Low-energy-consumption automobile workpiece heat treatment furnace

Abstract

The utility model relates to the technical field of automobile workpiece production, and particularly discloses a low-energy-consumption automobile workpiece heat treatment furnace which is characterized in that the exhaust end of a first heating pipeline is communicated with the gas inlet end of a gas inlet pipeline, and gas with waste heat exhausted by the first heating pipeline is introduced into the gas inlet pipeline and is mixed with hot gas of the gas inlet pipeline; the waste heat of the gas discharged by the first heating pipeline can be effectively utilized, and the energy consumption is reduced; and each second heating pipeline is provided with an electric control valve, and the air inlet amount of each second heating pipeline is controlled through the electric control valves, so that segmented temperature control is realized, and the temperature of each position of the heat preservation chamber of the aging furnace is ensured to be more balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile workpiece production, in particular to a low-energy consumption automobile workpiece heat treatment furnace. Background Art

[0002] Compared with cast iron, cast steel and other materials, aluminum alloy materials have the advantages of high strength, light weight and good processing performance. Therefore, aluminum alloy materials are widely used in industrial fields such as automobiles and construction. Among aluminum products, cast aluminum products are the most common, that is, aluminum is melted into aluminum liquid at high temperature, and then poured or injected into the molding cavity, and then solidified after cooling. Aluminum products obtained by casting have large internal stress and loose structure. They do not meet the requirements in terms of strength and density, so they need to undergo various heat treatments, such as solid solution and aging treatment.

[0003] Heat treatment furnaces are usually used to perform solid solution and aging treatments on automotive aluminum alloy workpieces. For example, a continuous solid solution and aging heat treatment production equipment disclosed in Chinese patent publication number CN209081958U includes a solid solution furnace, a quenching tank and an aging furnace arranged in sequence. The workpiece is transferred in the production equipment and sequentially subjected to solid solution heat treatment, quenching and aging treatments. The production equipment also includes an equalizing chamber, which is arranged at the end of the solid solution furnace and above the quenching tank. The equalizing chamber is provided with a temperature control device for making the internal temperature of the equalizing chamber the same as that of the solid solution furnace. The equalizing chamber is used for the workpiece to perform preparatory work before quenching.

[0004] Usually, for heat treatment of automobile workpieces, the temperature of the solution furnace needs to be set above 500°C, and the temperature of the aging furnace needs to be set at around 200°C. The heating of the solution furnace and the aging furnace generally adopts gas heat exchange to raise the temperature. Due to the different temperatures of the two furnace bodies, two pipelines are usually used to transport hot gases respectively. With gas heating, the gas heating efficiency of the solution furnace is about 50%, and the waste heat of the exhaust gas cannot be effectively utilized, resulting in high energy consumption in the production process.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a low-energy consumption automobile workpiece heat treatment furnace to solve the problem that the waste heat of the exhaust gas from the prior art solid solution furnace cannot be effectively utilized.

[0007] A low-energy consumption automobile workpiece heat treatment furnace comprises a solution furnace and an aging furnace, wherein the solution furnace is provided with a heat treatment chamber, wherein a first heating pipe for conveying hot air is provided in the heat treatment chamber, wherein the aging furnace is provided with a heat preservation chamber, wherein an air intake pipe for conveying hot air is provided on the outside of the aging furnace, wherein an exhaust end of the first heating pipe is connected to an air intake end of the air intake pipe, wherein the air intake pipe is further connected to a plurality of second heating pipes, wherein one end of the second heating pipes extends into the heat preservation chamber, wherein each of the second heating pipes is provided with an electric regulating valve, and wherein the second heating pipes are commonly connected to an air outlet pipe.

[0008] Specifically, the automobile workpiece heat treatment furnace also includes a circulating conveying device, which includes a first conveying device arranged on the feed end side of the solid solution furnace, a second conveying device arranged on the inner side of the solid solution furnace, a third conveying device arranged on the discharge end side of the solid solution furnace, a fourth conveying device arranged on the inner side of the insulation chamber, and a fifth conveying device arranged on the discharge end side of the aging furnace. The discharge end of the third conveying device is located on the feed end side of the aging furnace, and the discharge end of the fifth conveying device is located on the feed end side of the first conveying device.

[0009] Specifically, the first conveying device includes a first driving device arranged along the x-direction, a moving frame connected to the output end of the first driving device, and a plurality of first conveying rollers arranged on the moving frame along the x-direction. The moving frame is also provided with a sensing device.

