Dynamic measuring device for winding tension of junction box

Abstract

The invention relates to the technical field of mechanical quantity measurement, in particular to a junction box winding tension dynamic measuring device which comprises binding posts and a winding post which are arranged in a shell, a winding wire transmitted from the two binding posts to the winding post, an expansion mechanism, a swing arm, an adjusting mechanism and a sensor. The swing arm is installed between the binding post and the winding post, the adjusting mechanism is installed between the swing arm and the expansion mechanism, the sensor is installed at the swing arm, short-distance tension is transmitted to long-distance thrust through the principle of physical and sensor dual induction and force arm transmission, and therefore small tension changes are transmitted to the winding position. Therefore, the reading of tension detection is accurate and stable, and meanwhile, the specific numerical value of tension is fed back through the deflection angle of the force arm.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical quantity measurement, in particular to a device for dynamically measuring the winding tension of a junction box. Background Art

[0002] In the field of mechanical quantity measurement technology, the dynamic measurement device for the winding tension of the junction box is a key equipment for real-time monitoring of the mechanical force applied during the wire processing process.

[0003] Among existing winding tension measurement technologies, static force detection methods dominate, such as using mechanical dynamometers or fixed strain gauges for discrete offline spot checks. However, these methods cannot meet the real-time monitoring requirements of dynamic tension during high-speed winding, making it difficult to accurately capture winding tension fluctuations and leading to significant underdetection of tension fluctuation characteristic signals. This in turn leads to defects such as loose winding arrangement and stress concentration, directly affecting the electrical performance and mechanical reliability of the junction box. In order to solve the above problems, the existing technology generally uses a variety of solutions, including measuring the static tension of a single point in the winding path through a fixed sensor, thereby detecting the tension during the winding process. However, when the expansion and contraction scales of the winding are relatively small, the winding is completed when the static tension is sensed. At this time, the static tension detection during winding will be interfered with by many factors, such as dynamic response hysteresis, poor anti-interference performance and calibration system mismatch defects. Therefore, when responding to the demand for dynamic monitoring of winding tension, static tension detection cannot detect the numerical changes in the winding path in real time, thereby affecting the accuracy of winding tension detection.

[0004] Based on this, in order to solve the problem that in the process of short-line winding, the tension detected at the fixed point is inaccurate due to the fast winding speed, thereby affecting the accuracy of winding tension detection, the present invention designs a dynamic measurement device for the winding tension of the junction box. Summary of the Invention

[0005] The present invention provides a dynamic measurement device for the winding tension of a junction box, which solves the problem that in the process of winding short wires, the tension detected at a fixed point is inaccurate due to the fast winding speed, thereby affecting the accuracy of the winding tension detection. The device adopts dual sensing of physics and sensors. On the one hand, the principle of force arm transmission is used to transmit the short-distance tension to the long-distance thrust, thereby transmitting small tension changes to the winding point, thereby tightening the winding wire, so that the tension detection reading is accurate and stable, and the specific value of the tension is fed back through the deflection angle of the force arm; on the other hand, the tension in the opposite direction is directly measured by the sensor, thereby realizing the dynamic measurement of tension relaxation and tension during the winding and winding process.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: The present invention provides a dynamic measurement device for the winding tension of a junction box, comprising a terminal and a winding post arranged in a shell, a winding wire transmitted from the two terminal posts to the winding post, an expansion mechanism, a swing arm, an adjustment mechanism and a sensor, wherein the expansion mechanism is located below the center position of the winding post, the swing arm is installed between the terminal and the winding post, the adjustment mechanism is installed between the swing arm and the expansion mechanism, and the sensor is installed at the swing arm. The swing arm straightens the winding wire through the adjustment mechanism. When the winding wire at the terminal is loosened, the swing arm moves toward the center of the winding post through the adjustment mechanism, and the adjustment mechanism drives the expansion mechanism to push the top of the winding post outward.

