阅读说明：本技术 一种铝合金工件的时效处理装置 (Aging treatment device for aluminum alloy workpiece ) 是由 谢洪砖 张汉林 杨天虹 于 2021-09-27 设计创作，主要内容包括：本发明涉及一种铝合金工件的时效处理装置,包括有一个以上的加热炉、一个以上的淬火槽和一个以上的时效炉,所述装置还包括开设在地面上的首尾相连的环形轨道槽,所述环形轨道槽内分别间隔设置有若干沿环形轨道槽运动的第一台车和第二台车,第一台车用以运送装有铝合金工件的运输架,第二台车运送淬火槽,驱动单元驱动第一台车将运输架运送到加热炉内进行预加热到指定温度,再通过升降单元将装有铝合金工件的运输架放入第二台车上的淬火槽中冷却,再将运输架运送至时效炉内时效处理。本发明的加工效率高,在加热炉和时效炉内均可以对铝合金工件进行均匀加热,使最终产品的机械性能好。(The invention relates to an aging treatment device for aluminum alloy workpieces, which comprises more than one heating furnace, more than one quenching tank and more than one aging furnace, and further comprises annular rail grooves which are arranged on the ground in an end-to-end manner, wherein a plurality of first trolleys and second trolleys which move along the annular rail grooves are arranged in the annular rail grooves at intervals respectively, the first trolleys are used for conveying a transport frame provided with the aluminum alloy workpieces, the second trolleys are used for conveying the quenching tank, a driving unit drives the first trolleys to convey the transport frame into the heating furnace to be preheated to a specified temperature, the transport frame provided with the aluminum alloy workpieces is placed into the quenching tank on the second trolleys through a lifting unit to be cooled, and then the transport frame is conveyed into the aging furnace to be subjected to aging treatment. The invention has high processing efficiency, and can uniformly heat the aluminum alloy workpiece in both the heating furnace and the aging furnace, so that the final product has good mechanical property.)

1. The aging treatment device for the aluminum alloy workpiece comprises more than one heating furnace (1), more than one quenching tank (2) and more than one aging furnace (3), and is characterized by comprising annular track tanks (4) which are arranged on the ground in an end-to-end manner, wherein a plurality of first trolleys (5) and second trolleys (6) which move along the annular track tanks (4) are arranged in the annular track tanks (4) at intervals, the first trolleys (5) are provided with transport frames (7) for containing the aluminum alloy workpiece, and the quenching tank (2) is arranged on the second trolleys (6);

a platform (8) for loading and unloading aluminum alloy workpieces and replacing quenching liquid is further arranged in the annular track groove (4), a driving unit for driving the first trolley (5) and the second trolley (6) is arranged below the annular track groove (4), the heating furnace (1) and the aging furnace (3) are both arranged above the annular track groove (4), the heating furnace (1) and the aging furnace (3) are both located on the stroke of the driving unit, and the heating furnace (1) is located in front of the aging furnace (3) on the stroke of the transportation unit;

and a lifting unit and a furnace door opening and closing unit for enabling the conveying frame (7) to enter and exit the heating furnace (1) and the aging furnace (3) are arranged in the heating furnace (1) and the aging furnace (3).

2. The aging treatment device for the aluminum alloy workpiece according to claim 1, wherein the transportation frame (7) is of a multilayer structure, a first gear (9) is fixedly connected to the top layer of the transportation frame (7), a first inclined plane (10) for preventing water accumulation is arranged on the upper end face of the bottom layer of the transportation frame (7), other middle layers of the transportation frame (7) are arranged to be a material loading layer (11), a ventilation gap which is favorable for heating the aluminum alloy workpiece is arranged on the end face of the material loading layer (11), and the top layer, the material loading layer (11) and the bottom layer of the transportation frame (7) are fixedly connected through connecting ribs (12).

3. The aging treatment device for the aluminum alloy workpiece as recited in claim 1, wherein the lifting unit comprises a threaded screw rod (13), one threaded screw rod (13) is vertically and rotatably mounted in each of the side walls of the heating furnace (1) and the aging furnace (3), the smooth section of the top end of the threaded screw rod (13) penetrates through the top wall of the heating furnace (1) and the top wall of the aging furnace (3) and is fixedly connected with the output shaft of a first motor (14) respectively arranged on the top wall of the heating furnace (1) and the top wall of the aging furnace (3), a lifting plate (15) is in threaded transmission connection with the threaded screw rod (13), the lifting plate (15) is further slidably mounted on a guide rod (16), and the axis of the guide rod (16) is parallel to the threaded screw rod (13) and is arranged in the heating furnace (1) and the aging furnace (3); the lifting plate (15) is provided with a fixing component which enables the transportation frame (7) to lift along with the lifting plate (15).

