阅读说明：本技术 气压测漏装置 (Air pressure leak detection device ) 是由 叶伟炳 邓彬 于 2020-04-07 设计创作，主要内容包括：本申请涉及气压测漏装置。所述气压测漏装置包括检测结构、充气控制箱、气压检测仪、充气管及连接气管；检测结构固定待检测件；充气控制箱通过充气管连接待检测件的充气通口；气压检测仪通过连接气管连接待检测件的检测通口。不仅适用于压铸件的密封性检测,而且适用于大量的需要进行密封性检测其他结构；一方面有利于快速高效地检测大量待检测件的密封性；另一方面采用空气而无需用水,因此有利于保护待检测件,亦避免了多余的烘干或晾干工序；再一方面无需拆装即可进行整体的密封性检测,有利于节省工序且避免拆装返修会生产不良品报废和其它的零件损坏；又一方面由于采用了检测结构的设计,因此有利于匹配各种不同形状大小的待检测件。(The present application relates to an air pressure leak detection device. The air pressure leakage detection device comprises a detection structure, an inflation control box, an air pressure detector, an inflation pipe and a connecting air pipe; the detection structure fixes the piece to be detected; the inflation control box is connected with an inflation port of the piece to be detected through an inflation pipe; the air pressure detector is connected with the detection port of the piece to be detected through the connecting air pipe. The method is suitable for detecting the sealing property of the die casting, and is also suitable for detecting other structures needing sealing property; on one hand, the method is favorable for rapidly and efficiently detecting the sealing performance of a large number of pieces to be detected; on the other hand, air is adopted without water, so that the protection of the to-be-detected piece is facilitated, and the redundant drying or airing process is avoided; on the other hand, the whole sealing performance detection can be carried out without disassembly and assembly, so that the working procedures are saved, and the production of scrapped defective products and other part damages caused by disassembly and assembly and repair are avoided; in another aspect, the design of the detection structure is adopted, so that the detection structure is beneficial to matching with the to-be-detected pieces with different shapes and sizes.)

1. An air pressure leakage detection device is characterized by comprising a detection structure, an inflation control box, an air pressure detector, an inflation tube and a connecting air tube;

the detection structure is used for fixing the piece to be detected;

the inflation control box is used for being connected with the inflation port of the piece to be detected through the inflation pipe;

the air pressure detector is used for being connected with the detection port of the piece to be detected through the connecting air pipe.

2. The air pressure leakage detecting device according to claim 1, wherein the inflation control box and the air pressure detector are fixed to the detecting structure respectively, or the inflation control box and the air pressure detector are fixed beside the detecting structure respectively.

3. The air pressure leak detection device according to claim 1, wherein the detection structure is provided with a base, a cylinder support, a first cylinder and a second cylinder;

the cylinder support is fixedly arranged on the base, and the first cylinder and the second cylinder are respectively and fixedly arranged on the cylinder support or beside the cylinder support;

the first cylinder and the second cylinder are matched with the base together to fix the to-be-detected piece and the end part, connected with the inflation port, of the inflation tube; or the first cylinder is matched with the base to fix the piece to be detected, and the second cylinder is matched with the base to fix the end part, connected with the inflation port, of the inflation tube.

4. The air pressure leakage detecting device according to claim 3, wherein the cylinder support includes a first support plate, a second support plate and a third support plate connected in sequence, and the first support plate and the third support plate are respectively and fixedly disposed on the base;

the first cylinder and the second cylinder are respectively and fixedly arranged on at least one of the first support plate, the second support plate and the third support plate.

5. The air pressure leak detection device according to claim 4, wherein the output directions of the first air cylinder and the second air cylinder are arranged in parallel.

6. The air pressure leakage detecting device according to claim 5, wherein the first cylinder is connected with a first fixing member in a driving manner, the second cylinder is connected with a second fixing member in a driving manner, and the first fixing member and the second fixing member cooperate with the base to fix the to-be-detected member and the end portion of the inflation tube, which is connected with the inflation port; or the first fixing piece is matched with the base to fix the piece to be detected, and the second fixing piece is matched with the base to fix the end part, connected with the inflation port, of the inflation tube.

7. The air pressure leak detection device according to claim 6, wherein the first fixing member and the second fixing member are each a plate-like structure.

8. The air pressure leak hunting device according to claim 7, wherein the first fixing member and the second fixing member are disposed in parallel.

9. The air pressure leak detection device according to any one of claims 1 to 8, further comprising the member to be detected.

10. The air pressure leak detection device according to claim 9, wherein the member to be detected is a die-cast member, or the inflation port and the detection port are provided in communication, or the inflation port and the detection port integrally penetrate the member to be detected, or the inflation port and the detection port respectively serve as connection holes.

Technical Field

The application relates to an air pressure leakage detection technology, in particular to an air pressure leakage detection device.

Background

Due to process restriction, a large number of small sand holes exist in the interior of the conventional die casting product, and for the product with the sealing requirement, the sealing requirement cannot be met due to the fact that seepage and water leakage are easy to occur after the surface of the product is machined and broken.

Therefore, generally, the sealing property of the cast product is detected by sealing the aerated water with a jig before assembly or by detecting the sealing property in the entire water discharge after assembly, and the defective product of the detected water leakage and permeation is subjected to impregnation treatment and can be used as a good product after the impregnation treatment.

The method for detecting the sealing performance of the common die casting is described as follows:

1. detect the gas tightness in discharging water with sealed aerifing before the equipment, through seeing whether there is the bubble to emerge visually, judge through the manual work and probably make mistakes, the product surface can be stained with water and need dry.

2. The whole leakproofness of detecting in draining after assembling is also whether having the bubble to emit through looking over visually, probably makes mistakes through artifical judgement, and the product surface can be stained with water and need be dried, and the defective products need be torn open the part and is changed moreover, and the process can the dismouting reprocess can produce the defective products and scrap and other part damages.

Disclosure of Invention

In view of the above, it is necessary to provide an air pressure leakage detecting device.

An air pressure leak detection device comprises a detection structure, an inflation control box, an air pressure detector, an inflation tube and a connecting air tube; the detection structure is used for fixing the piece to be detected; the inflation control box is used for being connected with the inflation port of the piece to be detected through the inflation pipe; the air pressure detector is used for being connected with the detection port of the piece to be detected through the connecting air pipe.

