Rewinding machine material limiting mechanism
By designing a material limiting mechanism for the rewinder, automatic cutting of the paper tape and automatic replacement of the roll are achieved through motor drive and gear transmission, solving the problem of untimely manual operation and improving the efficiency of paper roll production and the consistency of paper tape length.
Patent Information
- Application Number
- CN202511297785.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2045-09-11
AI Technical Summary
In the current rewinding machine, manual cutting of paper strips and replacement of rolls are not timely or are cut prematurely, resulting in inconsistent paper strip lengths and requiring rework, which affects production efficiency.
Design a material limiting mechanism for a rewinder, which employs a metering component, a cutting component, and a connecting component. The mechanism drives the roll to rotate via a motor, cuts the paper tape using gear transmission and a cutting roller, and achieves automated roll changing via an electric push rod and a robotic arm.
It enables accurate cutting of paper tape and automated replacement of rolls, avoiding rework and improving the efficiency of paper roll production and the consistency of paper tape length.
Smart Images
Figure CN120774259B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of paper roll production equipment, in particular to a material limiting mechanism of a rewinding machine. BACKGROUND
[0002] The rewinding machine is special equipment for producing strip-shaped materials such as paper, and is used for rewinding the raw paper roll produced by a paper machine to obtain high-quality paper roll products.
[0003] At present, when the rewinding machine is used, the length of the paper tape wound on the winding drum needs to be measured manually, and when the paper roll winding is completed, the paper tape is cut off manually, then the winding drum is replaced, the paper tape is fixed with the new winding drum, and then the production of the paper roll is continued.
[0004] In the above-mentioned paper roll production process, the paper tape is cut off and the winding drum is replaced manually, and there is often a situation that the cutting is not timely or the cutting is too early, which leads to the fact that the lengths of the produced paper tapes are different, and subsequent rework is needed, which brings great inconvenience to the production of the paper roll. SUMMARY
[0005] In order to automatically cut off the paper tape and replace the winding drum, thereby facilitating the production of the paper roll, the application provides a material limiting mechanism of a rewinding machine.
[0006] The material limiting mechanism of the rewinding machine provided by the application adopts the following technical scheme:
[0007] The material limiting mechanism of the rewinding machine comprises a rack, a winding roller, a metering assembly, a cutting assembly and a connecting assembly; a rotating frame is rotatably arranged on the rack; a first motor is fixedly arranged on the rack, and the first motor is used to drive the rotating frame to rotate; at least two winding rollers are arranged, and each winding roller is rotatably arranged on the rotating frame; a winding drum is fixedly arranged on each winding roller, and a rubber strip is arranged on the winding drum; a second motor is fixedly arranged on the rack, and the second motor is used to drive the winding roller to rotate; the metering assembly comprises a driving gear and a driven gear; the driving gear is an incomplete gear, and the driving gear is coaxially and fixedly connected with the output shaft of the second motor; the driven gear is rotatably arranged on the rack, and the driven gear is engaged with the driving gear; the cutting assembly is arranged on the rack, and is used to cut off the paper tape and fix the cut paper tape; the connecting assembly is arranged on the rack, and is used to adjust the connection state of the second motor and the winding roller.
[0008] By adopting the above technical solution, during the production of paper rolls, the paper strip produced by the papermaking machine in the previous stage is glued to the roll drum with adhesive strips. The second motor drives the winding roller to rotate, thereby driving the roll drum to rotate and winding the paper strip onto the roll drum. The drive gear rotates together with the second motor. When the second motor rotates a certain number of times, that is, when a preset amount of paper strip is wound on the roll drum, the drive gear drives the driven gear to rotate at a certain angle. The paper strip is cut by the cutting component and then glued and fixed. Then, the second motor is disconnected from the winding roller by the connecting component, and the rotating frame is driven by the first motor to rotate for roller replacement. After the roller replacement is completed, the second motor is connected to the new winding roller by the connecting component. This realizes automated paper strip cutting and roll drum replacement, ensuring the accuracy of paper strip cutting time and the length of paper strip wound on the paper roll, avoiding rework, and thus facilitating the production of paper rolls.
