Wire extruder with temperature control

Abstract

The utility model belongs to wire extruder technical field, concretely relates to a wire extruder with temperature control effect, including extrusion cylinder and the multiple temperature control mechanisms of installation in the extrusion cylinder outside, and temperature control mechanism includes the half shell of two upper and lower symmetry settings that are wrapped in the extrusion cylinder outside, the half shell on the top fixed has the tuyere, the cooling fan is installed on the tuyere, and temperature control mechanism still includes two upper and lower symmetry settings cooling assembly and the multiple far infrared heating pipes of half shell inside installation. The utility model discloses through setting up the rectangular transparent box in the half shell bottom of being located below, so that when the cooling coil leaks, the operator only needs to observe whether there is liquid in the rectangular transparent box, can fast judge whether the cooling coil exists leakage, in addition, when the cooling coil needs to clean or replace, only needs to remove the fixed bolt between the mounting seat and the half shell, then the cooling coil is pulled out from the sleeve and can complete the disassembly, does not need to dismantle the half shell integrally.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire extruders, specifically relating to a wire extruder with temperature control. Background Technology

[0002] In the extrusion molding process of wires and cables, the temperature control of the extrusion barrel has a direct impact on the plasticizing quality of the plastic melt, extrusion stability, and the size and appearance of the finished product. A common practice is to install a heating device on the outside of the extrusion barrel of the wire and cable extruder, using an electric heating block to heat the extrusion barrel, while simultaneously using water cooling, air cooling, or other methods to regulate the temperature and maintain the extrusion barrel temperature within a relatively stable process range.

[0003] A search revealed that, for example, Chinese patent CN223236933U describes a heating device for a cable extruder. This device consists of several heating blocks mounted on the outside of the extrusion cylinder. Each heating block is formed by two upper and lower shells enclosing a jacket structure. The jacket and the outer wall of the extrusion cylinder form an annular inner cavity. Far-infrared heating tubes are arranged within this inner cavity to provide far-infrared radiation heating to the extrusion cylinder. Simultaneously, a cooling coil is wound around the inner cavity, with both ends of the cooling coil extending outwards through the jacket and connected to a cooling medium delivery pipeline. When cooling is required, cooling medium is introduced into the coil to achieve water cooling. An air inlet is also provided on the side of the jacket, and a cold air blower is installed to blow cold air into the inner cavity, allowing the extrusion cylinder to achieve combined temperature control through far-infrared heating, water cooling coils, and air cooling.

[0004] However, some practical problems and shortcomings still exist:

[0005] On the one hand, the cooling coil and the far-infrared heating tube are both located in the inner cavity between the jacket and the extrusion cylinder. When the cooling coil leaks due to aging, scaling and corrosion or poor assembly, the cooling medium tends to accumulate in the bottom area of ​​the inner cavity first. There is no special drainage guidance and collection structure, which makes it difficult to drain in time. If the accumulated liquid stays in the jacket for a long time, it can easily approach the far-infrared heating tube, which poses certain electrical safety hazards and insulation risks.

[0006] On the other hand, the jacket is usually a closed structure, making it difficult for operators to observe whether there is cooling medium accumulation at the bottom of the inner cavity in a timely manner from outside the equipment. When micro-seepage or local leakage occurs in the cooling coil, it can often only be inferred through indirect phenomena such as abnormal temperature and pressure changes, or the jacket can be disassembled and the cooling coil removed after shutdown for inspection one by one. The fault diagnosis cycle is long and the workload is large, which is not conducive to the continuous and stable operation of the production line.

[0007] In addition, the cooling coil is fixedly connected to the jacket, and the coil is wound in multiple turns on the outside of the extrusion barrel. Once the internal scaling is severe or there is local damage, the heating block needs to be disassembled as a whole or the coil needs to be removed in groups. The disassembly and assembly steps are cumbersome, take up a long downtime, and have high maintenance costs, especially when a single coil needs to be cleaned or replaced. Utility Model Content

[0008] The purpose of this invention is to provide a wire extruder with temperature control. By setting a rectangular transparent box at the bottom of the lower half-shell, when the cooling coil leaks, the operator only needs to observe whether there is liquid inside the rectangular transparent box to quickly determine whether the cooling coil is leaking, thereby shortening the fault diagnosis time. In addition, when the cooling coil needs to be cleaned or replaced, it is only necessary to remove the fixing bolts between the mounting base and the half-shell and then pull the cooling coil out of the sleeve to complete the disassembly. There is no need to disassemble the entire half-shell, making the maintenance process simple and efficient.

