Control method for portable cable wrapping device

Abstract

The application provides a control method of a portable cable wrapping device, which comprises the following steps: obtaining the elongation rate delta corresponding to the tape of a current wrapping tape roll; establishing the rotating speed relationship between the revolution motor and the rotation motor according to the elongation rate delta; setting the rotating speed omega 1 of the revolution motor; obtaining the radius of the wrapping tape roll and the radius of the cable in real time, and adjusting the rotating speed omega 2 of the rotation motor in real time according to the radius of the wrapping tape roll, the radius of the cable, the rotating speed omega 1 of the revolution motor and the rotating speed relationship. The application establishes the rotating speed relationship between the rotation motor and the motor through the elongation rate corresponding to the tape of the wrapping tape roll, and adjusts the rotating speed of the rotation motor in real time by monitoring the change of the radius of the wrapping tape roll and the radius of the cable in the wrapping process, so that the constant tension wrapping of the cable is realized, and the uneven distribution of the insulating material caused by the uneven wrapping force of the manual winding is improved.

Description

Technical Field

[0001] This invention relates to the field of power operation technology, and more specifically to a control method for a portable cable wrapping device. Background Technology

[0002] A crucial step in the construction of wrapped cable joints is the wrapping process. The principle involves sequentially applying special electrical tape from the inside out—the conductor, inner semi-conductive layer, main insulation, outer semi-conductive layer, copper shielding layer, and outer sheath—to restore the cable's internal structure. The tape materials and process flow of wrapped cable joints give them excellent waterproof sealing, insulation, and construction flexibility. However, on-site wrapping is time-consuming, inefficient, and requires highly skilled personnel.

[0003] To ensure the wrapping tape is tightly and smoothly wrapped around the cable core, a certain tension must be applied to the tape. During the wrapping process, the stability of this tension directly affects the uniformity of the cable's outer diameter, which in turn leads to changes in other related cable properties. Therefore, controlling the cable wrapping tension is crucial to the cable's production quality. Manual wrapping, however, cannot effectively control the wrapping tension, angle, and speed, resulting in uneven distribution of the insulation material, which may affect the overall dimensions, insulation performance, and waterproofing performance. Summary of the Invention

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a control method for a portable cable wrapping device.

[0005] The technical solution adopted in this invention is as follows:

[0006] This invention provides a control method for a portable cable wrapping device. The device includes a housing, a C-gear, a revolving motor, a wrapping tape roll, and a rotating motor. One side of the C-gear is fixed to the housing via a first slide rail, and the other side is fixed to a fixing mechanism via a second slide rail. A cable passes through the C-gear. The revolving motor is fixed to the housing and drives the C-gear to rotate. The rotating motor and the wrapping tape roll are located on opposite sides of the C-gear, and the wrapping tape roll is coaxially connected to the rotating motor. The self-rotating motor is rigidly connected to the C-type gear, and the axis of the cable is parallel to the axis of the self-rotating motor. The self-rotating motor is used to drive the rotation of the wrapping tape roll. The control method includes the following steps: obtaining the elongation δ corresponding to the current wrapping tape roll; establishing the speed relationship between the orbital motor and the self-rotating motor based on the elongation δ; setting the speed ω1 of the orbital motor; obtaining the radius of the wrapping tape roll and the radius of the cable in real time, and adjusting the speed ω2 of the self-rotating motor in real time based on the radius of the wrapping tape roll, the radius of the cable, the speed ω1 of the orbital motor, and the speed relationship to achieve constant tension wrapping of the cable.

[0007] The control method of the portable cable wrapping device described above in this invention also has the following additional technical features:

[0008] According to one embodiment of the present invention, the output speed ω1 of the revolution motor is set according to the initial radius of the cable and the tape material wrapped in the tape roll.

