An automatic rewinding machine for biaxial automatic exchange and automatic cutting of a web

Abstract

The utility model relates to the field of rewinding machine, and disclose a kind of for the automatic rewinding machine of double-shaft automatic exchange and automatic cutting of coiled material, including installation on the feed guide roller of rack, tension control roller, length meter, first winding shaft and second winding shaft being arranged in winding area in parallel, double-shaft support, winding drive servo motor, slitting cutter, roll changing mechanism, tail material smoothing mechanism, pneumatic chuck.The automatic rewinding machine for the double-shaft automatic exchange and automatic cutting of coiled material described in the utility model, through double-shaft automatic exchange and the automatic cutting of set length trigger, tail material smoothing and other technical means, realize the high automation and continuity of coiled material processing, significantly shorten roll changing downtime, reduce manual operation and unstable factors, widely applicable to textile, film, label, paper and other industries.Equipment structure is compact, control is reliable, and strong adaptability, facilitate production and reduce cost, and improve coiled material yield rate and post-process matching efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rewinding machines, specifically an automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials. Background Technology

[0002] Currently, in the production and post-processing of roll materials, wide-width materials often need to be automatically cut and the take-up mandrel replaced after reaching a set length or full roll to maintain continuous production. Existing technologies, such as single-axis or manual take-up mandrel replacement, suffer from drawbacks such as production line downtime, time-consuming roll changes, and unstable waste material handling, making it difficult to meet the demands for high-efficiency, low-labor production. Furthermore, loose or wrinkled waste material can affect the quality of subsequent processes. Therefore, there is an urgent need for an automatic rewinding device capable of dual-axis automatic exchange, automatic cutting, automatic waste material smoothing, and automatic roll changing upon reaching a set length, in order to improve production continuity and finished product quality. This paper proposes an automatic rewinding machine for roll materials with dual-axis automatic exchange and automatic cutting. Utility Model Content

[0003] The purpose of this invention is to provide an automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials includes a feed guide roller, a tension control roller, a length meter, a first take-up shaft and a second take-up shaft arranged side by side in the take-up area, a biaxial support, a take-up drive servo motor, a slitting cutter, a roll changing mechanism, a tail material smoothing mechanism, a pneumatic chuck, and an operation panel for controlling the above devices, all mounted on a frame. The length counter is located upstream of the feeding path, the slitting cutter is located downstream of the length counter, and the dual-axis bracket is used to support the first and second winding shafts and cooperate with the winding change mechanism to achieve shaft position switching. The PLC controls the coordinated action of the slitting cutter, the winding change mechanism, the winding drive servo motor, and the tail material smoothing mechanism based on the length counter signal. The first and second take-up shafts are arranged side by side at both ends of the dual-axis support. The dual-axis support can rotate or move laterally relative to the frame to switch the spare shaft to the working position. The switching action is driven by the roll-changing mechanism and confirmed by the sensor group. The take-up drive servo motor is connected to the current working take-up shaft through a detachable or switchable transmission coupling so that the driving force can be switched from the original working shaft to the spare shaft during the shaft-changing process. The slitting blade is a transverse slitting blade or a rotary slitting blade linked to the length counter. The automatic rewinding machine is mounted on a frame. The material enters from the front feed end and is guided to the winding area by the feed guide roller, tension control roller and tension buffer arm. The winding area has a first winding shaft and a second winding shaft arranged side by side in the transverse direction. The first winding shaft and the second winding shaft are mounted on a double shaft support. A feed belt is installed on one side of the tail material smoothing mechanism. The left side of the rewinding machine is equipped with a discharge bracket and an unwinding bracket. A safety guard is installed on one side of the double shaft support.

[0005] Preferably, the tail material smoothing mechanism includes at least one set of pressure rollers driven by cylinders and supplemented by brush rollers or vacuum adsorption components. After cutting, the pressure rollers flatten the tail material end and attach it to a spare take-up shaft to complete the first layer bonding.

[0006] Preferably, the tail material smoothing mechanism is controlled by a PLC according to a preset sequence, which controls its clamping force and movement position.

[0007] Preferably, the tension control roller works in conjunction with the tension buffer arm. The displacement or force sensor on the tension buffer arm feeds back the tension information to the PLC in real time. The PLC achieves closed-loop tension control by adjusting the torque of the winding drive servo motor.

[0008] Preferably, the pneumatic chuck is located at the ends of the first and second take-up shafts to clamp or release the core. The clamping / releasing state of the pneumatic chuck is controlled by the winding mechanism and the PLC, and confirmed by the position sensor.