[0009] Optionally, the cutting assembly includes a mounting block, a cutting roller, a third motor, and a cutter; the mounting block is slidably mounted on the frame; the cutting roller is rotatably connected to the mounting block, and a rubber strip is also provided on the cutting roller; the third motor is used to drive the cutting roller to rotate; the cutter is fixedly mounted on the cutting roller; a transmission assembly is provided on the frame, which is used to transmit the rotation of the driven gear to the mounting block and drive the mounting block to slide; a control assembly is provided on the frame, which is used to control the working state of the third motor.
[0010] By adopting the above technical solution, when cutting the paper tape, the rotation of the driven gear is transmitted to the mounting block through the transmission component, which drives the mounting block to slide, thereby driving the cutting roller to slide. When a preset amount of paper tape is wound on the paper roll, the cutting roller comes into contact with the paper tape. The paper tape is adhered to the cutting roller by the adhesive strip on the cutting roller. Then, the control component controls the third motor to start, driving the cutting roller to rotate, thereby driving the cutter to rotate and cut the paper tape, thus realizing the automatic cutting of the paper tape and the fixing of the paper tape to the cutting roller.
[0011] Optionally, the transmission assembly includes a crank, a connecting rod, and a slider; the crank is fixedly connected to the driven gear; one end of the connecting rod is hinged to the crank; a groove is provided on the frame; the slider is slidably disposed in the groove, and the end of the connecting rod away from the crank is hinged to the slider.
[0012] By adopting the above technical solution, the crank, connecting rod and slider together form a centered crank-slider mechanism, thereby realizing the transmission of the rotation of the driven gear to the slider and driving the slider to reciprocate.
[0013] Optionally, the control component includes a displacement sensor and a controller; the displacement sensor is fixedly installed in the slide groove, and is used to detect the position information of the slider and convert it into a position signal input to the controller; the controller is fixedly installed on the frame, and is electrically connected to both the displacement sensor and the third motor, and is used to receive the position signal transmitted by the displacement sensor and control the working state of the third motor.
[0014] By adopting the above technical solution, the displacement sensor is always in working state during the sliding process of the slider to detect the distance between the slider and the displacement sensor. When it is detected that the distance between the slider and itself gradually decreases and reaches the preset value, at this time the preset amount of paper tape is wound on the roll. The controller controls the third motor to rotate, thereby driving the cutting roller to rotate and cut the paper tape.
[0015] Optionally, the connecting assembly includes a first electric push rod and a connecting key; the fixed end of the first electric push rod is coaxially and fixedly connected to the output shaft of the second motor; the roller has a tubular structure and a keyway is provided on the roller; the connecting key is fixedly disposed on the movable end of the first electric push rod, and the connecting key is adapted to the keyway; the controller is electrically connected to both the first electric push rod and the first motor, and the controller is also used to control the working state of the first electric push rod and the first motor.
[0016] By adopting the above technical solution, when it is necessary to disconnect the second motor from the roller, the first electric push rod retracts, thereby driving the connecting key to slide away from the roller, thus disconnecting the second motor from the roller. When the second motor rotates, it cannot drive the roller to rotate. After the roller change is completed, the first electric push rod extends, and the movable end of the first electric push rod is inserted into the inner hole of the roller. During the extension process, it drives the connecting key to be inserted into the keyway, so that the output shaft of the second motor is connected to the roller. When the second motor starts, it can drive the roller to rotate, thereby realizing the adjustment of the connection state between the second motor and the roller.
[0017] Optionally, the connecting key is fixedly disposed at the top of the movable end of the first electric push rod; a counterweight is fixedly disposed on the roller, and the counterweight is located on the side of the roller away from the keyway.
[0018] By adopting the above technical solution, when changing rollers, during the rotation of the rotating frame, the new roller on the rotating frame is located at the bottom of the roller under the gravity of the counterweight, while the keyway is always located at the top of the roller. Therefore, when the first electric push rod extends, it can drive the connecting key to be inserted into the keyway.