[0009] According to one embodiment of the present invention, the speed relationship between the revolution motor and the rotation motor is established according to the following formula: Where ω1 is the rotational speed of the orbital motor, ω2 is the rotational speed of the self-rotating motor, δ is the elongation of the tape roll, R1 is the radius of the cable, and R2 is the radius of the tape roll.

[0010] According to one embodiment of the present invention, the self-rotating motor is selected as a DC servo motor, and the self-rotating motor is powered by a battery.

[0011] The beneficial effects of this invention are:

[0012] This invention uses a C-type gear, which can be used to wrap cables of different models as long as they can be put into the C-type gear. It is compatible with different cable heads and wrapping tapes. By controlling the speed of the revolution motor and the rotation motor, constant tension wrapping of the cable can be achieved, which improves the uneven distribution of insulation material caused by uneven wrapping force in manual wrapping. Moreover, the whole device has a simple structure, small size, light weight, and portability. It can be applied to complex and narrow construction occasions, and is easy to use and has a wide range of applications.

[0013] This invention establishes the relationship between the rotational speed of the self-rotating motor and the cable speed by measuring the elongation of the tape roll. It also adjusts the rotational speed of the self-rotating motor in real time by monitoring the changes in the radius of the tape roll and the radius of the cable during the wrapping process. This achieves constant tension wrapping of the cable and improves the uneven distribution of insulation material caused by uneven wrapping force during manual winding. Attached Figure Description

[0014] Figure 1 This is a front view of a portable cable wrapping device according to an embodiment of the present invention;

[0015] Figure 2 This is a side view of a portable cable wrapping device according to an embodiment of the present invention;

[0016] Figure 3 This is a perspective view of a portable cable wrapping device according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram showing the connection between the wrapping tape roll and the self-rotating motor of a portable cable wrapping device according to an embodiment of the present invention.

[0018] Figure 5 This is a flowchart of the control method for a portable cable wrapping device;

[0019] Figure 6 This is a schematic diagram illustrating the motion analysis of a portable cable wrapping device during the wrapping process according to an embodiment of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Figure 1 This is a front view of a portable cable wrapping device according to an embodiment of the present invention; Figure 2 This is a side view of a portable cable wrapping device according to an embodiment of the present invention; Figure 3 This is a perspective view of a portable cable wrapping device according to an embodiment of the present invention; Figure 4 This is a schematic diagram showing the connection between the wrapping tape roll and the self-rotating motor of a portable cable wrapping device according to an embodiment of the present invention.

[0022] like Figure 1-4As shown, the portable cable wrapping device includes: a device housing 1, a C-type gear 7, a first gear 2, a second gear 3, a fixing mechanism 5, a first slide rail 17, a second slide rail 18, a first synchronous gear 13, a second synchronous gear 14, a third synchronous wheel 12, a reducer 10, a revolution motor 11, a wrapping tape roll 16, a rotation motor 4, and a controller 20.

[0023] One side of the C-type gear 7 is fixed to the equipment housing 1 via the first slide rail 17, and the other side of the C-type gear 7 is fixed to the fixing mechanism 5 via the second slide rail 18. The cable 19 passes through the C-type gear 7. The first gear 2 and the second gear 3 are spaced a first preset distance apart and mesh with the C-type gear 7. The first synchronous gear 13 and the second synchronous gear 14 mesh coaxially with the first gear 2 and the second gear 3, respectively. The third synchronous pulley 12 is connected to the first synchronous gear 13 and the second synchronous gear 14 via a synchronous belt 15. The reducer 10 is fixed to the equipment housing 1. The revolution motor 11 is fixed to the equipment housing 1 and is connected to the reducer 10. Motor 11 drives the third synchronous pulley 12 to rotate, which in turn drives the first synchronous gear 13 and the second synchronous gear 14 to rotate via the synchronous belt 15, thereby driving the first gear 2 and the second gear 3 to rotate, and further driving the C-type gear 7 to rotate. The self-rotating motor 4 and the wrapping tape roll 16 are located on both sides of the C-type gear 7. The wrapping tape roll 16 is coaxially connected to the self-rotating motor 4, and the self-rotating motor 4 is rigidly connected to the C-type gear 7. The axis of the cable 19 is parallel to the axis of the self-rotating motor 4. The self-rotating motor 4 is used to drive the rotation of the wrapping tape roll 16. The controller 20 is connected to the revolution motor 11 and the self-rotating motor 4. The controller 20 controls the rotation speed of the revolution motor 11 and the self-rotating motor 4 to achieve constant tension wrapping of the cable.

