CN114165671B

CN114165671B - Floating filling sealing mechanism

Info

Publication number: CN114165671B
Application number: CN202111212510.1A
Authority: CN
Inventors: 张和毅
Original assignee: Shanghai Size Automation Equipment Co ltd
Current assignee: Shanghai Size Automation Equipment Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2024-05-03
Anticipated expiration: 2041-10-18
Also published as: CN114165671A

Abstract

The invention discloses a floating filling sealing mechanism, which comprises: base, sealing seat subassembly, bracing piece, swing joint spare and bellows. The sealing seat component is arranged opposite to the base, and a first air passage penetrating through two ends of the sealing seat component is arranged in the sealing seat component. The support rod is connected with the base and is positioned between the base and the sealing seat component. The movable connecting piece is connected with the supporting rod and the sealing seat assembly, and the supporting rod is movably arranged relative to the sealing seat assembly. The corrugated pipe is connected with the base and the sealing seat assembly, and a second air passage which is butted with the first air passage and passes through the base to be communicated with the outside is arranged in the corrugated pipe. One end face of the base is provided with a butt joint sealing area which surrounds the periphery of the corrugated pipe and the supporting rod. The invention can more accurately position the workpiece, and the opening to be sealed on the workpiece can be smoothly sealed, and simultaneously, the gas injection to the workpiece is realized.

Description

Floating filling sealing mechanism

Technical Field

The invention relates to the technical field of sealing, in particular to a floating filling sealing mechanism.

Background

In the prior art, a plurality of workpieces such as motor shells or some boxes need to be of sealing structures in use, the tightness of the motor shells or some boxes needs to be detected in order to ensure the tightness of the motor shells or some boxes, the common practice is to put a workpiece to be detected into a vacuum box, then to block part of openings of the workpiece to be detected, and then to introduce helium into the workpiece, and to detect whether gas leaks in the vacuum box or not to serve as a detection index of the air tightness of the workpiece. In the prior art, because the workpiece has a plurality of positions to be sealed, the mutual positions have tolerance, one end of the workpiece is positioned by adopting the prior sealing device and then the opening of the workpiece is blocked, the over-positioning condition of the plurality of positions usually occurs, the positioning is inaccurate, and the sealing head cannot smoothly enter the hole. In addition, the existing sealing device can only realize sealing, helium is injected into a workpiece to be detected for airtight detection, other components are needed to pass through, and an air injection port is needed to be found on the workpiece to be detected, so that the structure is complex, and the operation is complex.

Disclosure of Invention

The invention aims to provide a floating filling sealing mechanism, which can more accurately position a workpiece, can smoothly seal an opening needing to be sealed on the workpiece, and can realize gas injection on the workpiece.

To solve the above technical problems, embodiments of the present invention provide a floating filling sealing mechanism, including:

A base;

The sealing seat assembly is arranged opposite to the base; a first air passage penetrating through two ends of the sealing seat assembly is formed in the sealing seat assembly;

the support rod is connected with the base and is positioned between the base and the sealing seat assembly;

the movable connecting piece is connected with the supporting rod and the sealing seat assembly, and the supporting rod is movably arranged relative to the sealing seat assembly; and

A bellows connecting the base and the seal seat assembly; a second air passage which is butted with the first air passage and passes through the base to be communicated with the outside is arranged in the corrugated pipe;

one end face of the base is provided with a butt joint sealing area which surrounds the corrugated pipe and the periphery of the supporting rod.

In contrast to the prior art, embodiments of the present invention have the butt seal against the vacuum box wall, with the base, seal seat assembly, moveable connector entering the vacuum box, the support rod and bellows partially entering the vacuum box. The movable connecting piece is movably connected with the supporting rod and the sealing seat assembly, so that the distance between the base and the inlet to be plugged of the workpiece can be finely adjusted, the sealing seat assembly can smoothly enter the workpiece, and the workpiece can be accurately positioned and accurately sealed. Meanwhile, as the movable connecting piece can adjust the distance between the supporting rod and the sealing seat assembly, the flexible corrugated pipe is used for connecting the base and the sealing seat assembly, the first air passage in the sealing seat assembly is communicated with the second air passage in the corrugated pipe, and the flexible corrugated pipe is externally connected with the air charging device and is used for charging detection gas into a workpiece. The supporting rod is connected with the base and the sealing seat assembly and is used for supporting and fixing the floating filling sealing mechanism to enable the whole floating filling sealing mechanism to have a fixed shape, so that a workpiece can be stably plugged. In addition, the bellows can also prevent the filled gas from leaking from the second gas path into the vacuum box. Therefore, the mechanism can accurately seal the workpiece, and meanwhile, the mechanism can be used for injecting detection gas into the workpiece, so that other auxiliary mechanisms are not needed, the structure is simple, and the use is convenient.

