Aluminum piston drying device and aluminum piston

Abstract

The application discloses an aluminum piston drying device and an aluminum piston, which comprise an outer box assembly, the outer box assembly comprises a bottom box body and a box cover, a heating rod is installed on the inner side wall of the bottom box body, an air inlet carrier block is fixedly connected to the bottom inner wall of the bottom box body, and the aluminum piston drying device further comprises an air inlet mechanism and a positioning mechanism which is rotationally connected to the top of the air inlet carrier block; the positioning mechanism comprises a plug block inserted into an oil return hole of the aluminum piston, the air inlet mechanism comprises an air inlet pipe, a communication pipe and an air outlet channel which is obliquely and penetratively connected to the plug block, external hot air is delivered into the inner cavity of the aluminum piston through the air inlet mechanism and cooperates with the heating rod to comprehensively dry the aluminum piston inside and outside, the hot air in the inner cavity of the aluminum piston passes through the air outlet channel to form a wind driving force, the wind driving force drives the aluminum piston and the positioning mechanism to rotate as a whole, and the external drying uniformity of the aluminum piston is better. The application has more uniform drying, better drying effect and can obtain a more dry aluminum piston.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aluminum piston processing, and particularly relates to an aluminum piston drying device and aluminum piston. BACKGROUND

[0002] The aluminum piston is a key part of an engine and works under alternating high temperature, high pressure and impact load for a long time. The working performance of the aluminum piston directly affects the performance and safety factor of the entire engine. Most of the pistons are produced by casting process at present. No matter gravity casting or pressure casting has inherent defects, such as shrinkage, shrinkage cavity, blowhole and the like. Even if extrusion casting is used, oxide inclusions and small blowholes cannot be avoided.

[0003] The use of forged and extruded pistons can refine the grain and make the grain in a streamline distribution. The internal defects of the material are eliminated, and the structure is more compact. The mechanical properties are improved, and the heat conduction and high pressure resistance are also significantly enhanced. In the process of piston processing, the piston needs to be dried after high-pressure deionized water cleaning of oil stains.

[0004] In the prior art, patent No. CN108036595A discloses a forged aluminum piston drying device, which comprises a box body provided with a box door on the front side and at least one drying unit; a lead screw vertically arranged on the middle of the left and right sides of the drying unit, and the bottom of the lead screw is suspended; a plurality of trays, each group having two, and each tray has a nut cooperating with the suspended end of the lead screw; a drying rack in the form of a shelf plate for carrying forged aluminum pistons, the bottom of the drying rack has a support part, and the drying rack can be pushed into the box from the bottom plate of the box; the drying rack has a supporting part, which is supported by a group of trays after the drying rack is pushed into the box; and a heating element arranged in the box.

[0005] The above-mentioned aluminum piston drying device uses a drying cabinet structure to realize batch drying of parts. However, the heat source position of the drying cabinet is fixed. When a batch of aluminum pistons is dried, the distances of the aluminum pistons from the heat source are different, resulting in poor uniformity of aluminum piston drying. In addition, it is difficult to dry the inner cavity of the aluminum piston, and the overall drying effect is not good. SUMMARY

[0006] In view of the problems in the prior art, the technical scheme is as follows:

[0007] An aluminum piston drying device, comprising an outer box assembly, the outer box assembly comprising a bottom box body and a box cover, a heating rod is installed on the inner side wall of the bottom box body, an air inlet carrier block is fixedly connected to the bottom inner wall of the bottom box body, and the aluminum piston drying device further comprises:

[0008] an air inlet mechanism;

[0009] The positioning mechanism is rotationally connected to the top of the air inlet carrier block;

[0010] The positioning mechanism includes a plug inserted into the oil return hole of the aluminum piston, the air inlet mechanism includes an air inlet pipe, a communication pipe, and an air outlet passage obliquely penetrating the plug, and external hot air is delivered to the inner cavity of the aluminum piston through the air inlet mechanism to cooperate with the heating rod for overall drying of the aluminum piston, the hot air in the inner cavity of the aluminum piston passes through the air outlet passage to form a wind driving force, the wind driving force drives the overall rotation of the aluminum piston and the positioning mechanism, and the external drying uniformity of the aluminum piston is further improved.

