High light aluminum alloy decorative part extrusion processing device

Abstract

The utility model discloses a high light aluminum alloy decoration part extrusion processing device belongs to metal material processing technical field. Include: extruder and cooling box, is equipped with quenching transfer area between both, heating incubator is set up in quenching transfer area, and the axial both ends of heating incubator are provided with the passageway mouth of the channel for section bar, and the inner wall of heating incubator is equipped with electric heating wire and is used for detecting the thermocouple of air temperature in the box, and heating incubator still is equipped with infrared thermometer for detecting section bar temperature, temperature control system, thermocouple, infrared thermometer and electric heating wire are electrically connected with temperature control system respectively, and temperature control system configuration is: based on infrared thermometer detection section bar temperature and thermocouple detection air temperature, the on -off of electric heating wire is controlled correspondingly. Control the temperature of tail section bar through heating incubator, avoid the abnormal segregation of strengthening phase and the uneven organization caused by natural cooling, reduce the tail length that needs to cut off, improve material utilization and extrusion material rate.

Description

Technical Field

[0001] This utility model belongs to the field of metal material processing technology, specifically relating to a home-use grip strength rehabilitation device with adjustable resistance. Background Technology

[0002] After anodizing, aluminum alloy materials not only have significantly improved corrosion resistance, but also retain the original natural luster of the metal, and have a uniform and delicate surface texture, resulting in excellent decorative effects. Therefore, they are widely used in the field of automotive trim parts.

[0003] 6401 high-gloss aluminum alloy belongs to the grade in European standard EN573-3. After anodizing, its extruded profiles can achieve a gloss level of over 600 GU. It is commonly used in luxury car trim parts where high surface gloss is required, such as window deflectors, trim strips, and roof racks. During the extrusion process of these parts, the tail section of the profile often exhibits numerous appearance defects. To ensure the quality of the anodized product, it is usually necessary to cut off 2 to 5 meters of the tail section, resulting in a decrease in the extrusion yield.

[0004] Currently, in the industry, when processing 6401 aluminum alloy, to ensure the surface quality after oxidation, the entire tail section of the profile corresponding to the quenching transfer zone (i.e., the section approximately 2-5 meters from the die exit to the quenching zone) is cut off and scrapped. The main reason for the substandard quality of this section is that during the aluminum bar replacement process, the profile in the original quenching transfer zone is directly exposed to air for natural cooling. After the bar replacement is completed (15-25 seconds), when extrusion is restarted, the temperature of the profile entering the quenching zone is insufficient, causing some strengthening phases (such as Mg2Si) to precipitate prematurely. The precipitation of strengthening phases leads to:

[0005] (1) The strength of this part is lower than that of normal materials, resulting in the material hardness not meeting the standard, or during the bending process, the difference in strength leads to poor dimensions after bending.

[0006] (2) During the oxidation process, especially for high-gloss materials like 6401, the gloss is significantly lower than that of normal products due to the precipitation of the reinforcing phase, which ultimately leads to poor product consistency and scrap.

[0007] Therefore, under the current process, in order to ensure the consistency of the final product's appearance, the tail section has to be completely cut off when producing 6401 aluminum alloy extruded profiles, resulting in a significant decrease in yield. Utility Model Content

[0008] This utility model addresses the aforementioned problems in the existing technology by proposing a high-gloss aluminum alloy decorative parts extrusion processing device that reduces waste from tail material removal and improves the extrusion yield.

[0009] This utility model can be achieved through the following technical solutions:

[0010] An extrusion processing apparatus for high-gloss aluminum alloy decorative parts, comprising:

[0011] The extruder and the cooling box are connected by a quenching transfer zone.

[0012] A heating and heat preservation box is disposed in the quenching transfer area. The heating and heat preservation box has channels at both axial ends for the profile to pass through.

[0013] The inner wall of the heating and insulation box is equipped with an electric heating wire and a thermocouple for detecting the temperature of the air inside the box. The heating and insulation box is also equipped with an infrared thermometer for detecting the temperature of the profile.

[0014] A temperature control system is provided, wherein the thermocouple, infrared thermometer, and electric heating wire are electrically connected to the temperature control system, and the temperature control system is configured to control the on / off state of the electric heating wire based on the profile temperature detected by the infrared thermometer and the air temperature detected by the thermocouple.

[0015] As a further improvement of this utility model, the front and rear end faces of the heating and heat preservation box are provided with contoured heat insulation plates along the axial direction.

