Self-adaptive unwinding device

Abstract

The utility model relates to the technical field of coiled material processing, and provides a self-adaptive unwinding device. The unwinding device comprises a rack, an unwinding roller rotationally connected to the rack, a driving motor for driving the unwinding roller to rotate, a clutch arranged between the unwinding roller and the driving motor, a plurality of conveying rollers rotationally connected to the rack, a pressure sensor arranged on the rack and a tensioning roller rotationally connected to a strain gauge of the pressure sensor. A central control platform used for processing data collected by the pressure sensor is arranged on the machine frame, the central control platform is electrically connected with a controller used for executing instructions sent after the central control platform processes the collected data, and the driving motor and the clutch are both electrically connected to the controller. The coiled material slitting device has the beneficial effect that the influence on the coiled material slitting efficiency is reduced.

Description

Technical Field

[0001] This application relates to the technical field of roll material processing, and in particular to an adaptive unwinding device. Background Technology

[0002] A slitting machine is a mechanical device that cuts wide sheets of paper, mica tape, or film into multiple narrow strips. It is commonly used in papermaking machinery, wire and cable mica tape, and printing and packaging machinery. During the slitting process, the wide sheets of paper, mica tape, or film need to be unwound using an unwinding device. Existing unwinding devices typically include an unwinding roller through which the roll is threaded, a drive motor that drives the unwinding roller to rotate, and a conveyor roller for conveying the roll. The other end of the roll after being cut by the slitting machine is wound up by a take-up roller, which is also wound up by a drive motor.

[0003] During the slitting process, the resistance applied to the roll material causes changes in the tension between the slit and unslit rolls. Insufficient tension can lead to slack, while excessive tension can cause the roll to stretch and deform, both of which are detrimental to slitting and thus affect slitting efficiency. Therefore, further improvements are needed. Utility Model Content

[0004] To reduce the impact on the slitting efficiency of the roll material, this application provides an adaptive unwinding device.

[0005] This application provides an adaptive unwinding device, which adopts the following technical solution:

[0006] An adaptive unwinding device includes a frame, an unwinding roller rotatably connected to the frame, a drive motor for driving the unwinding roller to rotate, a clutch disposed between the unwinding roller and the drive motor, a plurality of conveying rollers rotatably connected to the frame, a pressure sensor disposed on the frame, and a tensioning roller rotatably connected to a strain gauge of the pressure sensor. The frame is provided with a central control platform for processing the data collected by the pressure sensor. The central control platform is electrically connected to a controller for executing instructions sent by the central control platform after processing the collected data. The drive motor and the clutch are both electrically connected to the controller.

[0007] By adopting the above technical solution, if the roll material is relatively taut during unwinding, a corresponding tension force will be applied to the tension roller. As the resistance of the strain gauge of the pressure sensor changes, the corresponding change data is transmitted to the central control platform for collection and processing. The difference between the data and the expected set tension force is used to calculate the required tension force compensation data. The corresponding command and the required tension force data are then sent to the controller. The controller uses a clutch or drive motor to control the unwinding speed of the unwinding roller, thereby changing the tension force of the roll material. This allows for real-time adjustment based on the tension of the roll material itself, reducing the impact on the slitting efficiency of the roll material.

[0008] Preferably, the outer surface of the tensioning roller is provided with an anti-slip layer.

[0009] By adopting the above technical solution, and coordinating with the clutch to control the unwinding speed of the unwinding roller, and by setting an anti-slip layer to apply a certain resistance to the roll material wound on the tension roller, the possibility of the roll material becoming too loose when the unwinding speed is controlled too fast is reduced.

[0010] Preferably, both the frame and the clutch are provided with a connecting shaft connected to the unwinding roller. The connecting shaft on the frame is rotatably connected to the frame. Both ends of the unwinding roller are provided with connecting parts, and both ends of the unwinding roller are detachably connected to the connecting shafts at both ends through the connecting parts.

[0011] By adopting the above technical solution, and by setting up a connector, the unwinding roller can be disassembled and replaced with a new roll material for re-cutting.

[0012] Preferably, the connector includes a connecting bolt passing through the connecting shaft and a connecting nut threaded to the connecting bolt. The outer peripheral wall of the unwinding roller has a slot for inserting the connecting shaft. The slot extends to the opposite end faces of the unwinding roller. The connecting bolt passes through the unwinding roller.