[0011] When the aluminum piston is dried, the positioning mechanism can be used to position and fix the aluminum piston to ensure its stability during drying; the heating rod mounted on the inner side wall of the bottom box body can be used to heat and dry the outer part of the aluminum piston; meanwhile, external hot air is delivered to the inner cavity of the aluminum piston through the air inlet mechanism, and the inner cavity of the aluminum piston can be dried by hot air, and the overall drying is better, and the hot air delivered to the inner cavity of the aluminum piston can be discharged to the inside of the bottom box body through the obliquely arranged air outlet passage, and the air outlet passage has a small inner diameter, so that the air blowing obliquely and having a certain air pressure is formed, which can drive the overall rotation of the positioning mechanism and the aluminum piston, and the outer surface of the continuously rotating aluminum piston can be more uniformly heated and dried by the heating rod, and the drying uniformity is better; and the hot air blown into the bottom box body through the air outlet passage is discharged from the air outlet pipe, and cooperates with the heating of the heating rod to form a hot air flow in the bottom box body, further improving the drying uniformity.

[0012] As a preferred embodiment of the above technical solution, the outer box assembly further comprises:

[0013] The fastener is fixedly installed on the outer side walls of the bottom box body and the box cover;

[0014] The handle is fixedly installed on the top of the box cover.

[0015] The fastener facilitates the assembly and disassembly of the bottom box body and the box cover, and the handle facilitates the manual taking and placing of the box cover.

[0016] As a preferred embodiment of the above technical solution, a rectangular mounting hole is formed in the outer side wall of the bottom box body, and an explosion-proof glass is mounted in the rectangular mounting hole.

[0017] The explosion-proof glass facilitates the observation of the drying condition of the aluminum piston in the bottom box body by the staff through the explosion-proof glass, so that timely adjustment can be made.

[0018] As a preferred embodiment of the above technical solution, the air inlet pipe is fixedly inserted into the outer side wall of the bottom box body, one end of the air inlet pipe communicates with the output of external hot air, and the other end of the air inlet pipe communicates with the shunt passage.

[0019] It should be noted that the delivery of external hot air is a conventional technical means in the prior art, and therefore is not described in detail in the present scheme. The external hot air is delivered to the air inlet pipe, then to the shunt passage through the air inlet pipe, and finally to the communication pipe through the shunt passage. The hot air is delivered from the bottom of the aluminum piston to the inner cavity of the aluminum piston through the communication pipe.

[0020] As a preferred embodiment of the above technical scheme, the air inlet mechanism further comprises an air outlet pipe, and the air outlet pipe is in communication with the top of the box cover.

[0021] By providing the air outlet pipe, the hot air inside the bottom box body can be easily discharged, and the moisture mixed in the hot air can be removed during the discharge process, thereby improving the drying effect.

[0022] As a preferred embodiment of the above technical scheme, the positioning mechanism comprises a carrier disc, a ventilation assembly, and a positioning assembly.

[0023] The carrier disc is used to place the aluminum piston, the ventilation assembly cooperates with the air inlet mechanism to deliver hot air into the inner cavity of the aluminum piston, and the positioning assembly is used to assist in positioning and fixing the aluminum piston.

[0024] As a preferred embodiment of the above technical scheme, the ventilation assembly comprises a central through hole formed in the middle of the carrier disc, the communication pipe connected to the shunt passage extends to the middle of the central through hole, a sealing bearing is mounted on the inner wall of the central through hole, and the inner ring of the sealing bearing is fixedly sleeved on the outer periphery of the communication pipe.

[0025] By providing the sealing bearing, the rotational stability and smoothness of the positioning mechanism as a whole are improved, and the sealing effect is achieved, so that the hot air delivered into the inner cavity of the aluminum piston is stably discharged from the air outlet passage to form wind power.

[0026] As a preferred embodiment of the above technical scheme, the positioning assembly comprises:

[0027] a positioning groove formed in the top of the carrier disc;

[0028] two connecting plates fixedly connected to the outer side of the carrier disc, a plug-in rod slidingly inserted into the connecting plate, and the two plug-in rods are fixedly connected to the plugs at one end close to each other, the two plugs are fixedly connected to the grommets at the outer periphery of the side away from each other, and the spring sleeved on the outer periphery of the plug-in rod is fixedly connected between the grommet and the connecting plate.

[0029] In the positioning assembly, the positioning groove is arranged to match the bottom protruding part of the aluminum piston, so that the aluminum piston is conveniently placed on the positioning of the carrier disc, and plays a role of preliminary positioning; before placing the aluminum piston, the two plug-in rods are pulled away from each other, then the aluminum piston is placed on the carrier disc, and then the plug-in rods are loosened; under the rebounding force of the spring, the plug is inserted into the oil return hole of the aluminum piston, not only plugs the oil return hole of the aluminum piston, ensures the relative sealing of the inner cavity of the aluminum piston, makes the hot air in the inner cavity of the aluminum piston discharged from the air outlet channel, and the plug inserted into the oil return hole of the aluminum piston also plays a role of auxiliary positioning of the aluminum piston, and ensures the structural stability of the aluminum piston in the drying and subsequent rotating processes.