4. An aging treatment apparatus for an aluminum alloy workpiece as set forth in claim 3 or claim 2, it is characterized in that the fixing component comprises a fixing rod (17), the top end surface of the fixing rod (17) is fixedly connected on the bottom end surface of the lifting plate (15), a fixed block (18) is fixedly connected to the bottom end face of the fixed rod (17), a transmission rod (19) is rotatably mounted in the fixed rod (17), a second gear (20) is fixedly connected to the top of the transmission rod (19), a third gear (21) is fixedly connected to the bottom of the transmission rod (19), the third gear (21) is positioned in the fixed block (18), two first racks (22) meshed with the third gear (21) are symmetrically arranged on two sides of the third gear (21), and the opposite ends of the two first racks (22) are respectively and fixedly connected with a telescopic block (23) which can extend out of the fixed block (18) in a sliding manner;

an electric telescopic rod (24) is arranged on the bottom end face of the lifting plate (15), a second rack (25) is fixedly connected to the telescopic end of the electric telescopic rod (24), an opening (26) is formed in the outer side wall of the fixing rod (17), and the second rack (25) can be meshed with the second gear (20) through the opening (26);

set up first spout (27) with fixed block (18) shape looks adaptation along vertical direction on the top end face of first gear (9), set up along the circumference of first spout (27) on the inner wall of first spout (27) with flexible piece (23) matched with fixed annular groove (28).

5. The aging treatment device for the aluminum alloy workpiece according to claim 1, wherein the bottom end surfaces of the heating furnace (1) and the aging furnace (3) are respectively provided with a feeding port and a discharging port, the furnace door opening and closing unit comprises a furnace door (29), the furnace door (29) is horizontally and slidably mounted at the feeding ports and the discharging ports of the heating furnace (1) and the aging furnace (3), and a side wall of the furnace door (29) is fixedly connected with a third rack (30);

and a fourth gear (31) is further fixedly connected to the bottom of the threaded screw rod (13), and the fourth gear (31) is meshed with the third rack (30).

6. The aging treatment device for the aluminum alloy workpiece as set forth in claim 1, wherein a fan (32) is arranged on the top end surface of the aging furnace (3), both air outlets of the fan (32) are arranged on the side wall of the aging furnace (3) and are opposite to the aluminum alloy workpiece on the transportation frame (7) when the aging furnace (3) processes the aluminum alloy workpiece, and an air inlet of the fan (32) is also arranged on the side wall of the aging furnace (3) and is positioned above the transportation frame (7) when the aging furnace (3) processes the aluminum alloy workpiece;

the aging furnace (3) is internally provided with a hot air channel (33), an air inlet of the hot air channel (33) is over against an air outlet of the fan (32), and the air outlet is over against the position between the bottom layer of the transportation frame (7) and the charging layer (11) at the lowest layer when the aging furnace (3) processes aluminum alloy workpieces.

7. The aging treatment device for the aluminum alloy workpiece as recited in claim 1, wherein a first rotating shaft (34) is vertically and rotatably mounted in the aging furnace (3) and the heating furnace (1), the top end of the first rotating shaft (34) is rotatably connected with the output shaft of a second motor (35) arranged on the top end surfaces of the heating furnace (1) and the aging furnace (3) after penetrating through the top walls of the heating furnace (1) and the aging furnace (3), a fifth gear (36) is fixedly connected to the first rotating shaft (34), and the fifth gear (36) can be meshed with the first gear (9) when the aluminum alloy workpiece is processed in the heating furnace (1) and the preheating furnace respectively.

8. The aging treatment device for the aluminum alloy workpiece as recited in claim 1, wherein the driving unit comprises a transmission chain (37), the transmission chain (37) is horizontally and rotatably disposed below the annular track groove (4), a first chain wheel (38) and a second chain wheel (39) are respectively disposed at two ends of the transmission chain (37), the first chain wheel (38) is fixedly connected to an output shaft of a third motor (40) disposed below the transmission chain (37), the second chain wheel (39) is fixedly connected to a second rotating shaft (41) rotatably mounted on the ground, and the first chain wheel (38) and the second chain wheel (39) are chain-driven and connected through the transmission chain (37);

set up installation spout (42) in annular track groove (4), first platform truck (5) and second platform truck (6) below all articulate the top that has flexible transfer line (43) (19), the bottom rigid coupling of flexible transfer line (43) (19) is in on drive chain (37), flexible transfer line slidable mounting is in installation spout (42).

Technical Field

The invention relates to the field of metal heat treatment equipment, in particular to an aging treatment device for aluminum alloy.

Background

The aging treatment refers to a heat treatment process in which a metal or alloy workpiece (such as low-carbon steel and the like) is subjected to solution treatment, quenched at high temperature or deformed by cold working to a certain extent, and then placed at higher temperature or room temperature to keep the shape and size of the workpiece, and the properties of the workpiece change along with time. Generally, the hardness and strength increase and the plastic toughness and internal stresses decrease over time. Steels with higher carbon content achieve very high hardness immediately after quenching, but their plasticity becomes very low. After the aluminum alloy is quenched, the strength or the hardness does not reach a peak value immediately, and the plasticity is not reduced but increased. After being left at room temperature for a relatively long time (for example, 4 to 6 days and nights), the strength and hardness of the quenched alloy are remarkably improved, and the plasticity is reduced. This phenomenon, in which the strength and hardness of the quenched alloy change significantly with time, is called aging. Aging at room temperature is called natural aging, and aging at a certain temperature is called artificial aging. The aging treatment is to store the material at room temperature or higher temperature for a longer time consciously so as to generate an aging process.