[0010] Specifically, the second conveying device includes a plurality of second conveying rollers arranged along the x direction, the fourth conveying device includes a plurality of third conveying rollers arranged along the x direction; the third conveying device includes a first bracket, two first rotating conveying devices arranged on the first bracket, and a plurality of fourth conveying rollers arranged along the y direction between the two first rotating conveying devices; the fifth conveying device includes a second bracket, two second rotating conveying devices arranged on the second bracket, and a plurality of fifth conveying rollers arranged along the y direction between the two second rotating conveying devices.

[0011] Specifically, the first rotating conveying device includes a first motor fixed on the first bracket, a first circular frame drivingly connected to the output end of the first motor, and a plurality of sixth conveying rollers arranged in the first circular frame.

[0012] Specifically, the second rotating conveying device includes a second motor fixed on the second bracket, a second circular frame drivingly connected to the output end of the second motor, and a plurality of seventh conveying rollers arranged in the second circular frame.

[0013] Specifically, the solution furnace is provided with a first inlet and a first outlet, the aging furnace is provided with a second inlet and a second outlet, the first inlet, the second inlet, the first outlet and the second outlet are all provided with a lifting baffle assembly, and the lifting baffle assembly includes a lifting device and a baffle connected to the output end of the lifting device.

[0014] Beneficial effects of the utility model:

[0015] The automobile workpiece heat treatment furnace of the utility model connects the exhaust end of the first heating pipe with the intake end of the intake pipe, the gas with waste heat exhausted from the first heating pipe is passed into the intake pipe, mixed with the hot air in the intake pipe, and then passed into the second heating pipe, which can effectively utilize the waste heat of the gas exhausted from the first heating pipe and reduce energy consumption; and an electric regulating valve is provided on each second heating pipe, and the air intake volume of each second heating pipe is controlled by the electric regulating valve, thereby realizing segmented temperature control and ensuring that the temperature at each position of the insulation chamber of the aging furnace is more balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional heat treatment furnace for automobile workpieces Figure 1 ;

[0017] Figure 2 The utility model is a three-dimensional heat treatment furnace for automobile workpieces Figure 2 ;

[0018] Figure 3 It is a top view of the automobile workpiece heat treatment furnace of the utility model;

[0019] Figure 4 for Figure 3 Cross-section view of the AA surface in the middle.

[0020] The figures are marked as: solution furnace 10, aging furnace 20, first heating pipe 31, air inlet pipe 32, second heating pipe 33, electric regulating valve 40, air outlet pipe 34, first conveying device 51, second conveying device 52, third conveying device 53, fourth conveying device 54, fifth conveying device 55, first driving device 511, mobile frame 512, first conveying roller 513, induction device 514, second conveying roller 521, third conveying roller 541, second bracket 551, second rotating conveying device 552, fifth conveying roller 553, second motor 5521, second circular frame 5522, seventh conveying roller 5523, lifting baffle assembly 60, lifting device 61, baffle 62. DETAILED DESCRIPTION

[0021] The utility model provides a low-energy consumption automobile workpiece heat treatment furnace. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figures 1 to 4 The present embodiment discloses a low-energy consumption automobile workpiece heat treatment furnace, including a solution furnace 10 and an aging furnace 20. The solution furnace 10 is provided with a heat treatment chamber, in which a first heating pipe 31 for conveying hot air is provided. The aging furnace 20 is provided with a heat preservation chamber. An air intake pipe 32 for conveying hot air is provided on the outer side of the aging furnace 20. The exhaust end of the first heating pipe 31 is connected to the air intake end of the air intake pipe 32. The air intake pipe 32 is also connected to a plurality of second heating pipes 33. One end of the second heating pipe 33 extends into the heat preservation chamber. Each second heating pipe 33 is provided with an electric regulating valve 40. The second heating pipes 33 are commonly connected to an air outlet pipe 34.

[0024] In the automobile workpiece heat treatment furnace of this embodiment, hot air is introduced into the first heating pipe 31. The hot air transported in the first heating pipe 31 performs heat exchange when passing through the heat treatment chamber, and the temperature of the heat treatment chamber is increased to about 500°C. The automobile workpiece in the heat treatment chamber is subjected to solid solution treatment by utilizing the high temperature to fix the aluminum lattice in the automobile workpiece; the automobile workpiece is transferred to the insulation chamber of the aging furnace 20, and hot air is introduced into the air intake pipe 32. The hot air is transported through the second heating pipe 33, and heat exchange is completed in the insulation chamber, and the temperature of the insulation chamber is increased to about 200°C. The automobile workpiece is kept warm in the insulation chamber of the aging furnace for a period of time to reduce the internal stress, and then the material is discharged. After natural cooling, a product with good room temperature hardness, yield strength, tensile strength, impact toughness, fatigue strength and other properties is obtained.

