An outwardly convex, heatable insulation extrusion die

Abstract

The utility model discloses an outer convex formula can heat type insulation extrusion mould, including extruder head, cable conductor and cable core, the extruder head export end detachable installation has the outer convex formula mould, and it is constituted by the no mouth mould cover and convex mould cover, and the convex mould cover is sleeved in the no mouth mould cover outside, and both have the through hole of same shaft, to supply the cable conductor to pass, and the side of the convex mould cover away from the no mouth mould cover is the outer convex shape, the outer convex part surface of convex mould cover is surrounded and is provided with the resistance wire, and the resistance wire adopts the spiral arrangement mode, and the resistance wire and the outer convex part surface of convex mould cover are directly contacted. The utility model discloses an outer convex formula can heat type insulation extrusion mould through the innovative outer convex formula mould structure and spiral resistance wire arrangement, has realized the even heating to the insulating material, has effectively avoided the surface defect that traditional mould uneven heating leads to, and the fastening installation mode of mould has guaranteed the stability of processing process, makes product size precision improve obviously.

Description

Technical Field

[0001] This utility model relates to the field of insulating extrusion dies. More specifically, this utility model relates to a convex, heatable insulating extrusion die. Background Technology

[0002] In the production of wires and cables, extrusion is one of the key processes for manufacturing high-quality insulation layers. Traditional extruders are typically equipped with a nozzleless die at the die head, which is used to shape the cable and extrude the insulation layer. However, traditional nozzleless dies are prone to surface defects during actual extrusion, such as bubbles, cracks, and uneven thickness. These defects not only affect the cable's appearance but may also impact its electrical performance and mechanical strength, reducing the product's market competitiveness. Utility Model Content

[0003] To achieve these objectives and other advantages according to this utility model, a convex, heatable, insulating extrusion die is provided, comprising an extruder head, a cable conductor, a cable core, and an extruder water tank; the extruder head outlet end is detachably equipped with a convex die, which consists of a nozzleless die sleeve and a convex die sleeve, the convex die sleeve being fitted over the nozzleless die sleeve, and both having a coaxial through hole for the cable core to pass through; the side of the convex die sleeve away from the nozzleless die sleeve is convex; a resistance wire is arranged around the convex portion surface of the convex die sleeve in a spiral arrangement, and the resistance wire is in direct contact with the convex portion surface of the convex die sleeve.

[0004] According to a preferred embodiment of the present invention, the resistance wire is connected to a temperature sensor and a power supply, and the power supply is connected to a PLC controller. The temperature sensor monitors the temperature of the resistance wire in real time, and the PLC controller adjusts the heating power of the power supply according to the feedback signal from the temperature sensor, thereby adjusting the temperature of the resistance wire.

[0005] According to a preferred embodiment of the present invention, the nozzleless mold sleeve and the convex mold sleeve are made of stainless steel alloy or copper-aluminum alloy.

[0006] According to a preferred embodiment of the present invention, the thickness of the convex portion of the convex mold sleeve is 3 cm to 5 cm.

[0007] According to a preferred embodiment of the present invention, the convex mold sleeve and the nozzleless mold sleeve are fixedly connected to form an integral whole, and then a fixed bracket is connected to maintain vertical support.

[0008] According to a preferred embodiment of the present invention, the outer convex portion of the convex mold sleeve is provided with an annular groove, and the resistance wire is embedded in the annular groove.

[0009] It also includes an extruder water tank, located on one side of the extruder head outlet, for water cooling of the extruded cable core.

[0010] This utility model has at least the following beneficial effects: The convex heatable insulating extrusion die of this utility model achieves uniform heating of the insulating material through the innovative convex die structure and spiral resistance wire arrangement, effectively avoiding surface defects caused by uneven heating of traditional dies. At the same time, the fastening installation method of the die ensures the stability of the processing process and significantly improves the dimensional accuracy of the product.

[0011] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the convex, heatable, insulating extrusion die of this utility model.

[0013] Figure 2 This is a schematic diagram of the external convex mold in this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0015] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0016] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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, the above terms should not be construed as a limitation of this utility model.

[0017] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0018] like Figure 1-2 As shown, a preferred embodiment of this utility model provides a convex, heatable, insulating extrusion die, including an extruder head 2, a cable conductor 1, a cable core 4, and an extruder water tank 5; the extruder head 2 is detachably equipped with a convex die at its outlet end, which consists of a nozzleless die sleeve 8-1 and a convex die sleeve 8-2. The convex die sleeve 8-2 is fitted over the nozzleless die sleeve 8-1, and the two have a coaxial through hole for the cable core 4 to pass through. The side of the convex die sleeve 8-2 away from the nozzleless die sleeve 8-1 is convex; a resistance wire 3 is arranged around the convex part of the convex die sleeve 8-2 in a spiral arrangement, and the resistance wire 3 is in direct contact with the convex part of the convex die sleeve 8-2;

