A surface treatment device for an aluminum alloy filter cavity die casting

Abstract

This utility model discloses a surface treatment device for die-cast aluminum alloy filter cavity, including a passivation tank, a clear water tank, a hot water tank, a lead screw moving module, a guide block, and a cleaning basket. A mounting frame is connected to the guide block via an electric push rod, and the cleaning basket is suspended from the mounting frame via a lifting rod. The lifting rod is rotatably connected to the mounting frame, and a rotary motor for driving the lifting rod is installed inside the mounting frame. A tapered splash guard is connected to the upper port of the passivation tank, and two sets of fans are symmetrically embedded on the front and rear outer walls of the splash guard. A tapered flow guide is installed on the inner wall of the splash guard. This utility model uses the airflow from the fans and the flow guide to focus downwards onto the cleaning basket, forcibly stripping away droplets. Simultaneously, the rotary motor drives the lifting rod and the cleaning basket to rotate, which not only uses centrifugal force to dissipate some of the passivation liquid but also adjusts the blowing angle of the airflow from the flow guide on the cleaning basket, effectively reducing the residue of passivation liquid on the cleaning basket and the die-cast part.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy die casting technology, and in particular to a surface treatment device for aluminum alloy filter cavity die casting. Background Technology

[0002] Aluminum alloys have advantages such as low density, high mechanical strength, good shock absorption, excellent casting performance, easy electroplating and spraying, good thermal conductivity, corrosion resistance and oxidation resistance. They have always been the first choice for die-cast materials of communication filter cavities. Before use, aluminum alloy filter cavity die-cast parts need to be surface treated to improve their surface strength.

[0003] In the prior art, patent CN113013570B discloses a surface treatment process for die-cast aluminum alloy filter cavity parts. This process is based on a passivation device, which includes a passivation tank, a clean water tank, a hot water tank, and a cleaning basket. The device drives a lead screw to rotate via a first motor, causing a guide block to drive a second motor and the cleaning basket to move horizontally synchronously, thus changing the horizontal position of the cleaning basket. The second motor drives a winding wheel to rotate, thereby controlling the winding and unwinding of the winding rope and changing the height of the cleaning basket. This allows the cleaning basket to be quickly placed into or removed from the passivation tank, the clean water tank, and the hot water tank, facilitating the surface treatment of the aluminum alloy die-cast parts.

[0004] However, in actual use, after the cleaning basket containing the die-cast parts is taken out of the passivation tank, a lot of passivation liquid droplets are easily left on the surface. If it is moved directly into the clean water tank, the passivation liquid droplets will fall into the clean water tank, contaminating the cleaning water and increasing the frequency of water changes. If the passivation liquid droplets are left to fall back into the passivation tank naturally, it will take a long time, which will affect the efficiency of surface processing.

[0005] To address this issue, we propose a surface treatment device for die-cast aluminum alloy filter housings. Utility Model Content

[0006] The purpose of this invention is to provide a surface treatment device for die-cast aluminum alloy filter cavity parts to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A surface treatment device for die-cast aluminum alloy filter cavity includes a passivation tank, a clear water tank, a hot water tank, a lead screw moving module, a guide block, and a cleaning basket. An installation frame is connected to the guide block via an electric push rod, and the cleaning basket is suspended from the installation frame via a lifting rod. The lifting rod is rotatably connected to the installation frame, and a rotary motor for driving the lifting rod is installed inside the installation frame. A tapered splash guard is connected to the upper port of the passivation tank, and two sets of fans are symmetrically embedded on the front and rear outer walls of the splash guard. A tapered flow guide is installed on the inner wall of the splash guard.

[0009] In a further embodiment, the air outlet of the air deflector is tilted downward toward the axis of the washing basket.

[0010] In a further embodiment, the cleaning basket consists of a perforated plate, several support rods fixed to the upper edge of the perforated plate, and a hanging ring fixed to the top of the support rods.