[0019] Optionally, the frame is provided with a second electric push rod, and at least two second electric push rods are provided. The fixed end of the second electric push rod is fixedly connected to the rotating frame, and the movable end of the second electric push rod passes through the roller. The roller and the movable end of the second electric push rod can rotate relative to each other. The second electric push rod is electrically connected to the controller, and the controller is also used to control the working state of the second electric push rod.
[0020] By adopting the above technical solution, during use, the roll is fitted onto the movable end of the second electric push rod, allowing the roll to rotate relative to the rotating frame. When the paper roll production is completed and the roll needs to be unloaded, the controller controls the second electric push rod to retract, and the movable end of the second electric push rod moves away from the roll, causing the roll to disengage from the second electric push rod and fall to the bottom of the frame, thus realizing automated unloading of the paper roll.
[0021] Optionally, an upper roller manipulator is fixedly mounted on the frame. The upper roller manipulator is used to pass the roll through the movable end of the second electric push rod. The upper roller manipulator is electrically connected to the controller, which is also used to control the working state of the upper roller manipulator.
[0022] By adopting the above technical solution, the upper roller robot lifts the roll and moves it to the position of the second electric push rod. The controller controls the second electric push rod to retract, and the upper roller robot places the roll at the coaxial position of the second electric push rod. Then, the upper roller robot controls the extension of the second electric push rod so that the movable end of the second electric push rod is inserted into the inner hole of the roll, thus realizing the automated loading of the roll.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] By setting up metering, cutting, and connecting components, the paper tape cutting and roll changing are automated, ensuring the accuracy of the paper tape cutting time and the length of the paper tape wound on the paper roll, avoiding rework, and thus facilitating the production of paper rolls.
[0025] By setting a second electric push rod, after the paper roll is produced, the controller controls the second electric push rod to retract, so that the roll roll disengages from the second electric push rod and falls to the bottom of the frame, thus realizing the automated feeding of the paper roll.
[0026] By setting up an upper roller manipulator, the upper roller manipulator lifts the roll and moves it to the position of the second electric push rod. The controller controls the second electric push rod to retract, and the upper roller manipulator places the roll at the coaxial position of the second electric push rod. Then, the upper roller manipulator controls the extension of the second electric push rod so that the movable end of the second electric push rod is inserted into the inner hole of the roll, thus realizing the automated upper roller loading of the roll. Attached Figure Description
[0027] Figure 1 This is a cross-sectional view of the roller according to an embodiment of this application;
[0028] Figure 2 This embodiment of the application is used to illustrate a schematic diagram of the first motor structure;
[0029] Figure 3 This embodiment of the application is used to illustrate a schematic diagram of the third motor structure;
[0030] Figure 4 This is a cross-sectional view of an embodiment of this application for showing the first electric actuator.
[0031] Explanation of reference numerals in the attached figures:
[0032] 1. Frame; 11. Rotating frame; 111. First end; 112. Second end; 113. Third end; 12. First motor; 13. Second motor; 14. Slide groove; 15. Second electric push rod; 16. Upper roller robot;
[0033] 2. Roller; 21. Drum; 22. Keyway; 23. Counterweight;
[0034] 3. Metering component; 31. Driving gear; 32. Driven gear;
[0035] 4. Cutting assembly; 41. Mounting block; 42. Cutting roller; 43. Third motor; 44. Cutting blade;
[0036] 5. Connecting assembly; 51. First electric actuator; 52. Connecting key;
[0037] 6. Transmission components; 61. Crank; 62. Connecting rod; 63. Slider;
[0038] 7. Control components; 71. Displacement sensor; 72. Controller. Detailed Implementation
[0039] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0040] This application discloses a material limiting mechanism for a rewinding machine. (Refer to...) Figure 1 and Figure 2The rewinding machine's material limiting mechanism includes a frame 1 and a winding roller 2. A rotating frame 11 is mounted on the frame 1. The rotating frame 11 consists of two Y-shaped plates and a rotating shaft. The two Y-shaped plates are fixedly mounted at both ends of the rotating shaft. The rotating frame 11 is rotatably connected to the frame 1, and the axis of rotation is horizontal. The three ends of the Y-shaped plates are the first end 111, the second end 112, and the third end 113. A first motor 12 is fixedly mounted on the frame 1. The output shaft of the first motor 12 passes through the frame 1 and is coaxially and fixedly connected to the rotating shaft of the rotating frame 11.