[0007] The expansion mechanism and the adjustment mechanism are the core driving parts used in this application to convert tension. They mainly amplify the change in tension by feeding back the change through a force balancing lever, and then read out the various readings through an angle meter and a force sensor, thereby realizing dynamic measurement of tension during the winding process; the sensor is mainly used here to detect the limit threshold of tension, so that the winding column can be released through the expansion mechanism before reaching the limit threshold, avoiding problems such as wire breakage caused by excessive tension.

[0008] Preferably, the winding poles are distributed in a ring array, and the top ends of the winding poles are in contact with each other in pairs at the initial position.

[0009] The winding column is controlled by the hydraulic drive below, which is similar to a three-jaw chuck structure. By driving the hydraulic mechanism, the winding column is expanded outward to the specified position, and then the winding process can be realized by rotating the winding column.

[0010] Preferably, the expansion mechanism includes a slide groove, a slider, a support plate and a drive block. The slide groove is opened on the winding column, the slider slides in the slide groove, the support plate is connected to the slider, the bottom of the support plate is rotatably connected to the bottom of the winding column, and the drive block is installed at the lower edge of the support plate and is located at the outer ring position of the winding column.

[0011] When the tension is small, the specific value of the tension is obtained through the sensor at the swing arm, and the range of tension change after the winding is tightened is obtained through force balance feedback. Therefore, the dynamic detection of tension can be obtained through angle detection and two readings of the sensor, thereby improving the stability of dynamic tension detection.

[0012] Preferably, the adjustment mechanism includes a reset spring, a fixed shaft, a transmission rod, a connecting rod, an adjustment rod and a drive ring, the reset spring is installed between the swing arm and the terminal post, the fixed shaft is installed on the terminal post, the transmission rod is installed on the fixed shaft and is rotatably connected to the swing arm, the connecting rod is installed at the end of the transmission rod, the adjustment rod is installed at the bottom end of the connecting rod, the drive ring is installed at the bottom of the winding post, and the drive ring cooperates with the drive block.

[0013] On the one hand, the rotation angle of the transmission rod can be used to determine the range of tension variation at that location, as well as the magnitude of the tension when the wire is taut. On the other hand, by comparing the readings before and after the sensor, the range of tension variation can be determined, which can then be compared with the tension variation range obtained by the angle detector. This improves the accuracy of dynamic tension detection, and automatically adjusts the winding tension during the winding process, ensuring that the winding maintains a constant tension, thereby ensuring that the windings are neatly arranged, reducing stress concentration, and improving the overall performance of the junction box.

[0014] Preferably, the swing arm is provided with a receiving slot, within which a compression spring is mounted, with a clamping plate mounted at one end. This allows the swing arm to adapt to the needs of winding wires of different diameters and achieve compression. Furthermore, when the wire is under tension, the swing arm can adjust the tension range of winding wires of different diameters, thereby preventing errors caused by changes in the swing arm's tension on the winding wire due to changes in winding wire diameter, which could affect the accuracy of the sensor's detection readings.

[0015] Preferably, the chute is arc-shaped, and the center of the arc of the chute is the hinge point between the support plate and the winding post. By setting the arc, the slider can rotate around the winding post, so that when the support plate rotates, the top winding position will not deviate significantly, thereby stabilizing the winding process.

[0016] Preferably, the support plate is arranged in a circular array, and a concave surface is opened on the support plate, which can realize the layered bundling of the winding wire, thereby realizing the dynamic tension adjustment of the winding wire, and also changing the spiral position of the winding wire, thereby avoiding the winding wire from forming an irregular disk shape, and forming a spiral shape that gradually spirals upward, thereby improving the neatness of the winding; at the same time, there will be no problem of increased tension due to the interweaving of the winding wires, thereby improving the accuracy of tension detection during the winding process.

[0017] Preferably, an electric push rod is provided near the inner side of the swing arm, and the sensor is connected to the electric push rod. When the tension increases, the sensor reaches a limit threshold. When the threshold is greater than a set value, the electric push rod is activated, and the electric push rod pushes the transmission rod, that is, reacts on the force arm, thereby causing the transmission rod to rotate about the fixed axis, and the transmission rod will drive the force arm to expand outward.

