Tension control mechanism for a signal cable twisting device

Abstract

The present invention relates to the field of cable production, and particularly to a tension control mechanism for a signal cable twisting device, including a tension control unit. In the present invention, a driving mechanism is provided to drive the movement of the upper limit plate unit, and in cooperation with the upper and lower synchronous adjustment unit and the limit unit, the synchronous movement of the upper limit plate unit and the lower limit plate can be achieved, so that the distances between the upper and lower tension wheels and the guide wheels can be adjusted simultaneously, realizing the tension control of the signal cable, enabling both the guide wheels and the tension wheels to be quickly adjusted, with a larger span of their distances. Compared with the traditional situation where only the tension wheels can be adjusted, the range of tension adjustment of this tension control unit is larger, the adjustment range of the distance between the tension wheels and the guide wheels is wider, and all the tension wheels can be controlled simultaneously at one time. Compared with the traditional method that can only adjust a single tension wheel at one time, the efficiency is higher, solving the core problems of low precision, slow response, and poor coordination of the traditional tension control mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of cable production, and in particular to a tension control mechanism for a signal cable twisting device. Background Art

[0002] In modern communication and electrical systems, signal cables play a crucial role in transmitting various key signals, and their quality is directly related to the stability and accuracy of signal transmission. In the production process of signal cables, the twisting process is a crucial step. In the existing twisting equipment, during the process of twisting and winding the signal cable onto the winding roller, a tension control mechanism for the signal cable is often set up. The tension control mechanism ensures that the cable is evenly wound on the winding roller by increasing the tension of the signal cable output to the winding roller, and avoids overlapping lines caused by tension fluctuations.

[0003] However, traditional tension control mechanisms mostly adopt mechanical adjustment schemes to control the tension by adjusting the position of the tension pulley. However, such mechanical structures rely on manual experience for manual adjustment, and it is difficult to quickly adjust the tension in real time according to the winding situation. Moreover, the tension pulley and the guiding pulley are independently controlled, resulting in that the operator can only adjust a single tension pulley at a time, with slow efficiency, and there is a lack of a synchronous adjustment mechanism, which easily causes uneven twisting pitches due to tension imbalance. In addition, the traditional tension pulley lacks an anti-detachment design, and the cable is easily detached from the pulley groove in a slack state, affecting the continuity of production. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a tension control mechanism for a signal cable twisting device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A tension control mechanism for a signal cable twisting device includes a tension control unit. The tension control unit includes a mounting table. On the upper surface of the mounting table, first guide rail units are symmetrically and vertically arranged. On each first guide rail unit, a sliding mounting block is vertically movably arranged. An upper limit plate unit is installed between the sliding mounting blocks on the first guide rail units. Between the two first guide rail units, second guide rails are vertically and symmetrically arranged. On each second guide rail, a sliding mounting block is vertically movably arranged. A lower limit plate is installed between the sliding mounting blocks on the second guide rails. An upper and lower synchronous adjustment unit is arranged between the upper limit plate unit and the lower limit plate;

[0007] The up-and-down synchronous adjustment unit is installed on the component mounting frame. The up-and-down synchronous adjustment unit is driven to move by a driving mechanism symmetrically arranged on the component mounting frame. The up-and-down synchronous adjustment unit includes a first support link and a second support link. The first support link and the second support link are cross-hinged together in an X shape. Support rollers for supporting the upper limit plate unit and the lower limit plate are arranged at both ends of the first support link and the second support link;

[0008] Single-rod bearings are rotatably arranged on the support rollers on one side of the first support link and the second support link for supporting the upper limit plate unit. The single-rod bearings are restricted in their movement trajectories by single-rod bearing limit frames symmetrically arranged on both sides, and the single-rod bearings always move horizontally on the single-rod bearing limit plate. The single-rod bearings drive vertical movement through the single-rod bearing limit plate;

[0009] Cable anti-drop mechanisms are arranged on the sliding mounting blocks on the first guide rail unit. The cable anti-drop mechanisms prevent the cables placed on the tensioning wheels from falling off through anti-drop frames, and the anti-drop frames move through the anti-drop mechanism limit plates on one side.

[0010] In addition, a preferred structure is that a housing is arranged on the mounting table. Tensioning wheels are rotatably arranged on the first guide rail units. Guide wheels are rotatably arranged on both sides of the first guide rail units. The guide wheels located between the two first guide rail units on both sides are respectively rotatably arranged on the second guide rail. The tensioning wheels and the guide wheels are both installed on the first guide rail unit and the second guide rail through sliding mounting blocks;

[0011] Chutes are provided on the sliding mounting blocks. A limit plate fitting head is arranged in the middle of one side wall of the sliding mounting block. The limit plate fitting head is used for installing the upper limit plate and the lower limit plate. An installation part is arranged on the other side wall of the sliding mounting block far from the limit plate fitting head. The plate body of the installation part is used for installing the guide wheels and the tensioning wheels. The cable anti-drop mechanism is installed on the upper surface of the sliding mounting block used for connecting the tensioning wheels.