The air pressure leakage detection device is not only suitable for detecting the sealing property of the die casting, but also suitable for detecting other structures needing sealing property in a large quantity; on one hand, the method is favorable for rapidly and efficiently detecting the sealing performance of a large number of pieces to be detected; on the other hand, air is adopted without water, so that the protection of the to-be-detected piece is facilitated, and the redundant drying or airing process is avoided; on the other hand, the whole sealing performance detection can be carried out without disassembly and assembly, so that the working procedures are saved, and the production of scrapped defective products and other part damages caused by disassembly and assembly and repair are avoided; in another aspect, the design of the detection structure is adopted, so that the detection structure is beneficial to matching with the to-be-detected pieces with different shapes and sizes.

In one embodiment, the inflation control box and the air pressure detector are respectively fixed on the detection structure, or the inflation control box and the air pressure detector are respectively fixed beside the detection structure.

In one embodiment, the detection structure is provided with a base, a cylinder bracket, a first cylinder and a second cylinder; the cylinder support is fixedly arranged on the base, and the first cylinder and the second cylinder are respectively and fixedly arranged on the cylinder support or beside the cylinder support; the first cylinder and the second cylinder are matched with the base together to fix the to-be-detected piece and the end part, connected with the inflation port, of the inflation tube; or the first cylinder is matched with the base to fix the piece to be detected, and the second cylinder is matched with the base to fix the end part, connected with the inflation port, of the inflation tube.

In one embodiment, the cylinder support comprises a first support plate, a second support plate and a third support plate which are sequentially connected, and the first support plate and the third support plate are respectively and fixedly arranged on the base; the first cylinder and the second cylinder are respectively and fixedly arranged on at least one of the first support plate, the second support plate and the third support plate.

In one embodiment, the output directions of the first cylinder and the second cylinder are arranged in parallel.

In one embodiment, the first cylinder is connected with a first fixing piece in a driving manner, the second cylinder is connected with a second fixing piece in a driving manner, and the first fixing piece and the second fixing piece are matched with the base together to fix the to-be-detected piece and the end part of the inflation pipe, which is connected with the inflation port; or the first fixing piece is matched with the base to fix the piece to be detected, and the second fixing piece is matched with the base to fix the end part, connected with the inflation port, of the inflation tube.

In one embodiment, the first fixing member and the second fixing member are both plate-shaped structures.

In one embodiment, the first fixing member and the second fixing member are arranged in parallel.

In one embodiment, the air pressure leakage detection device further comprises the to-be-detected piece.

In one embodiment, the to-be-detected part is a die-cast part, or the inflation port and the detection port are communicated, or the inflation port and the detection port integrally penetrate through the to-be-detected part, or the inflation port and the detection port respectively serve as connecting holes.

Drawings

FIG. 1 is a schematic view of an embodiment of the present application with a member to be inspected. Fig. 2 is another schematic view of the embodiment shown in fig. 1. FIG. 3 is a schematic sectional view taken along the line A-A of the embodiment shown in FIG. 2. Fig. 4 is an enlarged schematic view of the embodiment shown in fig. 3 at B. Fig. 5 is an enlarged schematic view of the member to be detected of the embodiment shown in fig. 1. Fig. 6 is another schematic view of the embodiment shown in fig. 5. Fig. 7 is another schematic view of the embodiment of fig. 1. Fig. 8 is another schematic view of the embodiment of fig. 1. FIG. 9 is a schematic cross-sectional view in the direction C-C of the embodiment shown in FIG. 8. Fig. 10 is a schematic cross-sectional view along the direction D-D of the embodiment shown in fig. 8. FIG. 11 is another schematic view of the embodiment of FIG. 1. FIG. 12 is a schematic cross-sectional view taken in the direction E-E of the embodiment shown in FIG. 11. Fig. 13 is an enlarged schematic view at F of the embodiment shown in fig. 12.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying 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. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

One embodiment of the application is that the air pressure leakage detection device comprises a detection structure, an inflation control box, an air pressure detector, an inflation pipe and a connecting air pipe; the detection structure is used for fixing the piece to be detected; the inflation control box is used for connecting an inflation port of the piece to be detected through an inflation pipe; the air pressure detector is used for connecting a detection port of the piece to be detected through a connecting air pipe. The air pressure leakage detection device is not only suitable for detecting the sealing property of the die casting, but also suitable for detecting other structures needing sealing property in a large quantity; on one hand, the method is favorable for rapidly and efficiently detecting the sealing performance of a large number of pieces to be detected; on the other hand, air is adopted without water, so that the protection of the to-be-detected piece is facilitated, and the redundant drying or airing process is avoided; on the other hand, the whole sealing performance detection can be carried out without disassembly and assembly, so that the working procedures are saved, and the production of scrapped defective products and other part damages caused by disassembly and assembly and repair are avoided; in another aspect, the design of the detection structure is adopted, so that the detection structure is beneficial to matching with the to-be-detected pieces with different shapes and sizes. In one embodiment, the air pressure leakage detection device comprises a part of or the whole structure of the following embodiments; that is, the air pressure leak detection device includes some or all of the following technical features. In one embodiment, the air pressure leakage detection device comprises a detection structure, an inflation control box, an air pressure detector, an inflation tube and a connecting air tube. The air pressure leakage detection device is suitable for accurate detection of a piece to be detected and effective detection of a large number of pieces to be detected, so that large-scale quick detection of the piece to be detected is facilitated. As shown in fig. 8, in one embodiment, an air pressure leak detection device includes a detection structure 100, an inflation control box 110, an air pressure detector 120, an inflation tube 130 and a connecting air tube 140; the detection structure 100 is used for fixing the piece to be detected 999; the inflation control box 110 is used for connecting the inflation port 901 of the piece to be detected 999 through the inflation tube 130; the air pressure detector 120 is used for connecting the detection port 902 of the to-be-detected piece 999 through the connecting air pipe 140.

