Aluminum profile two-way hot air aging furnace

Abstract

The utility model discloses a kind of aluminium profile bidirectional hot air ageing furnace, including furnace box, the furnace box outer wall is fixedly installed with PLC controller, and the furnace box front side is slidably connected with protective seal door, the both sides of furnace box are fixedly installed with air duct and the inside of air duct is fixedly provided with electric heating pipe, the upper end of furnace box is symmetrically installed with two groups centrifugal fan, and circulating fan is fixedly arranged between centrifugal fan and located on the upper end of furnace box, the one end of circulating fan is fixedly provided with triangular pipe and another two ends of triangular pipe are respectively installed with first connecting pipe and second connecting pipe, the one end of first connecting pipe and second connecting pipe is respectively fixedly installed with multiple air inlet nozzle and air outlet nozzle, the inside of furnace box is provided with guide structure and the upper of guide structure is provided with rack, two the air duct position is opposite, and air duct and the one end of centrifugal fan are fixedly inserted with protective cover, bidirectional hot air flow can be realized to speed up heat transfer speed, and profile is heated sufficiently and evenly.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment equipment for aluminum profiles, and in particular to a bidirectional hot air aging furnace for aluminum profiles. Background Technology

[0002] After aluminum profiles are extruded, they need to be aged (artificial aging) to improve their mechanical properties. This is achieved by holding the aluminum profile at a specific temperature for a certain period of time, which causes a uniform strengthening phase to precipitate inside the aluminum alloy, thereby improving the strength, hardness, and wear resistance of the profile. The aging furnace is the key equipment for realizing this process, and its temperature uniformity, temperature control accuracy, and energy consumption directly affect the aging quality and production cost of the aluminum profile.

[0003] Traditional aluminum profile aging furnaces have some shortcomings. They mostly use hot air circulation methods with single-sided or top air supply, resulting in a temperature difference of 5-10℃ between different areas inside the furnace. This leads to significant differences in the mechanical properties of profiles from the same batch, and the temperature of different parts of the profiles is not uniformly heated, affecting the uniform heat transfer to the profiles. Therefore, a bidirectional hot air aging furnace for aluminum profiles is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a bidirectional hot air aging furnace for aluminum profiles to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solution is provided: a bidirectional hot air aging furnace for aluminum profiles, including a furnace box, a PLC controller fixedly installed on the outer wall of the furnace box, and a protective sealing door slidably connected to the front side of the furnace box. Air ducts are fixedly installed on both sides of the furnace box, and electric heating tubes are fixedly installed inside the air ducts. Two sets of centrifugal fans are symmetrically installed on the upper end of the furnace box, and a circulating fan is fixedly installed between the centrifugal fans at the upper end of the furnace box. A triangular tube is fixedly installed at one end of the circulating fan, and a first connecting pipe and a second connecting pipe are respectively installed at the other two ends of the triangular tube. Multiple air inlets and air outlets are fixedly installed at one end of the first connecting pipe and the second connecting pipe. A guide structure is provided inside the furnace box, and a placement rack is provided above the guide structure.

[0006] As a preferred embodiment of the above technical solution, the two air ducts are positioned relative to each other, and protective covers are fixedly inserted into one end of both the air duct and the centrifugal fan.

[0007] As a preferred embodiment of the above technical solution, the first connecting pipe and the second connecting pipe respectively penetrate through the inside of the furnace box, and the air inlet and air outlet are positioned relative to the profile.

[0008] As a preferred embodiment of the above technical solution, the guide structure includes a drive motor fixedly installed inside the furnace box, an adjusting screw fixedly connected to the output end of the drive motor, and one end of the adjusting screw rotatably mounted on a support base. A guide seat is threadedly connected to the outer wall of the adjusting screw, and the upper end of the guide seat is fixedly connected to the bottom of the placement frame.

