Centering adjusting guide wheel set for sheath production

Abstract

The utility model relates to the technical field of common cable and submarine cable production, in particular to a centering adjusting guide wheel group for sheath production, which comprises two groups of guide wheel devices, an air blowing device and a positioning device which are sequentially distributed from front to back, the guide wheel device comprises a wheel seat and two groups of guide wheels mounted on the wheel seat, the two groups of guide wheels are connected with a tension adjusting assembly arranged in the wheel seat, and the tension adjusting assembly is used for adjusting the clamping tension of the two groups of guide wheels to a cable core penetrating through the two groups of guide wheels, so that the stability of the cable core in the running process is ensured; the guide wheel is a V-shaped groove guide wheel, and the depth of the V-shaped groove is adjustable, so that the corresponding depth can be adjusted according to the size of the cable core, and the clamping effect is kept. And the centering condition of the whole wire is improved, so that the difficulty in product debugging is reduced, and meanwhile, the quality of a finished sheath and the production stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of general cable and submarine cable production technology, specifically to a centering adjustment guide wheel assembly used in sheath production. Background Technology

[0002] The sheath is a crucial process in the production of conventional and submarine cables, affecting the electrical, mechanical, and environmental performance of the finished product. Among these factors, the sheath wall thickness is a key element that needs to be controlled during production, primarily impacting properties such as DC withstand voltage and insulation resistance. To ensure performance requirements are met, the sheath wall thickness must meet the following requirements: high uniformity, i.e., high concentricity; and stable concentricity throughout the entire section.

[0003] The main problems currently are: the eccentricity is not easy to adjust, resulting in a large loss of manpower, material resources and time; some cable cores are unstable in operation, resulting in unstable concentricity and changes.

[0004] The conventional method for adjusting eccentricity is to adjust the eccentricity adjustment screw located at the machine head. This method requires sampling and adjustment simultaneously, resulting in significant waste of manpower, resources, and time. The applicant attempted to use an integrated, non-adjustable mold to avoid losses during the debugging process, but the results did not meet expectations. The main reasons were equipment aging and misalignment of the entire production line caused by ground subsidence.

[0005] To facilitate the use of the integrated, adjustment-free mold and adjust the alignment of the entire production line, the applicant's existing device includes a guide wheel assembly to guide the cable. However, the current guide wheel assembly has the following shortcomings in actual use:

[0006] 1. With one side of the guide wheel fixed, the cable core is limited by moving one side of the guide wheel, which has a limited limiting control effect;

[0007] 2. Difficulty in adjusting the position of the guide wheels; it is hard to determine whether the positions of guide wheels in the same direction are consistent, which affects the stability of the cable core during operation.

[0008] 3. The guide roller size can only be adapted to cable cores with a certain outer diameter, limiting its application range;

[0009] 4. It is cumbersome to use. The pre-production guide roller assembly needs to be aligned with the entire production line, and the alignment effect cannot be judged.

[0010] 5. When the cable core is wrapped with materials such as water-blocking tape, friction can easily generate impurities, which can accumulate and be carried into the machine head, causing the sheath to bulge or block the mold. Utility Model Content

[0011] (a) Technical issues

[0012] The present invention aims to at least solve the problems existing in the prior art, such as the difficulty in adjusting cable eccentricity, the limited adjustment effect of conventional centering adjustment guide wheels, and the small scope of application.

[0013] (II) Technical Content

[0014] This solution provides a centering adjustment guide wheel assembly for use in sheath production, achieved through the following specific technical means:

[0015] It includes two sets of guide wheel devices, an air blowing device, and a positioning device arranged from front to back. The cable core passes through the two sets of guide wheel devices in sequence, then passes through the air blowing device and exits from the positioning device.

[0016] The two sets of guide wheel devices are a horizontal guide wheel device and a vertical guide wheel device, each guide wheel device including a wheel seat and two sets of guide wheels mounted on the wheel seat.

[0017] Both sets of guide wheels are connected to a tension adjustment component in the wheel seat. The tension adjustment component adjusts the clamping tension of the two sets of guide wheels on the cable core passing between the two sets of guide wheels, ensuring the stability of the cable core during operation.

