Die penetrating device

Abstract

The utility model discloses a mold penetrating device, which relates to the technical field of wire and cable production, and comprises a column body and a column tip, at least two column holes are arranged on the column body at intervals, and the opening directions of the at least two column holes are the same; the column hole comprises an inlet end and an outlet end, and the size of the inlet end is larger than that of the outlet end; the column tip comprises a tip end and a connecting end, and the connecting end is fixedly connected with one end of the column body. Through the arrangement, each branch bundle formed by equally dividing a conductor bundle can easily penetrate through each column hole, the connection of the conductor bundle and the column body is realized, during mold penetrating, the column tip of the mold penetrating device is aligned with a mold inner hole of an extruder head, and the whole mold penetrating device penetrates out of the extruder head, so that the mold penetrating process of the conductor bundle can be completed; the whole process is convenient and fast, the mold penetrating time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire and cable production, and particularly relates to a die threading device. Background Art

[0002] During the processing of wires and cables, after the metal conductor material has completed the wire drawing process, an insulation layer extrusion process is required. The insulating material is heated and melted by an extruder and then uniformly coated on the conductor bundle to form an insulation layer. Before this process, the operator needs to manually pass the conductor bundle through the die in the extruder and pass it out from the front end of the machine head. Since the conductor bundle includes many conductor wires and the die is relatively long, when threading the die manually, the conductor wires are not easy to fix, and the surface shape of the conductor bundle will change irregularly, which easily causes the conductor bundle to get stuck in the die hole, and phenomena such as wire running and wire breaking are likely to occur, greatly reducing the die threading efficiency.

[0003] In view of this, it is necessary to propose a die threading device to solve or at least alleviate the above technical problems. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a die threading device, aiming to solve the technical problem of low die threading efficiency of the conductor bundle in the insulation layer extrusion process of wires and cables.

[0005] To achieve the above purpose, the utility model proposes a die threading device, including:

[0006] A column body, on which at least two column holes are arranged at intervals, and the opening directions of at least two of the column holes are the same;

[0007] A column tip, which includes a tip and a connecting end, and the connecting end is fixedly connected to one end of the column body;

[0008] The column hole includes an inlet end and an outlet end, and the size of the inlet end is larger than that of the outlet end.

[0009] In an embodiment, the column tip is conical, and the horizontal angle between the generatrix of the column tip and the central axis of the column body is 45° to 60°.

[0010] In an embodiment, at least two of the column holes are uniformly distributed along the axial direction of the column body.

[0011] In an embodiment, the diameter of the column body is 0.2 mm to 0.5 mm smaller than the opening diameter of the die;

[0012] Definition: The opening diameter of the die is D0, and the diameter of the column body is D1, then D1 = D0 - (0.2 mm to 0.5 mm).

[0013] In one embodiment, the length of the column is 4 mm to 10 mm longer than the length of the extruder head;

[0014] Definition: Let the length of the extruder head be L0 and the length of the column be L1, then L1 = L0 + (4 mm to 10 mm).

[0015] In one embodiment, the material of the column includes one of high-strength alloy, high-strength single-element metal, and high-strength non-metallic material.

[0016] In one embodiment, a first electroplated layer is provided on the surfaces of both the column and the column tip to reduce the friction during die penetration.

[0017] In one embodiment, a second electroplated layer is provided on the inner wall of the column hole to make it easier for the conductor bundle to penetrate into the column hole.

[0018] In one embodiment, a fixing portion is provided at one end of the column away from the column tip, and the fixing portion is used to fix the conductor bundle during die penetration.

[0019] In one embodiment, an identification module is provided on the column, and the identification module is used to indicate the diameter and length of the column and the number of column holes.

[0020] In the technical solution of the present invention, the die penetration device includes the column and the column tip. At least two column holes are spaced apart on the column, and the opening directions of at least two column holes are the same. For the convenience of the conductor bundle to pass through, the column hole includes an inlet end and an outlet end, and the size of the inlet end is larger than the size of the outlet end; the column tip includes a tip and a connection end, and the connection end is fixedly connected to one end of the column. With this setting, in the insulation layer extrusion process of cables and wires, the conductor bundle can be divided into sub-bundles with the same number as the column holes, and the sub-bundles can be easily passed through the column holes through the inlet end. Subsequently, the conductor bundle can quickly pass through the die in the extruder head under the drive of the die penetration device, thereby improving the die penetration efficiency of the conductor bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the die penetration device provided by the present invention;

[0023] Figure 2 is Figure 1 a schematic structural diagram from another perspective;

[0024] Figure 3 is a schematic cross-sectional structure diagram of an embodiment of the die-piercing device provided by the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 10. Die-piercing device; 1. Column tip; 2. Column hole; 3. Column body.

