A grinding apparatus and method for hydraulic valve cone face seals

Abstract

The application provides a grinding device for hydraulic valve conical surface sealing, and belongs to the field of hydraulic valve debugging equipment. The grinding device comprises a fixing part, a smearing part and a moving part. The fixing part is provided with a limiting structure and a movable assembly for driving the limiting structure to rotate. The smearing part is used for smearing lubricating oil or / and grinding paste on the structure part. The moving part is used for limiting the structure part and driving the structure part to move. The grinding device for hydraulic valve conical surface sealing can automatically complete the conveying of the structure part, the smearing of lubricating oil and grinding paste and the grinding of the structure part through the cooperation of the fixing part, the smearing part and the moving part, effectively solves the problem that the leakage of the valve part exceeds the standard, and improves the sealing effect of the valve part. The grinding device for hydraulic valve conical surface sealing also has the characteristics of high automation degree, saving of manpower and high work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic valve commissioning equipment, and more specifically, relates to a grinding device and method for hydraulic valve conical surface seals. Background Technology

[0002] Hydraulic valves are widely used in the hydraulic systems of special vehicles. During performance testing of hydraulic valves, the conical seals of some valve components require very low leakage. However, a large number of valves produced in the production system exhibit excessive leakage during testing, which significantly impacts production costs and timelines.

[0003] Therefore, it is necessary to develop a grinding device and method for the conical seal of hydraulic valves. Summary of the Invention

[0004] The purpose of this invention is to provide a grinding device and method for the conical surface seal of hydraulic valves, aiming to solve the technical problem of excessive leakage in valve components.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a grinding device for the conical surface seal of a hydraulic valve, comprising:

[0006] The fixing component is provided with a limiting structure and a movable component for driving the limiting structure to rotate.

[0007] Application parts, used to apply lubricating oil and / or polishing paste to structural components;

[0008] A moving component is used to limit the structure and drive the structure to move.

[0009] Preferably, the limiting structure is a three-jaw chuck.

[0010] Preferably, the applicator comprises:

[0011] The main body of the coating is a structure with adjustable length;

[0012] The applicator head is movably connected to the applicator body and is used to apply the lubricating oil and the polishing paste respectively.

[0013] A feeding component, connected to the coating body, is used to respectively contain the lubricating oil and the polishing paste, and the feeding component is connected to the coating head.

[0014] Preferably, the applicator further includes a heating structure for heating the lubricating oil and the polishing paste.

[0015] Preferably, the moving part includes:

[0016] Moving parts body;

[0017] A material holding component, connected to the main body of the moving component, is used to accommodate several of the structural components;

[0018] A connector, connected to the moving part body, for connecting with the structural component;

[0019] A feeding structure, connected to the moving part body, is used to transport the structural part.

[0020] Preferably, the connector includes:

[0021] The shape variant has a first usage state and a second usage state. In the first usage state, the shape variant has an "I" shaped structure; in the second usage state, the shape variant has an "N" shaped structure.

[0022] A buffer sleeve, fitted over the deformable body, is used to deform as the deformable body is adjusted in its usage state.

[0023] Preferably, it further includes a worktable, on which the fixing component, the coating component, and the moving component are provided.

[0024] The present invention also provides a grinding method for a hydraulic valve conical surface seal, comprising the following steps:

[0025] Step 1: Clamp and align the valve core, apply lubricating oil to the outer circle of the pilot valve core, and apply grinding paste to the 60-degree inclined surface;

[0026] Step 2: Apply polishing paste to the 60-degree bevel of the pilot valve core, insert it into the inner hole of the valve core, press it against the end face of the pilot valve core and keep it stationary;

[0027] Step 3: Rotate the valve core at 70-100 rpm for 4-5 minutes;

[0028] Step 4: Check whether the axial movement of the pilot valve core is flexible and without jamming until it moves flexibly; otherwise, re-grind it.

