Cable sleeve rubber coating extrusion molding device

Abstract

The utility model discloses an inhaul cable sleeve rubber coating extrusion molding device which comprises an extrusion molding machine and an extrusion molding die, a discharge port of the extrusion molding machine is provided with an adapter, a plurality of connecting pipes are connected between the adapter and the extrusion molding die, and the upstream and the downstream of the extrusion molding die are respectively provided with a V-shaped conveyor and a conveying roller which are used for conveying inhaul cable sleeves; the V-shaped conveyor comprises two sets of inclined and symmetrical plane conveying belts, tensioning rollers and supporting rollers, the tensioning rollers and the supporting rollers are arranged in the plane conveying belts, the tensioning rollers are located at the two ends in the plane conveying belts, the supporting rollers are located between the tensioning rollers at the two ends in the plane conveying belts, and transmission gears meshed with each other are installed at the lower ends of the two sets of tensioning rollers. According to the cable sleeve conveying device, the cable sleeve is conveyed in a pushing mode instead of a traction conveying mode, so that the spiral spacing of the stainless steel armored pipe is not increased, the PVC outer sleeve is not deformed, and the structural strength, the toughness and the appearance quality of the cable sleeve are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cable sleeve production technology, specifically to a cable sleeve overmolding extrusion device. Background Technology

[0002] The cable sheath consists of a PE inner liner before extrusion and a stainless steel armored tube fitted over the PE inner liner. The PE inner liner reduces the friction of the internal cable pull wire. The stainless steel armored tube is formed by spirally winding flat steel. The stainless steel armored tube is used to increase the structural strength and toughness of the entire cable sheath. Extrusion is used to extrude a PVC outer sheath onto the surface of the stainless steel armored tube to enhance its corrosion resistance and provide protection. The cable sheath extrusion device is used to extrude a PVC outer sheath onto the surface of the stainless steel armored tube of the cable sheath.

[0003] In the process of extruding and coating cable sleeves, the existing technology uses traction to pull the extruded and coated cable sleeves for movement and transportation. The extrusion and coating and the movement and transportation are carried out simultaneously. However, since the PVC outer sleeve on the surface of the extruded sleeve has not been fully cured and shaped after extrusion and coating, pulling and traction too early will cause the spiral spacing of the stainless steel armored tube to increase and become loose, resulting in a decrease in strength and toughness. On the other hand, it will cause the PVC outer sleeve to deform, affecting the quality. There are shortcomings that urgently need to be improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cable sleeve coating extrusion device, which solves the problem that existing cable sleeve coating extrusion devices, which use traction to move and transport the cable sleeve, easily cause a decrease in the strength and toughness of the cable sleeve and damage to its shape, thus affecting its quality.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A cable sleeve extrusion device includes an extruder and an extrusion mold. The outlet of the extruder is equipped with an adapter. Multiple connecting pipes connect the adapter to the extrusion mold. A V-shaped conveyor and a conveying roller for conveying the cable sleeve are respectively installed upstream and downstream of the extrusion mold.

[0007] The V-shaped conveyor comprises two sets of inclined and symmetrical planar conveyor belts, as well as tension rollers and support rollers inside the planar conveyor belts. The tension rollers are located at both ends inside the planar conveyor belts, and the support rollers are located between the tension rollers at both ends inside the planar conveyor belts. The lower ends of the two sets of tension rollers are equipped with meshing transmission gears.

[0008] The cable sleeve is located in a V-shaped groove formed by two sets of flat conveyor belts, and multiple pressure rollers are installed above the V-shaped conveyor to press on the cable sleeve.

[0009] Preferably, there are three connecting pipes, and the three connecting pipes are installed at equal intervals on the circumference of the extrusion mold. The three connecting pipes are arranged in a ring array on the side of the circular adapter with the center of the adapter as the array center.

[0010] Preferably, a throttle valve is installed on each of the three connecting pipes.

[0011] Preferably, the conveying roller is a circular roller with circular grooves on its surface.

[0012] Preferably, the planar conveyor belt is a vulcanized rubber belt.

[0013] Preferably, the pressure rollers are equidistantly arranged along the cable sleeve, and a soft silicone strip is commonly fitted around the outside of the multiple pressure rollers, pressing against the surface of the cable sleeve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention utilizes a V-shaped conveyor and pressure rollers upstream of the extrusion mold to clamp and transport the stainless steel armored tube and its internal PE liner of the cable sleeve. Instead of a traction-based conveying method, the cable sleeve is transported by pushing. This avoids increasing the spiral spacing of the stainless steel armored tube and deforming the PVC outer sleeve, thus ensuring the structural strength, toughness, and appearance quality of the cable sleeve. It solves the problem that existing cable sleeve extrusion devices, which use traction to move and transport the cable sleeve, easily cause a decrease in strength and toughness, and damage to its shape, thus affecting quality. Attached Figure Description

[0016] Figure 1 This is a top view of the overall structure of this utility model;

[0017] Figure 2 This is a top view of a partial structure of the extrusion mold of this utility model at the corresponding position;

[0018] Figure 3 This is a front view of the extruder and extrusion die of this utility model;

[0019] Figure 4 This is a front view of the adapter and extrusion mold of this utility model;

[0020] Figure 5 This is a left view of the adapter of this utility model;

[0021] Figure 6 This is a partial front view of the V-shaped conveyor of this utility model.

