Centering adjusting guide wheel set for sheath production

Abstract

The invention 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] The present invention relates to the technical field of general cable and submarine cable production, and specifically refers to a centering adjustment guide wheel set used in sheath production. Background Art

[0002] The sheath is a key process in the production of general cables and submarine cables, affecting the electrical performance, mechanical performance, and environmental performance of the finished products. Among them, the wall thickness of the sheath is a key factor that needs to be controlled during the production process of the sheath, mainly affecting the performance of the finished product such as DC withstand voltage and insulation resistance. To ensure that the performance meets the requirements, the requirements for the sheath wall thickness are: high wall thickness uniformity, that is, high concentricity; at the same time, the concentricity of the entire section is required to be stable.

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

[0004] The conventional method for adjusting eccentricity is to adjust the eccentricity adjustment screw located at the head. This method requires sampling and adjustment at the same time, resulting in a large waste of manpower, material resources, and time. The applicant has tried to use an integrated non-adjustable mold to avoid the losses during the debugging process, but the effect has not reached the expected level. The main reason is the misalignment of the entire line caused by equipment aging and ground settlement.

[0005] To cooperate with the use of an integrated non-adjustable mold and adjust the alignment of the entire line, the applicant's existing device has a guide wheel set to guide the cable, but the current guide wheel set has the following deficiencies in actual use:

[0006] 1. The single-sided guide wheel is fixed, and the cable core is limited by moving one side of the guide wheel, and the limit control effect is limited;

[0007] 2. It is difficult to adjust the position of the guide wheel. It is difficult to determine whether the positions of the guide wheels in the same direction are consistent, affecting the stability of the cable core during operation;

[0008] 3. The size of the guide wheel can only adapt to a certain outer diameter of the cable core, and the application range is small;

[0009] 4. It is troublesome to use. Before production, the guide wheel set needs to be centered with the entire production line, and the centering effect cannot be judged;

[0010] 5. When materials such as water-blocking tapes are wrapped around the cable core, impurities are easily generated by friction and are accumulated and carried into the head, which will cause the sheath to bulge or block the mold. Summary of the Invention

[0011] (1) Technical Problem

[0012] The present invention aims to at least solve the problems in the prior art that it is not easy to adjust the eccentricity of the cable, the adjustment effect of the conventional centering adjustment guide wheel is limited, and the application range is small.

[0013] (2) Technical content

[0014] This solution provides a centering and adjusting guide wheel set for sheath production, which is achieved by the following specific technical means:

[0015] It includes two groups of guide wheel devices, a gas blowing device, and a positioning device that are distributed in sequence from front to back. The cable core passes through the two groups of guide wheel devices in sequence, then passes through the gas blowing device, and exits from the positioning device;

[0016] The two groups of guide wheel devices are respectively a horizontally placed guide wheel device and a vertically placed guide wheel device. The guide wheel device includes a wheel seat and two groups of guide wheels installed on the wheel seat.

[0017] Both groups of guide wheels are connected to the tension adjustment component arranged in the wheel seat. The clamping tension of the two groups of guide wheels on the cable core passing between the two groups of guide wheels is adjusted through the tension adjustment component to ensure the stability of the cable core during operation;

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

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

[0020] Wheel columns are fixed at both ends of the V-shaped shallow groove guide wheel, and there are external threads on the wheel columns. At the same time, the threaded groove at the center of the small end of the conical cap is threadedly connected to the wheel column at one end of the V-shaped shallow groove guide wheel, and a threaded column is also fixed at the center of the large end of the conical cap;

[0021] Multiple groups of conical caps located at one end of the V-shaped shallow groove guide wheel are connected in sequence. The taper of multiple groups of conical caps located at one end of the V-shaped shallow groove guide wheel is equal and the outer diameter increases sequentially from inside to 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-groove of the formed V-groove guide wheel gradually increases, and the V-groove wall is smooth and flat;

[0022] The threaded column of the outermost group of conical caps serves as a wheel shaft and is fixedly connected to the mounting shaft rotatably installed on the wheel seat.

[0023] Preferred technical solution 2: The wheel seat includes a bottom box, two groups of mounting seats slidably installed in the bottom box, and the wheel shaft of each group of wheel seats is fixedly connected to the mounting shaft rotatably arranged on the corresponding group of mounting seats;

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

[0025] Preferred technical solution 3: The gas blowing device includes a fixed bracket, an installation hole is provided on the fixed bracket, and an annular air knife is installed around the installation hole on the fixed bracket.