In one embodiment, the movable connecting piece is a bolt with equal height and is connected with the supporting rod and the sealing seat assembly;

The sealing seat assembly is provided with a bolt hole for penetrating the equal-height bolt, the diameter of the bolt hole is larger than that of the equal-height bolt, and the height of the bolt hole is smaller than that of a bolt body of the equal-height bolt.

In one embodiment, the support rods are multiple and surround the corrugated pipe; the equal-height bolts are multiple, are the same as the supporting rods in number and are arranged in a one-to-one correspondence mode.

In one embodiment, the base is provided with an inner cavity with an opening at one end, and the supporting rod is connected with the bottom of the inner cavity and extends out of the inner cavity; the corrugated pipe is connected with the cavity bottom of the inner cavity;

Wherein, the butt joint sealing area surrounds the opening periphery of the inner cavity.

In one embodiment, the seal holder assembly comprises:

the cylinder barrel is connected with the supporting rod through the movable connecting piece;

a piston movably penetrating the cylinder along an extending direction of the support rod; the piston is internally provided with the first air passage extending along the axial direction of the piston;

The sealing seat body is connected with one side of the cylinder barrel, which is away from the base; the piston penetrates through the sealing seat body, and the piston is slidably connected with the sealing seat body;

the end cover is positioned at one side of the sealing seat body, which is away from the cylinder barrel, and is fixedly connected with the piston; the free end of the end cap extends radially to form a flange spaced from the seal housing; and

A seal ring is circumferentially disposed between the flange and the seal housing, and is operable to be compressed and radially expanded by the flange and the seal housing.

In one embodiment, the piston is in sealing sliding with the sealing seat and the cylinder;

The cylinder barrel is provided with an air inlet; an air cavity is formed between the piston and one end of the cylinder barrel, which faces the end cover, and the air cavity is communicated with the air inlet.

In one embodiment, the cylinder barrel is provided with a cylinder body connected with the sealing seat body and a supporting plate connected with the cylinder body in a sealing way; the piston penetrates through the supporting plate, and the movable connecting piece is connected with the supporting rod through the supporting plate.

In one embodiment, the bellows is provided with an air pipe in butt joint with the piston, and the second air passage is arranged in the air pipe; and the air pipe penetrates through the base and extends out of the base.

In one embodiment, the air tube interfaces with the piston via a tubing connection.

In an embodiment, the base, the bellows, and the seal holder assembly are all coaxially disposed.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is an isometric view of a floating charge seal mechanism according to one embodiment of the present invention;

FIG. 2 is a cross-sectional view of a floating charge seal mechanism according to one embodiment of the present invention;

FIG. 3 is a sectional view of a floating charge seal mechanism according to one embodiment of the present invention in use.

Reference numerals:

1. a base; 11. a butt-joint sealing area; 12. an inner cavity; 21. a first air path passage; 22. a cylinder; 221. an air inlet; 222. an air cavity; 223. a cylinder; 224. a support plate; 23. a piston; 231. a flange; 24. sealing the seat body; 25. an end cap; 26. a seal ring; 3. a support rod; 4. a movable connecting piece; 5. a bellows; 51. a second air path channel; 52. an air pipe; 53. a pipe joint; 6. a vacuum box; 7. a workpiece.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. The claimed application may be practiced without these specific details and with various changes and modifications based on the following embodiments.

In the following description, for the purposes of explanation of various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and variations such as "comprises" and "comprising" will be understood to be open-ended, meaning of inclusion, i.e. to be interpreted to mean "including, but not limited to.

The following detailed description of various embodiments of the present invention will be provided in connection with the accompanying drawings to provide a clearer understanding of the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present invention, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.

Embodiments of the present invention are described below with reference to the accompanying drawings.