[0012] In addition, a preferred structure is that the first guide rail unit includes a guide rail mounting block. A first guide rail is vertically arranged on the top of the guide rail mounting block. A sliding mounting block is vertically slidably matched with the first guide rail. An anti-drop mechanism limit plate is fixedly connected to the top surface of the first guide rail. An anti-drop mechanism limit surface is arranged on the anti-drop mechanism limit plate. The anti-drop mechanism limit surface is used to limit the movement range of the anti-drop frame.

[0013] In addition, a preferred structure is that limit units are symmetrically and vertically arranged on both sides of the component mounting frame on the upper surface of the mounting table. The limit units are used to support the lower limit plate while restricting the movement trajectory of the single-rod bearing. The limit units include a mounting bottom plate. A single-rod bearing limit frame is vertically arranged on the upper surface of the mounting bottom plate. A telescopic sleeve is vertically arranged on one side of the single-rod bearing limit frame;

[0014] A limiting telescopic rod is vertically and slidably fitted inside the telescopic sleeve. The limiting telescopic rod includes a telescopic rod body which is vertically and slidably fitted on the telescopic sleeve. A limiting top plate is horizontally and fixedly connected to the top end of the telescopic rod body, and the limiting top plate is used to abut against the lower limiting plate.

[0015] A first spring is sleeved outside the telescopic sleeve. The top end of the first spring abuts against the bottom surface of the limiting top plate, and the bottom end of the first spring abuts against the upper surface of the mounting base plate.

[0016] An arc-shaped guiding block is arranged at the top of the single-rod bearing limiting frame. The inner arc concave surface on the side of the arc-shaped guiding block close to the single-rod bearing is used to limit the movement range of the single-rod bearing.

[0017] In addition, preferably, the component mounting frame includes a servo cylinder mounting seat which is arranged on the upper surface of the mounting table. Driving mechanisms are symmetrically mounted on the upper surface of the servo cylinder mounting seat. A cross-support mechanism connecting rod is arranged in the middle of the upper surface of the servo cylinder mounting seat. The cross-connection part of the first support link and the second support link is mounted on the cross-support mechanism connecting rod.

[0018] In addition, preferably, the driving mechanism includes a servo cylinder which is vertically mounted on the upper surface of the servo cylinder mounting seat. A piston rod is assembled at the top output end of the servo cylinder. Piston rod connecting plates are arranged at the top ends of the piston rods, and the piston rod connecting plates are used to connect with the upper limiting plate unit.

[0019] In addition, preferably, the upper limiting plate unit includes an upper limiting plate. A single-rod bearing limiting plate is mounted on the surface of the side of the upper limiting plate away from the tensioning wheel. The two ends of the upper limiting plate are used to be assembled and connected with the sliding mounting blocks on the two sides of the first guide rail.

[0020] An electric cylinder connecting plate is arranged in the middle of the upper limiting plate, and the electric cylinder connecting plate is used for the assembly connection of the piston rod connecting plate. Single-rod bearing limiting plate mounting grooves for mounting the single-rod bearing limiting plates are symmetrically arranged on the surface of the side of the upper limiting plate away from the tensioning wheel.

[0021] A single-rod bearing limiting sliding groove is horizontally and penetratingly opened on the single-rod bearing limiting plate. The single-rod bearing limiting sliding groove is used for the horizontal sliding of the single-rod bearing. Upper limiting plate mounting blocks are symmetrically arranged at both ends of the plate body of the single-rod bearing limiting plate, and the upper limiting plate mounting blocks are used to be mounted at the single-rod bearing limiting plate mounting grooves.

[0022] In addition, preferably, the cable anti-detachment mechanism includes a sliding frame which is fixed on the upper surface of the sliding mounting block on the first guide rail. The sliding frame includes sliding rods which are symmetrically arranged up and down, and an anti-detachment frame is slidably fitted on the sliding rods.

[0023] The anti - shedding frame includes a sliding connection frame. The bottom plate of the sliding connection frame is slidably fitted on the sliding rod. A cable anti - shedding plate is fixedly connected to the top of the sliding connection frame. A limiting convex block is fixedly connected to one side of the bottom plate of the sliding connection frame, and the limiting convex block is in contact with the limiting surface of the anti - shedding mechanism.

[0024] Second springs are sleeved on the sliding rods. One end of each second spring abuts against the surface of the plate of the sliding frame near the tension pulley, and the other end abuts against the surface of the bottom plate of the sliding connection frame.

[0025] A plurality of anti - shedding limiting rods are arranged evenly on the surface of the cable anti - shedding plate facing the tension pulley. The anti - shedding limiting rods are in a semi - circular arc shape and are used to block above the tension pulley.

[0026] In addition, preferably, limiting abutting plates are fixedly connected to both sides of the plate body of the lower limiting plate. The limiting abutting plates are used to be abutted by the limiting top plate. A lower roller sliding surface is arranged on the upper surface of the lower limiting plate. The lower roller sliding surface is used for the supporting rollers at the bottoms of the first support connecting rod and the second support connecting rod to slide. The lower limiting plate is installed on the sliding mounting blocks located at both sides at the second guide rail.

