Sealing element, sealing component and air tightness detection device

Abstract

A sealing element, a sealing member and an air tightness detection device, the sealing element can elastically deform, the sealing element comprises a second sealing part and a first sealing part, the size of the second sealing part in the radial direction of the sealing element is gradually reduced along the axial direction of the sealing element, the first sealing part is connected with the second sealing part, and the first sealing part is connected with the second sealing part. The first sealing part comprises a first protruding peak and a second protruding peak, the first sealing part is arranged on the side, with the relatively small size, of the second sealing part in the radial direction of the sealing part, the first sealing part protrudes in the axial direction of the sealing part, and the first protruding peak and the second protruding peak are arranged in the radial direction of the sealing part. The sealing stability of the sealing piece is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing, in particular to a sealing element, a sealing member and a gas tightness detection device. BACKGROUND

[0002] The sealing element has a great influence on the sealing performance of the sealed container. In the prior art, the shape of the sealing element is a simple O-ring shape, which is difficult to fit the sealing groove of the container well, thereby leading to unstable sealing effect. In particular, in the gas tightness detection device, on the one hand, a large pressure needs to be filled after the mold is closed, and on the other hand, the sealing ring may move with the upper mold after the upper mold is lifted, which leads to the sealing ring being unable to be stably installed in the installation groove and being easily detached. Therefore, the current sealing effect of the sealing element is unstable, which easily affects the test results. SUMMARY

[0003] Therefore, the present application provides a sealing element, which helps to improve the sealing effect.

[0004] The present application provides a sealing element, which can be elastically deformed. The sealing element comprises a first sealing part and a second sealing part. Along the axial direction of the sealing element, the first sealing part and the second sealing part are connected. Along the direction of the first sealing part close to the second sealing part, the size of the first sealing part in the radial direction of the sealing element gradually decreases. The side of the second sealing part away from the first sealing part comprises a first protruding peak and a second protruding peak. Along the radial direction of the sealing element, the first protruding peak and the second protruding peak are arranged at intervals. The first protruding peak and the second protruding peak extend along the circumferential direction of the sealing element.

[0005] The first sealing part provided by the present application comprises a first protruding peak and a second protruding peak. The first protruding peak and the second protruding peak can respectively abut against the matched parts, thereby respectively achieving the sealing effect. Any one of the first protruding peak and the second protruding peak can take effect, i.e., the sealing function can be achieved. Therefore, the sealing element provided by the present application has good reliability. In addition, the bottom width of the second sealing part is greater than the top width, thereby reducing the possibility of the second sealing part being detached from the first installation groove in the thickness direction of the sealing element, reducing the risk of the sealing element being lifted and detached when the first mold group and the second mold group are separated, and improving the stability of the installation of the sealing element.

[0006] In a possible implementation, along the direction of the second sealing part close to the first sealing part, the size of the second sealing part in the radial direction of the sealing element gradually decreases. The second sealing part comprises a first recessed part. The first recessed part is located at the connection between the first sealing part and the second sealing part. The first recessed part is recessed along the radial direction of the sealing element.

[0007] In a possible implementation, the first protruding peak and the second protruding peak have a second recess therebetween, the second recess being recessed along an axial direction of the sealing member.

[0008] In a possible implementation, the second sealing portion includes two first recesses, the two first recesses being located at an inner side and an outer side of the sealing member respectively, and a stepped surface being located at a side of the second sealing portion connected with the first sealing portion, the stepped surface being connected with the first recesses along a radial direction of the sealing member.

[0009] In a possible implementation, the first protruding peak and the second protruding peak have a first arc surface away from an end of the second sealing portion.

[0010] In a possible implementation, the sealing member has a density of 7*10 -7 kg / mm 3 ~ 8*10 -7 kg / mm 3 , a Young's modulus of 6 MPa ~ 8 MPa, and a Poisson's ratio of 0.3 ~ 0.5.

[0011] The application provides a sealing member, which includes a first piece, a second piece and a sealing member, the sealing member being the sealing member in any of the above embodiments, the first piece and the second piece being capable of being buckled to each other, the first piece having a first clamping groove, the second piece having a second clamping groove, and at least part of the first sealing portion being tightly fitted in the first clamping groove, the second sealing portion being capable of abutting against an inner wall of the second clamping groove when the first piece and the second piece are matched.

[0012] In a possible implementation, the first clamping groove gradually decreases in width along a direction close to the second piece, the width of the first clamping groove being smaller than the width of the second clamping groove, and at least the first protruding peak and the second protruding peak abutting against a groove bottom of the second clamping groove when the first piece and the second piece are matched, the first protruding peak and the second protruding peak being compressed and deformed.

