Cable sheath extrusion molding die

Abstract

The utility model provides a cable sheath extrusion molding die, which is used in the field of cable processing. The main points of its technical solution are: it comprises an inner die and an outer die, the outer die is provided with a material accumulation slope which is arranged around the die opening and is arranged at an acute angle to the middle opening of the outer die on one side of the wire core introduced from the die opening; it also comprises: an air blowing device, which is arranged in the extrusion direction of the cable and blows air in the opposite direction of the cable to promote the transfer of accumulated material on the material accumulation slope; the technical effect is: it can avoid damage to the cable in the process of clearing the accumulated material.

Description

Technical Field

[0001] The utility model relates to the field of cable processing, in particular to a cable sheath extrusion molding die. Background Art

[0002] In the existing production process, the outer sheath of the charging cable is extruded at high temperature from thermoplastic polyurethane elastomer.

[0003] like Figure 1 As shown, a currently used mold includes an inner mold 1 and an outer mold 2. The wire core 4 passes through the middle openings of the inner mold 1 and the outer mold 2. The thermoplastic polyurethane elastomer flows into the opening from the fluid channel 9 between the inner mold 1 and the outer mold 2 and is extruded integrally with the wire core 4.

[0004] At the moment of extrusion from the die, the outer sheath will expand a small amount due to the instantaneous loss of the restriction of the die. The expanded part of the outer sheath will come into contact with the die opening 3 of the die, and some raw materials will remain at the die opening 3 of the die. The longer the use time, the more material will accumulate at the die opening 3. When there is too much material accumulation, the accumulated material will flow back to the outer surface of the cable, causing bulges to form on the outer surface of the cable, resulting in poor production.

[0005] The current solution is for operators to use tweezers to remove the accumulated material at the die mouth 3. During this process, the surface of the cable may be scratched due to the operator's technical skills, causing losses to production. The inventors of the present invention aim to provide a solution to this problem. Utility Model Content

[0006] The utility model aims to provide a cable sheath extrusion molding die, which has the advantage of being able to avoid damage to the cable during the process of clearing accumulated materials.

[0007] To achieve the above-mentioned purpose and other related purposes, the utility model provides the following technical solutions: a cable sheath extrusion molding die, comprising an inner die and an outer die, the outer die being provided with a material accumulation slope arranged around the die opening, and being arranged at an acute angle to the middle opening of the outer die from the die opening toward the wire core; and further comprising:

[0008] The air blowing device is arranged in the extrusion direction of the cable and blows air in the opposite direction of the cable to promote the transfer of the accumulated materials on the accumulated material slope.

[0009] Through the above technical scheme, the wire core passes through the mold and is extruded from the die mouth together with the outer sheath, and part of the raw material on the outer sheath remains on the material accumulation slope. When the residual raw material continues to increase, the accumulated material generated earlier will move along the material accumulation slope under the push of the accumulated material generated later, so that the accumulated material is spread out in a horizontal flow manner on the material accumulation slope, and is not easy to accumulate at the die mouth. The accumulated material is supported by the material accumulation slope and is not easy to slide down, thereby reducing the probability of the accumulated material falling back onto the cable. At the same time, the blowing device blows the accumulated material to move and transfers the accumulated material near the die mouth, so as to use wind force to transfer the accumulated material without damaging the cable, thereby ensuring production quality.

[0010] In one embodiment of the utility model, it includes a material collection trough provided on the outer mold and connected to the end of the material accumulation slope away from the mold opening, and the accumulated material is blown by the blowing device from the material accumulation slope into the material collection trough.

[0011] Through the above technical solution, the accumulated material enters the aggregate trough when being blown away from the die mouth, thereby reducing the accumulated material entering the external environment and preventing the accumulated material from polluting the external environment. At the same time, the operator only needs to clean the accumulated material in the aggregate trough when cleaning the accumulated material, which is convenient for the operator to clean.

[0012] In one embodiment of the present invention, the blowing device is connected to a controller for controlling the timing of blowing.

