Electronic ruler cable

Abstract

The utility model discloses a kind of electronic ruler cable, including signal line group, the outer sheath of shielding layer that is successively sleeved in signal line group, signal line group includes multiple wires, and multiple wires are stranded, it is characterized in that, cable further includes graphene tape and middle sheath, graphene tape and middle sheath are arranged between signal line group and shielding layer, graphene tape is arranged on the radial outer surface of middle sheath, graphene tape and shielding layer cooperate to improve the shielding effectiveness and anti-interference ability of cable, middle sheath is arranged on the outer surface of signal line group, to improve the bending strength of cable.The utility model can improve the bending resistance of cable, protect the insulating layer of cable, improve the life of cable, ensure the anti-interference ability of cable.

Description

Technical Field

[0001] This utility model relates to the technical field of cables, and in particular to a cable for electronic rulers. Background Technology

[0002] Electronic ruler cables, also known as linear displacement sensor cables, are crucial signal transmission components for precision displacement sensors and are widely used in high-precision motion control fields such as CNC machine tools and automated production lines. In the cable carrier system of CNC machine tools, this cable needs to reciprocate with moving parts at high frequency and over long strokes, and its performance directly affects the stability of the displacement measurement signal and the system control accuracy.

[0003] However, during the long-term radial reciprocating bending motion of the cable, the insulation layer in the bending area undergoes local hardening and cracking due to stress concentration, resulting in insulation layer damage and affecting the normal signal transmission of the cable. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a cable for electronic rulers that can improve the cable's bending resistance, protect the cable's insulation layer, increase the cable's lifespan, and ensure the cable's anti-interference capability.

[0005] An electronic ruler cable according to an embodiment of the present invention includes a signal wire group and an outer sheath sequentially sleeved on the shielding layer of the signal wire group. The signal wire group includes multiple conductors twisted together. The cable further includes a graphene wrapping tape and a middle sheath, which are disposed between the signal wire group and the shielding layer. The graphene wrapping tape is disposed on the radial outer surface of the middle sheath. The graphene wrapping tape and the shielding layer work together to improve the shielding effectiveness and anti-interference capability of the cable. The middle sheath is disposed on the outer surface of the signal wire group to improve the bending strength of the cable.

[0006] An electronic ruler cable according to an embodiment of the present invention has at least the following beneficial effects:

[0007] 1. This utility model provides radial support to the signal cable group by setting a middle sheath that directly wraps around the signal cable group. The middle sheath also provides additional insulation and protection, and disperses radial reciprocating bending stress, thereby improving the cable's bending resistance, reducing the risk of local hardening and cracking of the conductor's insulation layer, and increasing the cable's service life and safety.

[0008] 2. This utility model improves the high-frequency shielding effectiveness of the cable by setting graphene wrapping tape, and the shielding layer can be used for low-frequency shielding, thereby enhancing the anti-interference capability of the cable in different frequency bands and ensuring stable signal transmission of the cable.

[0009] 3. By setting a middle sheath and graphene wrapping tape, this utility model can provide the cable with bending resistance. Furthermore, by using the middle sheath and graphene wrapping tape to separate the signal line group and the shielding layer, it prevents the shielding layer conductor from puncturing the insulation layer and protects the cable insulation layer from mechanical damage.

[0010] According to an embodiment of the present invention, an electronic ruler cable is provided, wherein cotton thread is filled between the plurality of conductors and the middle sheath, and the cotton thread is used to improve the tensile strength and bending strength of the cable.

[0011] According to an embodiment of the present invention, an electronic ruler cable is provided, wherein the middle sheath and the outer sheath are made of PUR or modified PVC.

[0012] According to an embodiment of the present invention, an electronic ruler cable is provided, wherein the graphene wrapping has a thickness of 40 micrometers.

[0013] According to an embodiment of the present invention, an electronic ruler cable is provided, wherein the conductor includes a conductor and an insulation layer disposed on the outer surface of the conductor, and the insulation layer is made of XLPE, special TPE or modified PVC.