[0030] An aluminum piston obtained by drying according to the aluminum piston drying device.

[0031] When the temperature and humidity are suitable, the passivation film on the surface of the aluminum piston that is not completely dried is easy to be damaged. The aluminum piston dried by the drying device is more dry as a whole, and the passivation film on the outer surface is less likely to be damaged in the subsequent transportation and storage process.

[0032] The beneficial effects of the present application are:

[0033] The heating rod mounted on the inner side wall of the bottom box body can heat and dry the outside of the aluminum piston; at the same time, the hot air outside is delivered to the inner cavity of the aluminum piston through the air inlet mechanism, and then the inner cavity of the aluminum piston can be dried by hot air, the overall drying is better, and the hot air delivered to the inner cavity of the aluminum piston can be discharged to the inside of the bottom box body through the inclined air outlet channel, while the air is discharged, and due to the inclined arrangement of the air outlet channel and the small inner diameter of the air outlet channel, an inclined air blowing with a certain air pressure is formed, which serves as a driving force to drive the positioning mechanism and the aluminum piston as a whole to rotate continuously, the outer surface of the aluminum piston rotating continuously can be more evenly heated and dried by the heating rod, and the uniformity of drying is better; and the hot air blown into the bottom box body through the air outlet channel is discharged from the air outlet pipe, and cooperates with the heating of the heating rod, so that a hot air flow is formed in the inside of the bottom box body, and the uniformity of drying is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A perspective structural schematic view of the present application is shown;

[0035] Figure 2 An internal structural schematic view of the bottom box body in the present application is shown;

[0036] Figure 3 A perspective structural schematic view of the positioning mechanism in the present application is shown;

[0037] Figure 4 A top view structural cut view of the air inlet carrier block in the present application is shown;

[0038] Figure 5 Fig. 4 shows a sectional view of the top structure of the block in the present application.

[0039] Reference signs

[0040] 10, outer box assembly; 11, bottom box body; 12, box cover; 121, handle; 13, fastener; 20, air inlet carrier block; 30, explosion-proof glass; 40, air inlet mechanism; 41, air inlet pipe; 42, air outlet pipe; 43, communication pipe; 44, shunt passage; 45, air outlet passage; 50, positioning mechanism; 51, carrier disc; 52, central through hole; 53, sealing bearing; 54, positioning groove; 55, connecting plate; 56, plug-in rod; 57, spring; 58, block; 59, abutment ring; 60, heating rod. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in conjunction with the embodiments.

[0042] As Figure 1 , Figure 4 , Figure 5 shown, Figure 1 Fig. 1 shows a schematic diagram of the three-dimensional structure of the present application; Figure 4 Fig. 2 shows a sectional view of the top structure of the air inlet carrier block 20 in the present application; Figure 5 Fig. 3 shows a sectional view of the top structure of the block 58 in the present application.

[0043] The aluminum piston drying device comprises an outer box assembly 10, the outer box assembly 10 comprising a bottom box body 11 and a box cover 12, a heating rod 60 being installed on the inner side wall of the bottom box body 11, and an air inlet carrier block 20 being fixedly connected to the bottom inner wall of the bottom box body 11. The aluminum piston drying device further comprises: an air inlet mechanism 40; a positioning mechanism 50, which is rotationally connected to the top of the air inlet carrier block 20; the positioning mechanism 50 comprising a block 58 inserted into the oil return hole of the aluminum piston, and the air inlet mechanism 40 comprising an air inlet pipe 41, a communication pipe 43 and an air outlet passage 45 obliquely penetrating through the block 58. External hot air is delivered to the inner cavity of the aluminum piston through the air inlet mechanism 40 in cooperation with the heating rod 60 for overall drying of the aluminum piston inside and outside. The hot air in the inner cavity of the aluminum piston forms a wind driving force through the air outlet passage 45, which drives the aluminum piston and the positioning mechanism 50 to rotate as a whole, thereby making the external drying of the aluminum piston more uniform.

