Leakage detection device

Abstract

The application relates to a sealing detection device. The sealing detection device comprises an upper clamp, a lower clamp and a leak detection mechanism, the upper clamp and the lower clamp are used for fixing a measured workpiece after combination; the leak detection mechanism comprises a round-hole sealing assembly, a horizontal sealing assembly, a vertical sealing assembly and an air-tightness leak detector, the round-hole sealing assembly, the horizontal sealing assembly and the vertical sealing assembly are connected with the upper clamp respectively, the round-hole sealing assembly is used for plugging a round-hole interface of the measured workpiece, and the horizontal sealing assembly and the vertical sealing assembly are used for plugging a right-angle surface interface of the measured workpiece; the air-tightness leak detector is connected with the measured workpiece during detection. The sealing detection device has the advantages of better sealing effect, long service life, low use cost, simple structure and convenient maintenance.

Description

TECHNICAL FIELD

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

[0002] Motorcycles are one of the main means of transportation for contemporary people, and engines are the core components of motorcycles. In order to ensure the sealing and safety of the engine, the sealing of the engine cylinder body or cylinder cover needs to be detected.

[0003] In the related art of engine cylinder body sealing detection, a custom clamp is usually used for plugging, and then an air leak detector is used for sealing detection. The measured cylinder body has a right-angle interface that needs to be sealed. The traditional sealing method for the right-angle interface is to set a continuous sealing ring on the corresponding right-angle mold according to the shape of the sealing surface, and to apply pressure to the right-angle mold to extrude the sealing ring to achieve sealing effect.

[0004] However, the service life of the sealing ring in this way is short, and the sealing effect is unreliable, especially the boundary between the two surfaces. Since the edge of the junction is relatively sharp, it may cut the sealing ring during the sealing process, causing leakage and affecting the test results. SUMMARY

[0005] Therefore, it is necessary to provide a sealing detection device to solve the problem of unreliable sealing effect of the right-angle interface.

[0006] A sealing detection device for detecting the sealing of a measured workpiece:

[0007] The sealing detection device comprises an upper clamp, a lower clamp and a leak detection mechanism, and the upper clamp and the lower clamp are used to fix the measured workpiece after combination;

[0008] The leak detection mechanism comprises a round hole sealing assembly, a horizontal sealing assembly, a vertical sealing assembly and a gas tightness leak detector, the round hole sealing assembly, the horizontal sealing assembly and the vertical sealing assembly are connected with the upper clamp respectively, the round hole sealing assembly is used to plug the round hole interface of the measured workpiece, and the horizontal sealing assembly and the vertical sealing assembly are used to plug the right-angle interface of the measured workpiece;

[0009] The gas tightness leak detector is connected with the measured workpiece during detection.

[0010] In one embodiment, the round hole sealing assembly comprises a first driving unit, a first support and a round hole sealing piece, the first driving unit is connected with the upper clamp through the first support, the output end of the first driving unit is connected with the round hole sealing piece, and the power output direction of the first driving unit is arranged along the opening direction of the round hole interface.

[0011] In one of the embodiments, the horizontal sealing assembly comprises a second support and a horizontal sealing member, the horizontal sealing member is connected to the upper clamp through the second support, and the horizontal sealing member is provided with a horizontal sealing surface.

[0012] When the upper clamp and the lower clamp are closed, the horizontal sealing surface covers the horizontal surface of the right-angle surface interface.

[0013] In one of the embodiments, the vertical sealing assembly comprises a second driving unit, a third support and a vertical sealing member, the second driving unit is connected to the upper clamp through the third support, the output end of the second driving unit is connected to the vertical sealing member, and the power output direction of the second driving unit is perpendicular to the vertical surface of the right-angle surface interface.

[0014] In one of the embodiments, the horizontal sealing member is provided with a first side surface, and the first side surface is arranged in a flush manner with the vertical surface of the right-angle surface interface.

