Aluminum profile vacuum wood grain transfer furnace

Abstract

The utility model belongs to aluminium alloy surface treatment equipment technical field discloses a kind of aluminium alloy vacuum wood grain transfer printing furnace, including furnace body, furnace door, heating system, vacuum pumping system and trolley, heating chamber is inside furnace body, furnace door is connected with furnace body by hinged seat, furnace body and furnace door interface are provided with sealing annular groove, sealing annular groove is embedded with inflatable seal, inflatable seal is driven by inflation component;Inflation component includes air pump installed on furnace door, and inflatable seal is communicated with inflation pipeline, heat-insulating refractory layer is laid on furnace body inner wall, heat-insulating refractory layer is set using ceramic fiber felt and nano aerogel composite material.The utility model is through the synergistic effect of inflatable dynamic sealing ring and intelligent air pressure compensation mechanism, to solve the air leakage problem caused by traditional silica gel strip aging, and can improve the stability of vacuum degree, directly eliminate transfer printing grain fuzzy, white defect of leakage simultaneously, to improve product yield.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum profile surface treatment equipment, and in particular to a vacuum wood grain transfer furnace for aluminum profiles. Background Technology

[0002] Vacuum wood grain transfer is a technology widely used in the surface treatment of materials such as aluminum profiles, steel, and plastics. It can transfer the exquisite wood grain pattern on the transfer paper to the surface of the workpiece under vacuum by heating, so that it presents a realistic wood appearance effect, which is both beautiful and durable.

[0003] Existing aluminum profile vacuum wood grain transfer furnaces typically include a furnace body, a heating system, a vacuum system, and a trolley for placing workpieces. The workflow is as follows: place the aluminum profile workpiece with the transfer paper attached on the trolley, push it into the furnace, close the furnace door, and then use the vacuum system to evacuate the furnace to a negative pressure state. Then, start the heating system to sublimate the ink on the transfer paper and penetrate into the coating of the aluminum profile. Finally, cool to complete the transfer.

[0004] However, existing technologies suffer from poor sealing. Specifically, traditional furnace doors often use simple silicone strips for sealing, which are prone to aging and deformation under repeated opening and closing and high-temperature conditions. This makes it difficult to maintain or meet the required vacuum level, directly affecting the transfer effect and resulting in defects such as blurred textures and white spots. Therefore, we propose a vacuum wood grain transfer furnace for aluminum profiles. Utility Model Content

[0005] In view of the problem of poor sealing in the existing aluminum profile vacuum wood grain transfer furnace, this utility model is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A vacuum wood grain transfer furnace for aluminum profiles includes a furnace body, a furnace door, a heating system, a vacuum system, and a trolley. The furnace body has a heating chamber inside. The furnace door is connected to the furnace body through a hinge seat. A sealing annular groove is opened on the connecting surface of the furnace body and the furnace door. An inflatable sealing ring is embedded in the sealing annular groove. The inflatable sealing ring is driven by an inflatable component. The inflation component includes an air pump installed on the furnace door and an inflation pipe connected to the air pump and the inflation-type sealing ring.

[0007] As a technical solution of the aluminum profile vacuum wood grain transfer furnace of this utility model, the inner wall of the furnace is covered with a heat-insulating and fire-resistant layer, which is made of ceramic fiber felt and nano aerogel composite material.

[0008] As a technical solution of the aluminum profile vacuum wood grain transfer furnace described in this utility model, the furnace door is provided with an observation window and a pressure gauge.

[0009] As a technical solution of the aluminum profile vacuum wood grain transfer furnace described in this utility model, the furnace door has an integrally formed operating handle for applying force.

[0010] As a technical solution of the aluminum profile vacuum wood grain transfer furnace of this utility model, the furnace body is equipped with symmetrically arranged brackets, and the brackets are provided with elongated oval fixing holes for fixing. The furnace body is installed on the trolley through the brackets, the elongated oval fixing holes and fasteners.

[0011] As a technical solution of the aluminum profile vacuum wood grain transfer furnace of this utility model, the inflatable sealing ring is a hollow silicone tube, and the inflatable pipe includes an air inlet pipe connected to the air pump and an exhaust pipe located between and connected to the inflatable sealing ring and the air pump.

