Aluminum profile powder spraying precuring furnace

Abstract

The utility model belongs to the technical field of aluminum profile auxiliary curing, and particularly relates to an aluminum profile powder spraying pre-curing oven which comprises a base plate, a curing oven, a lower air box, a burner, an upper air box, a main air pipe, a side air pipe and a guide rail, and a protection device is arranged at the top of the curing oven. According to the aluminum profile powder spraying pre-curing furnace, by arranging the pressure reduction unit, when the air pressure in an upper air box and a side air pipe is too large, gas pushes a piston to drive a connecting rod to extrude a spring, so that the piston moves upwards along a sliding groove formed in a connecting block, and when the piston is higher than an air outlet pipe, the gas is exhausted through the air outlet pipe, so that the air pressure in the upper air box is reduced; the problems that in the background technology, in the using process, no protection device is arranged, hot air is pumped into the upper air box and the four sets of side air pipes from the main air pipe through an exhaust fan, when the internal pressure of the four sets of side air pipes and the upper air box is too large, the upper air box and the side air pipes are cracked, and the air box is damaged are solved. Therefore, the device is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum profile auxiliary curing, in particular to an aluminum profile powder spraying pre-curing furnace. Background Art

[0002] The aluminum profile spraying process directly enters the powder curing stage after the powder spraying is completed.

[0003] When the aluminum profile enters the curing furnace, the temperature inside the curing furnace is high and the entrance is blown by high-speed hot air, which will blow away some powder. The blown powder will adhere to the wall of the curing furnace to form flocs. After a long period of accumulation, the flocs will cause a fire. The flocs on the furnace wall will be blown away and attached to the aluminum profile behind, causing damage to the surface of the aluminum and affecting the quality of the aluminum. With the current process, the work will be stopped for half a day every 3 or 4 days to manually clean the furnace wall, which increases production costs.

[0004] For example, a powder spraying precuring furnace for aluminum profiles disclosed in Chinese patent CN218691219U can use a burner to produce hot air into the lower wind box and the main air duct through the arrangement of various components on the top side of the substrate seat, and at the same time, the exhaust fan can evenly draw the hot air from the main air duct to the upper wind box and four groups of side air ducts, so that the furnace cavity can always be in a high temperature state, and the surface powder on the surface of the aluminum profile plate transmitted in the guide rail can be precured. The device adopts a thermal radiation curing method, which is different from the existing hot air curing, and can effectively avoid the powder being blown away. It solves the problem that the hot air curing of the existing device is easy to affect the quality of the profile and requires additional labor for subsequent cleaning, and is forced to stop production resulting in low work efficiency, and solves the problem that the accumulation of fluff on the furnace wall may cause a fire.

[0005] However, the device has no protective device during use. The exhaust fan draws hot air from the main air duct to the upper air box and four sets of side air ducts. When the internal pressure of the four sets of side air ducts and the upper air box is too high, the upper air box and the side air ducts will crack, causing damage to the device.

[0006] For this reason, we urgently need to provide an aluminum profile powder spraying precuring furnace. Utility Model Content

[0007] The purpose of the utility model is to provide an aluminum profile powder spraying pre-curing furnace to solve the problem proposed in the above background technology that there is no protective device during use, and the exhaust fan draws hot air from the main air duct to the upper air box and four groups of side air ducts. When the internal pressure of the four groups of side air ducts and the upper air box is too large, the upper air box and the side air ducts will be cracked, thereby causing damage to the device.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aluminum profile powder spraying pre-curing furnace, comprising a base plate, a curing furnace, a downwind box, a burner, an upwind box, a main air duct, a side air duct and a guide rail, wherein the curing furnace is fixedly installed on the top of the base plate, the downwind box is installed on the bottom of the curing furnace, the burner is installed on the right side of the base plate, the upwind box is installed on the top of the curing furnace, the exhaust fan is installed in the middle of the bottom of the upwind box, the main air duct is connected to the center of the top of the downwind box, the side air duct is connected around the top of the downwind box, the guide rail is fixedly installed at the front and rear ends of the top of the downwind box, and a protective device is provided on the top of the curing furnace.

[0009] The protective device comprises a pressure reduction unit and a temperature reduction unit. The pressure reduction unit is arranged on the top of the upper wind box, and the temperature reduction unit is arranged above the curing furnace.