[0009] Preferably, the winding drive servo motor, slitting cutter, tail material smoothing mechanism and winding change mechanism are interlocked, sequentially controlled and error protected by PLC. In addition, if any safety guard is not in place or the sensor detects an abnormality, the PLC will automatically stop the winding change and cutting actions and issue an alarm.

[0010] Compared with existing technologies, this utility model has the following advantages: An automatic rewinding machine for dual-axis automatic exchange and automatic cutting of roll materials uses a length meter to measure the length of the fed roll material in real time and sends the signal to the PLC. When the preset length is reached or the winding diameter / length judgment is in place, the PLC controls the cutter action according to preset logic and links the dual-axis automatic exchange mechanism. Unused shafts quickly reach their positions and start the winding drive, while full shafts are released by pneumatic chucks and removed by an automatic unwinding / unwinding device. After the tail material is cut, the tail material flattening / smoothing mechanism flattens and adheres to the winding shaft, ensuring that the tail material is tightly attached to the core to start a new roll. The entire process requires no manual intervention, achieving continuous, efficient, and stable production; it achieves seamless dual-axis switching and automatic roll changing, reducing downtime; automatic cutting at the set length ensures accurate and consistent roll material length; the tail material smoothing device ensures that the tail material is wrinkle-free and unhooked during roll changing, improving roll material quality; the overall automation level is high, saving labor and increasing production capacity. Attached Figure Description

[0011] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of an automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to the present invention. Figure 2 This is a schematic diagram of the left side of an automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to the present invention. Figure 3 This is a schematic diagram of the right side of an automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to the present invention. In the diagram: 1. Frame; 2. Feed guide roller; 3. Tension control roller; 4. First take-up roller; 5. Second take-up roller; 6. Dual-axis support; 7. Take-up drive servo motor; 8. Length counter; 9. Slitting cutter; 10. Roll changing mechanism; 11. Feed belt; 12. Tail material smoothing mechanism; 13. Pneumatic chuck; 14. Tension buffer arm; 15. Sensor group; 16. Operation panel; 17. Discharge bracket; 18. Unwind bracket; 19. Safety guard. Detailed Implementation

[0012] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0013] Please see Figure 1-3 An automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials includes a feed guide roller 2, a tension control roller 3, a length meter 8, a first take-up shaft 4 and a second take-up shaft 5 arranged side by side in the take-up area, a biaxial support 6, a take-up drive servo motor 7, a slitting cutter 9, a roll changing mechanism 10, a tail material smoothing mechanism 12, a pneumatic chuck 13, and an operation panel 16 for controlling the above devices. The length counter 8 is located upstream of the feeding path, the slitting cutter 9 is located downstream of the length counter 8, the dual-axis bracket 6 is used to support the first winding shaft 4 and the second winding shaft 5 and cooperates with the winding change mechanism 10 to realize shaft position switching; the PLC controls the coordinated action of the slitting cutter 9, the winding change mechanism 10, the winding drive servo motor 7 and the tail material smoothing mechanism 12 based on the signal from the length counter 8. The first take-up shaft 4 and the second take-up shaft 5 are arranged side by side at both ends of the dual-axis bracket 6. The dual-axis bracket 6 can rotate or move laterally relative to the frame 1 to switch the spare shaft to the working position. The switching action is driven by the roll changing mechanism 10 and confirmed by the sensor group 15. The take-up drive servo motor 7 is connected to the current working take-up shaft through a detachable or switchable transmission coupling so that the driving force can be switched from the original working shaft to the spare shaft during the shaft changing process. The slitting cutter 9 is a transverse cutter or a rotary cutter that is linked to the length counter 8. The automatic rewinding machine is mounted on the frame 1. The material enters from the front feed end and is guided to the winding area by the feed guide roller 2, tension control roller 3 and tension buffer arm 14. The winding area has a first winding shaft 4 and a second winding shaft 5 arranged side by side in the transverse direction. The first winding shaft 4 and the second winding shaft 5 are mounted on the double shaft support 6. A feed belt 11 is installed on one side of the tail material smoothing mechanism 12. A discharge bracket 17 and an unwinding bracket 18 are respectively arranged on the left side of the rewinding machine, and a safety guard 19 is installed on one side of the double shaft support 6.

[0014] Preferably, the tail material smoothing mechanism 12 includes at least one set of pressure rollers driven by cylinders and supplemented by brush rollers or vacuum adsorption components. After cutting, the pressure rollers flatten the tail material end and attach it to the spare take-up shaft to complete the first layer bonding.

[0015] Preferably, the tail material smoothing mechanism 12 is controlled by a PLC according to a preset sequence, which controls its clamping force and moving position.

