Riveting tool for steel ball of valve seat

Abstract

The utility model discloses a valve seat steel ball riveting tool which comprises a base, a hydraulic cylinder and a riveting rod, one side of the base is fixedly connected with a stand column, the stand column is fixedly connected with a cross beam, the hydraulic cylinder is fixedly installed on the cross beam, an output shaft of the hydraulic cylinder is vertically arranged downwards, and the upper end of the riveting rod is detachably connected with the output shaft of the hydraulic cylinder. A movable bottom plate is placed on the base, a plurality of bottom supporting plates, a plurality of back limiting plates and a plurality of side limiting plates are detachably connected to the movable bottom plate, the valve seat is placed on the bottom supporting plates, one side of the valve seat is tightly attached to the back limiting plates, the other side of the valve seat is tightly attached to the side limiting plates, and the side, needing to be riveted with steel balls, of the valve seat is vertically upward. According to the valve seat steel ball riveting tool, the steel balls on the valve seat can be rapidly riveted, and the valve seat steel ball riveting tool can meet the requirements of valve seats of different models for riveting the steel balls. The riveting process is easy to operate, and the whole riveting tool is convenient to remodel.

Description

Technical Field

[0001] The utility model belongs to the technical field of riveting tools, and particularly relates to a valve seat steel ball riveting tooling. Background Art

[0002] The valve seat is used for installing various control valves, and there are numerous chambers formed by machining inside the valve seat. These chambers are distributed vertically and horizontally. In order to machine these chambers, the machining tool needs to leave machining process openings on the surface of the valve seat. After machining, these machining process openings need to be sealed to prevent leakage. The existing sealing process generally forms a seal by assembling gaskets, sealing blocks, etc., which requires additional machining of workpieces, increases the assembly process, and at the same time, the sealing performance of the machining process openings cannot be effectively guaranteed. Pressing steel balls into the machining process openings can also effectively form a good seal for the process openings, and there is no need to additionally increase workpieces. However, the valve seat has a complex structure and an irregular shape, and there is a lack of a flexible and effective riveting tooling for pressing the steel balls. Summary of the Utility Model

[0003] To solve the above technical problems, the technical solution adopted by the utility model is: a valve seat steel ball riveting tooling, which includes a base, a hydraulic cylinder, and a riveting rod. One side of the base is fixedly connected with a column, and a cross beam is fixedly connected to the column. The hydraulic cylinder is fixedly installed on the cross beam, and the output shaft of the hydraulic cylinder is arranged vertically downward. The upper end of the riveting rod is detachably connected to the output shaft of the hydraulic cylinder. An active bottom plate is placed on the base, and a plurality of bottom support plates, a plurality of back limit plates, and a plurality of side limit plates are detachably connected to the active bottom plate. The valve seat is placed on the bottom support plates, one side of the valve seat is closely attached to the back limit plate, and the other side is closely attached to the side limit plate. The side of the valve seat where the steel ball needs to be riveted faces vertically upward.

[0004] As a preference of the above technical solution, the bottom support plates, the back limit plates, and the side limit plates are respectively connected to the active bottom plate by bolts, and a plurality of through holes for the bolts to pass through are provided on the active bottom plate.

[0005] As a preference of the above technical solution, side plates are respectively fixedly connected to both sides of the base, a plurality of threaded holes are provided on the side plates, a limit screw is threadedly connected to the threaded holes, a nut is provided at one end of the limit screw, and the other end passes through the threaded hole and abuts against the active bottom plate.

[0006] As a preference of the above technical solution, an installation groove is provided at one end of the limit screw close to the active bottom plate, and a ball is rotatably installed in the installation groove, and the ball is restricted in the installation groove.

[0007] As a preference of the above technical solution, a groove is provided at the lower end of the riveting rod.

[0008] As a preference of the above technical solution, the upper end of the riveting rod is threadedly connected to the output shaft of the pressing cylinder.

[0009] The beneficial effects of the present utility model are as follows: The valve seat steel ball riveting tooling of the present utility model can achieve the rapid riveting of steel balls on the valve seat and can meet the needs of riveting steel balls for different models of valve seats. The riveting process is simple to operate, and the entire riveting tooling is convenient to change types. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present utility model;

[0011] Figure 2 is a schematic structural diagram of the base;

[0012] Figure 3 is a schematic structural diagram of the riveting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0014] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0015] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0016] Such as Figures 1-3As shown in the figure, the valve seat steel ball riveting tooling includes a base 1, a hydraulic cylinder 2, and a riveting rod 3. One side of the base 1 is fixedly connected with a column 4, and a cross beam 5 is fixedly connected to the column 4. The hydraulic cylinder 2 is fixedly installed on the cross beam 5, and the output shaft of the hydraulic cylinder 2 is arranged vertically downward. The upper end of the riveting rod 3 is detachably connected to the output shaft of the hydraulic cylinder 2. An active bottom plate 6 is placed on the base 1, and a number of bottom support plates 7, a number of back limit plates 8, and a number of side limit plates 9 are detachably connected to the active bottom plate 6. The valve seat 10 is placed on the bottom support plates 7. One side of the valve seat 10 is closely attached to the back limit plate 8, and the other side is closely attached to the side limit plate 9. The side of the valve seat 10 where the steel ball 11 needs to be riveted faces vertically upward. Place the valve seat 10 on the bottom support plates 7, and use the back limit plate 8 and the side limit plate 9 to position the valve seat 10. The process hole on the valve seat 10 where the steel ball 11 needs to be riveted remains vertically upward. Place the steel ball 11 on the process hole, and the hydraulic cylinder 2 drives the riveting rod 3 to descend to press the steel ball 11, and uses pressure to press the steel ball 11 into the process hole to block the process hole.