[0015] The vertical sealing assembly further comprises an auxiliary sealing member, the auxiliary sealing member is arranged between the vertical sealing member and the vertical surface of the right-angle surface interface, when the upper clamp and the lower clamp are closed, the auxiliary sealing member is arranged on the plane formed by the vertical surface of the right-angle surface interface and the first side surface, and the vertical sealing member abuts against the auxiliary sealing member.

[0016] In one of the embodiments, the horizontal sealing surface is provided with a first sealing ring according to the contact profile of the horizontal surface of the right-angle surface interface.

[0017] In one of the embodiments, the auxiliary sealing member is provided with a second sealing ring on the contact profile of the vertical surface and the first side surface, and the auxiliary sealing member is provided with a third sealing ring on the contact profile of the vertical sealing member.

[0018] In one of the embodiments, the sealing property detection device further comprises a frame and a feeding and discharging mechanism, the feeding and discharging mechanism comprises a guide rail, a mounting plate and a feeding and discharging driving unit, the guide rail is mounted at the bottom of the frame, and the guide rail is arranged on the line connecting the feeding and discharging position and the detection position, the mounting plate is slidably arranged on the guide rail, the feeding and discharging driving unit is mounted on the frame, the power output end of the feeding and discharging driving unit is connected to the mounting plate, and the lower clamp is detachably mounted on the mounting plate.

[0019] In one of the embodiments, the sealing property detection device further comprises a clamp driving mechanism, the clamp driving mechanism is arranged at the top of the frame, and the clamp driving mechanism drives the upper clamp to combine with or separate from the lower clamp.

[0020] The clamp driving mechanism comprises a suspension plate, a pressing driving unit and a balancing driving unit, the pressing driving unit and the balancing driving unit are installed on the top plate of the frame, the output ends of the pressing driving unit and the balancing driving unit are connected downward with the suspension plate, and the upper clamp is detachably installed below the suspension plate.

[0021] In one of the embodiments, the upper clamp comprises a first base plate and a connecting column, the connecting column is arranged on the upper surface of the first base plate, and a bayonet is arranged on the connecting column; the clamp driving mechanism further comprises a connecting assembly, the connecting assembly comprises a connecting block and a connecting driving unit, the connecting driving unit is arranged on the suspension plate, the output end of the connecting driving unit is connected with the connecting block, a connecting hole and a clamping groove are arranged on the connecting block in communication, the connecting column can pass through the connecting hole, and the bayonet on the connecting column can be clamped into the clamping groove to form a connection, and the connecting driving unit is used to drive the connecting block to move so as to switch the connection of the connecting column with the connecting hole or the clamping groove.

[0022] The sealing detection device can seal the circular hole interface on the cylinder body, and can seal the circular hole interface within a certain diameter range. The sealing effect is good, and the sealing device can be compatible with various types of products. For the right-angle face interface, the right-angle face interface is decomposed into a horizontal face and a vertical face, and then sealed by a horizontal sealing assembly and a vertical sealing assembly. The vertical sealing assembly is provided with an auxiliary sealing member to seal the vertical face and the first side face separately. The sealing process covers the intersection of the vertical face and the first side face, thereby achieving better sealing effect. The sealing ring is not in direct contact with the sharp boundary, thereby improving the sealing performance of the right-angle face interface and reducing the risk of poor sealing effect caused by cutting the sealing ring with a sharp edge. This way not only has better sealing effect and longer service life, but also has low use cost, simple structure and easy maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure diagram of the leak detection mechanism of the sealing detection device is shown.

[0024] Figure 2 Another structure diagram of the leak detection mechanism of the sealing detection device is shown.

[0025] Figure 3 The exploded view of the horizontal sealing assembly and the vertical sealing assembly of the sealing detection device is shown.

[0026] Figure 4 The structure diagram of the vertical sealing assembly of the sealing detection device is shown.

[0027] Figure 5A structural schematic diagram of a sealing detection device according to an embodiment of the present application.

[0028] Figure 6 Another structural schematic diagram of a sealing detection device according to an embodiment of the present application.

[0029] Figure 7 A structural schematic diagram of a clamp driving mechanism of a sealing detection device according to an embodiment of the present application.