[0027] The beneficial effects of the present invention are as follows: In the present invention, the driving mechanism is set to drive the movement of the upper limiting plate unit, and in cooperation with the up - and - down synchronous adjustment unit and the limiting unit, the synchronous movement of the upper limiting plate unit and the lower limiting plate can be realized, so that the distances between the upper and lower tension pulleys and the guide pulleys can be adjusted simultaneously, the tension control of the signal cable can be realized, and both the guide pulley and the tension pulley can be quickly adjusted, with a larger span of the distance between them. Compared with the traditional situation where only the tension pulley can be adjusted, the range of the tension size adjusted by this tension control unit is larger, the adjustment range of the distance between the tension pulley and the guide pulley is wider, and all the tension pulleys can be controlled simultaneously at one time. Compared with the traditional situation where only a single tension pulley can be adjusted at one time, the efficiency is higher, and the core problems of low precision, slow response, and poor coordination of the traditional tension control mechanism are solved. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the main structure inside the tension adjustment unit;

[0029] Figure 2 It is a schematic structural diagram of the whole tension control unit;

[0030] Figure 3 It is a schematic structural diagram of the tension control unit in combination with the pair - twisting unit and the winding unit;

[0031] Figure 4 It is a schematic structural diagram of the driving mechanism installed on the component mounting frame;

[0032] Figure 5Schematic diagram of the structure where no driving mechanism is installed on the component mounting bracket;

[0033] Figure 6 Schematic diagram of the enlarged partial structure of the limiting unit;

[0034] Figure 7 Schematic diagram of the structure of the single-rod bearing limiting bracket;

[0035] Figure 8 Schematic diagram of the structure after the lower limiting plate, sliding mounting block, and guide wheel are disassembled;

[0036] Figure 9 Schematic diagram of the structure of the upper and lower synchronous adjustment unit;

[0037] Figure 10 Schematic diagram of the enlarged partial structure of the support roller;

[0038] Figure 11 Schematic diagram of the structure after the driving mechanism and the upper limiting plate unit are disassembled;

[0039] Figure 12 Schematic diagram of the structure of the single-rod bearing limiting plate;

[0040] Figure 13 Schematic diagram of the structure of the upper limiting plate;

[0041] Figure 14 Schematic diagram of the structure after the upper limiting plate, sliding mounting block, and tensioning wheel are disassembled;

[0042] Figure 15 Schematic diagram of the structure of the anti-drop limiting plate;

[0043] Figure 16 Schematic diagram of the structure of the cable anti-drop mechanism in the limiting state;

[0044] Figure 17 Schematic diagram of the structure after the cable anti-drop mechanism and the sliding mounting block are disassembled;

[0045] Figure 18 Schematic diagram of the structure after the cable anti-drop mechanism is disassembled;

[0046] Figure 19 Schematic diagram of the structure of the cable anti-drop plate.

[0047] In the figure: 01, tension control unit; 011, housing; 012, mounting table; 02, twisting unit; 03, winding unit; 04, guide wheel; 05, tensioning wheel; 06, sliding mounting block; 061, limit plate assembly head; 062, chute; 063, mounting part; 1, first guide rail unit; 11, guide rail mounting block; 12, first guide rail; 13, anti-drop mechanism limit plate; 131, anti-drop mechanism limit surface; 2, second guide rail; 3, limit unit; 31, mounting base plate; 32, single-rod bearing limit frame; 321, arc-shaped guide block; 33, telescopic sleeve; 34, limit telescopic rod; 341, limit top plate; 342, telescopic rod body; 35, first spring; 4, up-and-down synchronous adjustment unit; 41, first support link; 42, second support link; 43, support roller; 431, single-rod bearing; 5, upper limit plate unit; 51, upper limit plate; 511, single-rod bearing limit plate mounting groove; 512, electric cylinder connecting plate; 52, single-rod bearing limit plate; 521, single-rod bearing limit chute; 522, upper limit plate mounting block; 6, cable anti-drop mechanism; 61, sliding frame; 611, sliding rod; 62, anti-drop frame; 621, limit convex block; 622, sliding connection frame; 623, cable anti-drop plate; 6231, anti-drop limit rod; 63, second spring; 7, component mounting frame; 71, servo electric cylinder mounting seat; 72, cross support mechanism connecting rod; 8, drive mechanism; 81, servo electric cylinder; 82, piston rod; 83, piston rod connecting plate; 9, lower limit plate; 91, lower roller sliding surface; 92, limit abutting plate. Detailed implementation mode

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0049] Refer to Figure 1-19 , a tension control mechanism for a signal cable twisting device, including a tension control unit 01. The tension control unit 01 includes a mounting table 012. A first guide rail unit 1 is symmetrically and vertically arranged on the upper surface of the mounting table 012. A sliding mounting block 06 is vertically and movably arranged on each of the first guide rail units 1. An upper limit plate unit 5 is installed between the sliding mounting blocks 06 on the first guide rail units 1. A second guide rail 2 is symmetrically and vertically arranged between the two first guide rail units 1. A sliding mounting block 06 is vertically and movably arranged on each of the second guide rails 2. A lower limit plate 9 is installed between the sliding mounting blocks 06 on the second guide rails 2. An up-and-down synchronous adjustment unit 4 is arranged between the upper limit plate unit 5 and the lower limit plate 9. The up-and-down synchronous adjustment unit 4 can adjust multiple tensioning wheels 05 and guide wheels 04 at one time.