[0027] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] The manufacturing of wire and cable is a complex and delicate technological process, and the extrusion process is particularly crucial. This process involves heating and melting an insulating material, usually plastic, through an extruder, and then extruding it through a precisely designed die to form a uniform insulating layer covering the metal conductor. The screw structure, temperature control, and die precision of the extruder directly affect the quality of the insulating layer. The insulating material needs to have good electrical insulation properties, mechanical strength, and chemical corrosion resistance to ensure the long-term stable operation of the cable. During the extrusion process, the fluidity, melting state, and curing speed of the material must be strictly controlled to ensure the uniformity and tightness of the insulating layer.

[0032] However, according to the applicant's research findings, although the extrusion process is relatively mature technically, there are still some problems in actual production operations, especially during the process of the conductor bundle passing through the die. The conductor bundle is usually composed of multiple fine metal wires. Since these metal wires are very soft and fine, it is difficult to maintain a stable shape and position during manual threading through the die. This results in the conductor bundle being easily stuck in the die, or wire running or wire breaking occurring. In addition, the labor intensity of manual threading is high, and it takes the operator one to two hours to complete the threading process. During this process, the operator needs to concentrate for a long time, which easily leads to fatigue and operation errors, seriously affecting the production efficiency of wire and cable.

[0033] In view of this, the present application proposes a die threading device 10, aiming to solve the above technical problems.

[0034] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the die threading device 10 includes a column body 3 and a column tip 1. At least two column holes 2 are spaced apart on the column body 3, and the opening directions of at least two column holes 2 are the same; and the column hole 2 includes an inlet end and an outlet end, and the size of the inlet end is larger than that of the outlet end; the column tip 1 includes a tip and a connecting end, and the connecting end is fixedly connected to one end of the column body 3.

[0035] Specifically, in this embodiment, the die-piercing device 10 is composed of a tip 1 and a column body 3. The tip of the tip 1 is used to align with the inner hole of the die in the extruder head, and the connecting end is used to connect with one end of the column body 3. The whole of the tip 1 is conical, and the diameter of the connecting end is the same as that of the column body 3. This setting makes the diameter of the tip of the tip 1 to the connecting end gradually increase, which is convenient for guiding the column body 3 into the inner hole of the die. At least two column holes 2 are provided on the column body 3. Preferably, the number of the column holes 2 is eight or more, and the adjacent two column holes 2 are arranged at intervals. The shapes and sizes of the multiple column holes 2 are the same, so as to evenly divide the conductor bundle and pass through each column hole 2, which is convenient for the operator to operate. At both ends of the column hole 2, they are respectively an inlet end and an outlet end. In this embodiment, the projections of the inlet end and the outlet end on the horizontal plane are both circular, and the diameter of the inlet end is slightly larger than that of the outlet end, making the column hole 2 as a whole frustum-shaped. This setting is convenient for guiding the divided bundle to pass through the column hole 2 and improving the efficiency of divided-bundle piercing. In addition, in order to avoid phenomena such as chaos and disorder when the divided bundles pass through the die, the opening directions of each column hole 2 need to be kept consistent, that is, all the inlet ends of the column holes 2 are arranged on the same side of the column body 3, and the outlet ends are all arranged on the other side of the column body 3 opposite to the inlet end. After the conductor bundle is divided, when the divided bundle passes through the column hole 2, the divided bundle needs to penetrate from the inlet end of the column hole 2 and exit from the outlet end. In this way, the synchronous movement or rotation between the divided bundles can be maintained, avoiding the mutual chaotic entanglement between the divided bundles and affecting the production quality. Moreover, this setting does not require the column body 3 to be rotated frequently when the divided bundle pierces the die, which is convenient for the operator to operate. After connecting the conductor bundle to the die-piercing device 10, the operator only needs to align the tip 1 of the die-piercing device 10 with the inner hole of the die on the extruder head and apply a little force to make the die-piercing device 10 drive the conductor bundle to advance in the inner hole of the die until the whole die-piercing device 10 penetrates the head, then the rapid die-piercing of the conductor bundle is completed. The die-piercing process only takes a few minutes. Compared with manual die-piercing, the die-piercing time is greatly reduced.