[0029] Preferably, the method further includes the following steps:

[0030] Step 5: Clamp and align the valve set, apply lubricating oil to the outer circle of the valve core, and apply grinding paste to the 60-degree inclined surface;

[0031] Step 6: Apply 4000-grit polishing paste to the 60-degree bevel of the valve core, insert it into the inner hole of the valve sleeve, press against the end face of the valve core and keep it stationary;

[0032] Step 7: Start the machine tool at 70-100 rpm and run for 4-5 minutes;

[0033] Step 8: Check whether the valve core moves axially freely without jamming until it moves freely; otherwise, re-grind it.

[0034] The beneficial effects of the grinding device and method for hydraulic valve conical surface seals provided by this invention are as follows: Compared with the prior art, the grinding device and method for hydraulic valve conical surface seals of this invention, through the cooperation of fixed parts, coating parts, and moving parts, can automatically complete the transportation of structural parts, application of lubricating oil and grinding paste, and grinding of structural parts, effectively solving the problem of excessive leakage of valve parts and improving the sealing effect of valve parts. This grinding device for hydraulic valve conical surface seals also features a high degree of automation, labor saving, and high operating efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the connection state of valve sleeve, valve core, and pilot valve core in the prior art; the circled position is the grinding position of the grinding device for hydraulic valve cone surface sealing provided by the present invention;

[0037] Figure 2 A schematic diagram illustrating the connection state between the limiting structure and structural components in a grinding device for a hydraulic valve cone surface seal, provided as an embodiment of the present invention.

[0038] Figure 3 for Figure 2 Exploded view of the structure shown;

[0039] Figure 4 This is a schematic diagram of a grinding device for a hydraulic valve cone surface seal provided in an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the internal structure of the coating component used in a grinding device for a hydraulic valve cone surface seal, provided in an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of the moving parts used in a grinding device for a hydraulic valve cone surface seal, provided in an embodiment of the present invention;

[0042] Figure 7 for Figure 6 An enlarged schematic diagram of the structure at point A in the middle.

[0043] In the diagram: 1. Fixing component; 11. Limiting structure; 12. Moving component; 2. Applying component; 21. Applying body; 211. Housing; 212. Electric telescopic rod; 213. Connecting end; 22. Feeding component; 221. Material holding bladder; 222. Air blowing component; 23. Applying head; 231. Connecting body; 232. Rotating head; 3. Moving component; 31. Moving component body; 32. Material holding component; 33. Feeding structure; 34. Connecting component; 341. Deformation body; 342. Buffer sleeve; 4. Worktable. Detailed Implementation

[0044] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0045] Please refer to the following: Figures 2 to 7 The present invention will now describe a grinding device for sealing the conical surface of a hydraulic valve. The grinding device for sealing the conical surface of a hydraulic valve includes a fixing component 1, an applicator 2, and a moving component 3. The fixing component 1 is provided with a limiting structure 11 and a movable component 12 for driving the limiting structure 11 to rotate. The applicator 2 is used to apply lubricating oil and / or grinding paste to the structural component. The moving component 3 is used to limit the structural component and drive it to move.

[0046] The structural components include a valve sleeve, a valve core, and a pilot valve core. A limiting structure 11 is used to limit one structural component, and then a moving component 3 is used to limit the other structural component. The moving component 3 moves the other structural component to the working area of ​​the applicator 2. The applicator 2 automatically applies lubricating oil and / or polishing paste to the surface of the other structural component. Then, the moving component 3 drives the other structural component to insert into the structural component limited by the limiting structure 11. The movable component 12 drives the structural component limited by the limiting structure 11 to rotate until the axial movement of the other structural component is flexible and without jamming.

[0047] This invention provides a grinding device for the conical surface seal of a hydraulic valve. Compared with existing technologies, through the cooperation of the fixing component 1, the coating component 2, and the moving component 3, it can automatically complete the transportation of structural components, the application of lubricating oil and grinding paste, and the grinding of structural components, effectively solving the problem of excessive leakage in valve components and improving the sealing effect of valve components. This grinding device for the conical surface seal of a hydraulic valve also features a high degree of automation, labor saving, and high operating efficiency.