[0050] Among them, the up-and-down synchronous adjustment unit 4 is installed on the component mounting bracket 7. The up-and-down synchronous adjustment unit 4 is driven to move through the driving mechanisms 8 symmetrically arranged on the component mounting bracket 7. The up-and-down synchronous adjustment unit 4 includes a first support link 41 and a second support link 42. The first support link 41 and the second support link 42 are cross-hinged together in an X shape. Support rollers 43 for supporting the upper limit plate unit 5 and the lower limit plate 9 are provided at both ends of the first support link 41 and the second support link 42. The support rollers 43 are used for support and also for sliding.

[0051] In addition, single-rod bearings 431 are rotatably arranged on the support rollers 43 of the first support link 41 and the second support link 42 for supporting one side of the upper limit plate unit 5. The movement trajectories of the single-rod bearings 431 are restricted by single-rod bearing limit frames 32 symmetrically arranged on both sides. And the single-rod bearings 431 always move horizontally on the single-rod bearing limit plate 52. The single-rod bearings 431 drive vertical movement through the single-rod bearing limit plate 52. Cable anti-detachment mechanisms 6 are provided on the sliding mounting blocks 06 mounted on the first guide rail unit 1. The cable anti-detachment mechanisms 6 prevent the cables placed on the tension wheels 05 from detaching through the anti-detachment frames 62. And the anti-detachment frames 62 move through the anti-detachment mechanism limit plates 13 on one side.

[0052] Moreover, a housing 011 is provided on the mounting table 012. Tension wheels 05 are rotatably arranged on the first guide rail unit 1. Guide wheels 04 are rotatably arranged on both sides of the first guide rail unit 1. The guide wheels 04 located between the two first guide rail units 1 are respectively rotatably arranged on the second guide rail 2. The tension wheels 05 and the guide wheels 04 are both installed on the first guide rail unit 1 and the second guide rail 2 through the sliding mounting blocks 06. The sliding mounting blocks 06 achieve vertical sliding on the first guide rail 12 and the second guide rail 2.

[0053] In addition, chutes 062 are provided on the sliding mounting blocks 06. A limit plate assembly head 061 is provided in the middle of one side wall of the sliding mounting block 06. The limit plate assembly head 061 is used for installing the upper limit plate 51 and the lower limit plate 9. An installation part 063 is provided on the other side wall of the sliding mounting block 06 away from the limit plate assembly head 061. The plate body of the installation part 063 is used for installing the guide wheels 04 and the tension wheels 05. The cable anti-detachment mechanism 6 is installed on the upper surface of the sliding mounting block 06 used for connecting the tension wheel 05.

[0054] At the same time, the first guide rail unit 1 includes a guide rail mounting block 11. A first guide rail 12 is vertically provided on the top of the guide rail mounting block 11. A sliding mounting block 06 is vertically slidably engaged with the first guide rail 12. An anti-detachment mechanism limit plate 13 is fixedly connected to the top surface of the first guide rail 12. An anti-detachment mechanism limit surface 131 is provided on the anti-detachment mechanism limit plate 13. The anti-detachment mechanism limit surface 131 is used for restricting the movement range of the anti-detachment frame 62.

[0055] In addition, limiting units 3 are vertically arranged symmetrically on both sides of the component mounting frame 7 on the upper surface of the mounting platform 012. The limiting units 3 are used to support the lower limiting plate 9 while limiting the movement trajectory of the single-rod bearing 431. The limiting units 3 include a mounting base plate 31, and a single-rod bearing limiting frame 32 is vertically arranged on the upper surface of the mounting base plate 31. A telescopic sleeve 33 is vertically arranged on one side of the single-rod bearing limiting frame 32.

[0056] Among them, the internal cavity of the telescopic sleeve 33 vertically slides with the limited telescopic rod 34, and the limited telescopic rod 34 includes a telescopic rod body 342. The telescopic rod body 342 vertically slides on the telescopic sleeve 33, and the top of the telescopic rod body 342 is horizontally fixedly connected to the limited top plate 341. The limited top plate 341 is used to support the lower limit plate 9, and the telescopic rod body 342 supports the upper lower limit plate 9 by telescoping.

[0057] Moreover, a first spring 35 is provided on the outside of the telescopic sleeve 33, the top end of the first spring 35 abuts against the bottom surface of the limiting top plate 341, and the bottom end of the first spring 35 abuts against the upper surface of the mounting base plate 31. An arc-shaped guide block 321 is provided on the top of the single-rod bearing limiting frame 32. The inner arc concave surface of the arc-shaped guide block 321 on the side close to the single-rod bearing 431 is used to limit the range of movement of the single-rod bearing 431. The arc-shaped guide block 321 ensures that the single-rod bearings 431 on both sides can approach each other at the same time.

[0058] At the same time, the component mounting frame 7 includes a servo electric cylinder mounting seat 71, which is arranged on the upper surface of the mounting platform 012. The driving mechanism 8 is symmetrically installed on the upper surface of the servo electric cylinder mounting seat 71. A cross support mechanism connecting rod 72 is arranged in the middle of the upper surface of the servo electric cylinder mounting seat 71, and the cross connection between the first support link 41 and the second support link 42 is installed on the cross support mechanism connecting rod 72.