[0009] The specific technical solution adopted by this utility model is as follows:

[0010] A wire extruder with temperature control includes an extrusion cylinder and multiple temperature control mechanisms installed on the outside of the extrusion cylinder. Each temperature control mechanism includes two symmetrically arranged semi-shells surrounding the outside of the extrusion cylinder. An air vent is fixed to the upper semi-shell, and a cooling fan is installed on the air vent. The temperature control mechanism also includes two symmetrically arranged cooling components and multiple far-infrared heating tubes installed inside the semi-shells. The far-infrared heating tubes inside the two semi-shells are symmetrically arranged vertically. Each cooling component includes two conveying pipes, four of which are located at opposite ends of the two semi-shells. Each end of the conveying pipe is fixed with a mounting base, which is bolted to the semi-shell. Multiple cooling coils are detachably connected between the two conveying pipes in the cooling component, and these cooling coils penetrate the inside of the semi-shells. A connecting pipe is installed on the outside of the conveying pipes. A rectangular transparent box is fixed to the bottom of the lower semi-shell.

[0011] One end of the far-infrared heating tube is fixed with a connecting seat, which is fixedly connected to the inner wall of the half-shell by bolts.

[0012] Both ends of the cooling coil are fitted with sleeves, which are connected to the delivery pipe.

[0013] A limiting ring is fixed to the inner side of the sleeve, and an elastic sealing gasket is fixed to the end of the limiting ring away from the conveying pipe.

[0014] Both ends of the half-shell are provided with through holes for the cooling coil to pass through, and both ends of the cooling coil are fixed with elastic pads.

[0015] The technical effects achieved by this utility model are as follows:

[0016] This invention features a rectangular transparent box at the bottom of the lower half-shell. When the cooling coil leaks, the cooling medium is collected in the rectangular transparent box under gravity. Operators only need to observe whether there is liquid inside the rectangular transparent box to quickly determine if there is a leak in the cooling coil, thus shortening the fault diagnosis time. In addition, when the cooling coil needs to be cleaned or replaced, it is only necessary to remove the fixing bolts between the mounting base and the half-shell to properly separate the delivery pipe from the half-shell, and then pull the cooling coil out of the sleeve to complete the disassembly. There is no need to disassemble the entire half-shell, making the maintenance process simple and efficient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure on the half-shell in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure on the conveying pipe in this utility model;

[0020] Figure 4 This is a schematic diagram showing the separation of the conveying pipe and the cooling coil in this utility model;

[0021] Figure 5 This is a cross-sectional view of the inside of the sleeve in this utility model;

[0022] Figure 6 This is an internal sectional view of the half-shell in this utility model;

[0023] Figure 7 This is a schematic diagram of the connection between the connector and the far-infrared heating tube in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Extrusion cylinder; 2. Half-shell; 3. Far-infrared heating tube; 4. Connecting seat; 5. Conveying pipe; 6. Cooling coil; 7. Sleeve; 8. Mounting seat; 9. Connecting pipe; 10. Three-way valve pipe; 11. Limiting ring; 12. Elastic sealing ring; 13. Rectangular transparent box; 14. Block; 15. Air outlet; 16. Cooling fan; 17. Elastic pad; 18. Elastic sealing ring. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] like Figure 1-7As shown, a wire extruder with temperature control includes an extrusion cylinder 1 and several temperature control mechanisms arranged along the axial direction of the extrusion cylinder 1, with each temperature control mechanism sleeved on the outside of the extrusion cylinder 1.

[0028] The temperature control mechanism includes two opposing half-shells 2, which are arranged symmetrically vertically. Flange structures are provided on the opposite ends of the two half-shells 2, and the two opposing flange structures are fixedly connected by bolts. In use, the two half-shells 2 are clamped and fixed to the outer periphery of the extrusion cylinder 1, thereby forming a covering structure around the extrusion cylinder 1.

[0029] In addition, elastic sealing rings 18 are fixed at both ends of the half shell 2. When the two half shells 2 are clamped and fixed on the outer periphery of the extrusion cylinder 1, the elastic sealing rings 18 are deformed by force and undergo phase change between the half shell 2 and the extrusion cylinder 1, thereby sealing the gap between the half shell 2 and the extrusion cylinder 1 and improving the sealing performance between the extrusion cylinder 1 and the half shell 2.