[0041] Reference Figure 1 and Figure 3 The three ends of the Y-shaped plate of the rotating frame 11 are provided with through holes. The frame 1 is provided with a second electric push rod 15. There are three second electric push rods 15, which correspond one-to-one with the three ends of the Y-shaped plate on the rotating frame 11. The second electric push rods 15 are set horizontally. The fixed end of the second electric push rod 15 is fixedly connected to the rotating frame 11, and the movable end of the second electric push rod 15 is inserted into the roller 2.
[0042] Reference Figure 1 The roller 2 has a tubular structure and a keyway 22 is provided on it, which communicates with the inner hole of the roller 2. A counterweight 23 is fixedly installed inside the roller 2, and the counterweight 23 is located on the side of the roller 2 away from the keyway 22. A drum 21 is fixedly installed on the roller 2, and a rubber strip is provided on the drum 21.
[0043] Reference Figure 2 A second motor 13 is fixedly installed on the frame 1, and the second motor 13 is used to drive the roller 2 to rotate.
[0044] Reference Figure 4 A connecting assembly 5 is provided on the frame 1, which includes a first electric push rod 51 and a connecting key 52. The fixed end of the first electric push rod 51 is rotatably disposed inside the frame 1 and is coaxially and fixedly connected to the output shaft of the second motor 13. The movable end of the first electric push rod 51 passes through the frame 1. The connecting key 52 is fixedly disposed on the top of the movable end of the first electric push rod 51 and is used in conjunction with a keyway 22. Keyways 22 are also provided at the three ends of the Y-shaped plate near the first motor 12 and on the frame 1.
[0045] Initially, the second electric push rod 15 on the first end 111 is in an extended state, and the movable end of the second electric push rod 15 is fitted with a winding roller 2. During paper roll production, the first motor 12 drives the rotating frame 11 to rotate, so that the winding roller 2 on the first end 111 is coaxially aligned with the output shaft of the second motor 13. Then, the operator activates the first electric push rod 51, causing it to extend. The movable end of the first electric push rod 51 passes through the inner hole of the winding roller 2, and the connecting key 52 is located in the keyway 22 on the winding roller 2, thus fixing the second motor 13 to the winding roller 2 on the first end 111. It should be noted that under the influence of gravity, the counterweight 23 on the winding roller 2 is always located at the bottom of the winding roller 2, regardless of how the rotating frame 11 rotates, while the keyway 22 is always located at the top of the winding roller 2. Therefore, when the first electric push rod 51 extends, the connecting key 52 can pass through the keyway 22.
[0046] After the second motor 13 is fixedly connected to the winding roller 2 on the first end 111, the second motor 13 starts and drives the first electric push rod 51 to rotate. The connecting key 52 drives the winding roller 2 on the first end 111 to rotate, thereby driving the drum 21 to rotate. One end of the paper strip produced by the paper machine is fixed to the drum 21 by the adhesive strip. The drum 21 rotates, thereby winding the paper strip onto the drum 21.
[0047] Reference Figure 2 and Figure 4 The frame 1 is equipped with a metering component 3, which includes a driving gear 31 and a driven gear 32. The driving gear 31 is an incomplete gear and is coaxially and fixedly connected to the output shaft of the second motor 13. The driven gear 32 is located on top of the driving gear 31 and is rotatably connected to the frame 1. The axis of rotation of the driven gear 32 is parallel to the axis of the output shaft of the second motor 13. The driven gear 32 is a complete gear and meshes with the driving gear 31.
