Reversing speed limiter for master roll and automatic equipment for cutting tape from master roll

Abstract

The application provides a reverse speed limiting device for master batch rolls and automatic equipment for cutting adhesive tape rolls, the reverse speed limiting device comprises a rotating shaft, a friction mechanism, a rotating main body and a rotating driving unit, the rotating main body is coaxially fixed with the rotating shaft, the friction mechanism is arranged on the outer periphery of the rotating shaft, and the outer periphery of the rotating main body forms a master batch roll mounting position; the friction mechanism comprises a base component, an elastic member and a friction component which abut against each other in sequence along the radial direction of the rotating shaft and in the direction away from the rotating shaft, the friction component is movable along the radial direction relative to the base component; the friction mechanism is adjustably arranged in the rotating main body along the radial direction, and the friction surface of the friction component extends to the master batch roll mounting position. The automatic equipment for cutting adhesive tape rolls comprises a driving roller group and the reverse speed limiting device; the reverse speed limiting device adopts the reverse speed limiting device described above. The application can cooperate with various master batch rolls and meet the requirements of various tightness degrees, can provide more accurate reverse torque meeting the requirements for master batch rolls of various sizes, and has better applicability.

Description

Technical Field

[0001] This invention relates to the field of tape printer consumables manufacturing, specifically to a reverse speed limiting device for masterbatch rolls and an automated tape slitting and rolling equipment. Background Technology

[0002] When producing tape cartridges for tape printers, an automated tape slitting and rewinding machine is used to draw out, slit, and wind the tape from the master roll onto a winding shaft, which is then installed into the cartridge body. The master roll is detachably mounted on the shaft of the automated machine. The machine has a pair of roller sets. The tape drawn from the master roll passes through the clamping points between the roller sets, one of which is a drive roller. The rotation of the drive roller generates sufficient tension to ensure continuous tape feeding from the master roll.

[0003] Generally, automated equipment also includes speed limiting devices to restrict the rotational speed of the master stock, ensuring the tension of the lead-out conveyor belt and preventing it from slipping off, which could affect the normal operation of the equipment and cause safety issues. For example, one type of automated equipment has a motor-driven speed limiting wheel on the outer circumference of the master stock. The speed limiting wheel presses against the conveyor belt of the master stock to limit the speed at which the belt is fed out. The problem with using a speed limiting wheel is that the outer diameter of the master stock gradually decreases as the conveyor belt is fed out, while the speed limiting wheel needs to remain in contact with the outer circumference of the master stock. Therefore, the speed limiting wheel needs to be a movable structure, which complicates the structure and increases the size of the automated equipment. More importantly, its stability is poor, making it difficult to accurately control the rotational speed of the master stock.

[0004] In addition, some existing speed limiting devices used in other equipment, which can be installed at the shaft, include an annular brake concentrically but fixedly mounted on the shaft. Two friction mechanisms, arranged circumferentially opposite each other, are connected to the shaft. Each friction mechanism includes an elastic element and a friction element connected radially to the shaft, with the friction element abutting against the inner circumferential surface of the annular brake. When the shaft rotates, the friction element rotates and rubs against the inner circumferential surface of the annular brake, generating a reverse torque to limit the shaft speed. While this speed limiting device can be installed at the shaft to reduce equipment size and simplify the structure, it lacks the adjustability of the aforementioned speed limiting wheel. Therefore, it is not only unfavorable for more accurate control of the master stock speed but also unable to adapt to various working conditions caused by different cycle times, different tensile forces, or different sizes of master stock. Summary of the Invention

[0005] The primary objective of this invention is to provide a reverse speed limiting device for a masterbatch roll that can be set at the rotating shaft and is adjustable, thereby ensuring more accurate control of the rotational speed of the masterbatch roll and providing better adaptability.

[0006] A second objective of the present invention is to provide an automated tape slitting and rolling device having the aforementioned masterbatch roll reversing speed limiting device.

