Air tightness testing equipment

Abstract

The utility model relates to the technical field of air tightness detection, and discloses air tightness test equipment, which comprises a base and a pressure mechanism arranged on the upper end face of the base, the pressure mechanism comprises a pressing assembly, a lower die assembly is arranged below a profiling pressure head, a profiling carrier plate is used for placing a piece to be tested, and the profiling carrier plate is used for placing the piece to be tested. The to-be-tested piece is connected with the air tightness tester, and the profiling carrier plate and the profiling pressure head are both provided with profiling structures matched with the to-be-tested piece; by adopting the adjustable pressure mechanism, the problem that the whole pressure mechanism needs to be replaced and the testing device needs to be readjusted when products with different sizes, shapes or types are detected is solved; by adopting the sliding connection structure of the L-shaped sliding seat and the profiling pressure head and the profiling carrier plate detachably connected with the base, the pressure mechanism does not need to be disassembled and adjusted tediously when different pieces to be tested are replaced, so that the downtime of a production line is effectively reduced, and the use efficiency and productivity of equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection technical field, more particularly, relate to airtightness test equipment. BACKGROUND

[0002] In modern manufacturing industry, airtightness detection as an important link to ensure product quality and function is widely used in automobile, electronic, medical equipment and other industries. With the diversification and complexity of product design, especially the variability of shape and size, the demand for airtightness test equipment is increasing. Airtightness detection methods are mostly differential pressure method, air pressure method, etc. The sealing performance of the product is evaluated by detecting the leakage under certain pressure conditions. These devices usually need accurate test results to ensure that the product meets industry standards, therefore, the compatibility, adjustability and ability to adapt to different types of products have become key factors in device design.

[0003] The pressure mechanism is often used to apply pressure to the detected product. Most of the pressure mechanisms used in the airtightness test process on the market are fixed by interference fit or inlaying of the profiled die and the die seat, and positioned together by pins. This usually only adapts to single type or size of product, and the adaptability is poor. When different sizes, shapes or types of products need to be detected, it is extremely inconvenient to replace the profiled die, often requiring replacement of the entire pressure mechanism and re-adjustment of the test device, greatly increasing the complexity of equipment use and downtime of production line.

[0004] Therefore, it is necessary to provide an airtightness test equipment to solve the problem of replacing the entire pressure mechanism when detecting different sizes, shapes or types of products. SUMMARY

[0005] The main purpose of the utility model is to provide an airtightness test equipment, which aims to solve the technical problems mentioned in the background technology.

[0006] The utility model adopts the following technical solutions:

[0007] An airtightness test equipment, comprising:

[0008] A base and a pressure mechanism arranged on the upper end surface of the base;

[0009] The pressure mechanism comprises a pressing assembly, the pressing assembly comprises a pressing drive arranged above the base, a driving shaft of the pressing drive is connected with an upper die assembly, the upper die assembly comprises an upper die seat fixedly connected with the driving shaft of the pressing drive, the bottom end of the upper die seat is fixedly connected with two symmetrically arranged sliding seats, the sliding seats are arranged in an L shape, two sliding seats are slidably connected with a profiled pressing head, the bottom end of the profiled pressing head is provided with an upper die sealing ring;

[0010] The lower side of the profiled pressing head is provided with a lower die assembly, the lower die assembly comprises a profiled carrier plate detachably connected with the base, wherein the profiled carrier plate is used for placing a test piece, the test piece is connected with an air tightness tester, the profiled carrier plate and the profiled pressing head are both provided with a profiled structure matched with the test piece.

[0011] Further, the pressing drive is a pressing cylinder, the pressing assembly further comprises a plurality of support columns, the plurality of support columns are fixedly arranged on the upper end surface of the base, and the top ends of the plurality of support columns are fixedly provided with a support plate, the pressing cylinder is fixedly arranged on the upper end surface of the support plate, and the driving shaft of the pressing cylinder penetrates the support plate and is directed towards the profiled carrier plate.

[0012] Further, the support plate is provided with a plurality of guide holes, a plurality of guide columns are slidably connected with the guide holes, the bottom ends of the guide columns are fixedly connected with the upper die seat, the guide columns are sleeved with linear bearings, and the bottom ends of the linear bearings are fixedly connected with the support plate.

[0013] Further, the pressing drive is connected with a throttle valve, the throttle valve is connected with a pressure regulating valve, and the pressure regulating valve is fixedly arranged on the upper end surface of the support plate.

