Spraying shielding tool for high-pressure pump head of diesel engine

Abstract

The utility model discloses a spraying shielding tool for a high-pressure pump head of an engine, and belongs to the technical field of spraying tools. Comprising a mounting disc, a coaxial guide ring is arranged above the mounting disc, and the bottom of the guide ring is fixed to the top of the mounting disc through a plurality of connecting rods; at least three pneumatic clamps are arranged on the outer circle of the guide ring, one end of each pneumatic clamp is rotationally installed on the side face of the connecting ring through the connecting ring, and a wire outlet hole is formed in the installation disc. The utility model provides a spraying shielding tool for a high-pressure pump head of an engine, which is used for shielding a non-spraying surface and supporting the pump head to rotate at a constant speed, so that a robot spray gun can effectively spray a zinc-aluminum coating on the surface of the pump head, and meanwhile, the tool can be fixed from an opening position of a gear pump, so that the spraying shielding tool is convenient to use. And the clamping stability of the tool is ensured.

Description

Technical Field

[0001] This utility model relates to the field of spraying tooling technology, and more specifically, to a spraying masking tooling for a high-pressure pump head of a diesel engine. Background Technology

[0002] The high-pressure fuel pump head of a diesel engine is a crucial fuel supply component, continuously providing high-pressure fuel to the engine. Diesel engine high-pressure pump heads typically operate in harsh environments, including high temperatures and the presence of leaking oil and fluids, making them prone to corrosion. Corrosion weakens the metal structure of the component, and cases of engine failure due to pump head corrosion are not uncommon. Applying a zinc-aluminum micro-coating to the surface of the diesel engine's high-pressure pump head can effectively extend the time before corrosion occurs under high temperature, high humidity, and oily conditions, thus prolonging the component's lifespan and reducing the likelihood of malfunctions.

[0003] Existing diesel engine high-pressure pump heads are generally treated with oxidation or bare metal. Now, a zinc-aluminum coating with high corrosion resistance is sprayed onto the product surface. It is important to note that the high-pressure pump head itself needs to be in close contact with the diesel engine. The contact surface needs to be machined with precision to ensure a tight seal. At the same time, the high-pressure pump head is a component with a relatively irregular structure. When spraying the zinc-aluminum coating onto the surface, it is difficult to cover the exposed surface while avoiding the installation precision surface. At the same time, it is also necessary to evenly cover the surface of the component that needs to be coated so as not to affect the installation precision. Utility Model Content

[0004] To overcome the problems in the aforementioned background technology, this utility model provides an electro-permanent magnet transfer robot and its feeding device, which serves to shield the non-sprayed surface while supporting the pump head for uniform rotation, allowing the robot spray gun to effectively spray zinc-aluminum coating onto the pump head surface.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A high-pressure pump head spraying masking fixture for diesel engines includes a mounting plate, a coaxial guide ring on the top of the mounting plate, the bottom of the guide ring being fixed to the top of the mounting plate by multiple connecting rods; at least three pneumatic clamps are arranged around the outside of the guide ring, one end of each pneumatic clamp being rotatably mounted to the side of the connecting ring via a connecting ring, and a cable outlet hole is provided on the mounting plate.

[0007] Preferably, the bottom surface of the mounting plate is provided with a coaxial rotary table connector.

[0008] Preferably, a guide rod is fixedly provided at the bottom of the pneumatic clamp; a coaxial annular groove is provided at the bottom of the mounting plate, and the guide rod is slidably installed inside the annular groove.

[0009] Preferably, the farthest distance from the inner wall of the cable outlet hole to the center of the mounting plate is less than the distance from the end of the smallest dimension of the pneumatic clamp to the center of the mounting plate.

[0010] Preferably, the pneumatic clamp includes a sliding cavity, a movable rod, a piston, a first air inlet, a second air inlet, and a locking head; the sliding cavity is disposed inside the pneumatic clamp, one end of the movable rod is connected to the piston, and the piston and the movable rod are slidably installed inside the sliding cavity; one end of the movable rod passes through the outer end of the pneumatic clamp, and this end of the movable rod is connected to the locking head; the first air inlet and the second air inlet, which are connected to the inside of the sliding cavity, are respectively provided on the side walls of the pneumatic clamp at both ends of the piston.