[0010] The pressure reduction unit includes a connecting block, an inner block, a spring, a connecting rod, a piston and an air outlet pipe. The connecting block is at the top of the wind box, the inner block is fixedly installed at the top of the inner block, one end of the spring is fixedly installed at the top of the inner block, one end of the connecting rod is fixedly installed at the bottom of the spring, the piston is fixedly installed at the bottom of the connecting rod, and the air outlet pipe is connected to the front of the connecting block.

[0011] Preferably, the cooling unit includes a water tank, a water inlet pipe, a pipe sleeve and a water outlet pipe. The water tank is installed on the right side of the top of the curing furnace, the water inlet pipe is connected to the left side of the water tank, the pipe sleeve is sleeved on the outside of the air outlet pipe, and the water outlet pipe is connected to the upper end of the outer side of the pipe sleeve.

[0012] Preferably, the burner is connected to the downwind box, the input end of the exhaust fan is connected to the main air duct, and the input end of the exhaust fan is connected to the upper wind box, the top of the side air duct is connected to the upper wind box, and the hot air is generated by the burner and passed into the downwind box, and then the hot air is passed into the upper wind box and the side air duct through the main air duct by the exhaust fan, so that the high temperature inside the curing furnace is maintained.

[0013] Preferably, the upper wind box is connected to the connecting block, and a slide groove equal to the diameter of the piston is provided inside the upper wind box, so that when the air pressure inside the upper wind box is too high, the gas can push the piston to move upward along the slide groove.

[0014] Preferably, the air outlet pipe is connected to the connecting block. During the process of gas pushing the piston upward, when the piston is higher than the air outlet pipe, the gas can be discharged through the air outlet pipe, thereby achieving pressure relief of the upper air box and preventing the upper air box and the side air duct from rupturing due to excessive pressure.

[0015] Preferably, the water tank contains coolant, and a pump body is installed inside the water tank, and the output end of the pump body is connected to the water inlet pipe, one end of the water inlet pipe is connected to the pipe sleeve, and a cavity is opened inside the pipe sleeve. The coolant in the water tank is passed into the cavity of the pipe sleeve through the pump body, and heat exchange is performed with the hot air in the outlet pipe during the flow of the coolant, thereby reducing the temperature of the exhaust air and preventing burns.

[0016] Preferably, the guide rail is located between the side air duct and the main air duct, and a slide groove is provided inside the guide rail so that the aluminum profile can slide along the guide rail.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The aluminum profile powder spray precuring furnace is provided with a pressure reducing unit. When the air pressure inside the upper air box and the side air duct is too high, the gas pushes the piston to drive the connecting rod to squeeze the spring, so that the piston moves up along the slide groove provided in the connecting block. When the piston is higher than the air outlet pipe, the gas is discharged from the air outlet pipe to reduce the air pressure in the upper air box, thereby preventing the upper air box and the side air duct from rupture. This solves the problem proposed in the background technology that there is no protective device during use, and the hot air is sucked from the main air duct to the upper air box and the four groups of side air ducts by the exhaust fan. When the internal pressure of the four groups of side air ducts and the upper air box is too high, the upper air box and the side air duct will be cracked, thereby causing damage to the device.

[0019] 2. The aluminum profile powder spraying precuring furnace is provided with a cooling unit. When the hot air is discharged from the outlet pipe, the pump body in the water tank is started, and the coolant in the water tank is passed into the cavity of the pipe sleeve through the pump body. During the flow of the coolant, heat exchange is performed with the hot air in the outlet pipe, thereby reducing the temperature of the exhaust air and preventing burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the curing furnace of the utility model;

[0022] Figure 3 It is a cross-sectional view of the connection between the connection block and the upper wind box of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the connection between the cooling unit and the air outlet pipe of the utility model.