[0014] The upper end surfaces of the plurality of guide columns are fixedly provided with a synchronization plate, an oil pressure buffer is arranged below the synchronization plate, and the oil pressure buffer is fixedly connected with the support plate.

[0015] Further, one side of the upper die seat is fixedly connected with an abutting plate, the profiled pressing head abuts against the abutting plate, the side of the upper die seat away from the abutting plate is threadedly connected with a fastener, and one side of the fastener directed towards the profiled pressing head abuts against the profiled pressing head.

[0016] Further, the lower die assembly further comprises a lower die seat, the lower die seat is fixedly connected with the base, and the profiled carrier plate is detachably connected with the lower die seat.

[0017] One side of the profiled carrier plate is fixedly connected with a sliding rail, the upper end surface of the lower die seat is provided with a side pushing cylinder, the output shaft of the side pushing cylinder is connected with a sliding block, the sliding block is in sliding connection with the sliding rail, and the sliding block is fixedly provided with a side sealing ring towards the side surface of the profiled carrier plate.

[0018] Further, the air tightness tester comprises an expansion sealing tank, the expansion sealing tank is connected with an air pressure sensor, the air pressure sensor is connected with a differential pressure sensor, and the differential pressure sensor is connected with the to-be-tested member;

[0019] The expansion sealing tank is further connected with a solenoid valve, and the solenoid valve is connected with the expansion sealing tank through a pressure regulating valve.

[0020] Further, the bottom is sleeved with a box body, the inner side of the box body is provided with a plurality of L-shaped connecting pieces, the connecting pieces are fixedly arranged on the upper end surface of the bottom, and the box body and the bottom are fixedly connected.

[0021] Further, air inlet holes are formed in opposite sides of the box body, and fans are arranged on the inner sides of the air inlet holes.

[0022] An operation window is formed in one side of the box body close to the fastener, and a pressing button is arranged on the opposite sides of the operation window and fixedly connected with the box body.

[0023] Beneficial effects:

[0024] The air tightness testing equipment provided by the utility model has the beneficial effects that: by adopting the adjustable pressure mechanism, the problem that the whole pressure mechanism needs to be replaced and the testing device needs to be re-adjusted when detecting products of different sizes, shapes or types is solved; by adopting the sliding connection structure of the L-shaped sliding seat and the profiled pressure head and the detachable connection of the profiled carrier plate and the bottom, when different to-be-tested members are replaced, the pressure mechanism does not need to be complicatedly disassembled and adjusted, so that the downtime of the production line is effectively reduced, and the use efficiency and productivity of the equipment are improved; by connecting the to-be-tested member and the air tightness tester, the profiled pressure head and the profiled carrier plate both have the profiled structure matched with the to-be-tested member, so that accurate positioning and sealing performance evaluation in the testing process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole structure schematic view of the air tightness testing equipment of the utility model;

[0026] Figure 2 It is a structure schematic view of the pressure mechanism of an embodiment of the utility model;

[0027] Figure 3 It is a structure schematic view of another direction of the pressure mechanism of an embodiment of the utility model;

[0028] Figure 4 Figure 1 is a structural schematic diagram of a lower die assembly according to an embodiment of the present application.

[0029] Wherein: 1, base; 2, pressure mechanism; 3, lower pressing assembly; 31, lower pressing driving part; 32, support column; 33, support plate; 34, guide column; 35, linear bearing; 36, throttle valve; 37, pressure regulating valve; 38, synchronization plate; 39, oil pressure buffer; 4, upper die assembly; 41, upper die base; 42, sliding base; 43, profiled pressing head; 44, upper die sealing ring; 45, abutting plate; 46, fastener; 5, lower die assembly; 51, profiled carrier plate; 52, lower die base; 53, sliding rail; 54, side pushing cylinder; 55, sliding block; 56, side sealing ring; 6, air tightness tester; 7, box body; 8, connecting piece; 9, fan; 10, lower pressing button.

[0030] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] It should be understood that the specific embodiments described herein merely exemplify the present application and are not intended to limit the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] In the description of the present application, it should be noted that, unless otherwise specifically specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include the first and second features directly contact, or can include the first and second features are not directly contact but through the other features between them contact. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just means the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just means the first feature is less than the second feature in horizontal height.