[0007] The reverse speed limiting device for master stock provided by the first objective of this invention includes a rotating shaft and a friction mechanism, with at least two friction mechanisms disposed on the outer periphery of the rotating shaft; the reverse speed limiting device also includes a rotating body and a rotating drive unit, the rotating drive unit being drively connected to the rotating shaft, the rotating body being coaxially fixed to the rotating shaft, and the outer periphery of the rotating body forming a master stock mounting position; the friction mechanism includes a base component, an elastic element, and a friction component that abut against each other in sequence along the radial direction of the rotating shaft and in a direction opposite to the rotating shaft, the friction component being movable radially relative to the base component; the friction mechanism is radially adjustablely disposed in the rotating body, and the friction mating surface of the friction component extends to the master stock mounting position.

[0008] As can be seen from the above scheme, the reversing speed limiting device is installed at the rotating shaft and used for fixing the master stock. When the master stock is mounted on the reversing speed limiting device, multiple friction components abut against the inner circumferential surface of the master stock under the force of the elastic element. When the master stock is pulled during feeding, the friction mating surfaces of the friction components rub against the inner circumferential surface of the master stock to provide a reverse torque. Furthermore, combined with the reversing drive of the rotation drive unit, a more accurate and stable reverse torque is provided. In addition, since the friction components are elastically movable and the friction mechanism is radially adjustable, the reversing speed limiting device can adjust the radial position of the friction mechanism according to the inner diameter of the master stock and the magnitude of the abutting force, thus meeting the different reverse torque requirements under different working conditions. Furthermore, a detection module for detecting the shaft torque is provided inside the rotation drive unit or between the rotation drive unit and the rotating shaft. The rotation speed of the rotation drive unit can also be adjusted in real time based on the acquired detection data, thereby providing a more accurate reverse torque for the master stock, thus ensuring that the master stock is fed in a taut and stable state.

[0009] A further embodiment is that the reverse speed limiting device also includes a rotary adjustment component; the rotary adjustment component is concentrically arranged and rotatably connected to the rotating body; the rotary adjustment component is provided with a guide groove, which extends around the rotation axis of the rotary adjustment component between the first position and the second position, the first position being farther away from the rotation axis than the second position; the base component is provided with a guide part, which is located in the guide groove.

[0010] As can be seen from the above, the operator only needs to rotate the adjustment component, and the radial movement of the friction mechanism can be caused by the cooperation of the guide groove and the guide part. In addition, since the radial distance between the first position and the second position is small relative to the extension length of the guide groove, the offset of the extension direction of the guide groove is small relative to the circumference of the rotating shaft. Therefore, the guide groove also serves as a self-locking structure to prevent backflow. When the adjustment component is rotated and the radial position of the friction mechanism is adjusted, the radial movement of the friction mechanism will not cause the adjustment component to rotate.

[0011] A further proposed solution is that, on the projection of the rotation axis along the axial direction, the guide groove extends along an arc, with the center of the arc located on the side where the rotation axis is located.

[0012] As can be seen from the above, the curved groove can drive the friction mechanism more smoothly and can form a better self-locking structure.

[0013] A further embodiment is that the reverse speed limiting device also includes an operating component, which is fixedly connected to the rotation adjustment component. The operating component has an operating part on its outer periphery, and the operating part has an operating recess; and / or, the rotation adjustment component has an exposed accessory mounting hole on its outer periphery.

[0014] As can be seen from the above, the design of the operating components makes it easy for staff to operate the rotary adjustment components; while the reserved accessory mounting holes on the outer periphery of the rotary adjustment components can be used to insert handles or other accessories that are more conducive to operating the rotary adjustment components.

[0015] A further embodiment is that the friction mechanism also includes a sliding rod; the sliding rod is disposed between the base component and the friction component, the elastic element is fitted onto the sliding rod, one of the base component and the friction component is fixedly connected to the sliding rod, and the other of the base component and the friction component is radially slidably connected to the sliding rod.

[0016] As can be seen from the above, the sliding rod configuration enables a linear sliding fit between the base component and the friction component, ensuring the linearity of the friction component's movement and the positional accuracy of the friction component after its movement.

[0017] A further proposed solution is that the sliding rod is a screw, which includes a head, a sliding rod section, and a threaded section connected in sequence; the friction component has a first hole section and a second hole section connected in sequence, the inner diameter of the second hole section being smaller than the inner diameter of the first hole section; the base component has a threaded hole; the screw passes through the friction component, the threaded section engages with the threaded hole, the second hole section engages with the sliding rod section, and the head is located inside the first hole section; the first hole section is exposed on the friction mating surface of the friction component.

