Electric wire for industrial robot
By introducing mesh foamed elastomer plastic inner core and multi-layer structure into the wire, the twisting and bending requirements of the robotic arms and drag chains for the wire are solved, and the stable use of the wire on multi-joint robotic arms and ground rails is achieved.
Patent Information
- Application Number
- CN202420544378.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-03-20
AI Technical Summary
Existing wires are difficult to meet the twisting needs of robotic arms and the bending needs of the drag chain at the same time, resulting in easy damage when used on multi-joint robotic arms and ground rails.
Using wire structures including wires, mesh foamed elastomer plastic inner core, soft elastomer plastic inner protective layer, cotton wire layer, shielding layer, non-woven fabric layer and elastic outer sheath, formed by twisting and extrusion technology Multi-layer structure enhances the bending and torsion resistance of wires.
This wire structure can be used on the robotic arms and ground rail for a long time and is not easily damaged. It meets the wire needs of multi-joint robotic arms and improves the bending and torsion resistance of the wire.
Smart Images
Figure CN222337954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electric wire, in particular to an electric wire for an industrial robot. Background Art
[0002] Industry is moving towards automation. For large industrial production workshops, many use robotic arms to replace manual labor. The wires required for multi-joint robotic arms need to meet their torsion requirements. Due to production needs, some workshops currently install robotic arms on ground rails, so that the same robotic arm can control multiple devices. For such robotic arms installed on ground rails, the wires must be connected to the use requirements of both the robotic arm and the ground rail drag chain. The main requirement for the robotic arm wire is torsion resistance, while the main requirement for the drag chain wire is torsion resistance and fatigue resistance. The two are different requirements for wires. Therefore, the wires need to meet the bending requirements of the ultra-long drag chain and the torsion requirements of the robotic arm. At present, there are relatively few products in the market that meet both of these requirements. Utility Model Content
[0003] In order to overcome the above defects, the utility model provides an electric wire for an industrial robot, which has high bending resistance and torsion resistance and can meet the wire use requirements of a robot arm running on a ground rail.
[0004] The utility model adopts the following technical scheme to solve the technical problems: an electric wire for an industrial robot, comprising a conductor, a mesh-shaped foamed elastomeric plastic inner core, an inner protective layer of a soft elastomeric plastic material, a cotton thread layer, a shielding layer, a non-woven fabric layer and an outer elastic sheath, wherein a plurality of conductors are twisted around the outer side of the mesh-shaped foamed elastomeric plastic inner core to form a twisted wire, the inner protective layer of the elastomeric plastic material is tightly coated on the outer side of the twisted wire, the cotton thread layer is wound and coated on the outer side of the inner protective layer of the elastomeric plastic material, a shielding layer with a shielding function is coated on the outer side of the cotton thread layer, a high-strength non-woven fabric is wrapped around the outer side of the shielding layer to form a non-woven fabric layer, and the outer side of the non-woven fabric layer is coated with an outer elastic sheath.
[0005] As a further improvement of the utility model, the conductor includes a conductive core wire and a fluoroplastic tape, at least two conductive core wires are twisted to form a multi-core pre-twisted structure, and the smooth fluoroplastic tape is tightly coated on the outside of the multi-core pre-twisted structure.
[0006] As a further improvement of the present invention, the number of the conductive core wires in the wire is two, three, four or more.
[0007] As a further improvement of the utility model, the conductive core wire includes a conductor, a bulletproof wire and an insulating layer. Multiple conductors and multiple bulletproof wires are twisted to form a conductive twisted body. The bulletproof wires in the conductive twisted body are filled in the gaps of the conductor. The insulating material is extruded onto the outside of the conductive twisted body to form an insulating layer.
[0008] As a further improvement of the present invention, the conductor is a tinned copper wire.
[0009] As a further improvement of the present invention, the diameter of the copper wire is 0.05 mm.
[0010] As a further improvement of the utility model, the insulating material of the insulating layer is a high-strength thermoplastic elastomer.
[0011] As a further improvement of the utility model, the insulating material is extruded and wrapped around the outside of the copper wire by tubular extrusion, and the insulating material is evacuated during the extrusion process so that the insulating layer and the conductor are in a vacuum fitting state.
[0012] As a further improvement of the present invention, when the conductor and the bulletproof wire are twisted, a multi-layer twisted structure is formed by multiple layered twisting.
