Air tightness detection device

Abstract

The present invention relates to the technical field of detection equipment, and specifically discloses an airtightness detection device. The airtightness detection device includes a frame, a sealing component, an inflation component, a transfer component and a pressure detection component. A loading station is provided on one side of the frame; the sealing component includes a plurality of sealing structures, and the plurality of sealing structures are together enclosed to form a detection area, and at least one side of the detection area is open, and the loading station is provided corresponding to the open side of the detection area; each sealing structure includes a sealing head, and each sealing head has a sealing state and a state to be detected, wherein at least one sealing head is provided with an inflation hole; the inflation component is provided on the frame, and the inflation component is connected to the sealing head provided with the inflation hole, and is used to inflate toward the shell; the transfer component moves the part to be detected back and forth between the loading station and the detection area; the pressure detection component is used to detect the air pressure value in the shell. The airtightness detection device provided by the present invention has high detection efficiency and more guaranteed detection quality.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to an airtightness detection device. Background Art

[0002] Some housings made from a combination of materials, such as metal and plastic injection-molded housings, are prone to defects at the joints between the different materials, which can easily form small holes and lead to insufficient housing strength or water leakage. To ensure housing quality, housings must be tested for airtightness after production. Traditionally, this test involves placing the housing in water to observe for bubbles. The presence of bubbles indicates a defect. However, this manual inspection method is inefficient and unreliable, resulting in a high rate of defective products and impacting production costs. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that the traditional air tightness detection has low detection efficiency and cannot guarantee the detection quality, which affects the production cost.

[0004] To solve the above technical problems, the present invention provides an airtightness detection device suitable for performing airtightness detection on a to-be-detected component, wherein the to-be-detected component includes a housing and a plurality of openings provided on the outer circumference of the housing, and the plurality of openings are interconnected. The airtightness detection device includes:

[0005] A frame, wherein a loading station is provided on one side of the frame;

[0006] A blocking assembly is provided on the frame, the blocking assembly comprising a plurality of blocking structures, the plurality of blocking structures collectively enclosing a detection area, at least one side of the detection area being open, the loading station being provided corresponding to the open side of the detection area; each of the blocking structures comprises a blocking head, each of the blocking heads having a blocking state close to the detection area for blocking an opening on the to-be-detected component, and a to-be-detected state away from the detection area, wherein at least one of the blocking heads is provided with an inflation hole;

[0007] an inflatable component, disposed on the frame, the inflatable component being in communication with the blocking head provided with the inflatable hole, and being used for inflating air into the shell;

[0008] A transfer assembly, movably arranged on the frame, for reciprocatingly moving the parts to be inspected between the loading station and the inspection area;

[0009] The pressure detection component is used to detect the air pressure value in the shell.

[0010] Optionally, the multiple sealing structures include multiple circumferential sealing structures and a top sealing structure. The multiple circumferential sealing structures are suitable for being set corresponding to the multiple circumferential side surfaces of the part to be inspected, the top sealing structure is suitable for being set corresponding to the top surface of the part to be inspected, and the transfer assembly is suitable for supporting the bottom of the part to be inspected.

[0011] Optionally, the top blocking structure includes:

[0012] A crimping block is movably mounted on the frame and has a movable travel in the up-down direction of the frame;

[0013] A top blocking block is provided at the bottom of the crimping block;

[0014] Among them, a positioning part is provided on the crimping block, and a matching part is provided on the transfer assembly. After the transfer assembly transfers the part to be inspected into the inspection area, the positioning part and the matching part cooperate to limit and fix the transfer assembly in the inspection area.

[0015] Optionally, the positioning portion includes a plurality of positioning bosses protruding from the bottom of the crimping block;

[0016] The transfer assembly includes a transfer platform movably arranged on the frame, and the transfer platform has a reciprocating movement stroke between the loading station and the detection area. The matching part includes a plurality of positioning grooves arranged on the transfer platform, and the plurality of positioning grooves are arranged in a one-to-one correspondence with the plurality of positioning bosses.

[0017] Optionally, a mounting groove is provided on the transfer platform, and the mounting groove is suitable for accommodating the part to be detected therein, and the openings on the peripheral side of the shell of the part to be detected are exposed outside the mounting groove.