[0013] By adopting the above technical solution, the connecting shaft is first inserted into the slot, and then the connecting bolt is threaded through the connecting shaft, the unwinding shaft, and the connecting nut to install the unwinding roller on the connecting shafts on both sides. The connection is relatively simple and stable.

[0014] Preferably, the unwinding roller is coaxially sleeved with a sleeve, the roll material is wound around the sleeve, and the unwinding roller is provided with a limiting member to restrict the rotation of the sleeve. The limiting member includes an elastic protrusion, which abuts against the inner peripheral wall of the sleeve.

[0015] By adopting the above technical solution, elastic protrusions are set to abut against the inner circumferential wall of the sleeve to apply resistance, thereby reducing the possibility of relative rotation between the sleeve with the wound material and the unwinding roller during the unwinding process, which would affect the subsequent control of the tension of the material and thus reduce the impact on the slitting efficiency of the slitting machine.

[0016] Preferably, both ends of the unwinding roller are provided with mounting grooves along their own axes, the mounting grooves are connected to the slot, the limiting member includes a sliding column installed with the elastic protrusion and a push rod disposed in the mounting groove, the outer peripheral wall of the unwinding roller is provided with a sliding groove connected to the mounting groove, the sliding column is slidably inserted into the sliding groove, the lower end of the sliding column extends to the mounting groove, the end face of the push rod near the sliding column is provided with a guide surface, the sliding column abuts against the guide surface, and the end of the push rod away from the guide surface abuts against the connecting shaft.

[0017] By adopting the above technical solution, as the push rod is pushed, the elastic protrusion is pressed against the inner wall of the sleeve to restrict relative rotation of the sleeve, thereby reducing the possibility of loosening due to the interference fit between the elastic protrusion and the sleeve. Furthermore, since the mounting groove extends into the slot, after the connection between the connecting shaft and the unwinding roller is established, the possibility of the push rod slipping along the length of the mounting groove is limited.

[0018] Preferably, a plurality of elastic protrusions are provided along the length direction of the unwinding roller, the number of sliding columns corresponds to the number of elastic protrusions, the mounting groove is provided in a stepped groove in the direction away from the connecting shaft, and the length of the plurality of sliding grooves gradually increases in the direction away from the connecting shaft.

[0019] By adopting the above technical solution, several elastic protrusions are provided along the length of the unwinding roller to restrict the corresponding length of the sleeve used for different lengths of roll material, thereby adapting to roll material of different lengths and improving the adaptability of the unwinding roller.

[0020] Preferably, the inner wall of the sleeve is provided with a groove for the elastic protrusion to be engaged.

[0021] By adopting the above technical solution and by setting the groove, the sleeve can be centered while restricting the rotation of the unwinding roller.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. If the roll material is relatively taut during unwinding, a corresponding tension force will be applied to the tension roller. As the resistance of the strain gauge of the pressure sensor changes, the corresponding change data is transmitted to the central control platform for collection and processing. The difference between this data and the expected set tension force is used to calculate the required tension compensation data. The corresponding command and the required tension data are then sent to the controller. The controller uses the clutch or drive motor to control the unwinding speed of the unwinding roller, thereby changing the tension of the roll material. This allows for real-time adjustment based on the roll material's own tension, reducing the impact on the roll material's slitting efficiency.

[0024] 2. By setting a limiting component to restrict the rotation of the sleeve, the possibility of relative rotation between the sleeve with the wound material and the unwinding roller during the unwinding process can be reduced, thereby affecting the subsequent control of the tension of the material and thus reducing the impact on the slitting efficiency of the slitting machine. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0026] Figure 2 This is a schematic diagram of the connector structure in Embodiment 1 of this application;

[0027] Figure 3 This is a schematic diagram of the limiting component in Embodiment 2 of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Central control platform; 12. Mounting plate; 13. Connecting shaft; 2. Unwinding roller; 21. Sleeve; 211. Groove; 22. Slot; 23. Mounting groove; 24. Slide groove; 3. Drive motor; 4. Clutch; 5. Conveying roller; 6. Pressure sensor; 7. Tensioning roller; 71. Anti-slip layer; 8. Connecting component; 81. Connecting bolt; 82. Connecting nut; 9. Limiting component; 91. Elastic protrusion; 92. Sliding column; 93. Push rod; 931. Guide surface. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail below.

[0030] This application discloses an adaptive unwinding device.