[0009] As a preferred embodiment of the above technical solution, guide pulleys are rotatably installed at the four corners of the bottom of the placement rack, and the guide pulleys are rotatably mounted on two sets of limiting rails. The two sets of limiting rails are fixedly installed inside the furnace box. Two friction shafts are fixedly installed on both sides of the outer wall of the placement rack, and the outer wall of the friction shaft has a limiting plate for frictional rotation.

[0010] As a preferred embodiment of the above technical solution, positioning plates are symmetrically installed on the front and rear sides of the upper end of the placement rack, and a telescopic cylinder is fixedly installed in the middle of the positioning plate. One end of the telescopic cylinder is fixedly connected to an anti-slip clamp. Two positioning plates are symmetrically installed with two limiting telescopic rods on the telescopic cylinder, and one end of the limiting telescopic rod is connected to the outer wall of the rear side of the anti-slip clamp.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The device of this utility model is equipped with components such as an electric heating tube, a centrifugal fan, an air duct, a circulating fan, and a first connecting pipe. By turning on the electric heating tube, hot air at a 45-degree angle is ejected from the air outlets of the left and right air ducts, forming horizontal convection inside the furnace. At the same time, the centrifugal fan drives the hot air to stir, so that the temperature inside the furnace rises evenly and initially. Simultaneously, by driving the circulating fan, the internal hot air is drawn into the first connecting pipe through several air inlets, and then expelled from multiple air outlets along the second connecting pipe, thereby accelerating the hot air circulation speed inside the furnace box, achieving uniform and sufficient heating of all parts of the profile, which is conducive to improving the uniform heating of the temperature. The bidirectional hot air flow accelerates the heat transfer speed, greatly enhancing the heating of the profile.

[0012] 2. This utility model device is equipped with a guide structure. By driving the telescopic cylinders in the two positioning plates, the anti-slip clamps move relative to each other to clamp and position the aluminum profile. Then, the limiting plates on the outer wall of the friction shaft on both sides of the placement frame are rotated to 90 degrees, thereby limiting the aluminum profile on both sides to prevent slippage and other risks. By starting the drive motor, the guide seat on the outer wall of the adjusting screw is moved, causing the guide seat to drive the placement frame to move precisely along the limiting track using the four guide pulleys at the bottom. This is beneficial for the stable positioning of the profile and the automated transportation of it into the furnace box, reducing the burden on the staff and saving time and effort.

[0013] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an aluminum profile bidirectional hot air aging furnace according to the present invention; Figure 2 This is a schematic diagram of a partial adjustment structure for a bidirectional hot air aging furnace for aluminum profiles according to this utility model; Figure 3 for Figure 2 Schematic diagram of the partial split structure; Figure 4 for Figure 2 A partial enlarged diagram of the split structure; Figure 5 for Figure 4 A magnified diagram of the partially disassembled structure.

[0015] In the diagram: 1. Furnace box; 2. PLC controller; 3. Air duct; 31. Electric heating element; 32. Protective cover; 4. Protective sealing door; 5. Placement rack; 51. Friction shaft; 52. Limiting plate; 6. Guide structure; 61. Drive motor; 62. Adjusting screw; 63. Guide seat; 64. Limiting track; 65. Support seat; 66. Guide pulley; 67. Positioning plate; 671. Limiting telescopic rod; 68. Telescopic cylinder; 69. Anti-slip clamp; 7. Circulating fan; 71. Air inlet; 72. First connecting pipe; 73. Second connecting pipe; 74. Air outlet; 8. Centrifugal fan. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figures 1 to 5As shown in the figure, this embodiment provides a design for a bidirectional hot air aging furnace for aluminum profiles, including a furnace box 1. A PLC controller 2 is fixedly installed on the outer wall of the furnace box 1, and a protective sealing door 4 is slidably connected to the front side of the furnace box 1. Air ducts 3 are fixedly installed on both sides of the furnace box 1, and electric heating tubes 31 are fixedly installed inside the air ducts 3. Two sets of centrifugal fans 8 are symmetrically installed on the upper end of the furnace box 1, and a circulating fan 7 is fixedly installed between the centrifugal fans 8 at the upper end of the furnace box 1. A triangular tube is fixedly installed at one end of the circulating fan 7, and a first connecting pipe 72 and a second connecting pipe 73 are respectively installed at the other two ends of the triangular tube. Multiple air inlets 71 and air outlets 74 are fixedly installed at one end of the first connecting pipe 72 and the second connecting pipe 73, respectively. A guide structure 6 is provided inside the furnace box 1, and a placement rack 5 is provided above the guide structure 6.

