CN115560073A - Upper and lower formula sealing mechanism that fits together - Google Patents

Abstract

The invention discloses an up-down combined sealing mechanism, which comprises an upper sealing component and a lower sealing component which are oppositely arranged up and down, wherein the upper sealing component comprises: the upper sealing mounting plate is provided with a yielding through groove penetrating through the upper surface and the lower surface of the upper sealing mounting plate so as to enable the upper sealing mounting plate to be in an annular structure; the upper sealing framework and the upper sealing ring are embedded in the lower surface of the upper sealing mounting plate and arranged around the edge of the abdicating through groove; the lower seal assembly includes: a lower seal mounting plate having a central portion formed thereon proximate the central region and lateral locating grooves disposed around the central portion; a plurality of lateral positioning assemblies disposed in the lateral positioning slots. According to the invention, the sealing success rate and the sealing effect are improved, and the subsequent air tightness detection operation is favorably and smoothly carried out.

Description

Upper and lower formula sealing mechanism that fits together

Technical Field

The invention relates to the field of nonstandard automation, in particular to an up-and-down combined sealing mechanism.

Background

In the process of detecting air tightness in the non-standard automation field, it is known to adopt sealing mechanisms with different structural forms to realize the sealing of the surface of a workpiece. During the research and realization of the sealing process of the workpiece surface, researchers find that the sealing mechanism in the prior art has at least the following problems:

the structure is complicated, the steps of feeding, positioning, sealing and air tightness detection of the workpiece are complicated, the complicated operation steps easily cause poor sealing effect or sealing success rate on the surface of the workpiece, and finally the air tightness detection efficiency is reduced.

In view of the above, it is necessary to develop a top-bottom matching sealing mechanism to solve the above problems.

Disclosure of Invention

In order to overcome the problems of the sealing mechanism, the invention aims to provide an up-and-down combined sealing mechanism which can simplify the steps of feeding, positioning, sealing and detecting, improve the success rate and the sealing effect of sealing and facilitate the smooth operation of subsequent air tightness detection.

In terms of the vertical mating seal mechanism, the vertical mating seal mechanism according to the present invention for solving the above technical problem includes an upper seal assembly and a lower seal assembly which are disposed opposite to each other in a vertical direction, and the upper seal assembly includes:

the upper sealing mounting plate is provided with a yielding through groove penetrating through the upper surface and the lower surface of the upper sealing mounting plate so as to enable the upper sealing mounting plate to be in an annular structure; and

the upper sealing framework and the upper sealing ring are embedded in the lower surface of the upper sealing mounting plate and are arranged around the edge of the abdicating through groove;

the lower seal assembly includes:

a lower seal mounting plate having a central portion formed thereon proximate the central region and lateral locating grooves disposed around the central portion;

a plurality of lateral positioning assemblies arranged in the lateral positioning slots, the lateral positioning assemblies arranged to be made up of at least two lateral positioning subsets, each lateral positioning subset including a pair of oppositely disposed lateral positioning assemblies, a respective pair of lateral positioning assemblies in each lateral positioning subset being disposed opposite one another;

at least three positioning nozzles arranged in the central portion; and

a first sealing ring arranged at an edge of the central portion and surrounding the positioning spout therein;

when the workpiece is placed in the area surrounded by the lateral positioning assembly, the workpiece is positioned to a preset position under the lateral positioning effect of the lateral positioning assembly, then the positioning suction nozzle conducts suction positioning on the lower surface of the workpiece, the first sealing ring forms sealing on the lower surface of the workpiece, and then the upper sealing assembly is pressed down on the workpiece, so that the upper sealing ring seals the periphery of the upper surface of the workpiece. The lower pressure provided by the upper sealing assembly can further improve the sealing performance of the first sealing ring on the lower surface of the workpiece.

