A method for judging and solving the scratch position of the insulated core of CCV cross-linking equipment

Abstract

The present application relates to a kind of for CCV crosslinking equipment insulating core scratch position determination and solution method, step one: the head mould cover of CCV equipment is used before use, artificially make a small gap at the export, when core extrusion, the surface of line core will produce a longitudinal raised line, the longitudinal raised line is called mark line, in normal production process, the mark line is parallel with cable core axis;Step two: with mark line as reference line, when line core appears scratch, respectively in the left and right small amplitude rotation conductor in head position, and record the position of rotation, when line core is out vulcanization pipe, the situation of scratch and mark line can be judged the exact position of scratch;Step three: through the above method, identify the position of scratch after scratch, take corresponding measures to solve scratch.The present application can judge the position of line core surface scratch without stopping machine, and then solve the problem without stopping machine through corresponding method.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to a method for determining and resolving the location of scratches on the insulation core of CCV crosslinking equipment. Background Technology

[0002] Occasionally, scratches may appear on the surface of the wire core during CCV production. Generally, there are two reasons for this: a) After prolonged operation, mold residue gradually accumulates at the die exit, causing scratches when the wire core exits the die; b) Accumulated sulfide in the vulcanizing tube falls off and, as it moves downwards, eventually blocks the lower seal of the CCV, scratching the wire core at this point. The locations of the scratches differ due to these two causes, and the methods for resolving them also differ.

[0003] Currently, determining the location of scratches requires stopping the machine, opening the upper and lower seals of the vulcanizing tube, and checking the die opening and lower seal of the die sleeve respectively to determine the location and cause of the scratches.

[0004] Problems with existing technology: It requires shutdown and restart, which not only involves a large workload, but also causes significant economic losses during the startup and shutdown process (a single startup and shutdown cycle takes 12 hours, with direct economic costs of about 10,000 yuan), as well as numerous other problems such as increased cable inventory and inability to meet delivery deadlines. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for determining and solving the location of scratches on the insulated core of CCV crosslinking equipment. This method can determine the location of scratches on the core surface without stopping the machine, and then solve the problem without stopping the machine.

[0006] The technical solution adopted by this invention to solve its technical problem is: to provide a method for determining and resolving the location of scratches on the insulating core of CCV crosslinking equipment, specifically including the following steps:

[0007] Step 1: Before using the die sleeve of the CCV equipment, a small notch is artificially created at the exit. When the wire core is extruded, a longitudinal raised line will be generated on the surface of the wire core. This longitudinal raised line is called the marking line. During normal production, the marking line is parallel to the cable core axis.

[0008] Step Two: Using the marked line as a reference, when scratches appear on the wire core, slightly rotate the conductor left and right at the machine head position and slightly rotate the wire core left and right at the lower seal position, recording the rotation positions. After the wire core exits the vulcanizing tube, observe the scratches and the marked line to determine the exact location of the scratches. There are generally two scenarios, and the location of the scratches on the wire core surface can be determined based on these two scenarios:

[0009] Scenario 1: When the conductor is in a rotating position, the marking line and the scratch both appear as wavy lines, indicating that the scratch is located at the same position as the marking line, which is at the die sleeve of the head.

[0010] Scenario 2: The scratch at the rotating position of the conductor is a wavy line, while the marking line is a straight line. The marking line does not rotate with the conductor, indicating that the scratch was generated at the lower seal.

[0011] Step 3: After identifying the location of the scratch using the above methods, take corresponding measures to resolve the scratch.

[0012] As a supplement to the technical solution described in this invention, in step three, for the scratches generated at the head mold sleeve, the insulation thickness is increased when the conductor joint passes through the head, so that the secretions can be carried away by the cable, thereby eliminating the scratches.

[0013] As a supplement to the technical solution described in this invention, in step three, for the scratches generated at the lower seal, the lower seal is loosened and tightened repeatedly, and the hard block stuck at the seal can often be brought out, thereby solving the scratch problem.

[0014] Beneficial Effects: This invention relates to a method for determining and resolving scratch locations on insulated wire cores in CCV crosslinking equipment. By utilizing marking lines on the insulated wire core and rotating the core at different positions, the wavy lines formed by the scratches and marking lines as the core rotates are observed, thus determining the location of the scratches and allowing for corrective measures. This invention is simple and quick to operate, requiring no machine shutdown or disassembly for inspection of the die opening, vulcanizing pipes, and lower seal to determine the location and approximate cause of the scratches and provide a solution. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the present invention;

[0016] Figure 2 This is a schematic diagram of the marking line status during normal production of the present invention;

[0017] Figure 3 This is a schematic diagram showing that the marking lines and scratches of this invention are all wavy lines that are synchronized.