[0035] Referring to Figures 1 to 3 The utility model provides a kind of air tightness test equipment, it include: base 1 and the pressure mechanism 2 being set on the bottom end surface of the base 1;

[0036] The pressure mechanism 2 includes down-pressing component 3, and the down-pressing component 3 includes down-pressing driving piece 31 that is erected above the base 1, and the driving shaft of the down-pressing driving piece 31 is connected with upper die assembly 4, and the upper die assembly 4 includes the upper die seat 41 that is fixedly connected with the driving shaft of the down-pressing driving piece 31, and the bottom end of the upper die seat 41 is fixedly connected with two symmetrically arranged sliding seats 42, the sliding seat 42 is L-shaped arrangement, and two sliding seats 42 are slidably connected with profiled pressure head 43, and the bottom end of the profiled pressure head 43 is provided with upper die sealing ring 44;

[0037] The bottom of the profiled pressure head 43 is provided with lower die assembly 5, and the lower die assembly 5 includes profiled carrier plate 51 that is detachably connected with the base 1, wherein the profiled carrier plate 51 is used to place the piece to be measured, and the piece to be measured is connected with air tightness tester 6, and the profiled carrier plate 51 and profiled pressure head 43 are all provided with the profiled structure that is matched with the piece to be measured.

[0038] In the above embodiment, the device comprises a base 1 and a pressure mechanism 2 arranged on the upper end surface of the base 1, which is responsible for applying pressure to the test piece to realize the sealing test. The lower pressing assembly 3 comprises a lower pressing drive 31 erected above the base 1, and the telescopic shaft of the lower pressing drive 31 is directed towards the base 1. The driving shaft of the drive is connected with an upper die assembly 4. The upper die seat 41 of the upper die assembly 4 is fixedly connected with the driving shaft of the lower pressing drive 31, which ensures that the upper die seat 41 can realize accurate up-down movement with the movement of the driving shaft. The bottom end of the upper die seat 41 is fixedly connected with two symmetrically arranged slide seats 42. The slide seats 42 are designed in L shape, and the two L-shaped slide seats 42 can provide fixed clamping grooves for the profiled pressing head 43, so that the profiled pressing head 43 can be stably inserted into the slide seat 42 and fixedly connected with the upper die seat 41. When it is necessary to replace the pressing head, the profiled pressing head 43 can be quickly and conveniently disassembled and installed with the upper die seat 41, thereby realizing efficient profiled pressing head 43 replacement operation, and significantly reducing the production line downtime caused by replacing the profiled pressing head 43, especially when different sizes and shapes of products need to be detected.

[0039] The lower side of the profiled pressing head 43 is provided with a lower die assembly 5, wherein the lower die assembly 5 comprises a profiled carrier plate 51 which is detachably connected with the base 1. The profiled carrier plate 51 can be quickly replaced according to different types of test pieces. The profiled carrier plate 51 is provided with a profiled structure matched with the test piece, so that the test piece can form a good sealing environment between the upper die and the lower die. The test piece can be connected with the air tightness tester 6 to perform sealing performance test under the action of pressure.

[0040] In summary, the clamping groove formed by the L-shaped slide seat 42 enables the profiled pressing head 43 to be conveniently inserted and fixedly connected with the upper die seat 41, which ensures that the profiled pressing head 43 can stably and accurately apply pressure during up-down movement, and also greatly improves the replacement efficiency of the profiled pressing head 43, so that the device can quickly adapt to test pieces of different sizes and shapes, and reduce the downtime caused by device adjustment and replacement. The detachable design of the profiled carrier plate 51 enables the user to flexibly adjust the mold configuration according to the requirements of different test pieces, without the need to replace the entire pressure mechanism 2, which significantly reduces the complexity and maintenance cost of the production line, and eliminates the need for tedious disassembly and adjustment of the pressure mechanism 2 when replacing different test pieces.

[0041] Reference Figure 2 In an embodiment, the lower pressing drive 31 is a lower pressing cylinder, and the lower pressing assembly 3 further comprises a plurality of support columns 32 fixedly arranged on the upper end surface of the base 1. The top ends of the plurality of support columns 32 are fixedly provided with a support plate 33, and the lower pressing cylinder is fixedly arranged on the upper end surface of the support plate 33. The driving shaft of the lower pressing cylinder penetrates the support plate 33 and is directed towards the profiled carrier plate 51.

