A servo control cable and its manufacturing method

Abstract

This invention relates to the field of cable technology and proposes a servo control cable and its manufacturing method. The cable includes multiple single-wire bodies and rollers. The single-wire bodies are arranged side-by-side along a first direction, such that the width of the servo control cable in the first direction is greater than the width in a second direction. Each single-wire body includes a buffer support, a first core, and an outer sheath. The buffer support has a strip-shaped structure and an arc-shaped groove on its side parallel to the first direction. The first core fits into the arc-shaped groove. The outer sheath is elongated elliptical and covers the buffer support and the first core. Rollers are positioned at both ends of the servo control cable corresponding to the first direction. By setting a buffer support and ensuring that the width of the control cable in the first direction is greater than the width in the second direction, and by placing rollers on the side of the first width, the invention allows the control cable to adaptively roll when compressed, so that the two sides in the second direction bear the compression, thus exhibiting good compression resistance.

Description

TECHNICAL FIELD

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

[0002] Control cables are specialized cables used in electrical control systems. They are primarily designed to transmit control signals, power signals, and facilitate communication between signals. Control cables have a wide range of applications in industries, construction, communication, and equipment automation. Depending on the working environment and requirements, the types and designs of control cables may vary. Due to the importance of control cables in operation, it is necessary to ensure that control cables have good structural strength to ensure normal signal transmission and avoid accidents.

[0003] The utility model with the authorized publication number CN221946837U discloses a kind of aging-resistant control cable, it includes: cable main body, cable main body includes cable core, the outer surface of cable core is fixedly connected with cladding film, the outer surface of cladding film is fixedly connected with insulating layer, the outer surface of insulating layer is fixedly connected with armor layer, the outer surface of armor layer is fixedly connected with heat-resistant layer, the outer surface of heat-resistant layer is fixedly connected with anti-aging layer;

[0004] The control cable structure in the above-mentioned scheme is a widely used structure at present, i.e., the cable core is located at the innermost side, and the outer side is the functional layers of insulating layer, shielding layer, armor layer (armoring layer) and so on, which can avoid interference, stabilize the signal transmission of the control cable, and to some extent, avoid damage. However, this type of control cable structure is too compact, and has good performance in terms of anti-friction and anti-bending, but poor buffering capacity, and cannot withstand squeezing and impact.

[0005] The invention patent with the authorized publication number CN114420349B discloses a kind of high-temperature-resistant soft control cable for automobile baking finish room, which is provided with a buffer component, and the buffer component is composed of a binding layer, a trapezoidal boss inside the binding layer, a bending rod and an arc-shaped guard plate. The invention patent with the authorized publication number CN112017816B discloses a kind of fluoroplastic insulation and sheath high-temperature-resistant shielding control cable, which is provided with a spring shaft connected buffer plate for buffering. However, in the two schemes, the buffer structure is relatively complex, and the cable usually has a large length. When the bending rod and arc-shaped guard plate in the first scheme are arranged inside, and the spring shaft and buffer plate in the second scheme are arranged, the integration is not convenient, and it is easy to interfere with the bending application performance of the cable. SUMMARY

[0006] Therefore, the application provides a servo control cable with good buffering effect and without interfering with the bending application performance of the cable and a preparation method thereof, so as to solve the problems of the inconvenient integration and the interference with the bending performance of the cable of the existing cable buffering structure.

[0007] The technical scheme of the application is implemented as follows:

[0008] In one aspect, the application provides a servo control cable, comprising a plurality of single wire bodies and a rolling frame, wherein,

[0009] The plurality of single wire bodies are arranged side by side along a first direction, and a second direction is perpendicular to the first direction, so that the width of the servo control cable in the first direction is greater than the width of the servo control cable in the second direction.

[0010] The single wire body comprises a buffering support, a first wire core and an outer cladding layer, the buffering support is in a strip structure, arc-shaped grooves are arranged on the side edges parallel to the first direction, the first wire core is arranged in the arc-shaped grooves, and the outer cladding layer is in a long oval shape and covers the buffering support and the first wire core.

[0011] The rolling frame is arranged at both ends of the servo control cable corresponding to the first direction.