[0048] Reference Figure 1 and Figure 3 A cutting assembly 4 is mounted on the frame 1. The cutting assembly 4 includes a mounting block 41, a cutting roller 42, a third motor 43, and a cutter 44. The mounting block 41 is slidably mounted on the frame 1, and its sliding axis is horizontal. The cutting roller 42 is rotatably mounted on the mounting block 41, and its axis is parallel to the output shaft axis of the second motor 13. A rubber strip is also provided on the cutting roller 42. The third motor 43 is fixedly mounted on the mounting block 41, and its output shaft is coaxially and fixedly connected to the cutting roller 42. The cutter 44 is fixedly mounted on the cutting roller 42.
[0049] Reference Figure 2 and Figure 3A transmission assembly 6 is mounted on the frame 1. The transmission assembly 6 includes a crank 61, a connecting rod 62, and a slider 63. One end of the crank 61 is fixedly connected to the driven gear 32. One end of the connecting rod 62 is hinged to the crank 61, and the hinge axis is parallel to the rotation axis of the driven gear 32. A slide groove 14 is provided on the frame 1, and the slider 63 is slidably disposed in the slide groove 14, with its sliding axis lying in the same horizontal plane as the rotation axis of the driven gear 32. The end of the connecting rod 62 away from the crank 61 is hinged to the slider 63, and the hinge axis is parallel to the rotation axis of the driven gear 32. The hinge axis of the connecting rod 62 and the slider 63 is lying in the same horizontal plane as the rotation axis of the driven gear 32. The crank 61, connecting rod 62, and slider 63 form a concentric crank-slider mechanism.
[0050] Reference Figure 1 and Figure 2 A control component 7 is mounted on the frame 1. The control component 7 includes a displacement sensor 71 and a controller 72. The displacement sensor 71 is disposed within the slide groove 14 and is fixedly connected to the side wall of the slide groove 14 near the second motor 13. The displacement sensor 71 is used to detect the position information of the slider 63 and convert it into a position signal, which is then input to the controller 72. The controller 72 is fixedly mounted on the frame 1 and is electrically connected to the displacement sensor 71, the first motor 12, the second motor 13, the third motor 43, the first electric push rod 51, and the second electric push rod 15. The controller 72 is used to receive the position signal transmitted by the displacement sensor 71 and control the working state of the first motor 12, the second motor 13, the third motor 43, the first electric push rod 51, and the second electric push rod 15.
[0051] Reference Figure 2 and Figure 3 The frame 1 is equipped with an upper roller manipulator 16. The base of the upper roller manipulator 16 is fixedly connected to the frame 1. The upper roller manipulator 16 is used to pass the roller 2 through the movable end of the second electric push rod 15.
[0052] During the paper roll production process, when the second motor 13 drives the winding roller 2 at the first end 111 to rotate, the driving gear 31 rotates, which in turn drives the driven gear 32 to rotate. When the driving gear 31 rotates one revolution, the driven gear 32 rotates by an angle of 360° divided by the number of teeth of the driven gear 32. When the driven gear 32 rotates, it drives the crank 61 to rotate, which in turn drives the slider 63 to reciprocate through the connecting rod 62. The slider 63 drives the mounting block 41 and the cutting roller 42 to move.
[0053] Initially, the cutting roller 42 abuts against the winding roller 2 at the first end 111. When the second motor 13 drives the winding roller 2 to rotate and begin winding the paper tape onto the roll 21, the slider 63 drives the mounting block 41 and the cutting roller 42 to move away from the winding roller 2. When the second motor 13 drives the winding roller 2 to rotate a certain number of times, and the amount of paper tape wound on the roll 21 reaches a suitable value, the slider 63 drives the mounting block 41 and the cutting roller 42 to move closer to the winding roller 2, and the cutting roller 42 abuts against the paper tape. The paper tape is then subjected to the action of the adhesive strip on the cutting roller 42. When the slider 63 is attached to the cutting roller 42, the displacement sensor 71 detects the position information of the slider 63. When the displacement sensor 71 detects that the distance between the slider 63 and itself gradually decreases and reaches the preset value, the controller 72 first controls the third motor 43 to rotate, thereby driving the cutting roller 42 to rotate, so that the cutter 44 moves towards the paper tape to cut the paper tape between the cutting roller 42 and the winding roller 2 on the first end 111. Then the third motor 43 drives the cutting roller 42 to rotate in the opposite direction, so that the cutter 44 is reset.