[0026] Preferred Technical Solution 4: The positioning device includes an interface frame. A positioning port is provided on the interface frame. An interface pipe communicating with the positioning port is fixed to the rear side of the interface frame, and the interface pipe is connected to the extrusion head.

[0027] Preferred Technical Solution 5: A laser distance sensor is installed on the interface frame. The detection end of the laser distance sensor extends into the positioning port to detect the position of the cable core.

[0028] Preferred Technical Solution 6: A tension sensor is provided on the mounting shaft.

[0029] (III) Technical Effects

[0030] Adopting the above structure enables this solution to have the following beneficial effects:

[0031] 1. Reduce waste: Through this patent, the difficulty of sheath debugging can be reduced, the material, time, and labor losses caused during the process can be reduced, and at the same time, the production efficiency can be improved and the on-site management level can be enhanced;

[0032] 2. Improve quality: Through this patent, the stability of the cable core during operation can be improved, and further, the stability of the outer diameter and concentricity during the sheath production process can be enhanced, improving the quality of the sheath product;

[0033] 3. Eliminate risks: Through this patent, impurities and moisture contaminated on the cable core can be cleaned to avoid the phenomena of bulging and die blockage when being brought into the extrusion head during production. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0035] Figure 1 is the overall structural schematic diagram of this solution;

[0036] Figure 2 is the top view of this solution;

[0037] Figure 3 is the structural schematic diagram of the guide wheel of this solution;

[0038] Figure 4 is the cross-sectional view of the guide wheel of this solution;

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

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

[0041] Figure 7 is the front view of the wheel seat of this solution.

[0042] Among them, 1. Guide wheel device, 11. Wheel seat, 111. Bottom box, 112. Mounting seat, 12. Guide wheel, 121. V-shaped shallow groove guide wheel, 1211. Wheel column, 122. Conical cap, 1221. Thread groove, 1222. Thread post, 13. Tension adjusting assembly, 131. Adjusting plate, 132. Spring, 133. Double-headed screw rod, 134. Knob, 2. Air blowing device, 21. Fixed bracket, 211. Mounting hole, 22. Annular air knife, 3. Positioning device, 31. Interface bracket, 311. Positioning port, 32. Interface pipe. Specific implementation manner

[0043] 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; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0044] Please refer to Figure 1 - Figure 2 , Figure 5 - Figure 6 , the centering adjustment guide wheel group used in the production of the sheath includes two groups of guide wheel devices 1, an air blowing device 2, and a positioning device 3 that are distributed in sequence from front to back. The cable core passes through the two groups of guide wheel devices 1 in sequence, then passes through the air blowing device 2, and exits from the positioning device 3;

[0045] The guide wheel device 1 is used to convey the cable core under tension;

[0046] The air blowing device 2 is used to blow off the impurities generated on the cable core;

[0047] The positioning device 3 is connected to the extrusion head;

[0048] The two groups of guide wheel devices 1 are respectively a horizontal guide wheel device and a vertical guide wheel device. The guide wheel device 1 includes a wheel seat 11 and two groups of guide wheels 12 mounted on the wheel seat 11. Among them: the wheel seat 11 in the horizontal guide wheel device is placed horizontally, and the two groups of guide wheels 12 on it are symmetrically and rotatably mounted on the left and right sides of the upper wheel seat 11; the wheel seat 11 in the vertical guide wheel device is placed vertically, and the two groups of guide wheels 12 on it are symmetrically and rotatably mounted on the upper and lower sides of the wheel seat 11;

[0049] Both groups of guide wheels 12 are connected to the tension adjusting assembly 13 provided in the wheel seat 11. The clamping tension of the cable core passing between the two groups of guide wheels 12 is adjusted through the tension adjusting assembly 13 to ensure the stability of the cable core during operation; the guide wheel 12 is a V-shaped groove guide wheel, and the depth of the V-shaped groove is adjustable, so that the depth can be adjusted accordingly 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 an installation hole 211 is provided, and an annular air knife 22 is installed around the installation hole 211 on the fixed bracket 21. The annular air knife 22 can be used by connecting it to 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 can be adjusted for installation, such as adjusting the installation position, so that the position of the annular air knife 22 can be adjusted according to the usage conditions or it can be removed;

[0051] The positioning device 3 includes an interface bracket 31, on which a positioning port 311 is provided. A connecting pipe 32 communicating with the positioning port 311 is fixed at the rear side of the interface bracket 31. The connecting pipe 32 is connected to the extrusion head. The middle section of the connecting pipe 32 is made of tempered glass to isolate the high temperature from the extruder;

[0052] The center of the positioning port 311, the center of the installation hole 211, the midpoint of the connection line of the two sets of guide wheels 12 of the horizontal guide wheel 12 device, and the midpoint of the connection line of 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 through between the two sets of guide wheels 12 of the horizontal guide wheel 12 device, between the two sets of guide wheels 12 of the vertical guide wheel 12 device, the installation hole 211 and the positioning port 311 in sequence and enters the extruder, which simplifies the process of aligning the whole line before each installation of the guide wheel 12 set.