[0031] Example 1:

[0032] An adaptive unwinding device, referring to Figure 1 , Figure 2The system includes a frame 1, an unwinding roller 2 rotatably connected to the frame 1, a drive motor 3 for driving the unwinding roller 2, a clutch 4 disposed between the unwinding roller 2 and the drive motor 3, several conveying rollers 5 rotatably connected to the frame 1, a pressure sensor 6 disposed on the frame 1, and a tensioning roller 7 rotatably connected to the strain gauge of the pressure sensor 6. The frame 1 is equipped with a central control platform 11 for processing the data collected by the pressure sensor 6. The central control platform 11 is electrically connected to a controller (not shown in the figure) that executes the instructions sent by the central control platform 11 after processing the collected data. The drive motor 3 and the clutch 4 are both electrically connected to the controller.

[0033] In this embodiment, a mounting plate 12 for mounting the clutch 4 and the drive motor 3 is fixedly protruding from one side of the frame 1. For winding the roll material, a sleeve 21 is coaxially sleeved on the outer peripheral wall of the unwinding roller 2, and the roll material is wound around the outer peripheral wall of the sleeve 21. For unwinding the roll material, the roll material is wound in an S-shape around several conveying rollers 5 and tensioning rollers 7 for unwinding.

[0034] Both the frame 1 and the clutch 4 are equipped with connecting shafts 13 that connect to the unwinding roller 2. The connecting shafts 13 on the frame 1 are rotatably connected to the frame 1. Both ends of the unwinding roller 2 are equipped with connecting parts 8, and both ends of the unwinding roller 2 are detachably connected to the connecting shafts 13 at both ends through the connecting parts 8. The connecting parts 8 specifically include connecting bolts 81 that pass through the connecting shafts 13 and connecting nuts 82 that are threaded to the connecting bolts 81. The outer peripheral wall of the unwinding roller 2 has slots 22 for the connecting shafts 13 to be inserted. The slots 22 extend to the opposite end faces of the unwinding roller 2, and the connecting bolts 81 pass through the unwinding roller 2.

[0035] The unwinding roller is provided with a limiting component to restrict the rotation of the sleeve. In this embodiment, the limiting component is specifically an elastic protrusion. The elastic protrusion can be made of elastic plastic or rubber, depending on the requirements. The elastic protrusion abuts against the inner circumferential wall of the sleeve. Several elastic protrusions are spaced apart along the axis of the unwinding roller and several are spaced apart around the length direction of the unwinding roller. The number is specifically set according to the requirements.

[0036] The outer surface of the tension roller 7 is provided with an anti-slip layer 71. The anti-slip layer 71 can be a textured elastic pad or made of wool with a certain thickness. The specific configuration is determined according to the requirements. It can provide a certain resistance while smoothing out the surface.

[0037] The implementation principle of the adaptive unwinding device in this application embodiment is as follows: If the roll material is relatively tight during the unwinding process, a corresponding tension force will be applied to the tension roller 7. As the resistance of the strain gauge of the pressure sensor 6 changes, the corresponding change data is transmitted to the central control platform 11 for collection and processing. The difference between the data and the expected set tension force is used to calculate the required tension force compensation data. The corresponding command and the required tension force data are then sent to the controller. The controller causes the clutch 4 or the drive motor 3 to control the unwinding speed of the unwinding roller 2, thereby changing the tension force of the roll material. This allows for real-time adjustment based on the tension of the roll material itself, reducing the impact on the slitting efficiency of the roll material.

[0038] Example 2:

[0039] Reference Figure 3 The difference from Embodiment 1 is that both ends of the unwinding roller 2 are provided with mounting grooves 23 along their own axes. The mounting grooves 23 are connected to the slot 22. In this embodiment, the limiting member 9 includes a sliding column 92 installed with the elastic protrusion 91 and a push rod 93 provided in the mounting groove 23. The outer peripheral wall of the unwinding roller 2 is provided with a sliding groove 24 connected to the mounting groove 23. The sliding column 92 is slidably inserted into the sliding groove 24. The lower end of the sliding column 92 extends to the mounting groove 23. The end face of the push rod 93 near the sliding column 92 is provided with a guide surface 931. The lower end of the sliding column 92 is rotatably connected with a ball bearing. The ball bearing abuts against the guide surface 931. The end of the push rod 93 away from the guide surface 931 abuts against the connecting shaft 13.