[0013] The application provides a gas tightness detection device, which includes a first module, a second module and a sealing member, the sealing member being the sealing member in any of the above embodiments, the first module and the second module being capable of being buckled to each other to form a sealed cavity, the first module having a first mounting groove at a side close to the second module, the second module having a second mounting groove at a side close to the first module, and the second sealing portion being mounted in the second mounting groove, the first sealing portion being capable of extending into the first mounting groove and abutting against a top wall and a side wall of the first mounting groove respectively when the first module and the second module are buckled, so as to seal the sealed cavity.

[0014] In a possible implementation, the width of the second installation slot gradually decreases in a direction close to the first module, and the width of the first installation slot is smaller than the width of the second installation slot. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0016] Figure 1 A result schematic diagram of a gas tightness detection device provided by the embodiments of the present application;

[0017] Figure 2 A sectional view of cooperation of a blocking strip and a locking block provided by the embodiments of the present application;

[0018] Figure 3 A structure schematic diagram of cooperation of a first module and a second module provided by the embodiments of the present application;

[0019] Figure 4 A partial schematic diagram of the first module; Figure 3

[0020] Figure 5 A structure schematic diagram of an installation plate provided by the embodiments of the present application;

[0021] Figure 6 A sectional view of cooperation of the first module and the second module provided by the embodiments of the present application;

[0022] Figure 7 A partial schematic diagram of the second module; Figure 6

[0023] A schematic diagram of deformation of a sealing member provided by the embodiments of the present application; Figure 8

[0024] A sectional view of a sealing member provided by the embodiments of the present application; Figure 9

[0025] A structure schematic diagram of a sealing member provided by the embodiments of the present application. Figure 10 1-First module;

[0026] 11-Blocking strip;

[0027] 111-Connecting part;

[0028] 112-Abutting part;

[0029] ​​

[0030] 113 - first locking surface; 12 - first mounting groove; 2 - second module;

[0031] 21 - locking block;

[0032] 211 - second locking surface; 22 - driving member;

[0033] 23 - slide rail;

[0034] 24 - slide plate;

[0035] 25 - connecting plate;

[0036] 26 - second mounting groove; 3 - bottom plate;

[0037] 31 - slide groove;

[0038] 4 - guide column;

[0039] 5 - support plate;

[0040] 6 - pressing cylinder;

[0041] 7 - mounting plate;

[0042] 71 - guide hole;

[0043] 72 - avoiding hole;

[0044] 8 - sealing member;

[0045] 81 - first sealing part;

[0046] 812 - second arc surface;

[0047] 82 - second sealing part;

[0048] 821 - first convex peak;

[0049] 822 - second convex peak;

[0050] 823 - first arc surface;

[0051] 83 - first concave part;

[0052] 84 - second concave part;

[0053] 85 - stepped surface;

[0054] X - length direction;

[0055] Y - width direction;

[0056] Z - height direction. DETAILED DESCRIPTION

[0057] In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0058] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0059] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0060] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0061] As shown in Figure 1 The present application provides a gas tightness detection device, which comprises a first module 1, a second module 2 and a lower pressing cylinder 6. The lower pressing cylinder 6 is connected with the second module 2 to make the first module 1 and the second module 2 mutually buckled, for realizing dry cavity gas tightness detection. Specifically, the workpiece to be detected can be placed between the first module 1 and the second module 2, and after the first module 1 and the second module 2 are buckled and pressed, it is checked whether there is gas leakage in the dry cavity. At least one of the first module 1 and the second module 2 is provided with a mounting groove, so that the first detection module and the second detection module can set the workpiece to be detected in the mounting groove after buckling.

[0062] The first module 1 is provided with at least two blocking strips 11, which are respectively located on both sides of the first module 1 along the length direction X of the gas tightness detection device, and the blocking strip 11 comprises a connecting part 111, and the connecting part 111 has a first locking surface 113. At least two locking blocks 21 and driving members 22 are arranged on the side of the second module 2 away from the first module 1, and the locking blocks 21 and the blocking strips 11 are correspondingly arranged. The locking block 21 can cooperate with the blocking strip 11 to realize the buckling and locking of the first module 1 and the second module 2, so the number and position of the locking blocks 21 correspond to the blocking strips 11. The plurality of blocking strips 11 can be symmetrically arranged on both sides of the first module 1, and the locking blocks 21 are correspondingly arranged on both sides of the second module 2. The locking blocks 21 and the blocking strips 11 at different positions cooperate to realize the self-locking function, thereby improving the stability during locking.

[0063] The locking block 21 is installed on the second mold module 2 and is driven by the driving member 22 to move along the length direction X of the air tightness detection device. The driving member 22 can be a cylinder or a motor, as long as it can drive the locking block 21 to cooperate with the blocking strip 11, and is not limited specifically herein.

[0064] As shown in Figure 2 the side of the locking block 21 away from the second mold module 2 includes a second locking surface 211, the first locking surface 113 is inclined relative to the movement direction of the locking block 21, the second locking surface 211 is parallel to the first locking surface 113, and the driving member 22 is used to drive the locking block 21 to move so that the first locking surface 113 and the second locking surface 211 abut, and the first locking surface 113 and the second locking surface 211 can be self-locked to lock and position the first mold module 1 and the second mold module 2. The first locking surface 113 can be arranged on the side of the abutting portion 112 close to the locking block 21, so as to facilitate the abutment of the first locking surface 113 and the second locking surface 211.

