrap completely covers the marked area. For example, if the fabric scrap completely obscures the graphic markings, it is determined that the fabric scrap has fallen correctly; if the markings are partially visible, it is determined that the fabric scrap is misaligned or wrinkled. The system adjusts the robotic arm's movements based on the recognition results: if the fabric scrap is in the correct position, the subsequent bonding steps are performed; if there is an abnormality, an alarm is triggered or the fabric scrap position is readjusted.

[0045] Compared to existing technologies, traditional methods rely on manual visual inspection or mechanical contact sensors to determine the fabric condition, resulting in low detection accuracy and slow response speed. For example, mechanical sensors cannot identify fabric wrinkles or local misalignments, while manual observation is prone to misjudgment due to fatigue. This solution employs non-contact visual inspection, combining graphic markers with image analysis technology to accurately identify the spatial position and laying pattern of the fabric, avoiding bonding failures caused by abnormal fabric posture.

[0046] Through the above technical solution, this application can automatically determine whether the cut fabric scraps fall completely into the fabric drop area 8 and remain flat, eliminating the problem of misalignment of the hollow core 7 due to fabric scrap offset, folding, or hanging. For example, when the edge of the fabric scrap does not completely cover the graphic mark, the system can pause the process in time and adjust the position of the fabric scrap, thereby ensuring the success rate of subsequent bonding operations and reducing production interruptions and material waste.

[0047] This application further proposes a graphics viewing device including a camera module and a fill light module.

[0048] The camera module is a device used to acquire image information of the fabric in the fabric drop area 8. It can be implemented using an industrial camera, and uses an image sensor to convert optical signals into digital signals, providing a data source for subsequent image processing. The supplementary lighting module is a device that provides a stable light source for image acquisition. It can be implemented using an LED array, and by adjusting the brightness and angle, it eliminates ambient light interference and ensures image clarity.

[0049] Specifically, the camera module is mounted on the robotic arm gripper mechanism 2, and its shooting range covers the fabric end position within the fabric drop area 8. The supplementary lighting module is integrated with the camera module on the same bracket, and the light source illuminates the fabric end surface with a specific wavelength and uniform light intensity. After the fabric is cut, the camera module, with the assistance of the supplementary lighting module, continuously captures images of the fabric drop area 8, and uses an edge detection algorithm to identify whether the fabric end is laid flat on the surface of the rubber pad 10, or whether there are wrinkles or offset phenomena. Based on the identification results, the system determines whether the fabric end is in a bondable state and transmits the signal to the robotic arm gripper mechanism 2 to execute subsequent operations.

[0050] Compared to existing technologies, traditional methods rely on manual observation of the fabric end's condition, which is susceptible to misjudgments due to lighting conditions and visual fatigue, and requires machine downtime for manual confirmation. This solution, however, uses automated image acquisition and analysis to monitor the fabric end's position in real time during continuous production without interrupting equipment operation. Furthermore, a supplementary lighting module eliminates the interference of ambient light fluctuations on image quality, improving recognition stability.

[0051] Through the above technical solution, this application realizes the automated and accurate judgment of the fabric end position status, avoids the subjective error of manual observation, shortens the time spent on fabric end positioning during roll changing, and thus improves the overall efficiency and reliability of the roll changing process.

[0052] This application further proposes to provide an adhesive layer on the surface of the hollow core 7, which can be bonded to the fabric end.

[0053] The adhesive layer refers to the layer of adhesive material attached to the surface of the hollow core 7, which can be achieved using Velcro or pressure-sensitive tape, with the adhesive side facing the direction in which the fabric falls. This structure utilizes adhesion to replace the traditional manual fixing method, directly completing the initial connection between the fabric and the core during the downward pressing action of the robotic arm. Fabric bonding refers to the physical connection formed when the cut fabric end comes into contact with the adhesive layer through pressure, providing a fixed foundation for subsequent winding.

[0054] Specifically, after the empty core 7 is lifted by the gripper mechanism 2 of the robotic arm, the adhesive layer is aligned downwards with the fabric end in the fabric drop area 8. When the robotic arm performs a pressing action, the fabric end is subjected to pressure and comes into contact with and adheres to the adhesive layer. During the bonding process, the fabric end does not require manual adjustment of its position or additional fixing devices; effective connection can be achieved solely through the positioning accuracy of the robotic arm. After bonding is completed, the rubbing mechanism 9 drives the empty core 7 to rotate, and the fabric 14 is continuously wound into the surface of the core. The initial fixing force provided by the adhesive layer ensures that the winding process proceeds smoothly.

