Wire cable multi-head extrusion mold

Abstract

The utility model discloses a multi-head extrusion mold for wires and cables, and belongs to the technical field of extrusion molds. A multi-head extrusion mold for wires and cables comprises a fixing cylinder, connecting seats are in threaded connection with the outer wall of the rear portion of the fixing cylinder, a feeding cylinder is clamped in front of the connecting seats, the tail ends of the multiple connecting cylinders are connected with forming cylinders respectively, and a cooling assembly is further in threaded connection with the outer wall of the fixing cylinder, so that the extrusion mold is more convenient to disassemble; according to the invention, liquid plastic can be supplied by a plurality of molds, later cleaning and maintenance are facilitated, the use convenience and practicability are effectively improved, a plurality of water injection nozzles can be utilized to carry out water cooling on a cable insulation layer, after water cooling is completed, external compressed gas is conveyed into a plurality of vortex cooling pipes, and the cooling efficiency is improved. And further air cooling is carried out, the cooling efficiency of the cable insulation layer after extrusion molding is effectively improved in a composite cooling mode, and cold air flow can blow away cooling water of the cable insulation layer, so that the retention of the cooling water is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion molds, and more specifically to a multi-head extrusion mold for wires and cables. Background Art

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information, and achieve electromagnetic energy conversion. In a broad sense, wires and cables are also referred to as cables. In a narrow sense, cables refer to insulated cables, which can be defined as a collection of the following parts: one or more insulated wire cores, and their respective coatings, protective layers, and outer sheaths. Cables may also have additional non-insulated layers.

[0003] During the processing of cables, an extruder is required to extrude an insulating sleeve on the surface of the conductor to protect the cable and provide insulation. The extruder can only supply liquid plastic to one mold when working, and does not have the function of diverting liquid plastic. That is, only one cable can be extruded at the same time, resulting in low processing efficiency, inconvenience for people to use, and low practicality.

[0004] In response to the above problems, application number 202221194942.X, application name is a multi-head extrusion device for wires and cables, which records a diversion mechanism, which includes a diversion block, a diversion bin is provided inside the diversion block, a diversion plate is fixedly connected to the inside of the diversion bin, a discharge pipe is fixedly connected to the inside of the diversion plate, a discharge hole connected to the diversion bin is provided at the bottom of the diversion block, an extrusion mold is fixedly connected to the bottom of the diversion block, and an insulation bin located at the top of the diversion bin is provided inside the diversion block. By setting the diversion mechanism and the feed port, the device solves the problem that the extruder can only supply liquid plastic to one mold when working and does not have the function of diverting liquid plastic. The device has the advantage of diverting liquid plastic, so that it can supply liquid plastic to multiple molds, and has the advantage of multi-head extrusion, thereby improving practicality, facilitating people's use, and improving extrusion efficiency.

[0005] Although the device has many beneficial effects, it still has the following problems: although the device can supply liquid plastic to multiple molds, it is often necessary to regularly clean the internal molds during the use of the extrusion device. This is because during the extrusion process, material may remain inside the mold. Over time, these residues may block the flow channels or channels of the mold, affecting the smooth extrusion process. The above-mentioned device structure is relatively complex and extremely inconvenient to disassemble, which brings a lot of inconvenience to the personnel in the subsequent cleaning work;

[0006] Moreover, after the cable insulation layer is extruded, it often needs to be cooled to a certain extent. The existing cooling methods mostly use cooling water for spray cooling, and the cooling effect is relatively single and poor. In addition, a large amount of sprayed cooling water will adhere to the outer wall of the cable insulation layer. These adhered cooling water will cause great troubles to the subsequent processing and use.

[0007] In view of this, we propose a multi-head extrusion die for wires and cables. Utility Model Content

[0008] 1. Technical problems to be solved

[0009] The purpose of the utility model is to provide a multi-head extrusion die for wires and cables, so as to solve the problems of inconvenient disassembly and cleaning, poor cooling effect and easy adhesion of cooling water in the above-mentioned background technology.

[0010] 2. Technical solution

[0011] A multi-head extrusion mold for wires and cables comprises a fixed cylinder, the rear outer wall of the fixed cylinder is threadedly connected to a connecting seat, the front outer wall of the connecting seat is provided with a threaded fixed seat, a wire body passing cylinder is fixedly sleeved inside the threaded fixed seat, a feeding cylinder is clamped in front of the connecting seat, a connecting cylinder is provided on the circumferential outer wall of the feeding cylinder, multiple ends of the connecting cylinders are respectively connected to forming cylinders, the outer wall of the fixed cylinder is also threadedly connected to a cooling assembly, and the cooling assembly includes a cooling bucket.

[0012] Preferably, an electric heating ring is provided in the inner cavity of the outer wall of the fixed cylinder, a rotating plate is rotatably connected to the interior of the fixed cylinder, and a through circular hole and a limiting slot are provided on the outer wall in front of the rotating plate.