[0018] Preferably, the winding post is provided with stoppers on the upper and lower surfaces, and the opposite surfaces of the stoppers are provided with arcuate surfaces. This prevents the winding wire from sliding downward due to gravity, and also allows the upper winding wire to be arranged along a track by the arcuate surfaces, thereby cooperating with the concave surfaces to achieve the arrangement of the winding positions and improve the neatness of the winding process.

[0019] Preferably, the binding post is aligned with the bottom end of the winding post, and a driving mechanism is provided at the bottom end of the winding post. The binding post is aligned with the bottom end of the winding post, so that when the support plate is not flipped, a coiled wire is formed along a normal position. When the tension decreases, a coiled wire bundle spirals upward, with its opening facing upward, so that when the winding post is closed, it is easy to remove, thereby improving the convenience of winding and rewinding the wire.

[0020] The beneficial effects of the present invention are as follows: 1. The present invention proposes a device for dynamically measuring the winding tension of a junction box. The expansion mechanism and the adjustment mechanism amplify the change in tension by feeding it back through a force-balancing lever. The angle meter and the force sensor then read the various readings, thereby achieving dynamic measurement of the tension during the winding process. Simultaneously, the tension at the winding post is changed, allowing for spontaneous dynamic adjustment after dynamic measurement, thereby improving stability during the winding process.

[0021] 2. The present invention proposes a dynamic measurement device for the winding tension of a junction box, in which a slider slides in a slide groove, so that the support plate can slide along a fixed track at the winding column, so that the top of the support plate can protrude outward, thereby forming a large winding diameter, thereby forming expansion. When the tension is small, the specific value of the tension is obtained through the sensor at the swing arm, and the range of tension change after the winding is tightened is obtained through force balance feedback. Therefore, the dynamic detection of tension can be obtained through angle detection and two readings of the sensor, thereby improving the stability of the dynamic detection of tension.

[0022] 3. The present invention proposes a dynamic measurement device for the winding tension of a junction box. When the tension is small, the reset spring will gradually reset, thereby reducing the tension detection reading of the sensor. During the resetting process of the reset spring, the transmission rod on the fixed shaft will be rotated, and the principle of the product of force and lever arm will be used to convert the tiny tension change into a large change at the connecting rod and the adjusting rod. Then, the adjusting rod can drive the drive ring to squeeze the drive block when the winding column rotates. On the one hand, the range of tension change at this location and the magnitude of the tension when the wire is tightened can be known through the rotation angle of the transmission rod. On the other hand, the range of tension change can be known by comparing the reading changes before and after the sensor, and then it can be compared with the tension change range obtained by the angle detector, thereby improving the accuracy of the dynamic tension detection on the one hand; on the other hand, the winding tension can be automatically adjusted during the winding process, ensuring that the winding maintains a constant tension during the winding process, thereby ensuring that the windings are arranged neatly, reducing stress concentration, and improving the overall performance of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation or the description of the prior art. Obviously, the drawings described below are an implementation of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the working area of ​​the present invention; Figure 3 It is a schematic diagram of the winding column of the present invention; Figure 4 It is a schematic diagram of the adjustment mechanism of the present invention; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the swing arm of the present invention; Figure 7 It is a schematic diagram of the expansion mechanism of the present invention; Figure 8 yes Figure 7 Enlarged view of point B in the middle; Figure 9 yes Figure 7 Enlarged view of point C in the middle; Figure 10 This is a schematic diagram of the electric push rod.

[0025] In the figure: 1. Shell; 2. Terminal; 3. Winding post; 31. Limit block; 311. Arc surface; 4. Winding; 5. Expansion mechanism; 51. Slide groove; 52. Slider; 53. Support plate; 531. Concave surface; 54. Drive block; 6. Swing arm; 61. Placement groove; 62. Compression spring; 63. Clamp; 7. Adjustment mechanism; 71. Return spring; 72. Fixed shaft; 73. Transmission rod; 74. Connecting rod; 75. Adjustment rod; 76. Drive ring; 8. Sensor; 9. Electric push rod. DETAILED DESCRIPTION