[0018] As can be seen from the above, this setup not only achieves an elastic movable connection between the friction component and the base component, but also allows adjustment of the initial distance between the friction component and the base component, as well as the initial compression degree of the elastic element, by adjusting the screwing degree of the threaded section and the screw hole on the base component. Combined with the radial position adjustment of the friction mechanism, the reverse speed limiting device can be used with various master stock rolls of different inner diameters and meet various contact degree requirements. Therefore, it can provide the required reverse torque for master stock rolls of various sizes, and has better applicability.

[0019] A further option is to have the rotating shaft arranged vertically; the reverse speed limiting device for the master stock roll also includes a support plate, which is fixedly connected to the rotating shaft and located below the rotating body and the installation position of the master stock roll.

[0020] As can be seen from the above, the reverse speed limiting device is arranged vertically, and the master stock is placed horizontally on the pallet. This arrangement can eliminate the influence of gravity on torque, especially in applications where it is necessary to combine it with a torque detection module located at the shaft or in the rotation drive unit to achieve further precise control.

[0021] A further proposed solution is to have a radially sliding channel inside the rotating body, with the friction mechanism located within the sliding channel; the sliding channel is open on the side facing the support plate.

[0022] As can be seen from the above, the sliding channel not only effectively confines the friction mechanism to a straight line, but the open design of the sliding channel also makes the installation of the friction mechanism easier.

[0023] A further option is to provide a limiting hole on the friction component and / or the base component, with the elastic element located in the limiting hole.

[0024] As can be seen from the above, confining the elastic element in the limiting hole can prevent the elastic element from loosening during device operation and affecting the continuous effectiveness of the elastic force.

[0025] The second objective of this invention is to provide an automated tape slitting and winding equipment, which includes a drive roller assembly and a reverse speed limiting device. The reverse speed limiting device is the same as described above. The drive roller assembly is used to draw material from the master material roll at the master material roll mounting position and force the master material roll to rotate in a first rotation direction. Multiple friction components are used to abut against the inner circumferential surface of the master material roll, and the rotation drive unit is used to drive the reverse speed limiting device to rotate in the opposite direction of the second rotation direction.

[0026] As can be seen from the above scheme, when the master stock is pulled, the friction mating surface of the friction component engages with the inner circumferential surface of the master stock to provide a reverse torque. Furthermore, the reverse drive of the rotation drive unit provides a more accurate and stable reverse torque. In addition, since the friction component is elastically movable and the friction mechanism is radially adjustable, the reverse speed limiting device can adjust the radial position of the friction mechanism according to the inner diameter of the master stock and the magnitude of the contact force, thus meeting the different reverse torque requirements under different working conditions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the first masterbatch roll used in an embodiment of the automated tape slitting and rolling equipment of the present invention.

[0028] Figure 2 This is a structural diagram of an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention and a platform.

[0029] Figure 3 This is a structural diagram of an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0030] Figure 4 This is an exploded view of an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0031] Figure 5 This is a structural diagram of the rotating main body in an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0032] Figure 6 This is a cross-sectional view of the friction mechanism in the first state in an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0033] Figure 7 This is a cross-sectional view of the friction mechanism in the second state in an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0034] Figure 8 This is a cross-sectional view of the friction mechanism in the third state in an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0035] Figure 9 This is a structural diagram of the rotation adjustment component in an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0036] Figure 10 This is a cross-sectional view of an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention.

[0037] Figure 11 This is a schematic diagram of an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention, in conjunction with the first masterbatch roll.

[0038] Figure 12 This is a schematic diagram of an embodiment of the reverse speed limiting device for the masterbatch roll of the present invention, in conjunction with a second masterbatch roll. Detailed Implementation

[0039] See Figure 1 , Figure 1 This is a top-down view illustration. This embodiment describes an automated tape slitting and rolling equipment for processing tape rolls in tape printer consumable cartridges. The equipment includes a reversing speed limiting device 1 and a drive roller group 8. The reversing speed limiting device 1 is located at the shaft of the master roll, and the drive roller group 8, driven by a motor, continuously pulls the tape from the master roll. Figure 1 As shown, Figure 1 The first master stock roll 91 shown is mounted on the reverse speed limiting device 1 and located at the master stock roll mounting position 100 on the outer periphery of the reverse speed limiting device 1. The lead-out end 919 of the first master stock roll 91 is continuously fed out through the drive roller group 8. In fact, Figure 1 As not shown, on the automated tape slitting and winding equipment, there are also some wheel sets or roller sets for tensioning or guiding the tape in the reverse speed limiting device 1 and the drive roller set 8.

