Annealing device for door and window aluminum alloy profile production

Abstract

The utility model relates to the technical field of annealing devices, and discloses an annealing device for door and window aluminum alloy profile production, which comprises a heating box and an electric stove wire, the electric stove wire is mounted in the heating box, a temperature sensor is further arranged in the heating box, and electric push rods are vertically mounted on two sides above the heating box. The extending end of the electric push rod penetrates into the heating box, a lifting plate is fixed to the tail end of the extending end of the electric push rod, an S-shaped copper pipe is fixed to the bottom of the lifting plate through a connecting rod, and a water inlet pipe and a water outlet pipe are connected to the two sides of the upper surface of the heating box correspondingly. According to the technical scheme, the lifting plate capable of being driven to ascend and descend is arranged in the heating box, the S-shaped copper pipe is fixed to the bottom of the lifting plate, and when an aluminum alloy profile needs to be cooled after being heated and subjected to heat preservation, the copper pipe is lowered to the position above the aluminum alloy profile; cold water flowing in the copper pipe is used for absorbing heat in the heating box to achieve the purpose of uniform cooling, and the cooling speed can be controlled by controlling the flow speed.

Description

Technical Field

[0001] This utility model relates to the technical field of annealing devices, specifically an annealing device for the production of aluminum alloy profiles for doors and windows. Background Technology

[0002] Aluminum alloy doors and windows refer to doors and windows made with aluminum alloy extruded profiles as frames, mullions, and sashes. They are also called aluminum doors and windows for short. Aluminum alloy doors and windows include those with aluminum alloy as the load-bearing member (the member that bears and transmits its own weight and load) and those made of wood or plastic composites, which are called aluminum-wood composite doors and windows or aluminum-plastic composite doors and windows. During the production process, aluminum alloy profiles need to be annealed. Annealing requires heating the aluminum alloy profiles to a specified temperature and holding them at that temperature for a period of time, and then cooling them down at a specified rate.

[0003] Existing technologies typically cool the material through natural cooling or air cooling. Natural cooling is difficult to control, while air cooling results in inconsistent cooling rates between the near and far air vents, potentially affecting product quality. Therefore, we propose an annealing device for the production of aluminum alloy profiles for doors and windows. Utility Model Content

[0004] The purpose of this utility model is to provide an annealing device for the production of aluminum alloy profiles for doors and windows. By setting a lifting plate that can be moved up and down inside the heating box, and fixing an S-shaped copper pipe at the bottom, when the aluminum alloy profile needs to be cooled after heating and heat preservation, the copper pipe is lowered to above the aluminum alloy profile. The flowing cool water in the copper pipe absorbs the heat inside the heating box to achieve uniform cooling. Moreover, the cooling rate can be controlled by controlling the flow rate, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an annealing device for the production of aluminum alloy profiles for doors and windows, comprising a heating box and an electric heating wire, wherein the electric heating wire is installed inside the heating box, and a temperature sensor is also installed inside the heating box; electric push rods are vertically installed on both sides of the upper part of the heating box, the protruding ends of the electric push rods penetrate into the interior of the heating box, and a lifting plate is fixed to the end of the protruding end of the electric push rod; an S-shaped copper tube is fixed to the bottom of the lifting plate by a connecting rod; an inlet pipe and an outlet pipe are respectively connected to both sides of the upper surface of the heating box, and the inlet pipe and the outlet pipe are respectively connected to the two ends of the copper tube by high-temperature resistant hoses; and an electrically controlled valve is also installed on the inlet pipe and the outlet pipe.

[0006] By adopting the above technical solution, after the aluminum alloy profile is heated and kept warm, the copper pipe is lowered to a position above the aluminum alloy profile, so that cool water flows through the inside of the copper pipe. The copper pipe absorbs heat, which is then absorbed by the heat inside the heating box to achieve uniform cooling. The cooling rate can be controlled by controlling the water flow rate.

[0007] Optionally, fins are fixed to the bottom surface of the copper tube, and the fins together with the copper tube are S-shaped.

[0008] By adopting the above technical solution, the fins and copper tubes can conduct heat well, which increases the heat exchange area between the fins and the air inside the heating chamber, resulting in higher heat absorption efficiency.

[0009] Optionally, the front end of the heating box is fitted with a rotatable door via a hinge.

[0010] By adopting the above technical solution, the door seals the opening at the front of the heating box during the heating and heat preservation process.

[0011] Optionally, a heat insulation plate is fixed on the upper surface of the heating box below the electric push rod, and the electric push rod is installed above the heat insulation plate.

[0012] By adopting the above technical solution, the circuit structure of the electric actuator is placed inside it, and the heat insulation plate reduces the heat transfer to the top of the electric actuator.

[0013] Optionally, heat-resistant bricks are attached and fixed to the inner wall surface of the heating box, and the thickness of the heat-resistant bricks is the same throughout.

[0014] By adopting the above technical solution, heat-resistant bricks achieve the purpose of heat insulation and heat preservation inside the heating box, reducing heat loss during the heating and heat preservation process.

[0015] Optionally, the surface of the heat-resistant brick is grooved, and the heating wire is installed in the groove.

