Tension self-adaptive control system of tape sealing machine

Abstract

This utility model discloses a tension adaptive control system for a tape sealing machine, including a base. A first bracket and a second bracket are respectively mounted on the top of the base. A first motor is located on the back of the first bracket, and a take-up wheel is fixedly connected to the output shaft of the first motor. The second bracket has a sliding groove and a pair of mounting holes, and a pair of magnetic powder brakes are mounted on the back of the second bracket. A guide wheel is fixedly connected to the output shaft of each magnetic powder brake. A pressure wheel is arranged between the two guide wheels, and a sliding rod is fixedly connected to the back of the pressure wheel. A slider is fixedly connected to the end of the sliding rod, and a transmission hole is provided on the slider. A second motor is mounted on the base, and a lead screw is fixedly connected to the top of the output shaft of the second motor. A tension controller is mounted on the back of the second bracket. This utility model can achieve adaptive control of tape tension to prevent excessive or insufficient tension. The detachable design facilitates individual repair in case of component failure.

Description

Technical Field

[0001] This utility model belongs to the field of tape sealing technology, and in particular relates to a tension adaptive control system for tape sealing machines. Background Technology

[0002] A tape sealing machine is an automated or semi-automated packaging device. Its main function is to seal the top and bottom seams of cartons using tape (usually BOPP pressure-sensitive tape), replacing traditional manual sealing operations. In tape sealing machines, tension refers to the axial tensile force experienced by the tape during the pulling, pasting, and cutting process. When the tension is insufficient or too low, the tape adhesion is often weak, easily loosening and wrinkling, resulting in poor sealing. Conversely, when the tension is too high, the tape is easily torn, causing production interruptions. For lightweight cartons, excessive tension may even lead to box deformation.

[0003] There are many types of tape sealing machines on the market. For example, a tape sealing machine with publication number CN203333659U is disclosed on the China Patent website. This tape sealing machine can be used for product packaging and sealing, but it has some defects and shortcomings that need to be improved: (1) Due to structural design reasons, most existing tape sealing machines rely on mechanical tension adjustment (such as springs or friction wheels), and it is difficult to dynamically sense the actual tension state of the tape. When the tape thickness, humidity changes or the carton surface is uneven, the system cannot respond in time, resulting in excessive tension fluctuations; (2) Although some existing tension control structures can be used in tape sealing machines, most of them are integrated designs, and related components are difficult to disassemble. When a fault occurs, it is not convenient to repair individual components. Therefore, in view of the above problems, the tension adaptive control system of the tape sealing machine provided by this utility model is of great significance. Utility Model Content

[0004] This utility model provides a tension adaptive control system for a tape sealing machine. The tension controller can detect the actual tension value of the tape in real time and control the torque of the magnetic powder brake based on the deviation between the actual tension value and the set value, thereby reducing or increasing the tape tension. Furthermore, the tension controller can also control the displacement of the pressure roller to achieve adaptive control of the tape tension, thus preventing the tape from being subjected to excessive or insufficient tension. Through a detachable design, relevant components can be disassembled as needed to facilitate repair of individual components in case of malfunction. In summary, this invention solves the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] The present invention discloses a tension adaptive control system for a tape sealing machine, comprising a base with several mounting holes, and a first bracket and a second bracket mounted on the top of the base. A first motor is mounted on the back of the first bracket, and the output shaft of the first motor passes through the front end of the first bracket and is fixedly connected to a winding wheel. The second bracket has a sliding groove and a pair of mounting openings, and a pair of magnetic powder brakes are mounted on the back of the second bracket. A guide wheel is fixedly connected to the output shaft of each magnetic powder brake, and a pressure wheel is positioned between the two guide wheels. A sliding rod is fixedly connected to the back of the pressure wheel, and the end of the sliding rod passes through the sliding groove and is fixedly connected to a slider. A transmission hole is provided on the slider. A second motor is mounted on the base, and a lead screw is fixedly connected to the top of the output shaft of the second motor via a coupling. A tension controller is mounted on the back of the second bracket.

[0007] Furthermore, the slide groove is rectangular, and its width is equal to the diameter of the slide rod. The slider is attached to the back of the second bracket, and its width is greater than the width of the slide groove. The diameter of the transmission hole is equal to the diameter of the lead screw, and its hole wall is provided with an internal thread that mates with the lead screw. The lead screw passes through the transmission hole.