[0040] See Figures 2 to 4 The tape slitting and rolling automation equipment also includes a circular platform 73 and support legs 74 for supporting the platform 73. The reverse speed limiting device 1 is vertically arranged in the center of the platform 73. The platform 73 can cooperate with the reverse speed limiting device 1 to support the master material roll located at the master material roll installation position 100.

[0041] The reverse speed limiting device 1 includes a motor 21, a rotating shaft 22, a support plate 23, a rotating body 3, a friction mechanism 4, a rotation adjustment component 5, an operating component 6, a retaining ring 69, a first support frame 71, and a second support frame 72. The motor 21 is the rotation drive unit of the present invention. The second support frame 72 is fixed above the first support frame 71 by four support rods. The vertically arranged motor 21 is fixed to the first support frame 71. The output shaft of the motor 21 passes through the first support frame 71 and is coaxially connected to the rotating shaft 22 through a coupling. The rotating shaft 22 passes through the second support frame 72 from bottom to top, and the rotating shaft 22 and the second support frame 72 are rotatably connected by bearings.

[0042] Both the support plate 23 and the rotating body 3 have a circular outer contour, but the support plate 23 has a larger outer diameter. After the three friction mechanisms 4 are installed in the rotating body 3, the rotating shaft 22 passes through the central through hole of the support plate 23 and the rotating body 3 from bottom to top. Three screws (not shown in the figure) located on the outer periphery of the shaft pass through the countersunk hole of the rotating body 3 and the through hole of the support plate 23 and are screwed into the screw hole of the rotating shaft 22 to achieve a coaxial fixed connection between the rotating shaft 22, the support plate 23 and the rotating body 3. The three friction mechanisms 4 are movably installed in the rotating body 3. In addition, the master material roll mounting position 100 is located on the outer periphery of the rotating body 3, and a part of the support plate 23 is located directly below the master material roll mounting position 100.

[0043] Then, the rotary adjustment component 5 is fitted onto the outside of the rotating shaft 22 and positioned above the rotating body 3. A screw passes through the retaining ring 69 and is screwed into the threaded hole at the top of the rotating shaft 22, thereby rotatably mounting the rotary adjustment component 5 onto the rotating shaft 22. The retaining ring 69 axially blocks the rotary adjustment component 5 to prevent it from loosening. At this time, the rotary adjustment component 5 engages with the guide portion of the friction mechanism 4, and the rotation of the rotary adjustment component 5 causes radial movement of the friction mechanism 4. The operating component 6 is fixedly mounted to the rotary adjustment component 5 with screws for easy operation by the operator.

[0044] See Figure 5 Furthermore, in the axial direction, the rotating body 3 has an upper side 301 and a lower side 302 arranged opposite to each other. The rotating body 3 has three sliding channels 31 arranged along its own axial direction and extending radially. The cross-sectional profile of the sliding channels 31 is approximately square. The sliding channels 31 open onto the lower side 302 to form a lower opening 312. In addition, as... Figure 5As shown, the sliding channel 31 has a top wall opposite the lower opening 312 in the height direction. A connecting hole 311 is formed on the top wall, which connects to the upper side 301. The connecting hole 311 extends into an elongated shape along the extension direction of the sliding channel 31. The extended end of the sliding channel 31 connects to the outlet 310 of the sliding channel 31 formed by the first outer peripheral surface 309 of the rotating body 3.

[0045] See Figure 4 and Figure 6 The friction mechanism 4 includes a base component 41, a friction component 42, a screw 43, and a pressure spring 44, wherein the screw 43 is a sliding rod of the present invention, and the pressure spring 44 is an elastic component of the present invention. The base component 41 includes a base 411 with a blocky outline and a cylinder 412 extending upward from the upper end surface of the base 411, the cylinder 412 being a guide portion of the present invention; the base 411 is provided with a first limiting hole 414 and a screw hole 413 that are sequentially connected in the horizontal direction and in the direction away from the friction component 42, the diameter of the first limiting hole 414 being larger than the diameter of the screw hole 413.