Optionally, the lower surface of the upper seal mounting plate is provided with a ring around the upper seal mounting groove arranged at the edge of the yielding through groove, the upper seal framework is detachably mounted in the upper seal mounting groove, the upper seal ring covers the upper seal framework and is concentrically arranged with the upper seal framework so that the upper seal ring is arranged in the upper seal mounting groove, and the upper seal ring is located between the upper seal framework and the upper seal mounting plate. When the upper sealing ring is worn or needs to be replaced according to the sealing ring matched with the upper sealing ring, the upper sealing framework can be detached from the upper sealing installation groove, and the original upper sealing ring is detached from the upper sealing framework and then replaced with a new upper sealing ring.

Optionally, the upper surface of last sealed skeleton is arranged with three at least spliced poles that set up around its through-hole, go up sealed skeleton pass through the spliced pole realize with the connection dismantled of last sealed mounting panel, wherein, work as go up the sealing washer cover in when on the last sealed skeleton, the corresponding part cover of going up the sealing washer is located on the spliced pole.

Optionally, a connecting through hole extending along the axial direction of the connecting column is formed in the connecting column, and the detachable connection with the upper sealing mounting plate is realized by matching and connecting a connecting part in the connecting through hole.

Optionally, the upper surface inside of last sealed skeleton is formed with the direction tangent plane of arranging around its through-hole, go up the sealing washer and include from outer to interior consecutive linkage segment, changeover portion, the section of dangling and sealing section, wherein, work as it covers to go up the sealing washer when going up on the sealed skeleton, the linkage segment cover is located on the spliced pole, the changeover portion with the direction tangent plane is laminated mutually. The transition section can enable the overhanging section to make tangential transition, on one hand, premature damage caused by stress concentration at the joint between the overhanging section and the connecting section can be prevented in long-time sealing operation, and on the other hand, the overhanging section can be clamped by the upper sealing framework and the upper sealing mounting plate more tightly.

Optionally, the overhanging section overhangs downwards from the bottom of the transition section, and the sealing section extends radially from the inner side of the bottom of the overhanging section to the inner side of the through hole of the upper sealing framework, so that the lower surface of the sealing section is lower than the lower surface of the upper sealing framework. Therefore, when the upper sealing framework is pressed down for sealing, the upper sealing framework can not contact with the sealing surface.

Optionally, the lateral positioning assembly comprises:

the side limit barrier strip is fixedly arranged in the lateral positioning groove, and a positioning through hole penetrating through the upper surface and the lower surface of the lateral positioning groove is formed in the side limit barrier strip;

the positioning stop block is arranged in the positioning through hole in a sliding manner along the vertical direction; and

a positioning reset component elastically supported on the lower surface of the positioning block;

the side surface of the positioning through hole is provided with a lateral positioning groove communicated with the positioning through hole, so that when the positioning stop block is arranged in the lateral positioning groove, at least the corresponding side surface of the positioning stop block is exposed outwards from the lateral positioning groove and protrudes out of the corresponding side surface of the positioning stop block.

Optionally, the positioning stopper includes:

the positioning main body is connected in the positioning through hole in a sliding manner;

the blocking part is integrally formed on the side surface of the positioning main body and is exposed outwards through the lateral positioning groove; and

the limiting part is fixedly connected to the bottom of the positioning main body and extends outwards horizontally along the X-axis direction;

wherein, the X axial width of side direction constant head tank is less than the X axial width of location main part, and the X axial width of location main part is greater than the X axial width of side direction constant head tank to make the location main part can not pass through side direction constant head tank lateral displacement.

Optionally, a guiding curved surface smoothly transiting to the inner side of the positioning through hole is formed at the top of the blocking portion, so that the thickness of the guiding curved surface in the Y-axis direction is gradually expanded in the direction from top to bottom. Therefore, in the positioning process, the guide curved surface can perform self-adaptive positioning on the workpiece within the set size range, and the positioning convenience is improved.

Optionally, the top of the positioning body at least partially protrudes upwards to form a limiting part.