[0030] Figure 8 A structural schematic diagram of a connecting assembly of a sealing detection device according to an embodiment of the present application.

[0031] Reference signs: 100, workpiece to be measured; 110, right-angle surface interface; 120, round-hole interface;

[0032] 200, frame; 210, bottom plate; 220, top plate;

[0033] 300, feeding and discharging mechanism; 310, feeding and discharging driving unit; 320, mounting plate; 330, guide rail;

[0034] 400, lower clamp; 500, upper clamp; 510, first base plate; 520, connecting column; 520A, bayonet;

[0035] 600, clamp driving mechanism; 610, pressing driving unit; 620, balancing driving unit; 630, suspension plate; 640, connecting assembly; 641, connecting driving unit; 642, connecting block; 642A, connecting hole; 642B, clamping groove;

[0036] 700, leak detection mechanism; 710, round-hole sealing assembly; 711, first driving unit; 712, first support; 713, round-hole sealing member; 720, horizontal sealing assembly; 721, horizontal sealing member; 721A, first side surface; 722, second support; 730, vertical sealing assembly; 731, vertical sealing member; 732, second driving unit; 733, auxiliary sealing member; 734, third support. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways other than those described herein without departing from the spirit of the present application. It is also to be understood that the following description is merely illustrative of the principles of the present application and that numerous variations of the principles of the present application can be made and the scope of the present application is defined by the appended claims.

[0038] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0039] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0040] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] It is to be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms as used herein only mean for the purpose of illustration and are not meant to be limiting.

[0043] Referring to Figure 1 , Figure 1 The structure of the leak detection mechanism of the sealing detection device in the embodiment of the present application is shown. The sealing detection device provided by the embodiment of the present application is used for detecting the sealing of a measured workpiece 100 and includes an upper clamp 500, a lower clamp 400, and a leak detection mechanism 700. The upper clamp 500 and the lower clamp 400 are used to fix the measured workpiece 100 after being combined, and the leak detection mechanism 700 is used to detect the sealing after sealing the measured workpiece 100. It is to be noted that the measured workpiece 100 in the embodiment is an engine cylinder body, which has a multi-faceted special-shaped port, and the leak detection mechanism 700 can seal it with high reliability.

[0044] The leak detection mechanism 700 includes a round hole sealing assembly 710, a horizontal sealing assembly 720, a vertical sealing assembly 730, and a gas tightness leak detector. The round hole sealing assembly 710, the horizontal sealing assembly 720, and the vertical sealing assembly 730 are respectively connected with the upper clamp 500, and the leak detection mechanism 700 is combined with the lower clamp 400. Figure 3 As shown, the round hole sealing assembly 710 is used to block the round hole interface 120 of the measured workpiece 100, and the horizontal sealing assembly 720 and the vertical sealing assembly 730 are used to block the right-angle surface interface 110 of the measured workpiece 100. The gas tightness leak detector is connected with the measured workpiece 100 during detection.

[0045] The sealing detection device described in the embodiment of the present application is used for detecting the sealing of the measured workpiece 100, which is an engine cylinder body. The measured workpiece 100 is provided with a round hole interface 120 and a right-angle surface interface 110. For the round hole interface 120, the round hole sealing assembly 710 is used to seal the round hole interface 120. The right-angle surface interface 110 includes a horizontal surface and a vertical surface which are perpendicular to each other. For the horizontal surface of the right-angle surface interface 110, the horizontal sealing assembly 720 is used to seal the horizontal surface, and for the vertical surface of the right-angle surface interface 110, the vertical sealing assembly 730 is used to seal the vertical surface. After all the interfaces of the measured workpiece 100 are sealed, the gas tightness leak detector is connected with the internal cavity of the measured workpiece 100, so that the sealing of the measured workpiece 100 is detected.

[0046] The sealing detection device provided in the embodiment of the present application has the advantages that the sealing effect is better and the service life is longer.