[0046] The friction component 42 is generally block-shaped. Horizontally, it has a friction mating surface 429 facing away from the base component 41. The friction mating surface 429 is a convex arc surface, appearing as a convex arc when viewed from above. The friction component 42 has a first hole segment 421, a second hole segment 422, and a second limiting hole 423 connected sequentially along the horizontal direction and close to the base component 41. The inner diameters of both the first hole segment 421 and the second limiting hole 423 are larger than the inner diameter of the second hole segment 422, and the inner diameter of the second limiting hole 423 is equal to the inner diameter of the first limiting hole 414. The inlet 420 of the first hole segment 421 is formed on the friction mating surface 429. The screw 43 includes a head 431, a sliding section 432, and a threaded section 433 connected sequentially.

[0047] The components of the friction mechanism 4 can be pre-assembled and fixed as a whole. The screw 43 is inserted into the friction component 42 through the inlet 420 at the friction mating surface 429 and then passes through the pressure spring 44 before being fixedly connected to the base component 41. After the friction mechanism 4 is assembled, the threaded section 433 is threaded into the threaded hole 413, the head 431 is located in the first hole section 421, the second hole section 422 is slidably engaged with the sliding rod section 432, the pressure spring 44 is fitted outside the sliding rod section 432 and abuts against the base component 41 and the friction component 42, and the two ends of the pressure spring 44 are respectively located in the first limiting hole 414 and the second limiting hole 423.

[0048] Friction mechanism 4 has the following two characteristics. (Comparison) Figure 6 and Figure 7First, the friction component 42 can move linearly relative to the base component 41, and the pressure spring 44 is compressed as the friction component 42 moves and gradually approaches the base component 41. (Comparison) Figure 6 and Figure 8 Secondly, the initial distance between the friction component 42 and the base component 41, as well as the initial compression degree of the pressure spring 44, can be adjusted by adjusting the degree of screwing of the threaded section 433 into the threaded hole on the base component 41.

[0049] See Figure 9 The rotary adjustment component 5 is provided with three curved grooves 51 evenly arranged along its circumference. These curved grooves 51 serve as guide grooves in this invention. The curved grooves 51 penetrate the axial ends of the rotary adjustment component 5, i.e., between the upper and lower ends. The curved grooves 51 extend around the rotation axis of the rotary adjustment component 5 between the first position 511 and the second position 512, with the first position 511 being farther from the rotation axis than the second position 512. Preferably, the curved grooves 51 extend along an arc 519, from... Figure 9 From the top-down view shown, the arc 519 is concave inward along the direction away from the rotation axis of the adjustment component 5, meaning the center of the arc is located on the side where the rotation axis 22 is located. The curved groove 51 allows for smoother operation of the friction mechanism 4. Also, see... Figure 4 The second outer peripheral surface 509 of the rotary adjustment component 5 is provided with a fitting mounting hole 59, and the fitting mounting hole 59 is exposed when the operating component 6 is installed on the rotary adjustment component 5. In addition, the outer periphery of the operating component 6 is provided with an operating part, and the operating part has an operating recess 61.

[0050] Combination Figure 3 , Figure 4 , Figure 6 and Figure 10 After the friction mechanism 4 is installed into the sliding channel 31, the friction mechanism 4 can move within the sliding channel 31, and the extending direction of the slide rod segment 432 in the friction mechanism 4 is consistent with the extending direction of the sliding channel 31, both being radial to the rotating shaft 22. Figure 10 As shown, the cylinder 412 extends from the connecting hole 311 to the outside of the upper side 301 and is inserted into the curved groove 51. At this time, the cylinder 412 is located in the first position 511 of the curved groove 51. A part of the friction component 42, including the friction mating surface 429, extends from the outlet 310 to the outside of the first outer peripheral surface 309 and reaches the master material roll installation position 100.