[0016] As a further improvement of this utility model, the two ends of the heating and heat preservation box are respectively connected to the extruder and the cooling box through the conformal heat insulation plate, so that the extruder, the heating and heat preservation box and the cooling box form a continuous and sealed quenching transfer channel.

[0017] As a further improvement of this utility model, the channel opening is located at the bottom center of the contoured heat insulation plate.

[0018] As a further improvement of this utility model, the shape of the channel opening is adapted to the shape of the profile.

[0019] As a further improvement of this utility model, the top surface of the heating and heat preservation box, as well as the left and right sides along its axial direction, are provided with heat preservation and heat insulation layers.

[0020] As a further improvement of this utility model, the top of the heating and insulation box is provided with a through hole, and the infrared thermometer detects the temperature of the profile through the through hole.

[0021] As a further improvement of this utility model, the thermocouple is inserted inward from the top or side of the heating and insulation box.

[0022] As a further improvement of this utility model, the electric heating wire is installed on the inner wall of the left and right sides of the heating and heat preservation box along the axial direction.

[0023] As a further improvement of this utility model, the cooling box is provided with an air-cooling mechanism or a water-cooling mechanism.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Significantly improve yield and reduce production costs: The tail section of the profile is actively heated by a heating and insulation box to maintain a suitable temperature before entering the quenching zone. This avoids abnormal precipitation of strengthening phase and uneven structure caused by natural cooling, thereby greatly reducing the length of tail material that must be removed to ensure surface quality and significantly improving material utilization and extrusion yield.

[0026] 2. Comprehensive improvement of product surface quality and consistency: The device constructs a continuous and sealed quenching transfer channel, combined with a closed-loop temperature control system with dual feedback of infrared thermometer and thermocouple, to ensure that the profile is heated evenly and stably throughout the entire length direction (especially the tail section), and the solution treatment is sufficient. After anodizing, the surface gloss is consistently higher than 600GU, with no color difference, haze or uneven oxidation, meeting the stringent requirements of high-end automotive trim parts for appearance consistency.

[0027] 3. Enhanced process stability and energy efficiency: Multi-directional thermal insulation layers and contoured sealing structure effectively reduce heat loss, reduce frequent start-stop of electric heating wires, and improve thermal efficiency; symmetrical arrangement of electric heating wires on the sidewalls avoids local overheating, and vertical infrared temperature monitoring ensures accurate temperature control. The overall system operates stably, is energy-efficient and reliable, which is conducive to achieving high-quality, continuous and automated production of high-gloss aluminum alloy profiles. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the high-gloss aluminum alloy decorative parts extrusion processing device of this utility model;

[0029] Figure 2 This is a structural schematic diagram of the heating and insulation box of this utility model;

[0030] Figure 3 This is a cross-sectional view of the heating and insulation box of this utility model.

[0031] In the diagram, 100 is the extruder; 200 is the cooling box; 300 is the heating and insulation box; 310 is the electric heating wire; 320 is the thermocouple; 330 is the infrared thermometer; 340 is the contoured heat insulation board; 350 is the heat insulation layer; and 400 is the profile. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0033] like Figures 1-3 As shown, this utility model provides an extrusion processing device for high-gloss aluminum alloy decorative parts, comprising:

[0034] The extruder 100 and the cooling box 200 are connected by a quenching transfer zone;

[0035] A heating and heat preservation box 300 is located in the quenching transfer zone. The heating and heat preservation box 300 has channels at both axial ends for the profile 400 to pass through.

[0036] The inner wall of the heating and insulation box 300 is equipped with an electric heating wire 310 and a thermocouple 320 for detecting the temperature of the air inside the box. The heating and insulation box 300 is also equipped with an infrared thermometer 330 for detecting the temperature of the profile 400.

[0037] The temperature control system includes thermocouple 320, infrared thermometer 330, and electric heating wire 310, which are electrically connected to the temperature control system. The temperature control system is configured to control the on / off state of the electric heating wire 310 based on the temperature of the profile 400 detected by the infrared thermometer 330 and the air temperature detected by the thermocouple 320.

[0038] Specifically, the temperature control system uses the surface temperature of the profile 400, detected in real time by the infrared thermometer 330, as the core feedback signal. Combined with the internal air temperature of the heating and insulation box 300 monitored by the thermocouple 320, it performs comprehensive judgment and dynamic adjustment. The judgment method is as follows:

[0039] When the infrared thermometer 330 detects that the temperature of the profile 400 passing through the channel is lower than the set target value, the temperature control system automatically starts the electric heating wire 310 to heat up the air temperature inside the chamber, so that the temperature of the profile 400 gradually rises and approaches the process requirements.