One of the above technical solutions has the following advantages or beneficial effects: the sealing success rate and the sealing effect are improved, and the subsequent air tightness detection operation is favorably and smoothly carried out.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting thereof, wherein:

fig. 1 is a perspective view of a top-bottom mating seal mechanism according to an embodiment of the present invention;

fig. 2 is a longitudinal sectional view of a top-bottom interfitting sealing mechanism in accordance with one embodiment of the present invention;

FIG. 3 is an exploded view of an upper seal assembly of a top-bottom conformable sealing mechanism according to one embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of an upper seal assembly of a conformable upper and lower seal mechanism according to one embodiment of the present disclosure;

fig. 5 is a longitudinal sectional view of an upper seal framework and an upper seal ring of the upper and lower mating seal mechanism according to an embodiment of the present invention;

fig. 6 is a perspective view of a lower seal carrier according to an embodiment of the present invention;

fig. 7 is a top view of a lower seal carrier according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view taken along the line E-E in FIG. 7;

fig. 9 is a perspective view of a lateral positioning assembly in the lower seal carrier according to one embodiment of the present invention;

FIG. 10 is a front view of a lateral positioning assembly in a lower seal carrier according to one embodiment of the present invention;

fig. 11 is an exploded view of a lateral positioning assembly in a lower sealing carrier according to an embodiment of the present invention;

fig. 12 is a combined schematic view of a plurality of lateral positioning assemblies used in combination to laterally position a workpiece according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims of the present application does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

Example 1

Fig. 1 to 4 show embodiment 1 of the present invention, and in combination with the illustration of fig. 1 to 2, it can be seen that the upper and lower congruent sealing mechanism 62 includes an upper sealing assembly and a lower sealing assembly which are arranged in an up-down opposite manner, and the upper sealing assembly includes:

an upper sealing mounting plate 621, wherein an abdicating through-groove 6211 is formed through the upper and lower surfaces of the upper sealing mounting plate 621 so that the upper sealing mounting plate 621 has an annular structure; and

an upper sealing framework 623 and an upper sealing ring 622 which are embedded in the lower surface of the upper sealing mounting plate 621 and arranged around the edge of the abdicating through groove 6211;

the lower seal assembly includes:

a lower sealing mounting plate 624 having a central portion 6241 formed thereon proximate the central region and lateral positioning slots 6242 disposed about the central portion 6241;

a plurality of lateral positioning assemblies 66 arranged in said lateral positioning slots 6242, said lateral positioning assemblies 66 being arranged so as to be made up of at least two lateral positioning subsets, each lateral positioning subset comprising a pair of oppositely disposed lateral positioning assemblies 66, a respective pair of lateral positioning assemblies 66 in each lateral positioning subset being disposed opposite one another;

at least three positioning nozzles 627 arranged in said central portion 6241; and

a first gasket 628 arranged at the edge of said central portion 6241 and enclosing said positioning nozzle 627 therein;

when a workpiece is placed in the area surrounded by the lateral positioning assembly 66, the workpiece is positioned to a preset position under the lateral positioning action of the lateral positioning assembly 66, then the positioning suction nozzle 627 performs suction positioning on the lower surface of the workpiece, the first sealing ring 628 forms a seal on the lower surface of the workpiece, and then the upper sealing assembly is pressed down on the workpiece, so that the upper sealing ring 622 performs sealing on the periphery of the upper surface of the workpiece. The downward pressure provided by the upper seal assembly can further improve the sealing of the first seal ring 628 against the lower surface of the workpiece.

Referring to fig. 3 and 4, the lower surface of the upper sealing mounting plate 621 is provided with an upper sealing mounting groove 6212 surrounding the edge of the yielding through groove 6211, the upper sealing skeleton 623 is detachably mounted in the upper sealing mounting groove 6212, the upper sealing ring 622 cover on the upper sealing skeleton 623 and concentrically set up with the upper sealing skeleton 623 so that the upper sealing ring 622 is in the upper sealing mounting groove 6212, the upper sealing ring 622 is located the upper sealing skeleton 623 and the upper sealing mounting plate 621 therebetween. When the upper sealing ring 622 is worn or the sealing ring matched with the upper sealing ring 622 needs to be replaced, the upper sealing framework 623 can be detached from the upper sealing installation groove 6212, and the original upper sealing ring 622 can be detached from the upper sealing framework 623 and then replaced with a new upper sealing ring 622.