The traditional aging treatment of the aluminum alloy casting is to put an aluminum alloy workpiece preheated to a specified temperature into quenching liquid for quenching, transfer the aluminum alloy workpiece into an aging furnace for heating and aging treatment after quenching is finished, transfer the workpiece after quenching is finished in the process, and have low efficiency; when the aging treatment is performed, furnace temperatures at various positions in the aging furnace may be different, so that the workpiece is heated unevenly, and the mechanical properties of the final product are not good.

Disclosure of Invention

The invention aims to provide an aging treatment device for aluminum alloy.

The device comprises more than one heating furnace, more than one quenching tank and more than one aging furnace, the device comprises annular track grooves which are arranged on the ground in an end-to-end manner, a plurality of first trolleys and second trolleys which move along the annular track grooves are arranged in the annular track grooves at intervals, the first trolleys are provided with transport frames for containing aluminum alloy workpieces, and the quenching tanks are arranged on the second trolleys;

a platform for loading and unloading aluminum alloy workpieces and replacing quenching liquid is further arranged in the annular track groove, a driving unit for driving the first trolley and the second trolley is arranged below the annular track groove, the heating furnace and the aging furnace are both arranged above the annular track groove, the heating furnace and the aging furnace are both positioned on the stroke of the driving unit, and the heating furnace is positioned in front of the aging furnace on the stroke of the transportation unit;

and the heating furnace and the aging furnace are internally provided with a lifting unit and a furnace door opening and closing unit which enable the transportation frame to enter and exit the heating furnace and the aging furnace.

As preferred, the transportation frame is multilayer structure, the top layer rigid coupling of transportation frame has first gear, be provided with the first inclined plane that prevents ponding on the up end of the bottom of transportation frame, other intermediate levels of transportation frame set up to the loading layer, all set up the ventilation gap that is favorable to heating the aluminum alloy work piece on the terminal surface of loading layer, all through splice bar fixed connection between the top layer of transportation frame, loading layer and the bottom.

Preferably, the lifting unit comprises a threaded screw rod, one side wall of each of the heating furnace and the aging furnace is internally and vertically and rotatably provided with one threaded screw rod, the smooth section at the top end of each threaded screw rod penetrates through the top walls of the heating furnace and the aging furnace and is fixedly connected with the output shafts of first motors respectively arranged on the top walls of the heating furnace and the aging furnace, the threaded screw rods are in threaded transmission connection with lifting plates, the lifting plates are further slidably arranged on guide rods, and the axes of the guide rods are parallel to the threaded screw rods and are arranged in the heating furnace and the aging furnace; the lifting plate is provided with a fixing component which enables the transportation frame to lift along with the lifting plate.

Preferably, the fixing assembly comprises a fixing rod, the top end face of the fixing rod is fixedly connected to the bottom end face of the lifting plate, a fixing block is fixedly connected to the bottom end face of the fixing rod, a transmission rod is rotatably mounted in the fixing rod, the top of the transmission rod is fixedly connected to a second gear, a third gear is fixedly connected to the bottom of the transmission rod and is located in the fixing block, two first racks meshed with the third gear are symmetrically arranged on two sides of the third gear, and opposite ends of the two first racks are respectively and fixedly connected to a telescopic block capable of slidably extending out of the fixing block;

an electric telescopic rod is arranged on the bottom end face of the lifting plate, a second rack is fixedly connected to the telescopic end of the electric telescopic rod, an opening is formed in the outer side wall of the fixed rod, and the second rack can be meshed with a second gear through the opening;

a first sliding groove matched with the fixed block in shape is formed in the top end face of the first gear in the vertical direction, and a fixed ring groove matched with the telescopic block is formed in the inner wall of the first sliding groove in the circumferential direction of the first sliding groove.

Preferably, the bottom end surfaces of the heating furnace and the aging furnace are both provided with a material inlet and a material outlet, the furnace door opening and closing unit comprises a furnace door, the furnace door is horizontally and slidably mounted at the material inlet and the material outlet of the heating furnace and the aging furnace, and one side wall of the furnace door is fixedly connected with a third rack;

and a fourth gear is fixedly connected to the bottom of the threaded screw rod and is meshed with the third rack.

Preferably, a fan is arranged on the top end face of the aging furnace, two air outlets of the fan are arranged on the side wall of the aging furnace, the air outlets of the fan are opposite to the aluminum alloy workpiece on the conveying frame when the aging furnace processes the aluminum alloy workpiece, and an air inlet of the fan is also arranged on the side wall of the aging furnace and is positioned above the conveying frame when the aging furnace processes the aluminum alloy workpiece;

the aging furnace is internally provided with a hot air channel, an air inlet of the hot air channel is over against an air outlet of the fan, and an air outlet is over against the position between the bottom layer of the transportation frame and the charging layer of the lowest layer when the aging furnace processes the aluminum alloy workpiece.