[0040] The number of sliding columns 92 corresponds to the number of elastic protrusions 91. The mounting groove 23 is set in a stepped groove in the direction away from the connecting shaft 13. The length of several sliding grooves 24 gradually increases in the direction away from the connecting shaft 13. The length of the push rod 93 is set accordingly. As the length of the push rod 93 increases, the width of the push rod 93 itself gradually decreases. In this embodiment, the inner wall of the sleeve 21 is provided with a groove 211 for the elastic protrusions 91 to be inserted, so that the sleeve 21 can be centered while restricting the rotation of the unwinding roller 2.

[0041] Compared to the sliding insertion of the bracket, the interference fit between the elastic protrusion 91 and the sleeve 21 can reduce the possibility of loosening between the sleeve 21 and the elastic protrusion 91 after multiple pulls and pulls of the elastic protrusion 91.

[0042] 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. An adaptive unwinding device, characterized in that: The device includes a frame (1), an unwinding roller (2) rotatably connected to the frame (1), a drive motor (3) for driving the unwinding roller (2) to rotate, a clutch (4) disposed between the unwinding roller (2) and the drive motor (3), several conveying rollers (5) rotatably connected to the frame (1), a pressure sensor (6) disposed on the frame (1), and a tensioning roller (7) rotatably connected to the pressure sensor (6). The frame (1) is provided with a central control platform (11) for processing the data collected by the pressure sensor (6). The central control platform (11) is electrically connected to a controller that executes the instructions sent by the central control platform (11) after processing the collected data. The drive motor (3) and the clutch (4) are both electrically connected to the controller.

2. The adaptive unwinding device according to claim 1, characterized in that: The outer surface of the tension roller (7) is wrapped with an anti-slip layer (71).

3. The adaptive unwinding device according to claim 1, characterized in that: Both the frame (1) and the clutch (4) are provided with a connecting shaft (13) connected to the unwinding roller (2). The connecting shaft (13) on the frame (1) is rotatably connected to the frame (1). Both ends of the unwinding roller (2) are provided with connecting parts (8). Both ends of the unwinding roller (2) are detachably connected to the connecting shafts (13) at both ends through the connecting parts (8).

4. The adaptive unwinding device according to claim 3, characterized in that: The connector (8) includes a connecting bolt (81) passing through the connecting shaft (13) and a connecting nut (82) threaded to the connecting bolt (81). The outer peripheral wall of the unwinding roller (2) is provided with a slot (22) for the connecting shaft (13) to be inserted. The slot (22) extends to the opposite end faces of the unwinding roller (2). The connecting bolt (81) passes through the unwinding roller (2).

5. The adaptive unwinding device according to claim 4, characterized in that: The unwinding roller (2) is coaxially fitted with a sleeve (21), the sleeve (21) is used for winding the roll material, and the unwinding roller (2) is provided with a limiting member (9) to restrict the rotation of the sleeve (21). The limiting member (9) includes an elastic protrusion (91), the elastic protrusion (91) abuts against the inner peripheral wall of the sleeve (21).

6. The adaptive unwinding device according to claim 5, characterized in that: The unwinding roller (2) has mounting grooves (23) on both ends along its own axis. The mounting grooves (23) are connected to the slot (22). The limiting member (9) includes a sliding column (92) installed with the elastic protrusion (91) and a push rod (93) set in the mounting groove (23). The outer peripheral wall of the unwinding roller (2) has a sliding groove (24) connected to the mounting groove (23). The sliding column (92) is slidably inserted into the sliding groove (24). The lower end of the sliding column (92) extends to the mounting groove (23). The end face of the push rod (93) near the sliding column (92) has a guide surface (931). The sliding column (92) abuts against the guide surface (931). The end of the push rod (93) away from the guide surface (931) abuts against the connecting shaft (13).

7. The adaptive unwinding device according to claim 6, characterized in that: The elastic protrusions (91) are arranged in a plurality of positions along the length of the unwinding roller (2). The number of sliding columns (92) corresponds to the number of elastic protrusions (91). The mounting groove (23) is arranged in a stepped groove in a direction away from the connecting shaft (13). The length of the plurality of sliding grooves (24) gradually increases in a direction away from the connecting shaft (13).

8. An adaptive unwinding device according to claim 6, characterized in that: The inner wall of the sleeve (21) is provided with a groove (211) for the elastic protrusion (91) to be engaged.

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