[0024] In an embodiment of the present invention, the first preset distance is greater than the opening distance of the C-type gear 7. For example... Figure 1 As shown, the fixing mechanism 5 includes a left fixing mechanism and a right fixing mechanism. Figure 2 The fixing mechanism 5 in the text refers to the right fixing mechanism. The C-type gear 7 has grooves around its perimeter to be fixedly connected to the first slide rail 17 and the second slide rail 18 through the grooves.

[0025] Specifically, the distance between the first gear 2 and the second gear 3 that mesh with the C-type gear 7 is greater than the opening distance of the C-type gear 7, and any cable 19 with a diameter smaller than the opening distance of the C-type gear 7 can be placed therein for wrapping.

[0026] The self-rotating motor 4 is fixed to the C-gear 7 and can drive the coaxial wrapping tape roll 16 to rotate. The orbital motor 11 is connected to the reducer 10, and the orbital motor 11 and the reducer 10 are fixed to the equipment housing 1. The reducer 10 plays the role of matching the speed and transmitting torque between the orbital motor and the synchronous pulley. The purpose of the reducer 10 is to reduce the speed and increase the torque. The orbital motor 11 drives the third synchronous pulley 12 to rotate, which drives the first synchronous gear 13 and the second synchronous gear 14 to rotate through the synchronous belt 15, thereby driving the first gear 2 and the second gear 3 to rotate, and then driving the C-gear 7 that meshes with them to rotate. Thus, the controller controls the orbital motor 11 and the self-rotating motor 4 to wind the wrapping tape roll 16 onto the cable. The rotation speed of the orbital motor 11 according to the setting value of the controller 21 determines the wrapping speed of the wrapping tape roll 16. The lateral feed along the cable is determined by the speed of the personnel moving the equipment, or by setting guide wheels. When the cable 19 shaft does not coincide with the C-type gear shaft, or when the radius of the wrapping tape roll changes, causing inconsistent tension, the controller adjusts the rotation speed of the self-rotating motor 4 and the revolution motor 11 in real time to solve the problem. Adjusting the rotation speed of the self-rotating motor 4 can control the tape tension, and adjusting the rotation speed of the revolution motor 11 can control the wrapping speed. At the same time, the maintenance personnel hold the device and move it laterally along the cable to feed and complete the wrapping.

[0027] Therefore, by using a C-type gear, different types of cables can be wrapped as long as they can be inserted into the C-type gear. It is compatible with different cable heads and wrapping tapes. By controlling the speed of the revolution motor and the rotation motor, constant tension wrapping of the cable can be achieved, which improves the uneven distribution of insulation material caused by uneven wrapping force in manual winding. Moreover, the whole device has a simple structure, small size, light weight, and portability. It can be applied to complex and narrow construction occasions, is easy to use, and has a wide range of applications.

[0028] According to one embodiment of the present invention, such as Figure 1 As shown, the portable cable wrapping device described above may further include: a stop (not specifically shown in the figure) and a proximity switch 8. The stop is mounted on the left or right fixing mechanism; the proximity switch 8 is mounted on the C-gear 7 and is connected to the controller 20. The proximity switch 8 is used to detect the distance between itself and the stop and to determine whether the opening of the C-gear 7 has rotated to the opening position based on the distance between itself and the stop.