[0018] Optionally, the top blocking structure further includes a lateral blocking component, and the lateral blocking component is located on one side of the crimping block and corresponds to the side of the detection area that is open.

[0019] Optionally, the lateral blocking component includes:

[0020] A support frame connected to the frame;

[0021] A connecting block connected to the supporting frame;

[0022] a first plugging head, slidably disposed on the connecting block;

[0023] a first sealing head driving member connected to the first sealing head;

[0024] One of the connecting block and the first plugging head is provided with a slide rail, and the other is provided with a slider, and in the direction from the loading station toward the detection area, the slide rail is arranged to be tilted downward along the frame.

[0025] Optionally, each of the circumferential blocking structures includes:

[0026] A mounting base, provided on the frame;

[0027] a second plugging head slidably mounted on the mounting seat and located on one side of the detection area;

[0028] The second sealing head driving member is provided on the mounting seat and connected to the second sealing head, and is used for driving the second sealing head to switch between the sealing state and the waiting-for-inspection state.

[0029] Optionally, the second sealing head driving member includes a first driving member and a transmission member connected to the first driving member, the transmission member is connected to the second sealing head, and the first driving member drives the transmission member to move back and forth to drive the second sealing head into the detection area and away from the detection area.

[0030] Optionally, the first driving component includes a first driving motor, a first gear connected to the output shaft of the first driving motor, a second gear meshing with the first gear, and a screw connected to the second gear. The transmission member is provided with a nut meshing with the screw. The first driving motor drives the first gear to rotate, drives the second gear to rotate, and drives the screw to rotate. Under the cooperation of the nut of the transmission member and the screw, the transmission member is driven to move in a direction close to or away from the detection area.

[0031] The technical solution provided by the present invention has the following advantages:

[0032] The airtightness detection device provided by the present invention includes a frame, a sealing component, an inflation component, a transfer component and a pressure detection component. The sealing component includes multiple sealing structures. The multiple sealing structures can be set corresponding to the multiple surfaces to be detected of the part to be detected, so that the openings on each surface to be detected of the part to be detected can be blocked at the same time. After the openings on the part to be detected are all blocked by the sealing head, gas is filled into the shell through the inflation component to detect the air pressure value in the shell through the pressure detection component. When the air pressure value in the shell reaches a preset value within a preset time, it indicates that the airtightness of the shell of the part to be detected is good. Otherwise, the airtightness of the surface shell is not good. The detection efficiency is high and the detection quality is more guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic structural diagram of an embodiment of an airtightness detection device provided by the present invention;

[0035] Figure 2 for Figure 1 A schematic diagram of the structure of the air tightness detection device (excluding the frame);

[0036] Figure 3 for Figure 2 A schematic structural diagram of the blocking assembly;

[0037] Figure 4 for Figure 2 A schematic structural diagram of the top plugging structure described in ;

[0038] Figure 5 for Figure 4 A schematic structural diagram of the lateral blocking component;

[0039] Figure 6 for Figure 2 A schematic structural diagram of the circumferential blocking structure;

[0040] Figure 7 for Figure 6 Schematic diagram of the structure of the circumferential blocking structure described in .

[0041] Description of reference numerals:

[0042] 100-airtightness detection device; 1-frame; 2-sealing assembly; 21-circumferential sealing structure; 211-mounting seat; 212-second sealing head; 213-second sealing head drive member; 2131-first drive motor; 2132-first gear; 2133-second gear; 2134-screw; 2135-transmission member; 22-top sealing structure; 221-pressing block; 2211-positioning portion; 2211a- Positioning boss; 222-top blocking block; 223-lateral blocking component; 2231-support frame; 2232-connecting block; 2233-first blocking head; 3-inflating component; 4-transfer component; 41-transfer platform; 411-matching part; 4111-positioning groove; 412-installation slot; 5-detection mechanism; 51-sensing part; 52-detection part; 6-limiting structure; 61-detection plate; 62-photoelectric detector. DETAILED DESCRIPTION

[0043] The technical solutions of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features therein may be combined with each other unless there is a conflict.