[0055] Compared to existing technologies, traditional roll-changing processes require manual winding or binding of the fabric end onto the empty core 7, which is time-consuming and prone to loosening. This solution achieves automated bonding directly through a pre-set adhesive layer, eliminating the need for manual intervention and avoiding issues such as winding misalignment or machine downtime caused by insecure fabric end fixation.

[0056] Through the above technical solution, this application achieves a rapid and reliable connection between the fabric end and the empty core 7, solving the problems of difficulty in fixing the fabric end and low operational efficiency during manual roll changing. The bonding process is coordinated with the robotic arm's movements to ensure continuous automation of the roll changing process, reducing downtime caused by manual intervention. The bonding structure is simple and easy to implement, highly compatible with existing equipment, and can be adapted to cores of different sizes and fabric types.

[0057] This application further proposes a technical solution of setting Velcro as an adhesive layer on the surface of the hollow rod core 7.

[0058] Hook and loop fasteners are reusable adhesive materials consisting of hook and loop sides. Specifically, they can be made by combining nylon hook and loop tapes with polyester fiber loop tapes, achieving adhesion through the physical interlocking of the hook and loop sides. The hook side of the hook and loop fastener is fixed to the surface of the hollow core 7, while the loop side contacts the fabric. During the downward pressing action of the robotic arm gripper mechanism 2, the hook and loop sides automatically engage.

[0059] Specifically, during the roll changing process, after the cutting mechanism 4 completes the cutting, the fabric end naturally falls onto the surface of the rubber pad 10 in the fabric drop area 8. At this time, the robotic arm gripper mechanism 2 picks up the empty core 7 and moves it above the fabric drop area 8. Through a vertical downward pressing action, the hook and loop fasteners on the surface of the empty core 7 come into contact with the fabric end. Since the hook and loop fasteners can immediately form an effective bond under pressure, there is no need to manually adjust the relative position of the fabric end and the empty core 7. When the subsequent twisting mechanism 9 drives the empty core 7 to rotate, the hook and loop fasteners have sufficient clamping force to maintain a stable connection between the fabric end and the empty core 7, ensuring a smooth winding process.

[0060] Compared to existing technologies, traditional methods use glue or double-sided tape to fix the fabric, requiring manual application of glue or removal of the protective tape layer, and precise control of contact pressure and dwell time during bonding. Hook and loop fasteners, on the other hand, achieve instant bonding through a physical interlocking mechanism, eliminating glue curing time and avoiding the risk of glue contamination of equipment. Furthermore, hook and loop fasteners can withstand thousands of repeated bonding operations, significantly reducing the frequency of consumable replacements.

[0061] Through the above technical solution, this application achieves automated bonding of the fabric end and the hollow core 7, completely eliminating manual intervention. Fabric end positioning errors can be automatically compensated for by the adaptive interlocking characteristics of the Velcro, ensuring reliable bonding of fabrics of different thicknesses or materials. This solution also solves the problem of adhesive attenuation caused by temperature or humidity changes in traditional adhesives, improving the stability of roll-changing operations.

[0062] This application proposes a method for changing rolls using an automatic material cutting and roll changing device. The specific steps are as follows: S1, the transport platform 1 first places the empty core 7 in the placement area 6 and enters the large circular knitting machine; S2, the robotic arm gripper mechanism 2 takes the wound fabric roll from the large circular knitting machine and transfers it to the buffer area 5; S3, the cutting mechanism 4 cuts the fabric so that the fabric end falls into the fabric drop area 8, and the graphic viewing device identifies the graphic mark to determine the status of the fabric end; S4, the robotic arm gripper mechanism 2 lifts the empty core 7 so that the covered fabric 14 slides down into the fabric drop area 8; S5, the adhesive part of the empty core 7 is aligned downwards with the fabric end and pressed down to make it adhesive; S6, the rubbing mechanism 9 drives the empty core 7 to rotate to wind the fabric 14; S7, finally, the wound core is sent back to the large circular knitting machine to complete the roll changing.