[0029] Specifically, the cable is threaded through the C-gear 7, which is equipped with a proximity switch 8. The proximity switch 8 rotates with the C-gear 7. When the proximity switch 8 rotates to the stop position, it will send a switch signal. After the wrapping is completed, the controller 20 can stop the C-gear 7 from rotating according to the switch signal, so that the C-gear 7 can rotate to the open position after the wrapping is completed, so that the cable can be easily taken out.

[0030] According to one embodiment of the present invention, the portable cable wrapping device described above may further include: a battery connected to a self-rotating motor, the battery being used to power the self-rotating motor. The self-rotating motor is powered by a DC servo motor.

[0031] Specifically, the self-rotating motor 4 is powered by a battery to improve portability and avoid the problem of cable tangling when wrapping the bag.

[0032] According to one embodiment of the present invention, a cable clamping and fixing mechanism is provided at the C-type gear 7 or the equipment housing 1 to improve the stability of the cable when it is inserted into the wrapping.

[0033] Since it is handheld, it is difficult to ensure that the center of the wrapping tape roll is coaxial with the cable axis. Therefore, it is necessary to control the output torque of the wrapping motor in a timely manner to maintain a constant tension in the wrapping tape. The following describes how to achieve constant tension wrapping of the cable with specific examples.

[0034] Figure 5 This is a flowchart of the control method for a portable cable wrapping device, such as... Figure 5 As shown, the method includes the following steps:

[0035] S1, obtain the elongation δ of the tape currently wrapped.

[0036] Specifically, the elongation δ corresponding to different tape materials of the wrapping tape roll can be obtained in advance through relevant experiments. For example, the elongation δ of #13 semiconductive tape is 100%, the elongation δ of #2220 stress control tape is 10%, and the elongation δ of #23 ethylene propylene rubber self-adhesive insulating tape is 25%.

[0037] S2, establish the speed relationship between the revolution motor and the rotation motor based on the elongation δ.

[0038] Furthermore, motion analysis of the portable cable wrapping device during wrapping is as follows: Figure 6 As shown, the elongation δ (%) of the dummy wrapped tape roll, the radius R1 (mm) of the cable, the radius R2 (mm) of the wrapped tape roll, the angular velocity ω1 (rad / s, also known as the revolution speed of the orbital motor), rotating clockwise, the angular velocity ω2 (rad / s, also known as the rotation speed of the self-rotating motor), rotating counterclockwise, the time required for the wrapped tape roll to move from position 1 to position 2 is t (s), O2 represents the center of the wrapped tape roll, A, B, A′, B′ and C are schematic diagrams of different positions in the wrapped tape roll, and F represents the force and direction of the wrapped tape roll.

[0039] The length of the cable already wrapped around the entry tape: AA'=ω1tR1;

[0040] The exit length of the wrapped tape roll: B'C=ω2tR2;

[0041] Because the wrapping tape roll stretches during wrapping, AA'=B'C(1+δ);

[0042] Combining the above formulas, we can obtain the speed relationship between the revolution motor and the rotation motor:

[0043] S3 sets the rotational speed ω1 of the orbital motor.

[0044] Furthermore, in one embodiment of the present invention, the output speed ω1 of the revolution motor is set according to the initial radius of the cable and the tape material wrapped in the tape roll.

[0045] Specifically, the output torque of the rotary motor is determined by factors such as the initial radius of the cable and different tape parameters. The rotational speed of the rotary motor determines the cable wrapping speed. The lateral feed along the cable is increased by the movement of the handheld device operator. To control damping and speed difference, the rotational speed and torque of the rotary motor are kept constant. The output speed ω1 of the rotary motor corresponding to different initial cable radii and wrapping tape rolls is obtained in advance through relevant experiments and pre-stored in the controller, and can be directly called upon during use.

[0046] S4: The radius of the wrapping tape roll and the radius of the cable are obtained in real time. Based on the radius R2 of the wrapping tape roll, the radius R1 of the cable, the speed ω1 of the revolution motor, and the speed relationship, the speed ω2 of the rotation motor is adjusted in real time to achieve constant tension wrapping of the cable.