[0044] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0045] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0046] The present invention provides an airtightness detection device 100, which is suitable for detecting the airtightness of a part to be detected, wherein the part to be detected includes a shell and a plurality of openings provided on the outer surface of the shell, and the plurality of openings are interconnected. The shell is sealed by the airtightness detection device 100, and air is inflated into the shell to detect the air pressure value in the shell, so as to determine whether the entire shell is airtight, thereby ensuring the quality of the part to be detected.

[0047] Specifically, see Figure 1 and Figure 2The airtightness detection device 100 includes a frame 1, and a blocking component 2, an inflation component 3, a transfer component 4 and a pressure detection component (not shown in the drawings) arranged on the frame 1. The frame 1 can be in the shape of a flat plate, or a box structure formed by connecting steel structures, or a support column, etc., which is not specifically limited here. A loading station is provided on one side of the frame 1; the blocking component 2 includes a plurality of blocking structures, and the plurality of blocking structures are used to enclose a detection area together. At least one side of the detection area is open, and the loading station is arranged corresponding to the open side of the detection area for placing the material to be tested, and transferring the material to be tested from the open side to the detection area through the transfer component 4, wherein each blocking component The structure includes a plugging head, each plugging head has a plugging state close to the detection area to block the opening on the to-be-detected part, and a to-be-detected state away from the detection area, wherein at least one plugging head is provided with an inflation hole; the inflation component 3 is connected to the plugging head provided with the inflation hole, and is used to inflate air into the shell; the transfer component 4 is used to move the to-be-detected part back and forth between the loading station and the detection area, so as to transfer the to-be-detected part to the detection area for air tightness testing; the pressure detection component is used to detect the air pressure value in the shell. When the air pressure value in the shell can reach the preset value within the preset time, it indicates that the air tightness of the shell of the to-be-detected part is good, otherwise, it indicates that the air tightness of the shell is poor. In this way, the detection efficiency is high and the detection quality is more guaranteed.

[0048] Among them, such as Figure 3 As shown in the figure, the multiple sealing structures may include multiple circumferential sealing structures 21 and a top sealing structure 22. The multiple circumferential sealing structures 21 are suitable for being set corresponding to the multiple circumferential side surfaces of the part to be detected, so as to seal the openings on the multiple circumferential side surfaces. The shape of the part to be detected may not be specifically limited, so the number of circumferential side surfaces is not specifically limited. For example, the circumferential side surfaces of the part to be detected may be 3, 4, 5 or more, so as to reasonably arrange the number and position of the circumferential sealing structures 21 according to the shape of the part to be detected; the top sealing structure 22 is suitable for being set corresponding to the top surface of the part to be detected, and is used to seal the top opening of the part to be detected. The transfer assembly 4 is used to lift the bottom of the part to be detected to support the part to be detected within the detection area. The transfer assembly 4, the circumferential blocking structure 21, and the top blocking structure 22 can be used to block the openings on each outer surface of the shell. When the openings on different parts to be inspected are located in different positions, different blocking structures can be used to block the openings, thereby enabling inspection of different shells, a wider inspection range, more flexible inspection, and more reliable inspection results. The blocking head on the top blocking structure 22 is set as the first blocking head 2233, and the blocking head on the circumferential blocking structure 21 is set as the second blocking head 212.

[0049] Preferably, combined Figure 3 and Figure 4As shown, the top sealing structure 22 includes a crimping block 221 and a top sealing block 222. The crimping block 221 is movably arranged on the frame 1, and the crimping block 221 has a movable stroke along the up and down directions of the frame 1; the top sealing block 222 is arranged at the bottom of the crimping block 221, and the crimping block 221 moves along the up and down directions of the frame 1, thereby driving the top sealing block 222 to move along the up and down directions of the frame 1 to block the top opening of the part to be inspected or away from the inspection area to wait for inspection; and a positioning portion 2211 is provided on the crimping block 221, and a matching portion 411 is provided on the transfer assembly 4. After the transfer assembly 4 transfers the part to be inspected into the inspection area, the positioning portion 2211 and the matching portion 411 cooperate to limit and fix the transfer assembly 4 in the inspection area to prevent the transfer assembly 4 from moving, thereby making the position of the part to be inspected more accurately fixed, making the blocking of the blocking structure smoother, and the blocking position alignment more precise.