[0018] like Figures 2 to 3 As shown, the two air ducts 3 are positioned opposite each other, and protective covers 32 are fixedly inserted into one end of both the air duct 3 and the centrifugal fan 8. The first connecting pipe 72 and the second connecting pipe 73 pass through the inside of the furnace box 1, and the air inlet 71 and the air outlet 74 are positioned opposite each other to the profile.

[0019] By setting the left and right air ducts 3 as circular cavity structures and symmetrically welding them to the inner walls of both sides of the furnace box 1, the air outlets of the air ducts 3 are evenly distributed on the side facing the furnace. The left air outlet is inclined at a 45-degree angle to the lower right, and the right air outlet is inclined at a 45-degree angle to the lower left, forming a horizontal convective airflow to ensure that the hot air evenly covers the entire width of the furnace. The electric heating tubes 31 are embedded in the left and right air ducts 3 respectively and are evenly arranged along the length of the air ducts 3. The electric heating tubes 31 are installed with flanges for easy replacement. The temperature control system realizes independent control of the zones to ensure the temperature uniformity along the length of the furnace body.

[0020] like Figures 4 to 5 As shown, the guide structure 6 includes a drive motor 61 fixedly installed inside the furnace box 1. An adjusting screw 62 is fixedly connected to the output end of the drive motor 61, and one end of the adjusting screw 62 is rotatably mounted on a support base 65. A guide seat 63 is threadedly connected to the outer wall of the adjusting screw 62, and the upper end of the guide seat 63 is fixedly connected to the bottom of the placement frame 5. Guide pulleys 66 are rotatably installed at the four corners of the bottom of the placement frame 5, and the guide pulleys 66 are rotatably mounted on two sets of limiting rails 64, which are fixedly mounted. Inside the furnace box 1, two friction shafts 51 are fixedly installed on both sides of the outer wall of the placement frame 5, and the friction shafts 51 have a limit plate 52 for frictional rotation. Positioning plates 67 are symmetrically installed on the front and rear sides of the upper end of the placement frame 5, and a telescopic cylinder 68 is fixedly installed in the middle of the positioning plate 67. One end of the telescopic cylinder 68 is fixedly connected to an anti-slip clamp 69. Two limiting telescopic rods 671 are symmetrically installed on the two positioning plates 67 and the telescopic cylinder 68. One end of the limiting telescopic rod 671 is connected to the outer wall of the rear side of the anti-slip clamp 69.

[0021] By setting two sets of limiting plates 52 on both sides of the placement rack 5, it can be relatively stable when placing the profile, and can be rotated and retracted when not in use without obstruction. By setting two limiting telescopic rods 671 in the two positioning plates 67, the anti-slip clamp 69 can be relatively stable when clamping and positioning the profile. The guide pulley 66 slides along the limiting track 64 to prevent the profile from shifting when moving.