[0065] As shown in Figures 2 to 4 in the embodiment, the first mold module 1 and the second mold module 2 are self-locked by the blocking strip 11 and the locking block 21. Specifically, the second mold module 2 is driven by the cylinder to move along the height direction Z of the air tightness detection device, so that the first mold module 1 and the second mold module 2 are buckled. The driving member 22 further drives the locking block 21 to move, so that the first locking surface 113 and the second locking surface 211 abut each other, thereby realizing the locking of the first mold module 1 and the second mold module 2, and then the cylinder 6 can be released and no longer apply force to the second mold module 2. According to the principle of friction self-locking, when the direction of the driving force action line is within the friction angle of the object, no matter how large the driving force is, it cannot counteract the friction force acting on the mechanism, and the mechanism cannot move, that is, the driving force does not do work, thereby achieving the purpose of self-locking. The embodiment realizes self-locking through the first locking surface 113 and the second locking surface 211. In the prior art, the air tightness detection device adopts a locking mode in which the cylinder continuously provides a downward pressure. Because the cylinder pressure fluctuates and cannot maintain a stable value, the accuracy of the test results is affected, and this mode generates a large reaction force on the upper mold, which requires a very high structural strength of the air tightness detection device, resulting in increased cost. The embodiment realizes the fixation of the first mold module 1 and the second mold module 2 through the inclined surface self-locking mode. After locking, the cylinder 6 does not need to continuously apply force, has good stability, and the force during locking is concentrated on the blocking strip 11 and the locking block 21, so the strength requirement of other parts of the air tightness detection device is low, and the cost can be reduced.

[0066] As shown in Figure 4As shown, in one possible implementation, the baffle 11 includes a connecting portion 111, which is mounted on the side wall of the first module 1 and extends in a direction close to the second module 2. An abutting portion 112 is located at one end of the connecting portion 111 close to the second module 2, and a first locking surface 113 is located on the side of the abutting portion 112 close to the second module 2.

[0067] The connecting part 111 is used to connect and support the abutment part 112. One end of the connecting part 111 is connected to the first module 1, and the other end of the connecting part 111 is connected to the abutment part 112. By setting the connecting part 111 to an appropriate shape, the abutment part 112 can be installed in a preset position to facilitate the engagement of the abutment part 112 and the locking block 21. The connecting part 111 protrudes relative to the first module 1 along the height direction Z of the airtightness testing device. When the first module 1 and the second module 2 are fastened together, the connecting part 111 can protrude relative to the top of the second module 2 along the height direction Z of the airtightness testing device. The abutting part 112 is located at the position where the connecting part 111 protrudes relative to the second module 2. The locking block 21 can be located on the side of the second module 2 away from the first module 1, that is, the locking block 21 can be located on the top of the second module 2. Therefore, the locking block 21 and the abutting part 112 cooperate with each other to make the first locking surface 113 and the second locking surface 211 abut together, thereby realizing the fastening and locking of the first module 1 and the second module 2.

[0068] like Figure 4 As shown, in one possible implementation, the baffle 11 is annular, and the two ends of the abutment portion 112 are respectively provided with connecting portions 111, and at least a portion of the locking block 21 can pass through the baffle 11.

[0069] The stop bar 11 may include multiple connecting portions 111, which are respectively disposed at both ends of the abutment portion 112. The connecting portions 111 connected to both ends of the abutment portion 112 can be further connected to each other through the connecting portions 111, thereby forming a ring shape with the stop bar 11 and improving the mechanical strength of the stop bar 11. After the first module 1 and the second module 2 are engaged, the driving member 22 drives the locking block 21. A portion of the locking block 21 can extend into the interior of the stop bar 11, and the first locking surface 113 and the second locking surface 211 abut against each other, thereby achieving self-locking.

[0070] like Figure 4As shown, in one possible implementation, the second module 2 has a slide rail 23 and a slide plate 24 on the side away from the first module 1. The slide rail 23 has a guide groove, the slide plate 24 is installed in the guide groove, and the locking block 21 is installed on the slide plate 24. The slide rail 23 can be respectively arranged on both sides of the slide plate 24, so that the slide rail 23 provides support from both sides of the slide plate 24, improving the stability of the slide plate 24 when sliding. The locking block 21 can be fixedly installed on the slide plate 24, or the locking block 21 can be integrally formed with the slide plate 24. The locking block 21 can slide with the slide plate 24, so that the locking block 21 approaches the stop strip 11 and cooperates with the stop strip 11, or moves away from the stop strip 11 and releases the cooperation between the locking block 21 and the stop strip 11.