[0047] Specifically, during the operation of the manual hand-held wrapping device, it is difficult to keep the distance between the center of the tape roll and the axis of the cable constant. When the distance changes, the tension on the tape will also change. In order to ensure that the tape maintains a constant amount of deformation during the wrapping process and to ensure the waterproof performance of the joint, this invention performs online monitoring and control of the tension during the wrapping process.

[0048] Specifically, the real-time radius R2 of the wrapped tape roll and the radius R1 of the cable can be obtained in real time through relevant distance sensors. Since the rotational speed ω1 and elongation δ of the revolving motor are fixed based on the initial radii of the wrapped tape roll and the cable, according to the formula... The rotational speed ω2 of the self-rotating motor can be calculated in real time. The instantaneous excitation voltage can be adjusted based on the calculated ω2 to regulate the motor's speed. This effectively solves the problem of varying wrapping tension caused by changes in cable radius, wrapping tape radius, and the distance between the wrapping tape's rotation center and the cable axis during the wrapping process. This ensures the cable joint has good insulation and waterproof performance, and the method exhibits low pulsation and high precision.

[0049] According to one embodiment of the present invention, the aforementioned self-rotating motor is a DC servo motor, and the self-rotating motor is battery powered. This avoids the problem of cable tangling with the motor wire during the wrapping process.

[0050] In summary, the control method of the portable cable wrapping device according to the embodiments of the present invention establishes the relationship between the rotational speed of the self-rotating motor and the cable speed by establishing the elongation of the wrapping tape roll, and adjusts the rotational speed of the self-rotating motor in real time by monitoring the changes in the radius of the wrapping tape roll and the radius of the cable during the wrapping process, so as to achieve constant tension wrapping of the cable and improve the situation of uneven distribution of insulation material caused by uneven wrapping force in manual winding.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for a portable cable wrapping device, characterized in that, The device includes: The equipment comprises a housing, a C-gear, a revolving motor, a roll of wrapped adhesive tape, and a rotating motor. One side of the C-gear is fixed to the housing via a first slide rail, and the other side is fixed to a fixing mechanism via a second slide rail. A cable passes through the C-gear. The revolving motor is fixed to the housing and drives the C-gear to rotate. The rotating motor and the roll of wrapped adhesive tape are located on opposite sides of the C-gear. The roll of wrapped adhesive tape is coaxially connected to the rotating motor, and the rotating motor is rigidly connected to the C-gear. The axis of the cable is parallel to the axis of the rotating motor, and the rotating motor drives the roll of wrapped adhesive tape to rotate. The control method includes the following steps: Obtain the elongation δ of the current wrapped tape roll; The rotational speed relationship between the revolution motor and the rotational motor is established based on the elongation δ. Set the speed of the orbital motor ω 1; The radius of the wrapping tape roll and the radius of the cable are obtained in real time, and the rotation speed of the orbiting motor is determined based on the radius of the wrapping tape roll, the radius of the cable, and the rotation speed of the orbiting motor. ω 1. The rotational speed of the self-rotating motor is adjusted in real time according to the aforementioned rotational speed relationship. ω 2. To achieve constant tension wrapping of the cable; The output speed of the revolution motor is set according to the initial radius of the cable and the material of the wrapping tape roll. ω 1. Establish the speed relationship between the revolution motor and the rotation motor according to the following formula: ； in, ω 1 represents the rotational speed of the revolving motor. ω 2. The rotational speed of the self-rotating motor and the corresponding elongation of the tape wound around the roll. δ , R 1 represents the radius of the cable. ，R 2 is the radius of the wrapping tape roll.

2. The control method for the portable cable wrapping device according to claim 1, characterized in that, The self-rotating motor is a DC servo motor, and the self-rotating motor is powered by a battery.

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