[0030] like Figure 2 and Figure 6 As shown, multiple far-infrared heating tubes 3 are installed on the inner side of each half shell 2. The multiple far-infrared heating tubes 3 are arranged around the extrusion cylinder 1 in a circumferential manner and are symmetrically paired in the vertical direction, so that the extrusion cylinder 1 can be heated in both the upper and lower regions.

[0031] One end of each far-infrared heating tube 3 is fixed to the inner wall of the corresponding half shell 2 via a connecting seat 4. The connecting seat 4 is fixedly connected to the half shell 2 via positioning bolts, which is used for positioning and supporting the far-infrared heating tube 3.

[0032] like Figure 3 and Figure 4 As shown, the temperature control mechanism also includes two symmetrical cooling components. Each cooling component includes two delivery pipes 5. The four delivery pipes 5 are respectively arranged at both ends of the two half shells 2. Both ends of the delivery pipes 5 are fixed with mounting seats 8. The mounting seats 8 are fixedly connected to the half shells 2 by fixing bolts, so that both ends of the delivery pipes 5 are fixed on the half shells 2.

[0033] In the same cooling component, two oppositely arranged conveying pipes 5 are detachably connected to multiple cooling coils 6. The multiple cooling coils 6 are arranged around the outer periphery of the extrusion cylinder 1 and penetrate the inner side of the half shell 2. When water cooling is required, the cooling medium flows into the cooling coils 6 through one of the conveying pipes 5 and then into another conveying pipe 5, thereby circumferentially cooling the outer periphery of the extrusion cylinder 1.

[0034] like Figure 5 As shown, sleeves 7 are inserted into the outer sides of both ends of the cooling coil 6. The sleeves 7 are fixedly connected to the corresponding delivery pipes 5, so that the cooling coil 6 can achieve detachable fluid communication with the delivery pipes 5 through the sleeves 7.

[0035] In addition, a limiting ring 11 is fixed inside the sleeve 7. An elastic sealing gasket 12 is fixed at the end of the limiting ring 11 away from the delivery pipe 5. When the cooling coil 6 is inserted into the sleeve 7, the end of the cooling coil 6 abuts against the limiting ring 11 to limit the insertion depth of the cooling coil 6.

[0036] At the same time, the elastic sealing gasket 12 fits tightly with the port of the cooling coil 6 to seal the plug-in connection and reduce the leakage of cooling medium from the plug-in connection.

[0037] Both ends of the half-shell 2 are provided with through holes that are compatible with the outer diameter of the cooling coil 6. Both ends of the cooling coil 6 extend through the through holes to the outside of the half-shell 2. Elastic pads 17 are fixed on the outer sides of both ends of the cooling coil 6. The elastic pads 17 are placed between the cooling coil 6 and the half-shell 2 to seal the gap between the cooling coil 6 and the half-shell 2, thereby reducing heat leakage during heating.

[0038] like Figure 3 As shown, a connecting pipe 9 is installed on the outside of the conveying pipe 5. A three-way valve pipe 10 is fixed between the two connecting pipes 9 on the same side by connecting bolts. The three-way valve pipe 10 connects the flow channels of the two connecting pipes 9 together. The valve structure can realize the convergence and distribution of the cooling medium in the two conveying pipes 5.

[0039] like Figure 2 As shown, an air vent 15 is fixed on the upper half-shell 2, and a cooling fan 16 is installed on the outside of the air vent 15. The air outlet of the cooling fan 16 is connected to the air vent 15. When air cooling is required, the cooling fan 16 blows cold air into the half-shell 2 through the air vent 15. The cold air flows around inside the half-shell 2, thereby cooling the outer surface of the extrusion cylinder 1 and the surrounding components.

[0040] like Figure 6 As shown, an installation groove is opened at the bottom of the lower half shell 2, and a rectangular transparent box 13 is fixed in the installation groove. When the cooling coil 6 leaks, the cooling medium will drip down and collect in the rectangular transparent box 13. Since the rectangular transparent box 13 is transparent, the operator can directly observe whether there is liquid accumulation in the rectangular transparent box 13 so as to judge whether there is leakage in time.

[0041] In addition, a drain hole is provided at the bottom of the rectangular transparent box 13, and a plug 14 is inserted into the drain hole;

[0042] When it is necessary to drain the accumulated liquid, remove the block 14 to allow the accumulated liquid to drain from the bottom of the rectangular transparent box 13;

[0043] A temperature sensor is installed on the half-shell 2, with the sensing end of the temperature sensor located inside the half-shell 2. A temperature sensor is also installed on the extrusion cylinder 1, with the sensing end of the temperature sensor located inside the extrusion cylinder 1.

