Servo control cable and preparation method thereof

Abstract

The invention relates to the technical field of cables, and provides a servo control cable and a preparation method thereof, the servo control cable comprises a plurality of single wire bodies and a rolling frame, the plurality of single wire bodies are arranged in parallel along a first direction, and the width of the servo control cable in the first direction is greater than the width of the servo control cable in a second direction; each single wire body comprises a buffer support, a first wire core and an outer wrapping layer, the buffer support is of a strip-shaped structure, an arc-shaped groove is formed in the side edge, parallel to the first direction, of the buffer support, the first wire core is attached to the arc-shaped groove, and the outer wrapping layer is in a long oval shape and wraps the buffer support and the first wire core; the rolling frames are arranged at two ends of the servo control cable corresponding to the first direction. According to the invention, the buffer bracket is arranged, the width of the control cable in the first direction is greater than the width of the control cable in the second direction, and the rolling frame is arranged on the side edge of the first width, so that when the control cable is extruded, the control cable can roll in a self-adaptive manner, so that the two side edges in the second direction bear extrusion, and the anti-extrusion capability is relatively good.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a servo control cable and a preparation method thereof. Background Art

[0002] Control cables are cables specially used in electrical control systems. They are mainly used to transmit control signals, power signals, and communication between signals. Control cables are widely used in many fields such as industry, construction, communications, and equipment automation. Depending on the different working environments and requirements, the types and designs of control cables will also vary. Due to the importance of the control cable's work, it is necessary to ensure that the control cable has good structural strength to ensure the normal transmission of signals and avoid accidents.

[0003] The utility model patent with the existing authorization announcement number CN221946837U discloses an anti-aging control cable, which includes: a cable body, the cable body includes a cable core, the outer surface of the cable core is fixedly connected with a coating film, the outer surface of the coating film is fixedly connected with an insulating layer, the outer surface of the insulating layer is fixedly connected with an armor layer, the outer surface of the armor layer is fixedly connected with a heat-resistant layer, and the outer surface of the heat-resistant layer is fixedly connected with an anti-aging layer;

[0004] The control cable structure in the above scheme is currently the most widely used structure, that is, the cable core is located on the innermost side, and the outer side is covered with layers of insulating layers, shielding layers, armor layers (armor layers) and other functional layers, which can avoid interference, make the control cable signal transmission stable, and avoid damage to a certain extent; however, the structure of such control cable is too tight, and it has good performance in terms of anti-friction and anti-bending, but poor buffering capacity, and cannot withstand extrusion and impact.

[0005] There is also an invention patent with authorization announcement number CN114420349B, which discloses a high-temperature resistant soft control cable for automobile paint booths, which is provided with a buffer component, and the buffer component is composed of a bundling layer and a trapezoidal boss on its inner side, a bending rod and an arc-shaped guard plate; the invention patent with authorization announcement number CN112017816B discloses a fluoroplastic insulated and sheathed high-temperature resistant shielded control cable, which is provided with a spring shaft connecting a buffer plate for buffering; but in these two schemes, the buffer structure is more complicated, and the cable usually has a longer length. When the bending rod and the arc-shaped guard plate in the first scheme are provided on the inner side thereof, and when the spring shaft and the buffer plate in the second scheme are provided, the integration is not convenient enough and is easy to interfere with the bending application performance of the cable. Summary of the invention

[0006] In view of this, the present invention proposes a servo control cable with good buffering effect and no interference with the bending application performance of the cable and a preparation method thereof, thereby solving the problem that the existing cable buffer structure is not easy to integrate and will interfere with the bending performance of the cable.

[0007] The technical solution of the present invention is achieved in this way:

[0008] In one aspect, the present invention provides a servo control cable, comprising a plurality of single wire bodies and a roller frame, wherein:

[0009] A plurality of single-line bodies are arranged in parallel along a first direction, and a second direction is perpendicular to the first direction, so that a width of the servo control cable in the first direction is greater than a width in the second direction;

[0010] The single wire body includes a buffer support, a first wire core and an outer cladding, the buffer support is in a strip structure, and an arc groove is arranged on the side parallel to the first direction, the first wire core is arranged in the arc groove, and the outer cladding is in an oblong shape and covers the buffer support and the first wire core;

[0011] The rolling frames are arranged at two ends of the servo control cable corresponding to the first direction.