As a further improvement, at least three connecting columns 6231 are disposed on the upper surface of the upper sealing framework 623, the connecting columns 6231 are disposed around the upper sealing framework 623, the upper sealing framework 623 is detachably connected to the upper sealing mounting plate 621 through the connecting columns 6231, and when the upper sealing ring 622 covers the upper sealing framework 623, a corresponding portion of the upper sealing ring 622 is sleeved on the connecting columns 6231.

As a further modification, a connecting through hole 6233 is formed in the connecting column 6231 so as to extend in the axial direction thereof, and the detachable connection with the upper sealing mounting plate 621 is achieved by fitting a connecting member in the connecting through hole 6233.

As a further improvement, a guiding tangent plane 6232 arranged around a through hole is formed on the inner side of the upper surface of the upper sealing framework 623, the upper sealing ring 622 comprises a connecting section 6221, a transition section 6223, a suspension section 6222 and a sealing section 6224 which are connected in sequence from outside to inside, wherein when the upper sealing ring 622 covers the upper sealing framework 623, the connecting section 6221 is sleeved on the connecting column 6231, and the transition section 6223 is attached to the guiding tangent plane 6232.

The transition segment 6223 enables the overhanging segment 6222 to make a tangential transition, which can prevent premature failure of the joint between the overhanging segment 6222 and the connecting segment 6221 due to stress concentration during a long sealing operation, and can be clamped by the upper sealing skeleton 623 and the upper sealing mounting plate 621 more tightly to increase the contact area.

As a further improvement, the depending section 6222 depends downwardly from the bottom of the transition section 6223, and the sealing section 6224 extends radially inwardly from the bottom of the depending section 6222 toward the through hole of the upper sealing backbone 623 such that the lower surface of the sealing section 6224 is lower than the lower surface of the upper sealing backbone 623.

So that the upper seal case 623 does not contact the seal face at the time of press-down sealing.

As a further improvement, the guide tangent plane 6232 forms an included angle α with the vertical direction, and the angle of the included angle α is 30 ° to 60 °.

As a further improvement, at least three lower guide posts 6212 are fixed to the lower surface of the upper sealing mounting plate 621 and arranged around the upper sealing frame 623 and the upper sealing ring 622.

As a further improvement, said upper sealing armature 623 is at least partially made of a rigid and/or stiff material. This enables upper seal skeleton 623 to provide stable support for upper seal ring 622.

As a further improvement, the upper seal ring 622 is at least partially made of a soft and/or pliable material. This allows the upper seal ring 622 to be adapted to deform according to the local dimensions of the sealing surface when applied to the sealing surface, thereby providing better sealing.

Optionally, a lower blocking region 6281 corresponding to the workpiece opening is formed on the first sealing ring 628, and an air-tightness detecting air passage 6243 leading to the top of the lower blocking region 6281 is formed in the lower sealing installation plate 624.

Optionally, a vacuum-pumping air path 6244 is formed in the lower sealing mounting plate 624 to the positioning suction nozzle 627.

Referring to fig. 9-12, the lateral positioning assembly 66 includes:

a side limit barrier 661 fixedly disposed in the lateral positioning slot 6242, on which a positioning through hole 662 penetrating through the upper and lower surfaces thereof is formed;

a positioning stopper 663 slidably provided in the positioning through-hole 662 in the vertical direction; and

a positioning return member 664 elastically supported on a lower surface of the positioning stopper 663;

the side surface of the positioning through hole 662 is opened with a lateral positioning slot 6621 communicated therewith, so that when the positioning block 663 is mounted in the lateral positioning slot 6621, at least the corresponding side surface of the positioning block 663 is exposed outwards from the lateral positioning slot 6621 and protrudes out of the corresponding side surface of the positioning block 663.