[0024] In the figure: 1, base plate; 2, curing furnace; 3, lower wind box; 4, burner; 5, upper wind box; 6, exhaust fan; 7, main air duct; 8, side air duct; 9, guide rail; 1001, connecting block; 1002, inner block; 1003, spring; 1004, connecting rod; 1005, piston; 1006, air outlet pipe; 1101, water tank; 1102, water inlet pipe; 1103, pipe sleeve; 1104, water outlet pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution: Example

[0027] A pre-curing furnace for powder coating of aluminum profiles, comprising a base plate 1, a curing furnace 2, a downwind box 3, a burner 4, an upwind box 5, a main air duct 7, a side air duct 8 and a guide rail 9, wherein the curing furnace 2 is fixedly mounted on the top of the base plate 1, the downwind box 3 is mounted on the bottom of the curing furnace 2, the burner 4 is mounted on the right side of the base plate 1, the burner 4 is connected to the downwind box 3, the input end of the exhaust fan 6 is connected to the main air duct 7, and the input end of the exhaust fan 6 is connected to the upwind box 5, the top of the side air duct 8 is connected to the upwind box 5, the hot air is produced by the burner 4 and passed into the downwind box 3, and then the hot air is passed into the upwind box 5 and the side air duct 8 through the main air duct 7 by the exhaust fan 6, so that the curing furnace 2 is kept at a high temperature state, the upper air box 5 is installed at the top inside the curing furnace 2, the upper air box 5 is connected to the connecting block 1001, and a slide groove equal to the diameter of the piston 1005 is opened inside the upper air box 5. When the air pressure inside the upper air box 5 is too large, the gas can push the piston 1005 to move up along the slide groove, the exhaust fan 6 is installed in the middle of the bottom of the upper air box 5, the main air duct 7 is connected to the top center of the lower air box 3, the side air duct 8 is connected to the top of the lower air box 3 around, the guide rail 9 is fixedly installed at the front and rear ends of the top of the lower air box 3, the guide rail 9 is located between the side air duct 8 and the main air duct 7, and a slide groove is opened inside the guide rail 9, so that the aluminum profile can slide along the guide rail 9, and a protective device is arranged on the top of the curing furnace 2.

[0028] The protective device comprises a pressure reducing unit and a temperature reducing unit. The pressure reducing unit is arranged on the top of the upper wind box 5 , and the temperature reducing unit is arranged above the curing furnace 2 .

[0029] The pressure reducing unit includes a connecting block 1001, an inner block 1002, a spring 1003, a connecting rod 1004, a piston 1005 and an air outlet pipe 1006. The connecting block 1001 is at the top of the upper air box 5, the inner block 1002 is fixedly installed at the top inside the connecting block 1001, one end of the spring 1003 is fixedly installed at the top inside the inner block 1002, one end of the connecting rod 1004 is fixedly installed at the bottom of the spring 1003, the piston 1005 is fixedly installed at the bottom of the connecting rod 1004, the air outlet pipe 1006 is connected to the front of the connecting block 1001, and the air outlet pipe 1006 is connected to the connecting block 1001. In the process of gas pushing the piston 1005 to move upward, when the piston 1005 is higher than the air outlet pipe 1006, the gas can be discharged through the air outlet pipe 1006, thereby realizing the pressure relief of the upper air box 5 and preventing the upper air box 5 and the side air duct 8 from rupture due to excessive pressure. Example

[0030] On the basis of the first embodiment: the cooling unit includes a water tank 1101, a water inlet pipe 1102, a pipe sleeve 1103 and a water outlet pipe 1104. The water tank 1101 is installed on the right side of the top of the curing furnace 2. The water tank 1101 contains coolant, and a pump body is installed inside the water tank 1101. The output end of the pump body is connected to the water inlet pipe 1102. One end of the water inlet pipe 1102 is connected to the pipe sleeve 1103. A cavity is opened inside the pipe sleeve 1103. Through the pump The coolant in the water tank 1101 is passed into the cavity of the pipe sleeve 1103. During the flow of the coolant, heat is exchanged with the hot air in the air outlet pipe 1006, thereby reducing the temperature of the exhaust air to prevent scalding. The water inlet pipe 1102 is connected to the left side of the water tank 1101, the pipe sleeve 1103 is sleeved on the outside of the air outlet pipe 1006, and the water outlet pipe 1104 is connected to the upper end of the outside of the pipe sleeve 1103, so that the coolant after heat exchange is discharged from the water outlet pipe 1104.