[0012] On the basis of the above technical solution, preferably, the first wire core includes an insulating layer, a hose and a wire, wherein:

[0013] A hose is coaxially arranged inside the insulating layer, and the insulating layer fits the arc groove;

[0014] A filler is arranged in the hose;

[0015] A plurality of conductive wires are arranged in the gap between the insulating layer and the hose.

[0016] On the basis of the above technical solution, preferably, the single wire body further includes a second wire core, a first winding layer, a third wire core and a second winding layer, wherein:

[0017] Two second wire cores are respectively arranged at two side edges of the buffer bracket parallel to the second direction, and the second wire cores abut against the first wire cores;

[0018] The first winding layer covers the buffer support, the first wire core and the second wire core;

[0019] The third wire core abuts against a side of the first winding layer away from the buffer support, and presses the first winding layer between the two second wire cores;

[0020] The second winding layer covers the buffer support, the first wire core, the second wire core, the first winding layer and the third wire core;

[0021] The elasticity of the first winding layer is greater than that of the second winding layer, and the outer covering layer covers the outer side of the second winding layer.

[0022] On the basis of the above technical solution, preferably, the buffer bracket is a hollow structure, and the diameter of the second wire core is greater than the wall thickness of the buffer bracket and less than 1.2 times the wall thickness of the buffer bracket;

[0023] The diameter of the second wire core is equal to or less than half of the distance between the side of the buffer support parallel to the second direction and the second winding layer;

[0024] The diameter of the third wire core is greater than or equal to 1.5 times the diameter of the second wire core.

[0025] On the basis of the above technical solution, preferably, the single wire body further includes a functional layer, and the functional layer includes a shielding layer, a spacer layer and an armor layer, wherein:

[0026] The shielding layer is wrapped around the outside of the second winding layer;

[0027] The spacer layer is coated on the outside of the shielding layer; the armor layer is coated on the outside of the spacer layer;

[0028] The outer sheath is coated on the outside of the armor layer.

[0029] On the basis of the above technical solution, preferably, the outer cladding layer has two planes parallel to the second direction, and two arc-shaped surfaces connected to the two planes;

[0030] The rolling frame is arranged in close contact with the plane, and the side of the rolling frame away from the plane is arc-shaped;

[0031] The cross-sectional line of the curved surface of the rolling frame is tangent to the cross-sectional line of the curved surface of the outer covering.

[0032] On the basis of the above technical solution, preferably, the rolling frame includes an arc plate, a first plane plate, a second plane plate and a top block, wherein:

[0033] The outer side surface of the arc plate is an arc surface;

[0034] The first plane plate and the second plane plate are each connected to a side edge of the arc plate, the first plane plate is connected to the outer cladding layer, and the first plane plate is provided with a plurality of notches;

[0035] The top block is connected to the arc plate and corresponds to the notch.

[0036] On the basis of the above technical solution, preferably, it also includes glue filling, which is arranged between two adjacent single-wire bodies and adheres to the arc surface.

[0037] On the basis of the above technical solution, preferably, the thickness of the outer cladding corresponding to the portion between two adjacent single wires is 1.5 to 2 times the thickness of the other portions;

[0038] The outer cladding layer is provided with a partition groove at a portion between two adjacent single wire bodies.

[0039] On the other hand, the present invention provides a method for preparing the above-mentioned servo control cable, comprising the following steps:

[0040] S1. Forming a buffer bracket by extrusion, and arranging a first wire core on both sides of the buffer bracket;

[0041] S2, holding the second wire core against the buffer support and the first wire core;

[0042] S3, setting a first winding layer to fix the buffer bracket and the first wire core;

[0043] S4, placing the third core on the outside of the first winding layer;

[0044] S5, setting a second winding layer to fix the third wire core and squeeze the first winding layer;

[0045] S6. Set up an outer covering layer.