[0054] After the paper tape is cut, the controller 72 controls the first electric push rod 51 to retract. The movable end of the first electric push rod 51 and the connecting key 52 slide away from the winding roller 2 on the first end 111, so that the second motor 13 is disconnected from the winding roller 2 on the first end 111. After the first electric push rod 51 retracts, the controller 72 starts the first motor 12, which drives the rotating frame 11 to rotate, thereby causing the roller 2 on the first end 111, which is full of paper tape, to rotate downwards. The roller 2 on the second end 112 is rotated to be coaxial with the output shaft of the second motor 13, and the third end 113 at the bottom rotates upwards to the side of the upper roller robot 16. The controller 72 controls the second electric push rod 15 on the first end 111 to retract, so that the roller 2 on the first end 111, which is full of paper tape, falls to the bottom of the frame 1. At the same time, the controller 72 controls the upper roller robot 16 and the second electric push rod 15 on the third end 113 to start working simultaneously. The upper roller robot 16 places the roller 2 to be installed at a position coaxial with the second electric push rod 15 on the third end 113. The second electric push rod 15 extends, and the movable end of the second electric push rod 15 is inserted into the inner hole of the roller 2 to be installed.
[0055] Then, the controller 72 controls the second motor 13 to rotate. At this time, the second motor 13 is not connected to the winding roller 2 on the second end 112. The rotation of the second motor 13 drives the driving gear 31 and the driven gear 32 to rotate. Through the centering crank-slider mechanism, the slider 63 continues to slide towards the winding roller 2 on the second end 112 until the cutting roller 42 abuts against the winding roller 2 on the second end 112. Under the action of the adhesive strip on the winding roller 2, one end of the paper strip produced by the papermaking machine is adhered to the winding roller 2 on the second end 112. Then, the controller 72 controls the first electric push rod 51 to extend, so that the movable end of the first electric push rod 51 passes through the inner hole of the winding roller 2 on the second end 112, and the connecting key 52 is inserted into the keyway 22 on the winding roller 2 on the second end 112, so that the second motor 13 is fixed to the winding roller 2 on the second end 112. The controller 72 controls the second motor 13 to start, and the production of the paper roll can continue.
[0056] It should be noted that since the rotational speeds of the first motor 12, the second motor 13, and the third motor 43 are constant, and the extension and retraction speeds of the first electric push rod 51 and the second electric push rod 15 are constant, the controller 72 can adjust the working states of the first motor 12, the second motor 13, the third motor 43, the first electric push rod 51, and the second electric push rod 15 by setting a delay.
[0057] The implementation principle of a material limiting mechanism for a rewinding machine according to an embodiment of this application is as follows:
[0058] During paper roll production, the first motor 12 drives the rotating frame 11 to rotate, so that the rolling roller 2 on the first end 111 is coaxially set with the output shaft of the second motor 13. Then, the operator starts the first electric push rod 51, which extends the first electric push rod 51. The movable end of the first electric push rod 51 passes through the inner hole of the rolling roller 2. The connecting key 52 is located in the keyway 22 on the rolling roller 2, so that the second motor 13 is fixedly connected to the rolling roller 2 on the first end 111.
[0059] Then, the second motor 13 starts and drives the first electric push rod 51 to rotate. The connecting key 52 drives the roller 2 on the first end 111 to rotate, thereby driving the drum 21 to rotate. One end of the paper strip produced by the paper machine is fixed to the drum 21 by the adhesive strip. The drum 21 rotates, thereby winding the paper strip onto the drum 21.