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

[0013] The hose is coaxially arranged on the inner side of the insulating layer, and the insulating layer is attached to the arc-shaped grooves;

[0014] The hose is internally provided with a filler;

[0015] The wire is arranged in a plurality of roots in the gap between the insulating layer and the hose.

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

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

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

[0019] The third wire core abuts against the side of the first winding layer away from the buffering support, and compresses the first winding layer towards the two second wire cores;

[0020] The second winding layer covers the buffering 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 better than the elasticity of the second winding layer, and the outer cladding layer is arranged on the outer side of the second winding layer.

[0022] In the above technical scheme, preferably, the buffer support is a hollow structure, the diameter of the second wire core is greater than the wall thickness of the buffer support and less than 1.2 times the wall thickness of the buffer support;

[0023] The diameter of the second wire core is equal to or less than one-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] In the above technical scheme, preferably, the single wire body further comprises a functional layer, the functional layer comprising a shielding layer, a spacing layer and an armor layer, wherein,

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

[0027] The spacing layer is wrapped outside the shielding layer; and the armor layer is wrapped outside the spacing layer.

[0028] The outer wrapping layer is wrapped outside the armor layer.

[0029] In the above technical scheme, preferably, the outer wrapping layer has two planes parallel to the second direction and two arc-shaped planes connected with the two planes;

[0030] The rolling support is arranged to be attached to the plane, and the side of the rolling support away from the plane is arc-shaped;

[0031] The cross-sectional line of the arc-shaped side of the rolling support is tangent to the cross-sectional line of the arc-shaped plane of the outer wrapping layer.

[0032] In the above technical scheme, preferably, the rolling support comprises an arc plate, a first plane plate, a second plane plate and a top block, wherein,

[0033] The outer side of the arc plate is arc-shaped;

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

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

[0036] In the above technical scheme, preferably, further comprising a filling glue, the filling glue being arranged between the adjacent two single wire bodies and adhering to the arc-shaped plane.

[0037] In the above technical scheme, preferably, the thickness of the outer wrapping layer corresponding to the part between the adjacent two single wire bodies is 1.5-2 times the thickness of other parts.

[0038] The outer wrapping layer is provided with a separation groove corresponding to the part between the adjacent two single wire bodies.

[0039] In another aspect, the present application provides a method for manufacturing the servo control cable, comprising the following steps:

[0040] S1, forming a buffer support through extrusion, and arranging a first wire core on both sides of the buffer support;

[0041] S2, arranging a second wire core on the buffer support and the first wire core;

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

[0043] S4, arranging a third wire core outside the first winding layer;

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

[0045] S6, arranging an outer layer.

[0046] The servo control cable of the present application has the following advantages over the prior art:

[0047] (1) By arranging a plurality of single wire bodies, the first direction width of the control cable is greater than the second direction width, and a rolling frame is arranged on the side of the first width, so that when the control cable is extruded, it will roll over to make the two side edges in the second direction bear the extrusion, i.e. the side edges parallel to the first direction bear the pressure. Since the width is larger, the strength is higher, and the extrusion resistance is good. Moreover, the buffer support is integrated in the single wire body, so that the two first wire cores can transmit the pressure to the buffer support to achieve buffering and further improve the extrusion resistance, thereby avoiding damage to the cable;

[0048] (2) By arranging the buffer support in a strip structure and the rolling frame in a strip structure, the first wire core is arranged on the buffer support, and the rolling frame is arranged on the outside of the single wire body. The buffer support and the rolling frame can be formed by extrusion, and the outer layer can be wrapped around the first wire core and the buffer support by extrusion. Therefore, it has the advantage of convenient forming, and reduces the integration difficulty while ensuring good wear resistance and bending performance of the cable;

[0049] (3) In the first wire core, the wire is arranged around the hose, and the hose is internally provided with a filler, so that the hose and the internal filler can further achieve the buffering effect, thereby improving the extrusion resistance of the cable;

[0050] (4) in the single wire body, the second wire core abuts against the buffer support and the first wire core, and is covered by the first winding layer, the third wire core is arranged outside 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, so that when the second winding layer is wound, pressure can be applied to the third wire core, so that the first winding layer locally protrudes between the second wire cores, thereby realizing tensioning of the first winding layer, which can ensure the stability of the installation of the second wire core and the third wire core; at the same time, when the two sides in the first direction bear the extrusion force, the pressure will be transmitted to the third wire core and the second wire core, at this time, the elasticity of the first winding layer can be relied on to realize buffering, and further buffering can be realized through the buffer support, so that the control cable has good extrusion resistance in the first direction and the second direction;