[0059] In addition, the driving mechanism 8 includes a servo electric cylinder 81, which is vertically mounted on the upper surface of the servo electric cylinder mounting base 71. The top output end of the servo electric cylinder 81 is equipped with a piston rod 82, and the top of the piston rod 82 is provided with a piston rod connecting plate 83. The piston rod connecting plate 83 is used to connect with the upper limit plate unit 5. The servo electric cylinder 81 can accurately control the height of the upper limit plate 51 rising and falling.

[0060] Moreover, the upper limit plate unit 5 includes an upper limit plate 51. On one side surface of the upper limit plate 51 away from the tension pulley 05, a single-rod bearing limit plate 52 is installed. The two end heads of the upper limit plate 51 are used for assembling and connecting with the sliding mounting blocks 06 on the two first guide rails 12. In the middle of the upper limit plate 51, an electric cylinder connecting plate 512 is provided, and the electric cylinder connecting plate 512 is used for assembling and connecting with the piston rod connecting plate 83. On one side surface of the upper limit plate 51 away from the tension pulley 05, single-rod bearing limit plate mounting grooves 511 for installing the single-rod bearing limit plate 52 are symmetrically arranged. The single-rod bearing limit plate mounting grooves 511 are used for the quick positioning of the single-rod bearing limit plate 52.

[0061] In addition, a single-rod bearing limit sliding groove 521 is transversely opened through the single-rod bearing limit plate 52. The single-rod bearing limit sliding groove 521 is used for the transverse sliding of the single-rod bearing 431. At both ends of the plate body of the single-rod bearing limit plate 52, upper limit plate mounting blocks 522 are symmetrically arranged. The upper limit plate mounting blocks 522 are used for installing at the single-rod bearing limit plate mounting grooves 511.

[0062] Among them, the cable anti-dropping mechanism 6 includes a sliding frame 61. The sliding frame 61 is fixed on the upper surface of the sliding mounting block 06 on the first guide rail 12. The sliding frame 61 includes sliding rods 611 symmetrically arranged up and down. A anti-dropping frame 62 is slidably matched with the sliding rods 611, and the sliding rods 611 ensure that the anti-dropping frame 62 can move linearly back and forth.

[0063] At the same time, the anti-dropping frame 62 includes a sliding connection frame 622. The bottom plate body of the sliding connection frame 622 is slidably matched with the sliding rods 611. At the top of the sliding connection frame 622, a cable anti-dropping plate 623 is fixedly connected. On one side of the bottom plate body of the sliding connection frame 622, a limit convex block 621 is fixedly connected. The limit convex block 621 contacts the anti-dropping mechanism limit surface 131. Second springs 63 are sleeved on the sliding rods 611. One end of each second spring 63 abuts against the surface of the plate body of the sliding frame 61 close to the tension pulley 05, and the other end abuts against the surface of the bottom plate body of the sliding connection frame 622. The second springs 63 are used to realize the reset of the sliding connection frame 622.

[0064] And, on the surface of the cable anti-dropping plate 623 facing the tension pulley 05, a plurality of anti-dropping limit rods 6231 are arranged in a uniform array. The anti-dropping limit rods 6231 are in a semi-circular arc shape. The anti-dropping limit rods 6231 are used to block above the tension pulley 05, and the anti-dropping limit rods 6231 are used to ensure that the cable will not fall off the tension pulley 05.

[0065] Moreover, on both sides of the plate body of the lower limit plate 9, there are fixed limit abutting plates 92 which are used to be abutted by the limit top plate 341. On the upper surface of the lower limit plate 9, there is a lower roller sliding surface 91 which is used for the support rollers 43 at the bottoms of the first support link 41 and the second support link 42 to slide. The lower limit plate 9 is installed on the sliding mounting blocks 06 located on both sides at the second guide rail 2. The limit abutting plate 92 is used to be abutted by the limit telescopic rod 34.

[0066] In this embodiment, after the wires are twisted by the twisting unit 02 and the signal cable is twisted by the twisting unit 02, the twisted signal cable is wound up by the winding unit 03 on one side. During this period, the signal cable will pass through the tension control unit 01. The signal cable enters the interior through the inlet on one side of the outer shell 011, and then through the guiding of the guiding wheel 04 near the twisting unit 02. The signal cable passes through one of the tension wheels 05 at the top and then through the guiding of the two guiding wheels 04 below, and then through another tension wheel 05. Finally, it is guided to the winding unit 03 by the guiding wheel 04 near the winding unit 03. In this process, the tension of the signal cable is adjusted by adjusting the two guiding wheels 04 between the two tension wheels 05 to ensure a stable tension, which can ensure that the cable is evenly wound on the winding unit 03 and avoid problems such as overlapping wires, collapsed coils or "bell mouths" caused by tension fluctuations, and reduce the frictional damage during subsequent unwinding.

[0067] First, when installing the signal cable onto the tension control unit 01, the first support link 41 and the second support link 42 are in a cross-contracted state at this time. At this time, the distance between the movable tension wheel 05 and the guiding wheel 04 above and below is the shortest, which is convenient for installing the signal cable. At this time, the anti-drop frame 62 does not contact the anti-drop mechanism limiting plate 13, and the limit convex block 621 is not restricted by the anti-drop mechanism limiting surface 131. At this time, the second spring 63 abuts against the sliding connection frame 622, so that the anti-drop limiting rod 6231 is not located above the groove of the tension wheel 05, which is convenient for the operator to install the signal cable through the tension wheel 05. After installation, the tension can be adjusted.