[0048] Please refer to some embodiments of the present invention as well. Figures 2 to 7The limiting structure 11 is a three-jaw chuck. The movable component 12 includes a drive motor and a rotating shaft structure connected at one end to the drive motor and at the other end to the three-jaw chuck. The drive motor drives the rotating shaft structure to rotate, thereby driving the limiting structure 11 to rotate. The limiting structure 11 can limit the valve sleeve and valve core respectively.

[0049] Please refer to some embodiments of the present invention as well. Figures 2 to 7 The applicator 2 includes: an applicator body 21, an applicator head 23, and a feeder 22. The applicator body 21 is an adjustable length structure. The applicator head 23 is movably connected to the applicator body 21 and is used to apply lubricating oil and polishing paste respectively. The feeder 22 is connected to the applicator body 21 and is used to hold lubricating oil and polishing paste respectively. The feeder 22 is connected to the applicator head 23.

[0050] The applicator 21 includes a housing 211, an electric telescopic rod 212 disposed within the housing 211, and a connecting end 213 connected to the housing 211. The connecting end 213 includes a suction cup body and an extension block disposed on the edge of the suction cup body, the extension block having a through screw hole.

[0051] The suction cup body is connected to the housing 211. The suction cup body is made of a soft material. The feeding component 22 includes a material-holding bladder 221 and an air-blowing assembly 222 disposed within the housing 211. The material-holding bladder 221 has multiple connection points for connecting to the inner wall of the housing 211. There are two material-holding bladders 221. One material-holding bladder 221 is used to hold lubricating oil, and its bottom end is connected to the applicator head 23 via a pipe, while its top end is connected to the air-blowing assembly 222 via a pipe. The other material-holding bladder 221 is used to hold polishing paste, and its bottom end is connected to the applicator head 23 via a pipe, while its top end is connected to the air-blowing assembly 222 via a pipe. Specifically, the air-blowing assembly 222 is connected to a solenoid valve via a pipe, and the solenoid valve is connected to both material-holding bladders 221 via pipes. The solenoid valve is connected to the inside of the suction cup body via a pipe.

[0052] The applicator head 23 includes a connector 231 connected to the applicator body 21 at one end, and a rotating head 232 connected to the other end of the connector 231. The rotating head 232 is provided with a first discharge port and a second discharge port that are respectively connected to two material bladders 221. The rotating head 232 is provided with a scraper made of a material that mimics the skin of human fingers.

[0053] In this embodiment, the applicator 2 also includes a heating structure for heating the lubricating oil and polishing paste. The inner wall of the housing 211 is coated with a heat-insulating coating. The heating assembly consists of a heating wire wound around the material reservoir 221 and a heating element connected to the heating wire.

[0054] As one specific implementation of this invention, please refer to the following: Figures 2 to 7 The moving part 3 includes a moving part body 31, a holding part 32, a connecting part 34, and a feeding structure 33. The holding part 32 is connected to the moving part body 31 and is used to hold a number of structural parts. The connecting part 34 is connected to the moving part body 31 and is used to connect with the structural parts. The feeding structure 33 is connected to the moving part body 31 and is used to transport the structural parts.

[0055] In an embodiment, the connector 34 includes a deformable part 341 and a buffer sleeve 342. The deformable part 341 has a first use state and a second use state. In the first use state, the deformable part 341 is shaped like an "I" and in the second use state, the deformable part 341 is shaped like an "N". The buffer sleeve 342 is fitted over the deformable part 341 and is used to deform as the use state of the deformable part 341 is adjusted.

[0056] The cushioning sleeve 342 can be a U-shaped sleeve. The cushioning sleeve 342 can completely or partially cover the deformed part 341.

[0057] As one specific implementation of this invention, please refer to the following: Figures 2 to 7 It also includes a workbench 4, on which a fixing component 1, an application component 2, and a moving component 3 are provided.

[0058] The present invention also provides a grinding method for a hydraulic valve conical surface seal, comprising the following steps:

[0059] S1. Clamp and align the valve core, apply lubricating oil to the outer circle of the pilot valve core, and apply grinding paste to the 60-degree inclined surface.