[0047] In combination Figure 2 as shown, Figure 2 Another structural schematic diagram of a leak detection mechanism of the sealing detection device in the embodiment of the present application is shown, and in some embodiments, the round hole sealing assembly 710 includes a first driving unit 711, a first support 712 and a round hole sealing element 713. The first driving unit 711 is connected to the upper clamp 500 through the first support 712, the output end of the first driving unit 711 is connected to the round hole sealing element 713, and the power output direction of the first driving unit 711 is arranged along the opening direction of the round hole interface 120. By connecting the first support 712 to the upper clamp 500, when the upper clamp 500 is closed, the first support 712 and the first driving unit 711 arranged above the first support 712 are driven to move, so that the power output direction of the first driving unit 711 is aligned with the opening direction of the round hole interface 120. Then, the first driving unit 711 drives the round hole sealing element 713 to block the round hole interface 120, and the sealing operation of the round hole interface 120 is completed. It should be noted that the round hole sealing element 713 adopts an internal expansion type sealing mode, which can seal the round hole interface within a certain diameter range. The sealing effect is good, and the sealing element can be compatible with multiple types of products, which has the advantages of good sealing effect and good compatibility.

[0048] Further, Figure 2 and Figure 3 In order to seal the horizontal surface of the right-angle surface interface 110, the horizontal sealing assembly 720 includes a second support 722 and a horizontal sealing element 721, and the horizontal sealing element 721 is connected to the upper clamp 500 through the second support 722. The horizontal sealing element 721 is provided with a horizontal sealing surface. The upper clamp 500 includes a first base plate 510. When the upper clamp 500 and the lower clamp 400 are closed, the second support 722 connected to the first base plate 510 pushes the horizontal sealing element 721 to move downward, so that the horizontal sealing surface located at the bottom of the horizontal sealing element 721 covers the horizontal surface of the right-angle surface interface 110, and the sealing operation of the horizontal surface of the right-angle surface interface 110 is completed.

[0049] Further, Figure 2 and Figure 3As shown, in order to seal the vertical surface of the right-angle surface interface 110, the vertical sealing assembly 730 includes a second driving unit 732, a third bracket 734 and a vertical sealing piece 731, the second driving unit 732 is connected with the upper clamp 500 through the third bracket 734, the output end of the second driving unit 732 is connected with the vertical sealing piece 731, and the power output direction of the second driving unit 732 is perpendicular to the vertical surface of the right-angle surface interface 110. The second driving unit 732 is connected with the upper clamp 500 through the third bracket 734, when the upper clamp 500 is combined with the lower clamp 400, the upper clamp 500 drives the third bracket 734 to move, and then drives the second driving unit 732 to move to a predetermined position, the second driving unit 732 drives the vertical sealing piece 731 arranged at the output end to move, so that the vertical sealing piece 731 covers the vertical surface of the right-angle surface interface 110, and the sealing operation of the vertical surface of the right-angle surface interface 110 is completed.

[0050] Further, as shown in the figure, Figures 2 to 4 As shown, the horizontal sealing piece 721 is provided with a first side surface 721A, and the first side surface 721A is arranged in the same plane with the vertical surface of the right-angle surface interface 110. The vertical sealing assembly 730 further includes an auxiliary sealing piece 733, which is arranged between the vertical sealing piece 731 and the vertical surface of the right-angle surface interface 110. When the upper clamp 500 and the lower clamp 400 are closed for detection, the auxiliary sealing piece 733 is arranged on the plane formed by the vertical surface of the right-angle surface interface 110 and the first side surface 721A, and the vertical sealing piece 731 abuts against the auxiliary sealing piece 733. Since the first side surface 721A is arranged in the same plane with the vertical surface of the right-angle surface interface 110, the auxiliary sealing piece 733 is arranged to cover the plane formed by the first side surface 721A and the vertical surface of the right-angle surface interface 110, so that the vertical sealing piece 731 tightly presses the auxiliary sealing piece 733 to form a sealed connection during the sealing detection. The vertical sealing assembly 730 is provided with the auxiliary sealing piece 733 to separately seal the vertical surface and the first side surface 721A, and the sealing process covers the intersection of the vertical surface and the first side surface 721A, so that better sealing effect is achieved, the direct contact between the sharp boundary and the sealing piece is avoided, the risk of the sharp edge cutting the sealing piece to cause poor sealing effect is reduced, and the advantages of low cost and easy maintenance are achieved.