[0050] Preferably, the part to be detected is arranged in a roughly square groove shape, with the notch of the part to be detected facing upward so that the top is open. The shape of the cross section of the top blocking block 222 is adapted to the shape of the notch of the part to be detected, so that the top blocking block 222 can better block the top notch of the part to be detected.

[0051] Preferably, if Figure 3 As shown in the figure, the positioning portion 2211 includes a plurality of positioning bosses 2211a protruding from the bottom of the crimping block 221, the transfer assembly 4 includes a transfer platform 41 movably provided on the frame 1, and the transfer platform 41 has a reciprocating movement stroke between the loading station and the detection area, and the matching portion 411 includes a plurality of positioning grooves 4111 provided on the transfer platform 41, and the plurality of positioning grooves 4111 are arranged in a one-to-one correspondence with the plurality of positioning bosses 2211a. When the plurality of positioning bosses 2211a are inserted into the corresponding plurality of positioning grooves 4111, the top blocking block 222 can be moved just to block the top notch of the part to be detected, which is easier to align and has a better blocking effect.

[0052] Of course, in other embodiments, the positioning boss 2211 a may be provided on the transfer platform 41 , and the positioning groove 4111 may be provided on the crimping block 221 , so that the crimping block 221 and the transfer platform 41 are positioned and matched.

[0053] Moreover, the implementation of the positioning portion 2211 and the matching portion 411 is not limited to the above-mentioned one. The positioning portion 2211 and the matching portion 411 can also be set as a hook and a buckle portion that fit together to form a corresponding fit. There are many setting methods, which will not be described here one by one.

[0054] Furthermore, a mounting groove 412 is provided on the transfer platform 41. The mounting groove 412 is suitable for accommodating the part to be tested. After the part to be tested is placed in the mounting groove 412, the openings on the peripheral side of the outer shell of the part to be tested are exposed outside the mounting groove 412, so that the plugging head can seal each opening accordingly during the airtightness test. Moreover, the shape of the mounting groove 412 is compatible with the shape of the part to be tested, so that the peripheral sidewalls of the mounting groove 412 can limit the peripheral side of the part to be tested, preventing the part to be tested from sliding easily, thereby facilitating the sealing of the openings on the part to be tested.

[0055] In addition, combined Figure 3 and Figure 4 As shown, the top sealing structure 22 also includes a lateral sealing component 223, which is located on one side of the crimping block 221 and on the side where the detection area is open. Since there is no sealing structure on the side where the detection area is open, when an opening is provided on the open side of the detection area corresponding to the part to be detected, it can be sealed by the lateral sealing component 223.

[0056] Preferably, if Figure 5 As shown in, the lateral blocking component 223 includes a support frame 2231, a connecting block 2232, a first blocking head 2233 and a first blocking head driving member, the support frame 2231 is connected to the frame 1 so as to be fixed to the frame 1; the connecting block 2232 is connected to the support frame 2231 so as to be arranged at the bottom of the support frame 2231; the first blocking head 2233 is slidably arranged on the connecting block 2232, and the first blocking head driving member is connected to the first blocking head 2233 for driving the first blocking head 2233 to slide relative to the connecting block 2232; wherein, a slide rail is provided on one of the connecting block 2232 and the first blocking head 2233, and a slider is provided on the other, The blocks slide together, so that the first blocking head 2233 is more stable when moving relative to the connecting block 2232, and, in the direction from the loading station to the detection area, the slide rail is arranged to be tilted downward along the frame 1, so that when the part to be detected moves into the detection area, the first blocking head 2233 can be driven by the first blocking head driving member to move downward along the frame 1, so that the first blocking head 2233 moves toward the opening on the part to be detected, so as to block the opening on the open side of the detection area corresponding to the part to be detected, so as to ensure that when openings are provided on all peripheral sides of the part to be detected, the part to be detected can be better completely blocked, the detection method is more flexible, and the detection result is more reliable.