In one embodiment, the inflation control box is used for connecting an inflation port of the piece to be detected through an inflation pipe; in one embodiment, the air pressure detector is used for connecting the detection port of the piece to be detected through the connecting air pipe. In one embodiment, the inflation control box and the air pressure detector are fixed on the detection structure respectively, or in one embodiment, the inflation control box and the air pressure detector are fixed beside the detection structure respectively. Further, in one embodiment, the operation surfaces of the inflation control box and the air pressure detector are located in the same direction, and in one embodiment, the display surfaces of the inflation control box and the air pressure detector are located in the same direction, so that the inflation control box and the air pressure detector can be conveniently controlled and observed by an operator. In one embodiment, the detection structure is used for fixing the piece to be detected; in one embodiment, the detection structure is provided with a base, a cylinder bracket, a first cylinder and a second cylinder; the cylinder support is fixedly arranged on the base, and the first cylinder and the second cylinder are respectively and fixedly arranged on the cylinder support or beside the cylinder support; the first cylinder and the second cylinder are matched with the base together to fix the end parts, connected with the inflation port, of the piece to be detected and the inflation tube. Namely, the air pressure leakage detection device comprises a detection structure, an inflation control box, an air pressure detector, an inflation pipe and a connecting air pipe; the detection structure is used for fixing the piece to be detected; the inflation control box is used for connecting an inflation port of the piece to be detected through an inflation pipe; the air pressure detector is used for connecting the detection port of the piece to be detected through the connecting air pipe; the detection structure is provided with a base, a cylinder bracket, a first cylinder and a second cylinder; the cylinder support is fixedly arranged on the base, and the first cylinder and the second cylinder are respectively and fixedly arranged on the cylinder support or beside the cylinder support; the first cylinder and the second cylinder are matched with the base together to fix the end parts, connected with the inflation port, of the piece to be detected and the inflation tube. The rest of the embodiments are analogized and are not described in detail. Alternatively, in one embodiment, the detection structure is used for fixing the member to be detected; in one embodiment, the detection structure is provided with a base, a cylinder bracket, a first cylinder and a second cylinder; the cylinder support is fixedly arranged on the base, and the first cylinder and the second cylinder are respectively and fixedly arranged on the cylinder support or beside the cylinder support; the first cylinder is matched with the base to fix the piece to be detected and the second cylinder is matched with the base to fix the end part of the inflation tube, which is connected with the inflation port. Further, in one of the embodiments, the base is plate-shaped, and in one of the embodiments, the detecting structure is provided with a base plate. Further, in one embodiment, the base is concavely provided with a groove body, and the piece to be detected is placed on the groove body. Further, in one embodiment, the groove body is matched with the piece to be detected, and the design is favorable for quickly positioning and placing the piece to be detected. Or, in one embodiment, two adjacent sides of the groove body are respectively provided with the abutting baffles and the driving structures thereof, each driving structure drives the corresponding abutting baffle, and the two abutting baffles are respectively driven by the corresponding driving structures to be matched with the groove body to fix the piece to be detected. The design is favorable for fixing the piece to be detected from the bottom surface direction. Further, in one embodiment, the base is provided with a slot hole penetrating through the base, and the connecting air pipe is used for penetrating through the slot hole and connecting with the detection through hole of the piece to be detected. Namely, the air pressure detector is used for connecting the detection port of the piece to be detected through the connecting air pipe passing through the slotted hole. Further, in one of the embodiments, the base is provided with a channel, the extending direction of the channel is parallel to the extending direction of the base, and the connecting air pipe is used for penetrating through the channel and connecting with the detection through opening of the piece to be detected. Further, in one embodiment, the base is provided with a fixing clip in the slot or the channel, and the fixing clip is used for clamping the connecting air pipe so as to prevent the connecting air pipe from loosening to influence the accuracy of air pressure detection. Such design is favorable to placing the connecting gas pipe, avoids removing and influences the atmospheric pressure and detects. Further, in one embodiment, the base is provided with a rubber ring for sealing and connecting with the air pipe. In one embodiment, the rubber ring is a rubber ring, a waterproof rubber ring or a waterproof sealing rubber ring. Furthermore, cooperation inflation control box and atmospheric pressure detector are fixed in respectively and detect structural or detect the structure by side, then connect the trachea and need not worry because remove and loosen and take off, are favorable to guaranteeing the accuracy nature that atmospheric pressure detected on the one hand, and on the other hand is favorable to promoting the life who connects the trachea.

Further, in one embodiment, the air pressure leakage detecting device further comprises a clamp fixedly arranged on the base, and the clamp is used for fixing the piece to be detected. In one embodiment, the number of clamps is two. In one embodiment, the number of clamps is plural. In one embodiment, the plurality of clamps are uniformly distributed on the edge position of the base. In one embodiment, a clamp includes a body, a jaw member, a drive mechanism, and a pull rod. The chuck piece is connected with the body. The driving mechanism is arranged on the body, and the power output end of the driving mechanism is connected with the pull rod. The pull rod penetrates through the chuck piece and is connected with the chuck piece in a sliding mode. In one embodiment, the clamp comprises a body, a clamp head piece, a driving mechanism and a pull rod; the clamping head piece comprises a clamping piece main body and a plurality of clamping parts, the clamping piece main body is connected with the clamping piece main body, a first clearance hole is formed in the clamping piece main body, the clamping parts are all connected with the clamping piece main body, the clamping parts are distributed at intervals along the circumferential direction of the clamping piece main body, the clamping parts jointly surround to form a sliding hole and a groove which are communicated, the groove is communicated with the first clearance hole through the sliding hole, a gap exists between every two adjacent clamping parts, and the gap is respectively communicated with the sliding hole and the groove; the driving mechanism is arranged on the body; the pull rod penetrates through the first clearance hole and the sliding hole, one end of the pull rod is connected with the power output end of the driving mechanism, the other end of the pull rod is located in the groove, and the cross sectional area of the end portion, far away from the power output end of the driving mechanism, of the pull rod is larger than that of the sliding hole. Such design, when the pull rod slides for the body, the pull rod slides for chuck spare simultaneously, the pull rod slides in first clearance hole and slide opening like this, because the other end of pull rod is located the recess, the tip of pull rod slides in the slide opening from the recess, again because the tip cross-sectional area of keeping away from actuating mechanism's the power take off end of pull rod is greater than the cross-sectional area of slide opening, in addition there is the gap between two adjacent clamping parts, and the gap communicates with slide opening and recess respectively, can open between two adjacent clamping parts, make the pull rod prop open a plurality of clamping parts simultaneously when sliding towards first clearance hole direction in the slide opening, thereby make the product centre gripping between a plurality of clamping parts, realize the function of anchor clamps centre gripping product. It can be understood that the pull rod slides to different positions relative to the body, and the opening angles of the clamping parts of the clamping head piece are different, so that mesh products with different diameters can be adapted. In one embodiment, the collet piece includes a collet body and a plurality of gripping portions. The main body of the clamping piece is connected with the body, so that the clamping piece is connected with the body. The clamp main body is provided with a first clearance hole. The clamping parts are connected with the clamping piece main body and are distributed at intervals along the circumferential direction of the clamping piece main body. The clamping parts are surrounded into a sliding hole and a groove which are communicated with each other, and the groove is communicated with the first clearance hole through the sliding hole. A gap exists between every two adjacent clamping parts, and the gap is communicated with the sliding hole and the groove respectively. In this embodiment, the clip member is a columnar structure, the plurality of clamping portions are distributed at intervals along the circumferential direction of the clip member main body, and a gap exists between two adjacent clamping portions. In one embodiment, the drive mechanism is provided on the body. The pull rod penetrates through the first clearance hole and the sliding hole. One end of the pull rod is connected with the power output end of the driving mechanism, and the other end of the pull rod is positioned in the groove. The cross-sectional area of the end of the pull rod far away from the power output end of the driving mechanism is larger than that of the slide hole. In this embodiment, a first end of the pull rod is connected with the power output end of the driving mechanism, a second end of the pull rod is located in the groove, and the cross-sectional area of the end portion of the second end of the pull rod is larger than that of the slide hole. When the second end of the pull rod is driven by the driving mechanism to slide towards the body, the second end of the pull rod slides into the sliding hole from the groove, and the cross sectional area of the end part of the second end of the pull rod is larger than that of the sliding hole, so that the second end of the pull rod can open the plurality of clamping parts, and the gap between every two adjacent clamping parts is gradually increased, so that the chuck piece can be opened to a preset angle, and the clamp can clamp a product. In one embodiment, the drive mechanism comprises a cylinder drive mechanism or a motor drive mechanism or a hydraulic cylinder drive mechanism. In order to make the driving mechanism better drive the pull rod to slide and make the structure of the driving mechanism simpler, in one embodiment, the driving mechanism is a cylinder driving mechanism, so that the driving mechanism better drives the pull rod to slide and the structure of the driving mechanism is simpler.