[0014] According to an embodiment of the present invention, an electronic ruler cable is provided, wherein the conductor is made of tin-plated copper stranded together, and the diameter of the tin-plated copper is less than or equal to 0.12 mm.

[0015] According to an embodiment of the present invention, an electronic ruler cable has a strand pitch of the plurality of conductors that is less than 18 times the outer diameter of the stranded plurality of conductors, and a twist rate of 60%.

[0016] According to an embodiment of the present invention, an electronic ruler cable is provided, wherein the shielding layer is woven from tin-plated copper wire, and the shielding density of the shielding layer is above 80%.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an electronic ruler cable according to an embodiment of the present invention.

[0020] Attached reference numerals: 100-signal line group, 110-shielding layer, 120-outer sheath, 130-conductor, 140-middle sheath, 150-graphene wrapping tape, 160-cotton thread, 170-conductor, 180-insulation layer. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following description, in conjunction with the accompanying drawings, describes a cable for an electronic ruler according to an embodiment of the present invention.

[0026] Reference Figure 1 The present invention aims to provide an embodiment of a cable for an electronic ruler.

[0027] An embodiment of the present invention provides a cable for an electronic ruler, comprising a signal line group 100 and an outer sheath 120 of a shielding layer 110 sequentially sleeved on the signal line group 100. The signal line group 100 includes multiple conductors 130, which are twisted together.

[0028] Furthermore, the cable also includes a graphene wrapping tape 150 and an inner sheath 140. The graphene wrapping tape 150 and the inner sheath 140 are disposed between the signal line group 100 and the shielding layer 110. The graphene wrapping tape 150 is disposed on the radial outer surface of the inner sheath 140. The graphene wrapping tape 150 and the shielding layer 110 work together to improve the shielding effectiveness and anti-interference capability of the cable. The inner sheath 140 is disposed on the outer surface of the signal line group 100 to improve the bending strength of the cable.

[0029] It is understood that by setting the middle sheath 140, the signal line group 100 is directly wrapped by the middle sheath 140, which provides radial support force to the signal line group 100. Moreover, the middle sheath 140 can provide additional insulation and protection, and disperse radial reciprocating bending stress, improve the bending resistance of the cable, reduce the risk of local hardening and cracking of the insulation layer 180 of the conductor 130, and increase the service life and safety of the cable.

[0030] Furthermore, by setting up the graphene wrapping tape 150, this utility model improves the high-frequency shielding efficiency of the cable, and the shielding layer 110 can be used for low-frequency shielding, thereby enhancing the anti-interference capability of the cable in different frequency bands and ensuring stable signal transmission of the cable.

[0031] Furthermore, by setting the middle sheath 140 and the graphene wrapping tape 150, the middle sheath 140 can provide the cable with an anti-bending effect. In addition, the middle sheath 140 and the graphene wrapping tape 150 separate the signal line group 100 and the shielding layer 110, preventing the conductor 170 of the shielding layer 110 from piercing the insulation layer 180, and protecting the insulation layer 180 of the cable from mechanical damage.

[0032] In some embodiments of this utility model, cotton thread 160 is filled between multiple conductors 130 and the middle sheath 140. The cotton thread 160 is used to improve the tensile strength and bending strength of the cable.

[0033] It is understandable that by using cotton thread 160 to fill the gap between multiple conductors 130 and the middle sheath 140, the frictional energy of micro-displacement between conductors 130 is absorbed, the wear on the surface of the insulation layer 180 of conductor 170 is reduced, and the overall tensile strength and radial flattening resistance of the cable are improved.

[0034] In some embodiments of this utility model, the materials of the middle sheath 140 and the outer sheath 120 are PUR or modified PVC.

[0035] It should be noted that PUR material is polyurethane, which has excellent elasticity, abrasion resistance, and chemical resistance. PVC material is polyvinyl chloride, and modified PVC has a balanced bending stiffness and flexibility. PUR or modified PVC can be selected according to design requirements as the material for the 140 inner sheath and 120 outer sheath in electronic ruler cables used in cable chain systems.

[0036] In some embodiments of this invention, the thickness of the graphene tape 150 is 40 micrometers.