[0013] As a further improvement of the present invention, the shielding layer is formed on the outside of the cotton thread layer by weaving.
[0014] The beneficial effects of the utility model are as follows: the utility model fills a meshed foamed elastomeric plastic inner core in the center when the wires are twisted, and protects the wires through a soft and highly elastic inner protective layer and a high-strength elastic outer sheath, so that the wires can meet the bending requirements of ultra-long drag chains and the torsion requirements of robotic arms, are not easily damaged when used for a long time on multi-joint robotic arms, and can meet the wire use requirements of robotic arms running on ground rails. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a cross-sectional schematic diagram of the utility model;
[0016] Figure 2 It is a schematic diagram of a conductor cross section of the utility model;
[0017] Figure 3 It is a schematic cross-sectional view of the conductive core wire of the present utility model. DETAILED DESCRIPTION
[0018] Embodiment: An electric wire for an industrial robot comprises a conductor 1, a mesh foamed elastomeric plastic inner core 2, an inner protective layer 3 of a soft elastomeric plastic material, a cotton thread layer 4, a shielding layer 5, a non-woven fabric layer 6 and an elastomeric outer sheath 7. A plurality of conductors 1 are twisted around the outside of the mesh foamed elastomeric plastic 2 to form a twisted wire, the inner protective layer of the elastomeric plastic 2 is tightly coated on the outside of the twisted wire, the cotton thread layer 4 is wrapped around the outside of the inner protective layer of the elastomeric plastic 2, a shielding layer 5 with a shielding function is coated on the outside of the cotton thread layer 4, the outer side of the shielding layer 5 is wrapped with a high-strength non-woven fabric to form a non-woven fabric layer 6, and the outer side of the non-woven fabric layer 6 is coated with an elastomeric outer sheath 7.
[0019] When the conductor 1 is twisted, the conductor 1 needs to be arranged evenly, and a mesh foamed elastomeric plastic inner core 2 is filled in the twisting center to ensure the stability of the structure of the entire wire, and to allow the entire wire to have a certain elastic buffer when the center is squeezed during the bending process. After the entire wire is twisted, a layer of inner sheath 3 made of special soft elastomeric plastic material is pressed and extruded. The pressure makes the arrangement structure of the entire wire very stable, and there will be no displacement between each other. In this way, the wire will not be misaligned in the arrangement structure when it moves on a long-distance ground track. Since the inner sheath is made of special soft elastomeric plastic material, this elastomeric material can protect the pre-twisted structures inside the wire from being squeezed against each other when the wire is in a torsional motion. A denser cotton layer 4 is wrapped around the outside of the soft elastic body, and then a shielding layer 5 is set outside the cotton layer 4 for signal isolation. This cotton layer 4 can effectively protect the shielding layer 5. When the wire is bent, the cotton layer 4 can play a buffering role and reduce the extrusion of the shielding layer 5 and the elastomeric material inside. The shielding layer 5 is wrapped with a high-strength non-woven fabric to wrap the shielding layer 5 and provide preliminary protection for the shielding layer 5. Finally, a high-strength elastic outer sheath 7 is extruded, and the outer sheath is extruded on the non-woven fabric layer 6 by pressurization. The mutual friction between the outer sheath and the shielding is reduced during the bending movement of the wire. The high-strength elastomer selected as the outer sheath has a very strong anti-fatigue effect, so that the entire line is protected during the bending movement without any problems.
[0020] The conductor 1 includes a conductive core wire 11 and a fluoroplastic tape 12. At least two conductive core wires 11 are twisted to form a multi-core pre-twisted structure. The smooth fluoroplastic tape 12 is tightly wrapped around the outside of the multi-core pre-twisted structure. Before the wires are cabled, the core wires are pre-twisted once according to the number and size of each core wire. The ultimate goal is to arrange all the core wires stably and evenly, thereby ensuring the bending and torsion resistance of the entire wire. After the pre-twisting of these core wires is completed, they are wrapped with a very smooth fluoroplastic tape 12 to make the mutual friction between these pre-twisted structures very small.
[0021] The number of the conductive core wires 11 in the wire 1 is two, three, four or more.
[0022] The conductive core wire 11 includes a conductor 111, a bulletproof wire 112 and an insulating layer 113. A plurality of conductors 111 and a plurality of bulletproof wires 112 are twisted to form a conductive twisted body. The bulletproof wires 112 in the conductive twisted body are filled in the gaps of the conductor 111. The insulating material is formed on the outside of the conductive twisted body by extrusion to form the insulating layer 113. The bulletproof wire 112 is filled in the gaps of the conductor 111, which can effectively improve the anti-twisting ability of the conductor 111 and protect the copper wire from being easily broken.