[0018] The guide wheel is a V-groove guide wheel, and the guide wheel has a split structure, which makes the depth of the V-groove adjustable.

[0019] Preferred technical solution 1: The guide wheel is composed of a V-shaped shallow groove guide wheel and multiple sets of conical caps spliced ​​on both sides of the V-shaped shallow groove guide wheel;

[0020] Both ends of the V-shaped shallow groove guide wheel are fixed with wheel posts, and the wheel posts have external threads. At the same time, the threaded groove at the center of the small end of the conical cap is threadedly connected to the wheel post at one end of the V-shaped shallow groove guide wheel, and a threaded post is also fixed at the center of the large end of the conical cap.

[0021] Multiple sets of conical caps located at one end of the V-shaped shallow groove guide wheel are connected in sequence. The taper of the multiple sets of conical caps located at one end of the V-shaped shallow groove guide wheel is equal and the outer diameter increases from the inside to the outside. As the number of conical caps spliced ​​at both ends of the V-shaped shallow groove guide wheel increases, the depth of the V-shaped groove of the formed V-shaped groove guide wheel gradually increases, and the wall of the V-shaped groove is smooth and flat.

[0022] The threaded post of the outermost set of conical caps is fixedly connected to the mounting shaft that is rotatably mounted on the wheel seat as the wheel axle.

[0023] Preferred technical solution 2: The wheel seat includes a base box and two sets of mounting seats that are slidably installed in the base box. The wheel axle of each set of wheel seats is fixedly connected to the mounting shaft that is rotatably installed on the corresponding set of mounting seats.

[0024] The tension adjustment component is used to adjust the distance between the two sets of mounting seats in order to adjust the tension between the two sets of guide wheels.

[0025] Preferred technical solution 3: The air blowing device includes a fixed bracket, on which mounting holes are provided, and an annular air knife is mounted around the mounting holes on the fixed bracket.

[0026] Preferred technical solution four: The positioning device includes an interface frame with a positioning port. An interface pipe communicating with the positioning port is fixed on the rear side of the interface frame. The middle section of the interface pipe is a heat insulation section, and the interface pipe is connected to the extruder head.

[0027] Preferred technical solution five: A laser ranging sensor is installed on the interface frame, and the detection end of the laser ranging sensor extends into the positioning port to detect the position of the cable core.

[0028] Preferred technical solution six: A tension sensor is provided on the mounting shaft.

[0029] (III) Technical Effects

[0030] The above structure gives this solution the following advantages:

[0031] 1. Reduce waste: This patent can reduce the difficulty of sheath adjustment, reduce the loss of materials, time and manpower in the process, and improve production efficiency and enhance the management level of the site;

[0032] 2. Quality Improvement: This patent can improve the stability of the cable core during operation, thereby improving the stability of the outer diameter and concentricity during the sheath production process, and improving the quality of the sheath product.

[0033] 3. Risk elimination: This patent can clean impurities and moisture adhering to the cable core, preventing them from being carried into the extruder head during production and causing bulging and mold blockage. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0036] Figure 2 This is a top view of the plan;

[0037] Figure 3 This is a schematic diagram of the guide wheel structure in this design;

[0038] Figure 4 This is a sectional view of the guide wheel in this design;

[0039] Figure 5 This is the front view of the air blowing device in this solution;

[0040] Figure 6 This is a side view of the positioning device in this solution;

[0041] Figure 7This is the front view of the wheel seat in this design.

[0042] Among them, 1. Guide wheel device, 11. Wheel seat, 111. Base box, 112. Mounting seat, 12. Guide wheel, 121. V-shaped shallow groove guide wheel, 1211. Wheel column, 122. Conical cap, 1221. Threaded groove, 1222. Threaded column, 13. Tension adjustment component, 131. Adjustment plate, 132. Spring, 133. Double-ended lead screw, 134. Knob, 2. Air blowing device, 21. Fixed bracket, 211. Mounting hole, 22. Annular air knife, 3. Positioning device, 31. Interface frame, 311. Positioning port, 32. Interface tube. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0044] Please see Figures 1-2 , Figures 5-6 The centering adjustment guide wheel assembly used in sheath production includes two sets of guide wheel devices 1, an air blowing device 2, and a positioning device 3 distributed from front to back. The cable core passes through the two sets of guide wheel devices 1 in sequence, then through the air blowing device 2 and out through the positioning device 3.