[0037] Understandably, designing the thickness of the graphene tape 150 to be 40 micrometers allows the surface resistance of the graphene tape 150 to be below 0.05 ohms, forming a dense conductive network to achieve high-frequency electromagnetic shielding.

[0038] In some embodiments of this utility model, the wire 130 includes a conductor 170 and an insulating layer 180 disposed on the outer surface of the conductor 170. The insulating layer 180 is made of XLPE, special TPE or modified PVC.

[0039] It should be noted that XLPE, or cross-linked polyethylene, has high insulation resistance and dielectric strength, making it suitable as the insulation layer for conductor 130 (180). TPE, or thermoplastic elastomer, possesses excellent elasticity and flexibility, and its dielectric strength meets requirements. PVC, or polyvinyl chloride, has high insulation resistance and voltage withstand capability. Therefore, XLPE or special TPE can be selected as the insulation layer material for 180 according to design needs.

[0040] In some embodiments of this utility model, the conductor 170 is made of tin-plated copper stranded together, and the diameter of the tin-plated copper is less than or equal to 0.12 mm.

[0041] It should be noted that tin-plated copper with a diameter of 0.1 mm or less has a small diameter, which can improve the bending flexibility of the cable, and the tin plating layer prevents copper oxidation and ensures long-term contact resistance stability.

[0042] In some embodiments of this utility model, the twist pitch of the multiple conductors 130 is less than 18 times the outer diameter of the stranded multiple conductors 130, and the untwisting is 60%.

[0043] It should be noted that the twist pitch of the multiple conductors 130 is precisely controlled at 50±5mm to ensure that the conductors 130 are subjected to uniform force. In addition, the multiple conductors 130 adopt a de-twisting stranding process, and de-twisting by 60% can reduce the residual torque of the conductor 170.

[0044] In some embodiments of this utility model, the shielding layer 110 is woven from tin-plated copper wire, and the shielding density of the shielding layer 110 is more than 80%, thus enabling the cable to resist low-frequency magnetic field interference.

[0045] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cable for an electronic ruler, comprising a signal wire assembly (100) and an outer sheath (120) of a shielding layer (110) sequentially sleeved on the signal wire assembly (100), wherein the signal wire assembly (100) comprises multiple conductors (130) twisted together, characterized in that, The cable further includes a graphene wrapping tape (150) and a middle sheath (140). The graphene wrapping tape (150) and the middle sheath (140) are disposed between the signal line group (100) and the shielding layer (110). The graphene wrapping tape (150) is disposed on the radial outer surface of the middle sheath (140). The graphene wrapping tape (150) and the shielding layer (110) work together to improve the shielding effectiveness and anti-interference capability of the cable. The middle sheath (140) is disposed on the outer surface of the signal line group (100) to improve the bending strength of the cable.

2. The cable for an electronic ruler according to claim 1, characterized in that, A cotton thread (160) is filled between the multiple conductors (130) and the middle sheath (140), the cotton thread (160) being used to improve the tensile strength and bending strength of the cable.

3. The cable for an electronic ruler according to claim 1, characterized in that, The materials of the middle sheath (140) and the outer sheath (120) are PUR or modified PVC.

4. The cable for an electronic ruler according to claim 1, characterized in that, The thickness of the graphene wrapper (150) is 40 micrometers.

5. The cable for an electronic ruler according to claim 1, characterized in that, The wire (130) includes a conductor (170) and an insulating layer (180) disposed on the outer surface of the conductor (170), wherein the insulating layer (180) is made of XLPE, special TPE or modified PVC.

6. The cable for an electronic ruler according to claim 5, characterized in that, The conductor (170) is made of tin-plated copper stranded together, the diameter of which is less than or equal to 0.12 mm.

7. The cable for an electronic ruler according to claim 5, characterized in that, The twist pitch of the plurality of said conductors (130) is less than 18 times the outer diameter of the stranded plurality of said conductors (130), and the untwisting is 60%.

8. The cable for an electronic ruler according to claim 1, characterized in that, The shielding layer (110) is woven from tin-plated copper wire, and the shielding density of the shielding layer (110) is above 80%.

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