[0019] During operation, the cable conductor 1 first passes through the die cavity of the extruder head 2. As the insulating material is extruded from the extruder, it flows through the forming channel formed by the nozzleless die sleeve 8-1 and the convex die sleeve 8-2. Simultaneously, the resistance wire 3 is energized and heats up. The heat is conducted through direct contact to the outer convex surface of the convex die sleeve 8-2, ultimately encasing the cable conductor 1 in insulating material to form the cable core 4. The convex die sleeve 8-2's design and outward convex shape increase the heating area, and combined with the spirally arranged resistance wire 3, heat is evenly distributed across the entire die surface. The heat generated by the energized resistance wire provides secondary heating to the die, offering a stable and uniform temperature environment to ensure good forming and surface quality of the insulating material. This uniform heating ensures that the insulating material is heated evenly during the forming process, avoiding localized overheating or underheating.

[0020] The convex mold sleeve 8-2 has an outwardly convex shape on the side away from the nozzleless mold sleeve 8-1, which increases the contact area with the insulating material. In another technical solution, the resistance wire is connected to a temperature sensor and a power supply, which is connected to a PLC controller. The temperature sensor monitors the temperature of the resistance wire in real time, and the PLC controller adjusts the heating power of the power supply according to the feedback signal from the temperature sensor, thereby regulating the temperature of the resistance wire.

[0021] A temperature sensor continuously monitors the surface temperature of the resistance wire 3 and transmits the detection signal to the PLC controller. The PLC compares the detected value with a preset temperature value. When the detected temperature is lower than the set value, the PLC increases the control output and raises the power supply voltage; when the detected temperature is higher than the set value, it lowers the power supply voltage. This closed-loop regulation ensures that the temperature of the resistance wire 3 is always maintained within the set range.

[0022] In another technical solution, the nozzleless die sleeve and the convex die sleeve are made of stainless steel alloy or copper-aluminum alloy. The selection of alloy materials with high temperature resistance and good thermal conductivity ensures the structural stability and service life of the mold in high-temperature working environments, while improving heat conduction efficiency and promoting uniform temperature distribution.

[0023] In another technical solution, the thickness of the convex portion of the convex mold sleeve is 3 to 5 centimeters. This optimized mold thickness design ensures uniform heat conduction while avoiding energy waste, thus improving energy efficiency while maintaining heating effectiveness.

[0024] In another technical solution, the convex mold sleeve 8-2 and the nozzleless mold sleeve 8-1 are fixedly connected to form a whole, and then connected to the fixed bracket 7 to maintain vertical support. The integrated structural design improves the installation stability of the mold, and the fixed bracket ensures the positional accuracy of the mold during processing, effectively avoiding displacement and ensuring the consistency of product quality.

[0025] In another technical solution, the resistance wire is embedded in the annular groove. The annular groove design ensures that the resistance wire fits tightly against the mold surface, improving heat conduction efficiency, reducing heat loss, and ensuring uniform heating, thereby further improving the forming quality of the insulation layer.

[0026] Another technical solution also includes an extruder water tank 5, which is located on one side of the extruder head outlet end to cool the extruded cable core with water.

[0027] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A convex, heatable, insulating extrusion die, characterized in that, This includes the extruder head, cable conductors, and cable cores; The extruder head outlet end is detachably equipped with an externally convex mold, which consists of a nozzleless mold sleeve and a convex mold sleeve. The convex mold sleeve is fitted outside the nozzleless mold sleeve, and the two have a coaxial through hole for the cable conductor to pass through. The side of the convex mold sleeve away from the nozzleless mold sleeve is convex. A resistance wire is arranged around the outer convex part of the convex mold sleeve. The resistance wire is arranged in a spiral pattern and is in direct contact with the outer convex part of the convex mold sleeve.

2. The convex, heatable, insulating extrusion die according to claim 1, characterized in that, The resistance wire is connected to a temperature sensor and a power supply. The power supply is connected to a PLC controller. The temperature sensor monitors the temperature of the resistance wire in real time.

3. The externally convex, heatable, insulating extrusion die according to claim 1, characterized in that, Nozzleless die sleeves and convex die sleeves are made of stainless steel alloy or copper-aluminum alloy.

4. The convex, heatable, insulating extrusion die according to claim 1, characterized in that, The thickness of the convex portion of the convex mold sleeve is 3 to 5 centimeters.

5. The convex, heatable, insulating extrusion die according to claim 1, characterized in that, The convex mold sleeve and the nozzleless mold sleeve are fixedly connected to form a whole, and then a fixed bracket is connected to maintain vertical support.

6. The convex, heatable insulating extrusion die according to claim 1, characterized in that, The outer convex portion of the convex mold sleeve is provided with an annular groove, and the resistance wire is embedded in the annular groove.

7. The convex, heatable, insulating extrusion die according to claim 1, characterized in that, It also includes an extruder water tank, located on one side of the extruder head outlet, to provide water cooling for the extruded cable cores.

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