A method for continuous processing of insulation extrusion of short metal rods

Abstract

The present invention discloses a method for continuous processing of short-segment metal rod insulation extrusion, comprising the following steps: cutting the two ends of a short-segment metal rod conductor to form a connecting end that can be assembled and disassembled; connecting the metal rod conductors of each segment end to end through the connecting end to form an infinitely expandable long metal rod; pulling the connected metal rod to the extruder head via a pay-out track for continuous insulation extrusion; after the metal rod insulation is pulled by a take-up track, the insulation at the connection is stripped and the rod is split and restored into short segments. The above-mentioned method for continuous processing of short-segment metal rod insulation extrusion makes it easy to control the insulation eccentricity and outer diameter of the short-segment metal rod of the cable during processing, the connection is firm and reliable, the outer diameter of the metal rod is not increased, the connection and splitting operations of the metal rod are simple, the metal rod can be connected while the insulation is being processed, and the metal rod conductor is not damaged. At the same time, the metal rod will not bend or deform during processing.

Description

Technical Field

[0001] The present invention relates to the technical field of electric wires and cables, and in particular to a method for continuously processing the insulation extrusion of short-segment metal rods. Background Art

[0002] Currently, solid metal rod conductors used in the wire and cable industry mostly utilize long, continuous extrusion insulation. Specifically, the solid rod conductor is pulled on a payout reel, where it undergoes insulation extrusion, cooling in a water tank, and finally pulled on a takeup reel. This method presents the following problems: 1) The aluminum rod conductor and insulation must be stored on the payout and takeup reels, causing the aluminum rod to bend and making it difficult to restore the short, straight rod shape; 2) For short sections of aluminum rod insulation under 2 meters, controlling the metal rod tension, insulation eccentricity, and insulation outer diameter stability is difficult; 3) Simultaneous production of multiple short sections is difficult to achieve continuous production, resulting in cumbersome work, low efficiency, and high energy consumption.

[0003] In addition, if you consider connecting short metal rods into long sections for processing, but there are connection problems, if welding is used, the welding process is complicated and restricted by welding equipment, making it difficult to weld the metal rods during insulation processing, and the welds need to be smooth; if a soft rope connection is used, it is easy to cause the front and rear rods to be not in the same straight line, causing the metal rods to get stuck in the die during insulation extrusion. Summary of the Invention

[0004] Based on the above problems, the purpose of the present invention is to provide a continuous processing method for extruding short-segment metal rod insulation, design a metal rod connection form, meet the continuous production of short-segment insulation of metal rod conductors, avoid bending, deformation, and damage of the metal rods during processing, and ensure the insulation processing quality.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for continuous processing of short-segment metal rod insulation extrusion, comprising the steps of:

[0007] Cutting the two ends of a short metal rod conductor to form detachable connection ends;

[0008] The metal rod conductors are connected end to end through the connecting ends to form a long metal rod that can be extended infinitely;

[0009] The connected metal rods are pulled to the extruder head via the pay-off track for continuous insulation extrusion;

[0010] After the metal rod insulation is pulled by the take-up track, the insulation at the connection is stripped off and the rod is split and restored into short sections.

[0011] In particular, the connecting end of one end of each metal rod conductor is convex, and the connecting end of the other end is concave, and the convex end of one metal rod conductor is connected with the concave end of the other metal rod conductor in a dovetail joint.

[0012] In particular, an expansion gap is left at the connection between the protruding end and the groove end to allow the two sections of the metal rod to move axially.

[0013] In particular, the angle between the inclined surface of the protruding end and the cross section of the metal rod is 80°~85°, the angle between the inclined surface of the groove end and the cross section of the metal rod is 70°~75°, and the angle between the inclined surface of the groove end and the cross section of the metal rod is smaller than the angle between the inclined surface of the protruding end and the cross section of the metal rod.

[0014] Particularly, the convex cross section of the protruding end and the concave cross section of the groove end are correspondingly isosceles trapezoidal, and the short base of the isosceles trapezoid is 50% to 60% of the diameter of the metal rod, and the long base is 70% to 80% of the diameter of the metal rod.

[0015] In particular, a triangular steel bracket is provided in front of the line-paying crawler traction, the connected metal rods are supported by the triangular steel bracket, and the tail ends are continuously connected to the metal rods.

[0016] In particular, a cooling water tank is provided between the extruder head and the take-up crawler traction, and the insulation of the metal rod extruded by the extruder head is cooled by passing through the cooling water tank.

[0017] In summary, the beneficial effects of the present invention are that the short-segment metal rod insulation extrusion continuous processing method has the following advantages:

[0018] (1) Continuous extrusion of 2-meter short-segment metal rod insulation is achieved without the need for winding or unwinding reels, and the metal rod will not bend or deform;

[0019] (2) Continuous extrusion of short metal rods increases efficiency by 15 to 20 times compared to conventional extrusion;

[0020] (3) The connection is a detachable structure, the insulation eccentricity and outer diameter are easy to control, the connection is firm and reliable, the outer diameter of the metal rod is not increased, and the connection and separation do not damage the metal rod. At the same time, the connection is set at different angles to form expansion joints, making connection and separation more convenient;

[0021] (4) Connecting the metal rod while the insulation is being extruded enables continuous extrusion of the insulation without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a continuous processing method for insulating and extruding a short metal rod provided by an embodiment of the present invention;

[0023] Figure 2It is a schematic diagram of the connection of metal rods in the continuous processing method of insulation extrusion of short-segment metal rods provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0025] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] In the description of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] See also Figure 1 As shown, this preferred embodiment provides a method for continuous processing of short-segment metal rod insulation extrusion, which includes the following steps:

[0029] Step 1: Cutting the metal rod ends: Cutting the two ends of the short metal rod conductor 1 to form detachable connection ends.