In order to better arrange the driving mechanism on the body, in one embodiment, the body is provided with a second clearance hole, and the second clearance hole is communicated with the first clearance hole. The pull rod penetrates through the second clearance hole and moves relative to the body, so that the driving mechanism is better arranged on the body. In order to make the structure of the clamp more compact, in one embodiment, the body is provided with a holding groove communicated with the second clearance hole. The driving mechanism is positioned in the accommodating groove, so that the driving mechanism is better arranged on the body, the space of the body occupied by the driving mechanism is reduced, and the structure of the clamp is more compact. In this embodiment, the driving mechanism is located in the accommodating groove, so that the driving mechanism is accommodated in the body, and the space occupied by the driving mechanism is reduced, thereby making the structure of the clamp more compact. In one embodiment, a clamp includes a body, a jaw member, a drive mechanism, and a pull rod. The chuck piece is connected with the body. The collet piece includes a collet body and a plurality of gripping portions. The main body of the clamping piece is connected with the body, so that the clamping piece is connected with the body. The clamp main body is provided with a first clearance hole. The clamping parts are connected with the clamping piece main body and are distributed at intervals along the circumferential direction of the clamping piece main body. The clamping parts are surrounded into a sliding hole and a groove which are communicated with each other, and the groove is communicated with the first clearance hole through the sliding hole. A gap exists between every two adjacent clamping parts, and the gap is communicated with the sliding hole and the groove respectively. The driving mechanism is arranged on the body. The pull rod penetrates through the first clearance hole and the sliding hole. One end of the pull rod is connected with the power output end of the driving mechanism, and the other end of the pull rod is positioned in the groove. The cross-sectional area of the end of the pull rod far away from the power output end of the driving mechanism is larger than that of the slide hole. When the pull rod slides relative to the body, the pull rod slides relative to the chuck piece, so that the pull rod slides in the first clearance hole and the sliding hole, the other end of the pull rod is positioned in the groove, the end part of the pull rod slides into the sliding hole from the groove, and the cross section area of the end part of the pull rod, which is far away from the power output end of the driving mechanism, is larger than that of the sliding hole. The body is provided with a second clearance hole and a holding tank communicated with the second clearance hole. The pull rod penetrates through the second clearance hole and moves relative to the body, so that the driving mechanism is better arranged on the body. The driving mechanism is located in the accommodating groove, the driving mechanism is well arranged on the body, the space of the body occupied by the driving mechanism is reduced, the structure of the clamp is further compact, and the second clearance hole is communicated with the first clearance hole. In order to securely mount the drive mechanism to the body, in one embodiment the clamp further comprises a fixing member. First mounting hole has been seted up to actuating mechanism, and the body is seted up the second mounting hole with the holding tank intercommunication. The fixing piece is respectively arranged in the first mounting hole and the second mounting hole in a penetrating mode, so that the driving mechanism is reliably mounted on the body. In this embodiment, the drive mechanism includes a housing having a cavity formed therein, a drive source assembly partially disposed within the cavity and coupled to the housing, and a power rod. The power rod is respectively connected with the power end of the driving source component and the pull rod, so that the pull rod is connected with the power output end of the driving mechanism. The first mounting hole is formed in the shell, so that the driving mechanism is provided with the first mounting hole, and the fixing piece is fixed on the body through the first mounting hole. In this embodiment, the drive source assembly is a pneumatic source assembly. In one embodiment, the fastener is a bolt or a screw. The second mounting hole is a screw hole, so that the fixing piece reliably fixes the driving mechanism on the body. In this embodiment, the fixing member is a bolt. It will be appreciated that in other embodiments, the fixing may be omitted. The shell is connected to the body by welding or gluing. In order to securely connect the clip body to the body, in one embodiment, the collet member further includes a locking member. The clamping piece main body is provided with a through hole, the body is provided with a connecting hole, and the locking piece is respectively arranged in the through hole and the connecting hole in a penetrating manner, so that the clamping piece main body is reliably connected with the body. In order to improve the reliability of the connection of the clamp main body, in one embodiment, the locking member is a bolt or a screw. The connecting hole is the screw, makes the retaining member pass through folder main part and body coupling to make the retaining member be fixed in the body with folder main part spiro union, improved the reliability that the folder main part is connected. In this embodiment, the retaining member is a bolt. In order to reliably connect the main body of the clamp and the body, in one embodiment, the body is further provided with a positioning groove communicated with the connecting hole. The main body of the clamping piece is positioned in the positioning groove and connected with the body, so that the main body of the clamping piece and the body are quickly positioned, and the main body of the clamping piece and the body are reliably connected. In this embodiment, the positioning groove is an annular groove structure, so that the problem that the clamp main body is easy to move relative to the body is avoided, and the clamp main body is positioned on the body better. In order to make the structure of the clamp more compact, in one embodiment, the clamp main body and the plurality of clamping parts are integrally formed, so that the structure of the clamp head piece is more compact, and the structure of the clamp is more compact. It is understood that in other embodiments, the clip main body and the plurality of clamping portions may be formed separately and connected together by welding or gluing, so that the clip main body is securely connected to the plurality of clamping portions. In order to enable the clamp to be uniformly clamped at the periphery of the product, in one embodiment, the gaps between any two adjacent clamping portions are equal, so that the opening angle of each clamping portion relative to the clamp body is uniform, and the clamp is uniformly clamped at the periphery of the product. In order to clamp the product between the plurality of clamping parts, in one embodiment, the pull rod comprises a pull rod body and a pushing-away part. The pull rod body penetrates through the first clearance hole and the sliding hole. One end of the pull rod body is connected with the power output end of the driving mechanism, and the other end of the pull rod body is connected with the push-away part. The cross-sectional area of the pull rod body is smaller than or equal to that of the slide hole. The push-away part is positioned in the groove, and the cross-sectional area of the push-away part is larger than that of the sliding hole. When the driving mechanism drives the pull rod body to slide in the sliding hole towards the first clearance hole, the pull rod body drives the push-away part to slide into the sliding hole from the groove, and the cross section area of the push-away part is larger than that of the sliding hole, so that the push-away part slides into the sliding hole and simultaneously props up the plurality of clamping parts, the pull rod is made to simultaneously prop up the plurality of clamping parts when sliding in the sliding hole towards the first clearance hole, and a product is clamped between the plurality of clamping parts. In one embodiment, the pull rod body and the push-away part are integrally formed, so that the structure of the pull rod is more compact. It is understood that in other embodiments, the pull rod body and the push-away portion may be formed separately and connected to each other by welding or gluing, so that the push rod body and the push-away portion are connected. In order to prolong the service life of the clamp, in one embodiment, the part of the push-away part, which is adjacent to the pull rod body, is provided with a conical stopping surface. The groove is matched with the conical stopping surface, so that the plurality of clamping parts are gradually propped open in the process that the push-open part slides into the sliding hole from the groove, the problem that the push-open part is too large in resistance in the process of propping open the plurality of clamping parts is solved, the impact on the push-open part in the process of propping open the plurality of clamping parts is reduced, and the service life of the clamp is prolonged. In one embodiment, the pushrod body is cylindrical. The push-away part is frustum-shaped, a part of the push-away part, which is adjacent to the pull rod body, is provided with a conical stopping surface, and the cross-sectional area of the end part of the push-away part, which is connected with the push rod body, is smaller than that of the end part of the push-away part, which is far away from the push rod body. The cross sectional area of the end part of the push-away part connected with the push rod body is equal to that of the push rod body. The cross-sectional area of the sliding hole is smaller than that of the end part of the push-away part far away from the push rod body, so that the push-away part can prop up the clamping part when sliding into the sliding hole from the groove. The push-away part is frustum-shaped, so that the push-away part slides to different positions in the sliding hole to prop the clamping part to different angles, and the angle of the clamping part is gradually increased. In one embodiment, a clamp includes a body, a jaw member, a drive mechanism, a pull rod, and a retaining member. The collet piece includes a collet body and a plurality of gripping portions. The body is provided with a connecting hole and a positioning groove communicated with the connecting hole, and the clamp main body is positioned in the positioning groove and connected with the body, so that the clamp main body is quickly positioned and connected with the body. The clamp main body is provided with a through hole and a first clearance hole. The locking piece is respectively arranged in the through hole and the connecting hole in a penetrating way, so that the clamp main body is reliably connected with the body. The clamping parts are connected with the clamping piece main body and are distributed at intervals along the circumferential direction of the clamping piece main body. The clamping parts are surrounded into a sliding hole and a groove which are communicated with each other, and the groove is communicated with the first clearance hole through the sliding hole. A gap exists between every two adjacent clamping parts, and the gap is communicated with the sliding hole and the groove respectively. The driving mechanism is arranged on the body. The pull rod penetrates through the first clearance hole and the sliding hole. One end of the pull rod is connected with the power output end of the driving mechanism, and the other end of the pull rod is positioned in the groove. The cross-sectional area of the end of the pull rod far away from the power output end of the driving mechanism is larger than that of the slide hole. When the pull rod slides relative to the body, the pull rod slides relative to the chuck piece, so that the pull rod slides in the first clearance hole and the sliding hole, the other end of the pull rod is positioned in the groove, the end part of the pull rod slides into the sliding hole from the groove, and the cross section area of the end part of the pull rod, which is far away from the power output end of the driving mechanism, is larger than that of the sliding hole. Gaps between any two adjacent clamping parts are equal, so that the opening angle of each clamping part relative to the clamping part main body is uniform, and the clamp is uniformly clamped at the periphery of a product. The body is provided with a second clearance hole and a holding tank communicated with the second clearance hole. The pull rod penetrates through the second clearance hole and moves relative to the body, so that the driving mechanism is better arranged on the body. The driving mechanism is located in the