[0022] The working principle and process of this utility model are as follows: According to the specifications of the aluminum profile to be processed, the preset process parameters are called through the touch screen of the PLC controller 2, the external power is turned on, and the electric heating tube 31 in the control air duct 3 starts to work. At the same time, the centrifugal fan 8 is started, and the air outlets of the left and right air ducts 3 spray out hot air at a 45-degree angle, forming horizontal convection in the furnace. At the same time, the centrifugal fan 8 drives the hot air to stir, so that the temperature in the furnace rises evenly and initially. At this time, the aluminum profile is placed on the placement rack 5. The telescopic cylinder 68 in the two positioning plates 67 drives the anti-slip clamping plates 69 to move relative to each other to clamp and position the aluminum profile. Then, the friction shafts on both sides of the placement rack 5 are rotated. The limiting plate 52 on the outer wall of 51 is set to 90 degrees to limit the aluminum profile on both sides to avoid risks such as slippage. After the aluminum profile is positioned, the drive motor 61 is started to drive the guide seat 63 on the outer wall of the adjusting screw 62 to move. The guide seat 63 drives the placement rack 5 to move precisely into the furnace box 1 along the limiting track 64 using the four bottom guide pulleys 66. The protective sealing door 4 is closed, and then the circulating fan 7 is driven to draw the internal hot air into the first connecting pipe 72 through several air inlets 71. Then, the hot air is expelled from multiple air outlets 74 along the second connecting pipe 73, thereby accelerating the hot air circulation speed inside the furnace box 1 and achieving uniform and sufficient heating of all parts of the profile.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A bidirectional hot air aging furnace for aluminum profiles, characterized in that, The furnace includes a furnace box (1), on which a PLC controller (2) is fixedly installed on the outer wall, and a protective sealing door (4) is slidably connected to the front side of the furnace box (1). Air ducts (3) are fixedly installed on both sides of the furnace box (1), and electric heating tubes (31) are fixedly installed inside the air ducts (3). Two sets of centrifugal fans (8) are symmetrically installed on the upper end of the furnace box (1), and a circulating fan (7) is fixedly installed between the centrifugal fans (8) on the upper end of the furnace box (1). A triangular tube is fixedly installed at one end of the circulating fan (7), and a first connecting pipe (72) and a second connecting pipe (73) are respectively installed at the other two ends of the triangular tube. Multiple air inlets (71) and air outlets (74) are fixedly installed at one end of the first connecting pipe (72) and the second connecting pipe (73). A guide structure (6) is provided inside the furnace box (1), and a placement rack (5) is provided above the guide structure (6).

2. The aluminum profile bidirectional hot air aging furnace according to claim 1, characterized in that, The two air ducts (3) are positioned opposite each other, and a protective cover (32) is fixedly inserted into one end of both the air duct (3) and the centrifugal fan (8).

3. The aluminum profile bidirectional hot air aging furnace according to claim 1, characterized in that, The first connecting pipe (72) and the second connecting pipe (73) pass through the interior of the furnace box (1), and the air inlet (71) and the air outlet (74) are positioned relative to the profile.

4. The aluminum profile bidirectional hot air aging furnace according to claim 1, characterized in that, The guide structure (6) includes a drive motor (61) fixedly installed inside the furnace box (1). The output end of the drive motor (61) is fixedly connected to an adjusting screw (62), and one end of the adjusting screw (62) is rotatably installed on the support seat (65). The outer wall of the adjusting screw (62) is threadedly connected to a guide seat (63), and the upper end of the guide seat (63) is fixedly connected to the bottom of the placement frame (5).

5. The aluminum profile bidirectional hot air aging furnace according to claim 4, characterized in that, The placement rack (5) is rotatably installed with guide pulleys (66) at the four corners of its bottom, and the guide pulleys (66) are mounted on two sets of limiting rails (64) in close contact with each other. The two sets of limiting rails (64) are fixedly installed inside the furnace box (1). Two friction shafts (51) are fixedly installed on both sides of the outer wall of the placement rack (5), and the friction shafts (51) are rubbed and rotated with limiting plates (52).

6. The aluminum profile bidirectional hot air aging furnace according to claim 5, characterized in that, The placement rack (5) is symmetrically equipped with positioning plates (67) on the front and rear sides of the upper end, and a telescopic cylinder (68) is fixedly installed in the middle of the positioning plate (67). One end of the telescopic cylinder (68) is fixedly connected to an anti-slip clamp (69). The two positioning plates (67) are symmetrically equipped with two limiting telescopic rods (671) on the telescopic cylinder (68), and one end of the limiting telescopic rod (671) is connected to the outer wall of the rear side of the anti-slip clamp (69).

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