[0042] In the above embodiment, the lower pressing cylinder serves as the main power source, and can provide reliable pressing force to form effective pressing action between the upper mold assembly 4 and the lower mold assembly 5, thereby ensuring the sealing effect of the test piece in the air tightness test.

[0043] The lower pressing assembly 3 further comprises a plurality of support columns 32, which are uniformly fixed on the upper end surface of the base 1 and serve to provide a stable support platform for the support plate 33. The top end of the support column 32 is fixedly connected to the support plate 33, so that the support plate 33 forms a rigid load-bearing structure, thereby providing a reliable foundation for the installation of the lower pressing cylinder. The lower pressing cylinder is fixedly arranged on the upper end surface of the support plate 33, ensuring that the position of the cylinder does not shift during operation. The drive shaft of the lower pressing cylinder is arranged towards the direction of the profiling carrier plate 51, and penetrates the support plate 33 and is connected to the upper mold assembly 4. Through this penetrating connection design, the intermediate transmission link can be minimized, thereby improving the transmission efficiency of the pressing force and the reliability of the test.

[0044] In an example, the support plate 33 is provided with a plurality of guide holes, and a plurality of guide columns 34 are slidably connected to the guide holes. The bottom end of the guide column 34 is fixedly connected to the upper mold seat 41, and a linear bearing 35 is sleeved on the guide column 34. The bottom end of the linear bearing 35 is fixedly connected to the support plate 33.

[0045] In the above embodiment, a stable guide structure is formed by arranging a plurality of guide holes and guide columns 34. The support plate 33 is provided with a plurality of guide holes, and the positions and numbers of the guide holes are matched with the structural design of the upper mold assembly 4, ensuring that the guide columns 34 can be evenly distributed around the upper mold seat 41, thereby providing multi-point support for the downward movement of the upper mold assembly 4. In this embodiment, the guide holes and guide columns 34 are preferably arranged as four.

[0046] The bottom end of the guide column 34 is fixedly connected to the upper mold seat 41, which serves to guide the vertical movement of the upper mold seat 41. In order to further improve the guiding accuracy, the guide column 34 is externally sleeved with a linear bearing 35. The linear bearing 35 has good linear motion characteristics, and its bottom end is fixedly connected to the support plate 33. In this way, the linear bearing 35 can stably support the guide column 34, while reducing the friction and the possibility of deviation of the guide column 34 during sliding.

[0047] When the drive shaft of the lower pressing cylinder pushes the upper mold assembly 4 to move, the guide column 34 slides linearly under the constraint of the linear bearing 35, effectively avoiding the inclination or deviation of the upper mold base 41. Due to the existence of the linear bearing 35, the guide structure not only improves the stability of the movement, but also reduces the mechanical wear of the system operation, thereby prolonging the service life of the equipment. This guide structure establishes a reliable linear guide path between the support plate 33 and the upper mold assembly 4, ensuring the high precision and consistency of the equipment in repeated tests, further optimizing the overall performance of the air tightness test equipment.

[0048] Reference Figure 2 In an embodiment, the lower pressing drive 31 is connected with a throttle valve 36, the throttle valve 36 is connected with a pressure regulating valve 37, and the pressure regulating valve 37 is fixedly arranged on the upper end face of the support plate 33.

[0049] The upper end face of each guide column 34 is fixedly provided with a synchronization plate 38, and the lower side of the synchronization plate 38 is provided with an oil pressure buffer 39, which is fixedly connected with the support plate 33.

[0050] In the above embodiment, the lower pressing drive 31 is connected with a throttle valve 36, and the throttle valve 36 adjusts the airflow of the cylinder, thereby accurately controlling the movement speed of the drive shaft. By adjusting the opening of the throttle valve 36, the speed and force of the pressing process can be accurately controlled to adapt to the air tightness test requirements of different types of test pieces. The throttle valve 36 is further connected with a pressure regulating valve 37, which is fixed on the upper end face of the support plate 33, mainly used for adjusting the working pressure of the lower pressing drive 31. The pressure regulating valve 37 ensures that the cylinder can always provide stable and appropriate pressure under different working conditions, avoiding excessive or insufficient pressure that may adversely affect the performance of the equipment or the test piece.