[0011] In a further embodiment, the lower end of the lifting rod is provided with a stop, and several support rods are hinged around the stop. The rotation angle between the support rods and the stop is 0-90°, and the lifting ring is suspended on the support rods.

[0012] In a further embodiment, the support rod is provided with a V-shaped groove one, and the lower end face of the lifting ring is provided with a V-shaped groove two corresponding to each support rod.

[0013] In a further embodiment, an arch is fixed on the mounting bracket, and the arch is fixed to the output end of the electric push rod.

[0014] In a further embodiment, the output end of the rotary motor is connected to a worm gear, and a worm wheel is meshed around the worm gear, the worm wheel being coaxially fixed with the boom.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a blower to generate airflow that is focused downwards by a guide hood, acting on the cleaning basket to forcibly remove droplets. A splash guard prevents splashing, while a rotating motor drives the boom and cleaning basket to rotate. This not only uses centrifugal force to throw off some of the passivation liquid but also adjusts the angle at which the airflow from the guide hood blows onto the cleaning basket, effectively reducing the amount of passivation liquid residue on the cleaning basket and die-cast parts, thereby reducing contamination of subsequent cleaning water. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the layout structure of the cleaning basket and the passivation tank after partial sectioning of the present invention;

[0019] Figure 3This is a schematic diagram of the mounting frame, lifting rod, and lifting ring of this utility model.

[0020] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Passivation tank; 2. Clear water tank; 3. Hot water tank; 4. Lead screw moving module; 5. Guide block; 6. Cleaning basket; 61. Hollowed-out disc; 62. Support rod; 63. Lifting ring; 631. V-groove II; 7. Electric push rod; 8. Mounting bracket; 81. Arch; 9. Hanging rod; 91. Support rod; 911. V-groove I; 92. Edge retainer; 10. Fan; 11. Splash guard; 12. Flow guide; 13. Rotary motor; 14. Worm gear; 15. Worm wheel. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4A surface treatment device for die-cast aluminum alloy filter cavity includes a passivation tank 1, a clear water tank 2, and a hot water tank 3 arranged sequentially along the production line direction. A lead screw moving module 4 spans above the three tanks. The lead screw moving module 4 mainly includes a lead screw, a motor, and a straight rail. A guide block 5 is threadedly connected to the lead screw and slidably connected to the straight rail. When the motor drives the lead screw to rotate, the guide block 5 moves horizontally along the production line direction. By setting infrared sensors on the three tanks and the guide block 5, and connecting the infrared sensors and the motor to an external PLC controller, the guide block 5 can be controlled to stop when it moves to the position directly above each tank.

[0026] The guide block 5 is connected to the mounting frame 8 via an electric push rod 7. Specifically, the output end of the electric push rod 7 is fixed to the arch 81 on the mounting frame 8, thus leaving an installation space between the mounting frame 8 and the arch 81. A hanger 9 is rotatably mounted in the mounting frame 8. A rotary motor 13 is provided between the hanger 9 and the mounting frame 8. The rotary motor 13 is fixed inside the mounting frame 8, and its output end is connected to a worm gear 14. The worm gear 14 drives the worm wheel 15 to rotate. The worm wheel 15 is coaxially fixed with the hanger 9 to ensure low-speed, high-torque rotation. The hanger 9 extends below the bottom surface of the mounting frame 8. Three support rods 91 are hinged to the lower end flange 92 of the hanger 9. The support rods 91 can be horizontally extended. The basket 6 is suspended at a 90° angle. Specifically, the basket 6 consists of a perforated plate 61, three circumferentially distributed support rods 62, and a top hanging ring 63. The die-cast part is placed on the perforated plate 61. The hanging ring 63 is used to suspend the support rod 91. The inner diameter of the hanging ring 63 is larger than that of the support rod 9. When suspending, the support rod 91 is first pulled upward, then the hanging ring 63 is put on, and then the support rod 91 is unfolded. The bottom of the hanging ring 63 has a V-shaped groove 631, which fits into the V-shaped groove 911 on the support rod 91 of the support rod 9. This not only prevents dislocation during rotation and improves its stability, but also reduces the shaking of the basket 6 during movement and facilitates the disassembly and assembly of the basket 6.