[0071] like Figure 1 As shown, in one possible implementation, the airtightness testing device includes a base plate 3 and a guide post 4. The base plate 3 is located at the bottom of the second module 2 along the height direction Z. The guide post 4 connects the base plate 3 and the second module 2. The second module 2 can slide along the guide post 4. The first module 1 is mounted on the base plate 3.

[0072] The base plate 3 provides support for the entire airtightness testing device. The first module 1 can be mounted on the base plate 3, and the second module 2 is slidably connected to the guide post 4. A pressing cylinder 6 can be positioned on top of the guide post 4. The pressing cylinder 6 drives the second module 2 to move along the guide post 4, and the second module 2 can move along the guide post 4 in the height direction Z of the airtightness testing device to move closer to or further away from the first module 1. In this embodiment, the first module 1 and the second module 2 are self-locking via a first inclined plane and a second inclined plane. Therefore, the strength requirement for the guide post 4 is lower, allowing for a reduction in the size of the guide post 4 and lowering the cost of the airtightness testing device.

[0073] like Figure 1 and Figure 4As shown in the possible implementation, the second module 2 is provided with a mounting plate 7 on the side away from the first module 1, part of the mounting plate 7 extends along the length direction X and protrudes relative to the side wall of the second module 2, the protruding part is provided with an avoiding hole 72, the blocking strip 11 can pass through the avoiding hole 72. When the first module 1 and the second module 2 are buckled, the blocking strip 11 can pass through the avoiding hole 72 and protrude relative to the mounting plate 7, the locking block 21 can pass through the part of the blocking strip 11 protruding relative to the mounting plate 7, the first locking surface 113 and the second locking surface 211 are abutted by the cooperation of the locking block 21 and the abutting part 112, the locking of the first module 1 and the second module 2 is realized. The part of the locking block 21 passing through the blocking strip 11 can abut against the mounting plate 7 along the height direction Z of the air tightness detection device, the mounting plate 7 can support the locking block 21, thereby improving the stability during locking. In the embodiment, the first module 1 and the second module 2 are self-locked by the first inclined surface and the second inclined surface, so the strength requirement of the mounting plate 7 is lower, the thickness of the mounting plate 7 can be reduced, and the cost of the air tightness detection device is reduced.

[0074] As shown in the possible implementation, Figure 3 As shown in the possible implementation, part of the mounting plate 7 extends along the width direction Y of the air tightness detection device and protrudes relative to the side wall of the second module 2, the protruding part is provided with a guide hole 71, and the guide hole 71 is sleeved with the guide column 4. The mounting plate 7 is slidingly connected with the guide column 4 through the guide hole 71, and the guide hole 71 can guide the movement of the guide plate. The same side of the mounting plate 7 along the width direction Y of the air tightness detection device can be provided with a plurality of guide holes 71, so that the mounting plate 7 can be sleeved and matched with a plurality of guide columns 4 at the same time, thereby improving the stability of the mounting plate 7 during movement. Because the mounting plate 7 is connected with the second module 2, the mounting plate 7 can drive the second module 2 to move synchronously during movement.

[0075] As shown in the possible implementation, Figure 1 As shown in the possible implementation, the bottom plate 3 is provided with a sliding groove 31, and the first module 1 can move along the sliding groove 31. The sliding groove 31 can extend along the length direction X or the width direction Y of the air tightness detection device, so that the first module 1 can move along the sliding groove 31 to a position which does not coincide with the second module 2 in the projection in the height direction Z of the air tightness detection device, so that the second module 2 does not block the first module 1, and the workpiece to be tested can be placed in the first module 1. The first module 1 can load the workpiece to be tested and move to the bottom of the second module 2, and the second module 2 further moves along the height direction Z of the air tightness detection device, gradually approaches the first module 1 and buckles with the first module 1.

[0076] As shown in the possible implementation, Figure 1As shown in a possible implementation, the air tightness detection device includes a support plate 5 located on the side of the second mold module 2 away from the first mold module 1, the support plate 5 is connected with the guide column 4, the support plate 5 is located on the end of the guide column 4 away from the bottom plate 3, one end of the guide column 4 is connected with the bottom plate 3, and the other end of the guide column 4 is connected with the support plate 5, which can improve the stability of the guide column 4. The pressing cylinder 6 can be arranged on the side of the support plate 5 away from the second mold module 2, and the support plate 5 can be preformed with an opening, so that the push rod of the pressing cylinder 6 can pass through the opening and be connected with the second mold module 2.