[0026] In order to better understand the above solution, the above technical solution is described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] like Figure 1-3As shown, the present invention provides a dynamic measurement device for the winding tension of a junction box, comprising a terminal 2 and a winding post 3 arranged in a shell 1, a winding wire 4 transmitted from the two terminal posts 2 to the winding post 3, an expansion mechanism 5, a swing arm 6, an adjustment mechanism 7 and a sensor 8, wherein the expansion mechanism 5 is located below the center of the winding post 3, the swing arm 6 is installed between the terminal post 2 and the winding post 3, the adjustment mechanism 7 is installed between the swing arm 6 and the expansion mechanism 5, and the sensor 8 is installed at the swing arm 6. The swing arm 6 straightens the winding wire 4 through the adjustment mechanism 7. When the winding wire 4 at the terminal 2 is relaxed, the swing arm 6 moves toward the center of the winding post 3 through the adjustment mechanism 7, and the adjustment mechanism 7 drives the expansion mechanism 5 to push the top of the winding post 3 outward.

[0028] This device is placed in an automated production line, where the housing 1 can be considered as the inside of the machine. The terminal 2 there is different and can be divided into a fixed part and a wire-releasing part. The fixed part is mainly used to fix one end of the wire, so that one end of the wire can be bound when the wire is wound. The middle winding post 3 winds and stores the wire. At this time, the tension of the winding wire 4 during the winding process can be known by detecting the tension at the winding post 3. The other end of the terminal 2 adopts a pulley transmission type. Through the double pulley method, the fixed part of the terminal 2 is used to fix the wire, and the wire-releasing part of the terminal 2 is used to clamp the wire, that is, Before the winding post 3 rotates, the two different terminals 2 can tighten the wire 4. When the wire 4 is installed on the swing arm 6, the position of the swing arm 6 should be at the position where the wire 4 is stretched straight, that is, the straight line where the two terminals 2 are located. At this time, the reset spring 71 is in a stretched state. As the winding post 3 gathers the wire 4, if the wire 4 relaxes, the wire 4 between the winding post 3 and the wire-releasing part of the terminal 2 will relax, that is, there is a margin compared to the stretched state. At this time, the reset spring 71 will pull the swing arm 6 back, so the relaxation margin can be known by the size of the pullback force.

[0029] capable of being transported so as to be wound when being wound; The swing arm 6 supports the middle part of the wire reel 4 and is located in the middle of the two terminals 2. When the wire reel 4 is not installed, the swing arm 6 is in a normal state. When the wire reel 4 is placed through the two terminals 2 and wound through the winding terminal 3, the swing arm 6 will be stretched. Therefore, by measuring the pulling force at the swing arm 6, the tension of the winding wire 4 can be known, thereby achieving the effect of the first level of conversion; two different terminals 2 can tighten the wire reel 4. At this time, when the wire reel 4 is installed at the swing arm 6, the position of the swing arm 6 should be where the wire reel 4 is stretched straight, that is, the straight line where the two terminals 2 are located. At this time, the reset spring 71 is in a stretched state, which is the reason why the swing arm 6 is stretched.

[0030] The expansion mechanism 5 and the adjustment mechanism 7 are the core driving parts used in this application to convert tension. They mainly amplify the change in tension by feeding back the change through a force balancing lever, and then read out the various readings through the angle meter and force sensor 8, thereby realizing dynamic measurement of tension during the winding process; the sensor 8 is mainly used here to detect the limit threshold of tension, so that the winding column 3 can be released through the expansion mechanism 5 before reaching the limit threshold, avoiding problems such as excessive tension causing the winding wire 4 to break.

[0031] The winding poles 3 are distributed in a ring array, and the tops of the winding poles 3 are in contact with each other in pairs at the initial position.

[0032] The winding column 3 is controlled by the hydraulic drive below, which is similar to a three-jaw chuck structure. The figure shows that they are close to each other, that is, the state of taking up and paying out the line. When winding is required, the hydraulic mechanism is driven to make the winding column 3 expand outward to the specified position, and then the winding column 3 is rotated to realize the winding process.