[0011] Preferably, a limit block is provided on the side of the inner wall of the sliding cavity near the second air inlet.

[0012] Preferably, the locking head is L-shaped, and the bending direction of the locking head is upward.

[0013] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0014] This utility model provides an electro-permanent magnet transfer robot and its feeding device. First, it can support the pump head of an oil extraction engine and can rotate in conjunction with a rotating structure. Second, it adopts an internal pneumatic locking structure, which locks the gear pump opening position when supporting rotation, achieving a fixing effect and ensuring the stability of the tooling clamping. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the structure of this utility model;

[0017] Figure 2 This is a front view schematic diagram of part of the structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the connecting ring and connecting rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the pneumatic clamp of this utility model;

[0020] Figure 5 This is a schematic diagram of the opening shape of the existing CB28 type pump head gear pump.

[0021] The markings in the diagram are as follows: 1. Mounting plate; 2. Rotary table connector; 3. Pneumatic clamp; 31. Sliding cavity; 32. Movable rod; 33. Piston; 34. First air inlet; 35. Second air inlet; 36. Locking head; 37. Limiting block; 4. Guide ring; 5. Connecting ring; 6. Guide rod; 7. Annular groove; 8. Cable outlet; 9. Connecting rod. Detailed Implementation

[0022] To better understand the purpose, structure, and function of this utility model, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0023] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," 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. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in the embodiments are only for illustrating the technical solution and do not limit the scope of protection of this utility model. It is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings for those skilled in the art.

[0024] Unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Example 1:

[0026] like Figure 1-3 As shown, this application provides a diesel engine high-pressure pump head spray masking fixture, including a mounting plate 1. A coaxial guide ring 4 is provided on the top of the mounting plate 1. The bottom of the guide ring 4 is fixed to the top of the mounting plate 1 by multiple connecting rods 9. At least three pneumatic clamps 3 are provided around the outside of the guide ring 4. One end of the pneumatic clamp 3 is rotatably mounted on the side of the connecting ring 5 through the connecting ring 5. A cable outlet hole 8 is provided on the mounting plate 1.

[0027] In the above embodiments, the tooling is installed on the non-coated surface of the gear pump opening of the pump head. Specifically, the side of the mounting plate 1 with the pneumatic clamp 3 is attached to the non-coated surface of the gear pump opening. The pneumatic clamp 3 is located inside the gear pump opening. Preferably, there are three pneumatic clamps 3. The position of the pneumatic clamp 3 is adjusted according to the shape of the inner wall of the gear pump opening. Specifically, the position adjustment of the pneumatic clamp 3 is achieved by sliding the connecting ring 5 on the guide ring 4 to ensure stability during fixation. After the initial installation is completed, the external air pump is started to deliver high-pressure gas to the pneumatic clamp 3, so that the output end of the pneumatic clamp 3 clamps the inner wall of the gear pump opening to achieve fixation. For pump heads with multiple openings, multiple toolings of this application can be installed to fully ensure that the non-coated surface is covered.

[0028] Furthermore, such as Figure 2 As shown, in order to further support the tooling during pump head spraying, a coaxial rotary table connector 2 is provided on the bottom end face of the mounting plate 1. By connecting the rotary table connector 2 to the output end of the rotating structure, it is convenient to perform rotary spraying on the tooling.

[0029] Furthermore, such as Figure 2 As shown, to further ensure that the pneumatic clamp 3 is set horizontally, a guide rod 6 is fixedly set at the bottom of the pneumatic clamp 3; a coaxial annular groove 7 is set at the bottom of the mounting plate 1, and the guide rod 6 is slidably installed inside the annular groove 7. The purpose of the guide rod 6 is to support the middle section of the pneumatic clamp 3, ensure that the pneumatic clamp 3 is placed horizontally, and ensure the clamping direction.

[0030] Furthermore, such as Figure 1 As shown, in order to ensure that the external air pump is connected to the pneumatic clamp 3 on the tooling, the farthest distance from the inner wall of the outlet hole 8 to the center of the mounting plate 1 is less than the distance from the end of the smallest dimension of the pneumatic clamp 3 to the center of the mounting plate 1, so as to ensure that the outlet hole 8 is located inside the opening of the pump head gear pump.