As shown in fig. 1,2 and 3, a floating filling seal mechanism according to an embodiment of the present invention includes: base 1, sealing seat subassembly, bracing piece 3, swing joint 4 and bellows 5. The sealing seat assembly is arranged opposite to the base 1, and a first air passage 21 penetrating through two ends of the sealing seat assembly is arranged in the sealing seat assembly. The supporting rod 3 is connected with the base 1 and is positioned between the base 1 and the sealing seat component. The movable connecting piece 4 is connected with the supporting rod 3 and the sealing seat component, and the supporting rod 3 is movably arranged relative to the sealing seat component. And the corrugated pipe 5 is connected with the base 1 and the sealing seat assembly, and a second air passage 51 which is butted with the first air passage 21 and communicated to the outside through the base 1 is arranged in the corrugated pipe 5. Wherein, one end face of the base 1 is provided with a butt joint sealing area 11 which surrounds the corrugated pipe 5 and the supporting rod 3.

In use, the workpiece 7 (only partially shown) is placed in the vacuum box 6 (only partially shown), the butt seal 11 is abutted against the wall of the vacuum box 6, and the base 1, seal holder assembly, articulating member 4, and support rod 3 and bellows 5 are partially received in the vacuum box 6. And the movable connecting piece 4 is movably connected with the supporting rod 3 and the sealing seat component, when the sealing seat component is plugged into an inlet to be plugged into the workpiece 7, the movable connecting piece 4 is movably connected with the sealing seat component, the effect that the sealing component can float at the inlet to be plugged into the workpiece 7 is achieved, the distance between the base 1 and the inlet to be plugged into the workpiece 7 can be finely adjusted, the sealing seat component can smoothly enter the workpiece 7, and then the workpiece 7 can be accurately positioned and accurately sealed. Meanwhile, the distance between the support rod 3 and the sealing seat assembly can be adjusted by the movable connecting piece 4, so that the flexible corrugated pipe 5 is used for connecting the base 1 and the sealing seat assembly, the first air passage 21 in the sealing seat assembly is communicated with the second air passage 51 in the corrugated pipe 5, and an external inflation device is used for inflating the workpiece 7. The supporting rod 3 is connected with the base 1 and the sealing seat assembly and is used for supporting and fixing the floating filling sealing mechanism to enable the whole floating filling sealing mechanism to have a fixed shape so as to stably seal the workpiece 7. The bellows 5 also prevents the leakage of the charged gas from the second gas circuit into the vacuum box 6. Thereby but through this mechanism accurate sealed work piece 7, accessible this mechanism simultaneously can be to the injection detect gas in the work piece 7, need not other auxiliary mechanism, simple structure, and convenient to use. After the workpiece 7 is sealed by the floating filling sealing mechanism, helium can be filled into the workpiece 7 through the second gas path channel and the first gas path channel, if the tightness of the workpiece 7 is poor, the gas filled into the workpiece 7 can leak into the vacuum box 6, and a helium detector connected to the vacuum box 6 can detect the condition of the helium in the vacuum box 6.

Further, as shown in fig. 2 and 3, the movable connecting piece 4 is a bolt with equal height, and is connected with the supporting rod 3 and the sealing seat assembly. The bolt hole that is used for the equal altitude bolt to run through has been seted up on the seal seat subassembly, and the diameter of bolt hole is greater than the diameter of equal altitude bolt, and the bolt body height of bolt hole highly is less than equal altitude bolt. The bolt holes arranged on the sealing seat component are larger than the diameter of the equal-height bolt, the equal-height bolt can penetrate through the bolt holes, the height of the bolt holes is smaller than that of the equal-height bolt body, the equal-height bolt can move in the bolt holes along the axial direction of the equal-height bolt body, so in the mode, the distance between the support rod 3 connected by the equal-height bolt and the sealing seat component can be adjusted, and then the distance between the base 1 and the sealing seat component is adjusted, namely fine adjustment is carried out according to the distance between the base 1 and the workpiece 7 to be plugged. It should be understood that the movable connecting piece 4 of the present invention is not limited to the use of the contour bolt, but may be a flexible piece connecting the supporting rod 3 and the seal seat assembly, and only needs to connect the supporting rod 3 and the seal seat assembly and enable the supporting rod 3 to be movably disposed relative to the seal seat assembly.