Further, the positioning stopper 663 includes:

a positioning main body 6631 slidably connected in the positioning through hole 662;

a blocking portion 6633 integrally formed at a side surface of the positioning main body 6631, the blocking portion 6633 being exposed to the outside through the lateral positioning groove 6621; and

a limiting portion 6632 fixedly connected to the bottom of the positioning main body 6631 and horizontally extending outwards along the X-axis direction;

the X axial width of the lateral positioning groove 6621 is smaller than the X axial width of the positioning main body 6631, and the X axial width of the positioning main body 6631 is larger than the X axial width of the lateral positioning groove 6621, so that the positioning main body 6631 cannot laterally displace through the lateral positioning groove 6621.

Optionally, a guiding curved surface 6633 'that smoothly transitions to the inner side of the positioning through hole 662 is formed at the top of the blocking portion 6633, so that the thickness of the guiding curved surface 6633' in the Y-axis direction is gradually expanded in the direction from top to bottom. Therefore, in the positioning process, the guide curved surface 6633' can perform self-adaptive positioning on the workpiece within the set size range, and the positioning convenience is improved.

Further, the top of the positioning body 6631 protrudes at least partially upward to form a stopper 6634.

Further, at least two protruding ridges 6635 extending longitudinally are formed on the positioning main body 6631 on the side opposite to the lateral positioning groove 6621. So that the frictional force between the positioning body 6631 and the positioning through-hole 662 can be reduced.

Further, be formed with on the spacing blend stop 661 of side and be located space 6622 of stepping down under locating hole 662, space 6622 of stepping down's X axle direction size is greater than locating hole 662X axle direction size. The space 6622 is used to provide a space for the limiting portion 6632 when the positioning and resetting component 664 is retracted.

Further, a second sealing ring 625 is disposed on the lower sealing mounting plate 624 and surrounds the lateral positioning assembly 66.

Further, the blocking portion 6633 is at least partially made of a soft and/or pliable material. To prevent damage to the workpiece after collision therewith.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

The features of the different implementations described herein may be combined to form other embodiments not specifically set forth above. The components may be omitted from the structures described herein without adversely affecting their operation. Further, various individual components may be combined into one or more individual components to perform the functions described herein.

Furthermore, while embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in a variety of fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a formula sealing mechanism that agrees with from top to bottom which includes relative upper seal subassembly and the lower seal subassembly that sets up, upper seal subassembly includes:

the upper sealing mounting plate (621) is provided with a yielding through groove (6211) penetrating through the upper surface and the lower surface of the upper sealing mounting plate so that the upper sealing mounting plate (621) is in an annular structure; and

an upper sealing framework (623) and an upper sealing ring (622) which are embedded in the lower surface of the upper sealing mounting plate (621) and arranged around the edge of the abdicating through groove (6211);

the lower seal assembly includes:

a lower sealing mounting plate (624) having a central portion (6241) formed thereon proximate the central region and lateral positioning slots (6242) disposed about the central portion (6241);

a plurality of lateral positioning assemblies (66) arranged in said lateral positioning slots (6242), said lateral positioning assemblies (66) being arranged so as to be made up of at least two lateral positioning subsets, each lateral positioning subset comprising a pair of oppositely disposed lateral positioning assemblies (66), a respective pair of lateral positioning assemblies (66) in each lateral positioning subset being disposed opposite one another;

at least three positioning nozzles (627) arranged in the central portion (6241); and

a first sealing ring (628) arranged at the edge of said central portion (6241) and surrounding said positioning nozzle (627) therein;

when a workpiece is placed in an area surrounded by the lateral positioning assembly (66), the workpiece is positioned to a preset position under the lateral positioning action of the lateral positioning assembly (66), then the positioning suction nozzle (627) performs suction positioning on the lower surface of the workpiece, the first sealing ring (628) forms a seal on the lower surface of the workpiece, and then the upper sealing assembly is pressed downwards on the workpiece, so that the upper sealing ring (622) seals the periphery of the upper surface of the workpiece.