accommodating groove, the driving mechanism is well arranged on the body, the space of the body occupied by the driving mechanism is reduced, the structure of the clamp is further compact, and the second clearance hole is communicated with the first clearance hole. In one embodiment, a clamp includes a body, a jaw member, a drive mechanism, a pull rod, and a retaining member. The collet piece includes a collet body and a plurality of gripping portions. The body is provided with a connecting hole and a positioning groove communicated with the connecting hole, and the clamp main body is positioned in the positioning groove and connected with the body, so that the clamp main body is quickly positioned and connected with the body. The clamp main body is provided with a through hole and a first clearance hole. The locking piece is respectively arranged in the through hole and the connecting hole in a penetrating way, so that the clamp main body is reliably connected with the body. The clamping parts are connected with the clamping piece main body and are distributed at intervals along the circumferential direction of the clamping piece main body. The clamping parts are surrounded into a sliding hole and a groove which are communicated with each other, and the groove is communicated with the first clearance hole through the sliding hole. A gap exists between every two adjacent clamping parts, and the gap is communicated with the sliding hole and the groove respectively. The driving mechanism is arranged on the body. The pull rod penetrates through the first clearance hole and the sliding hole. One end of the pull rod is connected with the power output end of the driving mechanism, and the other end of the pull rod is positioned in the groove. The cross-sectional area of the end of the pull rod far away from the power output end of the driving mechanism is larger than that of the slide hole. When the pull rod slides relative to the body, the pull rod slides relative to the chuck piece, so that the pull rod slides in the first clearance hole and the sliding hole, the other end of the pull rod is positioned in the groove, the end part of the pull rod slides into the sliding hole from the groove, and the cross section area of the end part of the pull rod, which is far away from the power output end of the driving mechanism, is larger than that of the sliding hole. Gaps between any two adjacent clamping parts are equal, so that the opening angle of each clamping part relative to the clamping part main body is uniform, and the clamp is uniformly clamped at the periphery of a product. The body is provided with a second clearance hole and a holding tank communicated with the second clearance hole. The pull rod penetrates through the second clearance hole and moves relative to the body, so that the driving mechanism is better arranged on the body. The driving mechanism is located in the accommodating groove, the driving mechanism is well arranged on the body, the space of the body occupied by the driving mechanism is reduced, the structure of the clamp is further compact, and the second clearance hole is communicated with the first clearance hole. The pull rod comprises a pull rod body and a push-away part. The pull rod body penetrates through the first clearance hole and the sliding hole. One end of the pull rod body is connected with the power output end of the driving mechanism, and the other end of the pull rod body is connected with the push-away part. The cross-sectional area of the pull rod body is smaller than or equal to that of the slide hole. The push-away part is positioned in the groove, and the cross-sectional area of the push-away part is larger than that of the sliding hole. When the driving mechanism drives the pull rod body to slide in the sliding hole towards the first clearance hole, the pull rod body drives the push-away part to slide into the sliding hole from the groove, and the cross section area of the push-away part is larger than that of the sliding hole, so that the push-away part slides into the sliding hole and simultaneously props up the plurality of clamping parts, the pull rod is made to simultaneously prop up the plurality of clamping parts when sliding in the sliding hole towards the first clearance hole, and a product is clamped between the plurality of clamping parts. In one embodiment, a clamp includes a body, a jaw member, a drive mechanism, a pull rod, and a retaining member. The collet piece includes a collet body and a plurality of gripping portions. The body is provided with a connecting hole and a positioning groove communicated with the connecting hole, and the clamp main body is positioned in the positioning groove and connected with the body, so that the clamp main body is quickly positioned and connected with the body. The clamp main body is provided with a through hole and a first clearance hole. The locking piece is respectively arranged in the through hole and the connecting hole in a penetrating way, so that the clamp main body is reliably connected with the body. The clamping parts are connected with the clamping piece main body and are distributed at intervals along the circumferential direction of the clamping piece main body. The clamping parts are surrounded into a sliding hole and a groove which are communicated with each other, and the groove is communicated with the first clearance hole through the sliding hole. A gap exists between every two adjacent clamping parts, and the gap is communicated with the sliding hole and the groove respectively. The driving mechanism is arranged on the body. The pull rod penetrates through the first clearance hole and the sliding hole. One end of the pull rod is connected with the power output end of the driving mechanism, and the other end of the pull rod is positioned in the groove. The cross-sectional area of the end of the pull rod far away from the power output end of the driving mechanism is larger than that of the slide hole. When the pull rod slides relative to the body, the pull rod slides relative to the chuck piece, so that the pull rod slides in the first clearance hole and the sliding hole, the other end of the pull rod is positioned in the groove, the end part of the pull rod slides into the sliding hole from the groove, and the cross section area of the end part of the pull rod, which is far away from the power output end of the driving mechanism, is larger than that of the sliding hole. Gaps between any two adjacent clamping parts are equal, so that the opening angle of each clamping part relative to the clamping part main body is uniform, and the clamp is uniformly clamped at the periphery of a product. The body is provided with a second clearance hole and a holding tank communicated with the second clearance hole. The pull rod penetrates through the second clearance hole and moves relative to the body, so that the driving mechanism is better arranged on the body. The driving mechanism is located in the accommodating groove, the driving mechanism is well arranged on the body, the space of the body occupied by the driving mechanism is reduced, the structure of the clamp is further compact, and the second clearance hole is communicated with the first clearance hole. The pull rod comprises a pull rod body and a push-away part. The pull rod body penetrates through the first clearance hole and the sliding hole. One end of the pull rod body is connected with the power output end of the driving mechanism, and the other end of the pull rod body is connected with the push-away part. The cross-sectional area of the pull rod body is smaller than or equal to that of the slide hole. The push-away part is positioned in the groove, and the cross-sectional area of the push-away part is larger than that of the sliding hole. When the driving mechanism drives the pull rod body to slide in the sliding hole towards the first clearance hole, the pull rod body drives the push-away part to slide into the sliding hole from the groove, and the cross section area of the push-away part is larger than that of the sliding hole, so that the push-away part slides into the sliding hole and simultaneously props up the plurality of clamping parts, the pull rod is made to simultaneously prop up the plurality of clamping parts when sliding in the sliding hole towards the first clearance hole, and a product is clamped between the plurality of clamping parts. The part of the push-open part adjacent to the pull rod body is provided with a conical stop surface. The groove is matched with the conical stopping surface, so that the plurality of clamping parts are gradually propped open in the process that the push-open part slides into the sliding hole from the groove, the problem that the push-open part is too large in resistance in the process of propping open the plurality of clamping parts is solved, the impact on the push-open part in the process of propping open the plurality of clamping parts is reduced, and the service life of the clamp is prolonged. In order to better open the clamping part by the push-open part, the clamping head piece and the push rod are coaxially arranged, so that the clamping part can be better opened by the push-open part in the sliding process of the push-open part in the sliding hole. In this embodiment, a plurality of clamping parts encircle the push rod setting along the circumference of push rod, make the push rod better strut the clamping part. Furthermore, the extending direction of the gap is parallel to the axial direction of the push rod, so that the push-away part can quickly open two adjacent clamping parts in the sliding process in the sliding hole, the sensitivity of the clamp is improved, the force of the push-away part acting on each clamping part is balanced, and the situation that the clamping part is damaged due to overlarge stress of a local clamping part is avoided. In order to improve the strength and the deformation telescopic performance of the clamping parts, the clamping parts can better clamp products, furthermore, the cross section area of each clamping part, which is close to the clamping part main body, is larger than the cross section area of each clamping part, which is far away from the clamping part main body, and the end part of each clamping part, which is far away from the clamping part main body, is provided with an inclined conical surface structure, so that the clamping parts have better strength and deformation telescopic performance in the process of opening and deforming, the products can be better clamped by the clamp, and the service life of the clamp is prolonged. In the embodiment, the thickness of the cross section of each clamping part adjacent to the clamping part main body is larger than that of the cross section far away from the clamping part main body, so that the clamping parts have better strength and deformation telescopic performance in the process of expanding and deforming. In order to further improve the strength of the clamping parts, so that the clamping parts can better clamp products, furthermore, the end part of each clamping part, which is far away from the clamping part main body, is provided with a flange, and the inclined conical surface structure extends to one side of the flange, which is close to the body, so that the situation that the clamping parts crack in the opening deformation process is avoided, and the clamping parts have certain strength in the opening deformation process, so that the clamping parts can better clamp products. In order to enable the clamping part to better clamp the product, further, the clamping part is provided with a positioning groove communicated with the groove, when the clamping part is expanded and deformed to a preset angle, the product is positioned in the positioning groove and positioned with the clamping part, and the product is better positioned on the clamping part. In order to avoid the problem that the gap between two adjacent clamping parts of the clamping part body is cracked in the opening deformation process of the clamping parts, the end part of the clamping part body connected with each clamping part is provided with a reinforcing band which is distributed along the circumferential direction of the clamping part body, the problem that the gap between two adjacent clamping parts of the clamping part body is cracked in the opening deformation process of the clamping parts is avoided, the crack stopping effect is achieved, and the service life of the clamp is prolonged. In one embodiment, the position of the clamp main body, which is close to the reinforcing belt, is provided with a separation groove, the extending direction of the separation groove is parallel to the extending direction of the reinforcing belt, and the separation groove is positioned on one side of the reinforcing belt, which is far away from the gap, so that the clamp main body is prevented from accidentally cracking the reinforcing belt along the gap in the opening and deformation process of the clamping part, the separation effect is achieved, and the double separation effect is achieved under the combined action of the separation groove and the reinforcing belt.