[0051] (5) the buffer support is a hollow structure, the diameter of the second wire core is less than 1.2 times the wall thickness of the buffer support, so that when the second wire core applies pressure to the buffer support, it is more uniform, which can avoid excessive compression of the buffer support from the first wire core, and subsequent problems of not being able to reset; at the same time, the diameter of the third wire core is greater than or equal to 1.5 times the diameter of the second wire core, so that the first winding layer can be better pressed, which can avoid the problem that when the cable is subjected to pressure in the second direction, the outer layer expands outward, causing the second wire core to fall downward, thereby ensuring the stability of the structure;

[0052] (6) in the roller structure, only the first plane plate is connected with the outer layer, so that when the cable is subjected to pressure in the first direction, the arc plate of the roller will tend to flatten, thereby pushing the top block to push the middle position of the outer layer, and then the first winding layer and the buffer support are stressed to achieve good buffering to avoid excessive stress on the first wire core. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0054] Figure 1 It is a perspective view of the servo control cable of the present application;

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

[0056] Figure 3 It is a Figure 2 It is an enlarged view of the structure of point A;

[0057] Figure 4 This is a perspective view of a single wire of the servo control cable of the present invention;

[0058] Figure 5 This is a structural diagram of the end face of a single wire in the servo control cable of the present invention.

[0059] Figure 6 This is a perspective view of the roller frame of the servo control cable of the present invention;

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

[0061] In the diagram: 1. Single wire body; 11. Buffer bracket; 12. First wire core; 121. Insulation layer; 122. Flexible tube; 123. Wire; 13. Outer sheath; 1301. Plane; 1302. Arc-shaped surface; 1303. Groove; 14. Second wire core; 15. First winding layer; 16. Third wire core; 17. Second winding layer; 101. Arc-shaped groove; 18. Functional layer; 181. Shielding layer; 182. Spacing layer; 183. Armoring layer; 2. Roller frame; 21. Arc plate; 22. First flat plate; 23. Second flat plate; 24. Top block; 201. Groove; 3. Filler. Detailed Implementation

[0062] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

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

[0064] like Figures 1-3 As shown, the servo control cable includes multiple single wires 1, which are arranged side by side along a first direction, such 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 described above, the servo control cable is configured as an integrated unit of multiple single-wire bodies 1 according to transmission requirements;

[0066] Multiple single-wire bodies 1 are arranged side by side along the first direction, so that the width of the servo control cable in the first direction is greater than the width in the second direction. Thus, when the servo control cable is subjected to force in the second direction, it will have a larger force-bearing area and good resistance to compression.

[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 similar to the twisted shape of 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 rotate further circumferentially, so that the second side with a wider width can bear the compression. That is, the force is transferred to the second direction where the cable has a higher compression resistance, thereby avoiding cable damage.

[0068] like Figure 2 As shown, the single-line body 1 includes a buffer support 11, a first wire core 12 and an outer sheath 13. The buffer support 11 has a strip-shaped structure and an arc-shaped groove 101 is provided on the side parallel to the first direction. The first wire core 12 is disposed in the arc-shaped groove 101. The outer sheath 13 is an elongated ellipse and covers the buffer support 11 and the first wire core 12.

[0069] As described above, in the single-wire body 1, a buffer bracket 11 is provided 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. In this way, when the cable is subjected to force in the second direction, the buffer bracket 11 can be used for compression buffering, thereby further improving the cable's resistance to compression.

[0070] In this structure, the buffer bracket 11 is provided with an arc-shaped groove 101, which can position the two first wire cores 12 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 cladding layer 13 is designed as an elongated ellipse, which facilitates the installation of the roller frame 2 on the side.

[0072] Specifically, depending on the application requirements, the roller frame 2 can be made of metal, rubber or plastic.

[0073] In this cable structure, the buffer support 11 is set as a strip structure, and the roller 2 is also a strip structure. The first core 12 abuts against the buffer support 11, and the roller 2 fits against the outer side of the single wire body 1. Both the buffer support 11 and the roller 2 can be formed by extrusion. The outer sheath 13 can also be formed by extrusion to cover the first core 12 and the buffer support 11. Therefore, it has the advantage of convenient forming and reduces the integration difficulty while ensuring the cable's wear resistance and bending performance.