[0068] When adjusting the tension, by controlling the servo electric cylinder 81, the piston rod 82 of the servo electric cylinder 81 extends, thereby pushing the upper limit plate 51 upward. As the upper limit plate 51 moves upward, the single-rod bearing limit plate 52 moves upward synchronously, causing the single-rod bearing 431 in the single-rod bearing limit chute 521 to move upward. And while the single-rod bearing 431 moves upward, the single-rod bearing 431 will be squeezed by the arc-shaped guide blocks 321 on both sides, so that the single-rod bearings 431 on both sides move closer to each other as they slide on the concave surface of the arc-shaped guide block 321, thereby realizing the rotation of the first support link 41 and the second support link 42 around their intersection point. The support rollers 43 at the upper and lower ends of the first support link 41 and the second support link 42 move closer to each other. When the first support link 41 and the second support link 42 cooperate with the support rollers 43 to push the upper limit plate 51 upward at the same time, they can also synchronously press the lower limit plate 9 downward. The support rollers 43 at the bottom roll on the lower roller sliding surface 91 and press the limit telescopic rod 34 downward, causing the first spring 35 to contract. Through the above operations, the distance between the upper limit plate 51 and the lower limit plate 9 can be quickly increased.

[0069] And while the upper limit plate 51 moves, it drives the sliding mounting block 06 on the first guide rail 12 to slide upward and drives the tension pulley 05 to move upward. While the lower limit plate 9 moves, it drives the sliding mounting block 06 on the second guide rail 2 to slide downward and drives the guide pulley 04 to move downward, so that the distance between the upper and lower tension pulleys 05 and the guide pulley 04 is increased, thereby realizing the slow tensioning of the signal cable and real-time adjustment according to the situation of the signal cable being wound onto the winding unit 03. And in this way, it is realized that both the guide pulley 04 and the tension pulley 05 can be quickly adjusted, and their distance span is larger. Compared with the traditional situation where only the tension pulley 05 can be adjusted, the range of the tension size adjusted by this tension control unit 01 is larger, and the adjustment range of the distance between the tension pulley 05 and the guide pulley 04 is wider.

[0070] Meanwhile, during the upward movement of the upper limit plate unit 5, as the sliding mounting block 06 on the first guide rail 12 moves upward, it drives the cable anti-drop mechanism 6 to rise synchronously. As a result, the limit bump 621 will slowly come into contact with the anti-drop mechanism limit plate 13. As the limit bump 621 is slowly resisted by the anti-drop mechanism limit surface 131, the anti-drop mechanism limit surface 131 will slowly resist the limit bump 621 and squeeze the limit bump 621, thereby driving the sliding connection frame 622 to slide on the slide bar 611. The second spring 63 contracts under the extrusion of the sliding connection frame 622. At the same time, the cable anti-drop plate 623 moves towards the tension pulley 05, so that the anti-drop limit rod 6231 can be located directly above the pulley groove of the tension pulley 05. This prevents the signal cable in a loose and non-tightened state from falling off the tension pulley 05 when it is twitched during the tightening of the signal cable, effectively ensuring that the signal cable always rests in the pulley groove of the tension pulley 05 after the signal cable is tightened.

[0071] When the servo cylinder 81 retracts the piston rod 82 and the upper limit plate 51 returns to the initial state, after the limit bump 621 separates from the anti-drop mechanism limit plate 13, the second spring 63 releases its elastic potential energy to facilitate pushing the sliding connection frame 622 and resetting it, causing the cable anti-drop plate 623 to move away from the tension pulley 05, which is convenient for the operator to perform subsequent installation of the signal cable.

[0072] Moreover, as the upper limit plate 51 moves downward and resets, the bottom support roller 43 moves upward and no longer presses on the lower roller sliding surface 91. The first spring 35 releases its elastic potential energy, causing the first spring 35 to push the telescopic rod body 342 to move vertically upward on the telescopic sleeve 33. The limit top plate 341 pushes the limit abutment plate 92 upward, thereby realizing the upward movement and resetting of the lower limit plate 9.

[0073] In the present invention, by setting the driving mechanism 8 to drive the movement of the upper limit plate unit 5 and cooperating with the upper and lower synchronous adjustment unit 4 and the limit unit 3, the synchronous movement of the upper limit plate unit 5 and the lower limit plate 9 can be achieved, enabling the distances between the upper and lower tension pulleys 05 and the guide pulleys 04 to be adjusted simultaneously, realizing the tension control of the signal cable, and enabling both the guide pulley 04 and the tension pulley 05 to be quickly adjusted, with a larger distance span. Compared with the traditional situation where only the tension pulley 05 can be adjusted, the range of tension adjustment of this tension control unit 01 is larger, the adjustment range of the distance between the tension pulley 05 and the guide pulley 04 is wider, and all the tension pulleys 05 can be controlled simultaneously at one time. Compared with the traditional situation where only a single tension pulley 05 can be adjusted at one time, the efficiency is higher, solving the core problems of low precision, slow response, and poor coordination of the traditional tension control mechanism.

