Metal casting surface passivation device

Abstract

The utility model discloses a metal casting surface passivation device which comprises a workbench and a working bin. The device has the beneficial effects that the mesh belt type conveyor and the beating hammer are adopted, the mesh belt type conveyor drives the metal casting to move into the working bin, the first driving motor drives the driving synchronous wheel to rotate, the driven synchronous wheel is driven to rotate through the synchronous belt, then the shaft pipe is driven to rotate, and then the flow dividing disc and the spraying head are driven to rotate; a water pump pumps out passivation liquid in a liquid storage tank, the passivation liquid is injected into a flow dividing disc through a liquid conveying pipe and is evenly sprayed out through a spray head, the passivation liquid is sprayed to the surface of a casting, meanwhile, a second driving motor drives a beating hammer to rotate and continuously and repeatedly beat a conveying mesh belt of a mesh belt type conveyor, and then the casting is continuously turned and changed in face through beating vibration; the casting is in full contact with the passivation solution, so that the contact integrity and efficiency of the casting and the passivation solution are improved, the trouble of soaking and fishing is omitted, and the working continuity and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting processing, in particular to a surface passivation device for metal castings. Background Art

[0002] Passivation refers to the process of oxidizing a metal with a strong oxidant or electrochemical method to render its surface inactive. It is a method of transforming the metal surface into a state that is not easily oxidized, thereby slowing the rate of metal corrosion. Passivation is caused by the interaction between the metal and the oxidizing medium, forming a very thin, dense, and well-covered passive film on the metal surface that can firmly adhere to the metal surface. This film exists as an independent phase, usually a compound of oxygen and metal. It completely isolates the metal from the corrosive medium, preventing direct contact between the metal and the corrosive medium, thereby essentially stopping the metal from dissolving and forming a passive state to prevent corrosion. In addition, the phenomenon of an active metal or alloy in which the chemical activity is greatly reduced and becomes a precious metal state is also called passivation.

[0003] After searching, it was found that the publication number is CN212375380U, and the name is a metal casting surface passivation device. This application points out the problem that most of the passivation devices on the market directly immerse the casting in the passivation liquid during passivation, so the parts clamped by the clamp are difficult to be processed. The passivation liquid is first sprayed on the casting by spraying, so the casting can be passivated in batches with fluidity, ensuring the processing speed. When the casting is placed on the toothed conveyor belt, only a small area of ​​the lower surface of the casting is not exposed to the passivation liquid. Therefore, the sprayed casting is transported to the inside of the immersion tank, so as to ensure that the casting is fully exposed to the passivation liquid, avoiding the traditional passivation method. The need for secondary passivation treatment at the clamping part, so it is difficult to ensure the same passivation degree as other parts. After passivation, the passivated casting is moved to the inside of the cleaning chamber by the clamping claw. Therefore, a fan is used to blow out the passivation liquid remaining on the surface of the casting, and an inclined baffle is provided on one side of the tooth conveyor belt and one side of the cleaning chamber. When the nozzle sprays the passivation liquid to the casting, the passivation liquid on the tooth conveyor belt can be prevented from flowing out of the interior of the spray chamber, and the flow through the gap of the screen will soak the chamber, thereby reducing the waste of passivation liquid. However, during the use of this application, the passivation liquid sprayed from above the casting can only be sprayed and passivated on the upper surface of the casting, and the bottom surface of the casting cannot be effectively sprayed. There are many dead angles for spraying, and the spraying efficiency is low. In addition, this application still adopts the immersion method, and still adopts a clamp for clamping and immersion. The clamp can only operate on one casting at a time, and repeated grasping operations are required, which affects the continuity and work efficiency of the work. At the same time, it is difficult to automatically pick up the clamp, and the structure is very complicated and the cost of use is high. Further improvements can be made.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the prior art, the present invention provides a surface passivation device for metal castings, which has the advantage of improving work efficiency and thus solves the problems in the above-mentioned background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned advantage of improved work efficiency, the specific technical solutions adopted by the present invention are as follows:

[0009] The surface passivation device of metal castings includes a workbench and a work chamber, wherein both ends of the workbench are fixedly connected with a cantilever, and a mesh belt conveyor is fixedly installed on the top surface of the cantilever, and a work chamber is fixedly installed on the top surface of the workbench, the mesh belt conveyor passes through the work chamber, and a rotating rod is provided inside the work chamber between the mesh belt conveyors, and the rotating rod passes through the side wall of the work chamber and is rotatably connected to the work chamber, the outer surface of the rotating rod is connected to a striking hammer through a spring, a second drive motor is fixedly installed on the back surface of the work chamber, and the output end of the second drive motor is fixedly connected to one end of the rotating rod, the top surface of the work chamber passes through the rotating connection There is a shaft tube, and the bottom surface of the shaft tube is connected with a diverter disk, and the bottom surface of the diverter disk is connected with a nozzle, the top surface of the shaft tube is rotatably connected to the infusion tube through a water rotary connector, and the outer surface of the shaft tube is fixedly sleeved with a driven synchronous wheel, and the driven synchronous wheels are connected to each other through a synchronous belt, a first drive motor is fixedly installed on the top surface of one end of the working chamber, and a drive synchronous wheel is installed on the output end of the first drive motor, and the drive synchronous wheel is connected to one of the driven synchronous wheels through a synchronous belt, a liquid storage tank is installed in front of the workbench, and a water pump is fixedly installed on the top surface of the liquid storage tank, and the output end of the water pump is connected to one end of the infusion tube.

[0010] Furthermore, a plurality of rotating rods are arranged at equal intervals, and a plurality of groups of striking hammers are distributed at equal intervals on the surface of the rotating rod.

[0011] Furthermore, both ends of the spring are fixedly connected to the rotating rod and the striking hammer respectively, and the length of the spring is greater than the vertical distance between the rotating rod and the top surface of the mesh belt conveyor.

[0012] Furthermore, the diverter discs are arranged in multiple groups at equal intervals, and the nozzles are arranged in multiple groups at equal angles along the central axis of the diverter disc, and the nozzles are arranged obliquely downward.

[0013] Furthermore, a water trough is provided at the bottom of the working chamber below the conveyor mesh belt of the mesh belt conveyor.

[0014] Furthermore, a return pipe is connected through the bottom surface of the water tank, and the other end of the return pipe is connected through the liquid storage tank.

[0015] Furthermore, door curtains are hung on the top surfaces at both ends of the working chamber.

[0016] Furthermore, the liquid storage tank contains a passivation liquid, and the level of the passivation liquid is lower than the bottom surface of the opening at the other end of the reflux pipe.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a metal casting surface passivation device with the following beneficial effects:

[0019] (1) The utility model adopts a mesh belt conveyor and a striking hammer. When passivating the surface of a metal casting, the metal can be gradually placed at one end of the mesh belt conveyor. The mesh belt conveyor drives the metal casting to move to the working bin. The first drive motor drives the driving synchronous wheel to rotate, and drives the driven synchronous wheel to rotate through the synchronous belt, thereby driving the shaft tube to rotate, and then driving the diversion plate and the nozzle to rotate. At the same time, the water pump draws out the passivation liquid in the liquid storage tank, injects it into the diversion plate through the infusion pipe, and sprays it evenly through the nozzle, spraying the passivation liquid on the surface of the casting. At the same time, the second drive motor drives the striking hammer to rotate, and repeatedly strikes the conveying mesh belt of the mesh belt conveyor, and then causes the casting to continuously turn over and change its surface through striking vibration, so that the casting is fully in contact with the passivation liquid, thereby improving the integrity and efficiency of the contact between the casting and the passivation liquid, eliminating the trouble of soaking and scooping, and improving the continuity and efficiency of the work.

[0020] (2) The utility model adopts a multi-component flow disk and a nozzle. During the movement of the casting, the multi-component flow disk and the nozzle rotate, thereby expanding the spraying range and uniformity of the passivation liquid, improving the spraying efficiency of the passivation liquid, and further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the external structure of the front elevation of the metal casting surface passivation device proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the rear elevation external structure of the metal casting surface passivation device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the installation of the striking hammer proposed by the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the internal structure of the metal casting surface passivation device.

[0026] In the picture:

[0027] 1. Workbench; 2. Work chamber; 3. Shelf; 4. Mesh belt conveyor; 5. Diverter plate; 6. Shaft tube; 7. Nozzle; 8. Driven synchronous pulley; 9. Synchronous belt; 10. First drive motor; 11. Drive synchronous pulley; 12. Infusion tube; 13. Water rotary connector; 14. Door curtain; 15. Water tank; 16. Rotating rod; 17. Beating hammer; 18. Spring; 19. Liquid storage tank; 20. Water pump; 21. Return pipe; 22. Second drive motor. DETAILED DESCRIPTION

[0028] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] According to an embodiment of the present utility model, a surface passivation device for metal castings is provided.