[0013] Through the above technical solution, the operating interval of the blowing device is controlled by a controller. When a large amount of material is accumulated on the material accumulation slope, the blowing device will uniformly blow the accumulated material into the aggregate trough, so that the operator can use the blowing interval to clean the accumulated material in the aggregate trough and avoid the airflow interfering with the operator.

[0014] In one embodiment of the utility model, the blowing device is configured as an air compressor, and the air compressor is provided with an air outlet terminal, which is connected to the air compressor body through an air pipe. The air outlet terminal is configured as a ring-shaped and surrounds the extruded cable, and the air outlet terminal has an annular air outlet facing the outer mold.

[0015] Through the above technical solution, the air compressor supplies air to the air outlet terminal through the air pipe. The gas is ejected from the air outlet and moves toward the mold, blowing the accumulated material on the accumulation slope away from the mold opening.

[0016] In an embodiment of the present invention, the collecting trough is configured as a curved trough.

[0017] Through the above technical solution, the surface of the aggregate trough is rounded, and the accumulated materials are not easy to remain when the operators clean the accumulated materials in the aggregate trough, which is convenient for cleaning.

[0018] As described above, the cable sheath extrusion molding die of the utility model has the following beneficial effects:

[0019] The wire core passes through the die and is extruded from the die mouth together with the outer sheath. Part of the raw material on the outer sheath remains on the material accumulation slope. As the residual raw material continues to increase, the previously generated material will move along the material accumulation slope under the push of the later generated material, so that the accumulated material is spread out in a horizontal flow manner on the material accumulation slope, and is not easy to accumulate at the die mouth. The accumulated material is supported by the material accumulation slope and is not easy to slide down, thereby reducing the probability of the accumulated material falling back onto the cable. At the same time, the blowing device blows the accumulated material to move and transfers the accumulated material near the die mouth, thereby using wind force to transfer the accumulated material without damaging the cable, thereby ensuring production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a cross-sectional view of a mold disclosed in the prior art.

[0021] Figure 2 Shown is a schematic diagram of a cable sheath extrusion molding die disclosed in an embodiment of the present utility model.

[0022] Description of technical feature numbers in the accompanying drawings:

[0023] 1. Inner mold; 2. Outer mold; 3. Die mouth; 4. Wire core; 5. Material accumulation slope; 6. Air outlet terminal; 7. Air compressor; 8. Material collection trough; 9. Fluid channel; 10. Controller. DETAILED DESCRIPTION

[0024] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0025] Example 1

[0026] See also Figure 2 The utility model provides a cable sheath extrusion molding die, comprising:

[0027] An inner mold 1 and an outer mold 2, wherein a cable channel for the cable to pass through is provided between the inner mold 1 and the outer mold 2, and a fluid channel 9 for the thermoplastic polyurethane elastomer to enter is formed between the inner mold 1 and the outer mold 2. After passing through the fluid channel 9, the thermoplastic polyurethane elastomer is extruded together with the wire core 4 from the die opening 3 of the outer mold 2 to form a cable. The outer mold 2 is provided with a die opening 3 surrounding the outer mold 2, and a material accumulation slope 5 which is provided at an acute angle to the middle opening of the outer mold 2 on one side introduced from the die opening 3 toward the wire core, so that the die opening 3 of the outer mold 2 is pointed. When the residual material at the die opening 3 increases continuously, the previously generated material will move along the material accumulation slope 5 under the push of the later generated material, so that the material accumulation is expanded in a horizontal flow manner on the material accumulation slope 5, and is not easy to accumulate at the die opening 3. The material accumulation is supported by the material accumulation slope 5 and is not easy to slide down, thereby reducing the probability of the material accumulation falling back onto the cable.

[0028] See also Figure 2 , and also includes a collection trough 8 provided on the outer mold 2 and connected to the end of the material accumulation slope 5 away from the die opening 3, and the collection trough 8 is configured as a curved groove.