[0046] The servo control cable of the present invention has the following beneficial effects compared with the prior art:

[0047] (1) By setting a plurality of single-wire bodies, the width of the control cable in the first direction is greater than the width in the second direction, and a rolling frame is set on the side of the first width. In this way, when the control cable is squeezed, it will roll over adaptively so that the two sides in the second direction are squeezed, that is, the sides parallel to the first direction are squeezed. Due to the large width, the strength is high and the anti-extrusion ability is good; and a buffer bracket is integrated in the single-wire body, so the two first wire cores will transfer the pressure to the buffer bracket, thereby achieving buffering, further improving the anti-extrusion ability, and thus avoiding cable damage;

[0048] (2) By setting the buffer bracket to a strip-shaped structure, and the rolling frame also to a strip-shaped structure, the first wire core abuts against the buffer bracket, and the rolling frame fits the outer side of the single wire body, the buffer bracket and the rolling frame can be formed by extrusion, and the outer sheath can also be extruded to cover the first wire core and the buffer bracket, so it has the advantage of convenient molding, and reduces the difficulty of integration while ensuring good performance of cable wear resistance and bending;

[0049] (3) In the first core, the conductor is arranged around the hose, and a filler is arranged inside the hose, so the hose and the filler inside can further achieve a buffering effect, thereby improving the cable's anti-extrusion ability;

[0050] (4) In the single wire body, the second wire core abuts against the buffer bracket and the first wire core and is covered by the first winding layer. The third wire core is arranged on the outside of the first winding layer and is covered by the second winding layer, which improves the transmission capacity of the cable. At the same time, the elasticity of the first winding layer is better than that of the second winding layer. In this way, when the second winding layer is wound, pressure can be applied to the third wire core, so that the first winding layer partially protrudes between the second wire cores, thereby achieving the tension of the first winding layer, which can ensure the stability of the installation of the second and third wire cores. At the same time, when the two sides in the first direction are subjected to extrusion pressure, the pressure will be transmitted to the third wire core and the second wire core. At this time, buffering can be achieved by relying on the elasticity of the first winding layer, and then buffering can be achieved by the buffer bracket, so that the control cable has good anti-extrusion ability in both the first and second directions;

[0051] (5) The buffer bracket is a hollow structure, and the diameter of the second core is less than 1.2 times the wall thickness of the buffer bracket. In this way, when the second core applies pressure to the buffer bracket, it is more uniform, which can avoid the problem that the buffer bracket is over-compressed and separated from the first core, and cannot be reset later; at the same time, the diameter of the third core must be greater than or equal to 1.5 times the diameter of the second core, so that the first winding layer can be better pressed, which can avoid the problem that the outer sheath expands outward when the cable is subjected to pressure in the second direction, causing the second core to fall downward, thereby ensuring the stability of the structure;

[0052] (6) In the roller structure, the cable is connected to the outer sheath only through the first flat plate. When the cable is subjected to pressure in the first direction, the arc plate of the roller tends to flatten, thereby pushing the top block to push the middle position of the outer sheath. The first winding layer and the buffer bracket are then subjected to force, thereby achieving good buffering to avoid excessive force on the first core. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 is a stereogram of a servo control cable of the present invention;

[0055] Figure 2 is an end view of the servo control cable of the present invention;

[0056] Figure 3 For the present invention Figure 2 A magnified view of the structure at point A;

[0057] Figure 4 A three-dimensional diagram of a single-wire body of a servo control cable of the present invention;

[0058] Figure 5 It is a structural diagram of the end face of a single-line body of a servo control cable of the present invention;

[0059] Figure 6 A perspective view of a roller rack for a servo control cable of the present invention;

[0060] Figure 7 is an end view of a roller frame of a servo control cable of the present invention;