[0008] Furthermore, a fixed base is fixedly connected to both sides of the slider, and a guide hole is provided on the fixed base. A pair of guide rods are fixedly connected to the top of the base. The diameter of the guide rods is equal to the diameter of the guide hole, and each guide rod passes through the corresponding guide hole.

[0009] Furthermore, the side of the first bracket is L-shaped, with an angle of 90° between its front and bottom surfaces. The bottom of the first bracket has several first positioning holes, and the top of the base is fixedly connected with several first studs. The number of first studs is the same as the number of first positioning holes, and their diameters correspond to the diameters of the first positioning holes. The center of each first stud corresponds one-to-one with the center of each first positioning hole, and each first stud is threaded with a first nut that mates with it.

[0010] Furthermore, the second bracket is rectangular, with a pair of reinforcing blocks fixedly connected to both its front and back sides. The reinforcing blocks are triangular and symmetrically distributed, and the bottom of each reinforcing block is fixedly connected to the base.

[0011] Furthermore, the mounting opening is circular, with a diameter larger than that of the guide wheel, and the mounting openings are symmetrically distributed on the left and right sides of the slide groove. Several positioning seats are fixedly connected to the side wall of the magnetic powder brake, and each positioning seat has a second positioning hole. Several second studs are fixedly connected to the back of the second bracket. The number of second studs is the same as that of the second positioning holes, and their diameters correspond to the diameters of the second positioning holes. The center of each second stud corresponds one-to-one with the center of each second positioning hole. A second nut that mates with each second stud is threaded onto it.

[0012] Furthermore, the edges of the winding wheel, guide wheel, and clamping wheel are all provided with slots of equal width, and the centers of the slots on the winding wheel, guide wheel, and clamping wheel are located on the same straight line.

[0013] The present invention has the following advantages over the prior art:

[0014] (1) When the tension adaptive control system of the tape sealing machine in this utility model is in use, the actual tension value of the tape can be detected in real time by the tension controller, and the torque of the magnetic powder brake can be controlled according to the deviation between the actual tension value and the set value, so as to reduce or increase the tension of the tape. In addition, the displacement of the pressure wheel can also be controlled by the tension controller to achieve adaptive control of the tape tension, thereby preventing the tension on the tape from being too large or too small.

[0015] (2) The tension adaptive control system of the tape sealing machine in this utility model is designed to be detachable, and the relevant components can be disassembled as needed so that individual components can be repaired in case of failure.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front structural schematic diagram of the tension adaptive control system of the tape sealing machine of this utility model;

[0019] Figure 2 This is a schematic diagram of the back structure of the tension adaptive control system of the tape sealing machine of this utility model;

[0020] Figure 3This is a schematic diagram of the base structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the back structure of the first bracket and the second bracket in this utility model;

[0022] Figure 5 This is a schematic diagram of the guide wheel in this utility model;