[0036] In an embodiment of the present utility model, the die-piercing device 10 includes a column body 3 and a tip 1. At least two column holes 2 are arranged at intervals on the column body 3, and the opening directions of at least two column holes 2 are the same; and the column hole 2 includes an inlet end and an outlet end, and the diameter of the inlet end is larger than that of the outlet end; the tip 1 includes a tip and a connecting end, and the connecting end is fixedly connected with one end of the column body 3. Through this setting, each divided bundle evenly divided from the conductor bundle can easily pass through each column hole 2, realizing the connection between the conductor bundle and the column body 3. When piercing the die, only the tip 1 of the die-piercing device 10 needs to be aligned with the inner hole of the die of the extruder head, and the whole die-piercing device 10 is penetrated from the head, then the die-piercing process of the conductor bundle can be completed. The whole process is convenient and fast, greatly reducing the die-piercing time and improving the production efficiency.

[0037] Furthermore, in an embodiment of the present utility model, the tip 1 of the column is conical, and the horizontal angle between the generatrix of the tip 1 of the column and the central axis of the column body 3 is 45° to 60°. Specifically, please refer to Figure 1 and Figure 2 , the tip 1 of the column is integrally conical. This shape makes the diameter of the tip of the tip 1 of the column gradually increase to the connection end, so as to facilitate guiding the column body 3 into the inner hole of the mold. Since it is integrally conical and the column body 3 is cylindrical, the angle between the generatrix of the tip 1 of the column and the central axis of the column body 3 remains unchanged. By setting this angle in the range of 45° to 60°, it is possible to provide better stability for the tip 1 of the column while minimizing the frictional resistance as much as possible. This angle design also helps the tip 1 of the column to guide and position the conductor bundle during the die-piercing process, ensuring its uniform distribution in the mold. In one embodiment, the horizontal angle between the generatrix of the tip 1 of the column and the central axis of the column body 3 is set to 45°.

[0038] In an embodiment of the present utility model, at least two column holes 2 are evenly distributed along the axial direction of the column body 3. Preferably, the number of column holes 2 is 8 or more. In this embodiment, as Figure 1 shown, the number of column holes 2 is 11 in total, and the 11 column holes 2 are evenly distributed on the column body 3. Even distribution means that the horizontal distance between the central axes of adjacent column holes 2 remains unchanged, and the central axes of these column holes 2 are arranged at equal intervals along the axis of the column body 3. For example, if the length of the column body 3 is L and there are three column holes 2, then the central axes of these three column holes 2 will be located at the positions of 1 / 4L, 1 / 2L, and 3 / 4L at one end of the column body 3 respectively, so as to ensure their even distribution along the axial direction.

[0039] Further, in order to avoid the problem of the column 3 getting stuck due to its too large diameter, in one embodiment, the diameter of the column is 0.2 mm to 0.5 mm smaller than the opening diameter of the mold. According to the size of the conductor bundle, during the design, the design of the die-piercing device 10 needs to particularly consider the precise fit with the die of the extruder head. The opening diameter of the mold is defined as D0, and the diameter of the column 3 is defined as D1. The diameter D1 of the column 3 is determined according to the opening diameter D0 of the mold to ensure that the column 3 can smoothly pass through the opening of the mold, while maintaining a certain clearance to drive the conductor bundle through the opening of the mold. Specifically, the diameter D1 of the column 3 is 0.2 mm to 0.5 mm smaller than the opening diameter D0 of the mold, that is, D1 = D0 - (0.2 mm to 0.5 mm). This clearance range allows the column 3 to have sufficient space for fine adjustment when passing through the mold to adapt to the manufacturing tolerance and wear of the mold. At the same time, this clearance also helps to reduce the friction between the column 3 and the mold, ensuring the smoothness of the die-piercing process and reducing wear. For example, if the opening diameter D0 of the mold is 2 mm, then the diameter of the column 3 can be designed to be between 1.5 mm and 1.8 mm, and this diameter can be achieved through precise machining and measurement to ensure that the diameter of each column 3 can be accurately controlled within the required range.