Preferably, the aging furnace and the heating furnace are vertically and rotatably provided with first rotating shafts, the top ends of the first rotating shafts penetrate through the top walls of the heating furnace and the aging furnace and are fixedly connected with output shafts of second motors arranged on the end surfaces of the top surfaces of the heating furnace and the aging furnace, fifth gears are fixedly connected to the first rotating shafts, and the fifth gears can be meshed with the first gears when the transportation frame is used for processing aluminum alloy workpieces in the heating furnace and the preheating furnace respectively.

Preferably, the driving unit comprises a transmission chain, the transmission chain is horizontally and rotatably arranged below the annular track groove, a first chain wheel and a second chain wheel are respectively arranged at two ends of the transmission chain, the first chain wheel is fixedly connected to an output shaft of a third motor arranged below the transmission chain, the second chain wheel is fixedly connected to a second rotating shaft rotatably arranged on the ground, and the first chain wheel and the second chain wheel are in chain transmission connection through the transmission chain;

the annular track inslot is seted up the installation spout, first platform truck and second platform truck below all articulate the top that has flexible transfer line, the bottom rigid coupling of flexible transfer line is in drive chain is last, flexible dowel bar slidable mounting is in the installation spout.

Due to the adoption of the technical scheme, the invention has the following advantages:

1. according to the invention, the annular track groove is provided with the plurality of preheating furnaces and the aging furnaces, so that the heat treatment processing steps of a plurality of workpieces can be simultaneously carried out, and a large batch of workpieces are subjected to heat treatment, so that the preheating furnaces and the heating furnaces do not need to be in one-to-one correspondence in the heat treatment process, and can be directly transported to the idle aging furnace for aging treatment after heating and quenching are completed, thereby improving the heat treatment processing efficiency;

2. according to the invention, the second trolley is arranged to transport the quenching tank to move, the transport frame with the workpieces and subjected to heating is placed in the quenching tank to be synchronously cooled, meanwhile, the driving unit drives the quenching tank to move to the position below the aging furnace, the workpieces are transported in the cooling process, and the workpieces are not required to be transported to the aging furnace after the cooling is finished, so that the time is saved, and the processing efficiency is improved;

3. according to the invention, the feeding and discharging are carried out at positions outside the preheating furnace and the heating furnace, so that the potential safety hazard that workers are burnt or scalded when feeding and discharging near the heating furnace and the preheating furnace is reduced, and the safety of equipment is improved;

4. according to the invention, the first gear is arranged on the transport frame, and the first gear can be meshed with the fifth gear in the furnace to rotate when the first gear is subjected to heat treatment in the heating furnace and the preheating furnace respectively, so that the aluminum alloy workpiece on the transport frame is uniformly heated in the furnace, and a product with better mechanical property is obtained;

5. according to the invention, the fan is arranged on the aging furnace, and the air inlet and the air outlet of the fan are both arranged on the side wall of the aging furnace, so that air at each position in the aging furnace flows, the air in the aging furnace is uniformly heated, and the effect of uniformly heating each position of a workpiece can be realized by matching with the air flow channel in the aging furnace;

6. the lifting unit and the furnace door are simultaneously lifted and opened and closed by only arranging one threaded screw rod, so that the same structure can complete multiple functions, and the furnace door has a simple structure and low cost; meanwhile, the lifting of the lifting unit and the opening and closing processes of the furnace door are simultaneously carried out, the lifting of the lifting unit is not required to be carried out after the furnace door is opened, the time for opening the furnace door is shortened, and the heat loss in the heating furnace and the aging furnace is reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

The drawings of the present invention are described below.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a transport rack;

FIG. 3 is a schematic view showing the structure of an opening and closing unit for a door of a heating furnace;

FIG. 4 is a schematic structural view of a lifting unit in the heating furnace;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;

FIG. 6 is a schematic structural view of a fixing assembly;

FIG. 7 is a schematic view of a structure in a fixed block;

FIG. 8 is a schematic view of the carriage heating within the furnace;

FIG. 9 is a schematic structural view in an aging furnace;

FIG. 10 is a schematic view of the installation of the drive chain;

fig. 11 is a schematic view of the connection of the first trolley with the drive chain.

In the figure: 1. heating furnace; 2. a quenching tank; 3. aging furnace; 4. an annular track groove; 5. a first trolley; 6. a second carriage; 7. a transport rack; 8. a platform; 9. a first gear; 10. a first inclined plane; 11. a material loading layer; 12. connecting ribs; 13. a threaded lead screw; 14. a first motor; 15. a lifting plate; 16. a guide bar; 17. fixing the rod; 18. a fixed block; 19. a transmission rod; 20. a second gear; 21. a third gear; 22. a first rack; 23. a telescopic block; 24. an electric telescopic rod; 25. a second rack; 26. an opening; 27. a first chute; 28. a fixed ring groove; 29. a furnace door; 30. a third rack; 31. a fourth gear; 32. a fan; 33. a hot gas flow channel; 34. a first rotating shaft; 35. a second motor; 36. a fifth gear; 37. a drive chain; 38. a first sprocket; 39. a second sprocket; 40. a third motor; 41. a second rotating shaft; 42. installing a chute; 43. a telescopic transmission rod.