[0016] By adopting the above technical solution, the heating element is prevented from protruding onto the outer surface of the heat-resistant brick.

[0017] Optionally, a pressure relief valve communicating with the interior is connected to the water inlet pipe below the electrically controlled valve.

[0018] By adopting the above technical solution, when there is no flowing water in the copper pipe but the inside of the heating box is heated, the pressure relief valve can release pressure when the water temperature inside the copper pipe is too high and the pressure increases, thus ensuring safe use.

[0019] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0020] 1. The technical solution of this application is to install a lifting plate that can be moved up and down inside the heating box, with an S-shaped copper pipe fixed at the bottom. When the aluminum alloy profile needs to be cooled after heating and heat preservation, the copper pipe is lowered to above the aluminum alloy profile. The flowing cool water in the copper pipe absorbs the heat inside the heating box to achieve the purpose of uniform cooling. The cooling rate can be controlled by controlling the flow rate to ensure that the cooling rate is controllable and achieves the purpose of uniform cooling.

[0021] 2. The technical solution of this application increases the contact area with the air inside the heating chamber by setting fins at the bottom of the copper tube, thereby making the heat absorption efficiency higher. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the annealing device for producing aluminum alloy profiles for doors and windows according to this utility model.

[0024] Figure 2 This is a schematic diagram of the internal structure of the heating box of the annealing device for producing aluminum alloy profiles for doors and windows according to this utility model;

[0025] Figure 3 This is a schematic diagram of the upper surface structure of the copper tube in the annealing device for producing aluminum alloy profiles for doors and windows according to this utility model;

[0026] Figure 4 This is a schematic diagram of the lower surface structure of the copper tube in the annealing device for producing aluminum alloy profiles for doors and windows according to this utility model.

[0027] In the diagram: 1. Heating box; 11. Insulation board; 12. Water inlet pipe; 121. Pressure relief valve; 13. Water outlet pipe; 14. Electrically controlled valve; 15. Door body; 2. Heat-resistant brick; 21. Grooving; 22. Heating wire; 3. Electric push rod; 31. Lifting plate; 311. Connecting rod; 4. Copper pipe; 41. Fin; 42. High-temperature resistant hose. Detailed Implementation

[0028] Please see Figure 1-4 This utility model provides a technical solution: an annealing device for the production of aluminum alloy profiles for doors and windows, including a heating box 1 and an electric heating wire 22. The electric heating wire 22 is installed inside the heating box 1. In order to achieve the purpose of heat preservation inside the heating box 1, heat-resistant bricks 2 are attached and fixed to the inner wall surface of the heating box 1. The thickness of the heat-resistant bricks 2 is the same everywhere, and the surface of the heat-resistant bricks 2 is provided with a groove 21. The electric heating wire 22 is installed in the groove 21 to prevent the electric heating wire 22 from protruding to the outer surface of the heat-resistant bricks 2, thus providing a certain protection for the electric heating wire 22. In addition, a rotatable door 15 is installed at the front opening of the heating box 1 through a hinge. After the door 15 is opened, aluminum alloy profiles can be put in or taken out. During heating, heat preservation and cooling, the door 15 is locked at the front of the heating box 1 using a latch. A temperature sensor is also installed inside the heating box 1 to monitor the temperature inside the heating box 1 in real time.

[0029] Electric push rods 3 are vertically installed on both sides of the upper part of the heating box 1. The protruding end of the electric push rod 3 extends into the interior of the heating box 1, and a lifting plate 31 is fixed to the end of the protruding end of the electric push rod 3. An S-shaped copper tube 4 is fixed to the bottom of the lifting plate 31 through a connecting rod 311. Multiple connecting rods 311 are set and evenly connected to the upper part of the copper tube 4. The lifting plate 31 can be driven to rise and fall inside the heating box 1 by the electric push rod 3, thereby achieving the purpose of raising and lowering the copper tube 4. In addition, a heat insulation plate 11 is fixed on the upper surface of the heating box 1 below the electric push rod 3. The electric push rod 3 is installed on the heat insulation plate 11, and the circuit structure of the electric push rod 3 is placed inside it. The heat insulation plate 11 reduces the heat transfer to the upper part of the electric push rod 3, and plays a certain role in heat insulation protection for the electric push rod 3.