[0061] In the figure: 1. single wire body; 11. buffer bracket; 12. first core; 121. insulation layer; 122. hose; 123. conductor; 13. outer sheath; 1301. plane; 1302. arc surface; 1303. partition groove; 14. second core; 15. first winding layer; 16. third core; 17. second winding layer; 101. arc groove; 18. functional layer; 181. shielding layer; 182. spacing layer; 183. armor layer; 2. rolling frame; 21. arc plate; 22. first plane plate; 23. second plane plate; 24. top block; 201. notch; 3. glue filling. DETAILED DESCRIPTION

[0062] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] like Figures 1 to 7 As shown, the servo control cable of the present invention includes a single wire body 1, a roller frame 2 and a glue filling 3.

[0064] like Figures 1 to 3 As shown, the servo control cable includes a plurality of single wire bodies 1, which are arranged in parallel along a first direction, so that the width of the servo control cable in the first direction is greater than the width in the second direction, and the second direction is perpendicular to the first direction; the rollers 2 are arranged at both ends of the servo control cable corresponding to the first direction;

[0065] As in the above structure, the servo control cable is configured as an integrated body of multiple single-line bodies 1 according to the transmission requirements;

[0066] A plurality of single-wire bodies 1 are arranged in parallel along a first direction, and the width of the servo control cable in the first direction is greater than the width in the second direction, so that when the servo control cable is subjected to force in the second direction, it will have a larger force-bearing area and good anti-extrusion ability;

[0067] When the servo control cable is subjected to force on the side in the first direction, since the cable is usually twisted circumferentially, one side of the cable will not be completely horizontal or vertical, but will be in a twisted state similar to a stranded wire. Therefore, when a section of the cable is subjected to force in the first direction, under the guidance of the roller 2, the cable will further rotate circumferentially, so that the side in the second direction with a larger width will be squeezed, that is, the force is transferred to the second direction where the cable has a higher anti-extrusion ability, thereby avoiding damage to the cable.

[0068] like Figure 2 As shown, the single wire body 1 includes a buffer support 11, a first wire core 12 and an outer cladding 13. The buffer support 11 is a strip structure, and an arc groove 101 is provided on the side parallel to the first direction. The first wire core 12 is arranged in the arc groove 101. The outer cladding 13 is an oblong shape and covers the buffer support 11 and the first wire core 12.

[0069] As in the above structure, in the single wire body 1, a buffer bracket 11 is arranged between the two first wire cores 12, and the two first wire cores 12 and the buffer bracket 11 are arranged side by side in the second direction, so that when the cable is subjected to force in the second direction, the buffer bracket 11 can be relied on for compression buffering, thereby further improving the anti-extrusion ability of the cable;

[0070] In this structure, an arc groove 101 is provided on the buffer bracket 11, so that the two first wire cores 12 can be positioned to ensure the stability of the structure and facilitate the buffer bracket 11 to drive the two first wire cores 12 to reset;

[0071] Furthermore, the outer layer 13 is configured to be an oblong shape, so that the roller frame 2 can be conveniently arranged on the side.

[0072] Specifically, according to application requirements, the rolling frame 2 can be made of metal, rubber or plastic.

[0073] In the cable structure, the buffer bracket 11 is set to a strip structure, and the roller frame 2 is also a strip structure, the first wire core 12 abuts the buffer bracket 11, and the roller frame 2 fits the outer side of the single wire body 1, the buffer bracket 11 and the roller frame 2 can be formed by extrusion, and the outer sheath 13 can also be extruded to cover the first wire core 12 and the buffer bracket 11, so it has the advantage of convenient molding, and reduces the difficulty of integration while ensuring the cable wear resistance and good bending performance;

[0074] like Figure 2 As shown, the first wire core 12 includes an insulating layer 121, a hose 122 and a wire 123, wherein the hose 122 is coaxially arranged inside the insulating layer 121, and the insulating layer 121 fits the arc groove 101; a filler is arranged inside the hose 122; and a plurality of wires 123 are arranged in the gap between the insulating layer 121 and the hose 122;

[0075] As described above, in the structure of the first wire core 12, the wire 123 is arranged between the insulating layer 121 and the hose 122, and the first wire core 12 is supported in the arc groove 101 of the buffer bracket 11 through the insulating layer 121;

[0076] The hose 122 is located at the innermost side, and the wire 123 surrounds the hose 122. The hose 122 is also provided with a filler, so that when the cable is squeezed, the deformation of the hose 122 can be used for buffering, thereby avoiding damage.