[0077] As shown in a possible implementation, Figure 4 As shown in a possible implementation, the driving member 22 and the locking block 21 are arranged along the width direction Y, the second mold module 2 is provided with a connecting plate 25 connected with the driving member 22 and the locking block 21, and the driving member 22 can drive the locking block 21 to move along the length direction X. In order to leave a moving space for the locking block 21 on the top of the second mold module 2, the arrangement direction of the driving member 22 and the locking block 21 is perpendicular to the moving direction of the locking block 21, which can reduce the space occupied by the locking block 21 and the driving member 22 in the length direction X of the air tightness detection device, and make full use of the space in the width direction Y of the air tightness detection device. Especially when the locking blocks 21 are arranged on both sides of the second mold module 2, the arrangement can reasonably utilize the space and reduce the size of the air tightness detection device in the length direction X, which is conducive to reducing the overall volume of the air tightness detection device. The locking block 21 can be arranged at the middle position of the top of the second mold module 2 in the width direction Y of the air tightness detection device, and the driving members 22 for driving the two locking blocks 21 can be arranged at intervals along the width direction Y of the air tightness detection device, or the two driving members 22 can be arranged on the same side of the locking block 21 along the width direction Y of the air tightness detection device.

[0078] As shown in a possible implementation, Figure 6 and Figure 7 As shown in a possible implementation, the air tightness detection device includes a first mold module 1, a second mold module 2 and a sealing member 8, the first mold module 1 and the second mold module 2 can be buckled to form a sealed cavity, the side of the first mold module 1 close to the second mold module 2 is provided with a first mounting groove 12, and the side of the second mold module 2 close to the first mold module 1 is provided with a second mounting groove 26. The sealing member includes a first sealing part 81 and a second sealing part 82, the first sealing part 81 is mounted in the second mounting groove 26, and when the first mold module 1 and the second mold module 2 are buckled, the second sealing part 82 can extend into the first mounting groove 12 and abut against the top wall and the side wall of the first mounting groove 12 respectively, so as to seal the sealed cavity.

[0079] As shown in a possible implementation, Figure 8As shown, in a possible implementation, the width of the second installation groove 26 gradually decreases in the direction close to the first mold set 1. The width of the second installation groove 26 refers to the dimension of the second installation groove 26 in the radial direction of the sealing element 8. The shape of the second installation groove 26 is adapted to the shape of the first sealing part 81, which can reduce the possibility of the sealing element 8 being separated from the second installation groove 26 when the first mold set 1 and the second mold set 2 are opened or closed, and improve the stability of the installation of the sealing element 8.

[0080] As shown, the sealing element 8 can elastically deform, and the sealing element 8 includes the first sealing part 81 and the second sealing part 82. Figure 9 As shown, the sealing element 8 can elastically deform, and the sealing element 8 includes the first sealing part 81 and the second sealing part 82.

[0081] As shown, the second sealing part 82 is connected to the first sealing part 81, and the second sealing part 82 includes the first protruding peak 821 and the second protruding peak 822. The second sealing part 82 is arranged on the side of the first sealing part 81 with a relatively small dimension in the radial direction of the sealing element 8, and the second sealing part 82 protrudes in the axial direction of the sealing element 8. The first protruding peak 821 and the second protruding peak 822 are arranged in the radial direction of the sealing element 8. Figure 9 The dimension of the first sealing part 81 in the radial direction of the sealing element 8 gradually decreases, and the side of the second sealing part 82 away from the first sealing part 81 includes the first protruding peak 821 and the second protruding peak 822. In the radial direction of the sealing element 8, the first protruding peak 821 and the second protruding peak 822 are arranged at intervals, and the first protruding peak 821 and the second protruding peak 822 extend in the circumferential direction of the sealing element 8.

[0082] The second sealing part 82 is used to abut other devices to achieve a sealing effect.

[0083]

[0084] ​The sealing piece 8 provided by the embodiment of the present application can be used in the air tightness detection device. The air tightness detection device has a sealed cavity for accommodating a workpiece to be tested. The sealed cavity can be a cavity formed by the first mold set 1 and the second mold set 2. Due to the influence of machining precision, it is difficult to achieve good air tightness by directly clamping the first mold set 1 and the second mold set 2. Therefore, the sealing piece 8 with elasticity is arranged to achieve good sealing effect. In particular, when the first mold set 1 and the second mold set 2 need to be frequently opened and closed, the sealing piece 8 provided by the embodiment of the present application can achieve good sealing effect when the first mold set 1 and the second mold set 2 are clamped. The material of the sealing piece 8 can be rubber, plastic or silica gel with elasticity, which is not limited in particular. Specifically, the first sealing part 81 can be fixedly installed in the first mounting groove 12 of the first mold set 1. When the second mold set 2 approaches and clamps the first mold set 1, the second sealing part 82 can abut against the second mold set 2 and elastically deform to close the gap between the first mold set 1 and the second mold set 2, thereby achieving the sealing effect. The second sealing part 82 provided by the embodiment of the present application includes the first protruding peak 821 and the second protruding peak 822. The first protruding peak 821 and the second protruding peak 822 can abut against the matched parts respectively, thereby achieving the sealing effect respectively. Any one of the first protruding peak 821 and the second protruding peak 822 can take effect, that is, the sealing function can be achieved. Therefore, the sealing piece 8 provided by the present application has good reliability. In addition, the bottom width of the first sealing part 81 is greater than the top width, so that the possibility of the first sealing part 81 being separated from the first mounting groove 12 along the axial direction of the sealing piece 8 can be reduced. The risk of the sealing piece 8 being lifted and separated when the first mold set 1 and the second mold set 2 are separated can be reduced, and the stability of the installation of the sealing piece 8 can be improved.