[0045] Guide wheel device 1 is used to transport the cable core under tension.

[0046] Air blowing device 2 is used to blow away impurities generated on the cable core;

[0047] Positioning device 3 is connected to the extruder head;

[0048] The two sets of guide wheel devices 1 are a horizontal guide wheel device and a vertical guide wheel device, respectively. The guide wheel device 1 includes a wheel seat 11 and two sets of guide wheels 12 mounted on the wheel seat 11. In the horizontal guide wheel device, the wheel seat 11 is placed horizontally and the two sets of guide wheels 12 on it are symmetrically rotated and installed on the left and right sides of the upper wheel seat 11. In the vertical guide wheel device, the wheel seat 11 is placed vertically and the two sets of guide wheels 12 on it are symmetrically rotated and installed on the upper and lower sides of the wheel seat 11.

[0049] Both sets of guide wheels 12 are connected to the tension adjustment component 13 provided in the wheel seat 11. The tension adjustment component 13 adjusts the clamping tension of the two sets of guide wheels 12 on the cable core passing between the two sets of guide wheels 12, ensuring the stability of the cable core during operation. The guide wheels 12 are V-groove guide wheels, and the depth of the V-groove is adjustable, so the depth can be adjusted according to the size of the cable core to maintain the clamping effect.

[0050] The air blowing device 2 includes a fixed bracket 21, on which a mounting hole 211 is provided, and an annular air knife 22 is installed around the mounting hole 211 on the fixed bracket 21. The annular air knife 22 can be used by connecting compressed air, and it has a good effect on removing impurities and moisture attached to the cable core. The position of the annular air knife 22 on the fixed bracket 21 is adjustable. By adjusting the installation position, the position of the annular air knife 22 can be adjusted or removed according to the usage conditions.

[0051] The positioning device 3 includes an interface frame 31, on which a positioning port 311 is provided. An interface pipe 32 communicating with the positioning port 311 is fixed on the rear side of the interface frame 31. The interface pipe 32 is connected to the extruder head. The middle section of the interface pipe 32 is a heat insulation section. Furthermore, the middle section of the interface pipe 32 is made of tempered glass to insulate against the high temperature from the extruder.

[0052] The center of positioning port 311, the center of mounting hole 211, the midpoint of the line connecting the two sets of guide wheels 12 of the horizontal guide wheel 12 device, and the midpoint of the line connecting the two sets of guide wheels 12 of the vertical guide wheel 12 device are located on the same straight line.

[0053] The cable core passes sequentially between the two sets of guide wheels 12 on the horizontal guide wheel 12 device, between the two sets of guide wheels 12 on the vertical guide wheel 12 device, through the mounting hole 211 and the positioning port 311 before entering the extruder, which simplifies the process of centering the entire line before each installation of the guide wheel 12 group.

[0054] Please see Figures 1-4 The centering adjustment guide wheel assembly used in the production of the sheath has a split structure for the guide wheel 12. Specifically, the guide wheel 12 consists of a V-shaped shallow groove guide wheel 121 and multiple sets of conical caps 122 spliced ​​on both sides of the V-shaped shallow groove guide wheel 121.

[0055] Both ends of the V-shaped shallow groove guide wheel 121 are fixed with wheel posts 1211, and the wheel posts 1211 have external threads. At the same time, the threaded groove 1221 at the center of the small end of the conical cap 122 is threadedly connected to the wheel post 1211 at one end of the V-shaped shallow groove guide wheel 121. The center of the large end of the conical cap 122 is also fixed with a threaded post 1222. Multiple sets of conical caps 122 located at one end of the V-shaped shallow groove guide wheel 121 are sequentially sleeved, and the threaded post 1222 on the inner set of conical caps 122 is adapted to and threadedly connected to the inner threaded groove 1221 of the adjacent set of conical caps 122 on the outer side. The multiple sets of conical caps 122 located at one end of the V-shaped shallow groove guide wheel 12 have equal tapers and their outer diameters increase sequentially from the inside to the outside. As the number of conical caps 122 spliced ​​at both ends of the V-shaped shallow groove guide wheel 12 increases, the depth of the V-shaped groove of the formed V-shaped groove guide wheel 12 gradually increases, and the wall of the V-shaped groove is smooth and flat.