[0017] Furthermore, the bottom support plates 7, the back limit plates 8, and the side limit plates 9 are respectively connected to the active bottom plate 6 by bolts, and a number of through holes 12 for the bolts to pass through are provided on the active bottom plate 6. The bottom support plates 7, the back limit plates 8, and the side limit plates 9 are processed accordingly according to the shape of the valve seat 10. The bottom support plates 7, the back limit plates 8, and the side limit plates 9 form limits on the valve seat 10 from three directions, so that the riveting rod 3 can accurately align with the process hole on the valve seat 10 where the steel ball 11 needs to be riveted.

[0018] Furthermore, side plates 13 are respectively fixedly connected to both sides of the base 1. A number of threaded holes 14 are provided on the side plates 13, and a limit screw rod 15 is threadedly connected to the threaded holes 14. A nut 16 is provided at one end of the limit screw rod 15, and the other end passes through the threaded hole 14 and abuts against the active bottom plate 6. By rotating the limit screw rod 15, a passage for the active bottom plate 6 to pass through is formed by the limit screw rods 15 between the side plates 13. In this way, after the active bottom plate 6 passes through the passage, it is blocked by the column 4 and is accurately positioned. When the model of the valve seat 10 changes, it is only necessary to adaptively adjust the limit screw rods 15 on both side baffles.

[0019] Furthermore, an installation groove 17 is provided at one end of the limit screw rod 15 close to the active bottom plate 6, and a ball 18 is rotatably installed in the installation groove 17. The ball 18 is restricted within the installation groove 17. The ball 18 does not affect the pushing of the active bottom plate 6 by the base 1.

[0020] Furthermore, a groove 19 is provided at the lower end of the riveting rod 3. The groove 19 has a limiting effect on the steel ball 11 to ensure that the steel ball 11 does not slip sideways during the riveting process.

[0021] Further, the upper end of the riveting rod 3 is threadedly connected to the output shaft of the pressing cylinder. In this way, the riveting rod 3 can be replaced. The riveting rod 3 is designed specifically according to different models of the steel balls 11 and different models of the valve seat 10. When the valve seat 10 is changed in type, the riveting rod 3 is also changed accordingly.

[0022] It is worth mentioning that technical features such as hydraulic cylinders involved in the patent application of the present utility model should be regarded as prior art. For the specific structures, working principles, possible control methods, and spatial arrangement methods of these technical features, conventional selections in the art can be adopted, and they should not be regarded as the inventive points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0023] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. Valve seat steel ball riveting tooling, characterized in that: It includes a base, a hydraulic cylinder, and a riveting rod. One side of the base is fixedly connected to a column, the column is fixedly connected to a crossbeam, the hydraulic cylinder is fixedly installed on the crossbeam, the output shaft of the hydraulic cylinder is vertically downwardly arranged, the upper end of the riveting rod is detachably connected to the output shaft of the hydraulic cylinder, a movable bottom plate is placed on the base, a plurality of bottom support plates, a plurality of back limit plates and a plurality of side limit plates are detachably connected to the movable bottom plate, the valve seat is placed on the bottom support plate, one side of the valve seat is tightly against the back limit plate, and the other side is tightly against the side limit plate, and the side of the valve seat where the steel ball needs to be riveted is vertically upward.

2. The valve seat steel ball riveting tool as claimed in claim 1, characterized in that: The bottom support plate, the back limiting plate and the side limiting plates are respectively connected to the movable bottom plate by bolts, and the movable bottom plate is provided with a plurality of through holes for the bolts to pass through.

3. The valve seat steel ball riveting tool as claimed in claim 1, characterized in that: The two sides of the base are respectively fixedly connected with side plates, and a plurality of threaded holes are arranged on the side plates. The threaded holes are threadedly connected with limiting screws. A nut is arranged at one end of the limiting screw, and the other end passes through the threaded hole and supports the movable bottom plate.

4. The valve seat steel ball riveting tool as claimed in claim 3, characterized in that: An installation groove is arranged on one end of the limiting screw rod close to the movable bottom plate, and a ball is rotatably installed in the installation groove, and the ball is restricted in the installation groove.

5. The valve seat steel ball riveting tool as claimed in claim 1, characterized in that: The lower end of the riveting rod is provided with a groove.

6. The valve seat steel ball riveting tool as claimed in claim 5, characterized in that: The upper end of the riveting rod is threadedly connected to the output shaft of the pressure cylinder.

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