Rigid plastic check ring size correcting mechanism

Abstract

The utility model discloses a hard plastic check ring size correcting mechanism which is used for reducing the diameter of a hard plastic check ring sleeved at an annular groove of a workpiece A. The workpiece A is provided with a matching part used for being inserted into a workpiece B, the matching part is provided with the annular groove, and the hard plastic check ring is sleeved in the annular groove. Comprising two semicircular cylinders which are hinged together, the two semicircular cylinders are folded together to form a complete cylindrical cylinder, and the inner diameter of the two semicircular cylinders is the same as the outer diameter of a hard plastic check ring; one end of each semicircular cylinder is a hinged end, the other end of each semicircular cylinder is a closed end, the closed ends of the two semicircular cylinders extend in the radial direction to be provided with butt joint plates, and pressing structures are correspondingly arranged on the two butt joint plates. By means of the compressing structure, the two semicircular cylinders can be compressed and folded together to form a complete cylindrical barrel, in the process, the hard plastic check ring sleeved with the semicircular cylinders is compressed and contracted, the hard plastic check ring is forced to restore the original diameter, and therefore the situation that the hard plastic check ring is damaged when the hard plastic check ring and a workpiece B are assembled due to the too large outer diameter is avoided; and poor sealing of the workpiece A and the workpiece B caused by damage of the hard plastic check ring is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a hard plastic retaining ring assembly technology. Background Art

[0002] Hard plastic retaining rings are often used for sealing between two workpieces A and B. Workpiece A is inserted into workpiece B, and a hard plastic retaining ring is set at the circumferential mating surface of the two workpieces AB to play a sealing role. The development of this utility model stems from the practical problems that arise in the outer shell (workpiece B) and the outer end cover (workpiece A) of the high-pressure filter assembled by our company.

[0003] Specifically, an annular groove is usually set on the circumferential surface of workpiece A (outer end cover of the high-pressure filter). During assembly, a hard plastic retaining ring needs to be put on the annular groove of workpiece A, and then the matching part of workpiece A with the hard plastic retaining ring is pressed into the matching groove of workpiece B (outer shell of the high-pressure filter). The hard plastic retaining ring plays a sealing role between workpieces AB.

[0004] Since the annular groove is a concave structure, the outer diameter of the annular groove wall is larger than the outer diameter of the groove bottom. Therefore, when the hard plastic retaining ring is inserted into the annular groove, the hard plastic retaining ring needs to be expanded in diameter so that it can pass through the groove wall of the annular groove and be inserted into the annular groove.

[0005] The diameter of the hard plastic retaining ring expands when it passes through the groove wall of the annular groove, resulting in that when the mating part of workpiece A (with a hard plastic retaining ring) is subsequently pressed into the mating groove of workpiece B, the hard plastic retaining ring may hinder the pressing action due to the expansion of the diameter. If forced into place, the hard plastic retaining ring may be cut or twisted, resulting in a certain probability of sealing failure after the AB workpieces are assembled. Utility Model Content

[0006] The utility model aims to provide a hard plastic retaining ring size correction mechanism, which reduces the outer diameter of the hard plastic retaining ring after the hard plastic retaining ring is sleeved in the annular groove of the A workpiece, thereby avoiding damage to the hard plastic retaining ring during assembly due to the expansion of the diameter, thereby avoiding failure of the seal between the A and B workpieces.

[0007] To achieve the above purpose, the utility model provides a hard plastic retaining ring size correction mechanism, which is used to reduce the diameter of the hard plastic retaining ring sleeved on the annular groove of workpiece A, wherein workpiece A has a matching portion for inserting workpiece B, the matching portion is provided with the annular groove, and the hard plastic retaining ring is sleeved in the annular groove;

[0008] It includes two semi-cylinders hinged together, the two semi-cylinders form a complete cylindrical cylinder when they are closed together, and the inner diameters of the two semi-cylinders are the same as the outer diameter of the hard plastic retaining ring;

[0009] One end of each of the two semi-cylinders is a hinged end and the other end is a closed end. The closed ends of the two semi-cylinders are radially extended with docking plates, and the two docking plates are correspondingly provided with clamping structures.

[0010] The butt joint plates of the two semi-cylinders are respectively a first butt joint plate and a second butt joint plate;

[0011] The specific compression structure is:

[0012] A rotating shaft is inserted into the first docking plate, and the rotating shaft extends in the up-down direction. A first hollow groove is provided in the middle of the first docking plate in the up-down direction, and the rotating shaft passes through the first hollow groove. A shaft sleeve is sleeved on the rotating shaft at the first hollow groove, and the shaft sleeve is connected to a threaded shaft in the radial direction; the outer end of the first hollow groove is open;

[0013] A second hollow groove is provided in the middle of the second docking plate corresponding to the first hollow groove, and the circumferential rotation path of the threaded shaft passes through the second hollow groove; a butterfly nut is connected to the free end of the threaded shaft.