[0057] The structures of the circumferential blocking structures 21 are roughly the same, and the positions of the blocking heads of the circumferential blocking structures 21 can be adaptively adjusted according to the different positions of the openings on the circumferential side surfaces of the test piece. Figure 6 and Figure 7As shown, each circumferential sealing structure 21 includes a mounting seat 211, a second sealing head 212 and a second sealing head driving member 213. The mounting seat 211 is arranged on the frame 1 to stand on one side of the detection area; the second sealing head 212 is slidably arranged on the mounting seat 211 and is located on the side of the mounting seat 211 facing the detection area; the second head driving member 213 is arranged on the mounting seat 211 and is connected to the second sealing head 212, and is used to drive the second sealing head 212 to switch between a sealing state and a state to be inspected, so that the second sealing head 212 can seal the opening on the circumferential side surface of the part to be inspected, and can be moved outside the detection area to prepare for inspection.

[0058] Furthermore, the second head driving member 213 includes a first driving member and a transmission member 2135 connected to the first driving member. The transmission member 2135 is connected to the second plugging head 212. The first driving member drives the transmission member 2135 to move back and forth to drive the second plugging head 212 to move into the detection area and away from the detection area. Through the transmission of the transmission member 2135, the second plugging head 212 is driven to move back and forth, making the movement of the second plugging head 212 easier to adjust.

[0059] Preferably, combined Figure 6 and Figure 7 As shown, the first driving component includes a first driving motor 2131, a first gear 2132 connected to the output shaft of the first driving motor 2131, a second gear 2133 meshing with the first gear 2132, and a screw rod 2134 connected to the second gear 2133. A nut meshing with the screw rod 2134 is provided on the transmission member 2135. The first driving motor 2131 drives the first gear 2132 to rotate, thereby driving the second gear 2133 to rotate, so as to drive the screw rod 2134 to rotate synchronously. Under the cooperation of the nut of the transmission member 2135 and the screw rod 2134, the transmission member 2135 is driven to move in a direction close to or away from the detection area. Through the screw rod and nut structure, the movement accuracy of the second sealing head 212 is higher and the working noise is smaller. Among them, the output shaft of the first drive motor 2131 is extended along the up and down directions of the frame 1, the first gear 2132 and the second gear 2133 are both set as helical gears, and the rotating shaft of the second gear 2133 is extended along the horizontal direction of the frame 1 to convert the rotation of the first drive motor 2131 into the linear movement of the second sealing head 212, making the structure more compact, thereby occupying less space, and making the airtightness detection device 100 smaller in size.

[0060] Among them, the mounting seat 211 is roughly "L"-shaped, and the transmission member 2135 includes a transmission block. One of the mounting seat 211 and the transmission block is provided with a slide rail, and the other is provided with a slider that slides with the slide rail. The slide rail extends in the horizontal direction of the frame 1, so that the transmission member 2135 is more stable when moving. A guide column is provided between the second plugging head 212 and the mounting seat 211. A guide cylinder is provided on the transmission member 2135, and the guide cylinder is slidably sleeved on the outside of the guide column. A pressure detection structure and a telescopic member are provided between the transmission member 2135 and the second plugging head 212. The transmission member 2135 is driven by the first driving component to gradually move closer to the second plugging head 212. When the telescopic member moves to abut against the second plugging head 212, a certain driving force is continuously applied to compress the telescopic member and apply a certain pressure to the second plugging head 212, so that the second plugging head 212 can block the opening on the part to be detected and keep it pressed against the opening to close the opening. Moreover, a pressure detection structure is arranged between the transmission member 2135 and the second sealing head 212. The pressure detection structure is set as a pressure sensor, which can detect the sealing pressure applied by the second sealing head 212. When the pressure value reaches a preset value, the transmission member 2135 can be controlled to stop moving to maintain it in a sealing state.

[0061] Among them, the position and shape of the second sealing head 212 of each circumferential sealing structure 21 can be adaptively adjusted according to the position and shape of the opening on the part to be tested. The second sealing head 212 may include a second sealing mounting plate and a detachable sealing plug provided on the second sealing mounting plate. A plurality of first mounting holes may be provided on the second sealing mounting plate, and a second mounting hole is provided on the sealing plug. Connectors (such as screws or bolts) are passed through the first mounting holes and the second mounting holes to fix the sealing plug on the second sealing mounting plate. Moreover, by connecting the second mounting holes with different first mounting holes, the position of the sealing plug can be adjusted. Moreover, the sealing plug is detachably provided on the second sealing mounting plate, so as to facilitate the replacement of sealing plugs of different shapes, thereby making the airtightness detection device 100 more applicable, so that different parts to be tested can be tested.