[0077] Specifically, the filler may be polyethylene, polypropylene or synthetic rubber filler;

[0078] In some embodiments, the hose 122 may be a solid structure made of rubber.

[0079] like Figure 2 and Figure 3 As shown, the single wire body 1 also includes a second core 14, a first winding layer 15, a third core 16 and a second winding layer 17, wherein two second cores 14 are respectively arranged at two sides of the buffer bracket 11 parallel to the second direction, and the second cores 14 abut against the first core 12; the first winding layer 15 covers the buffer bracket 11, the first core 12 and the second core 14; the third core 16 abuts against the side of the first winding layer 15 away from the buffer bracket 11, and presses the first winding layer 15 between the two second cores 14; the second winding layer 17 covers the buffer bracket 11, the first core 12, the second core 14, the first winding layer 15 and the third core 16; the elasticity of the first winding layer 15 is better than the elasticity of the second winding layer 17, and the outer sheath 13 covers the outside of the second winding layer 17;

[0080] As in the above structure, in the single wire body 1, the second wire core 14 is arranged on both sides of the buffer bracket 11, and the second wire core 14 abuts against the buffer bracket 11 and the first wire core 12, and is covered by the first winding layer 15, and the third wire core 16 is arranged outside the first winding layer 15 and is covered by the second winding layer 17, which improves the transmission capacity of the cable;

[0081] At the same time, the elasticity of the first winding layer 14 is better than that of the second winding layer 17, so that when the second winding layer 17 is wound, pressure can be applied to the third core 16, so that the first winding layer 15 partially protrudes between two adjacent second cores 14, thereby achieving tensioning of the first winding layer 15, and then limiting the two second cores 14, which can ensure the stability of the installation of the second core 14 and the third core 16;

[0082] At the same time, when the two sides in the first direction are subjected to extrusion pressure, the pressure will be transmitted to the third core 16 and the second core 14. At this time, buffering can be achieved by relying on the elasticity of the first winding layer 15, and then buffering can be achieved through the buffer bracket 11, so that the control cable has good anti-extrusion ability in both the first direction and the second direction;

[0083] In this structure, the second core 14 and the third core 16 can be integrated in the same manner as a conventional multi-core cable, and the first winding layer 15 and the second winding layer 17 can be arranged by winding, which has the advantage of convenient integration.

[0084] In some embodiments, the second winding layer 17 is wound or braided with a non-elastic braided layer.

[0085] like Figure 2 and Figure 3 As shown, the buffer bracket 11 is a hollow structure, the diameter of the second core 14 is greater than the wall thickness of the buffer bracket 11 and less than 1.2 times the wall thickness of the buffer bracket 11; the diameter of the second core 14 is equal to or less than half of the distance between the side of the buffer bracket 11 parallel to the second direction and the second winding layer 17; the diameter of the third core 16 is greater than or equal to 1.5 times the diameter of the second core 14;

[0086] As in the above structure, the buffer bracket 11 is a hollow structure, and the diameter of the second core 14 is greater than the wall thickness of the buffer bracket 11. This can avoid squeezing the buffer bracket 11 when the cable is subjected to force in the first direction due to the point where the second core 14 transmits force being too close to the joint between the buffer bracket 11 and the first core 12, causing the buffer bracket 11 to be excessively separated from the first core 12, which is conducive to the buffer bracket 11 subsequently driving the first core 12 and the second core 14 to reset;

[0087] Since the buffer bracket 11 is provided with an arc groove 101, the thickness at the corners is relatively large, and the diameter of the second wire core 14 can be adjusted accordingly;