Detailed Description

The invention is further illustrated by the following figures and examples.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, an aging treatment device for aluminum alloy workpieces comprises more than one heating furnace 1, more than one quenching tank 2 and more than one aging furnace 3, the device comprises an annular track tank 4 which is arranged on the ground and is connected end to end, a plurality of first trolleys 5 and second trolleys 6 which move along the annular track tank 4 are arranged in the annular track tank 4 at intervals, a transport frame 7 for containing the aluminum alloy workpieces is arranged on the first trolleys 5, and the quenching tank 2 is arranged on the second trolleys 6;

a platform 8 for loading and unloading aluminum alloy workpieces and replacing quenching liquid is further arranged in the annular track groove 4, a driving unit for driving the first trolley 5 and the second trolley 6 is arranged below the annular track groove 4, the heating furnace 1 and the aging furnace 3 are both arranged above the annular track groove 4, the heating furnace 1 and the aging furnace 3 are both positioned on the stroke of the driving unit, and the heating furnace 1 is positioned in front of the aging furnace 3 on the stroke of the transportation unit;

and a lifting unit and a furnace door opening and closing unit for enabling the conveying frame 7 to enter and exit the heating furnace 1 and the aging furnace 3 are arranged in the heating furnace 1 and the aging furnace 3.

The driving unit drives the first trolley 5 to move to the platform 8 in the annular track groove 4, aluminum alloy workpieces to be processed are placed on the conveying frame 7 on the first trolley 5, the first trolley 5 is conveyed to the lower portion of the heating furnace 1 through the driving unit, the opening and closing of the furnace door 29 of the heating furnace 1 are controlled through the opening and closing unit of the furnace door 29 in the heating furnace 1, and the conveying frame 7 is conveyed into the heating furnace 1 through the lifting unit in the heating furnace 1 to be preheated. Electric heaters are arranged on the side walls of the heating furnace 1 and the aging furnace 3, and heating is realized through electric heating. After the temperature is preheated to a specified temperature, the driving unit drives the second trolley 6 to move to the lower part of the heating furnace 1, the opening and closing of the furnace door 29 of the heating furnace 1 are controlled by the opening and closing unit of the furnace door 29 of the heating furnace 1, and then the conveying frame 7 is conveyed into the quenching tank 2 on the second trolley 6 by the lifting unit in the heating furnace 1 for quenching. And the driving unit drives the second trolley 6 to move below the aging furnace 3 while quenching. The opening and closing of the furnace door 29 of the aging furnace 3 are controlled by the furnace door 29 opening and closing unit in the aging furnace 3, the conveying frame 7 is conveyed into the aging furnace 3 by the lifting unit in the aging furnace 3 for aging treatment, the first trolley 5 is conveyed to the lower part of the aging furnace 3 after the aging treatment is finished, the conveying frame 7 is placed back on the first trolley 5, and then the first trolley 5 moves to the platform 8 under the action of the driving unit to carry out feeding and discharging for next circulation operation.

According to the invention, the annular track groove 4 is provided with the plurality of preheating furnaces and the aging furnaces 3, so that the heat treatment processing steps of a plurality of workpieces can be simultaneously carried out, and a large number of workpieces are subjected to heat treatment, so that the preheating furnaces and the heating furnaces 1 do not need to be in one-to-one correspondence in the heat treatment process, and can be directly transported to the idle aging furnaces 3 for aging treatment after heating and quenching are completed, thereby improving the heat treatment processing efficiency;

according to the invention, the second trolley 6 is arranged to transport the quenching tank 2 to move, the transport frame 7 which is filled with the workpieces and is heated is placed in the quenching tank 2 to be cooled synchronously, meanwhile, the drive unit drives the quenching tank 2 to move to the position below the aging furnace 3, the workpieces are transported in the cooling process, and the workpieces are not required to be transported to the aging furnace 3 after cooling is finished, so that the time is saved, and the processing efficiency is improved;

according to the invention, the feeding and discharging are carried out at positions outside the preheating furnace and the heating furnace 1, so that the potential safety hazard that workers are burnt or scalded when feeding and discharging near the heating furnace 1 and the preheating furnace is reduced, and the safety of equipment is improved.

As shown in fig. 2, transportation frame 7 is multilayer structure, the top layer rigid coupling of transportation frame 7 has first gear 9, be provided with the first inclined plane 10 that prevents ponding on the up end of the bottom of transportation frame 7, other intermediate levels of transportation frame 7 set up to material loading layer 11, all set up the ventilation gap that is favorable to heating the aluminum alloy work piece on material loading layer 11's the terminal surface, all through splice bar 12 fixed connection between the top layer of transportation frame 7, material loading layer 11 and the bottom.