[0074] like Figure 2 As shown, the first core 12 includes an insulation layer 121, a flexible tube 122, and a conductor 123. The flexible tube 122 is coaxially disposed on the inner side of the insulation layer 121, and the insulation layer 121 fits the arc-shaped groove 101. The flexible tube 122 is filled with a filler. Multiple conductors 123 are disposed in the gap between the insulation layer 121 and the flexible tube 122.

[0075] As shown in the above structure, in the first core 12 structure, the conductive wire 123 is arranged between the insulating layer 121 and the hose 122, and the first core 12 is supported in the arc-shaped slot 101 of the buffer support 11 through the insulating layer 121;

[0076] The hose 122 is located at the innermost side, the conductive wire 123 surrounds the hose 122, and the hose 122 is further provided with a filler, so that when the cable is subjected to extrusion, the deformation of the hose 122 can be relied on for buffering, thereby avoiding damage.

[0077] Specifically, the filler can be a polyethylene, polypropylene or synthetic rubber filler.

[0078] In some embodiments, the hose 122 can adopt a solid structure of rubber material.

[0079] As shown in FIGS. 1, 2 and 3, the single-wire body 1 further comprises a second core 14, a first winding layer 15, a third core 16 and a second winding layer 17. Figure 2 Figure 3 As shown in FIGS. 1, 2 and 3, the single-wire body 1 further comprises a second core 14, a first winding layer 15, a third core 16 and a second winding layer 17.

[0080] As shown in the above structure, in the single-wire body 1, the two sides of the buffer support 11 are each provided with the second core 14, and the second core 14 supports the buffer support 11 and the first core 12 and is covered by the first winding layer 15, the third 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 locally protrudes between the two adjacent second cores 14, thereby realizing tensioning of the first winding layer 15, and thereby 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 side edges of the first direction bear the extrusion force, the pressure is transmitted to the third core 16 and the second core 14, at this time, the elasticity of the first winding layer 15 can be relied on to achieve buffering, and further buffering is achieved through the buffering support 11, so that the control cable has good extrusion resistance in 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 way as the 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 woven with an inelastic woven layer.

[0085] As shown in Figure 2 and Figure 3 , the buffering support 11 is a hollow structure, the diameter of the second core 14 is greater than the wall thickness of the buffering support 11 and less than 1.2 times the wall thickness of the buffering support 11; the diameter of the second core 14 is equal to or less than half the distance between the side edge of the buffering support 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 described above, the buffering support 11 is a hollow structure, and the diameter of the second core 14 is greater than the wall thickness of the buffering support 11. When the cable is subjected to force in the first direction, the point of force transmission of the second core 14 can be prevented from being too close to the joint of the buffering support 11 and the first core 12, which can cause the buffering support 11 to be extruded, causing the buffering support 11 to be excessively separated from the first core 12, which is beneficial to the subsequent resetting of the buffering support 11, the first core 12 and the second core 14;

[0087] The buffering support 11 is provided with an arc-shaped groove 101, so that the thickness of the edge is large, and the diameter of the second core 14 can be adjusted accordingly;

[0088] At the same time, the diameter of the second core 14 is less than 1.2 times the wall thickness of the buffering support 11, so that the pressure applied by the second core 14 to the buffering support 11 is more uniform, and the buffering support 11 cannot be excessively separated from the first core 12, which can avoid the subsequent resetting problem, and at the same time, the thickness of the buffering support 11 is fully utilized to achieve good buffering;

[0089] In the structure, the diameter of the third core 16 is greater than or equal to 1.5 times the diameter of the second core 14, so that when the second winding layer 17 is wound and pressure is applied, the third core 16 can better hold the first winding layer 15 and protrude between the two adjacent second cores 14, which can avoid the problem that the outer jacket 13 expands outward when the cable is subjected to pressure in the second direction, causing the second core 14 to fall downward, so that after the pressure is removed, 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 usually has a large length and the extrusion force only causes local stress, the problem of the second core 14 falling is less likely to occur, so the diameter ratio of the second core 14 and the third core 16 can also be adaptively adjusted.