[0025] In this embodiment, the exhaust end of the first heating pipe 31 is connected to the intake end of the intake pipe 32. The gas with residual heat exhausted from the first heating pipe 31 is passed into the intake pipe 32, mixed with the hot air from the intake pipe 32, and then passed into the second heating pipe 33. The residual heat of the gas exhausted from the first heating pipe 31 can be effectively utilized to reduce energy consumption. An electric regulating valve 40 is provided on each second heating pipe 33. The air intake volume of each second heating pipe 33 is controlled by the electric regulating valve 40, thereby realizing segmented temperature control and ensuring that the temperature at each position of the insulation chamber of the aging furnace 20 is more balanced.

[0026] like Figure 4 As shown, the automobile workpiece heat treatment furnace also includes a circulating conveying device, which includes a first conveying device 51 arranged at a feeding end side of the solid solution furnace 10, a second conveying device 52 arranged at the inner side of the solid solution furnace 10, a third conveying device 53 arranged at a discharging end side of the solid solution furnace 10, a fourth conveying device 54 arranged at the inner side of the heat preservation chamber, and a fifth conveying device 55 arranged at a discharging end side of the aging furnace 20. The discharging end of the third conveying device 53 is located at a feeding end side of the aging furnace 20, and the discharging end of the fifth conveying device 55 is located at a feeding end side of the first conveying device 51. The circulating conveying device can be used in conjunction with a manipulator and a carrier to place the automobile workpiece on the carrier first, and then use the manipulator and the carrier to transfer the automobile workpiece to the carrier. The manipulator places the carrier with the automobile workpiece on the first conveying device 51, and uses the first conveying device 51 to convey the carrier with the automobile workpiece along the x direction to the second conveying device 52, completes the solid solution in the solid solution furnace 10, and then conveys it to the third conveying device 53, and then conveys it to the fourth conveying device 54, completes the aging treatment in the aging furnace 20, and then conveys it to the fifth conveying device 55, and finally conveys it to the first conveying device 51, and uses the manipulator to transfer and unload the carrier with the automobile workpiece, and after the material is replaced, the carrier with new automobile workpiece is transferred back to the first conveying device 51, and the above operations are repeated to realize circular transportation and improve efficiency.

[0027] like Figure 1 As shown, the first conveying device 51 includes a first driving device 511 arranged along the x-direction, a moving frame 512 connected to the output end of the first driving device 511, and a plurality of first conveying rollers 513 arranged on the moving frame 512 along the x-direction. The moving frame 512 is also provided with a sensing device 514. The sensing device 514 adopts an infrared sensor to monitor whether a carrier is placed on the first conveying device 51. When the robot places the carrier carrying the automobile workpiece on the first conveying device 51, the sensing device 514 monitors the carrier and feeds back the signal to the control system. Then the control system controls the first driving device 511 to move to the feeding end side of the solid solution furnace 10, and then sends the carrier into the solid solution furnace 10, thereby realizing automatic sensing with a high degree of automation.

[0028] like Figure 1As shown, the second conveying device 52 includes a plurality of second conveying rollers 521 arranged along the x direction, and the fourth conveying device 54 includes a plurality of third conveying rollers 541 arranged along the x direction; the third conveying device 53 includes a first bracket, two first rotating conveying devices arranged on the first bracket, and a plurality of fourth conveying rollers arranged along the y direction between the two first rotating conveying devices; the fifth conveying device 55 includes a second bracket 551, two second rotating conveying devices 552 arranged on the second bracket 551, and a plurality of fifth conveying rollers 553 arranged along the y direction between the two second rotating conveying devices 552. By arranging a second rotating conveying device 552 that can be turned, the turning conveying of the carrier is realized.

[0029] Furthermore, the first rotating conveying device includes a first motor fixed on a first bracket, a first circular frame transmission-connected to the output end of the first motor, and a plurality of sixth conveying rollers arranged in the first circular frame. The first circular frame is rotated by the first motor to adjust the conveying direction of the sixth conveying roller, thereby realizing the steering conveying of the carrier. The end of the sixth conveying roller can be driven by a motor or a motor gear set.

[0030] The second rotating conveying device 552 includes a second motor 5521 fixed on the second bracket 551, a second circular frame 5522 drivingly connected to the output end of the second motor 5521, and a plurality of seventh conveying rollers 5523 arranged in the second circular frame 5522. The second circular frame 5522 is rotated by the second motor 5521, thereby adjusting the conveying direction of the seventh conveying roller 5523 to realize the steering conveying of the carrier. The end of the seventh conveying roller 5523 can be driven by a motor or a motor gear set.