[0027] A tapered splash shield 11 is fixed at the top of the passivation tank 1, and a tapered flow guide 12 is nested in its inner wall. The air outlet of the flow guide 12 is a narrow rectangular structure. The air outlet of the flow guide 12 is inclined downwards towards the axis of the cleaning basket 6, so that the airflow is focused on the cleaning basket 6. Two sets of fans 10 are symmetrically embedded in the front and rear outer walls of the splash shield 11. After the airflow is accelerated by the flow guide 12, it forms a high-speed inclined airflow jet, which forcibly peels off the liquid droplets on the surface of the die-casting part. The splash shield 11 at the same time blocks liquid splashing.

[0028] Workflow: The lead screw moving module 4 moves the cleaning basket 6 above the passivation tank 1. The electric push rod 7 drives the cleaning basket 6 to immerse in the passivation liquid. After the passivation treatment is completed, the cleaning basket 6 is gradually raised. At the same time, the blower 10 is started, and the inclined airflow impacts the surface of the die-casting part to peel off large droplets. When the cleaning basket 6 is completely removed from the passivation liquid, the rotary motor 13 is started to drive the cleaning basket 6 to rotate. The centrifugal force throws off the residual droplets, reducing the contamination of the subsequent water tank by the passivation liquid. Then, the cleaning basket 6 is moved to the clean water tank 2 and the hot water tank 3 to complete the cleaning.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surface treatment device for die-cast aluminum alloy filter cavity, comprising a passivation tank (1), a clear water tank (2), a hot water tank (3), a lead screw moving module (4), a guide block (5), and a cleaning basket (6), characterized in that: The guide block (5) is connected to the mounting frame (8) via an electric push rod (7), and the cleaning basket (6) is suspended by the hanging rod (9) below the mounting frame (8). The hanging rod (9) is rotatably connected to the mounting frame (8), and a rotary motor (13) for driving the hanging rod (9) to rotate is installed inside the mounting frame (8). The upper port of the passivation tank (1) is connected to a tapered splash shield (11), and two sets of fans (10) are symmetrically embedded on the outer walls of the front and rear sides of the splash shield (11). A tapered guide shield (12) is installed on the inner wall of the splash shield (11).

2. The surface treatment device for die-cast aluminum alloy filter cavity according to claim 1, characterized in that: The air outlet of the air guide shroud (12) is inclined downward toward the axis of the cleaning basket (6).

3. The surface treatment device for die-cast aluminum alloy filter cavity according to claim 1, characterized in that: The cleaning basket (6) consists of a perforated plate (61), several support rods (62) fixed to the upper edge of the perforated plate (61), and a hanging ring (63) fixed to the top of the support rods (62).

4. The surface treatment device for die-cast aluminum alloy filter cavity according to claim 3, characterized in that: The lower end of the lifting rod (9) is provided with a retaining edge (92), and several support rods (91) are hinged around the retaining edge (92). The rotation angle between the support rods (91) and the retaining edge (92) is 0-90°. The lifting ring (63) is suspended on the support rods (91).

5. The surface treatment device for die-cast aluminum alloy filter cavity according to claim 4, characterized in that: The support rod (91) is provided with a V-groove (911), and the lower end face of the lifting ring (63) is provided with a V-groove (631) corresponding to each support rod (91).

6. The surface treatment device for die-cast aluminum alloy filter cavity according to claim 1, characterized in that: An arch (81) is fixed on the mounting bracket (8), and the arch (81) is fixed to the output end of the electric push rod (7).

7. The surface treatment device for die-cast aluminum alloy filter cavity according to claim 1, characterized in that: The output end of the rotary motor (13) is connected to a worm (14), and a worm wheel (15) is meshed around the worm (14). The worm wheel (15) is coaxially fixed with the boom (9).

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