[0044] The temperature sensor, half-shell 2, cooling fan 16 and far-infrared heating tube 3 mentioned above are all existing mature technologies, disclosed in Chinese patent CN223236933U, a heating device for a cable extruder.

[0045] In use, the extrusion cylinder 1 is heated by controlling the on / off state of the far-infrared heating tube 3, so that the extrusion cylinder 1 reaches the required extrusion temperature;

[0046] When the temperature is too high or cooling is required, the cooling medium is introduced through the cooling circuit formed by the conveying pipe 5 and the cooling coil 6, or the cooling fan 16 is turned on to blow cold air into the interior through the air outlet 15. If necessary, the cooling medium can be introduced through the cooling circuit formed by the conveying pipe 5 and the cooling coil 6 and the cooling fan 16 can be turned on at the same time to achieve rapid cooling.

[0047] When the cooling coil 6 needs to be cleaned or replaced, simply remove the fixing bolts between the mounting base 8 and the half shell 2 to properly separate the delivery pipe 5 from the half shell 2, and then pull the cooling coil 6 out of the sleeve 7 to complete the disassembly. There is no need to completely disassemble the half shell 2, making the maintenance process simple.

[0048] In summary, by setting a rectangular transparent box 13 at the bottom of the lower half-shell 2, this utility model allows the cooling medium to be quickly discharged into and collected in the rectangular transparent box 13 under the action of gravity when the cooling coil 6 leaks. Operators only need to observe whether there is liquid in the rectangular transparent box 13 to quickly determine whether the cooling coil 6 is leaking. Preliminary troubleshooting can be completed without disassembling the half-shell 2, thereby shortening the fault diagnosis time.

[0049] When the cooling coil 6 needs to be cleaned or replaced, simply remove the fixing bolts between the mounting base 8 and the half shell 2 to properly separate the delivery pipe 5 from the half shell 2, and then pull the cooling coil 6 out of the sleeve 7 to complete the disassembly. There is no need to completely disassemble the half shell 2, making the maintenance process simple and efficient.

[0050] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A wire extruder with temperature control, comprising an extrusion cylinder (1) and a plurality of temperature control mechanisms installed on the outside of the extrusion cylinder (1), wherein the temperature control mechanism comprises two symmetrically arranged semi-shells (2) surrounding the outside of the extrusion cylinder (1), an air vent (15) is fixed on the upper semi-shell (2), and a cooling fan (16) is installed on the air vent (15), characterized in that: The temperature control mechanism also includes two cooling components arranged symmetrically on top and bottom and multiple far-infrared heating tubes (3) installed inside the half shell (2). The far-infrared heating tubes (3) inside the two half shells (2) are arranged symmetrically on top and bottom. The cooling components include two conveying pipes (5). The four conveying pipes (5) are located at both ends of the two half shells (2). Both ends of the conveying pipes (5) are fixed with mounting bases (8). The mounting bases (8) are fixedly connected to the half shells (2) by bolts. Multiple cooling coils (6) are detachably connected between the two conveying pipes (5) in the cooling components. The cooling coils (6) penetrate the inside of the half shells (2). A connecting pipe (9) is installed on the outside of the conveying pipes (5). A rectangular transparent box (13) is fixed at the bottom of the lower half shell (2).

2. The wire extruder with temperature control as described in claim 1, characterized in that: One end of the far-infrared heating tube (3) is fixed with a connecting seat (4), and the connecting seat (4) is fixedly connected to the inner wall of the half shell (2) by bolts.

3. The wire extruder with temperature control according to claim 1, characterized in that: Both ends of the cooling coil (6) are fitted with sleeves (7), which are connected to the conveying pipe (5).

4. The wire extruder with temperature control according to claim 3, characterized in that: A limiting ring (11) is fixed to the inner side of the sleeve (7), and an elastic sealing gasket (12) is fixed to the end of the limiting ring (11) away from the delivery pipe (5).

5. The wire extruder with temperature control according to claim 1, characterized in that: Both ends of the half shell (2) are provided with through holes for the cooling coil (6) to pass through, and both ends of the cooling coil (6) are fixed with elastic pads (17).

6. The wire extruder with temperature control according to claim 1, characterized in that: The bottom of the rectangular transparent box (13) is fitted with a block (14), and both ends of the half shell (2) are fixed with elastic sealing rings (18).

7. The wire extruder with temperature control according to claim 1, characterized in that: A three-way valve pipe (10) is fixed between the two connecting pipes (9) on the same side by fasteners.

Images