[0062] Moreover, each circumferential sealing structure 21 also includes a limiting structure 6, which includes a detection plate 61 provided on the transmission member 2135, and a photoelectric detector 62 provided on the mounting seat 211. The photoelectric detector 62 has a photoelectric detection area. When the detection plate moves together with the transmission member 2135 and moves into the photoelectric detection area, the photoelectric detector 62 is stimulated to send a detection signal, so that the first drive motor 2131 can be controlled to stop working through the photoelectric detector 62 to limit the moving stroke of the second sealing head 212.

[0063] The transfer assembly 4 is a drawer-like structure located on one side of the detection area. A slide rail is provided on one of the transfer platform 41 and the frame 1, and a slider that slidably cooperates with the slide rail is provided on the other to make the movement of the transfer platform 41 more stable.

[0064] It is understandable that if Figure 3 As shown in FIG, the airtightness testing device 100 further includes a detection mechanism 5, which can be used to detect whether the part to be tested is placed in place within the testing area. Specifically, the transfer assembly 4 also includes a blocking plate provided on the side of the moving platform facing away from the testing area. The blocking plate is provided with a detection portion 52, and the frame 1 is provided with a sensing portion 51. When the part to be tested is moved into place, the sensing portion 51 contacts the detection portion 52, thereby generating a detection signal to control the transfer platform 41 to stop moving and ensure that the part to be tested is moved into place.

[0065] As for the inflation component 3, the inflation component 3 is used to inflate air into the shell. The inflation component 3 may include an air pump and an inflation pipe connected to the air pump. The other end of the inflation pipe is connected to the inflation hole, so that an air flow can be formed by the air pump to enter the shell from the inflation hole through the inflation pipe. Preferably, inflation holes can be provided on multiple sealing heads so that the inflation component 3 can be connected to multiple inflation holes, thereby increasing the inflation rate. It can be understood that if the shell is sealed by each sealing structure and the air tightness of the shell is good, then after a period of inflation, the air pressure value in the shell will gradually increase to reach the preset value within the preset time; if the shell leaks, the air pressure growth rate will be slow or will not reach the preset value. Of course, the inflation component 2 may also include multiple electromagnetic regulating valves, and the multiple electromagnetic regulating valves can be used to control the switching of each air path. Preferably, the inflation component 3 and the pressure detection component can both be set as part of a leak detector, which can detect the difference between the inflation volume and the detection pressure value to determine the air tightness of the shell. The working principle of the leak detector is traditional technology and will not be explained in detail here.

[0066] Furthermore, the airtightness testing device 100 can include multiple sealing assemblies 2, allowing for simultaneous testing of multiple test components, significantly improving testing efficiency. Correspondingly, multiple inflating assemblies 3, transfer assemblies 4, and pressure detection components can also be provided. Alternatively, multiple sealing assemblies 2 can share a single inflating assembly 3, allowing for control of inflation within each sealing assembly 2 through control valves, resulting in a simpler structure.

[0067] Obviously, the embodiments described above are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, those skilled in the art may make other different forms of changes or modifications without making any creative work, and all of these should fall within the scope of protection of the present invention.