[0054] Please refer to Figure 1 - Figure 4 , the centering and adjusting guide wheel set used for sheath production. The guide wheel 12 is of a split structure. Specifically, the guide wheel 12 is composed of a V-shaped shallow groove guide wheel 121 and multiple groups of tapered caps 122 spliced on both sides of the V-shaped shallow groove guide wheel 121;

[0055] At both ends of the V-shaped shallow groove guide wheel 121, wheel columns 1211 are fixed, and the wheel columns 1211 have external threads. At the same time, the thread groove 1221 at the center of the small end of the tapered cap 122 is threadedly connected to the wheel column 1211 at one end of the V-shaped shallow groove guide wheel 121. A threaded column 1222 is also fixed at the center of the large end of the tapered cap 122; multiple groups of tapered caps 122 located at one end of the V-shaped shallow groove guide wheel 12 are sleeved in sequence, and the threaded column 1222 on the inner set of tapered caps 122 is adapted and threadedly connected to the thread groove 1221 on the inner side of the adjacent outer set of tapered caps 122; and the taper of multiple groups of tapered caps 122 located at one end of the V-shaped shallow groove guide wheel 12 is equal and the outer diameters increase in sequence from the inside to the outside. As the number of spliced tapered caps 122 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 V-shaped groove wall is smooth and flat;

[0056] During assembly, it is necessary to control the depth of the V-groove to be not 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 axle of the guide wheel 12 and is fixedly connected to the mounting shaft (not shown in the figure) rotatably mounted on the wheel seat 11.

[0057] Please refer to Figure 7 , for the centering adjustment guide wheel set used in sheath production, the wheel seat 11 includes a bottom box 111, two sets of mounting seats 112 slidably mounted in the bottom box 111, and the axle of each set of wheel seats 11 is fixedly connected to the mounting shaft rotatably provided 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 achieve the adjustment of the tension between the two sets of guide wheels 12; the tension adjustment assembly 13 includes a double-headed screw rod 133 rotatably mounted in the bottom box 111, and holes for the double-headed screw rod 133 to pass through are provided on the two sets of mounting seats 112, and the diameter of the holes is greater than the diameter of the double-headed screw rod 133 to avoid contact between the two. Adjustment plates 131 slide at both ends in the bottom 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 threadedly connected to both ends of the double-headed screw rod 133 through threaded holes. One end of the double-headed screw rod 133 extends out of the bottom box 111 and is provided with a knob 134. Springs 132 with the same specifications are connected between the adjustment plates 131 and the adjacent set of mounting seats 112;

[0059] Due to the limiting effect of the base on the moving directions of the mounting seat 112 and the adjustment plate 131, when the knob 134 is rotated to drive the double-headed screw rod 133 to rotate, the two sets of adjustment plates 131 will be driven to approach or move away synchronously. When the two sets of adjustment plates 131 approach each other, the springs 132 will be compressed, the distance between the two sets of guide wheels 12 will be reduced, and the tension will be increased; by rotating the knob 134 to control the position and tightness of the guide wheel 12, the adjustment is simpler and the limit on the cable core is more effective.

[0060] Please refer to Figure 1 , for the centering adjustment guide wheel set used in sheath production, a laser distance sensor (not shown in the figure) is installed on the interface frame 31, and the detection end of the laser distance sensor extends into the positioning port 311 to detect the position of the cable core; there are at least four groups of laser distance 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 judge the centering degree of the cable core and the extrusion head.

[0061] Please refer to Figure 1, in the centering and adjusting guide wheel set used in sheath production, a tension sensor (not shown in the figure) is provided on the mounting shaft. This mounting method can most directly measure the tension borne by the guide wheel 12 because the mounting shaft is a key component for transmitting force, and the tension condition of the guide wheel 12 can be accurately reflected by measuring the stress change on the mounting shaft;

[0062] The tension sensor can monitor the tension of the cable core, and each group of guide wheels 12 can be adjusted according to the tension state to ensure the stability during the operation of the cable core.