[0088] At the same time, the diameter of the second wire core 14 is less than 1.2 times the wall thickness of the buffer bracket 11, so that when the second wire core 14 applies pressure to the buffer bracket 11, it is more uniform, and it can also avoid the problem that the buffer bracket 11 is over-compressed and separated from the first wire core 12, and cannot be reset later. At the same time, this also makes full use of the thickness of the buffer bracket 11 to achieve good buffering;

[0089] In this structure, the diameter of the third core 16 is greater than or equal to 1.5 times the diameter of the second core 14. In this way, when the second winding layer 17 is wound and pressure is applied, the third core 16 can better press the first winding layer 15 and protrude between the two adjacent second cores 14. This can avoid the problem that the outer sheath 13 expands outward when the cable is subjected to pressure in the second direction, causing the second core 14 to fall downward. Therefore, after the pressure is eliminated, the second winding layer 17 can normally drive the third core 16 to reset to separate the two second cores 14, thereby ensuring the stability of the structure.

[0090] Specifically, since the cable is usually long and the extrusion force is only locally applied, the second core 14 is less likely to fall, so the diameter ratio of the second core 14 and the third core 16 can also be adaptively adjusted.

[0091] like Figure 3 As shown, the single wire body 1 further includes a functional layer 18, and the functional layer 18 includes a shielding layer 181, a spacer layer 182 and an armor layer 183, wherein the shielding layer 181 is coated on the outside of the second winding layer 17; the spacer layer 182 is coated on the outside of the shielding layer 181; the armor layer 183 is coated on the outside of the spacer layer 182; and the outer sheath 13 is coated on the outside of the armor layer 183;

[0092] As in the above structure, in order to ensure the structural stability of the cable and the stability of signal transmission, it is also provided with a shielding layer 181, a spacer layer 182 and an armor layer 183;

[0093] The shielding layer 181 is made of copper to play a shielding role, the spacing layer 182 can be made of insulating, fireproof, waterproof and other materials to improve the protection performance of the cable, and the armor layer 183 can be made of steel strip, aluminum strip, aluminum-magnesium alloy and other materials;

[0094] The shielding layer 181 and the armor layer 183 are spaced apart by a spacer layer 182, and the armor layer 183 is arranged on the outermost side.

[0095] like Figure 4 and Figure 5 As shown, the outer cladding 13 has two planes 1301 parallel to the second direction, and two arcuate surfaces 1302 connected to the two planes 1301; the rolling frame 2 is arranged in contact with the planes 1301, and the side of the rolling frame 2 away from the planes 1301 is arcuate; the cross-sectional line of the arcuate side of the rolling frame 2 is tangent to the cross-sectional line of the arcuate surface 1302 of the outer cladding 13;

[0096] As in the above structure, the outer sheath 13 is in the shape of an elongated ellipse, so it has two planes 1301 and two curved surfaces 1302, and the roller frame 2 has a curved surface and a plane. By controlling the cross-sectional line of the curved surface of the roller frame 2 to be tangent to the cross-sectional line of the curved surface 1302 of the outer sheath 13, a smooth transition can be made between the outer sheath 13 and the roller frame 2; in this way, when the cable is subjected to force in the first direction, the cable is more likely to rotate circumferentially so that the two sides corresponding to the second direction are subjected to force, which improves the torsional performance of the cable and further improves the anti-extrusion ability.

[0097] like Figure 6 and Figure 7 As shown, the rolling frame 2 includes an arc plate 21, a first plane plate 22, a second plane plate 23 and a top block 24, wherein the outer side surface of the arc plate 21 is an arc surface; the first plane plate 22 and the second plane plate 23 are respectively connected to a side edge of the arc plate 21, the first plane plate 22 is connected to the outer cladding 13, and the first plane plate 22 is provided with a plurality of notches 201; the top block 24 is connected to the arc plate 21 and corresponds to the notches 201;

[0098] As described above, the rolling frame 2 is composed of four parts: an arc plate 21, a first plane plate 22, a second plane plate 23 and a top block 24;