When the transportation frame 7 is preheated and aged in the heating furnace 1 and the aging furnace 3 respectively, the first gear 9 can be meshed with the fifth gears 36 in the heating furnace 1 and the aging furnace 3 for transmission, so that the aluminum alloy workpiece rotates and is heated along with the transportation frame 7, and the aluminum alloy is uniformly heated everywhere.

According to the invention, the first gear 9 is arranged on the transport frame 7, and the first gear 9 can be meshed with the fifth gear 36 in the furnace to rotate when the heating furnace 1 and the preheating furnace are subjected to heat treatment respectively, so that the aluminum alloy workpiece on the transport frame 7 is uniformly heated in the furnace, and a product with better mechanical property is obtained.

As shown in fig. 3, 4 and 8, the lifting unit comprises a threaded screw rod 13, a threaded screw rod 13 is vertically and rotatably mounted in each of the side walls of the heating furnace 1 and the aging furnace 3, the smooth section of the top end of the threaded screw rod 13 passes through the top wall of the heating furnace 1 and the aging furnace 3 and is fixedly connected with the output shaft of a first motor 14 respectively arranged on the top wall of the heating furnace 1 and the top wall of the aging furnace 3, a lifting plate 15 is in threaded transmission connection with the threaded screw rod 13, the lifting plate 15 is further slidably mounted on a guide rod 16, and the axis of the guide rod 16 is parallel to the threaded screw rod 13 and is arranged in the heating furnace 1 and the aging furnace 3; the lifting plate 15 is provided with a fixing component which enables the transportation frame 7 to lift along with the lifting plate 15.

The ageing furnace 3 and the heating furnace 1 are both provided with the same lifting unit, and the first motor 14 is a positive and negative motor in the embodiment. Taking the lifting of the transportation frame 7 in the heating furnace 1 as an example, the first motor 14 is started to rotate positively, the threaded screw rod 13 rotates to drive the lifting plate 15 to descend through the thread transmission, then the transportation frame 7 is fixed by the fixing component on the lifting plate 15, the first motor 14 rotates reversely, the threaded screw rod 13 drives the lifting plate 15 through the thread transmission to drive the transportation frame 7 to lift to the heating furnace 1 through the fixing component, and the first motor 14 stops rotating to heat. After heating is finished, the first motor 14 starts to rotate forwards, after the transportation frame 7 is sent out of the heating furnace 1, the first motor 14 rotates backwards again to enter the heating furnace 1, and the rotation is stopped after resetting is finished. The working principle of the lifting unit in the aging furnace 3 is the same.

As shown in fig. 5 to 7, the fixing assembly includes a fixing rod 17, a top end surface of the fixing rod 17 is fixedly connected to a bottom end surface of the lifting plate 15, a fixing block 18 is fixedly connected to the bottom end surface of the fixing rod 17, a transmission rod 19 is rotatably mounted in the fixing rod 17, a top of the transmission rod 19 is fixedly connected to a second gear 20, a bottom of the transmission rod 19 is fixedly connected to a third gear 21, the third gear 21 is located in the fixing block 18, two first racks 22 engaged with the third gear 21 are symmetrically disposed on two sides of the third gear 21, and opposite ends of the two first racks 22 are respectively fixedly connected to a telescopic block 23 capable of slidably extending out of the fixing block 18;

an electric telescopic rod 24 is arranged on the bottom end face of the lifting plate 15, a second rack 25 is fixedly connected to the telescopic end of the electric telescopic rod 24, an opening 26 is formed in the outer side wall of the fixed rod 17, and the second rack 25 can be meshed with the second gear 20 through the opening 26;

a first sliding groove 27 matched with the shape of the fixed block 18 is formed in the top end face of the first gear 9 along the vertical direction, and a fixed ring groove 28 matched with the telescopic block 23 is formed in the inner wall of the first sliding groove 27 along the circumferential direction of the first sliding groove 27.

When the transportation frame 7 is fixed, the lifting unit drives the fixing block 18 to the first sliding groove 27 on the first gear 9, the telescopic end of the electric telescopic rod 24 extends forwards, the second rack 25 drives the second gear 20 to rotate forwards, the transmission rod 19 drives the third gear 21 to rotate forwards, the gear and rack meshing transmission drives the telescopic block 23 to extend out of the fixing block 18 and is matched with the fixing ring groove 28 to fix the transportation frame 7, and the transportation frame 7 is lifted together with the lifting unit. When the transportation frame 7 is loosened, the telescopic end of the electric telescopic rod 24 is retracted, the second rack 25 drives the second gear 20 to rotate reversely, the third gear 21 is driven to rotate reversely through the transmission rod 19, the telescopic block 23 is driven to retract into the fixing block 18 through gear and rack meshing transmission, and the fixing component is separated from the transportation frame 7.