[0033] like Figure 7 、 8 As shown in Figure 9, the expansion mechanism 5 includes a slide groove 51, a slider 52, a support plate 53 and a driving block 54. The slide groove 51 is opened on the winding post 3, and the slider 52 slides in the slide groove 51. The support plate 53 is connected to the slider 52. The bottom of the support plate 53 is rotatably connected to the bottom of the winding post 3. The driving block 54 is installed on the lower edge of the support plate 53 and is located at the outer ring position of the winding post 3.

[0034] The guide rail 53 is provided with a plurality of guide rails 51 and a plurality of guide rails 52, and the guide rails 53 are provided with a plurality of guide rails 53.

[0035] The driving block 54 is located on the outside of the winding post 3, and is mainly used to drive the support plate 53 to rotate along the winding post 3. The specific method is: when the winding post 3 expands outward to the winding position, the driving block 54 corresponds to the bottom of the support plate 53 on the winding post 3, and then the driving block 54 is squeezed to push the bottom of the support plate 53 to rotate around the hinge point, so that the bottom of the support plate 53 folds toward the center, and then the top of the support plate 53 will fold outward, thereby forming a winding diameter larger than the winding post 3, and the initially wound wire will also expand slightly, thereby tightening the wound wire, and at the same time arranging the wire in layers to avoid the wires crossing each other to form a messy state.

[0036] like Figure 4 、 5 As shown, the adjustment mechanism 7 includes a reset spring 71, a fixed shaft 72, a transmission rod 73, a connecting rod 74, an adjustment rod 75 and a drive ring 76. The reset spring 71 is installed between the swing arm 6 and the terminal 2, the fixed shaft 72 is installed on the terminal 2, the transmission rod 73 is installed on the fixed shaft 72 and is rotatably connected to the swing arm 6, the connecting rod 74 is installed at the end of the transmission rod 73, the adjustment rod 75 is installed at the bottom end of the connecting rod 74, the drive ring 76 is installed at the bottom of the winding column 3, and the drive ring 76 cooperates with the drive block 54.

[0037] The return spring 71 is the core component of the swing arm 6 for adjusting the tension. When the tension is small, the return spring 71 will gradually reset, that is, the return spring 71 is equivalent to the tension spring at this point, so that the tension detection reading of the sensor 8 is reduced. In the process of resetting the return spring 71, the transmission rod 73 on the fixed shaft 72 is rotated, and the principle of the product of force and lever arm is equal, so as to convert the small tension change into a large change at the connecting rod 74 and the adjusting rod 75. Then the adjusting rod 75 can drive the driving ring 76 to squeeze the driving block 54 when the winding column 3 rotates. On the one hand, the rotation angle of the transmission rod 73 can be used to know the range of tension change at this point, as well as the tension when the line is taut (the reset spring 71 can be calculated based on the deflection angle). The distance that the spring 71 is reset, at this time, the specific force size is known by multiplying the distance and the elastic modulus of the reset spring 71). On the other hand, the range of tension change can be known by comparing the changes in the readings before and after the sensor 8, which can be compared with the tension change range obtained by the angle detector, thereby improving the accuracy of dynamic tension detection on the one hand; on the other hand, the winding tension can be automatically adjusted during the winding process, which can ensure that the winding 4 maintains a constant tension during the winding process, thereby ensuring that the winding 4 is arranged neatly, reducing stress concentration, improving the overall performance of the junction box, and improving production efficiency; the stable winding tension reduces repeated adjustments and winding 4 losses caused by unstable tension, thereby improving the continuous operation capacity and production efficiency of the production line.

[0038] The reset spring 71 here uses a high-rigidity spring and optimizes the preload force to shorten the reset time and avoid response lag caused by inertia during high-speed winding, which affects the dynamic adjustment accuracy; When the value of the sensor 8 change is equal to the value calculated by the angle detector (given above the calculation), the range of tension change is an accurate value. If they are not equal, it means that there are inaccuracies in the values ​​detected by the sensor 8 or the angle detector. Since the initial reset spring 71 is in a stretched state under the action of the straightened winding wire 4, the value of the sensor 8 is fixed at this time. If the initial value of the sensor 8 is correct, the value detected by the sensor 8 shall prevail after relaxation compensation. When the sensor 8 is damaged or caused by external interference to cause inaccurate values ​​(which can be known initially), the angle detector can be used as a backup detector to measure the tension during winding, thereby ensuring that the tension can be detected at all times in the production line, thereby improving the continuity and accuracy of the detection.