[0040] In one embodiment of the present utility model, the length of the column is 4 mm to 10 mm longer than the length of the extruder head. The length of the extruder head is defined as L0, and the length of the column 3 is defined as L1. The length L1 of the column 3 is determined according to the length L0 of the extruder head. Specifically, the length L1 of the column 3 is 4 mm to 10 mm longer than the length L0 of the extruder head, that is, L1 = L0 + (4 mm to 10 mm), to ensure that the column 3 can appropriately extend when passing through the head, facilitating the operator to pick up and pull out the column 3 for easy operation. At the same time, this setting allows the column 3 to have sufficient length to extend outside the head after passing through the head, facilitating the positioning and adjustment of the conductor bundle. In practical applications, the length L1 of the column 3 can be adjusted according to the specific model of the extruder and the design of the head to meet different production requirements and process conditions. In this embodiment, if the length of the extruder head is 300 mm, then the length of the column 3 is between 304 mm and 310 mm.

[0041] In order to enable the column 3 to maintain sufficient stiffness and avoid excessive deformation during the die-piercing process, which may in turn cause excessive deformation of the conductor bundle and affect the die-piercing efficiency, in one embodiment of the present utility model, the material of the column 3 includes one of high-strength alloys, high-strength single-element metals, and high-strength non-metallic materials, such as one of stainless steel, nickel-based alloys, titanium, carbon fiber-reinforced plastics, ceramic matrix composites, etc. In practical applications, the material selection of the column 3 needs to be comprehensively considered according to the specific working conditions of the extruder, the expected service life, and the cost-effectiveness.

[0042] Furthermore, in an embodiment of the present utility model, the surfaces of the column body 3 and the column tip 1 are both provided with a first electroplated layer to reduce the friction during die penetration. The first electroplated layer is made of a wear-resistant material with a low friction coefficient, such as nickel, chromium, or nickel-chromium alloy. These materials can not only provide excellent wear resistance but also form a smooth protective film on the surface to reduce the friction when contacting the die. The electroplating process uses electroplating techniques such as electrochemcial deposition to ensure that the first electroplated layer is evenly and firmly attached to the surfaces of the column body 3 and the column tip 1. Before electroplating, the surfaces of the column body 3 and the column tip 1 are finely polished and cleaned to remove burrs and oil stains, ensuring the tight bonding between the electroplated layer and the substrate. Through this setting, on the one hand, the friction coefficient between the column body 3 and the column tip 1 and the die during die penetration can be significantly reduced, reducing the surface wear. On the other hand, due to the reduction of friction, the die penetration process is smoother, improving the production efficiency and reducing the influence of the heat generated by friction on the material properties.

[0043] In addition, in an embodiment of the present utility model, the inner wall of the column hole 2 is provided with a second electroplated layer to make it easier for the conductor bundle to penetrate into the column hole 2. The second electroplated layer and the first electroplated layer can be applied to the die penetration device 10 simultaneously using electroplating techniques. The second electroplated layer is disposed on the inner wall surfaces of the respective column holes 2 to reduce the frictional resistance when the divided conductor bundles penetrate into the column holes 2, making it easier for the divided bundles to penetrate into the column holes 2, thereby improving the die penetration efficiency.

[0044] In an embodiment of the present utility model, at the end of the column body 3 far from the column tip 1, a fixing portion is provided, and the fixing portion is used to fix the conductor bundle during die penetration. Specifically, the fixing portion is a hollow cylindrical structure with the same diameter as the column body 3. An opening is provided at the end of the fixing portion far from the column body 3 and is communicated with the cavity inside. The other end is installed on the column body 3 using a screw structure. When the divided bundles of the conductor bundle exit from the outlet end of the column hole 2, each divided bundle continues to extend towards the fixing portion until the front end of each divided bundle can extend into the cavity inside the fixing portion. Then, a part of the front end of the divided bundle is inserted into the cavity inside through the opening of the fixing portion. After the front ends of all the divided bundles are inserted into the cavity, a rubber plug is used to block the opening of the fixing portion, thereby fixing each divided bundle in the fixing portion and preventing one or more divided bundles from coming out of the column hole 2 during die penetration, thereby improving the stability of the conductor bundle during die penetration.