[0030] Water inlet pipe 12 and water outlet pipe 13 are connected to the upper surface of heating box 1 on both sides respectively. Electrically controlled valves 14 are also installed on the water inlet pipe 12 and water outlet pipe 13. The water inlet pipe 12 and water outlet pipe 13 are connected to the two ends of copper pipe 4 via high-temperature resistant hose 42. This high-temperature resistant hose 42 is made of metal, and the presence of water inside enhances its high-temperature resistance. When the aluminum alloy profile needs to be cooled uniformly at the required speed, the copper pipe 4 is first lowered to a position above the aluminum alloy profile. Then, the opening degree of the electrically controlled valves 14 on the water inlet pipe 12 and water outlet pipe 13 is controlled according to the required cooling speed, thereby controlling the flow rate of cool water flowing through the copper pipe 4. When the flow rate is slow, the flow rate is made even slower; conversely, when a faster cooling rate is needed, the flow rate is made even faster. When the cool water passes through the S-shaped copper pipe 4, it can absorb the heat inside the heating chamber 1 through the copper pipe 4 and the fins 41 at its bottom. The efficiency of heat absorption is proportional to the flow rate of the cool water. In this way, since the aluminum alloy itself still dissipates heat into the heating chamber 1 through natural heat dissipation, the heat is absorbed by the copper pipe 4, so that the aluminum alloy itself can cool down evenly. The different rates at which the copper pipe 4 absorbs heat from the heating chamber 1 allow the aluminum alloy to dissipate heat into the heating chamber 1 faster or slower depending on the cooling rate inside the heating chamber 1. Ultimately, the heat emitted by the aluminum alloy profile is cooled and annealed evenly at a suitable rate.

[0031] A pressure relief valve 121 is connected to the water inlet pipe 12 below the electric control valve 14 and communicates with its interior. The pressure relief valve 121 is directly connected to the copper pipe 4. Therefore, when there is no clean water flowing in the copper pipe 4 and the heating box 1 is heated, the pressure relief valve 121 can release pressure when the water temperature inside the copper pipe 4 is too high and the pressure increases, thus ensuring safe use.

[0032] In addition, fins 41 are fixed on the bottom surface of the copper tube 4. The fins 41 and the copper tube 4 are S-shaped together. The fins 41 and the copper tube 4 can conduct heat well, which increases the heat exchange area between the fins 41 and the air inside the heating box 1, and the heat absorption efficiency is higher.

[0033] In use, connect the inlet pipe 12 to the cold water source and the outlet pipe 13 to the recycling pipe. The electric control valve 14, the heating element 22, the electric actuator 3, and the temperature sensor installed inside the heating chamber 1 are all connected to the industrial control computer. After opening the door 15, the aluminum alloy profile is placed inside the heating chamber 1. After closing and locking the door 15, the heating element 22 can be started to heat the aluminum alloy profile and then maintain the temperature for the required time. When cooling down, first stop the operation of the heating element 22, and control the electric actuator 3 to drive the lifting plate 31 and the copper pipe 4 at its bottom to descend. The height is close to the top of the aluminum alloy profile. The opening degree of the electric valve 14 on the inlet pipe 12 and outlet pipe 13 is controlled according to the required cooling speed, thereby controlling the flow rate of the cool water flowing through the inside of the copper pipe 4. When the cooling speed needs to be slow, the flow rate is made slower, and vice versa. When the cool water passes through the inside of the S-shaped copper pipe 4, it can absorb the heat inside the heating box 1 through the copper pipe 4 and the fins 41 at the bottom. The heat absorption efficiency is proportional to the flow rate of the cool water, so that the heat emitted by the aluminum alloy profile is cooled and annealed evenly at an appropriate speed.

Claims

1. An annealing device for producing door and window aluminum alloy profiles, comprising a heating box (1) and an electric furnace wire (22), the electric furnace wire (22) being installed inside the heating box (1), and a temperature sensor being further arranged inside the heating box (1), characterized in that: The heating box (1) is vertically installed with electric push rods (3) on both sides of the upper side, the extending end of the electric push rod (3) penetrates into the inside of the heating box (1), and the extending end of the electric push rod (3) is fixed with a lifting plate (31); The bottom of the lifting plate (31) is fixed with an S-shaped copper pipe (4) through a connecting rod (311), the upper surface of the heating box (1) is respectively connected with an inlet pipe (12) and an outlet pipe (13), the inlet pipe (12) and the outlet pipe (13) are respectively communicated to the inside of both ends of the copper pipe (4) through a high-temperature-resistant hose (42), and the inlet pipe (12) and the outlet pipe (13) are further installed with electric control valves (14).

2. The annealing device for the production of door and window aluminum alloy profiles according to Claim 1, characterized in that: The bottom surface of the copper pipe (4) is fixed with fins (41), and the fins (41) are S-shaped together with the copper pipe (4).

3. The annealing device for the production of door and window aluminum alloy profiles according to Claim 1, characterized in that: The front end of the heating box (1) is installed with a rotatable door body (15) through a hinge.

4. The annealing device for the production of aluminum alloy profiles for doors and windows according to claim 1, characterized in that: The upper surface of the heating box (1) below the electric push rod (3) is fixed with a heat insulation plate (11), and the electric push rod (3) is installed above the heat insulation plate (11).

5. The annealing device for the production of door and window aluminum alloy profiles according to claim 1, characterized in that: The inner wall surface of the heating box (1) is fixed with heat-resistant bricks (2), and the thickness of the heat-resistant bricks (2) is the same.

6. The annealing device for the production of door and window aluminum alloy profiles according to claim 5, characterized in that: The surface of the heat-resistant brick (2) is provided with a groove (21), and an electric furnace wire (22) is installed in the groove (21).

7. The annealing device for the production of door and window aluminum alloy profiles according to claim 1, characterized in that: The inlet pipe (12) below the electric control valve (14) is connected with a pressure relief valve (121) communicated with the inside thereof.

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