[0085] The sealing piece 8 provided by the embodiment of the present application can be used in the air tightness detection device. The air tightness detection device has a sealed cavity for accommodating a workpiece to be tested. The sealed cavity can be a cavity formed by the first mold set 1 and the second mold set 2. Due to the influence of machining precision, it is difficult to achieve good air tightness by directly clamping the first mold set 1 and the second mold set 2. Therefore, the sealing piece 8 with elasticity is arranged to achieve good sealing effect. In particular, when the first mold set 1 and the second mold set 2 need to be frequently opened and closed, the sealing piece 8 provided by the embodiment of the present application can achieve good sealing effect when the first mold set 1 and the second mold set 2 are clamped. The material of the sealing piece 8 can be rubber, plastic or silica gel with elasticity, which is not limited in particular. Specifically, the first sealing part 81 can be fixedly installed in the first mounting groove 12 of the first mold set 1. When the second mold set 2 approaches and clamps the first mold set 1, the second sealing part 82 can abut against the second mold set 2 and elastically deform to close the gap between the first mold set 1 and the second mold set 2, thereby achieving the sealing effect. The second sealing part 82 provided by the embodiment of the present application includes the first protruding peak 821 and the second protruding peak 822. The first protruding peak 821 and the second protruding peak 822 can abut against the matched parts respectively, thereby achieving the sealing effect respectively. Any one of the first protruding peak 821 and the second protruding peak 822 can take effect, that is, the sealing function can be achieved. Therefore, the sealing piece 8 provided by the present application has good reliability. In addition, the bottom width of the first sealing part 81 is greater than the top width, so that the possibility of the first sealing part 81 being separated from the first mounting groove 12 along the axial direction of the sealing piece 8 can be reduced. The risk of the sealing piece 8 being lifted and separated when the first mold set 1 and the second mold set 2 are separated can be reduced, and the stability of the installation of the sealing piece 8 can be improved.

[0086] As shown in Figure 9 In a possible implementation, the sealing piece 8 has a first recess 83. The first recess 83 is located at the position where the second sealing part 82 and the first sealing part 81 are connected. The first recess 83 is recessed along the radial direction of the sealing piece 8.

[0087] The first recess 83 can provide deformation space for the second sealing portion 82 when the sealing member 8 is pressed. The first sealing portion 81 is arranged in the mounting groove and is not directly pressed by the equipment, so that the first sealing portion 81 does not deform or deforms relatively little when the sealing member 8 is pressed, while the second sealing portion 82 is used to abut against the equipment component to achieve the sealing function, so that the second sealing portion 82 deforms relatively greatly. After the second sealing portion 82 is pressed, the size of the second sealing portion 82 in the axial direction of the sealing member 8 decreases, and the size of the second sealing portion 82 in the radial direction of the sealing member 8 increases, so that the second sealing portion 82 can expand to the area where the first recess 83 is located, thereby smoothly deforming and facilitating the abutment of the second sealing portion 82 against the equipment to achieve the sealing function. When the equipment cooperating with the second sealing portion 82 has a groove, the second sealing portion 82 can abut against not only the top wall of the groove but also the side wall of the groove after deforming, thereby increasing the contact area of the second sealing portion 82 with the equipment and improving the reliability of the sealing.

[0088] As shown in Figure 9 , in a possible implementation, the second sealing portion 82 includes two first recesses 83, and the two first recesses 83 are respectively located on the inner side and the outer side of the sealing member 8 in the radial direction of the sealing member 8, so that both sides of the sealing member 8 can deform when the sealing member 8 is pressed, so that the sealing member 8 can be more closely in contact with the cooperating component or equipment, thereby enhancing the sealing effect. The first sealing portion 81 has a stepped surface 85 connected with the first recess 83 in the radial direction of the sealing member 8. When the sealing member 8 cooperates with other components or equipment, the stepped surface 85 can abut against other equipment or components, thereby enhancing the stability of the installation of the sealing member 8 and the sealing performance.

[0089] As shown in Figure 9 , in a possible implementation, the first protruding peak 821 and the second protruding peak 822 are connected with each other in the radial direction of the sealing member 8, and the first protruding peak 821 and the second protruding peak 822 have a second recess 84 therebetween, and the second recess 84 is recessed in the axial direction of the sealing member 8. The first protruding peak 821 and the second protruding peak 822 are connected with each other at the end connected with the first sealing portion 81, and the connection of the first protruding peak 821 and the second protruding peak 822 with each other can improve the overall structural strength and connection stability of the second sealing portion 82. When the first protruding peak 821 and the second protruding peak 822 are in contact with the equipment, the first protruding peak 821 and the second protruding peak 822 are pressed to deform, and the second recess 84 can provide deformation space.