[0074] Driven by the upper and lower synchronous adjustment unit 4 and the servo electric cylinder 81, through the first support link 41 and the second support link 42 with X-shaped cross hinges, the linkage lifting of the upper limit plate 51 and the lower limit plate 9 is realized, and the distance between multiple sets of tension wheels 05 and guide wheels 04 is synchronously controlled, significantly expanding the tension adjustment range span by more than 30%, and the response speed is increased by 50% compared with the traditional mechanical scheme.

[0075] The single-rod bearing limit frame 32 and the arc-shaped guide block 321 cooperate to restrict the lateral sliding trajectory of the single-rod bearing 431, ensure the smooth movement of the cross-link mechanism, and avoid tension oscillation caused by mechanical jamming.

[0076] The contact design between the anti-detachment mechanism limit surface 131 and the limit convex block 621 ensures that the anti-detachment frame 62 only retracts during cable installation / removal and is always in a protective state during the production process.

[0077] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A tension control mechanism for a signal cable twisting device, including a tension control unit (01), characterized by The described tension control unit (01) includes a mounting table (012). On the upper surface of the mounting table (012), first guide rail units (1) are symmetrically and vertically arranged. On each of the first guide rail units (1), a sliding mounting block (06) is vertically and movably arranged. Between the sliding mounting blocks (06) on the first guide rail units (1), an upper limit plate unit (5) is installed. Vertically and symmetrically between the two sides of the first guide rail units (1), second guide rails (2) are arranged. On each of the second guide rails (2), a sliding mounting block (06) is vertically and movably arranged. Between the sliding mounting blocks (06) on the second guide rails (2), a lower limit plate (9) is installed. Between the upper limit plate unit (5) and the lower limit plate (9), an up-and-down synchronous adjustment unit (4) is provided; the up-and-down synchronous adjustment unit (4) is installed on a component mounting frame (7). The up-and-down synchronous adjustment unit (4) is driven to move through a driving mechanism (8) symmetrically arranged on the component mounting frame (7). The up-and-down synchronous adjustment unit (4) includes a first support connecting rod (41) and a second support connecting rod (42). The first support connecting rod (41) and the second support connecting rod (42) are cross-hinged together to form an X shape. At both ends of the first support connecting rod (41) and the second support connecting rod (42), support rollers (43) for supporting the upper limit plate unit (5) and the lower limit plate (9) are provided; on the support rollers (43) of the first support connecting rod (41) and the second support connecting rod (42) for supporting one side of the upper limit plate unit (5), single-rod bearings (431) are rotatably arranged. The single-rod bearings (431) are restricted in their movement trajectories by single-rod bearing limit frames (32) symmetrically arranged on both sides, and the single-rod bearings (431) always move horizontally on a single-rod bearing limit plate (52). The single-rod bearings (431) drive vertical movement through the single-rod bearing limit plate (52); on the sliding mounting blocks (06) of the first guide rail units (1), cable anti-detachment mechanisms (6) are provided. The cable anti-detachment mechanisms (6) prevent the cables placed on the tension wheels (05) from detaching through an anti-detachment frame (62), and the anti-detachment frame (62) moves through an anti-detachment mechanism limit plate (13) on one side.

2. The tension control mechanism of a signal cable twisting device according to claim 1, characterized in that, An outer shell (011) is provided on the installation table (012). Tension wheels (05) are rotatably arranged on the first guide rail units (1), and guide wheels (04) are rotatably arranged on both sides of the first guide rail units (1). The guide wheels (04) located between the two first guide rail units (1) are respectively rotatably arranged on the second guide rail (2). The tension wheels (05) and the guide wheels (04) are both installed on the first guide rail unit (1) and the second guide rail (2) through sliding installation blocks (06). Chutes (062) are provided on the sliding installation blocks (06). A limiting plate assembly head (061) is arranged in the middle of one side wall of the sliding installation block (06). The limiting plate assembly head (061) is used for installing the upper limiting plate (51) and the lower limiting plate (9). An installation part (063) is arranged on the other side wall of the sliding installation block (06) away from the limiting plate assembly head (061). The plate body of the installation part (063) is used for installing the guide wheel (04) and the tension wheel (05). The cable anti-drop-off mechanism (6) is installed on the upper surface of the sliding installation block (06) used for connecting the tension wheel (05).

3. The tension control mechanism of a signal cable twisting device according to claim 1, characterized in that, The first guide rail unit (1) includes a guide rail installation block (11). A first guide rail (12) is vertically arranged on the top of the guide rail installation block (11). The sliding installation block (06) is vertically slidably matched with the first guide rail (12). An anti-drop-off mechanism limiting plate (13) is fixedly connected to the top surface of the first guide rail (12). An anti-drop-off mechanism limiting surface (131) is arranged on the anti-drop-off mechanism limiting plate (13). The anti-drop-off mechanism limiting surface (131) is used for limiting the movement range of the anti-drop-off frame (62).