[0030] The combination forms such as Figure 2As shown, each metal rod conductor 1 has a protruding connection end at one end and a recessed connection end at the other end. The protruding end 11 of one metal rod conductor is connected to the recessed end 12 of another metal rod conductor in a dovetail joint. The dovetail joint is used as an example here for ease of operation and reliable connection, but is not limited to this. Other shapes, such as conical, spherical, and special shapes, are also applicable.

[0031] Specifically, it is preferred that the cross-section of the convex part of the protruding end 11 and the cross-section of the concave part of the groove end 12 are corresponding to an isosceles trapezoid, and the short base of the isosceles trapezoid is 50% to 60% of the diameter of the metal rod, and the long base is 70% to 80% of the diameter of the metal rod; the angle between the inclined surface of the protruding end 11 and the cross-section of the metal rod is 80° to 85°, the angle between the inclined surface of the groove end 12 and the cross-section of the metal rod is 70° to 75°, and the angle between the inclined surface of the groove end 12 and the cross-section of the metal rod is smaller than the angle between the inclined surface of the protruding end 11 and the cross-section of the metal rod.

[0032] Step 2: Connect the metal rods: connect the metal rod conductors 1 end to end through the connecting ends to form a long metal rod that can be extended infinitely.

[0033] Due to the special shapes and different bevel angles of the raised end 11 and the groove end 12, when the raised end 11 is radially inserted into the groove end 12, an expansion gap 13 is left at the connection between the two to allow a small amount of axial movement of the two metal rods, so as to reduce friction when connecting and disconnecting the metal rods, facilitate operation and increase efficiency.

[0034] Step 3: Insulation processing: The connected metal rods are pulled through the pay-off track 2 to the extruder head 3 for continuous insulation extrusion.

[0035] Furthermore, a triangular steel bracket 4 is provided in front of the line-laying crawler traction 2. The connected metal rods are held up by the triangular steel bracket 4, and the tail ends are continuously connected to the metal rods, thereby realizing continuous processing, cooperating with manual semi-automatic processing, with low cost and high efficiency.

[0036] Step 4, splitting the metal rod insulation 7: After the metal rod insulation 7 is pulled by the take-up crawler 5, the insulation at the connection is peeled off and the metal rod insulation 7 is split and restored into short sections.

[0037] Furthermore, a cooling water trough 6 is provided between the extruder head 3 and the take-up crawler traction 5. The metal rod insulation 7 extruded by the extruder head 3 is cooled by the cooling water trough 6, and the cooled and formed metal rod insulation 7 is split into initial short segments, thereby realizing continuous processing of short-segment metal rod insulation.

[0038] In summary, the above-mentioned continuous processing method for extruding insulation of short-segment metal rods realizes the continuous extrusion of 2-meter short-segment metal rod insulation without the need for winding and unwinding reels, and the metal rod will not bend or deform; the continuous extrusion of short-segment metal rods is 15 to 20 times more efficient than conventional extrusion; the connection is a detachable structure, the eccentricity and outer diameter of the insulation are easy to control, the connection is firm and reliable, the outer diameter of the metal rod is not increased, the connection and splitting do not damage the metal rod, and the connection is set at different angles to form expansion joints, making connection and splitting more convenient; connecting the metal rod while extruding the insulation can achieve continuous extrusion of insulation without stopping the machine, providing a new idea for the insulation processing of short-segment metal rods.

[0039] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to these examples. Various modifications and variations are possible without departing from the spirit and scope of the present invention. Such modifications and variations are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous processing method for insulating and extruding a 2-meter short metal rod, characterized in that: Including steps: Cutting the two ends of a short metal rod conductor to form detachable connection ends; The metal rod conductors are connected end to end through the connecting ends to form a long metal rod that can be extended infinitely; The connected metal rods are pulled to the extruder head via the pay-off track for continuous insulation extrusion; After the metal rod insulation is pulled by the take-up track, the insulation at the connection is stripped and the rod is split and restored into short sections. The connection end of each metal rod conductor is convex at one end and concave at the other end. The convex end of one metal rod conductor is connected to the concave end of the other metal rod conductor in a dovetail joint. An expansion joint is left at the connection between the convex end and the concave end to allow the two metal rods to move axially.

2. The method for continuous processing of 2-meter short-segment metal rod insulation extrusion according to claim 1, characterized in that: The angle between the inclined surface of the protruding end and the cross section of the metal rod is 80° to 85°, the angle between the inclined surface of the groove end and the cross section of the metal rod is 70° to 75°, and the angle between the inclined surface of the groove end and the cross section of the metal rod is smaller than the angle between the inclined surface of the protruding end and the cross section of the metal rod.

3. The method for continuous processing of 2-meter short-segment metal rod insulation extrusion according to claim 1, characterized in that: The convex section of the convex end and the concave section of the groove end are correspondingly isosceles trapezoidal, and the short base of the isosceles trapezoid is 50% to 60% of the diameter of the metal rod, and the long base is 70% to 80% of the diameter of the metal rod.

4. The method for continuous processing of 2-meter short-segment metal rod insulation extrusion according to claim 1, characterized in that: A triangular steel bracket is provided in front of the line-releasing crawler traction, and the connected metal rods are supported by the triangular steel bracket, and the tail ends are continuously connected to the metal rods.

5. The method for continuous processing of 2-meter short-segment metal rod insulation extrusion according to claim 1, characterized in that: A cooling water trough is provided between the extruder head and the take-up crawler traction, and the insulation of the metal rod extruded by the extruder head is cooled by passing through the cooling water trough.

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