Further, as shown in fig. 1,2 and 3, the support rod 3 has four and surrounds the bellows 5. The equal-height bolts are four and are arranged in one-to-one correspondence with the support rods 3. It should be understood that the support rod 3 and the bolts with equal height are not limited to four, but may be one, two, three or more than four, and those skilled in the art may perform the arrangement according to actual needs.

In addition, as shown in fig. 2 and 3, the base 1 has an inner cavity 12 with one end opened, and the support rod 3 is connected to the bottom of the inner cavity 12 and extends out of the inner cavity 12. The bellows 5 is connected to the bottom of the inner chamber 12. Wherein the butt seal area 11 surrounds the opening of the inner cavity 12. By providing the base 1 in the form of an inner cavity 12 with one end open, not only the weight of the base 1 can be reduced, but also raw materials and further costs can be saved, and in addition, the support rod 3 and the corrugated tube 5 can be conveniently installed. Alternatively, the base 1 may be provided without the inner cavity 12, and may be provided according to actual needs by those skilled in the art without departing from the scope of the present invention.

In addition, as shown in fig. 2 and 3, the seal holder assembly includes: the cylinder 22, the piston 23, the sealing seat 24, the end cover 25 and the sealing ring 26. The cylinder 22 is connected with the support rod 3 through the movable connecting piece 4. The piston 23 movably penetrates the cylinder 22 in the extending direction of the support rod 3, and a first air passage 21 extending in the axial direction of the piston 23 is formed in the piston 23. The sealing seat 24 is connected with one side of the cylinder 22 away from the base 1; and the piston 23 penetrates through the sealing seat 24, and the piston 23 is slidably connected with the sealing seat 24. An end cap 25 is located on the side of the seal housing 24 facing away from the cylinder 22 and is fixedly connected to the piston 23, and the free end of the end cap 25 extends radially to form a flange 231 spaced from the seal housing 24. The seal ring 26 is circumferentially disposed between the flange 231 and the seal housing 24, and the seal ring 26 is operatively compressed and radially expanded by the flange 231 and the seal housing 24. When in use, the sealing seat assembly is inserted into the opening of the workpiece 7, then the piston 23 moves along the axial direction deviating from the end cover 25, the end cover 25 fixedly connected with the piston 23 is also driven to move along the axial direction deviating from the free end of the end cover, and then the sealing ring 26 arranged between the flange 231 of the end cover 25 and the sealing seat body 24 is extruded and radially expanded, and the sealing ring 26 abuts against the inner wall of the opening of the workpiece 7, so that the sealing of the workpiece 7 is realized. In addition, through this kind of form, can be according to the size of work piece 7 open-ended and then change sealing seat body 24, end cover 25 and the sealing washer 26 of different specifications to cooperate the opening of equidimension not to seal it, need not to make whole floating filling sealing mechanism again, practice thrift the cost, the person skilled in the art can set up according to actual need.

Preferably, as shown in fig. 2 and 3, the piston 23 slides in sealing relation with the sealing seat 24 and the cylinder 22. The cylinder 22 is provided with an air inlet 221, an air outlet cavity 222 is formed between the piston 23 and one end of the cylinder 22 facing the end cover 25, and the air outlet cavity 222 is communicated with the air inlet 221. During the use, insert the opening of work piece 7 with the seal receptacle subassembly, then at air inlet 221 external gas injection device, then gas is followed air inlet 221 and is got into and walk air cavity 222, walk air cavity 222's pressure and increase, then piston 23 is pushed by gas and is moved along the axial direction who deviates from end cover 25, and the end cover 25 of piston 23 fixed connection is also driven along being deviate from its free end's axial direction motion, and then set up the sealing washer 26 between end cover 25 flange 231 and seal receptacle 24 and be extruded and radial expansion, sealing washer 26 and work piece 7 open-ended inner wall butt, thereby realize the seal to work piece 7. It should be appreciated that the manner in which the piston 23 is moved is not limited to providing a near-term delicious and air-going cavity 222, and in other embodiments, the piston 23 may be moved by other structures, such as providing the air-going cavity 222 as an oil cavity, or by electrically moving the piston 23, as may be desired by one skilled in the art without departing from the scope of the present invention.