As shown in fig. 3, 4, 8 and 9, the bottom end surfaces of the heating furnace 1 and the aging furnace 3 are both provided with a material inlet and a material outlet, the furnace door opening and closing unit comprises a furnace door 29, the furnace door 29 is horizontally and slidably mounted at the material inlet and the material outlet of the heating furnace 1 and the aging furnace 3, and a third rack 30 is fixedly connected to one side wall of the furnace door 29;

a fourth gear 31 is further fixedly connected to the bottom of the threaded screw rod 13, and the fourth gear 31 is meshed with the third rack 30.

When the oven door 29 of the heating furnace 1 is controlled to be opened, the first motor 14 rotates forwards, the fourth gear 31 and the third rack 30 on the threaded screw rod 13 drive the oven door 29 to move forwards, so that the oven door 29 is opened, and the transportation frame 7 is fixed along with the downward movement of the lifting unit in the process. During the movement of the lifting unit with the transport carriage 7, the oven door 29 does not collide with other structures. The first motor 14 is then reversed, causing the door 29 to close, while the lifting unit brings the carriage 7 into the furnace 1. The opening and closing manner of the door 29 opening and closing unit of the aging oven 3 is the same as the principle of opening and closing the door 29 of the heating oven 1.

The lifting unit and the opening and closing of the furnace door 29 are simultaneously completed by only arranging one threaded screw rod 13, so that the same structure completes a plurality of functions, and the structure is simple and the cost is low; meanwhile, the lifting of the lifting unit and the opening and closing processes of the furnace door 29 are simultaneously carried out, the lifting of the lifting unit is not required to be carried out after the furnace door 29 is opened, the opening time of the furnace door 29 is shortened, and the heat loss in the heating furnace 1 and the aging furnace 3 is reduced.

As shown in fig. 9, a fan 32 is arranged on the top end surface of the aging furnace 3, two air outlets of the fan 32 are both arranged on the side wall of the aging furnace 3 and are opposite to the aluminum alloy workpiece on the transportation frame 7 when the aging furnace 3 processes the aluminum alloy workpiece, and an air inlet of the fan 32 is also arranged on the side wall of the aging furnace 3 and is located above the transportation frame 7 when the aging furnace 3 processes the aluminum alloy workpiece;

the aging furnace 3 is internally provided with a hot air channel 33, an air inlet of the hot air channel 33 is over against an air outlet of the fan 32, and the air outlet is over against the position between the bottom layer of the transport frame 7 and the charging layer 11 at the lowest layer when the aging furnace 3 processes aluminum alloy workpieces.

When the transportation frame 7 transports the aluminum alloy workpiece to carry out aging treatment in the aging furnace 3, the air inlet and the air outlet of the fan 32 are both positioned in the aging furnace 3, so that air in the aging furnace 3 can be circulated, air at each part can be heated uniformly, the pipeline connecting the air outlet and the air inlet of the fan 32 is made of a material with poor heat conductivity, and heat loss in the circulation process is small as far as possible. The hot air blown out of the air outlet is over against the workpiece on the material loading layer 11 of the conveying frame 7, so that the side wall of the workpiece can be uniformly heated, and the heating effect is good. Meanwhile, the hot air flow channel 33 guides the hot air blown through the side wall of the workpiece to the lower part of the workpiece to vertically blow upwards, so that the horizontal surface of the workpiece is uniformly heated, and the effect of aging treatment is enhanced.

According to the invention, the fan 32 is arranged on the aging furnace 3, and the air inlet and the air outlet of the fan 32 are both arranged on the side wall of the aging furnace 3, so that air at each position inside the aging furnace 3 flows, the air in the aging furnace 3 is uniformly heated, and the effect of uniformly heating each position of a workpiece can be realized by matching with the air flow channel in the aging furnace 3.

As shown in fig. 3, 4 and 8, a first rotating shaft 34 is vertically and rotatably mounted in the aging furnace 3 and the heating furnace 1, the top end of the first rotating shaft 34 is rotatably connected with the output shaft of a second motor 35 arranged on the top end surfaces of the heating furnace 1 and the aging furnace 3 after penetrating through the top walls of the heating furnace 1 and the aging furnace 3, a fifth gear 36 is fixedly connected to the first rotating shaft 34, and the fifth gear 36 can be meshed with the first gear 9 when the transport frame 7 processes aluminum alloy workpieces in the heating furnace 1 and the preheating furnace respectively.

When the transportation frame 7 for transporting the aluminum alloy workpiece is preheated in the heating furnace 1 and subjected to aging treatment in the aging furnace 3 respectively, the second motor 35 is started, and the transportation frame 7 is rotated through the meshing transmission of the first gear 9 and the fifth gear 36, so that the workpiece is uniformly heated everywhere, and a better heat treatment effect is achieved.

As shown in fig. 10 and 11, the driving unit includes a transmission chain 37, the transmission chain 37 is horizontally and rotatably disposed below the annular track groove 4, a first chain wheel 38 and a second chain wheel 39 are respectively disposed at two ends of the transmission chain 37, the first chain wheel 38 is fixedly connected to an output shaft of a third motor 40 disposed below the transmission chain 37, the second chain wheel 39 is fixedly connected to a second rotating shaft 41 rotatably disposed on the ground, and the first chain wheel 38 and the second chain wheel 39 are chain-driven by the transmission chain 37;

an installation sliding groove 42 is formed in the annular track groove 4, the top ends of telescopic transmission rods 4319 are hinged to the lower portions of the first trolley 5 and the second trolley 6, the bottom ends of the telescopic transmission rods 4319 are fixedly connected to the transmission chain 37, and the telescopic transmission rods are slidably installed in the installation sliding groove 42.