[0029] See also Figure 2 , and also includes a blowing device, which is configured as an air compressor 7, on which is provided an air outlet terminal 6, which is connected to the air compressor 7 body through an air pipe, and the air outlet terminal 6 is configured as a ring-shaped, surrounding extruded cable setting, and the air outlet terminal 6 is arranged in the extrusion direction of the cable, and the air outlet terminal 6 is provided with an air outlet arranged around the cable in the direction of the outer mold 2; the air compressor 7 supplies air, and the gas enters the air outlet terminal 6 through the air pipe, and blows air from the air outlet opened on the air outlet terminal 6 in the opposite direction of the cable travel to promote the transfer of the accumulated materials on the accumulation slope 5 to the collection trough 8, so that the accumulated materials are uniformly stored in the collection trough 8.

[0030] When too much material is accumulated in the aggregate trough 8, the operator will clean it up, thereby reducing the amount of material entering the external environment and preventing the accumulated material from polluting the external environment.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that in this embodiment, no collecting trough 8 is provided on the outer mold 2, and the accumulated materials on the accumulation slope 5 are directly blown into the external environment by the blowing device, which can simplify the processing of the outer mold 2.

[0033] Example 3

[0034] See also Figure 2The difference between this embodiment and embodiment 1 is that in this embodiment, the blowing device is connected to a controller 10 for controlling the interval blowing. The controller 10 is configured as a timed switch solenoid valve and is disposed on the air pipe connecting the air compressor 7 and the air outlet terminal 6, so that a certain amount of accumulated materials on the accumulation slope 5 are uniformly blown into the aggregate trough 8, so that the operator can use the interval of blowing to clean the accumulated materials in the aggregate trough 8 and avoid the airflow interfering with the operator.

[0035] When the utility model is implemented, the wire core 4 passes through the mold and is extruded from the die opening 3 together with the outer sheath, and part of the raw material on the outer sheath remains on the material accumulation slope 5. When the residual raw material continues to increase, the accumulated material generated first will move along the material accumulation slope 5 under the push of the accumulated material generated later, so that the accumulated material is spread out in a horizontal flow manner on the material accumulation slope 5, and is not easy to accumulate at the die opening 3. The accumulated material is supported by the material accumulation slope 5 and is not easy to slide down, thereby reducing the probability of the accumulated material falling back onto the cable. At the same time, the blowing device blows the accumulated material to move and transfers the accumulated material near the die opening 3, so that the wind force is used to transfer the accumulated material without damaging the cable, thereby ensuring the production quality.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A cable sheath extrusion molding die, comprising an inner die (1) and an outer die (2), characterized in that: The outer mold (2) is provided with a material accumulation slope (5) arranged around the mold opening (3), and arranged at an acute angle to the middle opening of the outer mold (2) from the mold opening (3) toward the wire core on one side; and further comprising: The air blowing device is arranged in the extrusion direction of the cable and blows air in the opposite direction of the cable to promote the transfer of the accumulated material on the material accumulation slope (5).

2. The cable sheath extrusion molding die according to claim 1, characterized in that: It also includes a material collection trough (8) disposed on the outer mold (2) and connected to the end of the material accumulation slope (5) away from the die opening (3), and the accumulated materials are blown by the blowing device from the material accumulation slope (5) into the material collection trough (8).

3. The cable sheath extrusion molding die according to claim 2, characterized in that: The blowing device is connected to a controller (10) for controlling the timing of blowing.

4. The cable sheath extrusion molding die according to claim 1, characterized in that: The blowing device is configured as an air compressor (7), and an air outlet terminal (6) is provided on the air compressor (7). The air outlet terminal (6) is connected to the air compressor (7) body through an air pipe, and the air outlet terminal (6) is configured as a ring-shaped cable surrounding the extruded cable, and the air outlet terminal (6) is provided with an annular air outlet in the direction of the outer mold (2).

5. The cable sheath extrusion molding die according to claim 2, characterized in that: The aggregate trough (8) is configured as a curved trough.

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