[0099] Among them, in the rolling frame 2, the first plane plate 22 and the second plane plate 23 are not connected, and only the first plane plate 22 and the outer sheath 13 are connected. In this way, when the cable is subjected to pressure in the first direction, if it is impossible to achieve twisting to transfer the force to the second direction, the arc plate 21 of the rolling frame 2 will show a tendency to flatten, and the second plane plate 23 will move in a direction away from the first plane plate 22, and then the deformed arc plate 21 will push the top block 24 to move, and then the top block 24 will push the middle position of the outer sheath 13, and then the first winding layer 15 and the buffer bracket 11 will be stressed, so as to achieve good buffering and avoid the problem of excessive stress on the first core 12 and damage;

[0100] Specifically, the notch 201 corresponding to the top block 24 is configured as a strip-shaped groove, thereby providing space for the displacement of the top block 24 and avoiding interference problems.

[0101] like Figure 2 As shown, the filler 3 is disposed between two adjacent single-wire bodies 1 and adheres to the arc-shaped surface 1302;

[0102] As in the above structure, a filler 3 is provided between two separated single-wire bodies 1, which can ensure the stability of the connection between the multiple single-wire bodies 1, thereby further improving the structural strength of the cable;

[0103] At the same time, this can also prevent debris and foreign matter from accumulating in the recesses of the cables, thereby avoiding damage to the cables.

[0104] like Figure 2 As shown, the thickness of the outer cladding 13 corresponding to the portion between two adjacent single wire bodies 1 is 1.5 to 2 times the thickness of other portions; the outer cladding 13 corresponding to the portion between two adjacent single wire bodies 1 is provided with a partition groove 1303;

[0105] As in the above structure, when the outer cladding 13 is provided, the portion between two adjacent single wire bodies 1 has a larger back, which facilitates the provision of the partition groove 1303;

[0106] When the cable single wires 1 need to be separated, the adjacent single wires 1 can be cut apart through the partition grooves 1303, so that the terminals at the cable head can be connected to different devices, thus improving the convenience of application.

[0107] Specifically, since the glue filling 3 is filled later, it is convenient to separate from the outer cladding 13 to ensure the convenience of separating the single wire body 1.

[0108] The method for preparing the above-mentioned servo control cable comprises the following steps:

[0109] S1, forming a buffer bracket 11 by extrusion, and arranging a first wire core 12 on both sides of the buffer bracket 11;

[0110] S2, holding the second wire core 14 against the buffer bracket 11 and the first wire core 12;

[0111] S3, setting a first winding layer 15 to fix the buffer bracket 11 and the first wire core 12;

[0112] S4, placing the third core 16 outside the first winding layer 15;

[0113] S5, setting a second winding layer 17 to fix the third wire core 16 and squeeze the first winding layer 15;

[0114] S6. Set the outer covering layer 13.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A servo control cable, characterized in that: It comprises a plurality of single-line bodies (1) and a rolling frame (2), wherein: A plurality of the single-wire bodies (1) are arranged in parallel along a first direction, so that the width of the servo control cable in the first direction is greater than the width in a second direction, and the second direction is perpendicular to the first direction; The single wire body (1) comprises a buffer support (11), a first wire core (12) and an outer cladding (13); the buffer support (11) is in a strip-shaped structure, and an arc-shaped groove (101) is provided on a side parallel to a first direction; the first wire core (12) fits in the arc-shaped groove (101); the outer cladding (13) is in an oblong shape and covers the buffer support (11) and the first wire core (12); The rolling frame (2) is arranged at two ends of the servo control cable corresponding to the first direction.

2. The servo control cable according to claim 1, characterized in that: The first wire core (12) comprises an insulating layer (121), a hose (122) and a wire (123), wherein: The hose (122) is coaxially arranged on the inner side of the insulating layer (121), and the insulating layer (121) fits the arc-shaped groove (101); A filler is arranged in the hose (122); A plurality of the conductive wires (123) are arranged in the gap between the insulating layer (121) and the hose (122).