[0051] After the rotary adjustment component 5 rotates, the cylinder 412 will move into the curved groove 51. Since the radial distance between each extension position of the curved groove 51 and the rotating shaft 22 is different, it will force the friction mechanism 4 to move radially along the rotating shaft 22. In addition, the offset of the extension direction of the curved groove 51 relative to the circumference of the rotating shaft 22 is small. Therefore, the curved groove 51 also serves as a self-locking structure to prevent backflow. After the rotary adjustment component 5 is rotated and the radial position of the friction mechanism 4 is adjusted, the radial movement of the friction mechanism 4 will not cause the rotary adjustment component 5 to rotate again. Furthermore, preferably, when the friction mechanism 4 moves radially to the first limit position closest to the rotating shaft 22, the friction component 42 is entirely located within the rotating body 3, and when the friction component 42 moves radially relative to the base component 41 to the second limit position closest to the base component 41, the friction component 42 is entirely located within the rotating body. When the reverse speed limiting device 1 is used to limit the speed of the master material roll, the disassembly and assembly of the master material roll also need to be considered. Of course, the friction mechanism 4 can be retracted by operating the rotary adjustment component 5 to release the abutment support of the master material roll. Furthermore, when considering the master material roll with the smallest inner diameter, the friction mechanism 4 retracted to the limit position is located entirely within the rotating body 3 to ensure the release of the abutment against the smallest master material roll. When the friction component 42 moves radially relative to the base component 41 to the second limit position closest to the base component 41, the friction component 42 is located entirely within the rotating body 3 to ensure effective and stable abutment with the smallest master material roll.

[0052] See Figure 1 , Figure 11 and Figure 12 The first master stock roll 91 is a master stock roll with a minimum inner diameter adapted to the reverse speed limiting device 1. The inner diameter of the first master stock roll 91 is close to the outer diameter of the rotating body 3. For easy installation, the rotating adjustment component 5 is first rotated by twisting the operating component 6 or manipulating the handle inserted into the accessory mounting hole 59, so that the cylinder 412 reaches the second position 512 of the curved groove 51. At the same time, the friction mechanism 4 moves radially to the first limit position closest to the rotating shaft 22. At this time, the friction component 42 is almost entirely located inside the rotating body 3 to avoid obstructing the first master stock roll 91. After the first master stock roll 91 is fitted onto the rotating body 3, the radial position of the friction mechanism 4 is adjusted by rotating the adjustment component 5 so that the friction mating surface 429 abuts against the first inner circumferential surface 911 of the first master stock roll 91. The tightness of the abutment between the two is then adjusted. Figure 1 As shown, after adjusting the rotation adjustment component 5, the cylinder 412 returns to the first position 511, at which point the friction component 42 is firmly abutting against the inner circumference of the first masterbatch roll 91.

[0053] When the drive roller group 8 starts and pulls the lead-out end 919 of the first master material roll 91, it forces the first master material roll 91 to rotate in the first rotation direction a. At the same time, the motor 21 of the reverse speed limiting device 1 starts and drives the reverse speed limiting device 1 to reverse in the second rotation direction b, which is opposite to the first rotation direction a. The friction mating surface of the friction component 42 and the inner circumferential surface of the master material roll can provide a reverse torque for the first master material roll 91 through frictional mating. Furthermore, a detection module for detecting the torque of the rotating shaft 22 is provided inside the motor 21 or between the motor 21 and the rotating shaft 22. The speed of the motor 21 can also be adjusted in real time according to the acquired detection data, thereby providing a more accurate reverse torque for the master material roll, thus ensuring that the master material roll is fed in a taut and stable state.

[0054] See also Figure 12 Compared to the first master stock 91, the second master stock 92 has a larger inner diameter. At this time, the cylinder 412 is in the first position 511, and the friction mechanism 4 is in the outer limit position. The pressure spring 44 is also in a compressed state. The friction mating surface 429 of the friction component 42 abuts against the second inner circumferential surface 921 of the second master stock 92, providing a reverse torque for the rotating second master stock 92. Furthermore, the tightness of the contact between the friction component 42 and the second master stock 92 can be adjusted by the torsion adjustment component 5 to meet different reverse torque requirements; additionally, combined with... Figure 3 Since the head 431 of the screw 43 is exposed at the inlet 420 of the friction mating surface 429, the screw 43 can be easily turned from the friction mating surface 429 to adjust the initial distance between the friction component 42 and the base component 41 and the initial compression degree of the pressure spring 44.

[0055] Therefore, the reverse speed limiting device 1 can be used with various masterbatch rolls of different sizes and meet various tightness requirements for various masterbatch rolls. Thus, it can provide more accurate reverse torque for masterbatch rolls of various sizes and has better applicability.

