Fixture for grinding and fixing medium and large valve plates

Abstract

The utility model discloses a fixture for grinding and fixing medium and large size valve plates, the inside of a shell is of a hollow structure, a top plate of the shell is provided with through grooves communicated with the inside, the through grooves are circumferentially distributed, the top plate at the lower ends of the through grooves which are circumferentially distributed is provided with a sliding groove, a spiral disc comprises a placing disc and a spiral groove, and the placing disc is provided with a clamping groove. First gears are circumferentially arranged on the containing disc, the spiral groove is fixedly formed in the containing disc, the spiral disc is rotationally installed on a bottom plate of the shell through the containing disc, sliding blocks are arranged at the upper ends of the air cylinders, the air cylinders which are circumferentially arranged are installed in the sliding grooves in a sliding mode through the sliding blocks, and the lower ends of the air cylinders are placed in the spiral groove. The automatic centering, clamping and loosening device for the valve plate has the advantages that automatic centering, automatic clamping and automatic loosening of the valve plate are achieved, working efficiency is improved, and the requirement for large-scale continuous production is met.

Description

Technical Field

[0001] The utility model relates to the technical field of valve production, in particular to the technical field of a clamp for grinding and fixing a medium-to-large valve plate. Background Art

[0002] When grinding the valve plates of medium and large valves, the valve plates need to be fixed on the workbench first. At present, when positioning and fixing the medium and large valve plates, they are usually fixed manually at each clamping point, and then opened manually at each clamping point after the processing is completed. This method has low working efficiency and cannot meet the needs of large-scale continuous production. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a medium-to-large valve plate grinding and fixing fixture, which can realize automatic centering, automatic clamping and automatic loosening of the valve plate, improve work efficiency and meet the needs of large-scale continuous production.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A fixture for grinding and fixing medium and large valve plates, comprises a shell, a spiral disk, a cylinder and a motor, the interior of the shell is a hollow structure, a through groove connected to the interior is opened on the top plate of the shell, the through groove is distributed in a circumferential manner, and a slide groove is arranged on the top plate at the lower end of the through groove distributed in a circumferential manner, the spiral disk comprises a placement disk and a spiral groove, the placement disk is circumferentially provided with a first gear, the spiral groove is fixedly installed on the placement disk, the spiral disk is rotatably installed on the bottom plate of the shell through the placement disk, a slider is arranged on the upper end of the cylinder, the circumferentially arranged cylinders are slidably installed in the slide groove through the slider, and the lower end of the cylinder is placed in the spiral groove and contacts with the spiral groove, the telescopic rod of the cylinder is hingedly installed with a pressure plate through the through groove, the lower end of the side wall of the shell is provided with an arc through groove, the motor is fixedly installed on the side wall of the shell and is located above the arc through groove, a second gear is fixedly installed on the output shaft of the motor, and the motor is transmission connected with the first gear of the spiral disk through the second gear.

[0006] Preferably, a limit strip is provided on the slide groove.

[0007] Preferably, a fork claw is provided at the front end of the pressing plate.

[0008] Preferably, a circular arc-shaped protrusion is provided at the rear end of the pressing plate.

[0009] The beneficial effects that can be achieved by the utility model using the above technical solution are:

[0010] 1. The cylinder is installed in the slide groove by sliding through the slider, and the lower end of the cylinder is placed in the spiral groove and contacts with the spiral groove. The telescopic rod of the cylinder passes through the through groove and is hingedly installed with a pressure plate. When the spiral disk rotates under the action of the motor, the spiral groove on the spiral disk will push the cylinder to slide in the slide groove, and the telescopic rod of the cylinder tightens or loosens the pressure plate, thereby realizing automatic centering, automatic clamping, and automatic loosening of the valve plate.

[0011] 2. By arranging fork claws at the front end of the pressure plate, the pressure plate has more contact points with the valve plate, making the valve plate more stable and improving the processing quality.