[0045] In an embodiment of the present utility model, an identification module is provided on the column body 3. The identification module is used to mark the diameter, length of the column body 3, and the number of column holes 2. Specifically, the identification module is set at an easily observable position on the column body 3, such as the middle of the column body 3 or one end close to the fixing part, to ensure the visibility of information during operation. The diameter (D1), length (L1) of the column body 3, and the number (N) of column holes 2 are clearly marked on the identification module. For example, if the diameter of the column body 3 is 4.8 mm, the length is 305 mm, and the number of column holes 2 is 11, then markings such as "4.8×305×11" or "Φ4.8 / L 305 / N 11" can be set on the column body 3. The identification module can mark the information on the surface of the column body 3 by means of laser engraving, screen printing, or mechanical engraving. Through this setting, the operator can quickly identify the key parameters of the column body 3 through the identification module, which speeds up the matching process between the die-piercing device 10 and the extruder head. Moreover, the clear markings can reduce operation errors caused by mismatches in size or the number of column holes 2, improving the accuracy of the production process. At the same time, the standardized identification module facilitates inventory management and equipment maintenance, simplifying the material tracking at the production site.

[0046] In an embodiment of the present utility model, the process of using the die-piercing device 10 to assist the conductor bundle in passing through the die is as follows: First, select the corresponding die-piercing device 10 according to the specifications of the conductor bundle and the information of the identification module. Then, evenly divide the conductor bundle into equal amounts. The number of sub-bundles is the same as the number of column holes 2 on the die-piercing device 10. After each sub-bundle is stranded separately, pass them through their corresponding column holes 2 respectively, and fix each sub-bundle through the fixing part. At this time, the conductor bundle has been connected to the die-piercing device 10. Then, align the tip of the column tip 1 with the inner hole of the die, and forcefully pass the die-piercing device 10 through the inner hole of the die until the die-piercing device 10 exits at the other end of the extruder head. When the entire die-piercing device 10 passes through the extruder head, the conductor bundle also completes the die-piercing under the drive of the die-piercing device 10. At this time, loosen the fixing part, let each sub-bundle withdraw from the column hole 2, and tighten the entire conductor bundle by hand or tool, that is, complete the die-piercing process of the conductor bundle.

[0047] The above is only an exemplary embodiment of the present utility model, and it does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A mold penetration device, characterized in that: include: A column, wherein at least two column holes are arranged at intervals on the column, and at least two of the column holes have the same opening direction; A column tip, the column tip comprising a tip and a connecting end, the connecting end being fixedly connected to one end of the column; The column hole comprises an inlet end and an outlet end, and the size of the inlet end is larger than the size of the outlet end.

2. The mold-piercing device according to claim 1, characterized in that: The column tip is conical, and the horizontal angle between the generatrix of the column tip and the central axis of the column body is 45° to 60°.

3. The mold-piercing device according to claim 1, characterized in that: At least two of the column holes are evenly distributed along the axial direction of the column.

4. The mold-piercing device according to claim 1, characterized in that: The diameter of the cylinder is 0.2 mm to 0.5 mm smaller than the opening diameter of the mold; Definition: The opening diameter of the mold is D0, and the diameter of the cylinder is D1, then D1 = D0-(0.2mm~0.5mm).

5. The mold-piercing device according to claim 1, characterized in that: The length of the cylinder is 4 mm to 10 mm longer than the length of the extruder head; Definition: The length of the extruder head is L0, and the length of the cylinder is L1, then L1 = L0 + (4 mm to 10 mm).

6. The mold-piercing device according to claim 1, characterized in that: The material of the column includes one of a high-strength alloy, a high-strength single-element metal and a high-strength non-metallic material.

7. The mold-piercing device according to claim 1, characterized in that: The surfaces of the column and the column tip are both provided with a first electroplating layer to reduce friction during mold penetration.

8. The mold-piercing device according to claim 1, characterized in that: The inner wall of the column hole is provided with a second electroplating layer to make it easier for the conductor bundle to penetrate into the column hole.

9. The mold-piercing device according to claim 1, characterized in that: A fixing portion is provided at one end of the column away from the column tip, and the fixing portion is used to fix the conductor bundle when passing through the mold.

10. The mold-piercing device according to claim 1, characterized in that: The column is provided with an identification module, and the identification module is used to mark the diameter and length of the column and the number of the column holes.

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