[0039] The fixed part of the terminal 2 is used to fix the wire, and the wire-releasing part of the terminal 2 is used to clamp the wire. That is, before the winding post 3 rotates, the two different terminals 2 can tighten the wire 4. When the wire 4 is installed at the swing arm 6, the position of the swing arm 6 should be located at the position where the wire 4 is stretched straight, that is, the straight line where the two terminals 2 are located. At this time, the reset spring 71 is in a stretched state. As the winding post 3 gathers the wire 4, if the wire 4 is loose, the wire 4 between the winding post 3 and the wire-releasing part of the terminal 2 is loose, that is, there is a margin compared to being stretched straight. At this time, the reset spring 71 will pull the swing arm 6 back, so that the slack margin can be known by the size of the pullback force.

[0040] like Figure 6 As shown, the swing arm 6 is provided with a receiving slot 61, within which a compression spring 62 is mounted, with a clamping plate 63 mounted at one end of the compression spring 62. The provision of the receiving slot 61 allows for placement of the wire reel 4. The compression spring 62 and clamping plate 63 do not compensate for the tension of the wire reel 4; their core function is to securely clamp the wire reel 4. This allows the swing arm 6 to adapt to the demands of wire reels 4 of varying diameters and squeeze them. Furthermore, when tension is applied to the wire reel 4, the swing arm 6 can adjust the tension range for wires of varying diameters, thereby preventing errors caused by changes in the tension applied by the swing arm 6 to the wire reel 4 due to changes in the wire reel 4's diameter, which could affect the accuracy of the sensor 8's readings.

[0041] The slide groove 51 is arc-shaped, and the center of the arc of the slide groove 51 is the hinge point between the support plate 53 and the winding post 3. By setting the arc shape, the slider 52 can rotate around the winding post 3, so that when the support plate 53 rotates, the top winding position will not deviate significantly, thereby stabilizing the winding process.

[0042] like Figure 5 As shown, the support plates 53 are arranged in a ring array, and a concave surface 531 is formed on the support plates 53 .

[0043] After the driving block 54 drives the support plate 53 to fold, the concave surface 531 gradually flips outward from the top of the normal winding position, so that the concave surface 531 forms the outer circle winding area of ​​the original winding area, and the original winding will expand outward on the one hand and slide downward on the other hand after the support plate 53 is folded, and is restricted by the limiting grooves at the winding column 3 and the support plate 53. At this time, the winding will not move downward, and only there will be a force for outward expansion, which can tighten the winding tension of the outer circle. At the same time, the outer circle of the winding wire 4 will be wound along the concave surface 531, and the concave surface 531 is higher than the initial limiting groove, which can realize the layered bundling of the winding wire 4, thereby realizing the dynamic tension adjustment of the winding wire 4, and also changing the spiral position of the winding wire 4, thereby avoiding the winding wire 4 from forming an irregular disk shape, but forming a spiral shape that gradually spirals upward, thereby improving the neatness of the winding; at the same time, there will be no problem of tension increase due to the interweaving of the winding wires 4, thereby improving the accuracy of tension detection during the winding process of the winding wire 4.

[0044] like Figure 10 As shown, an electric push rod 9 is provided near the inner side of the swing arm 6 , and the sensor 8 is connected to the electric push rod 9 . The tension of the swing arm 6 is sensed by the sensor 8. When the tension decreases, the pulling force of the return spring 71 is insufficient, and the expansion mechanism 5 and the adjustment mechanism 7 will be driven to dynamically compensate for the tension. At the same time, the change of this part of the tension will be detected by the angle sensor 8, and the change of the dynamic tension can be compared by comparing the two value changes before and after the sensor 8. When the tension increases, the possible reason is that the winding post 3 rotates too fast, resulting in the untimely delivery of the winding wire 4 of the terminal 2. The sensor 8 has a limit threshold. When the value is greater than the limit threshold, the electric push rod 9 is started, and the electric push rod 9 pushes the transmission rod 73, that is, reacts on the swing arm 6, thereby causing the transmission rod 73 to rotate around the fixed axis 72. The transmission rod 73 will drive the swing arm 6 to expand outward. The expansion of the swing arm 6 will quickly pull the terminal 2 on one side of the swing arm 6, so that the winding wire 4 between the terminal 2 is not straightened, and the margin increases. At this time, the tension of the winding wire 4 at the winding post 3 is instantly reduced, thereby avoiding problems such as the winding wire 4 at the winding post 3 breaking due to excessive tension.