[0040] Conversely, if the temperature of the profile 400 is close to or slightly higher than the target value, the system will reduce the heating power or cut off the power supply of the electric heating wire 310 according to the preset control logic to avoid overheating leading to defects such as overburning or grain coarsening.

[0041] In addition, the system can use air temperature (thermocouple 320 data) to help determine the stability of the heating environment, preventing control deviations caused by lag in ambient temperature, thereby achieving closed-loop precise temperature control based on the actual state of profile 400.

[0042] The key to this control method is that it does not rely on a single parameter of air temperature, but takes the body temperature of the profile 400 as the direct control target. This ensures that even under transient conditions such as bar changing, start-up, shutdown, or cross-sectional changes, the tail section of the profile 400 can still maintain a suitable temperature before entering the quenching zone, thus ensuring the consistency of subsequent heat treatment effects.

[0043] Overall, the device provided in this embodiment has at least the following advantages:

[0044] 1. Significantly reduce tail material cutting length and improve yield: By actively heating to compensate for heat loss during the bar changing process, the tail section profile 400 is kept at the temperature required for quenching before entering the cooling box 200. This effectively suppresses the abnormal precipitation of strengthening phases such as Mg2Si, avoids structural defects caused by insufficient temperature and the decrease in gloss after oxidation, and greatly reduces the amount of scrap tail material, thereby improving the extrusion yield.

[0045] 2. Improve product surface quality consistency and yield: The 400 profile has a uniform and stable temperature throughout the extrusion process (especially the tail section), which ensures the sufficiency and uniformity of the solution treatment. After anodizing, the surface gloss is stable at over 600 GU, with no obvious color difference or haze difference, meeting the stringent requirements of high-end automotive trim parts for appearance consistency, and significantly improving product yield and customer satisfaction.

[0046] Preferably, the front and rear end faces of the heating and insulation box 300 along the axial direction are provided with contoured heat insulation plates 340. The contoured heat insulation plates 340 are made of heat insulation materials with high temperature resistance and low thermal conductivity (such as ceramic fiber board or quartz felt composite material), and are installed on the inlet and outlet end faces of the heating and insulation box 300. This effectively reduces the loss of heat from the inside of the box to the external environment through the end face openings, while blocking the intrusion of cold air from the outside, and maintaining the uniformity and stability of the temperature field inside the box.

[0047] The passage opening is located at the bottom center of the contoured heat insulation plate 340, and the shape of the passage opening matches the cross-sectional profile of the profile 400. This ensures that the profile 400 is on a stable center line inside the heating and insulation box 300 when passing through, which helps maintain the smoothness of its running trajectory and the uniformity of heating. At the same time, the design of tightly covering and leaving a small gap minimizes air convection and heat loss between the heating area and the outside without affecting the smooth passage of the profile 400.

[0048] This structure further enhances the thermal sealing performance of the heating and insulation box 300, strengthens the uniformity and stability of the temperature field, ensures that the profile 400 is heated consistently along its length and cross-sectional direction, effectively prevents uneven structure and oxidation color difference caused by local cooling at the tail section, and improves the consistency of product surface quality; at the same time, it reduces energy consumption, improves heating efficiency, and reduces the risk of mechanical damage to the profile 400 during passage, which is conducive to achieving high-quality, continuous production of high-gloss aluminum alloy decorative parts.

[0049] In other words, the two ends of the heating and insulation box 300 are connected to the extruder 100 and the cooling box 200 respectively through the contoured heat insulation plate 340, so that the extruder 100, the heating and insulation box 300 and the cooling box 200 form a continuous and closed quenching transfer channel. This structure is tightly connected to the end faces of the front and rear equipment through the contoured heat insulation plate 340, forming an uninterrupted and low-leakage heat transfer path from the mold outlet to the quenching zone inlet, effectively isolating the entry of external cold air and the loss of internal heat.

[0050] After constructing a continuous and closed quenching transfer channel, the profile 400 is no longer exposed to room temperature during the bar changing process, avoiding the rapid cooling caused by air convection. Furthermore, the temperature of the profile 400 can be regulated by controlling the start and stop of the electric heating wire 310 through the temperature control system, which significantly improves the stability and uniformity of the temperature of the tail section profile 400.