[0023] The conductor 111 is a tinned copper wire. The outer layer of the copper wire is tinned to facilitate subsequent welding of the wire.
[0024] The copper wire has a diameter of 0.05 mm. This extremely fine copper wire can effectively improve the bending resistance of the entire wire.
[0025] The insulating material of the insulating layer 113 is a high-strength thermoplastic elastomer. The insulating material uses a high-strength thermoplastic elastomer, which has very strong fatigue resistance and ensures that it will not be damaged even in long-term use.
[0026] The insulating material is extruded and wrapped around the outside of the copper wire by tubular extrusion. During the extrusion process, the insulating material is evacuated so that the insulating layer 113 and the conductor 111 are in a vacuum-fitting state. During the extrusion process of the insulating material on the copper wire, tubular extrusion is adopted and the copper wire is evacuated at the same time. The insulating material is very tightly and evenly fitted on the outside of the conductor 111 to avoid relative sliding and wear between the two during use.
[0027] When the conductor 111 and the bulletproof wire 112 are twisted, a multi-layer twisted structure is formed by multiple layer twisting. Such multiple layer twisting can also effectively improve the ability of the conductor 111 to withstand the bending of the drag chain. This structure ensures that the copper wire can meet the requirements of torsion and drag chain bending at the same time.
[0028] The shielding layer 5 is formed on the outside of the cotton thread layer 4 by weaving.
Claims
1. An electric wire for an industrial robot, characterized in that: The invention comprises a conductor (1), a mesh foamed elastomeric plastic inner core (2), an inner protective layer (3) made of a soft elastomeric plastic material, a cotton thread layer (4), a shielding layer (5), a non-woven fabric layer (6) and an outer elastomeric sheath (7), wherein a plurality of conductors are twisted around the outer side of the mesh foamed elastomeric plastic inner core to form a twisted wire, the inner protective layer made of the elastomeric plastic material is tightly coated on the outer side of the twisted wire, the cotton thread layer is wrapped around the outer side of the inner protective layer made of the elastomeric plastic material, a shielding layer with a shielding function is coated on the outer side of the cotton thread layer, a high-strength non-woven fabric is wrapped around the outer side of the shielding layer to form a non-woven fabric layer, and the outer side of the non-woven fabric layer is coated with an outer elastomeric sheath.
2. The electric wire for industrial robots according to claim 1, characterized in that: The conductor comprises a conductive core wire (11) and a fluoroplastic tape (12), wherein at least two conductive core wires are twisted to form a multi-core pre-twisted structure, and the smooth fluoroplastic tape is tightly coated on the outside of the multi-core pre-twisted structure.
3. The electric wire for industrial robots according to claim 2, characterized in that: The number of conductive core wires in the wire is two, three or four.
4. The electric wire for industrial robots according to claim 2, characterized in that: The conductive core wire comprises a conductor (111), a bulletproof wire (112) and an insulating layer (113); a plurality of conductors and a plurality of bulletproof wires are twisted together to form a conductive twisted body; each bulletproof wire in the conductive twisted body is filled in a gap in the conductor; and an insulating material is extruded and formed on the outside of the conductive twisted body to form an insulating layer.
5. The electric wire for industrial robots according to claim 4, characterized in that: The conductor is a tinned copper wire.
6. The electric wire for industrial robots according to claim 5, characterized in that: The copper wire has a diameter of 0.05 mm.
7. The electric wire for industrial robots according to claim 4, characterized in that: The insulating material of the insulating layer is a high-strength thermoplastic elastomer.
8. The electric wire for industrial robots according to claim 4, characterized in that: The insulating material is extruded and wrapped around the outside of the copper wire in a tubular extrusion manner, and the insulating material is evacuated during the extrusion process so that the insulating layer and the conductor are in a vacuum-fitted state.
9. The electric wire for industrial robots according to claim 4, characterized in that: When the conductor and the bulletproof wire are twisted, a multi-layer twisted structure is formed by multiple layered twisting.
10. The electric wire for industrial robots according to claim 1, characterized in that: The shielding layer is formed on the outer side of the cotton thread layer by weaving.