[0056] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reverse speed limiting device for a masterbatch roll, comprising a rotating shaft and a friction mechanism, wherein at least two of the friction mechanisms are disposed on the outer periphery of the rotating shaft; Its features are: The reverse speed limiting device also includes a rotating body and a motor. The motor is connected to the rotating shaft for transmission. The rotating body is fixed coaxially with the rotating shaft. The outer periphery of the rotating body forms a master material roll mounting position. The friction mechanism includes a base component, an elastic element, and a friction component. The base component, the elastic element, and the friction component abut against each other in sequence along the radial direction of the rotating shaft and in a direction away from the rotating shaft. The friction component can move relative to the base component along the radial direction. The friction mechanism is adjustablely disposed in the rotating body along the radial direction, and the friction mating surface of the friction component extends to the mounting position of the masterbatch, so that the reverse speed limiting device can adjust the radial position of the friction mechanism; When the reverse speed limiting device rotates in the opposite direction of the master material roll, the friction mating surface of the friction component can provide a reverse torque to the master material roll under the frictional mating with the inner circumferential surface of the master material roll; A detection module for detecting the torque of the shaft is provided between the motor or the motor and the shaft.

2. The reverse speed limiting device for masterbatch rolls according to claim 1, characterized in that: The reverse speed limiting device also includes a rotary adjustment component; The rotary adjustment component is concentrically arranged and rotatably connected to the rotary body; The rotary adjustment component is provided with a guide groove, which extends around the rotation axis of the rotary adjustment component between a first position and a second position, wherein the first position is farther away from the rotation axis than the second position. The base component is provided with a guide portion, which is located within the guide groove.

3. The reverse speed limiting device for masterbatch rolls according to claim 2, characterized in that: On the projection of the rotation axis along its axial direction, the guide groove extends along an arc, the center of which is located on the side of the rotation axis.

4. The reverse speed limiting device for masterbatch rolls according to claim 2, characterized in that: The reverse speed limiting device also includes an operating component, which is fixedly connected to the rotation adjustment component. The operating component has an operating part on its outer periphery, and the operating part has an operating recess. And / or, the outer periphery of the rotary adjustment component is provided with exposed fitting mounting holes.

5. The reverse speed limiting device for masterbatch rolls according to any one of claims 1 to 4, characterized in that: The friction mechanism also includes a sliding rod; The sliding rod is disposed between the base component and the friction component, the elastic element is fitted onto the sliding rod, one of the base component and the friction component is fixedly connected to the sliding rod, and the other of the base component and the friction component is slidably connected to the sliding rod along the radial direction.

6. The reverse speed limiting device for the masterbatch roll according to claim 5, characterized in that: The sliding rod is a screw rod, which includes a head, a sliding rod section, and a threaded section connected in sequence. The friction component is provided with a first hole segment and a second hole segment connected in sequence, wherein the inner diameter of the second hole segment is smaller than the inner diameter of the first hole segment; The base component is provided with screw holes; The screw passes through the friction component, the threaded section engages with the threaded hole, the second hole section engages with the sliding rod section, and the head is located within the first hole section; The first hole is exposed on the friction mating surface of the friction component.

7. The reverse speed limiting device for masterbatch rolls according to any one of claims 1 to 4, characterized in that: The rotating shaft is arranged vertically; The reverse speed limiting device for the master stock roll also includes a support plate, which is fixedly connected to the rotating shaft and is located below the rotating body and the mounting position of the master stock roll.

8. The reverse speed limiting device for masterbatch rolls according to claim 7, characterized in that: The rotating body has a radial sliding channel, and the friction mechanism is disposed in the sliding channel; The sliding channel opens onto the side facing the tray.

9. The reverse speed limiting device for masterbatch rolls according to any one of claims 1 to 4, characterized in that: The friction component and / or the base component are provided with a limiting hole, and the elastic element is located in the limiting hole.

10. Automated tape slitting and winding equipment, including drive roller assembly and reverse speed limiting device; The reverse speed limiting device is the reverse speed limiting device described in any one of claims 1 to 9; The drive roller assembly is used to draw material from the master roll at the master roll mounting position and force the master roll to rotate in the first rotation direction; The plurality of friction components are used to abut against the inner circumferential surface of the masterbatch, and the motor is used to drive the reverse speed limiting device to rotate in the opposite direction of the second rotation direction.

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