In one embodiment, the cylinder support comprises a first support plate, a second support plate and a third support plate which are connected in sequence, and the first support plate and the third support plate are respectively and fixedly arranged on the base; the first cylinder and the second cylinder are respectively and fixedly arranged on at least one of the first support plate, the second support plate and the third support plate. Further, in one embodiment, the first cylinder is fixedly disposed on the first bracket plate, and the second cylinder is fixedly disposed on the second bracket plate or the third bracket plate. The rest of the embodiments are analogized and are not described in detail. By the design, the first air cylinder and the second air cylinder are easy to distribute and install, the piece to be detected is fixed by matching with the base, and the air inflation control box is matched to adopt air without water for tightness detection, so that the piece to be detected is protected, and redundant drying or airing procedures are avoided; and simple structure need not the relevant product of dismouting and can carry out holistic leakproofness and detect, is favorable to saving the process and avoids the dismouting to reprocess can produce defective products and scrap and other part damages. In one embodiment, the output directions of the first cylinder and the second cylinder are arranged in parallel. In one embodiment, the first cylinder is connected with a first fixing piece in a driving mode, the second cylinder is connected with a second fixing piece in a driving mode, and the first fixing piece and the second fixing piece are matched with the base together to fix the to-be-detected piece and the end portion, connected with the inflation port, of the inflation tube; or, the first fixing piece is matched with the base to fix the piece to be detected and the second fixing piece is matched with the base to fix the end part, connected with the inflation port, of the inflation tube, namely, the first fixing piece is matched with the base to fix the piece to be detected, and the second fixing piece is matched with the base to fix the end part, connected with the inflation port, of the inflation tube. Further, in one embodiment, the fixing directions of the first fixing element and the second fixing element are arranged in parallel. In one embodiment, the first fixing member and the second fixing member are both plate-shaped structures. In one embodiment, the first fixing member and the second fixing member are arranged in parallel. Further, in one embodiment, the first fixing member and the second fixing member are two parallel plates or two rectangular blocks. The design is suitable for detecting the sealing performance of the die casting, and is also suitable for detecting other structures needing the sealing performance; the method is favorable for rapidly and efficiently detecting the sealing property of a large number of pieces to be detected; and the design that the first cylinder and the second cylinder apply force to the piece to be detected respectively is adopted, so that the matching of the pieces to be detected in different shapes and sizes is facilitated.