[0013] Preferably, a fixing seat is provided on the front outer wall of the feed barrel, and a threaded limiting rod matching the limiting slot is threadedly connected to the front outer wall of the fixing seat.

[0014] Preferably, a water spray port is provided on the inner wall of the cooling hopper, water pipes are connected to both sides of the cooling hopper, and a water pump is sleeved on the outer wall of the water pipes.

[0015] Preferably, a supporting arc plate is provided on the front outer wall of the cooling hopper, a plurality of side walls of the supporting arc plates are provided with vortex cooling pipes, and a plurality of inner walls of the supporting arc plates are provided with air outlet holes.

[0016] Preferably, the plurality of wire bodies pass through the cylinder and extend into the interior of the plurality of forming cylinders respectively, and the plurality of forming cylinders are sleeved inside the plurality of through circular holes.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are that: when the extrusion mold needs to be disassembled and cleaned, it is only necessary to rotate the threaded limiting rod to a vertical state, and then rotate the fixed cylinder to separate the connecting seat from the fixed cylinder. Since the fixed cylinder is separated, the feed cylinder will lose the pressure of the rotating plate, and the feed cylinder carrying multiple molding cylinders can be easily taken out. During installation, on the contrary, the threaded limiting rod is used to limit and fix the fixed cylinder, which is more convenient for disassembly of the extrusion mold, and is more convenient for later cleaning and maintenance while meeting the supply of liquid plastic to multiple molds, effectively improving its convenience and practicality.

[0019] Secondly, after the cable insulation layer is extruded, multiple water pumps can be used in conjunction with water pipes to pump external cooling water, and multiple water nozzles can be used to water-cool the cable insulation layer. After the water cooling is completed, external compressed gas is transported to the interior of multiple vortex cooling tubes, so that the surface of the cable insulation layer can be further air-cooled by the formed cold air flow. The composite cooling method is used to effectively improve the cooling efficiency of the cable insulation layer after extrusion, and the cold air flow can blow away the cooling water of the cable insulation layer, reduce the retention of cooling water, and avoid a large amount of water stains from remaining and affecting the later processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal disassembled structure of the fixed cylinder of the present utility model;

[0022] Figure 3 This is a schematic diagram of the fixed cylinder structure of the utility model;

[0023] Explanation of the numbers in the figure: 100, fixed cylinder; 101, electric heating coil; 102, rotating plate; 103, limiting slot; 110, connecting seat; 120, wire passing cylinder; 130, feeding cylinder; 131, connecting cylinder; 132, fixed seat; 133, threaded limiting rod; 140, forming cylinder; 200, cooling hopper; 210, water pipe; 220, water pump; 230, water nozzle; 240, supporting arc plate; 250, vortex cooling pipe; 260, air outlet. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0027] See also Figure 1-3 , the utility model provides a technical solution:

[0028] A multi-head extrusion die for wires and cables, comprising a fixing cylinder 100, a connecting seat 110 being threadedly connected to the rear outer wall of the fixing cylinder 100, a threaded fixing seat 111 being provided on the front outer wall of the connecting seat 110, and a wire body passing cylinder 120 being fixedly sleeved inside the threaded fixing seat 111;

[0029] In some embodiments, the wire body passes through the barrel 120 for inserting the copper wire of the cable to facilitate extrusion of the insulation layer.

[0030] A feed cylinder 130 is clamped in front of the connecting seat 110, and a connecting cylinder 131 is provided on the circumferential outer wall of the feed cylinder 130. The ends of multiple connecting cylinders 131 are respectively connected to forming cylinders 140. The outer wall of the fixed cylinder 100 is also threadedly connected to a cooling component, which includes a cooling bucket 200.

[0031] Specifically, an electric heating ring 101 is provided in the inner cavity of the outer wall of the fixed cylinder 100, and a rotating plate 102 is rotatably connected inside the fixed cylinder 100. A through circular hole and a limiting slot 103 are opened on the outer wall in front of the rotating plate 102, which facilitates the use of the electric heating ring 101 to improve the fluidity of the injection molding material.

[0032] Furthermore, a fixing seat 132 is provided on the front outer wall of the feed barrel 130, and a threaded limiting rod 133 matching the limiting slot 103 is threadedly connected to the front outer wall of the fixing seat 132, so as to facilitate the threaded connection between the feed barrel 130 and the connecting seat 110.

[0033] Furthermore, a water spray port 230 is provided on the inner wall of the cooling bucket 200, and water pipes 210 are connected to both sides of the cooling bucket 200. A water pump 220 is connected to the outer wall of the water pipe 210 to facilitate the use of external cooling water to cool the outer wall of the cable after injection molding.

[0034] Furthermore, a supporting arc plate 240 is provided on the front outer wall of the cooling hopper 200 , eddy current cooling pipes 250 are provided on the side walls of the multiple supporting arc plates 240 , and air outlet holes 260 are opened on the inner walls of the multiple supporting arc plates 240 .