[0060] When the second motor 13 drives the winding roller 2 at the first end 111 to rotate, the driving gear 31 rotates, driving the driven gear 32 to rotate, which in turn drives the crank 61 to rotate. The crank 61 drives the slider 63 to reciprocate through the connecting rod 62. The slider 63 drives the mounting block 41 and the cutting roller 42 to reciprocate. When the second motor 13 drives the winding roller 2 at the first end 111 to rotate and begin winding the paper tape onto the roll 21, the slider 63 drives the mounting block 41 and the cutting roller 42 to move away from the winding roller 2 at the first end 111. When the second motor 13 drives the winding roller 2 at the first end 111 to rotate a certain number of revolutions, and the amount of paper tape wound on the roll 21 reaches a suitable value, the slider 63 drives the mounting block 41 and the cutting roller 42 to move closer to the winding roller 2 at the first end 111, and the cutting roller 42 comes into contact with the paper tape, with the paper tape adhered to the cutting roller 42. Under the action of the sensor, the slider 63 is adhered to the cutting roller 42. During this process, the displacement sensor 71 detects the position information of the slider 63. When the displacement sensor 71 detects that the distance between the slider 63 and itself gradually decreases and reaches the preset value, the controller 72 first controls the third motor 43 to rotate, thereby driving the cutting roller 42 to rotate, so that the cutter 44 moves towards the paper tape to cut the paper tape between the cutting roller 42 and the winding roller 2 on the first end 111. Then the third motor 43 drives the cutting roller 42 to rotate in the opposite direction, so that the cutter 44 is reset.
[0061] After the paper tape is cut, the controller 72 controls the first electric push rod 51 to retract. The movable end of the first electric push rod 51 and the connecting key 52 slide away from the winding roller 2 on the first end 111, so that the second motor 13 is disconnected from the winding roller 2 on the first end 111. After the first electric push rod 51 retracts, the controller 72 starts the first motor 12, which drives the rotating frame 11 to rotate, thereby causing the roller 2 on the first end 111, which is full of paper tape, to rotate downwards. The roller 2 on the second end 112 is rotated to be coaxial with the output shaft of the second motor 13, and the third end 113 at the bottom rotates upwards to the side of the upper roller robot 16. The controller 72 controls the second electric push rod 15 on the first end 111 to retract, so that the roller 2 on the first end 111, which is full of paper tape, falls to the bottom of the frame 1. At the same time, the controller 72 controls the upper roller robot 16 and the second electric push rod 15 on the third end 113 to start working simultaneously. The upper roller robot 16 places the roller 2 to be installed at a position coaxial with the second electric push rod 15 on the third end 113. The second electric push rod 15 extends, and the movable end of the second electric push rod 15 is inserted into the inner hole of the roller 2 to be installed.
[0062] Then, the controller 72 controls the second motor 13 to rotate. At this time, the second motor 13 is not connected to the winding roller 2 on the second end 112. The rotation of the second motor 13 drives the driving gear 31 and the driven gear 32 to rotate. Through the centering crank-slider mechanism, the slider 63 continues to slide towards the winding roller 2 on the second end 112 until the cutting roller 42 abuts against the winding roller 2 on the second end 112. Under the action of the adhesive strip on the winding roller 2, one end of the paper strip produced by the papermaking machine is adhered to the winding roller 2 on the second end 112. Then, the controller 72 controls the first electric push rod 51 to extend, so that the movable end of the first electric push rod 51 passes through the inner hole of the winding roller 2 on the second end 112, and the connecting key 52 is inserted into the keyway 22 on the winding roller 2 on the second end 112, so that the second motor 13 is fixed to the winding roller 2 on the second end 112. The controller 72 controls the second motor 13 to start, and the production of the paper roll can continue.