[0014] Semicircular rings for clamping the hard plastic retaining rings are respectively arranged in the two semi-cylinders.

[0015] The utility model has the following advantages:

[0016] Through the clamping structure, the two semi-cylinders can be pressed together to form a complete cylindrical cylinder. In this process, the hard plastic retaining ring sleeved therein is compressed and contracted, forcing the hard plastic retaining ring to restore its original diameter, thereby preventing the hard plastic retaining ring from being damaged when assembled with workpiece B due to its excessive outer diameter, and preventing the hard plastic retaining ring from being damaged, resulting in poor sealing of workpieces A and B.

[0017] When the hard plastic retaining ring is reduced in diameter, the two semi-cylinders are opened and put outside the hard plastic retaining ring, and then the two semi-cylinders are manually closed until they are in contact with the hard plastic retaining ring, and then the threaded shaft is rotated to make the threaded shaft enter the second hollow groove, and then the butterfly nut is tightened to make the two semi-cylinders tightly closed. When tightly closed, the two semi-cylinders produce a tight pressure on the hard plastic retaining ring and force it to shrink to match the inner diameter of the two semi-cylinders, thereby restoring the diameter of the hard plastic retaining ring. The clamping structure is simple to set up and convenient to manufacture and use.

[0018] The semicircular ring is convenient for pressing the hard plastic retaining ring tightly against the groove wall of the annular groove of workpiece A, ensuring that the hard plastic retaining ring is assembled in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model when the two semi-cylinders are opened.

[0020] Figure 2 It is a structural schematic diagram of the utility model with workpiece A installed when two semi-cylinders are closed.

[0021] Figure 3 yes Figure 2 AA section view.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the utility model with workpiece A installed in the two semi-cylinders in a semi-open state.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the utility model with workpiece A installed in the state where two semi-cylinders are closed.

[0024] Figure 6 The utility model is used to press and fit a hard plastic retaining ring into an annular groove of a workpiece A. The utility model is a cross-sectional structural schematic diagram. DETAILED DESCRIPTION

[0025] like Figures 1 to 6 As shown, the hard plastic retaining ring size correction mechanism of the utility model is used to reduce the diameter of the hard plastic retaining ring 3 sleeved on the annular groove 2 of the A workpiece 1, the A workpiece 1 has a matching portion for inserting the B workpiece, the matching portion is provided with the annular groove 2, and the hard plastic retaining ring 3 is sleeved in the annular groove 2;

[0026] The utility model comprises two semi-cylinders 4 hinged together, and the two semi-cylinders 4 form a complete cylindrical cylinder when they are closed together, and the inner diameters of the two semi-cylinders 4 are the same as the outer diameter of the hard plastic retaining ring 3;

[0027] One end of the two semi-cylinders 4 is a hinged end and the other end is a closed end. The closed ends of the two semi-cylinders 4 are radially extended with docking plates, and the two docking plates are correspondingly provided with clamping structures.

[0028] Through the clamping structure, the two semi-cylinders 4 can be pressed together to form a complete cylindrical cylinder. In this process, the hard plastic retaining ring 3 sleeved therein is compressed and contracted, forcing the hard plastic retaining ring 3 to restore its original diameter, thereby preventing the hard plastic retaining ring 3 from being damaged when assembled with the B workpiece due to its outer diameter being too large, and preventing the hard plastic retaining ring 3 from being damaged, resulting in poor sealing of the A workpiece 1 and the B workpiece.

[0029] The butt joint plates of the two semi-cylinders 4 are respectively a first butt joint plate 5 and a second butt joint plate 6;

[0030] The specific compression structure is:

[0031] A rotating shaft 8 is inserted into the first docking plate 5, and the rotating shaft 8 extends in the up-down direction. A first hollow groove 7 is provided in the middle of the first docking plate 5 in the up-down direction. The rotating shaft 8 passes through the first hollow groove 7. A sleeve 9 is sleeved on the rotating shaft 8 at the first hollow groove 7, and a threaded shaft 10 is connected to the sleeve 9 in the radial direction. The outer end of the first hollow groove 7 (referring to the outer end of the semi-cylinder 4 in the radial direction) is open. If the rotating shaft 8 is fixed relative to the first docking plate 5, the sleeve 9 needs to be rotated with the rotating shaft 8. If the rotating shaft 8 is rotated relative to the first docking plate 5, the sleeve 9 can be rotated with the rotating shaft 8, and can also be fixedly connected with the rotating shaft 8.

[0032] A second hollow groove 11 is provided in the middle of the second docking plate 6 corresponding to the first hollow groove 7 , and the circumferential rotation path of the threaded shaft 10 passes through the second hollow groove 11 ; a butterfly nut 12 is connected to the free end of the threaded shaft 10 .