Further, in one embodiment, the end of the inflation tube close to the inflation port is provided with a first connection terminal, that is, the end of the inflation tube connected to the inflation port is provided with a first connection terminal, and the first connection terminal has a first deformation zooming end part for deforming to match the inflation port and seal the inflation port when the inflation port of the piece to be detected is connected; the tip that is close to the detection port of connecting trachea is equipped with second connecting terminal, and second connecting terminal has the second deformation and zooms the tip for take place deformation in order to match the detection port and sealed detection port when the detection port of treating the detection piece is being connected. The design is favorable for adapting to a plurality of pieces to be detected with different specifications, and the universality of the air pressure leakage detecting device is improved.

In one embodiment, the air pressure leakage detection device further comprises an element to be detected. In one embodiment, the number of the members to be detected is plural. In one embodiment, the part to be detected is a die-cast part, or the inflation port and the detection port are communicated, or the inflation port and the detection port integrally penetrate through the part to be detected, or the inflation port and the detection port respectively serve as connecting holes. Further, in one embodiment, the inflation port and the detection port are screw holes respectively. In one embodiment, the inflation port and the detection port are one of a through hole and a screw hole, respectively. In one embodiment, the inflation port and the detection port are screw holes with different diameters. Further, in one embodiment, the inflation port and the detection port are communicated and integrally penetrate through the piece to be detected. According to the design, the design condition of the piece to be detected does not need to be considered, extra adjustment or corresponding structure addition is not needed, only corresponding inflation ports and detection ports are needed, even if the inflation ports are only screw holes, leakage detection can be achieved, and the application is very convenient.

