Glued steel wire twisted sleeve

Abstract

The utility model relates to a gummed steel wire twisted casing pipe, which belongs to the field of twisted casing pipes and comprises a lining pipe, a twisted steel wire layer and a plastic-coated layer, the lining pipe, the twisted steel wire layer and the plastic-coated layer are distributed from inside to outside, and the twisted steel wire layer is formed by twisting a plurality of steel wires; the steel wire comprises a steel wire core body and a gluing layer coated on the outer surface of the steel wire core body. The rubber coating layer is coated on the surface of the steel wire core body, so that the binding force between the plastic coating layer and the twisted steel wire layer is effectively enhanced, the slippage risk of the plastic coating layer is greatly reduced, the quality and the stability of a product are improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a rubber-coated steel wire twisted casing, belonging to the field of twisted casings. Background Art

[0002] Lightweighting vehicles is one of the development goals of my country's automotive industry. The control cable assembly is a key component of the vehicle's control system, enabling steering, speed control, braking, clutching, acceleration, and other actions. The casing, one of the materials used in the control cable assembly, currently consists of a plastic inner liner, a twisted steel wire layer, and an outer coating. The densely packed twisted steel wires account for an average of approximately 80% of the casing's total weight.

[0003] Chinese utility model patent publication number CN211145082U discloses a lightweight casing comprising an inner liner, a twisted steel wire layer, and a plastic coating layer. The outer surface of the inner liner surrounds the twisted steel wire layer, and the plastic coating layer is disposed on the outer surface of the twisted steel wire layer. The twisted steel wire layer comprises first and second steel wires twisted at intervals, wherein the diameter of the second steel wire is smaller than that of the first steel wire. The second steel wire comprises a steel wire body having a plurality of regularly arranged curved protrusions, each of which has a wavy structure. Each curved protrusion includes at least a first protrusion disposed toward one side of the steel wire body and a second protrusion disposed toward the other side of the steel wire body. The curved protrusions leave a gap between the first and second steel wires. The plastic coating layer penetrates the gap between the second steel wires and connects to the inner liner. This utility model provides a lightweight casing with the advantages of reducing costs and ensuring structural strength. However, in the prior art, during the twisting and plastic coating process of the sleeve, the bonding strength between the plastic coating layer and the steel wire is often not ideal, and the plastic coating layer is prone to slippage, causing the end injection molded parts or riveted parts to fall off, affecting the quality and service life of the product.

[0004] Therefore, it is necessary to have a rubber-coated steel wire twisted casing to improve the bonding strength between the plastic coating layer and the steel wire. Summary of the Invention

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, a rubber-coated steel wire twisted casing is provided which improves the bonding strength between the plastic coating layer and the steel wire.

[0006] The technical solution adopted by the utility model to solve the above problems is: a rubber-coated steel wire twisted casing, comprising an inner lining tube, a twisted steel wire layer and a plastic coating layer, wherein the inner lining tube, the twisted steel wire layer and the plastic coating layer are arranged from the inside to the outside, and the twisted steel wire layer is twisted from multiple steel wires;

[0007] The steel wire comprises a steel wire core and a rubber coating layer coated on the outer surface of the steel wire core.

[0008] Preferably, the surface of the steel wire core is pretreated by chemical degreasing and pickling to remove rust.

[0009] Preferably, the diameter of the steel wire core is 0.5 mm to 0.7 mm.

[0010] Preferably, the thickness of the rubber coating layer is 0.05 mm to 0.06 mm.

[0011] Preferably, the plurality of steel wires are distributed symmetrically about the center of the liner pipe.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The utility model discloses a rubber-coated steel wire twisted casing, which effectively enhances the bonding force between the plastic coating layer and the twisted steel wire layer by coating the rubber coating layer on the surface of the steel wire core, greatly reduces the risk of slippage of the plastic coating layer, improves the quality and stability of the product, and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a rubber-coated steel wire twisted casing of the utility model;

[0015] Figure 2 Schematic diagram of the structure of the twisted steel wire layer;

[0016] Figure 3 Schematic diagram of the steel wire structure.