[0051] Preferably, a first sealing ring is arranged on the contact contour of the horizontal sealing surface according to the horizontal surface of the right-angle surface interface 110. A second sealing ring is arranged on the contact contour of the auxiliary sealing piece 733 and the vertical surface and the first side surface 721A; and a third sealing ring is arranged on the contact contour of the auxiliary sealing piece 733 and the vertical sealing piece 731. By arranging the first sealing ring, the second sealing ring and the third sealing ring on the contact contour between the planes, the sealing property when the planes abut against each other is guaranteed, and the sealing effect of the horizontal sealing piece 721, the vertical sealing piece 731 and the auxiliary sealing piece 733 and the right-angle surface interface is ensured.

[0052] In a preferred embodiment, as shown in Figure 5 and Figure 6 The sealing detection device further comprises a frame 200 and a feeding and discharging mechanism 300, the feeding and discharging mechanism 300 comprises a guide rail 330, a mounting plate 320 and a feeding and discharging driving unit 310, the guide rail 330 is installed on the bottom of the frame 200, and the guide rail 330 is arranged on the line connecting the feeding and discharging position and the detection position. Specifically, the bottom of the frame 200 is provided with a bottom plate 210, and the guide rail 330 is installed on the bottom plate 210. The mounting plate 320 is slidably arranged on the guide rail 330, and the feeding and discharging driving unit 310 is installed on the frame 200. The power output end of the feeding and discharging driving unit 310 is connected with the mounting plate 320, and the lower clamp 400 is detachably installed on the mounting plate 320. Through the feeding and discharging mechanism 300, the lower clamp 400 can be driven to switch between the feeding and discharging position and the detection position. When feeding is needed, the feeding and discharging driving unit 310 drives the lower clamp 400 installed on the mounting plate 320 to the feeding and discharging position, and then the workpiece 100 to be tested is placed on the lower clamp 400. Then the lower clamp 400 is driven to the detection position to combine with the upper clamp 500 for sealing detection. The feeding and discharging driving unit 310 can automatically complete the transmission from feeding and discharging to detection. In addition, the automatic mechanical hand can be matched to automatically feed and discharge the workpiece 100 to be tested at the feeding and discharging position, further improving the degree of automation and reducing the use cost.

[0053] Specifically, in order to drive the upper clamp 500 to combine with or separate from the lower clamp 400, as shown in Figure 6 and Figure 7As shown, the sealing detection device further comprises a clamp driving mechanism 600 for driving the upper clamp 500 to combine or separate with the lower clamp 400, the clamp driving mechanism 600 is arranged on the top of the frame 200, specifically, the top of the frame 200 is provided with a top plate 220, and the clamp driving mechanism 600 is installed on the top plate 220. The clamp driving mechanism 600 comprises a suspension plate 630, a pressing driving unit 610 and a balance driving unit 620, the pressing driving unit 610 and the balance driving unit 620 are installed on the top plate 220 of the frame 200, and the output ends of the pressing driving unit 610 and the balance driving unit 620 are connected downward with the suspension plate 630, and the upper clamp 500 is detachably installed below the suspension plate 630. By arranging the pressing driving unit 610 to drive the suspension plate 630 to move downward, the upper clamp 500 is detachably installed on the suspension plate 630, when the lower clamp 400 is located at the detection position, the driving unit 610 drives the suspension plate 630 to move downward with the upper clamp 500, and the combination with the lower clamp 400 is completed, after the detection is completed, the driving unit 610 drives the suspension plate 630 to move upward with the upper clamp 500, and the separation with the lower clamp 400 is completed. The balance driving unit 620 is further arranged to balance the weight of the suspension plate 630, so as to ensure that the upper clamp 500 and the lower clamp 400 are combined or separated stably.