[0033] When the hard plastic retaining ring 3 is reduced in diameter, the two semi-cylinders 4 are opened and put outside the hard plastic retaining ring 3, and then the two semi-cylinders 4 are manually closed until they are in contact with the hard plastic retaining ring 3, and then the threaded shaft 10 is rotated to make the threaded shaft 10 enter the second hollow groove 11. At this time, the butterfly nut 12 is tightened to make the two semi-cylinders 4 tightly closed. When tightly closed, the two semi-cylinders 4 produce a tight pressure on the hard plastic retaining ring 3 and force it to shrink to match the inner diameter of the two semi-cylinders 4, thereby restoring the diameter of the hard plastic retaining ring 3. The clamping structure is simple to set up and convenient to manufacture and use.

[0034] The two semi-cylinders 4 are respectively provided with semi-circular rings 13 for clamping the hard plastic retaining ring 3. The semi-circular rings 13 are convenient for pressing the hard plastic retaining ring 3 against the groove wall of the annular groove 2 of the A workpiece 1, ensuring that the hard plastic retaining ring 3 is assembled in place.

[0035] In this embodiment, workpiece A 1 is the outer end cover of the high-pressure filter, and workpiece B is the outer shell of the high-pressure filter.

[0036] Figure 6 In the figure, the structure indicated by reference numeral 14 is a cylinder, the structure indicated by reference numeral 15 is a downward pressing transmission structure connected to the extending rod of the cylinder, and the structure indicated by reference numeral 16 is a downward pressing plate fixedly connected to the downward pressing transmission structure 15. The downward pressing plate 16 presses the utility model downward, thereby forcing the hard plastic retaining ring 3 to be pressed tightly against the groove wall of the annular groove 2 of the workpiece A 1, ensuring that the hard plastic retaining ring 3 is assembled in place.

[0037] When workpiece A 1 and workpiece B are assembled, the hard plastic retaining ring 3 needs to be initially assembled into the annular groove 2 of workpiece A 1; in the process of entering the annular groove 2, the hard plastic retaining ring 3 is expanded by the groove wall of the annular groove 2. At this time, the two semi-cylinders 4 of the utility model are opened, and then sleeved outside the hard plastic retaining ring 3 and the two hard plastic retaining rings 3 are manually closed. The threaded shaft 10 is rotated to enter the second hollow groove 11 on the second docking plate 6, and then the butterfly nut 12 is manually tightened. The butterfly nut 12 presses the first docking plate 5 and the second docking plate 6 to close, driving the two semi-cylinders 4 to close, and the two semi-cylinders 4 force the hard plastic retaining ring 3 to shrink and return to the original diameter. Even if the diameter of the hard plastic retaining ring 3 rebounds to a certain extent after loosening the butterfly nut 12, opening the two semi-cylinders 4, and removing the utility model, it cannot rebound back to the size when it is expanded by the groove wall of the annular groove 2, thereby significantly reducing the probability of poor sealing after the AB workpieces are assembled, and improving the yield rate after the AB workpieces are assembled.

[0038] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A hard plastic retaining ring size correction mechanism, used to reduce the diameter of a hard plastic retaining ring sleeved on an annular groove of workpiece A, workpiece A having a matching portion for inserting workpiece B, the matching portion being provided with the annular groove, and a hard plastic retaining ring sleeved in the annular groove; characterized in that: It includes two semi-cylinders hinged together, the two semi-cylinders form a complete cylindrical cylinder when they are closed together, and the inner diameters of the two semi-cylinders are the same as the outer diameter of the hard plastic retaining ring; One end of each of the two semi-cylinders is a hinged end and the other end is a closed end. The closed ends of the two semi-cylinders are radially extended with docking plates, and the two docking plates are correspondingly provided with clamping structures.

2. The hard plastic retaining ring size correction mechanism according to claim 1, characterized in that: The butt joint plates of the two semi-cylinders are respectively a first butt joint plate and a second butt joint plate; The specific compression structure is: A rotating shaft is inserted into the first docking plate, and the rotating shaft extends in the up-down direction. A first hollow groove is provided in the middle of the first docking plate in the up-down direction, and the rotating shaft passes through the first hollow groove. A shaft sleeve is sleeved on the rotating shaft at the first hollow groove, and the shaft sleeve is connected to a threaded shaft in the radial direction; the outer end of the first hollow groove is open; A second hollow groove is provided in the middle of the second docking plate corresponding to the first hollow groove, and the circumferential rotation path of the threaded shaft passes through the second hollow groove; a butterfly nut is connected to the free end of the threaded shaft.

3. The hard plastic retaining ring size correction mechanism according to claim 1 or 2, characterized in that: Semicircular rings for clamping the hard plastic retaining rings are respectively arranged in the two semi-cylinders.

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