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-4As shown, the metal casting surface passivation device according to the embodiment of the present invention includes a workbench 1 and a work bin 2, a cantilever 3 is fixedly connected to both ends of the workbench 1, and a mesh belt conveyor 4 is fixedly installed on the top surface of the cantilever 3, and a work bin 2 is fixedly installed on the top surface of the workbench 1, the mesh belt conveyor 4 passes through the work bin 2, which is convenient for conveying castings, and a rotating rod 16 is provided inside the work bin 2 between the mesh belt conveyor 4, and the rotating rod 16 passes through the side wall of the work bin 2 and is rotatably connected to the work bin 2, the outer surface of the rotating rod 16 is connected to a striking hammer 17 through a spring 18, and a second drive motor 22 is fixedly installed on the back surface of the work bin 2, and The output end of the second drive motor 22 is fixedly connected to one end of the rotating rod 16, which is a common drive structure. The top surface of the working chamber 2 is rotatably connected to the shaft tube 6, and the bottom surface of the shaft tube 6 is connected to the diverter plate 5, and the bottom surface of the diverter plate 5 is connected to the nozzle 7. The top surface of the shaft tube 6 is rotatably connected to the infusion tube 12 through the water rotary connector 13. The water rotary connector 13 does not affect the rotation of the shaft tube 6 and the liquid supply. It is a common device, and the outer surface of the shaft tube 6 is fixedly sleeved with a driven synchronous wheel 8, and the driven synchronous wheels 8 are connected to each other through a synchronous belt 9. The synchronous belts 9 are staggered, which is a common connection form. The top surface of one end of the working chamber 2 is fixedly installed with a first drive motor 10, and the output end of the first drive motor 10 is equipped with a drive synchronous wheel 11, and the drive synchronous wheel 11 is connected to one of the driven synchronous wheels 8 through a synchronous belt 9, a liquid storage tank 19 is installed in front of the workbench 1, and a water pump 20 is fixedly installed on the top surface of the liquid storage tank 19, and the output end of the water pump 20 is connected to one end of the infusion pipe 12, and the water pump 20 is connected to the liquid storage tank 19 through a suction pipe. When the surface of the metal casting is passivated, the metal can be gradually placed on one end of the mesh belt conveyor 4, and the mesh belt conveyor 4 drives the metal casting to move to the working bin 2. The first drive motor 10 drives the drive synchronous wheel 11 to rotate, and the mesh belt 9 is driven by the mesh belt conveyor 4. The driven synchronous wheel 8 rotates, which in turn drives the shaft tube 6 to rotate, and then drives the diverter plate 5 and the nozzle 7 to rotate. At the same time, the water pump 20 extracts the passivation liquid in the liquid storage tank 19, injects it into the diverter plate 5 through the infusion pipe 12, and sprays it evenly through the nozzle 7 to spray the passivation liquid on the surface of the casting. At the same time, the second drive motor 22 drives the striking hammer 17 to rotate, repeatedly striking the conveyor belt of the mesh belt conveyor 4, and then the casting is continuously turned over and changed through the striking vibration, so that the casting is fully in contact with the passivation liquid, thereby improving the integrity and efficiency of the contact between the casting and the passivation liquid, eliminating the trouble of soaking and scooping, and improving the continuity and efficiency of the work.

[0031] In one embodiment, a plurality of rotating rods 16 are arranged at equal intervals, and a plurality of groups of striking hammers 17 are distributed at equal intervals on the surface of the rotating rod 16 to improve striking uniformity and work efficiency.

[0032] In one embodiment, the two ends of the spring 18 are fixedly connected to the rotating rod 16 and the striking hammer 17 respectively, and the length of the spring 18 is greater than the vertical distance between the rotating rod 16 and the top surface of the mesh belt conveyor 4, ensuring that the striking hammer 17 can strike the conveyor belt of the mesh belt conveyor 4.

[0033] In one embodiment, multiple groups of diverter plates 5 are arranged at equal intervals, and multiple nozzles 7 are arranged at equal angles along the central axis of the diverter plate 5, and the nozzles 7 are arranged obliquely downward. During the movement of the casting, the multiple groups of diverter plates 5 and nozzles 7 rotate, thereby expanding the spraying range and uniformity of the passivation liquid, improving the spraying efficiency of the passivation liquid, and further improving work efficiency.

[0034] In one embodiment, a water tank 15 is provided at the bottom of the working chamber 2 below the conveying mesh belt of the mesh belt conveyor 4 to facilitate the collection of the passivation liquid.

[0035] In one embodiment, a return pipe 21 is connected to the bottom surface of the water tank 15, and the other end of the return pipe 21 is connected to the liquid storage tank 19. The liquid storage tank 19 contains passivation liquid, and the level of the passivation liquid is lower than the bottom surface of the opening at the other end of the return pipe 21, which facilitates the recycling of the passivation liquid.

[0036] In one embodiment, door curtains 14 are hung on the top surfaces of both ends of the working chamber 2 to prevent the passivation liquid from splashing out of the working chamber 2.