[0022] In the diagram: 1. Extruder; 2. Extrusion mold; 3. Adapter; 4. Connecting pipe; 5. Cable sleeve; 51. PE inner liner pipe; 52. Stainless steel armored pipe; 53. PVC outer sleeve; 6. V-type conveyor; 61. Flat conveyor belt; 62. Tension roller; 63. Support roller; 64. Drive gear; 7. Conveyor roller; 8. Pressure roller; 9. Throttling valve; 10. Soft silicone belt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-6 As shown, this utility model provides a technical solution: a cable sleeve rubber extrusion device, including an extruder 1 and an extrusion mold 2. An adapter 3 is installed at the discharge port of the extruder 1. Multiple connecting pipes 4 are connected between the adapter 3 and the extrusion mold 2. There are three connecting pipes 4, and the three connecting pipes 4 are installed at equal intervals on the circumference of the extrusion mold 2. The three connecting pipes 4 are arranged in a ring array on the side of the circular adapter 3 with the center of the adapter 3 as the array center, so that the material feeding in the extrusion mold 2 is uniform. Each of the three connecting pipes 4 is equipped with a throttle valve 9, which can adjust the feeding speed separately.

[0025] The upstream and downstream of the extrusion mold 2 are respectively provided with a V-shaped conveyor 6 and a conveyor roller 7 for conveying the cable sleeve 5. The conveyor roller 7 is selectively equipped with a drive mechanism. The conveyor roller 7 is a round roller with a circular groove on its surface. The cable sleeve 5 includes a PE inner liner 51 before extrusion and a stainless steel armored tube 52 sleeved on the outside of the PE inner liner 51. Extrusion is to extrude a PVC outer sleeve 53 onto the surface of the stainless steel armored tube 52. The size of the circular groove of the conveyor roller 7 is adapted to the shape and size of the PVC outer sleeve 53.

[0026] The V-type conveyor 6 comprises two sets of inclined and symmetrical flat conveyor belts 61, as well as tension rollers 62 and support rollers 63 inside the flat conveyor belts 61. The tension rollers 62 are located at both ends inside the flat conveyor belts 61. The flat conveyor belts 61 are vulcanized rubber belts. The support rollers 63 are located between the tension rollers 62 at both ends inside the flat conveyor belts 61. The lower ends of the two sets of tension rollers 62 are equipped with meshing transmission gears 64, and one of the tension rollers 62 is equipped with a drive mechanism.

[0027] The cable sleeve 5 is located in a V-shaped groove formed by two sets of flat conveyor belts 61. Above the V-shaped conveyor 6, there are multiple pressure rollers 8 pressing on the cable sleeve 5. The pressure rollers 8 can be equipped with a drive mechanism or not. The pressure rollers 8 are equidistantly arranged along the cable sleeve 5. The outside of the multiple pressure rollers 8 is covered with a soft silicone strip 10 pressing on the surface of the cable sleeve 5. The drive mechanism is a speed-regulating motor.

[0028] Working principle:

[0029] This utility model utilizes a V-shaped conveyor 6 and a pressure roller 8 to clamp and transport the stainless steel armored tube 52 and its internal PE inner liner tube 51 of the cable sleeve 5. The cable sleeve 5 is transported by pushing instead of traction, which not only avoids increasing the spiral spacing of the stainless steel armored tube 52, but also avoids deformation of the PVC outer tube 53, thereby ensuring the structural strength, toughness and appearance quality of the cable sleeve 5.

[0030] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable sleeve overmolding extrusion apparatus, comprising an extruder (1) and an extrusion mold (2), characterized in that: The extruder (1) is equipped with an adapter (3) at its discharge port. Multiple connecting pipes (4) are connected between the adapter (3) and the extrusion mold (2). The upstream and downstream of the extrusion mold (2) are respectively equipped with a V-shaped conveyor (6) and a conveying roller (7) for conveying the cable sleeve (5). The V-shaped conveyor (6) comprises two sets of inclined and symmetrical planar conveyor belts (61) and tension rollers (62) and support rollers (63) inside the planar conveyor belts (61). The tension rollers (62) are located at both ends inside the planar conveyor belts (61), and the support rollers (63) are located between the tension rollers (62) at both ends inside the planar conveyor belts (61). The lower ends of the two sets of tension rollers (62) are equipped with meshing transmission gears (64). The cable sleeve (5) is located in a V-shaped groove formed by two sets of flat conveyor belts (61), and multiple pressure rollers (8) are arranged above the V-shaped conveyor (6) pressing on the cable sleeve (5).

2. The cable sleeve extrusion device according to claim 1, characterized in that: There are three connecting pipes (4), and the three connecting pipes (4) are installed at equal intervals on the circumference of the extrusion mold (2). The three connecting pipes (4) are arranged in a ring array on the side of the circular adapter (3) with the center of the adapter (3) as the array center.

3. The cable sleeve extrusion device according to claim 2, characterized in that: Throttling valves (9) are installed on all three connecting pipes (4).

4. The cable sleeve overmolding extrusion device according to claim 1, characterized in that: The conveying roller (7) is a circular roller with circular grooves on its surface.

5. The cable sleeve extrusion device according to claim 1, characterized in that: The flat conveyor belt (61) is a vulcanized rubber belt.

6. The cable sleeve overmolding extrusion device according to claim 1, characterized in that: The pressure rollers (8) are equidistantly arranged along the cable sleeve (5), and a soft silicone strip (10) is fitted on the outside of the multiple pressure rollers (8) and pressed against the surface of the cable sleeve (5).

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