[0060] S2. Apply polishing paste to the 60-degree bevel of the pilot valve core, insert it into the inner hole of the valve core, press against the end face of the pilot valve core and keep it stationary.

[0061] S3. Drive the valve core to rotate at a speed of 70-100 rpm for 4-5 minutes;

[0062] S4. Check whether the axial movement of the pilot valve core is flexible and without jamming until it moves flexibly; otherwise, re-grind it.

[0063] The present invention also provides a grinding method for a conical seal of a hydraulic valve, which further includes the following steps:

[0064] S5. Clamp and align the valve set, apply lubricating oil to the outer circle of the valve core, and apply grinding paste to the 60-degree inclined surface.

[0065] S6. Apply 4000-mesh polishing paste to the 60-degree bevel of the valve core, insert it into the inner hole of the valve sleeve, press against the end face of the valve core and keep it stationary;

[0066] S7. Start the machine tool at 70-100 rpm and run for 4-5 minutes;

[0067] S8. Check whether the valve core moves axially freely without jamming until it moves freely; otherwise, re-grind it.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grinding device for the conical surface seal of a hydraulic valve, characterized in that, include: The fixing member (1) is provided with a limiting structure (11) and a movable component (12) for driving the limiting structure (11) to rotate. The applicator (2) is used to apply lubricating oil and / or polishing paste to the structural components; The moving part (3) is used to limit the structural component and drive the structural component to move; The coating component (2) includes: The main body of the coating (21) is a structure with adjustable length; The applicator head (23) is movably connected to the applicator body (21) and is used to apply the lubricating oil and the polishing paste respectively. The feeder (22) is connected to the applicator (21) and is used to contain the lubricating oil and the polishing paste respectively. The feeder (22) is connected to the applicator (23). The moving part (3) includes: Moving part body (31); The material holding component (32) is connected to the moving part body (31) and is used to accommodate several of the structural components; A connector (34), connected to the moving part body (31), is used to connect with the structural part; The feeding structure (33) is connected to the moving part body (31) and is used to transport the structural part; The connector (34) includes: The shape variant (341) has a first usage state and a second usage state. In the first usage state, the shape variant (341) has an "I" shaped structure; in the second usage state, the shape variant (341) has an "N" shaped structure. A buffer sleeve (342) is fitted over the deformable body (341) and is used to deform as the deformable body (341) is adjusted in its state of use.

2. The grinding device for the conical surface seal of a hydraulic valve as described in claim 1, characterized in that: The limiting structure (11) is a three-jaw chuck.

3. The grinding device for the conical surface seal of a hydraulic valve as described in claim 1, characterized in that: The applicator (2) also includes a heating structure for heating the lubricating oil and the polishing paste.

4. A grinding device for a hydraulic valve cone surface seal as described in any one of claims 1-3, characterized in that, It also includes a workbench (4), on which the fixing component (1), the coating component (2), and the moving component (3) are provided.

5. A grinding method for a grinding apparatus for a hydraulic valve conical surface seal as described in claim 4, comprising the following steps: Step 1: Clamp and align the valve core, apply lubricating oil to the outer circle of the pilot valve core, and apply grinding paste to the 60-degree inclined surface; Step 2: Apply polishing paste to the 60-degree bevel of the pilot valve core, insert it into the inner hole of the valve core, press it against the end face of the pilot valve core and keep it stationary; Step 3: Rotate the valve core at 70-100 rpm for 4-5 minutes; Step 4: Check whether the axial movement of the pilot valve core is flexible and without jamming until it moves flexibly; otherwise, re-grind it.

6. The grinding method as described in claim 5 further includes the following step: Step 5: Clamp and align the valve set, apply lubricating oil to the outer circle of the valve core, and apply grinding paste to the 60-degree inclined surface; Step 6: Apply 4000-grit polishing paste to the 60-degree bevel of the valve core, insert it into the inner hole of the valve sleeve, press against the end face of the valve core and keep it stationary; Step 7: Start the machine tool at 70-100 rpm and run for 4-5 minutes; Step 8: Check whether the valve core moves axially freely without jamming until it moves freely; otherwise, re-grind it.

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