[0054] Specifically, in order to make the upper clamp 500 and the suspension plate 630 form detachable connection, as shown in Figure 7 and Figure 8 The upper clamp 500 comprises a first base plate 510 and a connecting column 520, the connecting column 520 is arranged on the upper surface of the first base plate 510, and the connecting column 520 is provided with a bayonet 520A; the clamp driving mechanism 600 further comprises a connecting assembly 640, the connecting assembly 640 comprises a connecting block 642 and a connecting driving unit 641, the connecting driving unit 641 is arranged on the suspension plate 630, the output end of the connecting driving unit 641 is connected with the connecting block 642, the connecting block 642 is provided with a connecting hole 642A and a clamping groove 642B which are communicated, the connecting column 520 can pass through the connecting hole 642A, the bayonet 520A on the connecting column 520 can be clamped into the clamping groove 642B to form connection, and the connecting driving unit 641 is used to drive the connecting block 642 to move, so as to switch the connection of the connecting column 520 with the connecting hole 642A or the clamping groove 642B.

[0055] The upper clamp 500 and the hanging plate 630 are connected through the connecting column 520 and the connecting block 642, the connecting column 520 is in a free detachable unlocking state on the connecting hole 642A, and the locking state is formed when the bayonet 520A of the connecting column 520 is clamped into the clamping groove 642B of the connecting block 642. The connecting block 642 is driven to move through the connecting driving unit 641, the connecting column 520 can be switched between the connecting hole 642A or the clamping groove 642B, the connecting column 520 and the connecting block 642 are switched between the unlocking state and the locking state, when the upper clamp 500 is installed, the connecting column 520 and the connecting block 642 are in the locking state, when the upper clamp 500 needs to be replaced, the connecting column 520 and the connecting block 642 are in the unlocking state.

[0056] The sealing detection device has the following beneficial effects:

[0057] 1. By splitting the right-angle face interface 110 into a horizontal face and a vertical face, the horizontal sealing assembly 720 and the vertical sealing assembly 730 are respectively arranged to seal different faces, avoiding the risk that the integrated sealing piece is squeezed and cut by the intersection of the horizontal face and the vertical face, resulting in poor sealing effect, having the advantages of better sealing effect and long service life.

[0058] 2. The vertical sealing assembly 730 is provided with an auxiliary sealing piece 733 to separately seal the vertical face and the first side face 721A, the intersection of the vertical face and the first side face 721A is covered in the sealing process, so that better sealing effect is achieved, avoiding the risk that the sharp boundary directly contacts the sealing piece, reducing the risk that the right-angle edge cuts the sealing piece, resulting in poor sealing effect, having the advantages of low cost and easy maintenance.