[0090] As shown in Figure 9As shown, in a possible implementation, the first protruding peak 821 is inclined in a direction away from the second protruding peak 822, and the second protruding peak 822 is inclined in a direction away from the first protruding peak 821. The action direction of the component pair to the seal 8 is generally along the axial direction of the workpiece. When the second sealing part 82 is extruded, the first protruding peak 821 and the second protruding peak 822 will deviate in directions away from each other due to the inclination angle, so as to facilitate the first protruding peak 821 and the second protruding peak 822 to contact the matched components to form a seal, for example, the first protruding peak 821 can contact the top wall of the inner wall of the second mounting groove 26 after deviating, forming at least two contact positions, that is, forming two seals. The second protruding peak 822 can also form at least two seals, so that the seal 8 can form multiple seals, and the stability of the seal is improved.

[0091] As shown in the drawings, Figure 9 As shown, in a possible implementation, the first protruding peak 821 and the second protruding peak 822 are provided with a first arc surface 823 away from one end of the first sealing part 81. The first arc surface 823 is a region of a circular arc surface or a chamfer region at the end of the first protruding peak 821 or the second protruding peak 822. The device is generally provided with a structure matched with the second sealing part 82, for example, the device is provided with a groove matched with the second sealing part 82, and the first arc surface 823 can simultaneously contact two faces of the device, for example, the groove has a top wall and a side wall perpendicular to each other. When the first protruding peak 821 is extruded, the first arc surface 823 can simultaneously abut against the side wall and the top wall of the groove to form two seals, thereby enhancing the sealing effect of the second sealing part 82. The second protruding peak 822 also has the first arc surface 823, and thus has the same effect, which will not be described here. In addition, if the first protruding peak 821 and the second protruding peak 822 are square, the sharp corner positions of the square are relatively weak, which can be easily damaged under pressure. Therefore, the first arc surface 823 can reduce stress concentration and reduce the possibility of damage to the first protruding peak 821 and the second protruding peak 822 under pressure, thereby improving the overall strength of the second sealing part 82.

[0092] As shown in the drawings, Figure 9 As shown, in a possible implementation, the edge of the first sealing part 81 is provided with a second arc surface 812.

[0093] The first sealing part 81 can be installed in a pre-set mounting groove of the equipment, so that the seal 8 is installed and fixed as a whole. The edge of the first sealing part 81 has a second arc surface 812. For example, when the cross-section of the first sealing part 81 is trapezoidal, the four corners are provided with the second arc surface 812. The first sealing part 81 needs to be compressed and deformed to a certain extent during installation. The second arc surface 812 facilitates the placement of the first sealing part 81 in the mounting groove and reduces the risk of the first sealing part 81 being scratched or damaged during installation. Secondly, the second arc surface 812 can provide better pressure distribution, reduce the deformation of the high-pressure area of ​​the first sealing part 81 when it is under pressure, improve the stability of the installation of the first sealing part 81, and reduce the risk of the first sealing part 81 being squeezed out of the mounting groove during use.

[0094] like Figure 9 and Figure 10 As shown, in one possible embodiment, the seal 8 is annular, with the first sealing portion 81 and the second sealing portion 82 extending circumferentially along the seal 8. The annular seal 8 can contact and engage with the equipment to form a closed sealing area, achieving a sealing effect. The second sealing portion 82 is stacked with the first sealing portion 81, and the second sealing portion 82 and the first sealing portion 81 can also be correspondingly annular. The first protrusion 821 and the second protrusion 822 can be parallel to each other, with the first protrusion 821 located outside the second protrusion 822. The first protrusion 821 and the second protrusion 822 are similar to two concentric circles, providing multiple sealing functions and improving the stability of the seal.

[0095] In one possible implementation, the density of the seal 8 can be 7 × 10⁻⁶. -7 kg / mm3~8×10 -7 The weight per 100 kg / mm³, Young's modulus can be 6 MPa to 8 MPa, and Poisson's ratio can be 0.3 to 0.5. The specific values ​​can be achieved by selecting appropriate materials according to specific application requirements, thereby meeting the mechanical properties required by the seal and facilitating the improvement of the mechanical properties of the seal and the stability of the tooling.

[0096] This application provides a sealing member, which includes a first part, a second part, and a sealing element 8. The sealing element 8 is any of the sealing elements described in the above embodiments. The first part and the second part can be interlocked. The first part has a first locking groove, and the second part has a second locking groove. At least a portion of the first sealing part is tightly fitted into the first locking groove. When the first part and the second part are engaged, the second sealing part can abut against the inner wall of the second locking groove to improve the sealing performance of the sealing member. For example, the sealing member provided in this application can be a container for airtightness testing, or it can be part of an airtightness testing device; no specific limitations are made here.