[0044] When the aluminum piston is dried, the aluminum piston can be positioned and fixed through the positioning mechanism 50, so that the stability during the drying process is guaranteed; the outer part of the aluminum piston can be heated and dried through the heating rod 60 installed on the inner side wall of the bottom box body 11; meanwhile, the hot air outside is delivered to the inner cavity of the aluminum piston through the air inlet mechanism 40, so that the hot air drying of the inner cavity of the aluminum piston is realized, the overall drying is better, and the hot air delivered to the inner cavity of the aluminum piston can be discharged to the inside of the bottom box body 11 through the obliquely arranged air outlet channel 45; while the air is discharged, the air outlet channel 45 is obliquely arranged, and the inner diameter of the air outlet channel 45 is small, so that the air blowing is formed in an oblique direction and has a certain air pressure, and the air blowing can drive the positioning mechanism 50 and the aluminum piston as a whole to rotate continuously; the outer surface of the aluminum piston rotating continuously can be more evenly heated and dried by the heating rod 60, and the uniformity of the drying is better; and the hot air blown into the inside of the bottom box body 11 through the air outlet channel 45 is discharged from the air outlet pipe 42, and cooperates with the heating of the heating rod 60, so that the hot air flow is formed in the inside of the bottom box body 11, and the uniformity of the drying is further improved.

[0045] As shown in Figure 1 , Figure 1 The figure shows the schematic diagram of the three-dimensional structure of the present application.

[0046] The outer box assembly 10 further comprises: a fastener 13 fixedly installed on the outer side wall of the bottom box body 11 and the box cover 12; and a handle 121 fixedly installed on the top of the box cover 12. The fastener 13 is arranged to facilitate the splicing, installation and disassembly between the bottom box body 11 and the box cover 12; and the handle 121 is arranged to facilitate the manual taking and placing of the box cover 12.

[0047] A rectangular mounting hole is formed on the outer side wall of the bottom box body 11, and an explosion-proof glass 30 is installed on the rectangular mounting hole. The explosion-proof glass 30 is arranged to facilitate the staff to see the drying condition of the aluminum piston in the inside of the bottom box body 11 through the explosion-proof glass 30, so as to adjust in time.

[0048] As shown in Figure 4 , Figure 4 The figure shows the top view structure cutaway view of the air inlet carrier block 20 in the present application.

[0049] The air inlet pipe 41 is fixedly inserted on the outer side wall of the bottom box body 11, one end of the air inlet pipe 41 is communicated with the hot air output outside, and the other end of the air inlet pipe 41 is communicated with the shunt channel 44. It should be noted that the delivery of the hot air outside is a conventional technical means in the prior art, so the present scheme does not make too much description, the hot air outside is delivered to the air inlet pipe 41, and then delivered to the shunt channel 44 through the air inlet pipe 41, and then delivered to the inner cavity of the aluminum piston through the shunt channel 44.

[0050] As shown in Figure 3 ,Figure 3 Fig. 1 is a schematic diagram of the three-dimensional structure of the positioning mechanism 50 in the present application.

[0051] The air inlet mechanism 40 further comprises an air outlet pipe 42, which is connected to the top of the box cover 12. By arranging the air outlet pipe 42, the hot air inside the bottom box body 11 can be easily discharged, and the moisture mixed in the hot air can be taken away in the process of discharge, so that the drying effect is better.

[0052] The positioning mechanism 50 comprises a carrier disc 51, a ventilation assembly, and a positioning assembly. The carrier disc 51 is used to place the aluminum piston, the ventilation assembly cooperates with the air inlet mechanism 40 to transport hot air into the inner cavity of the aluminum piston, and the positioning assembly is used to assist in positioning and fixing the aluminum piston.

[0053] The ventilation assembly comprises a central through hole 52 arranged in the middle of the carrier disc 51, a communication pipe 43 extending to the middle of the central through hole 52 from the top of the shunt channel 44, and a sealing bearing 53 mounted on the inner wall of the central through hole 52, and the inner ring of the sealing bearing 53 is fixedly sleeved on the outer periphery of the communication pipe 43. By arranging the sealing bearing 53, the overall rotation stability and smoothness of the positioning mechanism 50 are improved, and the sealing effect is achieved, so that the hot air transported into the inner cavity of the aluminum piston is stably discharged from the air outlet channel 45 to form wind power.