[0031] like Figure 1 As shown, the solution furnace 10 is provided with a first inlet and a first outlet, the aging furnace 20 is provided with a second inlet and a second outlet, and the first inlet, the second inlet, the first outlet and the second outlet are all provided with a lifting baffle assembly 60, and the lifting baffle assembly 60 includes a lifting device 61 fixed to the outside of the solution furnace 10 and the aging furnace 20, and a baffle 62 connected to the output end of the lifting device 61. By setting the lifting baffle assembly 60, when feeding or discharging is required, the lifting device 61 can be used to control the baffle 62 to move upward, so that the first inlet, the second inlet, the first outlet and the second outlet are opened, and the carrier can pass smoothly. When feeding or discharging is not required, the lifting device 61 is used to control the baffle 62 to move downward, and the baffle 62 is used to block the first inlet, the second inlet, the first outlet and the second outlet to prevent heat loss.

[0032] The preferred implementation methods of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A low-energy consumption automobile workpiece heat treatment furnace, comprising a solution furnace (10) and an aging furnace (20), characterized in that: The solution furnace (10) is provided with a heat treatment chamber, in which a first heating pipe (31) for conveying hot air is provided, the aging furnace (20) is provided with a heat preservation chamber, an air intake pipe (32) for conveying hot air is provided on the outside of the aging furnace (20), the exhaust end of the first heating pipe (31) is connected to the air intake end of the air intake pipe (32), the air intake pipe (32) is further connected to a plurality of second heating pipes (33), one end of the second heating pipes (33) extends into the heat preservation chamber, each of the second heating pipes (33) is provided with an electric regulating valve (40), and the second heating pipes (33) are commonly connected to an air outlet pipe (34).

2. A low energy consumption automobile workpiece heat treatment furnace according to claim 1, characterized in that: The automobile workpiece heat treatment furnace further comprises a circulating conveying device, the circulating conveying device comprising a first conveying device (51) arranged at a feeding end side of the solid solution furnace (10), a second conveying device (52) arranged inside the solid solution furnace (10), a third conveying device (53) arranged at a discharging end side of the solid solution furnace (10), a fourth conveying device (54) arranged inside the heat preservation chamber, and a fifth conveying device (55) arranged at a discharging end side of the aging furnace (20), wherein the discharging end of the third conveying device (53) is located at a feeding end side of the aging furnace (20), and the discharging end of the fifth conveying device (55) is located at a feeding end side of the first conveying device (51).

3. A low energy consumption automobile workpiece heat treatment furnace according to claim 2, characterized in that: The first conveying device (51) comprises a first driving device (511) arranged along the x-direction, a moving frame (512) connected to the output end of the first driving device (511), and a plurality of first conveying rollers (513) arranged on the moving frame (512) along the x-direction; the moving frame (512) is also provided with a sensing device (514).

4. A low energy consumption automobile workpiece heat treatment furnace according to claim 2, characterized in that: The second conveying device (52) includes a plurality of second conveying rollers (521) arranged along the x direction, and the fourth conveying device (54) includes a plurality of third conveying rollers (541) arranged along the x direction; the third conveying device (53) includes a first bracket, two first rotating conveying devices arranged on the first bracket, and a plurality of fourth conveying rollers arranged along the y direction between the two first rotating conveying devices; the fifth conveying device (55) includes a second bracket (551), two second rotating conveying devices (552) arranged on the second bracket (551), and a plurality of fifth conveying rollers (553) arranged along the y direction between the two second rotating conveying devices (552).

5. A low energy consumption automobile workpiece heat treatment furnace according to claim 4, characterized in that: The first rotating conveying device includes a first motor fixed on the first bracket, a first circular frame drivingly connected to the output end of the first motor, and a plurality of sixth conveying rollers arranged in the first circular frame.

6. A low energy consumption automobile workpiece heat treatment furnace according to claim 4, characterized in that: The second rotating conveying device (552) comprises a second motor (5521) fixed on the second bracket (551), a second circular frame (5522) drivingly connected to the output end of the second motor (5521), and a plurality of seventh conveying rollers (5523) arranged in the second circular frame (5522).

7. A low energy consumption automobile workpiece heat treatment furnace according to claim 1, characterized in that: The solution furnace (10) is provided with a first inlet and a first outlet, the aging furnace (20) is provided with a second inlet and a second outlet, the first inlet, the second inlet, the first outlet and the second outlet are all provided with a lifting baffle assembly (60), and the lifting baffle assembly (60) comprises a lifting device (61) and a baffle (62) connected to the output end of the lifting device (61).

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