The third motor 40 is started to drive the transmission chain 37 to move through chain transmission, the transmission chain 37 drives the telescopic transmission rod 4319 to slide in the installation chute 42, and the telescopic transmission rod 4319 drives the first trolley 5 and the second trolley 6 to move in the annular track groove 4.

The working principle is as follows: the driving unit drives the first trolley 5 to move to the platform 8 in the annular track groove 4, an aluminum alloy workpiece to be processed is placed on the conveying frame 7 on the first trolley 5, and then the third motor 40 drives the transmission chain 37 to drive the first trolley 5 to move to the lower part of the heating furnace 1.

The first motor 14 above the heating furnace 1 starts to rotate positively, the threaded screw rod 13 drives the lifting plate 15 to descend through threaded transmission until the fixed block 18 extends into the first chute 27, then the first motor 14 stops rotating, and meanwhile, a fourth gear 31 on the threaded screw rod 13 and a third rack 30 on the furnace door 29 are in gear-rack meshing transmission to drive the furnace door 29 to be opened; then the telescopic end of the electric telescopic rod 24 extends forwards, the second rack 25 drives the second gear 20 to rotate forwards, the third gear 21 is driven to rotate forwards through the transmission rod 19, the telescopic block 23 is driven to extend out of the fixing block 18 through gear and rack meshing transmission, and the telescopic block is matched with the fixing ring groove 28 to fix the transportation frame 7. The first motor 14 is started to rotate reversely, so that the transportation frame 7 enters the heating furnace 1 along with the lifting plate 15, the furnace door 29 of the heating furnace 1 is closed, and then the first motor 14 stops rotating. Preheating is carried out, and at the moment, the second motor 35 is started to drive the fifth gear 36 to be in meshing transmission with the first gear 9, so that the workpiece is uniformly heated in the heating furnace 1. And simultaneously preheating, the third motor 40 drives the transmission chain 37 to rotate to drive the second trolley 6 to convey the quenching tank 2 to the lower part of the heating furnace 1. After preheating, the second motor 35 stops rotating, the first motor 14 starts to rotate positively, the furnace door 29 is opened, the lifting plate 15 drives the transportation frame 7 to move out of the heating furnace 1, and the telescopic end of the electric telescopic rod 24 is retracted to place the transportation frame 7 and the workpiece into the quenching tank 2 together for quenching. The first motor 14 then reverses to reposition the lifter plate 15 and the oven door 29 closes.

The second trolley 6 is driven by the transmission chain 37 to move to the lower part of the aging furnace 3 while the second trolley 6 is quenched.

The first motor 14 above the aging furnace 3 starts to rotate positively, the threaded screw rod 13 drives the lifting plate 15 to descend through threaded transmission until the fixed block 18 extends into the first chute 27, then the first motor 14 stops rotating, and meanwhile, a fourth gear 31 on the threaded screw rod 13 and a third rack 30 on the furnace door 29 are in gear-rack meshing transmission to drive the furnace door 29 to be opened; then the telescopic end of the electric telescopic rod 24 extends forwards, the second rack 25 drives the second gear 20 to rotate forwards, the third gear 21 is driven to rotate forwards through the transmission rod 19, the telescopic block 23 is driven to extend out of the fixing block 18 through gear and rack meshing transmission, and the telescopic block is matched with the fixing ring groove 28 to fix the transportation frame 7. The first motor 14 is started to rotate reversely, so that the transportation frame 7 enters the aging oven 3 together with the lifting plate 15, the oven door 29 of the aging oven 3 is closed, and then the first motor 14 stops rotating. And (3) heating and aging treatment is carried out, meanwhile, the fan 32 enables air in the aging furnace 3 to flow and is matched with an air flow channel in the aging furnace 3 to enable the workpiece to be uniformly heated, and at the moment, the second motor 35 is started to drive the fifth gear 36 to be in meshing transmission with the first gear 9, so that the workpiece is uniformly heated in the aging furnace 3. And during the aging treatment, the third motor 40 drives the transmission chain 37 to rotate to drive the first trolley 5 to move below the aging furnace 3. After the aging treatment is finished, the second motor 35 stops rotating, the first motor 14 starts to rotate positively, the furnace door 29 is opened, the lifting plate 15 drives the transportation frame 7 to move out of the aging furnace 3, and the telescopic end of the electric telescopic rod 24 is retracted to place the transportation frame 7 back on the first trolley 5. The first motor 14 then reverses to reposition the lifter plate 15 and the oven door 29 closes.

Then the first trolley moves to the platform to carry out feeding and discharging under the driving of the transmission chain, and next circulation operation is carried out.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.