[0051] Preferably, the top surface of the heating and insulation box 300, as well as the left and right sides along its axial direction, are provided with heat insulation layers 350, which effectively block the conduction and radiation of heat inside the box to the external environment through the metal box wall. This significantly reduces heat loss from the heating and insulation box 300, improves the thermal efficiency and temperature uniformity of the entire device, makes the temperature field inside the box more stable, reduces the frequent start-stop of the electric heating wire 310, and extends the life of the heating element.

[0052] Preferably, the top of the heating and insulation box 300 is provided with a through hole. The infrared thermometer 330 is vertically aligned with the surface of the profile 400 in the channel through this through hole to achieve non-contact real-time temperature measurement. The position of this through hole corresponds to the top center area of ​​the profile 400 when it passes through the channel, ensuring that the temperature measurement optical path is direct and unobstructed. This allows for the capture of the real-time temperature of the profile 400 surface, avoiding the influence of viewing angle deviation or local obstruction caused by lateral temperature measurement, and improving the temperature measurement accuracy and response speed.

[0053] Preferably, the thermocouple 320 is inserted into the heating and insulation box 300 from the top or side, with its temperature measuring end extending into the internal cavity of the box, for real-time monitoring of the temperature of the air medium inside the heating and insulation box 300.

[0054] Preferably, electric heating wires 310 are installed on the inner walls of the left and right sides of the heating and insulation box 300 along the axial direction. The electric heating wires 310 are evenly arranged in a spiral or serpentine pattern on the inner surface of the side walls to form a symmetrical and balanced heat source distribution. This arrangement allows heat to radiate and convect from the spaces on both sides of the profile 400 to the central area, and in conjunction with the air circulation inside the box, achieves uniform heating of the profile 400.

[0055] Arranging the electric heating wire 310 on the inner walls of the left and right sides can avoid scratching or local overheating caused by direct installation on the bottom and contact with the profile 400. At the same time, it is conducive to the symmetrical conduction of heat from both sides, reducing the temperature gradient on the cross section of the profile 400 and improving the heating uniformity of the profile 400.

[0056] Preferably, the cooling box 200 is equipped with an air-cooling mechanism or a water-cooling mechanism. Since the air-cooling mechanism or water-cooling mechanism is a conventional configuration for those skilled in the art, its specific structure will not be described in detail.

[0057] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments 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 are also considered within the scope of protection of this utility model.

[0058] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0059] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0061] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A high-gloss aluminum alloy decorative part extrusion processing device, characterized in that, include: The extruder and the cooling box are connected by a quenching transfer zone. A heating and heat preservation box is disposed in the quenching transfer area. The heating and heat preservation box has channels at both axial ends for the profile to pass through. The inner wall of the heating and insulation box is equipped with an electric heating wire and a thermocouple for detecting the temperature of the air inside the box. The heating and insulation box is also equipped with an infrared thermometer for detecting the temperature of the profile. A temperature control system is provided, wherein the thermocouple, infrared thermometer, and electric heating wire are electrically connected to the temperature control system, and the temperature control system is configured to control the on / off state of the electric heating wire based on the profile temperature detected by the infrared thermometer and the air temperature detected by the thermocouple.

2. The extrusion processing device for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The heating and insulation box is provided with contoured heat insulation plates on the front and rear ends along the axial direction.

3. The extrusion processing device for high-gloss aluminum alloy decorative parts according to claim 2, characterized in that, The two ends of the heating and heat preservation box are respectively connected to the extruder and the cooling box through the conformal heat insulation plate, so that the extruder, the heating and heat preservation box and the cooling box form a continuous and closed quenching transfer channel.

4. The extrusion processing device for high-gloss aluminum alloy decorative parts according to claim 2, characterized in that, The channel opening is located at the bottom center of the contoured heat insulation panel.

5. The extrusion processing device for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The shape of the channel opening is adapted to the shape of the profile.

6. The extrusion processing apparatus for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The top surface of the heating and insulation box, as well as the left and right sides along its axis, are provided with heat insulation layers.

7. The extrusion processing apparatus for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The top of the heating and insulation box is provided with a through hole, through which the infrared thermometer detects the temperature of the profile.

8. The extrusion processing apparatus for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The thermocouple is inserted into the heating and insulation box from the top or side.

9. The extrusion processing device for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The electric heating wire is installed on the inner wall of the left and right sides along the axial direction of the heating and insulation box.

10. The extrusion processing apparatus for high-gloss aluminum alloy decorative parts according to claim 1, characterized in that, The cooling box is equipped with an air-cooling mechanism or a water-cooling mechanism.

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