[0031] When in use, turn on the burner 4, and use the burner 4 to make hot air to pass into the lower air box 3, and then use the exhaust fan 6 to pass the hot air into the upper air box 5 and the side air duct 8 through the main air duct 7, so that the curing furnace 2 is kept at a high temperature. Then, the lower end of the aluminum profile is placed in the guide rail 9, and then the aluminum profile is pushed into the curing furnace 2. The powder on the surface of the aluminum profile is cured at high temperature by heat radiation. When the air pressure inside the upper air box 5 and the side air duct 8 is too high, the gas pushes the piston 1005 to drive the connecting rod 1004 to squeeze the spring 1003, so that the piston 1005 moves along the guide rail 9. As the slide groove formed in the connecting block 1001 moves upward, when the piston 1005 is higher than the air outlet pipe 1006, the gas is discharged from the air outlet pipe 1006 to reduce the air pressure in the upper wind box 5, thereby preventing the upper wind box 5 and the side air duct 8 from rupture. When the hot air is discharged from the air outlet pipe 1006, the pump body in the water tank 1101 is started, and the coolant in the water tank 1101 is passed into the cavity of the pipe sleeve 1103 through the pump body. During the flow of the coolant, heat exchange is performed with the hot air in the air outlet pipe 1006, thereby reducing the temperature of the exhaust air and preventing burns.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A powder spraying pre-curing furnace for aluminum profiles, comprising a base plate (1), a curing furnace (2), a downwind box (3), a burner (4), an upwind box (5), a main air duct (7), a side air duct (8) and a guide rail (9), wherein the curing furnace (2) is fixedly mounted on the top of the base plate (1), the downwind box (3) is mounted on the bottom of the curing furnace (2), the burner (4) is mounted on the right side of the base plate (1), the upwind box (5) is mounted on the top of the curing furnace (2), an exhaust fan (6) is mounted in the middle of the bottom of the upwind box (5), the main air duct (7) is connected to the top center of the downwind box (3), the side air duct (8) is connected to the four sides of the top of the downwind box (3), and the guide rail (9) is fixedly mounted on the front and rear ends of the top of the downwind box (3), characterized in that: A protective device is provided on the top of the curing furnace (2); The protective device comprises a pressure reduction unit and a temperature reduction unit, the pressure reduction unit is arranged on the top of the upper wind box (5), and the temperature reduction unit is arranged above the curing furnace (2); The pressure reducing unit comprises a connecting block (1001), an inner block (1002), a spring (1003), a connecting rod (1004), a piston (1005) and an air outlet pipe (1006); the connecting block (1001) is provided at the top of an air box (5); the inner block (1002) is fixedly mounted on the inner top of the connecting block (1001); one end of the spring (1003) is fixedly mounted on the inner top of the inner block (1002); one end of the connecting rod (1004) is fixedly mounted on the bottom of the spring (1003); the piston (1005) is fixedly mounted on the bottom of the connecting rod (1004); and the air outlet pipe (1006) is connected to the front of the connecting block (1001).

2. The aluminum profile powder spraying pre-curing furnace according to claim 1, characterized in that: The cooling unit comprises a water tank (1101), a water inlet pipe (1102), a pipe sleeve (1103) and a water outlet pipe (1104); the water tank (1101) is installed on the right side of the top of the curing furnace (2); the water inlet pipe (1102) is connected to the left side of the water tank (1101); the pipe sleeve (1103) is sleeved on the outside of the air outlet pipe (1006); and the water outlet pipe (1104) is connected to the upper end of the outside of the pipe sleeve (1103).

3. The aluminum profile powder spraying pre-curing furnace according to claim 1, characterized in that: The burner (4) is connected to the lower wind box (3), the input end of the exhaust fan (6) is connected to the main air duct (7), and the input end of the exhaust fan (6) is connected to the upper wind box (5), and the top of the side wind duct (8) is connected to the upper wind box (5).

4. The aluminum profile powder spraying pre-curing furnace according to claim 1, characterized in that: The upper wind box (5) is connected to the connecting block (1001), and a slide groove having a diameter equal to that of the piston (1005) is provided inside the upper wind box (5).

5. The aluminum profile powder spraying pre-curing furnace according to claim 1, characterized in that: The air outlet pipe (1006) is connected to the connection block (1001).

6. The aluminum profile powder spraying pre-curing furnace according to claim 2, characterized in that: The water tank (1101) contains cooling liquid, and a pump body is installed inside the water tank (1101). The output end of the pump body is connected to the water inlet pipe (1102), one end of the water inlet pipe (1102) is connected to the pipe sleeve (1103), and a cavity is opened inside the pipe sleeve (1103).

7. The aluminum profile powder spraying pre-curing furnace according to claim 1, characterized in that: The guide rail (9) is located between the side air duct (8) and the main air duct (7), and a slide groove is provided inside the guide rail (9).

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