[0056] During assembly, the depth of the V-groove needs to be controlled to be no greater than the radius of the cable core, so that the guide wheel 12 can maintain stable and sufficient contact with the cable core. During installation, the stud 1222 of the outermost set of conical caps 122 serves as the wheel axle of the guide wheel 12 and is fixedly connected to the mounting shaft (not shown in the figure) that is rotatably mounted on the wheel seat 11.

[0057] Please see Figure 7 The centering adjustment guide wheel assembly used in the production of the sheath includes a base box 111 and two sets of mounting seats 112 that are slidably installed in the base box 111. The wheel axle of each set of wheel seats 11 is fixedly connected to the mounting shaft rotatably installed on the corresponding set of mounting seats 112.

[0058] The tension adjustment assembly 13 is used to adjust the distance between the two sets of mounting seats 112 to adjust the tension between the two sets of guide wheels 12. The tension adjustment assembly 13 includes a double-ended lead screw 133 rotatably mounted in the base box 111. The two sets of mounting seats 112 are provided with holes through which the double-ended lead screw 133 passes. The diameter of the holes is larger than the diameter of the double-ended lead screw 133 to prevent them from contacting each other. Adjustment plates 131 slide at both ends in the base box 111. The two sets of adjustment plates 131 are located outside the two sets of mounting seats 112. The two sets of adjustment plates 131 are threaded to both ends of the double-ended lead screw 133 through threaded holes. One end of the double-ended lead screw 133 extends out of the base box 111 and is equipped with a knob 134. A spring 132 of the same specification is connected between the adjustment plate 131 and the adjacent set of mounting seats 112.

[0059] Because the base limits the movement direction of the mounting base 112 and the adjusting plate 131, when the knob 134 rotates and drives the double-ended lead screw 133 to rotate, it will cause the two sets of adjusting plates 131 to move closer or further away synchronously. When the two sets of adjusting plates 131 move closer to each other, they will compress the spring 132, reduce the distance between the two sets of guide wheels 12, and increase the tension. By rotating the knob 134, the position and tension of the guide wheels 12 can be controlled, making the adjustment simpler and the limiting of the cable core more effective.

[0060] Please see Figure 1 The centering adjustment guide wheel assembly used in sheath production has a laser range sensor (not shown in the figure) installed on the interface frame 31. The detection end of the laser range sensor extends into the positioning port 311 to detect the position of the cable core. There are at least four sets of laser range sensors around the positioning port 311, which can measure the distance from the cable core to the four walls of the positioning port 311 and indirectly determine the degree of centering between the cable core and the extruder head.

[0061] Please see Figure 1The centering adjustment guide wheel assembly used in the production of the sheath has a tension sensor (not shown in the figure) installed on the mounting shaft. This installation method can directly measure the tension borne by the guide wheel 12, because the mounting shaft is a key component for transmitting force. By measuring the stress change on the mounting shaft, the tension of the guide wheel 12 can be accurately reflected.

[0062] Tension sensors can monitor the tension on the cable core, and each set of guide wheels 12 can be adjusted according to the tension status to ensure the stability of the cable core during operation.

[0063] It is worth noting that the specific models of the annular air knife 22, laser rangefinder, and tension sensor mentioned in this embodiment, as well as their matching power supply and control switch, can also be provided by the manufacturer. The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and there is no need to elaborate further.

[0064] Please see Figures 1-2 The centering and adjusting guide wheel assembly used in the production of the sheath consists of multiple sets of horizontal and vertical guide wheel devices arranged side by side from front to back.

[0065] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0066] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centering adjustment guide wheel assembly used in sheath production, characterized in that: It includes two sets of guide wheel devices (1), an air blowing device (2) and a positioning device (3) arranged from front to back. The cable core passes through the two sets of guide wheel devices (1) and then through the air blowing device (2) before exiting through the positioning device (3). The two sets of guide wheel devices (1) are a horizontal guide wheel device and a vertical guide wheel device, respectively. The guide wheel device (1) includes a wheel seat (11) and two sets of guide wheels (12) installed on the wheel seat (11). Both sets of guide wheels (12) are connected to the tension adjustment component (13) provided in the wheel seat (11). The guide wheel (12) is a V-groove guide wheel, and the depth of the V-groove is adjustable.