[0091] As shown in Figure 3 , the single-wire body 1 further includes a functional layer 18, the functional layer 18 including a shielding layer 181, a spacing layer 182, and an armor layer 183, wherein the shielding layer 181 is wrapped outside the second winding layer 17; the spacing layer 182 is wrapped outside the shielding layer 181; the armor layer 183 is wrapped outside the spacing layer 182; and the outer jacket 13 is wrapped outside the armor layer 183.

[0092] As described above, in order to ensure the structural stability of the cable and the stability of signal transmission, the shielding layer 181, the spacing layer 182, and the armor layer 183 are further provided.

[0093] The shielding layer 181 is made of copper to shield, 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 strips, aluminum strips, aluminum-magnesium alloy, etc.

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

[0095] As shown in Figure 4 and Figure 5 , the outer jacket 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 to fit the planes 1301, and the side of the rolling frame 2 away from the planes 1301 is arc-shaped; the cross-sectional line of the arc-shaped side of the rolling frame 2 is tangent to the cross-sectional line of the arc-shaped surface 1302 of the outer jacket 13.

[0096] As the above structure, the outer cladding 13 is long elliptical, so it has two planes 1301 and two arc surfaces 1302, while the roller frame 2 has one arc surface and one plane, by controlling the cross section line of the arc surface of the roller frame 2 to be tangent to the cross section line of the arc surface 1302 of the outer cladding 13, so that the outer cladding 13 and the roller frame 2 have a smooth transition; thus when the cable is stressed in the first direction, the cable is more likely to rotate circumferentially to allow the two edges corresponding to the second direction to be stressed, which improves the cable torsion performance and further improves the extrusion resistance.

[0097] As shown in Figure 6 and Figure 7 , the roller 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 of the arc plate 21 is an arc surface; the first plane plate 22 and the second plane plate 23 are connected to one side of the arc plate 21 respectively, 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 the above structure, the roller frame 2 is composed of the arc plate 21, the first plane plate 22, the second plane plate 23 and the top block 24;

[0099] Among them, in the roller frame 2, the first plane plate 22 is not connected to the second plane plate 23, and only the first plane plate 22 is connected to the outer cladding 13, so that when the cable is stressed in the first direction, if the torsion cannot transfer the force to the second direction, the arc plate 21 of the roller frame 2 will tend to flatten, the second plane plate 23 will move away from the first plane plate 22, and then the top block 24 will be pushed to displace by the deformed arc plate 21, and then the outer cladding 13 will be pushed by the top block 24 at the middle position, and then the first winding layer 15 and the buffer support 11 will be stressed to achieve good buffering and avoid damage to the first wire core 12 due to excessive stress;

[0100] Specifically, the notches 201 corresponding to the top block 24 are provided as strip-shaped notches, thereby providing space for the displacement of the top block 24 and avoiding interference problems.

[0101] As shown in Figure 2 , the adhesive 3 is arranged between the two adjacent single wire bodies 1 and adheres to the arc surface 1302;

[0102] As the above structure, the adhesive 3 is arranged between the two adjacent single wire bodies 1, which can ensure the stability of the connection of the plurality of single wire bodies 1, thereby further improving the structural strength of the cable;

[0103] At the same time, this can also avoid the accumulation of sundries in the recess of the cable, thereby avoiding damage to the cable.

[0104] AsFigure 2 As shown, the thickness of the outer cladding 13 corresponding to the part between the two adjacent single wires 1 is 1.5-2 times the thickness of other parts; the outer cladding 13 corresponding to the part between the two adjacent single wires 1 is provided with a separation groove 1303;

[0105] As shown above, when the outer cladding 13 is arranged, the part between the two adjacent single wires 1 has a larger back, which facilitates the arrangement of the separation groove 1303;

[0106] When the cable single wire 1 needs to be separated, the adjacent single wire 1 can be cut through the separation groove 1303, which facilitates the terminal of the cable head to be connected to different devices, and improves the convenience of application;

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

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

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

[0110] S2, arranging a second wire core 14 on the buffer support 11 and the first wire core 12;

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

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

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

[0114] S6, arranging an outer cladding 13.