[0012] As a technical solution of the aluminum profile vacuum wood grain transfer furnace described in this utility model, the air pump is equipped with a pressure sensor, and the air pump can automatically replenish air when the air pressure of the inflatable sealing ring is in a state of decline.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model solves the air leakage problem caused by the aging of traditional silicone strips by the synergistic effect of an inflatable dynamic sealing ring and an intelligent air pressure compensation mechanism. It can also improve the stability of vacuum and directly eliminate defects such as blurred and white transfer patterns, thereby improving product yield.

[0014] 2. This utility model adopts a composite heat-insulating and fire-resistant layer to reduce heat loss and save energy costs. Combined with stress-resistant brackets and integrated operating handles, it extends the service life of the equipment and reduces the maintenance frequency, while significantly reducing the overall production cost. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 2 This is a side view of the structure of this utility model.

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0018] Explanation of reference numerals in the attached figures: In the diagram: 1. Furnace body; 101. Heating chamber; 102. Insulating and refractory layer; 2. Furnace door; 201. Observation window; 202. Operating handle; 203. Pressure gauge; 3. Sealing annular groove; 4. Hinge seat; 5. Bracket; 501. Oblong fixing hole; 6. Inflatable sealing ring; 7. Air pump; 801. Exhaust pipe; 802. Air inlet pipe. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1-3 A vacuum wood grain transfer furnace for aluminum profiles is provided. The furnace includes a furnace body 1, a furnace door 2, a heating system, a vacuum system, and a trolley. The furnace body 1 has a heating chamber 101 inside. The furnace door 2 is connected to the furnace body 1 through a hinge seat 4. A sealing annular groove 3 is provided on the connecting surface of the furnace body 1 and the furnace door 2. An inflatable sealing ring 6 is embedded in the sealing annular groove 3. The inflatable sealing ring 6 is driven by an inflatable component. The inflation component includes an air pump 7 installed on the furnace door 2 and an inflation pipe connected to the air pump 7 and the inflation-type sealing ring 6. In application, the inflation-type sealing ring 6 dynamically adjusts the sealing pressure through the air pump 7. Compared with the traditional fixed silicone strip, it can fit tightly against the contact surface between the furnace door 2 and the furnace body 1, significantly improving the sealing performance under high temperature environment, ensuring stable vacuum, and avoiding defects such as blurred lines or white spots caused by air leakage during the transfer process.

[0021] Reference Figure 1 and Figure 2 The inner wall of the furnace body 1 is covered with a heat-insulating and refractory layer 102. The heat-insulating and refractory layer 102 is made of ceramic fiber felt and nano aerogel composite material. The thickness of the heat-insulating and refractory layer 102 is 50-80mm. In application, the combination of ceramic fiber felt and nano aerogel composite material has both low thermal conductivity and high temperature stability, which greatly reduces heat loss, shortens the heating time, and avoids overheating and deformation of the furnace body 1, thus extending the service life of the equipment.

[0022] Reference Figure 1 and Figure 2The furnace door 2 is equipped with an observation window 201 (double-layer tempered glass observation window) and a pressure gauge 203 (range 0-0.1MPa). In application, the operator can monitor the transfer process in real time through the observation window 201 and adjust the vacuum and temperature parameters in a timely manner in combination with the data of the pressure gauge 203, thereby reducing the frequency of manual furnace opening and inspection and improving production safety and efficiency.

[0023] Reference Figure 1 and Figure 2 The furnace door 2 has an integrally formed operating handle 202 for applying force. The surface of the operating handle 202 can be covered with a heat-insulating rubber layer. In application, the integrated operating handle 202 structure can avoid the weaknesses of welding or bolt connection, enhance mechanical strength, prevent the risk of breakage caused by frequent opening and closing of the furnace door 2, and reduce maintenance costs.