[0012] 3. By arranging an arc-shaped protrusion at the rear end of the pressing plate, it is prevented that the sharp corner of the tail of the pressing plate scratches the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal axonometric structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the spiral disk structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the cylinder and the pressure plate in the utility model;

[0018] Figure 6 This is a schematic diagram of the internal structure of the housing of the utility model;

[0019] Figure 7 for Figure 6 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] 1. Shell; 2. Through groove; 3. Slide groove; 4. Spiral disk; 5. Placement disk; 6. First gear; 7. Spiral groove; 8. Cylinder; 9. Slider; 10. Press plate; 11. Circular arc through groove; 12. Motor; 13. Second gear; 14. Limiting strip; 15. Fork claw; 16. Bump. DETAILED DESCRIPTION

[0021] Example reference Figure 1-7As shown, the utility model provides a fixture for grinding and fixing medium and large valve plates, including a shell 1, a spiral disk 4, a cylinder 8 and a motor 12. The interior of the shell 1 is a hollow structure. A through groove 2 connected to the interior is opened on the top plate of the shell 1. The through groove 2 is distributed in a circle. A slide groove 3 is arranged on the top plate at the lower end of the through groove 2 distributed in a circle. A limit strip 14 is arranged on the slide groove 3. The spiral disk 4 includes a placement disk 5 and a spiral groove 7. A first gear 6 is arranged in a circle on the placement disk 5. The spiral groove 7 is fixedly installed on the placement disk 5. The spiral disk 4 is rotatably installed on the bottom plate of the shell 1 through the placement disk 5. A slider 9 is arranged on the upper end of the cylinder 8. The cylinder 8 distributed in a circle is slidably installed in the slide groove 3 through the slider 9, and the lower end of the cylinder 8 is placed in the spiral groove 7 and contacts with the spiral groove 7. The telescopic rod of the cylinder 8 passes through the through groove 2 and is hingedly installed with a pressure Plate 10, a fork claw 15 is provided at the front end of the pressure plate 10, so that the pressure plate 10 has more contact points with the valve plate, making the valve plate more stable and improving the processing quality. An arc-shaped protrusion 16 is provided at the rear end of the pressure plate 10 to prevent the sharp corners of the tail of the pressure plate 10 from scratching the shell 1. An arc groove 11 is provided at the lower end of the side wall of the shell 1. The motor 12 is fixedly mounted on the side wall of the shell 1 and is located above the arc groove 11. A second gear 13 is fixedly mounted on the output shaft of the motor 12. The motor 12 is transmission-connected to the first gear 6 of the spiral disk 4 via the second gear 13. When the spiral disk 4 rotates under the action of the motor 12, the spiral groove 7 on the spiral disk 4 will push the cylinder 8 to slide in the slide groove 3, and the telescopic rod of the cylinder 8 presses or releases the pressure plate 10, thereby realizing automatic centering, automatic clamping and automatic release of the valve plate, improving work efficiency and meeting the needs of large-scale continuous production.

Claims

1. A fixture for grinding and fixing medium and large valve plates, characterized in that: The invention comprises a housing (1), a spiral disk (4), a cylinder (8) and an electric motor (12); the interior of the housing (1) is a hollow structure; a through groove (2) communicating with the interior is provided on the top plate of the housing (1); the through groove (2) is distributed in a circumferential manner; a slide groove (3) is provided on the top plate at the lower end of the through groove (2) distributed in a circumferential manner; the spiral disk (4) comprises a placement disk (5) and a spiral groove (7); a first gear (6) is provided in a circumferential manner on the placement disk (5); the spiral groove (7) is fixedly mounted on the placement disk (5); the spiral disk (4) is rotatably mounted on the bottom plate of the housing (1) via the placement disk (5); a The slide block (9) is provided, and the cylinder (8) is slidably mounted in the slide groove (3) via the slide block (9), and the lower end of the cylinder (8) is placed in the spiral groove (7) and contacts the spiral groove (7). The telescopic rod of the cylinder (8) passes through the through groove (2) and is hingedly mounted with a pressure plate (10). The lower end of the side wall of the housing (1) is provided with an arc through groove (11). The motor (12) is fixedly mounted on the side wall of the housing (1) and is located above the arc through groove (11). A second gear (13) is fixedly mounted on the output shaft of the motor (12). The motor (12) is transmission-connected to the first gear (6) of the spiral disk (4) via the second gear (13).

2. A medium-to-large valve plate grinding and fixing fixture according to claim 1, characterized in that: A limit strip (14) is provided on the slide groove (3).

3. A medium-to-large valve plate grinding and fixing fixture according to claim 1 or 2, characterized in that: A fork claw (15) is provided at the front end of the pressing plate (10).

4. A medium-to-large valve plate grinding and fixing fixture according to claim 3, characterized in that: A circular arc-shaped protrusion (16) is provided at the rear end of the pressing plate (10).

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