[0115] The above only describes the preferred embodiments of the present application and should not be used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A servo control cable, characterized by: The single wire body (1) and the rolling frame (2) are included, wherein, A plurality of the single wire bodies (1) are arranged side by side 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 perpendicular to the first direction; The single wire body (1) includes a buffer support (11), a first core (12) and an outer cladding layer (13), the buffer support (11) is in a strip structure, and an arc-shaped groove (101) is arranged on the side parallel to the first direction, the first core (12) is attached to the arc-shaped groove (101), and the outer cladding layer (13) is in an oblong shape and covers the buffer support (11) and the first core (12); The rolling frame (2) is provided with two, and the two rolling frames (2) hold a plurality of the single wire bodies (1) arranged side by side, and the rolling frames (2) and the single wire bodies (1) are arranged side by side in the first direction; The outer cladding layer (13) has two planes (1301) parallel to the second direction and two arc-shaped surfaces (1302) connected with the two planes (1301); the rolling frame (2) is arranged in close contact with the plane (1301), and the side of the rolling frame (2) away from the plane (1301) is arc-shaped; the cross-sectional line of the arc-shaped side of the rolling frame (2) is tangent to the cross-sectional line of the arc-shaped surface (1302) of the outer cladding layer (13); 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 of the arc plate (21) is an arc-shaped surface; the first plane plate (22) and the second plane plate (23) are connected with one side of the arc plate (21) respectively, the first plane plate (22) is connected with the outer cladding layer (13), and a plurality of notches (201) are formed in the first plane plate (22); the top block (24) is connected with the arc plate (21) and corresponds to the notch (201).

2. The servo-controlled cable of claim 1, wherein: The first core (12) includes an insulation layer (121), a hose (122) and a wire (123), wherein, The inner side of the insulation layer (121) is coaxially arranged with the hose (122), and the insulation layer (121) is attached to the arc-shaped groove (101); The hose (122) is provided with a filler; The wire (123) is provided with a plurality of wires in the gap between the insulation layer (121) and the hose (122).

3. The servo-controlled cable of claim 2, wherein: The single wire body (1) further includes a second core (14), a first winding layer (15), a third core (16) and a second winding layer (17), wherein, The buffer support (11) is provided with two second cores (14) at two sides parallel to the second direction, and the second cores (14) abut against the first core (12); The first winding layer (15) covers the buffer support (11), the first core (12) and the second core (14); The third core (16) abuts against one side of the first winding layer (15) away from the buffer support (11), and presses the first winding layer (15) towards the two second cores (14); The second winding layer (17) covers the buffer support (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 that of the second winding layer (17), and the outer layer (13) covers the outside of the second winding layer (17).

4. The servo-controlled cable of claim 3, wherein: The second core (14) has a diameter 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 core (14) is equal to or less than half 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 core (16) is greater than or equal to 1.5 times the diameter of the second core (14).

5. A servo-controlled cable as claimed in claim 3 or 4, characterised in that: The single wire body (1) further comprises a functional layer (18), the functional layer (18) comprising a shielding layer (181), a spacing layer (182) and an armored layer (183), wherein, The shielding layer (181) covers the outside of the second winding layer (17); The spacing layer (182) covers the outside of the shielding layer (181); The armored layer (183) covers the outside of the spacing layer (182); The outer layer (13) covers the outside of the armored layer (183).

6. The servo-controlled cable of claim 1, wherein: Further comprising a filling glue (3) arranged between two adjacent single wire bodies (1) and adhering to the arc surface (1302).

7. Servo control cable according to any one of claims 1 to 4, characterized in that: The thickness of the outer layer (13) corresponding to the part between two adjacent single wire bodies (1) is 1.5-2 times the thickness of other parts; The outer layer (13) corresponding to the part between two adjacent single wire bodies (1) is provided with a separation groove (1303).

8. A method of making a servo-controlled cable as claimed in claim 3 or 4, characterised in that, The method comprises the following steps: S1, forming the buffer support (11) by extrusion, and arranging the first core (12) on both sides of the buffer support (11); S2, abutting the second core (14) to the buffer support (11) and the first core (12); S3, arranging the first winding layer (15) to fix the buffer support (11) and the first core (12); S4, placing the third core (16) outside the first winding layer (15); S5, arranging the second winding layer (17) to fix the third core (16) and extrude the first winding layer (15); S6, arranging the outer layer (13).

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