[0016] Preferably, the tension control roller 3 works in conjunction with the tension buffer arm 14. The displacement or force sensor on the tension buffer arm feeds back the tension information to the PLC in real time. The PLC achieves closed-loop tension control by adjusting the torque of the winding drive servo motor 7.

[0017] Preferably, the pneumatic chuck 13 is disposed at the ends of the first take-up shaft 4 and the second take-up shaft 5, for clamping or releasing the core. The clamping / releasing state of the pneumatic chuck 13 is controlled by the winding mechanism 10 and the PLC in linkage, and is confirmed by the position sensor.

[0018] Preferably, the winding drive servo motor 7, slitting cutter 9, tail material smoothing mechanism 12 and winding change mechanism 10 are interlocked, sequentially controlled and error protected by PLC. When any safety guard 19 is not in place or the sensor detects an abnormality, the PLC automatically stops the winding change and cutting action and issues an alarm.

[0019] It should be noted that after the material is fed in from the front feed end, it first passes through the feed guide roller 2 and the tension control roller 3. The tension control roller 3, together with the tension buffer arm 14, forms a tension stabilization zone. The position sensor or encoder on the tension buffer arm converts the tension displacement into an electrical signal and sends it to the PLC 16. The PLC adjusts the torque and speed of the winding drive servo motor 7 according to the set target tension value, thereby realizing closed-loop tension control and ensuring that the tension of the roll material is uniform and stable throughout the entire winding process.

[0020] The material continues to be fed into the take-up area, passing through the length counter 8. The length counter uses a contact measuring wheel or a non-contact encoder to sample the linear speed and cumulative length of the conveyed material in real time. The target length is preset in the PLC. When the cumulative length of the length counter approaches the target value (e.g., within the set "early trigger distance"), the PLC will enter the roll change preparation state. After entering this state, the PLC will issue a series of sequential commands: first, slightly relax the material section near the take-up shaft by reducing the tension (but still maintain sufficient tension for positioning); then trigger the slitting cutter 9 to prepare. At the same time, the PLC starts the pre-clamping action of clamping the core on the spare shaft (the currently idle shaft in the dual shafts), confirming that the clamping position sensor is in place (feedback from sensor group 15).

[0021] When the meter counter detects a signal indicating that the set length has been precisely reached, the PLC immediately triggers the cutter 9 to perform a transverse cut. The cutting method can be either a rotary cutter or a sliding cutter for rapid transverse cutting. The cutter's movement is synchronized with the material speed or involves instantaneous high-frequency cutting to ensure a clean cut. At the moment of cutting, the cut end (tail end) is immediately gripped and pre-processed by the tail material smoothing mechanism 12: the tail material smoothing mechanism uses a cylinder-driven pressure roller or brush roller to stretch and flatten the tail material end. The pressure roller provides constant pressure by adjusting the cylinder stroke and pre-compression spring, keeping the tail material flat and wrinkle-free before it is guided to the spare shaft position. Simultaneously, the PLC controls the winding drive servo motor 7 to briefly decelerate and steer (or uses a short braking action with brake pads) to coordinate with the instantaneous tension changes generated by cutting, preventing skipping or loosening of the winding.

[0022] After the cutting is completed and the tail material smoothing action is confirmed to be in place, the PLC controls the automatic roll changing mechanism 10 to operate: this mechanism controls the dual-axis support 6 to switch the working axis. A common implementation method is to rotate the dual-axis support 180° around the central axis or to move the spare axis into the original winding position by lateral translation. During the roll changing process, the PLC confirms the status according to preset time points or sensor signals (spare axis arrival signal, pneumatic chuck clamping signal). When the spare axis is in place and the core is clamped by the pneumatic chuck 13, and the winding drive servo motor 7 is simultaneously powered on, the spare axis begins to pull out the tail material at the target winding speed and attaches it to the core. During the attachment stage, the tail material smoothing mechanism 12 continues to press and correct the tail material, ensuring that the first layer of the roll is neat and concentric with the core. After the first section stabilizes, the PLC gradually restores the normal tension setting and enters the normal winding state.

[0023] For a full old roll, the automatic roll changing mechanism releases it from the working position (pneumatic chuck 13 releases). The old roll is received by the unloading tray 18 or the automatic transfer device, and the full roll is removed from the machine by a conveying mechanism or pusher device. The empty roll can return to its position for the next cycle. The entire roll changing process is completed under the closed-loop control of the PLC. The roll changing time is usually less than a few seconds, achieving almost continuous production.