[0035] In some embodiments: the outer wall of the vortex cooling tube 260 is provided with an inlet for introducing a cooling medium, and one end of the vortex cooling tube 260 is provided with an outlet for discharging the cooled medium. The interior of the vortex cooling tube 260 is usually in a spiral or helical structure, which is used to guide the cooling medium to flow in the pipe and generate a vortex effect. Some cooling plates are also provided inside the vortex cooling tube 260 to increase the contact area between the cooling medium and the cooled object and improve the cooling effect. The vortex cooling tube 260 is usually wrapped in a shell made of metal or other high-temperature resistant materials to protect the internal structure of the pipe and prevent the cooling medium from leaking. The vortex cooling tube 260 can effectively transfer heat from the cooled object to the cooling medium, and quickly take away the heat through the vortex effect to achieve a rapid cooling effect. The above all belong to the existing technology, and the model can be selected from the vortex cooler XFSW0.

[0036] It is worth noting that the multiple wire bodies pass through the cylinder 120 and extend into the interior of the multiple forming cylinders 140 respectively. The multiple forming cylinders 140 are sleeved inside the multiple through circular holes, which facilitates better injection molding of the insulation layer on the surface of the cable copper wire.

[0037] In some embodiments: the electric heating coil 101 and the water pump 220 of the device are both controlled by an external controller, wherein the power supply can use an external conventional power supply, and the compressed gas is provided by an air compression pump, all of which belong to the existing technology.

[0038] In addition, the circuits, electronic components and modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and methods.

[0039] Working principle: First, when the extrusion mold needs to be disassembled and cleaned, it is only necessary to rotate the threaded limiting rod 133 to a vertical state, and then rotate the fixed cylinder 100 to make its connecting seat 110 separate from the fixed cylinder 100. Since the fixed cylinder 100 is separated, the feed cylinder 130 will lose the pressure of the rotating plate 102. At this time, the feed cylinder 130 carrying multiple molding cylinders 140 can be easily taken out. During installation, on the contrary, the threaded limiting rod 133 is used to limit and fix the fixed cylinder 100, which is more convenient for disassembly of the extrusion mold, and is more convenient for later cleaning and maintenance while meeting the supply of liquid plastic to multiple molds. Secondly, After the cable insulation layer is extruded, multiple water pumps 220 can be used in conjunction with the water pipe 210 to suck the external cooling water, and multiple water nozzles 230 can be used to water-cool the cable insulation layer. After the water cooling is completed, external compressed gas is transported to the interior of multiple vortex cooling tubes 250, so that the surface of the cable insulation layer can be further air-cooled by using the formed cold air flow. The composite cooling method is used to effectively improve the cooling efficiency of the cable insulation layer after extrusion, and the cold air flow can blow away the cooling water of the cable insulation layer, reduce the retention of cooling water, and avoid a large amount of water stains remaining to affect the later processing.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements 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 multi-head extrusion die for wires and cables, comprising a fixing cylinder (100), characterized in that: The rear outer wall of the fixed cylinder (100) is threadedly connected to a connecting seat (110), the front outer wall of the connecting seat (110) is provided with a threaded fixed seat (111), the threaded fixed seat (111) is fixedly sleeved with a wire body passing through the cylinder (120), the front of the connecting seat (110) is clamped with a feeding cylinder (130), the circumferential outer wall of the feeding cylinder (130) is provided with a connecting cylinder (131), and the ends of multiple connecting cylinders (131) are respectively connected to forming cylinders (140), and the outer wall of the fixed cylinder (100) is also threadedly connected to a cooling component, and the cooling component includes a cooling bucket (200).

2. The multi-head extrusion die for wires and cables according to claim 1, characterized in that: An electric heating ring (101) is provided in the inner cavity of the outer wall of the fixed cylinder (100), a rotating plate (102) is rotatably connected inside the fixed cylinder (100), and a through circular hole and a limiting slot (103) are provided on the outer wall in front of the rotating plate (102).

3. The multi-head extrusion die for wires and cables according to claim 2, characterized in that: A fixing seat (132) is provided on the front outer wall of the feed barrel (130), and a threaded limiting rod (133) matching the limiting slot (103) is threadedly connected to the front outer wall of the fixing seat (132).

4. The multi-head extrusion die for wires and cables according to claim 3, characterized in that: The inner wall of the cooling hopper (200) is provided with a water spray port (230), both sides of the cooling hopper (200) are connected with a water pipe (210), and the outer wall of the water pipe (210) is sleeved with a water pump (220).

5. The multi-head extrusion die for wires and cables according to claim 4, characterized in that: The front outer wall of the cooling hopper (200) is provided with a supporting arc plate (240), the side walls of the plurality of supporting arc plates (240) are all provided with vortex cooling pipes (250), and the inner walls of the plurality of supporting arc plates (240) are provided with air outlet holes (260).

6. The multi-head extrusion die for wires and cables according to claim 5, characterized in that: The plurality of wire bodies pass through the cylinder (120) and extend into the interior of the plurality of forming cylinders (140) respectively. The plurality of forming cylinders (140) are sleeved inside the plurality of through circular holes.

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