2. The centering adjustment guide wheel assembly used in sheath production according to claim 1, characterized in that: The guide wheel (12) consists of a V-shaped shallow groove guide wheel (121) and multiple sets of conical caps (122) spliced ​​on both sides of the V-shaped shallow groove guide wheel (121); Both ends of the V-shaped shallow groove guide wheel (121) are fixed with wheel posts (1211), and the wheel posts (1211) have external threads. At the same time, the threaded groove (1221) at the center of the small end of the conical cap (122) is threadedly connected to the wheel post (1211) at one end of the V-shaped shallow groove guide wheel (121). The center of the large end of the conical cap (122) is also fixed with a threaded post (1222). Multiple sets of conical caps (122) located at one end of the V-shaped shallow groove guide wheel (121) are connected in sequence, and the threaded post (1222) on the inner set of conical caps (122) is adapted to and threadedly connected to the inner threaded groove (1221) of the adjacent set of conical caps (122) on the outer side; and the multiple sets of conical caps (122) located at one end of the V-shaped shallow groove guide wheel (121) have the same taper and the outer diameter increases sequentially from the inside to the outside; The threaded post (1222) of the outermost set of conical caps (122) is fixedly connected to the mounting shaft that is rotatably mounted on the wheel seat (11) as the wheel axle.

3. The centering adjustment guide wheel assembly used in sheath production according to claim 2, characterized in that: The wheel seat (11) includes a base box (111) and two sets of mounting seats (112) that are slidably installed in the base box (111). The wheel axle of each set of wheel seats (11) is fixedly connected to the mounting shaft rotatably installed on the corresponding set of mounting seats (112). The tension adjustment component (13) is used to adjust the distance between the two sets of mounting seats (112) to adjust the tension between the two sets of guide wheels (12).

4. The centering adjustment guide wheel assembly used in sheath production according to claim 3, characterized in that: The tension adjustment assembly (13) includes a double-ended lead screw (133) rotatably mounted in the base box (111), and two sets of mounting seats (112) are provided with holes for the double-ended lead screw (133) to pass through. Adjustment plates (131) slide at both ends in the base box (111). The two sets of adjustment plates (131) are located outside the two sets of mounting seats (112), and the two sets of adjustment plates (131) are threaded to both ends of the double-ended lead screw (133) through threaded holes. A spring (132) is connected between the adjustment plate (131) and the adjacent set of mounting seats (112).

5. A centering adjustment guide wheel assembly for sheath production according to any one of claims 1-4, characterized in that: The air blowing device (2) includes a fixed bracket (21), a mounting hole (211) is provided on the fixed bracket (21), and an annular air knife (22) is installed on the fixed bracket (21) around the mounting hole (211).

6. The centering adjustment guide wheel assembly used in sheath production according to claim 5, characterized in that: The positioning device (3) includes an interface frame (31), a positioning port (311) is provided on the interface frame (31), and an interface pipe (32) connected to the positioning port (311) is fixed on the rear side of the interface frame (31). The interface pipe (32) is connected to the extruder head.

7. The centering adjustment guide wheel assembly used in sheath production according to claim 6, characterized in that: The center of the positioning port (311), the center of the mounting hole (211), the midpoint of the line connecting the two sets of guide wheels (12) of the horizontal guide wheel (12) device, and the midpoint of the line connecting the two sets of guide wheels (12) of the vertical guide wheel (12) device are all on the same straight line.

8. The centering adjustment guide wheel assembly used in sheath production according to claim 7, characterized in that: The interface frame (31) is equipped with a laser rangefinder, and there are at least four sets of laser rangefinders surrounding the positioning port (311).

9. The centering adjustment guide wheel assembly used in sheath production according to claim 6, characterized in that: The middle section of the interface pipe (32) is a heat insulation section.

10. The centering adjustment guide wheel assembly used in sheath production according to claim 4, characterized in that: A tension sensor is installed on the mounting shaft.

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