[0024] In addition, the machine is equipped with roll diameter or length detection sensors (which can be photoelectric or proximity switches combined with a distance measuring displacement meter) to trigger roll changes when the roll diameter reaches a set value in certain production modes (e.g., roll change mode based on roll diameter). The PLC combines the roll diameter signal with the meter counter signal to provide multiple triggering strategies (length triggering or roll diameter triggering).

[0025] In terms of safety and fault tolerance, when any sensor detects an anomaly (such as poor clamping, tool malfunction, or failure to smooth out tail material), the PLC will immediately stop the winding drive and enter an alarm standby state, prompting the operator to check the alarm and manually intervene via the control panel (HMI). Under normal circumstances, automatic roll changing and cutting actions are only permitted to be performed after the safety guard 19 is closed and confirmed to be in place.

[0026] Through the above-mentioned coordinated control and structural cooperation, the present invention realizes functions such as automatic cutting upon reaching the set length, automatic smoothing of tail material, automatic dual-axis exchange, automatic roll changing and automatic roll unloading, which significantly improves production continuity and finished roll quality, reduces manual intervention and increases capacity and yield.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials, comprising a feed guide roller (2), a tension control roller (3), a length meter (8), a first take-up shaft (4) and a second take-up shaft (5) arranged side by side in the take-up area, a biaxial support (6), a take-up drive servo motor (7), a slitting cutter (9), a roll changing mechanism (10), a tail material smoothing mechanism (12), a pneumatic chuck (13), and an operation panel (16) for controlling the above-mentioned devices; characterized in that: in, The length counter (8) is located upstream of the feeding path, and the slitting cutter (9) is located downstream of the length counter (8). The dual-axis bracket (6) is used to support the first winding shaft (4) and the second winding shaft (5) and cooperates with the winding change mechanism (10) to realize shaft position switching. The PLC controls the coordinated action of the slitting cutter (9), the winding change mechanism (10), the winding drive servo motor (7), and the tail material smoothing mechanism (12) based on the signal from the length counter (8). The first take-up shaft (4) and the second take-up shaft (5) are arranged side by side at both ends of the dual-axis bracket (6). The dual-axis bracket (6) can rotate or move laterally relative to the frame (1) to switch the spare shaft to the working position. The switching action is driven by the roll changing mechanism (10) and confirmed by the sensor group (15). The take-up drive servo motor (7) is connected to the current working take-up shaft through a separable or switchable transmission coupling so that the driving force can be switched from the original working shaft to the spare shaft during the shaft changing process. The slitting cutter (9) is a transverse cutter or a rotary cutter that is linked with the length counter (8). The automatic rewinder is installed on the frame (1). The material enters from the front feed end and is guided to the winding area by the feed guide roller (2), tension control roller (3) and tension buffer arm (14). The winding area is arranged with the first winding shaft (4) and the second winding shaft (5) arranged side by side in the transverse direction. The first winding shaft (4) and the second winding shaft (5) are set on the double shaft support (6). The tail material smoothing mechanism (12) is equipped with a feed belt (11) on one side. The left side of the rewinder is equipped with a discharge bracket (17) and an unwinding bracket (18). A safety guard (19) is installed on one side of the double shaft support (6).

2. The automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to claim 1, characterized in that: The tail material smoothing mechanism (12) includes at least one set of pressure rollers driven by cylinders and supplemented by brush rollers or vacuum adsorption components. After cutting, the pressure rollers flatten the tail material end and attach it to the spare take-up shaft to complete the first layer bonding.

3. The automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to claim 1, characterized in that: The tail material smoothing mechanism (12) is controlled by PLC according to a preset sequence, which controls its clamping force and movement position.

4. An automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to claim 1, characterized in that: The tension control roller (3) works in conjunction with the tension buffer arm (14). The displacement or force sensor on the tension buffer arm feeds back the tension information to the PLC in real time. The PLC achieves closed-loop tension control by adjusting the torque of the winding drive servo motor (7).

5. An automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to claim 1, characterized in that: The pneumatic chuck (13) is located at the ends of the first take-up shaft (4) and the second take-up shaft (5) to clamp or release the core. The clamping / releasing state of the pneumatic chuck (13) is controlled by the winding mechanism (10) and the PLC and confirmed by the position sensor.

6. An automatic rewinding machine for biaxial automatic exchange and automatic cutting of roll materials according to claim 1, characterized in that: The winding drive servo motor (7), slitting cutter (9), tail material smoothing mechanism (12) and roll changing mechanism (10) are interlocked, sequentially controlled and error protected by PLC. When any safety guard (19) is not in place or the sensor detects an abnormality, the PLC automatically stops the roll changing and cutting action and issues an alarm.

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