[0018] Figure 4 This is a schematic diagram of the invention where only the scratches appear as wavy lines. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0020] The embodiments of the present invention relate to a method for determining and resolving the location of scratches on the insulating core of CCV crosslinking equipment, such as... Figure 1-4 As shown, the specific steps include:

[0021] Step 1: Before use, a small notch is artificially created at the exit of the die sleeve used in CCV equipment. When the wire core is extruded, a longitudinal raised line will be generated on the surface of the wire core. This longitudinal raised line is called the marking line. During normal production, this marking line is parallel to the wire core axis (e.g., ...). Figure 2 (as shown);

[0022] Step Two: Using the marked line as a reference, when scratches appear on the wire core, slightly rotate the conductor left and right at the machine head position and slightly rotate the wire core left and right at the lower seal position, recording the rotation positions. After the wire core exits the vulcanizing tube, observe the scratches and the marked line to determine the exact location of the scratches. There are generally two scenarios, and the location of the scratches on the wire core surface can be determined based on these two scenarios:

[0023] Scenario 1: At the conductor's rotational position, both the marking line and the scratch appear as wavy lines, see... Figure 3 This indicates that the location of the scratch is the same as the location of the marking line, which is at the die sleeve of the machine head;

[0024] Scenario 2: The scratch at the rotation position of the wire core is a wavy line, while the marking line is a straight line. See Figure 4 The fact that the marking line does not rotate with the conductor indicates that the scratch was caused at the lower seal.

[0025] Step 3: After identifying the location of the scratch using the above methods, take corresponding measures to resolve the scratch.

[0026] Scratches at the die head sleeve are often caused by secretions that accumulate at the die head during the extrusion process, which scratch the cable. To address this issue, the insulation thickness can be increased when the conductor joint passes through the die head (this section is waste wire), allowing the secretions to be carried away by the cable, thereby eliminating the scratches.

[0027] For scratches at the lower seal, repeatedly loosening and tightening the lower seal can often remove the hard block stuck at the seal, thus solving the scratch problem.

[0028] This invention utilizes marking lines on insulated wire cores. By rotating the wire core at different positions, the location of scratches and the wavy lines formed by the marking lines as the wire core rotates can be observed, allowing for the determination of scratch locations and subsequent solutions. This invention is simple and quick to operate, requiring no machine shutdown or disassembly for inspection of the die opening, vulcanizing pipes, and lower seals. It allows for the identification of scratch locations and approximate causes, enabling effective solutions.

[0029] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0032] The above provides a detailed description of a method for determining the location of scratches on the insulated core of a CCV crosslinking device. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for determining and resolving the location of scratches on the insulating core of CCV crosslinking equipment, characterized in that: Specifically, the following steps are included: Step 1: Before using the die sleeve of the CCV equipment, a small notch is artificially created at the exit. When the wire core is extruded, a longitudinal raised line will be generated on the surface of the wire core. This longitudinal raised line is called the marking line. During normal production, the marking line is parallel to the cable core axis. Step Two: Using the marked line as a reference, when scratches appear on the wire core, slightly rotate the conductor left and right at the machine head position and slightly rotate the wire core left and right at the lower seal position, recording the rotation positions. After the wire core exits the vulcanizing tube, observe the scratches and the marked line to determine the exact location of the scratches. There are generally two scenarios, and the location of the scratches on the wire core surface can be determined based on these two scenarios: Scenario 1: When the conductor is in a rotating position, the marking line and the scratch both appear as wavy lines, indicating that the scratch is located at the same position as the marking line, which is at the die sleeve of the head. Scenario 2: The scratch at the rotating position of the conductor is a wavy line, while the marking line is a straight line. The marking line does not rotate with the conductor, indicating that the scratch was generated at the lower seal. Step 3: After identifying the location of the scratch using the above methods, take corresponding measures to resolve the scratch.

2. The method for determining and resolving the location of scratches on the insulating core of a CCV crosslinking equipment according to claim 1, characterized in that: In step three, for the scratches generated at the head mold sleeve, the insulation thickness is increased when the conductor joint passes through the head, so that the secretions can be carried away by the cable, thereby eliminating the scratches.

3. The method for determining and resolving the location of scratches on the insulating core of a CCV crosslinking equipment according to claim 1, characterized in that: In step three, for the scratches caused at the lower seal, repeatedly loosening and tightening the lower seal can often remove the hard block stuck at the seal, thus solving the scratch problem.

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