[0017] in:

[0018] Lining pipe 1, twisted steel wire layer 2, plastic coating layer 3;

[0019] Steel wire 21;

[0020] Steel wire core 211 and rubber coating layer 212 . DETAILED DESCRIPTION

[0021] like Figure 1-3 As shown, a rubber-coated steel wire twisted casing comprises an inner liner 1, a twisted steel wire layer 2 and a plastic coating layer 3, wherein the inner liner 1, the twisted steel wire layer 2 and the plastic coating layer 3 are arranged from the inside to the outside;

[0022] The twisted steel wire layer 2 is formed by twisting a plurality of steel wires 21, and the plurality of steel wires 21 are distributed symmetrically about the center of the liner pipe 1;

[0023] The steel wire 21 includes a steel wire core 211 and a rubber coating layer 212 coated on the outer surface of the steel wire core 211. The surface of the steel wire core 211 is pre-treated by chemical degreasing and pickling.

[0024] The diameter of the steel wire core 211 is 0.5 mm to 0.7 mm, and the thickness of the rubber coating layer 212 is 0.05 mm to 0.06 mm;

[0025] Example 1: A steel wire core 211 with a diameter of 0.5 mm is selected. First, its surface is pretreated with chemical degreasing and pickling to remove impurities such as oil, rust, etc. Then, a glue coating device is used to evenly coat the glue in a molten state after heating on the surface of the steel wire core 211 to form a glue layer 212 on the surface of the steel wire core 211. The thickness of the glue layer 212 is controlled to be 0.05 mm. The steel wire core 211 coated with the glue layer 212 is formed as a single steel wire 21 as a whole. Then, multiple steel wires 21 are twisted on the outer surface of the inner liner 1. The multiple steel wires 21 are formed as a whole into a twisted steel wire layer 2. Finally, the outer surface of the twisted steel wire layer 2 is plastic-coated to form a plastic coating layer 3. The pull-out force between the plastic coating layer 3 and the twisted steel wire layer 2 is tested. Compared with the twisted steel wire layer 2 without glue coating, the pull-out force is increased by more than 50%;

[0026] Example 2: A steel wire core 211 with a diameter of 0.7 mm is selected. First, its surface is pretreated with chemical degreasing and pickling to remove impurities such as oil, rust, etc. Then, a glue coating device is used to evenly coat the glue in a molten state after heating on the surface of the steel wire core 211 to form a glue layer 212 on the surface of the steel wire core 211. The thickness of the glue layer 212 is controlled to be 0.06 mm. The steel wire core 211 coated with the glue layer 212 is formed as a single steel wire 21 as a whole. Then, multiple steel wires 21 are twisted on the outer surface of the inner liner 1. The multiple steel wires 21 are formed as a whole into a twisted steel wire layer 2. Finally, the outer surface of the twisted steel wire layer 2 is plastic-coated to form a plastic coating layer 3. The pull-out force between the plastic coating layer 3 and the twisted steel wire layer 2 is tested. Compared with the twisted steel wire layer 2 without glue coating, the pull-out force is increased by more than 55%;

[0027] In summary, by coating the rubber coating layer 212 on the surface of the steel wire core 211, the bonding force between the plastic coating layer 3 and the twisted steel wire layer 2 is effectively enhanced, the risk of slippage of the plastic coating layer 3 is greatly reduced, the quality and stability of the product are improved, and the service life is extended.

[0028] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. A rubber-coated steel wire (21) twisted casing, comprising an inner lining tube (1), a twisted steel wire layer (2) and a plastic coating layer (3), wherein the inner lining tube (1), the twisted steel wire layer (2) and the plastic coating layer (3) are arranged from the inside to the outside, and characterized in that: The twisted steel wire layer (2) is formed by twisting a plurality of steel wires (21); The steel wire (21) comprises a steel wire core (211) and a rubber coating layer (212) coated on the outer surface of the steel wire core (211).

2. A rubber-coated steel wire (21) twisted sleeve according to claim 1, characterized in that: The surface of the steel wire core (211) is pre-treated by chemical degreasing and pickling to remove rust.

3. The rubber-coated steel wire (21) twisted sleeve according to claim 1, characterized in that: The steel wire core (211) has a diameter of 0.5 mm to 0.7 mm.

4. A rubber-coated steel wire (21) twisted sleeve according to claim 3, characterized in that: The thickness of the adhesive coating layer (212) is 0.05 mm to 0.06 mm.

5. The rubber-coated steel wire (21) twisted sleeve according to claim 1, characterized in that: The plurality of steel wires (21) are distributed centrally and symmetrically about the inner lining tube (1).

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