[0023] Figure 6 This is a schematic diagram of the pressure wheel in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Base; 2. Mounting hole; 3. First bracket; 4. Second bracket; 5. First motor; 6. Rewinding wheel; 7. Slide groove; 8. Mounting port; 9. Magnetic powder brake; 10. Guide wheel; 11. Pressure wheel; 12. Slide rod; 13. Slider; 14. Transmission hole; 15. Second motor; 16. Lead screw; 17. Tension controller; 18. Fixed seat; 19. Guide hole; 20. Guide rod; 21. First positioning hole; 22. First stud; 23. First nut; 24. Reinforcing block; 25. Positioning seat; 26. Second positioning hole; 27. Second stud; 28. Second nut; 29. ​​Slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Please see Figure 1-6As shown, the tension adaptive control system of the tape sealing machine of this utility model includes a base 1 with several mounting holes 2. Bolts and other fasteners can be inserted into the mounting holes 2 to fix the control system in a suitable position on the tape sealing machine. A first bracket 3 and a second bracket 4 are respectively mounted on the top of the base 1. A first motor 5 is located on the back of the first bracket 3. The output shaft of the first motor 5 passes through the front end of the first bracket 3 and is fixedly connected to a take-up wheel 6. Tape for packaging and sealing is wound on the take-up wheel 6. Driving the first motor 5 can drive the take-up wheel 6 to rotate, thus stretching the tape for subsequent application by the tape sealing machine. On the seam of the product packaging box, the second bracket 4 is provided with a sliding groove 7 and a pair of mounting holes 8. A pair of magnetic powder brakes 9 are mounted on the back of the second bracket 4. A guide wheel 10 is fixedly connected to the output shaft of each magnetic powder brake 9. The magnetic powder brake 9 can be any commercially available product (such as the BLS model). The magnetic powder brake 9 acts as an actuator, and its output torque can be changed by adjusting its excitation current, thereby controlling the tension of the guide wheel 10. A pressure wheel 11 is provided between the two guide wheels 10. A sliding rod 12 is fixedly connected to the back of the pressure wheel 11. The end of the sliding rod 12 passes through the sliding groove 7 and is fixedly connected to a slider 13. A transmission hole 14 is provided on the slider 13. The base 1... A second motor 15 is mounted on the top of the second bracket 4. A lead screw 16 is fixedly connected to the top of the output shaft of the second motor 15 via a coupling. A tension controller 17 is mounted on the back of the second bracket 4. The tension controller 17 can be a commercially available product (such as model KTC828A). The tension controller 17 is electrically connected to the magnetic powder brake 9 and the second motor 15 via control lines. The tension controller 17 can detect the actual tension value of the tape in real time and convert it into a standard electrical signal (such as 0-10V or 4-20mA) and transmit it to the controller. The controller's microprocessor compares the received actual tension signal with the preset target tension value and calculates the deviation. The controller then calculates the deviation based on the calculated deviation. The controller calculates the magnitude and direction using a built-in PID control algorithm (proportional-integral-derivative). The PID algorithm comprehensively considers the current value (P), historical accumulation (I), and future trend (D) of the deviation to calculate the optimal control output. The controller sends the calculated control signal (usually 0-24V voltage or 0-2A / 4A current) to the magnetic powder brake 9 and the second motor 15. If the actual tension is greater than the set value, the controller will reduce the output current, thereby reducing the torque of the magnetic powder brake 9 and thus reducing the belt tension. If the actual tension is less than the set value, the controller will increase the output current, thereby increasing the torque of the magnetic powder brake 9 and thus increasing the belt tension.

[0029] The slide groove 7 is rectangular, and its width is equal to the diameter of the slide rod 12. The slider 13 is attached to the back of the second bracket 4, and its width is greater than the width of the slide groove 7. The diameter of the transmission hole 14 is equal to the diameter of the lead screw 16, and its hole wall is provided with an internal thread that mates with the lead screw 16. The lead screw 16 passes through the transmission hole 14, and can be driven to rotate by the second motor 15. When the lead screw 16 rotates, it can drive the slider 13, along with the slide rod 12 and the pressure wheel 11, to move up and down along the slide groove 7 through the threaded engagement with the transmission hole 14. When the pressure wheel 11 moves up and down, the tape wrapped around the outside of the pressure wheel 11 can be tensioned. In this process, the displacement of the pressure wheel 11 can also be controlled by the tension controller 17, thereby realizing adaptive control of the tape tension to prevent the tape from being too tensile or too light.

[0030] The slider 13 is fixedly connected to two sides of a fixed base 18. The fixed base 18 has a guide hole 19. A pair of guide rods 20 are fixedly connected to the top of the base 1. The diameter of the guide rods 20 is equal to the diameter of the guide hole 19. Each guide rod 20 passes through the corresponding guide hole 19. When the slider 13 moves up and down, the guide rods 20 and the guide holes 19 cooperate to guide and limit the movement, so as to ensure that the slider 13 always moves up and down in the vertical direction, thereby preventing the position of the pressure roller 11 from shifting or tilting.