In one embodiment, as shown in fig. 1, an air pressure leak detection device includes a detection structure 100, an inflation control box 110, an air pressure detector 120, an inflation tube 130 and a connecting air tube 140; the detecting structure 100 has a base 150 and a cylinder support 160, and referring to fig. 2, the detecting structure 100 further has a first cylinder 170 and a second cylinder 180; the cylinder bracket 160 is fixedly arranged on the base 150, and the first cylinder 170 and the second cylinder 180 are respectively and fixedly arranged on the cylinder bracket 160 or beside the cylinder bracket 160; referring to fig. 11 and 12, the first cylinder 170 and the second cylinder 180 cooperate with the base 150 to fix the end portions of the to-be-detected piece 999 and the inflation tube 130 connected to the inflation port 901, or the first cylinder 170 cooperates with the base 150 to fix the to-be-detected piece 999 and the second cylinder 180 cooperates with the base 150 to fix the end portion of the inflation tube 130 connected to the inflation port 901. It can be understood that, in the embodiments shown in the drawings, the air pressure leakage detecting device may include the to-be-detected piece 999 or may not include the to-be-detected piece 999, and when the air pressure leakage detecting device does not include the to-be-detected piece 999, the to-be-detected piece 999 is an environmental element. Referring to fig. 2 and 10, the cylinder bracket 160 includes a first bracket plate 161, a second bracket plate 162 and a third bracket plate 163 sequentially connected, and the first bracket plate 161 and the third bracket plate 163 are respectively fixed on the base 150; the first cylinder 170 is fixedly disposed on the first bracket plate 161, and the second cylinder 180 is fixedly disposed on the second bracket plate 162. In the embodiment shown in fig. 2, the output directions of the first cylinder 170 and the second cylinder 180 are arranged in parallel. The inflation control box 110 is provided with a first display structure 111, a second display structure 112 and associated control structures. Referring to fig. 3 and fig. 9, the output directions of the first cylinder 170 and the second cylinder 180 are parallel, the first cylinder 170 is connected to the first fixing member 171 in a driving manner, the second cylinder 180 is connected to the second fixing member 172 in a driving manner, and the first fixing member 171 and the second fixing member 172 cooperate with the base 150 to fix the end portions of the to-be-detected member 999 and the inflation tube 130 connected to the inflation port 901; alternatively, the first fixing member 171 is fitted to the base 150 to fix the member to be detected 999 and the second fixing member 172 is fitted to the base 150 to fix the end of the inflation tube 130 connected to the inflation port 901. In the embodiment shown in fig. 3, the first fixing member 171 and the second fixing member 172 are rectangular blocks. Referring to fig. 4 and 13, the inflation control box 110 is used to connect the inflation port 901 of the object to be detected 999 through the inflation tube 130; the air pressure detector 120 is used for connecting a detection port 902 of the piece to be detected 999 through the connecting air pipe 140; wherein, the inflation tube 130 is communicated with an inflation port 901 of the piece to be detected 999 through the input pipeline 131; the connecting air pipe 140 is communicated with the detection port 902 of the piece to be detected 999 through the detection pipeline 141. As shown in fig. 7, the air pressure detecting apparatus 120 includes a third display structure 121, a fourth display structure 122 and related control structures. In one embodiment, as shown in FIG. 5, the element 999 has an inflation port 901, and as shown in FIG. 6, the element 999 has a detection port 902. In one embodiment, the inflation port 901 and the detection port 902 are connected to each other and integrally penetrate the member to be detected 999. In a specific embodiment, the to-be-detected part is a die casting, and the air pressure leakage detecting device is an air pressure leakage detecting device for the die casting, as shown in fig. 1 to 13, the air pressure leakage detecting device includes an inflation control box 110 and an air pressure detector 120, before use, a power switch of the inflation control box 110 and the air pressure detector 120 is turned on, the inflation air pressure and the inflation time of the inflation control box 110 are set, the test time and the test air pressure of the air pressure detector 120 are set, when in use, the to-be-detected part 999 is placed at a fixed position of a base 150, the base 150 is sealed by a waterproof rubber ring, the switch of the inflation control box 110 is started, a first air cylinder 170 and a second air cylinder 180 respectively press the to-be-detected part 999 and block a through hole to ensure that the to-be-detected part 999 is sealed, the inflation pipe 130 inflates the inside of the to-be-detected part, the inflation is, and then starting by pressing a switch of the air pressure detector 120, starting to detect the pressure change in the inner cavity by connecting the air pipe 140 with the air pressure detector, if the product is airtight, the internal pressure is not reduced, displaying a green light after the time, if the product is air leakage, the internal pressure is reduced, displaying a red light by an indicator light of the air pressure detector 120 after the time, stopping the switch by pressing the inflation control box 110 after the detection is finished, and taking out the to-be-detected piece 999 to be marked. For example, the power switches of the inflation control box 110 and the air pressure detector 120 are turned on, the inflation pressure of 1.2MPA and the inflation time of 2 minutes and 10 seconds of the inflation control box 110 are set, the test time of 1 minute and 20 seconds and the test pressure of 1.2MPA of the air pressure detector 120 are set, the to-be-detected piece 999 is placed at the fixed position of the base 150, the switch of the inflation control box 110 is pressed to be started, after the time is stabilized, the control box 110 indicates to display a green light, then the switch of the air pressure detector 120 is pressed to be started, after the time is detected, the indicator light of the air pressure detector 120 displays a green light or a red light, the green light is good, air is not leaked, and the red light is bad air leakage. The air pressure leakage detection device is cheap and low in cost, high in production efficiency, capable of directly detecting without soaking water, capable of reducing the drying process after detection, simple in operation with the indicator lamp without misjudgment, capable of detecting air leakage before part assembly and capable of reducing damage cost of assembly failure disassembly.

Other embodiments of the present application further include a gas pressure leak detector that can be implemented by combining technical features of the above embodiments.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.