[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A material limiting mechanism for a rewinding machine, characterized in that: The assembly includes a frame (1), a roller (2), a metering component (3), a cutting component (4), and a connecting component (5); a rotating frame (11) is rotatably mounted on the frame (1); a first motor (12) is fixedly mounted on the frame (1), which drives the rotating frame (11) to rotate; at least two rollers (2) are provided, and both are rotatably mounted on the rotating frame (11); a roller drum (21) is fixedly mounted on the roller (2), and a rubber strip is provided on the roller drum (21); a second motor (13) is fixedly mounted on the frame (1), which drives the roller (2) to rotate. The metering component (3) includes a driving gear (31) and a driven gear (32); the driving gear (31) is an incomplete gear, and the driving gear (31) is coaxially fixedly connected to the output shaft of the second motor (13); the driven gear (32) is rotatably mounted on the frame (1), and the driven gear (32) meshes with the driving gear (31); the cutting component (4) is mounted on the frame (1) and is used to cut the paper tape and fix the cut paper tape; the connecting component (5) is mounted on the frame (1) and is used to adjust the second motor (13) and the winding roller (2). Connection status; the cutting assembly (4) includes a mounting block (41), a cutting roller (42), a third motor (43), and a cutter (44); the mounting block (41) is slidably mounted on the frame (1); the cutting roller (42) is rotatably connected to the mounting block (41), and a rubber strip is also provided on the cutting roller (42); the third motor (43) is used to drive the cutting roller (42) to rotate; the cutter (44) is fixedly mounted on the cutting roller (42); a transmission assembly (6) is provided on the frame (1), and the transmission assembly (6) is used to transmit the rotation of the driven gear (32) to the mounting block (41). The frame (1) is equipped with a control component (7) for controlling the working state of the third motor (43); the transmission component (6) includes a crank (61), a connecting rod (62) and a slider (63); the crank (61) is fixedly connected to the driven gear (32); one end of the connecting rod (62) is hinged to the crank (61); a slide groove (14) is provided on the frame (1); the slider (63) is slidably disposed in the slide groove (14), and the end of the connecting rod (62) away from the crank (61) is hinged to the slider (63).
2. The rewinding machine material limiting mechanism according to claim 1, characterized in that: The control component (7) includes a displacement sensor (71) and a controller (72); the displacement sensor (71) is fixedly installed in the slide (14), and the displacement sensor (71) is used to detect the position information of the slider (63) and convert it into a position signal input to the controller (72); the controller (72) is fixedly installed on the frame (1), and the controller (72) is electrically connected to the displacement sensor (71) and the third motor (43). The controller (72) is used to receive the position signal transmitted by the displacement sensor (71) and control the working state of the third motor (43).
3. The rewinding machine material limiting mechanism according to claim 2, characterized in that: The connecting component (5) includes a first electric push rod (51) and a connecting key (52); the fixed end of the first electric push rod (51) is coaxially and fixedly connected to the output shaft of the second motor (13); the roller (2) is a tubular structure, and a keyway (22) is provided on the roller (2); the connecting key (52) is fixedly disposed on the movable end of the first electric push rod (51), and the connecting key (52) is adapted to the keyway (22); the controller (72) is electrically connected to both the first electric push rod (51) and the first motor (12), and the controller (72) is also used to control the working state of the first electric push rod (51) and the first motor (12).
4. The rewinding machine material limiting mechanism according to claim 3, characterized in that: The connecting key (52) is fixedly installed on the top of the movable end of the first electric push rod (51); a counterweight (23) is fixedly installed on the roller (2), and the counterweight (23) is located on the side of the roller (2) away from the keyway (22).
5. The rewinder material limiting mechanism according to claim 3, characterized in that: The frame (1) is provided with a second electric push rod (15). There are at least two second electric push rods (15). The fixed end of the second electric push rod (15) is fixedly connected to the rotating frame (11). The movable end of the second electric push rod (15) passes through the roller (2). The roller (2) and the movable end of the second electric push rod (15) can rotate relative to each other. The second electric push rod (15) is electrically connected to the controller (72). The controller (72) is also used to control the working state of the second electric push rod (15).
6. The rewinder material limiting mechanism according to claim 5, characterized in that: An upper roller manipulator (16) is fixedly installed on the frame (1). The upper roller manipulator (16) is used to pass the roller (2) through the movable end of the second electric push rod (15). The upper roller manipulator (16) is electrically connected to the controller (72). The controller (72) is also used to control the working state of the upper roller manipulator (16).
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