3. The servo control cable according to claim 2, characterized in that: The single wire (1) further comprises a second wire core (14), a first winding layer (15), a third wire core (16) and a second winding layer (17), wherein: Two second wire cores (14) are respectively arranged at two side edges of the buffer bracket (11) parallel to the second direction, and the second wire cores (14) abut against the first wire core (12); The first winding layer (15) covers the buffer support (11), the first wire core (12) and the second wire core (14); The third wire core (16) abuts against a side of the first winding layer (15) away from the buffer support (11), and presses the first winding layer (15) between the two second wire cores (14); The second winding layer (17) covers the buffer support (11), the first wire core (12), the second wire core (14), the first winding layer (15) and the third wire core (16); The elasticity of the first winding layer (15) is better than the elasticity of the second winding layer (17), and the outer covering layer (13) is coated on the outside of the second winding layer (17).

4. The servo control cable according to claim 3, characterized in that: The buffer support (11) is a hollow structure, and the diameter of the second wire core (14) is greater than the wall thickness of the buffer support (11) and less than 1.2 times the wall thickness of the buffer support (11); The diameter of the second wire core (14) is equal to or less than half of the distance between the side of the buffer support (11) parallel to the second direction and the second winding layer (17); The diameter of the third wire core (16) is greater than or equal to 1.5 times the diameter of the second wire core (14).

5. The servo control cable according to claim 3 or 4, characterized in that: The single wire (1) further comprises a functional layer (18), wherein the functional layer (18) comprises a shielding layer (181), a spacer layer (182) and an armor layer (183), wherein: The shielding layer (181) is coated on the outside of the second winding layer (17); The spacer layer (182) is coated on the outside of the shielding layer (181); The armor layer (183) is coated on the outside of the spacer layer (182); The outer covering layer (13) is coated on the outside of the armor layer (183).

6. The servo control cable according to any one of claims 1 to 4, characterized in that: The outer cladding layer (13) has two planes (1301) parallel to the second direction, and two arc-shaped surfaces (1302) connected to the two planes (1301); The rolling frame (2) is arranged in contact with the plane (1301), and a side of the rolling frame (2) away from the plane (1301) is arc-shaped; The cross-sectional line of the curved surface of the rolling frame (2) is tangent to the cross-sectional line of the curved surface (1302) of the outer covering layer (13).

7. The servo control cable according to claim 6, characterized in that: The rolling frame (2) comprises an arc plate (21), a first plane plate (22), a second plane plate (23) and a top block (24), wherein: The outer side surface of the arc plate (21) is an arc-shaped surface; The first plane plate (22) and the second plane plate (23) are each connected to a side edge of the arc plate (21), the first plane plate (22) is connected to the outer cladding layer (13), and the first plane plate (22) is provided with a plurality of notches (201); The top block (24) is connected to the arc plate (21) and corresponds to the notch (201).

8. The servo control cable according to claim 6, characterized in that: It also includes a filler (3), wherein the filler (3) is arranged between two adjacent single-wire bodies (1) and adheres to the arc-shaped surface (1302).

9. The servo control cable according to any one of claims 1 to 4, characterized in that: The thickness of the outer cladding (13) corresponding to the portion between two adjacent single wires (1) is 1.5 to 2 times the thickness of the other portions; The outer cladding (13) is provided with a partition groove (1303) corresponding to the portion between two adjacent single wire bodies (1).

10. A method for preparing a servo control cable as claimed in claim 3 or 4, characterized in that: The following steps are involved: S1. Forming the buffer bracket (11) by extrusion, and arranging the first wire core (12) on both sides of the buffer bracket (11); S2, holding the second wire core (14) against the buffer support (11) and the first wire core (12); S3, providing the first winding layer (15) to fix the buffer support (11) and the first wire core (12); S4, placing the third wire core (16) on the outside of the first winding layer (15); S5, providing the second winding layer (17) to fix the third wire core (16) and to compress the first winding layer (15); S6. Arrange the outer covering layer (13).

Images