[0054] The positioning assembly comprises a positioning groove 54 arranged in the top of the carrier disc 51, two connecting plates 55 fixedly connected to the outer side of the carrier disc 51, a plug-in rod 56 slidably inserted into the connecting plate 55, and two plug blocks 58 fixed to the ends of the two plug-in rods 56 close to each other, a stop ring 59 fixedly sleeved on the outer periphery of the two plug blocks 58 away from each other, and a spring 57 fixedly connected between the stop ring 59 and the connecting plate 55 and sleeved on the outer periphery of the plug-in rod 56. In the positioning assembly, the positioning groove 54 is matched with the protruding part at the bottom of the aluminum piston, so that the aluminum piston can be conveniently placed on the carrier disc 51 for preliminary positioning. Before placing the aluminum piston, the two plug-in rods 56 are pulled away from each other, then the aluminum piston is placed on the carrier disc 51, and then the plug-in rods 56 are released. Under the action of the rebound force of the spring 57, the plug blocks 58 are inserted into the oil return holes of the aluminum piston, which not only blocks the oil return holes of the aluminum piston to ensure the relative sealing of the inner cavity of the aluminum piston, but also discharges the hot air in the inner cavity of the aluminum piston from the air outlet channel 45. At the same time, the plug blocks 58 inserted into the oil return holes of the aluminum piston also play a role in assisting in positioning the aluminum piston, so as to ensure the structural stability of the aluminum piston during drying and subsequent rotation.

[0055] An aluminum piston obtained by drying the aluminum piston according to the aluminum piston drying device.

[0056] When the temperature and humidity are suitable, the passivation film on the surface of the aluminum piston which is not completely dried is easily damaged. The aluminum piston dried by the drying device of the present application is more completely dried, and the passivation film on the surface is less likely to be damaged during subsequent transportation and storage.

[0057] The above examples are only used to illustrate the technical solutions of the present application, and not to limit it.

Claims

1. An aluminum piston drying device, comprising an outer casing assembly (10), the outer casing assembly (10) comprising a bottom casing (11) and a casing cover (12), a heating rod (60) being installed on the inner side wall of the bottom casing (11), and an air inlet carrier block (20) being fixedly connected to the bottom inner wall of the bottom casing (11), characterized in that, The aluminum piston drying device also includes: Air intake mechanism (40); Positioning mechanism (50), and positioning mechanism (50) is rotatably connected to the top of air intake block (20); The positioning mechanism (50) includes a plug (58) inserted into the oil return hole of the aluminum piston. The air intake mechanism (40) includes an air intake pipe (41), a connecting pipe (43), and an air outlet channel (45) that obliquely penetrates the plug (58). External hot air is delivered to the inner cavity of the aluminum piston through the air intake mechanism (40) and used to dry the aluminum piston inside and out in conjunction with the heating rod (60). The hot air in the inner cavity of the aluminum piston passes through the air outlet channel (45) to form a wind driving force. The wind driving force drives the aluminum piston and the positioning mechanism (50) to rotate as a whole, thereby making the drying of the aluminum piston more uniform. The air intake pipe (41) is fixedly inserted into the outer wall of the bottom box (11). One end of the air intake pipe (41) is connected to the external hot air pipe, and the other end of the air intake pipe (41) is connected to the diversion channel (44). The positioning mechanism (50) includes a carrier plate (51), a ventilation assembly, and a positioning assembly; The ventilation assembly includes a central through hole (52) in the middle of the carrier plate (51), and a connecting pipe (43) connected to the diversion channel (44) with its top extending to the middle of the central through hole (52). A sealing bearing (53) is installed on the inner wall of the central through hole (52), and the inner ring of the sealing bearing (53) is fixedly sleeved on the outer periphery of the connecting pipe (43).

2. The aluminum piston drying device according to claim 1, characterized in that, The outer casing assembly (10) also includes: Fastener (13) is fixedly installed on the outer side wall of the bottom box (11) and the box cover (12); Handle (121) is fixedly installed on the top of the box cover (12).

3. The aluminum piston drying device according to claim 1, characterized in that, A rectangular mounting hole is provided on the outer side wall of the bottom box (11), and an explosion-proof glass (30) is installed in the rectangular mounting hole.

4. The aluminum piston drying device according to claim 1, characterized in that, The air intake mechanism (40) also includes an air outlet pipe (42), and the air outlet pipe (42) is interconnected with the top of the box cover (12).

5. The aluminum piston drying device according to claim 1, characterized in that, The positioning component includes: A positioning groove (54) is formed on the top of the carrier (51). Two connecting plates (55) are fixedly connected to the outside of the carrier plate (51). Connecting rods (56) are slidably inserted into the connecting plates (55). The ends of the two connecting rods (56) that are close to each other are fixed to the plug (58). A stop ring (59) is fixedly sleeved on the outer periphery of the two plugs (58) that are far apart from each other. A spring (57) sleeved on the outer periphery of the connecting rod (56) is fixedly connected between the stop ring (59) and the connecting plate (55).

6. An aluminum piston, characterized in that, The aluminum piston is dried using an aluminum piston drying apparatus according to any one of claims 1-5.

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