Claims

1. An airtightness testing device, suitable for performing airtightness testing on a to-be-tested part, wherein the to-be-tested part comprises a housing and a plurality of openings provided on the outer circumference of the housing, wherein the plurality of openings are interconnected, and wherein: The airtightness detection device comprises: A frame, wherein a loading station is provided on one side of the frame; A blocking assembly is provided on the frame, the blocking assembly comprising a plurality of blocking structures, the plurality of blocking structures collectively enclosing a detection area, at least one side of the detection area being open, the loading station being provided corresponding to the open side of the detection area; each of the blocking structures comprises a blocking head, each of the blocking heads having a blocking state close to the detection area for blocking an opening on the to-be-detected component, and a to-be-detected state away from the detection area, wherein at least one of the blocking heads is provided with an inflation hole; The plurality of blocking structures further include a top blocking structure, the top blocking structure being adapted to be arranged corresponding to the top surface of the part to be detected, the top blocking structure comprising a crimping block and a top blocking block, the crimping block being movably arranged on the frame and having a movable stroke in the up and down direction of the frame; the top blocking block being arranged at the bottom of the crimping block; The top blocking structure further includes a lateral blocking component, which is located on one side of the crimping block and corresponds to the side of the detection area that is open; the lateral blocking component includes a support frame, a connecting block, a first blocking head and a first blocking head driving member, the support frame is connected to the frame; the connecting block is connected to the support frame; the first blocking head is slidably arranged on the connecting block; the first blocking head driving member is connected to the first blocking head; The plurality of blocking structures include a plurality of circumferential blocking structures, and the plurality of circumferential blocking structures are suitable for being arranged corresponding to the plurality of circumferential side surfaces of the component to be detected, and each of the circumferential blocking structures includes a second blocking head, and the second blocking head includes a second blocking mounting plate and a detachable blocking plug arranged on the second blocking mounting plate, the second blocking mounting plate is provided with a plurality of first mounting holes, and the blocking plug is provided with a second mounting hole, and a connecting member is passed through the first mounting hole and the second mounting hole to fix the blocking plug to the second blocking mounting plate; an inflatable component, disposed on the frame, the inflatable component being in communication with the blocking head provided with the inflatable hole, and being used for inflating air into the shell; A transfer assembly, movably disposed on the frame, for reciprocatingly moving the workpiece to be inspected between the loading station and the inspection area, wherein the transfer assembly is adapted to be lifted at the bottom of the workpiece to be inspected; The pressure detection component is used to detect the air pressure value in the shell.

2. The airtightness detection device according to claim 1, characterized in that: The crimping block is provided with a positioning portion, and the transfer assembly is provided with a matching portion. After the transfer assembly transfers the part to be inspected into the inspection area, the positioning portion and the matching portion cooperate to limit and fix the transfer assembly in the inspection area.

3. The airtightness detection device according to claim 2, characterized in that: The positioning portion includes a plurality of positioning bosses protruding from the bottom of the crimping block; The transfer assembly includes a transfer platform movably arranged on the frame, and the transfer platform has a reciprocating movement stroke between the loading station and the detection area. The matching part includes a plurality of positioning grooves arranged on the transfer platform, and the plurality of positioning grooves are arranged in a one-to-one correspondence with the plurality of positioning bosses.

4. The airtightness detection device according to claim 3, characterized in that: The transfer platform is provided with a mounting groove, which is suitable for accommodating the to-be-detected component therein, and allows the openings on the peripheral side of the shell of the to-be-detected component to be exposed outside the mounting groove.

5. The airtightness detection device according to claim 1, characterized in that: One of the connecting block and the first plugging head is provided with a slide rail, and the other is provided with a slider, and in the direction from the loading station toward the detection area, the slide rail is arranged to be tilted downward along the frame.

6. The airtightness detection device according to claim 1, characterized in that: Each of the circumferential blocking structures further includes: A mounting base, provided on the frame; The second plugging head is slidably mounted on the mounting seat and is located on one side of the detection area; The second sealing head driving member is provided on the mounting seat and connected to the second sealing head, and is used for driving the second sealing head to switch between the sealing state and the waiting-for-inspection state.

7. The airtightness detection device according to claim 6, characterized in that: The second sealing head driving member includes a first driving member and a transmission member connected to the first driving member. The transmission member is connected to the second sealing head. The first driving member drives the transmission member to move back and forth to drive the second sealing head to be within the detection area and away from the detection area.

8. The airtightness detection device according to claim 7, characterized in that: The first driving component includes a first driving motor, a first gear connected to the output shaft of the first driving motor, a second gear meshing with the first gear, and a screw connected to the second gear. The transmission member is provided with a nut meshing with the screw. The first driving motor drives the first gear to rotate, drives the second gear to rotate, and drives the screw to rotate. Under the cooperation of the nut and the screw of the transmission member, the transmission member is driven to move in a direction close to or away from the detection area.

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