As shown in fig. 2 and 3, the cylinder 22 includes a cylinder body 223 connected to the seal housing 24, and a support plate 224 sealingly connected to the cylinder body 223. The piston 23 penetrates through the supporting plate 224, and the movable connecting piece 4 is connected with the supporting rod 3 through the supporting plate 224. Through this kind of setting, can be convenient with the swing joint piece 4 with backup pad 224 with bracing piece 3 be connected and then with cylinder 22 with bracing piece 3 be connected, can comparatively conveniently pack into in the cylinder 22 with piston 23 simultaneously, simplify the course of working. It should be understood that the cylinder 22 may be integrally formed, and those skilled in the art may be configured as desired without departing from the scope of the invention.

Further, as shown in fig. 2 and 3, the bellows 5 has an air tube 52 in butt joint with the piston 23, the second air channel 51 is opened in the air tube 52, and the air tube 52 extends out of the base 1 through the base 1. Set up trachea 52 in bellows 5, trachea 52 can be realized more easily with piston 23 connection, can also adapt the trachea 52 of different bore according to different aerating device in addition, and the outside cover of trachea 52 is equipped with bellows 5 and also can prevent that the gas of trachea 52 from revealing to in the vacuum chamber 6 to make the gas tightness detection to work piece 7 more accurate, and bellows 5's setting also further forms the support to the seal seat subassembly, lets the seal seat subassembly connect more stably. The bellows 5 may be provided without the air tube 52, and may be provided as needed by a person skilled in the art without departing from the scope of the present invention.

Preferably, as shown in fig. 2 and 3, the air tube 52 interfaces with the piston 23 via a tubing connection 53. With this arrangement, the air tube 52 can be conveniently docked with the piston 23, and the air tube 52 can be conveniently replaced when it is damaged. Furthermore, the air tube 52 may be connected to the piston 23 by welding, for example, without departing from the scope of the present invention, and may be provided as desired by those skilled in the art.

In addition, the base 1, the corrugated tube 5 and the sealing seat assembly are all coaxially arranged. By the coaxial arrangement, the floating filling sealing mechanism has higher stability. It will be appreciated that the base 1, bellows 5, seal holder assembly may be arranged differently, e.g. slightly off-axis, without departing from the scope of the invention. While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A floating fill seal mechanism, comprising:

A base;

One end face of the base is provided with a butt joint sealing area which surrounds the periphery of the corrugated pipe and the supporting rod;

Placing a workpiece in a vacuum box, abutting the butt seal area against a wall of the vacuum box, wherein the base, the seal seat assembly, the movable connecting piece enter the vacuum box, and the support rods and the corrugated pipe partially enter the vacuum box; the movable connecting piece is a bolt with the same height and is connected with the supporting rod and the sealing seat assembly;

The sealing seat assembly is provided with a bolt hole for the penetration of the equal-height bolt, the diameter of the bolt hole is larger than that of the equal-height bolt, and the height of the bolt hole is smaller than that of a bolt body of the equal-height bolt;

The seal holder assembly includes:

2. The floating fill seal mechanism of claim 1 wherein said support rod is a plurality and surrounds said bellows; the equal-height bolts are multiple, are the same as the supporting rods in number and are arranged in a one-to-one correspondence mode.

3. The floating fill seal mechanism of claim 1 wherein said base has an interior cavity open at one end, said support rod being connected to the bottom of said interior cavity and extending beyond said interior cavity; the corrugated pipe is connected with the cavity bottom of the inner cavity;

4. The floating charge seal mechanism of claim 1 wherein said piston is sealingly slidable with said seal housing and said cylinder;

5. The floating fill seal mechanism of claim 1 wherein said cylinder has a barrel connected to said seal housing, a support plate sealingly connected to said barrel; the piston penetrates through the supporting plate, and the movable connecting piece is connected with the supporting rod through the supporting plate.

6. The floating fill seal mechanism of claim 5 wherein said bellows has an air tube therein which interfaces with said piston, said second air passage opening in said air tube; and the air pipe penetrates through the base and extends out of the base.

7. The floating charge seal mechanism of claim 6 wherein said air tube interfaces with said piston through a tubing connection.

8. The floating fill seal mechanism of claim 1 wherein said base, said bellows, said seal seat assembly are all coaxially disposed.