[0045] The above is one of the methods, in which the sensor 8 can also be connected to the driving mechanism (such as a motor or a lateral displacement unit) below the winding post 3, so that the winding post 3 can be stopped or retracted inward when the limit threshold of the sensor 8 is reached, thereby ensuring that the wire 4 at the winding post 3 will not be damaged due to excessive tension.

[0046] like Figure 9As shown, the winding rod 3 is provided with limit blocks 31 on the upper and lower surfaces, and the opposite surface of the limit blocks 31 is provided with an arc surface 311. The limit blocks 31 can constrain the gathering position of the winding wire 4, thereby preventing the winding wire 4 from sliding downward due to gravity. On the other hand, the arc surface 311 can arrange the winding wire 4 wound on the upper side along the track, thereby cooperating with the concave surface 531 to achieve the arrangement of the position of the winding wire 4, improving the neatness of the winding wire 4 during the gathering process.

[0047] The binding post 2 is aligned with the bottom end of the winding post 3, and a driving mechanism is provided at the bottom end of the winding post 3. The binding post 2 is aligned with the bottom end of the winding post 3 so that when the support plate 53 is not flipped, the coiled wire 4 is formed in a normal position. When the tension decreases, the coiled wire 4 is formed into a spiral upward bundle with an opening facing upward, which facilitates removal when the winding post 3 is retracted, thereby improving the convenience of winding and retrieving the wire 4.

[0048] The driving mechanism is a prior art, which is used to drive the winding post 3 to slide and the winding post 3 to rotate as a whole. It will not be described in detail here and is only used for supplementary explanation.

[0049] like Figure 1-10 As shown, the terminal 2 is divided into a fixing part and a wire-releasing part. The fixing part is mainly used to fix one end of the wire, so that the wire end can be restrained when winding. The middle winding post 3 winds and stores the wire. At this time, the tension of the winding wire 4 during the winding process can be known by detecting the tension at the winding post 3. The other end of the terminal 2 adopts a pulley transmission method. Through the double pulley method, the winding wire 4 can be transmitted, so that it can be wound when winding. The reset spring 71 is in a stretched state after the winding wire 4 is installed, thereby ensuring that the winding wire 4 is in a straight state in the initial state. When the tension decreases during the winding process, the reset spring 71 will gradually reset, thereby reducing the tension detection reading of the sensor 8. In the process of resetting the reset spring 71, the transmission rod 73 on the fixed shaft 72 is rotated, and the principle of the product of force and lever arm is equal, so that the small tension change is converted into a large change at the connecting rod 74 and the adjusting rod 75, and then the adjusting rod 75 can drive the driving ring 76 to squeeze the driving block 54 when the winding column 3 rotates. At this time, the driving block 54 corresponds to the bottom of the support plate 53 on the winding column 3, and then the driving block 54 is squeezed. The bottom of the support plate 53 can be pushed to rotate around the hinge point, so that the bottom of the support plate 53 will fold toward the center, and then the top of the support plate 53 will fold outward, thereby forming a winding diameter larger than the winding column 3. The initially wound reel 4 can also expand outward, thereby tightening the wound reel 4, and at the same time arranging the reel 4 in layers. On the one hand, the slack tension value and the tension size when the reel 4 is tightened can be calculated by calculating the rotation angle of the transmission rod 73. On the other hand, the range of tension change can be known by comparing the reading changes before and after the sensor 8, and then it can be compared with the tension value calculated by the angle detector, thereby realizing dynamic detection and dynamic adjustment of tension during the winding process.