[0037] Working principle:

[0038] When passivating the surface of the metal casting, the metal can be gradually placed on one end of the mesh belt conveyor 4. The mesh belt conveyor 4 drives the metal casting to move into the working chamber 2. The first drive motor 10 drives the driving synchronous wheel 11 to rotate, and drives the driven synchronous wheel 8 to rotate through the synchronous belt 9, thereby driving the shaft tube 6 to rotate, and then driving the diverter plate 5 and the nozzle 7 to rotate. At the same time, the water pump 20 extracts the passivation liquid in the liquid storage tank 19, injects it into the diverter plate 5 through the infusion pipe 12, and sprays it evenly through the nozzle 7 to spray the passivation liquid on the surface of the casting. At the same time, the second drive The motor 22 drives the striking hammer 17 to rotate, repeatedly striking the conveyor mesh belt of the mesh belt conveyor 4, and then the casting is constantly turned over and changed through the striking vibration, so that the casting is fully in contact with the passivation liquid, thereby improving the integrity and efficiency of the contact between the casting and the passivation liquid, eliminating the trouble of soaking and scooping, and improving the continuity and efficiency of the work. At the same time, during the movement of the casting, the multi-component flow plate 5 and the nozzle 7 are rotated, thereby expanding the spraying range and uniformity of the passivation liquid, improving the spraying efficiency of the passivation liquid, and further improving work efficiency.

[0039] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A metal casting surface passivation device, characterized in that: The invention comprises a workbench (1) and a work bin (2), wherein both ends of the workbench (1) are fixedly connected with a cantilever frame (3), and a mesh belt conveyor (4) is fixedly installed on the top surface of the cantilever frame (3), and a work bin (2) is fixedly installed on the top surface of the workbench (1), the mesh belt conveyor (4) passes through the work bin (2), and a rotating rod (16) is provided inside the work bin (2) between the mesh belt conveyor (4), and the rotating rod (16) passes through the side wall of the work bin (2) and is rotatably connected to the work bin (2), the outer surface of the rotating rod (16) is connected to a striking hammer (17) through a spring (18), a second driving motor (22) is fixedly installed on the back surface of the work bin (2), and the output end of the second driving motor (22) is fixedly connected to one end of the rotating rod (16), the top surface of the work bin (2) passes through a shaft tube (6) that is rotatably connected, and The bottom surface of the shaft tube (6) is connected to a diverter disk (5), and the bottom surface of the diverter disk (5) is connected to a nozzle (7). The top surface of the shaft tube (6) is rotatably connected to a liquid infusion tube (12) through a water rotary connector (13). A driven synchronous wheel (8) is fixedly sleeved on the outer surface of the shaft tube (6), and the driven synchronous wheels (8) are connected to each other through a synchronous belt (9). A first driving motor (10) is fixedly installed on the top surface of one end of the working chamber (2), and a driving synchronous wheel (11) is installed at the output end of the first driving motor (10), and the driving synchronous wheel (11) is connected to one of the driven synchronous wheels (8) through a synchronous belt (9). A liquid storage tank (19) is installed in front of the workbench (1), and a water pump (20) is fixedly installed on the top surface of the liquid storage tank (19), and the output end of the water pump (20) is connected to one end of the liquid infusion tube (12).

2. The metal casting surface passivation device according to claim 1, characterized in that: A plurality of rotating rods (16) are arranged at equal intervals, and a plurality of groups of striking hammers (17) are distributed at equal intervals on the surface of the rotating rod (16).

3. The metal casting surface passivation device according to claim 1, characterized in that: The two ends of the spring (18) are fixedly connected to the rotating rod (16) and the striking hammer (17), respectively, and the length of the spring (18) is greater than the vertical distance between the rotating rod (16) and the top surface of the mesh belt conveyor (4).

4. The metal casting surface passivation device according to claim 1, characterized in that: The diverter discs (5) are arranged in multiple groups at equal intervals, and the nozzles (7) are arranged in multiple groups at equal angles along the central axis of the diverter disc (5), and the nozzles (7) are arranged obliquely downward.

5. The metal casting surface passivation device according to claim 1, characterized in that: A water trough (15) is provided at the bottom of the working chamber (2) below the conveying mesh belt of the mesh belt conveyor (4).

6. The metal casting surface passivation device according to claim 5, characterized in that: The bottom surface of the water tank (15) is connected to a return pipe (21), and the other end of the return pipe (21) is connected to the liquid storage tank (19).

7. The metal casting surface passivation device according to claim 1, characterized in that: Door curtains (14) are hung on the top surfaces at both ends of the working chamber (2).

8. The metal casting surface passivation device according to claim 6, characterized in that: The liquid storage tank (19) contains a passivation liquid, and the level of the passivation liquid is lower than the bottom surface of the opening at the other end of the return pipe (21).

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