[0031] Furthermore, such as Figure 4As shown, the pneumatic clamp 3 includes a sliding cavity 31, a movable rod 32, a piston 33, a first air inlet 34, a second air inlet 35, and a locking head 36. The sliding cavity 31 is disposed inside the pneumatic clamp 3. One end of the movable rod 32 is connected to the piston 33, and the piston 33 and the movable rod 32 are slidably installed inside the sliding cavity 31. One end of the movable rod 32 passes through the outer end of the pneumatic clamp 3, and this end of the movable rod 32 is connected to the locking head 36. The side walls of the pneumatic clamp 3 at both ends of the piston 33 are respectively provided with locking heads connected to the sliding cavity. The first air inlet 34 and the second air inlet 35 are connected inside the 31. When locked, the air pump delivers high-pressure gas through the first air inlet 34 to one side of the sliding cavity 31, thereby pushing the piston 33 and the movable rod 32 toward the inner wall of the pump head gear pump opening. Finally, the locking head 36 clamps the inner wall of the pump head opening. After the spraying is completed, the gas delivery path is changed by the valve, and the gas enters the inner wall of the sliding cavity 31 through the second air inlet 35, pushing the piston 33 and the movable rod 32 to reset in the opposite direction, so as to disassemble the tooling.

[0032] Furthermore, such as Figure 4 As shown, a limiting block 37 is provided on the inner wall of the sliding cavity 31 near the second air inlet 35, and the limiting block 37 limits the displacement of the piston 33.

[0033] Furthermore, such as Figure 2 As shown, in order to increase the contact area of ​​the locking head 36, the locking head 36 is L-shaped and the bending direction of the locking head 36 is upward.

[0034] like Figure 5 As shown in the figure, the opening of the existing CB28 type pump head gear pump is as shown in the figure. During the actual spraying, the opening of the pump head gear pump can be installed on the non-spraying surface of the gear pump opening. First, adjust the angle of the pneumatic clamp 3. Three pneumatic clamps 3 can be set at 120° intervals.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A high pressure pump head spray masking tooling for a diesel engine, characterized by: The installation disc (1) is provided with a coaxial guide ring (4) on the top, the bottom of the guide ring (4) is fixed to the top of the installation disc (1) through a plurality of connecting rods (9), a circle of the guide ring (4) is provided with at least three pneumatic clamps (3), one end of the pneumatic clamp (3) is rotatably installed on the side of the connecting ring (5) through the connecting ring (5), and the installation disc (1) is provided with a wire outlet hole (8).

2. The diesel engine high pressure pump head spray masking tooling of claim 1, wherein, The bottom end surface of the installation disc (1) is provided with a coaxial rotating table connector (2).

3. The diesel engine high pressure pump head spray masking tooling of claim 1, wherein, The bottom of the pneumatic clamp (3) is fixedly provided with a guide rod (6), and the bottom of the installation disc (1) is provided with a coaxial annular groove (7), and the guide rod (6) is slidably installed in the annular groove (7).

4. The diesel engine high pressure pump head spray masking tooling of claim 1, wherein, The farthest distance from the inner wall of the wire outlet hole (8) to the center of the installation disc (1) is less than the distance from the end of the minimum size of the pneumatic clamp (3) to the center of the installation disc (1).

5. The diesel engine high pressure pump head spray masking tooling of claim 1, wherein, The pneumatic clamp (3) comprises a sliding cavity (31), a movable rod (32), a piston (33), a first air inlet hole (34), a second air inlet hole (35) and a locking head (36), the sliding cavity (31) is arranged in the pneumatic clamp (3), one end of the movable rod (32) is connected with the piston (33), and the piston (33) and the movable rod (32) are slidably installed in the sliding cavity (31); one end of the movable rod (32) penetrates the outer side of the pneumatic clamp (3), and the end of the movable rod (32) is connected with the locking head (36); the side walls of the pneumatic clamp (3) at both ends of the piston (33) are respectively provided with the first air inlet hole (34) and the second air inlet hole (35) connected with the sliding cavity (31) inside.

6. The diesel engine high pressure pump head spray masking tooling of claim 5, wherein, The inner wall of the sliding cavity (31) is provided with a limiting block (37) on one side close to the second air inlet hole (35).

7. The diesel engine high pressure pump head spray masking tooling of claim 5, wherein, The shape of the locking head (36) is "L" type, and the bending direction of the locking head (36) is upward.

Images