[0063] It should be noted that the specific models of the annular air knife 22, laser ranging sensor, and tension sensor mentioned in this embodiment, as well as their supporting power supplies and control switches, can also be provided by the manufacturer. The circuits, electronic components, and modules involved are all prior arts, and those skilled in the art can fully implement them without further elaboration.

[0064] Please refer to Figure 1 - Figure 2 , in the centering and adjusting guide wheel set used in sheath production, multiple groups of horizontal guide wheel devices and vertical guide wheel devices are arranged side by side from front to back.

[0065] The parts not disclosed in the present invention are all prior arts, and their specific structures and working principles will not be elaborated further.

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

Claims

1. A centering and adjusting guide wheel set used in the production of a sheath, characterized in that: It includes two sets of guide wheel devices (1), an air blowing device (2), and a positioning device (3) that are distributed in sequence from front to back. The cable core passes through the two sets of guide wheel devices (1) in sequence, then passes through the air blowing device (2), and exits from the positioning device (3). The two sets of the guide wheel devices (1) are respectively a horizontally placed guide wheel device and a vertically placed guide wheel device. The guide wheel device (1) includes a wheel seat (11) and two sets of guide wheels (12) installed on the wheel seat (11). The two sets of the guide wheels (12) are both connected to a tension adjustment component (13) arranged 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 set for sheath production according to claim 1, characterized in that: The guide wheel (12) is composed of a V-shaped shallow groove guide wheel (122) and multiple sets of tapered caps (122) spliced on both sides of the V-shaped shallow groove guide wheel (122). Wheel columns (1211) are fixed at both ends of the V-shaped shallow groove guide wheel (122), and the wheel columns (1211) have external threads. At the same time, a threaded groove (1221) at the center of the small end of the tapered cap (122) is threadedly connected to the wheel column (1211) at one end of the V-shaped shallow groove guide wheel (122). A threaded post (1222) is also fixed at the center of the large end of the tapered cap (122). The multiple sets of tapered caps (122) located at one end of the V-shaped shallow groove guide wheel (122) are connected in sequence, and the threaded post (1222) on the inner set of tapered caps (122) is adapted and threadedly connected to the threaded groove (1221) on the inner side of the adjacent outer set of tapered caps (122). And the taper of the multiple sets of tapered caps (122) located at one end of the V-shaped shallow groove guide wheel (122) is equal, and the outer diameters increase in sequence from inside to outside. The threaded post (1222) of the outermost set of tapered caps (122) serves as a wheel axle and is fixedly connected to the mounting axle rotatably installed on the wheel seat (11).

3. The centering adjustment guide wheel set for use in the production of a sheath according to claim 2, characterized in that: The wheel seat (11) includes a bottom box (111), two sets of mounting seats (112) slidably installed in the bottom box (111). The wheel axle of each set of the wheel seat (11) is fixedly connected to the mounting axle rotatably arranged 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 achieve the adjustment of the tension between the two sets of guide wheels (12).

4. A centering adjustment guide wheel set for use in the production of a sheath, as claimed in claim 3, wherein: The tension adjustment component (13) includes a double-headed lead screw (133) rotatably installed in the bottom box (111). Through holes for the double-headed lead screw (133) to pass through are opened on the two sets of mounting seats (112). Adjusting plates (131) slide at both ends in the bottom box (111). The two sets of the adjusting plates (131) are located outside the two sets of mounting seats (112), and the two sets of the adjusting plates (131) are threadedly connected to both ends of the double-headed lead screw (133) through threaded holes. Springs (132) are connected between the adjusting plates (131) and the adjacent set of mounting seats (112).

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

6. The centering adjustment guide wheel set for sheath production according to claim 5, characterized in that: The positioning device (3) includes an interface frame (31). A positioning port (311) is formed on the interface frame (31). An interface pipe (32) communicating with the positioning port (311) is fixed to the rear side of the interface frame (31), and the interface pipe (32) is connected to the extrusion head.

7. The centering adjustment guide wheel set for 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 connection line of the two sets of guide wheels (12) of the horizontal guide wheel (12) device, and the midpoint of the connection line of the two sets of guide wheels (12) of the vertical guide wheel (12) device are located on the same straight line.

8. The centering adjustment guide wheel set used in the production of the sheath according to claim 7, characterized in that: A laser distance sensor is installed on the interface frame (31), and there are at least four groups of laser distance sensors around the positioning port (311).

9. The centering adjustment guide wheel set for 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 set for sheath production according to claim 4, characterized in that: A tension sensor is arranged on the mounting shaft.

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