[0050] The above shows and describes the basic principles and beneficial effects of the present invention. At the same time, the present invention is not limited to the above embodiments. Without departing from the effects and scope of the present invention, the present invention may have various changes and improvements. These changes and improvements all fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for dynamically measuring the winding tension of a junction box, characterized by: The invention comprises a terminal (2) and a winding post (3) arranged in a housing (1), a winding wire (4) transmitted from the two terminal posts (2) to the winding post (3), an expansion mechanism (5), a swing arm (6), an adjustment mechanism (7) and a sensor (8), wherein the expansion mechanism (5) is located below the center of the winding post (3), the swing arm (6) is installed between the terminal post (2) and the winding post (3), the adjustment mechanism (7) is installed between the swing arm (6) and the expansion mechanism (5), and the sensor (8) is installed at the swing arm (6). The swing arm (6) straightens the winding wire (4) through the adjustment mechanism (7), and when the winding wire (4) at the terminal post (2) is relaxed, the swing arm (6) moves toward the center of the winding post (3) through the adjustment mechanism (7), and the adjustment mechanism (7) drives the expansion mechanism (5) to push the winding post (3) outward.

2. The device for dynamically measuring the winding tension of a junction box according to claim 1, characterized in that: The winding poles (3) are distributed in a ring array, and the top ends of the winding poles (3) are in contact with each other in pairs at an initial position.

3. The device for dynamically measuring the winding tension of a junction box according to claim 2, characterized in that: The expansion mechanism (5) includes a slide groove (51), a slider (52), a support plate (53) and a drive block (54), wherein the slide groove (51) is provided on the winding post (3), the slider (52) is located in the slide groove (51) and slides, the support plate (53) is connected to the slider (52), the bottom of the support plate (53) is rotatably connected to the bottom of the winding post (3), and the drive block (54) is installed at the lower edge of the support plate (53) and is located at the outer ring position of the winding post (3).

4. The device for dynamically measuring the winding tension of a junction box according to claim 3, characterized in that: The adjustment mechanism (7) comprises a return spring (71), a fixed shaft (72), a transmission rod (73), a connecting rod (74), an adjustment rod (75) and a drive ring (76), wherein the return spring (71) is mounted between the swing arm (6) and the terminal (2), the fixed shaft (72) is mounted on the terminal (2), the transmission rod (73) is mounted on the fixed shaft (72) and is rotatably connected to the swing arm (6), the connecting rod (74) is mounted on the end of the transmission rod (73), the adjustment rod (75) is mounted on the bottom end of the connecting rod (74), the drive ring (76) is mounted on the bottom of the winding column (3), and the drive ring (76) cooperates with the drive block (54).

5. The device for dynamically measuring the winding tension of a junction box according to claim 4, characterized in that: The swing arm (6) is provided with a placement groove (61), a compression spring (62) is installed in the placement groove (61), and a clamping plate (63) is installed at one end of the compression spring (62).

6. The device for dynamically measuring the winding tension of a junction box according to claim 4, characterized in that: The slide groove (51) is arc-shaped, and the center of the arc of the slide groove (51) is the hinge point between the support plate (53) and the winding column (3).

7. The device for dynamically measuring the winding tension of a junction box according to claim 6, characterized in that: The support plates (53) are arranged in a ring array, and a concave surface (531) is provided on the support plates (53).

8. The device for dynamically measuring the winding tension of a junction box according to claim 5, characterized in that: An electric push rod (9) is provided near the inner side of the swing arm (6), and the sensor (8) is connected to the electric push rod (9).

9. The device for dynamically measuring the winding tension of a junction box according to claim 6, characterized in that: Limit blocks (31) are provided on the upper and lower surfaces of the winding column (3), and an arc surface (311) is provided on the opposite surface of the limit block (31).

10. The device for dynamically measuring the winding tension of a junction box according to claim 9, characterized in that: The terminal (2) is aligned with the bottom end of the winding post (3), and a driving mechanism is provided at the bottom end of the winding post (3).

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