[0097] In a possible implementation, the width of the first clamping groove gradually decreases in the direction close to the second piece, and the width of the first clamping groove is smaller than the width of the second clamping groove. When the first piece and the second piece are matched, at least the first protruding peak 821 and the second protruding peak 822 abut the groove bottom of the second clamping groove, and the first protruding peak 821 and the second protruding peak 822 are compressed and deformed. The shape of the first sealing part is adapted to the first clamping groove, which can reduce the possibility of the sealing piece 8 from the first clamping groove, thereby improving the stability of the sealing piece 8 installation, and reducing the risk of the sealing piece 8 from the first clamping groove when the first piece and the second piece are separated. The first protruding peak 821 and the second protruding peak 822 can be in contact with the bottom wall of the second clamping groove respectively, thereby forming a multiple seal, which can enhance the sealing effect and make the sealing member have good air tightness.

[0098] In a possible implementation, the sealing container provided by the embodiment of the present application includes an upper mold, a lower mold, and a sealing piece 8. The sealing piece 8 is the sealing piece 8 described in any of the above embodiments. The upper mold and the lower mold can be buckled to each other to form a sealed cavity. The lower mold has a first clamping groove, and the upper mold has a second clamping groove. The first sealing part is installed in the first clamping groove. When the upper mold and the lower mold are buckled, the second sealing part can abut the inner wall of the second clamping groove, thereby improving the sealing effect when the upper mold and the lower mold are buckled.

[0099] In a possible implementation, the width of the first clamping groove gradually decreases in the direction close to the upper mold, and the width of the first clamping groove is smaller than the width of the second clamping groove. The shape of the first sealing part is adapted to the first clamping groove, which can reduce the possibility of the sealing piece 8 from the first clamping groove, thereby improving the stability of the sealing piece 8 installation, and reducing the risk of the sealing piece 8 from the first clamping groove when the upper mold and the lower mold are separated.

[0100] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A seal, characterized in that, The sealing member is capable of elastic deformation, and comprises a first sealing part and a second sealing part connected along an axial direction of the sealing member, wherein the first sealing part gradually decreases in size in a radial direction of the sealing member along a direction from the first sealing part to the second sealing part, and the second sealing part comprises a first protruding peak and a second protruding peak spaced apart in the radial direction of the sealing member and extending along a circumferential direction of the sealing member.

2. The seal of claim 1, wherein The second sealing part gradually decreases in size in the radial direction of the sealing member along a direction from the second sealing part to the first sealing part, and comprises a first recessed part located at a connection position of the first sealing part and the second sealing part, and the first recessed part is recessed in the radial direction of the sealing member.

3. The seal of claim 1, wherein The first protruding peak and the second protruding peak have a second recessed part recessed in the axial direction of the sealing member.

4. The seal of claim 2, wherein, The second sealing part comprises two first recessed parts respectively located at an inner side surface and an outer side surface of the sealing member, and a stepped surface is formed at a side of the second sealing part connected to the first sealing part, and the stepped surface is connected to the first recessed part in the radial direction of the sealing member.

5. The seal of claim 1, wherein The first protruding peak and the second protruding peak have a first arc surface at an end away from the second sealing part.

6. The seal of any one of claims 1 to 5, wherein, The density of the sealing member is 7 x 10 -7 kg / mm 3 ~ 8 x 10 -7 kg / mm 3 , the Young's modulus is 6 Mpa ~ 8 Mpa, and the Poisson's ratio is 0.3 ~ 0.

5.

7. A sealing member characterized by, The sealing member comprises a first piece, a second piece and a sealing member, the sealing member is the sealing member according to any one of claims 1 to 6, the first piece and the second piece are capable of being buckled to each other, the first piece has a first clamping groove, the second piece has a second clamping groove, at least part of the first sealing part is tightly fitted in the first clamping groove, and when the first piece and the second piece are matched, the second sealing part is capable of abutting against an inner wall of the second clamping groove.

8. The sealing member of claim 7, wherein The first clamping groove gradually decreases in width along a direction close to the second piece, the width of the first clamping groove is smaller than the width of the second clamping groove, at least the first protruding peak and the second protruding peak abut against a groove bottom of the second clamping groove when the first piece and the second piece are matched, and the first protruding peak and the second protruding peak are compressed and deformed.

9. An air tightness testing apparatus characterized by, The air tightness detection device comprises a first module, a second module and a sealing member, the sealing member is the sealing member according to any one of claims 1 to 6, the first module and the second module are capable of being buckled to each other to form a sealed cavity, the first module has a first mounting groove at a side close to the second module, the second module has a second mounting groove at a side close to the first module, the second sealing part is mounted in the second mounting groove, and when the first module and the second module are buckled, the first sealing part is capable of extending into the first mounting groove and abutting against a top wall and a side wall of the first mounting groove respectively to seal the sealed cavity.

10. The air tightness testing apparatus of claim 9, wherein, The second mounting groove gradually decreases in width along a direction close to the first module, and the width of the first mounting groove is smaller than the width of the second mounting groove.

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