[0059] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0060] The above-described embodiments only express several implementation manners of the application, the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are all within the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A sealing performance testing device for testing the sealing performance of a workpiece (100), characterized in that: It includes an upper clamp (500), a lower clamp (400), and a leak detection mechanism (700), wherein the upper clamp (500) and the lower clamp (400) are used to fix the workpiece (100) to be tested after being combined. The leak detection mechanism (700) includes a round hole sealing assembly (710), a horizontal sealing assembly (720), a vertical sealing assembly (730), and an airtightness leak detector. The round hole sealing assembly (710), the horizontal sealing assembly (720), and the vertical sealing assembly (730) are respectively connected to the upper clamp (500). The round hole sealing assembly (710) is used to seal the round hole interface (120) of the workpiece (100) being tested, and the horizontal sealing assembly (720) and the vertical sealing assembly (730) are used to seal the right angle interface (110) of the workpiece (100) being tested. The airtightness leak detector is connected to the workpiece (100) being tested during the test; The circular hole sealing assembly (710) includes a first drive unit (711), a first bracket (712), and a circular hole seal (713). The horizontal sealing assembly (720) includes a second bracket (722) and a horizontal seal (721). The vertical sealing assembly (730) includes a second drive unit (732), a third bracket (734), and a vertical seal (731). The second drive unit (732) is connected to the upper clamp (500) through the third bracket (734). The output end of the second drive unit (732) is connected to the vertical seal (731). The power output direction of the second drive unit (732) is perpendicular to the vertical plane of the right-angle interface (110). The horizontal seal (721) is provided with a first side surface (721A), which is flush with the vertical surface of the right-angle interface (110); The vertical sealing assembly (730) further includes an auxiliary seal (733), which is disposed between the vertical seal (731) and the vertical surface of the right-angle interface (110). When the upper clamp (500) and the lower clamp (400) are closed for detection, the auxiliary seal (733) is disposed on the plane formed by the connection between the vertical surface of the right-angle interface (110) and the first side surface (721A), and the vertical seal (731) abuts against the auxiliary seal (733). The sealing performance testing device further includes a frame (200) and a loading / unloading mechanism (300). The loading / unloading mechanism (300) includes a guide rail (330), a mounting plate (320), and a loading / unloading drive unit (310). The sealing performance testing device also includes a clamp drive mechanism (600). The clamp drive mechanism (600) includes a suspension plate (630), a clamping drive unit (610), and a balancing drive unit (620). The upper clamp (500) includes a first base plate (510) and a connecting post (520). The connecting post (520) is disposed on the upper surface of the first base plate (510), and the connecting post (520) is provided with a bayonet (520A). The clamp drive mechanism (600) also includes a connecting assembly (640). The connecting component (640) includes a connecting block (642) and a connecting drive unit (641). The connecting drive unit (641) is disposed on the suspension plate (630). The output end of the connecting drive unit (641) is connected to the connecting block (642). The connecting block (642) is provided with a connecting hole (642A) and a slot (642B). The connecting post (520) can pass through the connecting hole (642A). The slot (520A) on the connecting post (520) can be inserted into the slot (642B) to form a connection. The connecting drive unit (641) is used to drive the connecting block (642) to move in order to switch the connection between the connecting post (520) and the connecting hole (642A) or the slot (642B).

2. The sealing performance testing device according to claim 1, characterized in that: The first drive unit (711) is connected to the upper clamp (500) through the first bracket (712), the output end of the first drive unit (711) is connected to the round hole seal (713), and the power output direction of the first drive unit (711) is set along the opening direction of the round hole interface (120).

3. The sealing performance testing device according to claim 1, characterized in that: The horizontal seal (721) is connected to the upper clamp (500) via the second bracket (722), and the horizontal seal (721) is provided with a horizontal sealing surface; When the upper clamp (500) and the lower clamp (400) are closed, the horizontal sealing surface covers the horizontal surface of the right-angle interface (110).

4. The sealing performance testing device according to claim 3, characterized in that: A first sealing ring is provided on the horizontal sealing surface according to the contact contour of the horizontal surface of the right-angle interface (110).

5. The sealing performance testing device according to claim 3, characterized in that: The auxiliary seal (733) has a second sealing ring on the contact contour between the vertical surface and the first side surface (721A); the auxiliary seal (733) has a third sealing ring on the contact contour between the vertical seal (731).

6. The sealing performance testing device according to any one of claims 1-5, characterized in that: The guide rail (330) is installed at the bottom of the frame (200) and is located on the line connecting the loading / unloading position and the detection position. The mounting plate (320) is slidably mounted on the guide rail (330). The loading / unloading drive unit (310) is installed on the frame (200). The power output end of the loading / unloading drive unit (310) is connected to the mounting plate (320). The lower clamp (400) is detachably mounted on the mounting plate (320).

7. The sealing performance testing device according to claim 6, characterized in that: The clamp driving mechanism (600) is disposed on the top of the frame (200), and the clamp driving mechanism (600) drives the upper clamp (500) to engage or disengage from the lower clamp (400); The clamping drive unit (610) and the balancing drive unit (620) are mounted on the top plate (220) of the frame (200). The output ends of the clamping drive unit (610) and the balancing drive unit (620) are connected downward to the suspension plate (630). The upper clamp (500) is detachably mounted under the suspension plate (630).

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