[0031] The first bracket 3 has an L-shaped side, with a 90° angle between its front and bottom surfaces. Several first positioning holes 21 are provided at the bottom of the first bracket 3. Several first studs 22 are fixedly connected to the top of the base 1. The number of first studs 22 is the same as the number of first positioning holes 21, and their diameters correspond to the diameters of the first positioning holes 21. The center of each first stud 22 corresponds one-to-one with the center of each first positioning hole 21. Each first stud 22 is threaded with a corresponding first nut 23. When the bottom of the first bracket 3 is attached to the base 1, each first stud 22 can be aligned and pass through the corresponding first positioning hole 21. At this time, the first nut 23 is threaded onto each first stud 22 and tightened. The first bracket 3 is fixed through the mutual cooperation between the first studs 22, the first positioning holes 21, and the first nut 23. When the first motor 5 malfunctions, the first bracket 3 can be removed from the base 1 by unscrewing the first nut 23 for separate repair of the first motor 5.

[0032] The second support 4 is rectangular, and a pair of reinforcing blocks 24 are fixedly connected to its front and back. The reinforcing blocks 24 are triangular and symmetrically distributed. The bottom of the reinforcing blocks 24 is fixedly connected to the base 1. The second support 4 can be reinforced by the reinforcing blocks 24 to ensure that it remains perpendicular to the base 1, thereby preventing the second support 4 from bending and deforming after being subjected to force for a long time.

[0033] The mounting opening 8 is circular, with a diameter larger than that of the guide wheel 10. The mounting openings 8 are symmetrically distributed on the left and right sides of the slide groove 7. Several positioning seats 25 are fixedly connected to the side wall of the magnetic powder brake 9. Each positioning seat 25 has a second positioning hole 26. Several second studs 27 are fixedly connected to the back of the second bracket 4. The number of second studs 27 is the same as the number of second positioning holes 26, and their diameters correspond to the diameters of the second positioning holes 26. The center of each second stud 27 corresponds one-to-one with the center of each second positioning hole 26. Each second stud 27 has... The magnetic powder brake 9 is connected to a threaded second nut 28. When the magnetic powder brake 9 is attached to the back of the second bracket 4, each second stud 27 can be aligned and pass through the corresponding second positioning hole 26. At this time, the second nut 28 is threaded onto each second stud 27 and tightened. The magnetic powder brake 9 can be fixed by the mutual cooperation between the second stud 27, the second positioning hole 26, and the second nut 28. When the magnetic powder brake 9 malfunctions, the magnetic powder brake 9 can be removed from the second bracket 4 by unscrewing the second nut 28 so that the magnetic powder brake 9 can be repaired separately.

[0034] The take-up roller 6, guide roller 10, and pressure roller 11 are all provided with slots 29 of equal width at their edges. The centers of the slots 29 on the take-up roller 6, guide roller 10, and pressure roller 11 are located on the same straight line. When the tape is wound around the take-up roller 6, the tape can pass through the top of the two guide rollers 10 and the bottom of the pressure roller 11 respectively, and fit into the slots 29 on the take-up roller 6, guide roller 10, and pressure roller 11 respectively. At this time, the tape can be positioned and corrected through the slots 29 to prevent the tape from shifting during packaging and sealing.

[0035] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0036] The working principle of this utility model is as follows:

[0037] In use, this utility model allows the control system to be fixedly installed at a suitable position on the tape sealing machine using fasteners on the base 1. The tape required for packaging and sealing is then wound onto the take-up roller 6. During winding, the tape passes through the tops of the two guide rollers 10 and the bottom of the pressure roller 11, respectively, and fits into the slots 29 on the take-up roller 6, guide rollers 10, and pressure roller 11. When packaging and sealing the product is required, the first motor 5 is driven to rotate the take-up roller 6. The rotation of the take-up roller 6 stretches the tape, allowing it to be subsequently pasted onto the seams of the product packaging box by the tape sealing machine, thus completing the packaging and sealing process. During this process, the tension controller 17 can detect the actual tension value of the tape in real time and convert it into a standard electrical signal (such as 0-10V or 4-20mA) transmitted to the controller. The controller's microprocessor compares the received actual tension signal with the preset target tension value and calculates the deviation. Based on the magnitude and direction of the deviation, the controller uses a built-in PID control algorithm (proportional-integral-derivative) for high-speed calculation. The D algorithm comprehensively considers the current value (P), historical accumulation (I), and future trend (D) of the deviation to calculate the optimal control output. The controller sends the calculated control signal (usually 0-24V voltage or 0-2A / 4A current) to the magnetic powder brake 9 and the second motor 15. If the actual tension is greater than the set value, the controller will reduce the output current, thereby reducing the torque of the magnetic powder brake 9 and thus reducing the belt tension; if the actual tension is less than the set value, the controller will increase the output current, thereby increasing the torque of the magnetic powder brake 9. This increases the tension of the tape. By driving the second motor 15, the lead screw 16 can be rotated. When the lead screw 16 rotates, it can drive the slider 13, together with the slide rod 12 and the pressure wheel 11, to move up and down along the slide groove 7 through the threaded engagement with the transmission hole 14. When the pressure wheel 11 moves up and down, the tape wrapped around the outside of the pressure wheel 11 can be tensioned. In this process, the displacement of the pressure wheel 11 can also be controlled by the tension controller 17, thereby achieving adaptive control of the tape tension to prevent the tension on the tape from being too large or too small.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tension adaptive control system for a tape sealing machine, characterized in that, The device includes a base with several mounting holes. A first bracket and a second bracket are mounted on the top of the base. A first motor is located on the back of the first bracket, and the output shaft of the first motor passes through the front end of the first bracket and is fixedly connected to a winding wheel. The second bracket has a sliding groove and a pair of mounting holes. A pair of magnetic powder brakes are mounted on the back of the second bracket. A guide wheel is fixedly connected to the output shaft of each magnetic powder brake. A pressure wheel is provided between the two guide wheels. A sliding rod is fixedly connected to the back of the pressure wheel. The end of the sliding rod passes through the sliding groove and is fixedly connected to a slider. A transmission hole is provided on the slider. A second motor is mounted on the base. A lead screw is fixedly connected to the top of the output shaft of the second motor through a coupling. A tension controller is mounted on the back of the second bracket.

2. The tension self-adaptive control system of the tape sealing machine according to claim 1, wherein, The slide groove is rectangular, and its width is equal to the diameter of the slide rod. The slider is attached to the back of the second bracket, and its width is greater than the width of the slide groove. The diameter of the transmission hole is equal to the diameter of the lead screw, and its hole wall is provided with an internal thread that mates with the lead screw. The lead screw passes through the transmission hole.

3. The tension self-adaptive control system of the tape sealing machine according to claim 1, wherein, Both sides of the slider are fixedly connected to a fixed base, and the fixed base has a guide hole. A pair of guide rods are fixedly connected to the top of the base. The diameter of the guide rods is equal to the diameter of the guide hole, and each guide rod passes through the corresponding guide hole.

4. The tension self-adaptive control system of the tape sealing machine according to claim 1, wherein, The side of the first bracket is L-shaped, with a 90° angle between its front and bottom surfaces. The bottom of the first bracket has several first positioning holes. The top of the base is fixedly connected with several first studs. The number of first studs is the same as the number of first positioning holes, and their diameters correspond to the diameters of the first positioning holes. The center of each first stud corresponds one-to-one with the center of each first positioning hole. Each first stud is threaded with a first nut that mates with it.

5. The tension self-adaptive control system of the tape sealing machine according to claim 1, wherein, The second bracket is rectangular, with a pair of reinforcing blocks fixedly connected to its front and back sides. The reinforcing blocks are triangular and symmetrically distributed, and the bottom of the reinforcing blocks is fixedly connected to the base.

6. The tension self-adaptive control system of the tape sealing machine according to claim 1, wherein, The mounting opening is circular, with a diameter larger than that of the guide wheel, and the mounting openings are symmetrically distributed on the left and right sides of the slide groove. Several positioning seats are fixedly connected to the side wall of the magnetic powder brake. Each positioning seat has a second positioning hole. Several second studs are fixedly connected to the back of the second bracket. The number of second studs is the same as that of the second positioning holes, and their diameters correspond to the diameters of the second positioning holes. The center of each second stud corresponds one-to-one with the center of each second positioning hole. A second nut that mates with each second stud is threaded onto it.

7. The tension self-adaptive control system of the tape sealing machine according to claim 1, wherein, The edges of the take-up roller, guide roller, and pressure roller are all provided with slots of equal width, and the centers of the slots on the take-up roller, guide roller, and pressure roller are located on the same straight line.

Images