2. The vertical sealing mechanism according to claim 1, wherein an upper sealing mounting groove (6212) arranged around the edge of the abdicating through groove (6211) is formed in the lower surface of the upper sealing mounting plate (621), the upper sealing skeleton (623) is detachably mounted in the upper sealing mounting groove (6212), the upper sealing ring (622) covers the upper sealing skeleton (623) and is concentrically arranged with the upper sealing skeleton (623) so that the upper sealing ring (622) is located between the upper sealing skeleton (623) and the upper sealing mounting plate (621) when the upper sealing ring (622) is in the upper sealing mounting groove (6212).

3. The up-down combined sealing mechanism according to claim 2, wherein the upper surface of the upper sealing skeleton (623) is provided with at least three connecting columns (6231) arranged around the through hole thereof, the upper sealing skeleton (623) is detachably connected with the upper sealing mounting plate (621) through the connecting columns (6231), and when the upper sealing ring (622) covers the upper sealing skeleton (623), the corresponding part of the upper sealing ring (622) is sleeved on the connecting columns (6231).

4. A positive-down sealing mechanism according to claim 3, wherein the connecting column (6231) is formed with a connecting through hole (6233) extending in the axial direction thereof, and the detachable connection with the upper sealing mounting plate (621) is achieved by fitting a connecting member in the connecting through hole (6233).

5. The vertical sealing mechanism as claimed in claim 3, wherein a guiding tangent plane (6232) is formed around the through hole of the upper sealing frame (623), and the upper sealing ring (622) comprises a connecting section (6221), a transition section (6223), a suspension section (6222) and a sealing section (6224) which are connected in sequence from outside to inside, wherein when the upper sealing ring (622) covers the upper sealing frame (623), the connecting section (6221) is sleeved on the connecting column (6231), and the transition section (6223) is fitted with the guiding tangent plane (6232).

6. The interfitting seal mechanism according to claim 5, wherein said depending section (6222) depends downwardly from the bottom of said transition section (6223), and said sealing section (6224) extends radially from inside the bottom of said depending section (6222) to inside the through-hole of said upper sealing backbone (623) such that the lower surface of said sealing section (6224) is lower than the lower surface of said upper sealing backbone (623).

7. The top-bottom conformable seal mechanism of claim 1, wherein the lateral positioning assembly (66) comprises:

a side limit barrier strip (661) fixedly arranged in the lateral positioning groove (6242), and a positioning through hole (662) penetrating through the upper surface and the lower surface of the lateral positioning groove is formed on the side limit barrier strip;

a positioning stopper (663) slidably provided in the positioning through-hole (662) in the vertical direction; and

a positioning return member (664) elastically supported on the lower surface of the positioning stopper (663);

the side surface of the positioning through hole (662) is provided with a lateral positioning groove (6621) communicated with the positioning through hole, so that when the positioning stop block (663) is arranged in the lateral positioning groove (6621), at least the corresponding side surface of the positioning stop block (663) is exposed outwards from the lateral positioning groove (6621) and protrudes out of the corresponding side surface of the positioning stop block (663).

8. The top-bottom compatible sealing mechanism according to claim 7, wherein the positioning stopper (663) comprises:

a positioning main body (6631) slidably connected to the positioning through hole (662);

a blocking part (6633) integrally formed at a side surface of the positioning main body (6631), wherein the blocking part (6633) is exposed outwards through the lateral positioning groove (6621); and

a limiting part (6632) which is fixedly connected to the bottom of the positioning main body (6631) and extends outwards horizontally along the X-axis direction;

the X axial width of the lateral positioning groove (6621) is smaller than that of the positioning main body (6631), and the X axial width of the positioning main body (6631) is larger than that of the lateral positioning groove (6621), so that the positioning main body (6631) cannot laterally displace through the lateral positioning groove (6621).

9. The vertical sealing mechanism according to claim 8, wherein a guide curved surface (6633 ') smoothly rounded toward an inner side of the positioning through hole (662) is formed at a top of the blocking portion (6633) such that a thickness of the guide curved surface (6633') in the Y-axis direction is gradually increased in a top-to-bottom direction.

10. The above-and-below sealing mechanism according to claim 8, wherein the top of the positioning body (6631) is at least partially protruded upward to form a stopper portion (6634).

Images