4. The tension control mechanism of a signal cable twisting device according to claim 1, characterized in that, Limiting units (3) are symmetrically and vertically arranged on both sides of the component installation frame (7) on the upper surface of the installation table (012). The limiting units (3) are used for supporting the lower limiting plate (9) and restricting the movement track of the single-rod bearing (431) at the same time. The limiting unit (3) includes an installation bottom plate (31). A single-rod bearing limiting frame (32) is vertically arranged on the upper surface of the installation bottom plate (31). A telescopic sleeve (33) is vertically arranged on one side of the single-rod bearing limiting frame (32). A limiting telescopic rod (34) is vertically slidably matched with the inner cavity of the telescopic sleeve (33). The limiting telescopic rod (34) includes a telescopic rod body (342). The telescopic rod body (342) is vertically slidably matched with the telescopic sleeve (33). A limiting top plate (341) is horizontally fixedly connected to the top end of the telescopic rod body (342). The limiting top plate (341) is used for abutting against the lower limiting plate (9). A first spring (35) is sleeved outside the telescopic sleeve (33). The top end of the first spring (35) abuts against the bottom surface of the limiting top plate (341), and the bottom end of the first spring (35) abuts against the upper surface of the installation bottom plate (31). An arc-shaped guide block (321) is arranged on the top of the single-rod bearing limiting frame (32). The inner arc concave surface of the arc-shaped guide block (321) close to the single-rod bearing (431) is used for restricting the movement range of the single-rod bearing (431).

5. The tension control mechanism of a signal cable twisting device according to claim 4, characterized in that The component mounting bracket (7) includes a servo cylinder mounting base (71). The servo cylinder mounting base (71) is arranged on the upper surface of the mounting table (012). Driving mechanisms (8) are symmetrically mounted on the upper surface of the servo cylinder mounting base (71). A cross-support mechanism connecting rod (72) is arranged in the middle of the upper surface of the servo cylinder mounting base (71). The intersection of the first support link (41) and the second support link (42) is mounted on the cross-support mechanism connecting rod (72).

6. The tension control mechanism of a signal cable twisting device according to claim 5, characterized in that, The driving mechanism (8) includes a servo cylinder (81). The servo cylinder (81) is vertically mounted on the upper surface of the servo cylinder mounting base (71). A piston rod (82) is assembled at the top output end of the servo cylinder (81). Piston rod connecting plates (83) are arranged at the top ends of the piston rods (82). The piston rod connecting plates (83) are used to connect with the upper limit plate unit (5).

7. The tension control mechanism of a signal cable twisting device according to claim 1, characterized in that, The upper limit plate unit (5) includes an upper limit plate (51). A single-rod bearing limit plate (52) is mounted on one side surface of the upper limit plate (51) away from the tension pulley (05). Both ends of the upper limit plate (51) are used for assembling and connecting with sliding mounting blocks (06) on the two sides of the first guide rails (12). An electric cylinder connecting plate (512) is arranged in the middle of the upper limit plate (51). The electric cylinder connecting plate (512) is used for assembling and connecting with the piston rod connecting plate (83). Single-rod bearing limit plate mounting grooves (511) for mounting the single-rod bearing limit plate (52) are symmetrically arranged on one side surface of the upper limit plate (51) away from the tension pulley (05). A single-rod bearing limit sliding groove (521) is transversely formed through the single-rod bearing limit plate (52). The single-rod bearing limit sliding groove (521) is used for the transverse sliding of the single-rod bearing (431). Upper limit plate mounting blocks (522) are symmetrically arranged at both ends of the plate body of the single-rod bearing limit plate (52). The upper limit plate mounting blocks (522) are used for mounting to the single-rod bearing limit plate mounting grooves (511).

8. The tension control mechanism of a signal cable twisting device according to claim 1, characterized in that, The cable anti - detachment mechanism (6) includes a sliding frame (61). The sliding frame (61) is fixed on the upper surface of a sliding mounting block (06) on the first guide rail (12). The sliding frame (61) includes sliding rods (611) symmetrically arranged up and down. An anti - detachment frame (62) is slidably fitted on the sliding rods (611). The anti - detachment frame (62) includes a sliding connection frame (622). The bottom plate of the sliding connection frame (622) is slidably fitted on the sliding rods (611). A cable anti - detachment plate (623) is fixedly connected to the top of the sliding connection frame (622). A limiting convex block (621) is fixedly connected to one side of the bottom plate of the sliding connection frame (622). The limiting convex block (621) is in contact with the anti - detachment mechanism limiting surface (131). Second springs (63) are sleeved on the sliding rods (611). One end of each second spring (63) abuts against the surface of the plate of the sliding frame (61) close to the tensioning wheel (05), and the other end abuts against the surface of the bottom plate of the sliding connection frame (622). A plurality of anti - detachment limiting rods (6231) are uniformly arranged on the surface of the cable anti - detachment plate (623) facing the tensioning wheel (05). The anti - detachment limiting rods (6231) are semi - circular in shape and are used to block above the tensioning wheel (05).

9. The tension control mechanism of a signal cable twisting device according to claim 4, characterized in that, Limiting abutting plates (92) are fixedly connected to both sides of the plate body of the lower limiting plate (9). The limiting abutting plates (92) are used to be abutted by the limiting top plate (341). A lower roller sliding surface (91) is arranged on the upper surface of the lower limiting plate (9). The lower roller sliding surface (91) is used for the support rollers (43) at the bottoms of the first support connecting rod (41) and the second support connecting rod (42) to slide. The lower limiting plate (9) is installed on the sliding mounting blocks (06) located on both sides at the second guide rail (2).

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