[0063] The transport platform 1 is an automated moving device used to carry and transport the empty core 7 to a designated position, providing empty material support for subsequent roll changing processes. The robotic arm gripper mechanism 2 is a gripping device with multi-degree-of-freedom motion, specifically implemented using a servo motor and pneumatic grippers, used to precisely grasp and transfer the fabric roll and empty core 7. The shearing mechanism 4 is a cutting device that can move along a preset path, specifically implemented using an electric cutter and guide rail structure, used to cut the fabric at a set position to form a fabric end. The image viewing device is a vision-based positioning component, specifically implemented using an industrial camera and image processing module, used to determine whether the posture of the fabric end in the fabric drop area 8 meets the bonding conditions. The rubbing mechanism 9 is a transmission component that drives the empty core 7 to rotate, specifically implemented using friction wheels or belt drives, used to automatically wind the fabric end onto the surface of the empty core 7.

[0064] Specifically, after the circular knitting machine completes the fabric roll winding, the empty core 7 is pre-placed in the placement area 6 of the transport platform 1. The robotic arm gripper mechanism 2 picks up the full fabric roll and transfers it to the buffer area 5, while the cutting mechanism 4 cuts the fabric above the fabric drop area 8, allowing the fabric end to hang freely. The graphic viewing device identifies graphic marks within the fabric drop area 8 to determine whether the fabric end is in the adhesive area. If the fabric end is misaligned, the robotic arm gripper mechanism 2 lifts the empty core 7, causing the fabric 14 covering it to slide off, and readjusting the fabric end position. Subsequently, the adhesive layer of the empty core 7 is pressed down to contact the fabric end, fixing the starting end of the fabric end through adhesion. The twisting mechanism 9 drives the empty core 7 to rotate, continuously winding the fabric to form a new roll, which is finally returned to the circular knitting machine by the robotic arm, realizing unmanned roll changing operation.

[0065] Compared to existing technologies, traditional methods require manual operation of opening doors, cutting, handling, and roll changing, resulting in multiple downtimes and limited production efficiency. This solution, however, utilizes the collaborative operation of the transport platform 1 and the robotic arm to automatically feed empty cores 7 and transfer full rolls of fabric; the linkage between the shearing mechanism 4 and the graphic viewing device ensures accurate fabric end positioning; and the cooperation of the bonding and twisting mechanism 9 replaces manual fixing and winding actions, enabling continuous roll changing without human intervention.

[0066] Through the above technical solution, this application realizes the full automation of the roll changing process, eliminates the operation steps of manually handling the roll, manually cutting the fabric and fixing the fabric end, reduces equipment downtime, avoids the problem of fabric end misalignment or adhesion failure caused by human operation error, thereby improving roll changing efficiency and reducing labor intensity.

[0067] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. An automatic cutting and roll changing device, characterized in that: it comprises a transport platform (1), a mechanical arm gripper mechanism (2) for clamping a finished cloth roll or an empty bobbin (7) is arranged on the rear side of the transport platform (1), a shearing area (3) is arranged in front of the mechanical arm gripper mechanism (2), a movable shearing mechanism (4) for cutting cloth is arranged in the shearing area (3), a buffer area (5) for placing finished cloth rolls is arranged behind the shearing area (3), a placing area (6) for placing a replacement empty bobbin (7) is arranged in front of the shearing area (3), a cloth falling area (8) is arranged between the placing area (6) and the shearing area (3), and the cloth head after cutting is located in the cloth falling area (8); a rubbing mechanism (9) for rotating the finished cloth roll or the empty bobbin (7) is arranged on the mechanical arm gripper mechanism (2).

2. The automatic cutting and roll changing device according to claim 1, characterized in that: a rubber pad (10) is arranged in the cloth falling area (8).

3. The automatic cutting and roll changing device according to claim 2, characterized in that: a side away from the cloth falling area (8) of the placing area (6) is provided with a side plate (11), a placing groove (12) is formed between the side plate (11) and the rubber pad (10), and the empty bobbin (7) is placed in the placing groove (12).

4. The automatic cutting and roll changing device according to claim 1 or 3, characterized in that: a pattern viewing device is arranged on the mechanical arm gripper mechanism, a pattern mark is arranged in the cloth falling area (8), and the pattern viewing device is used to identify the pattern mark.

5. The automatic cutting and roll changing device according to claim 4, characterized in that: the pattern viewing device comprises a camera module and a light supplementing module.

6. The automatic cutting and roll changing device according to claim 1 or 3, characterized in that: a sticky layer is arranged on the surface of the empty bobbin (7), and the sticky layer can be bonded with the cloth head.

7. The automatic cutting and roll changing device according to claim 6, characterized in that: the sticky layer is a magic tape. ​

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