[0024] Reference Figure 1 and Figure 2 The furnace body 1 is equipped with symmetrically arranged brackets 5, and the brackets 5 have elongated oval fixing holes 501 for fixing. The furnace body 1 is installed on the trolley through the brackets 5, the elongated oval fixing holes 501 and fasteners. It is connected to the trolley by bolts, allowing ±10mm position adjustment to adapt to the size of the trolley and to alleviate thermal expansion stress. In application, the design of the elongated oval fixing holes 501 provides a margin for installation position adjustment, is compatible with trolleys of different sizes, and at the same time alleviates thermal expansion and contraction stress, prevents the furnace body 1 from shifting due to thermal deformation, and ensures the long-term stability of the equipment.

[0025] Reference Figure 2 and Figure 3 The inflatable sealing ring 6 is a hollow silicone tube. The inflation pipe includes an air inlet pipe 802 connected to the air pump 7 and an exhaust pipe 801 located between and connected to the inflatable sealing ring 6 and the air pump 7. In application, the hollow silicone tube has good elasticity and high temperature resistance (>300℃). The dual-channel design of the air inlet pipe 802 for inflation and the exhaust pipe 801 for depressurization enables the inflatable sealing ring 6 to respond quickly and shorten the opening and closing cycle of the furnace door 2.

[0026] Reference Figures 1-3 The air pump 7 is equipped with a pressure sensor. When the air pressure of the inflatable sealing ring 6 drops, the air pump 7 can automatically replenish the air. In application, the pressure sensor automatically detects the air pressure of the inflatable sealing ring 6 and triggers the air pump 7 to replenish the air, avoiding human intervention and ensuring the reliability of sealing throughout the production process and reducing the defect rate.

[0027] The working principle of this utility model is as follows: workpiece loading: fix the aluminum profile with wood grain transfer paper attached on the trolley, push it into the heating chamber 101 of the furnace body 1, and close the furnace door 2; Sealing start: Start the air pump 7, and the inflatable sealing ring 6 expands until it completely fits the sealing annular groove 3; Vacuuming and heating: Turn on the vacuuming system to reduce the pressure inside the furnace to below -0.08MPa, which can be monitored by pressure gauge 203. Then start the heating system and raise the temperature to 180-200℃. Hold the temperature for 20-30 minutes to allow the ink to sublimate and penetrate into the aluminum profile coating. Cooling and depressurization: Turn off the heating system and allow it to cool naturally to below 60°C. Then, release the air pressure through the exhaust pipe 801 and the inflatable sealing ring 6. Open the furnace door 2 to remove the workpiece.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vacuum wood grain transfer furnace for aluminum profiles, comprising a furnace body (1), a furnace door (2), a heating system, a vacuum system, and a trolley, characterized in that: The furnace body (1) has a heating chamber (101) inside. The furnace door (2) is connected to the furnace body (1) through a hinge seat (4). A sealing annular groove (3) is provided on the connecting surface of the furnace body (1) and the furnace door (2). An inflatable sealing ring (6) is embedded in the sealing annular groove (3). The inflatable sealing ring (6) is driven by an inflatable component. The inflation component includes an air pump (7) installed on the furnace door (2) and an inflation pipe connected to the air pump (7) and the inflation-type sealing ring (6).

2. The aluminum profile vacuum wood grain transfer oven according to claim 1, characterized in that: The furnace door (2) is equipped with an observation window (201) and a pressure gauge (203).

3. The aluminum profile vacuum wood grain transfer oven according to claim 1, characterized in that: The furnace door (2) has an integrally formed operating handle (202) for applying force.

4. The aluminum profile vacuum wood grain transfer oven according to claim 1, characterized in that: The furnace body (1) is equipped with symmetrically arranged brackets (5), and the brackets (5) have elongated oval fixing holes (501) for fixing. The furnace body (1) is installed on the trolley through the brackets (5), the elongated oval fixing holes (501) and fasteners.

5. The aluminum profile vacuum wood grain transfer oven according to claim 1, characterized in that: The inflatable sealing ring (6) is a hollow silicone tube. The inflatable pipe includes an air inlet pipe (802) connected to the air pump (7) and an exhaust pipe (801) located between and connected to the inflatable sealing ring (6) and the air pump (7).

6. The aluminum profile vacuum wood grain transfer furnace according to any one of claims 1-5, characterized in that: The air pump (7) is equipped with a pressure sensor. When the air pressure of the inflatable sealing ring (6) is decreasing, the air pump (7) can automatically replenish the air.

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