[0051] The upper end of the guide column 34 is fixedly provided with a synchronization plate 38, and the synchronization plate 38 is used to coordinate the movement of multiple guide columns 34, ensuring the synchronization between the guide columns 34 during the pressing movement, and avoiding the inclination or uneven contact of the upper mold assembly 4 due to deviation or asynchronization. The lower side of the synchronization plate 38 is provided with an oil pressure buffer 39, which is fixedly connected with the support plate 33, and is used to absorb the excess kinetic energy of the synchronization plate 38 abutting the triggering end of the oil pressure buffer 39 when the upper mold assembly 4 moves downward, thereby reducing the impact force. The oil pressure buffer 39 effectively reduces mechanical vibration and noise through hydraulic damping, improving the stability and reliability of the entire system operation.

[0052] Reference Figure 2 And Figure 3In an embodiment, one side of the upper die holder 41 is fixedly connected with an abutting plate 45, the profiling head 43 abuts against the abutting plate 45, and a fastener 46 is threadedly connected to the side of the upper die holder 41 away from the abutting plate 45, the fastener 46 abuts against the profiling head 43 from one side thereof.

[0053] In the above embodiment, the abutting plate 45 is fixedly arranged on one side of the upper die holder 41 to provide support and limiting effect. One end of the profiling head 43 can accurately abut against the abutting plate 45, so that the position of one side of the profiling head 43 is stable, thereby effectively avoiding the movement of the profiling head 43 in the transverse direction when the pressing driving member 31 is forced, and ensuring the positioning accuracy in the testing process.

[0054] The side of the upper die holder 41 away from the abutting plate 45 is provided with the fastener 46 installed by thread connection. The fastener 46 further reinforces the position of the profiling head 43, and one end thereof abuts against the profiling head 43. Through the design of thread connection, the fastener 46 can not only apply uniform pressure to the profiling head 43 to fix the position thereof, but also can be adjusted by rotation to adapt to profiling heads 43 of different sizes. This design allows the user to quickly loosen or tighten the fastener 46, thereby conveniently completing the disassembly or replacement operation of the profiling head 43, and greatly improves the flexibility and use convenience of the equipment.

[0055] Reference Figure 2 and Figure 4 In an embodiment, the lower die assembly 5 further comprises a lower die holder 52 fixedly connected with the base 1, and the profiling carrier plate 51 is detachably connected with the lower die holder 52.

[0056] One side of the profiling carrier plate 51 is fixedly connected with a sliding rail 53, the upper end surface of the lower die holder 52 is provided with a side pushing cylinder 54, the output shaft of the side pushing cylinder 54 is connected with a sliding block 55, the sliding block 55 is in sliding connection with the sliding rail 53, and the side of the sliding block 55 away from the profiling carrier plate 51 is fixedly provided with a side sealing ring 56.

[0057] In the above embodiment, the lower die holder 52 is fixedly installed on the base 1 as the load-bearing structure of the lower die assembly 5 to provide stable support for the entire lower die part. The profiling carrier plate 51 is detachably connected with the lower die holder 52, allowing the user to quickly replace the profiling carrier plate 51 according to the shape or specification of the different to-be-tested parts.

[0058] One side of the profiled carrier plate 51 is fixedly installed with a sliding rail 53, and the upper end surface of the lower mold base 52 is provided with a side pushing cylinder 54. The output shaft of the side pushing cylinder 54 is connected with a sliding block 55, and the sliding block 55 and the sliding rail 53 form a sliding connection. The side pushing cylinder 54 drives the sliding block 55 to move along the sliding rail 53 through the output shaft, realizes the transverse pushing of the profiled structure direction on the profiled carrier plate 51, realizes the lateral pressing and sealing of the measured piece. In order to further improve the sealing effect in the test process, the side of the sliding block 55 towards the profiled carrier plate 51 is fixedly installed with a side sealing ring 56. The side sealing ring 56 forms a sealed contact when the sliding block 55 pushes the profiled carrier plate 51, enhances the sealing performance of the test environment, and ensures the accuracy of the test results. Through the stable support of the lower mold base 52, the sliding connection design of the profiled carrier plate 51, and the efficient driving of the side pushing cylinder 54, the embodiment realizes the dual optimization of operation convenience and sealing reliability, and provides a flexible and accurate solution for the air tightness test of multiple specifications and shapes of measured pieces.

[0059] In an embodiment, the air tightness tester 6 comprises an expansion sealing tank, the expansion sealing tank is connected with an air pressure sensor, the air pressure sensor is connected with a differential pressure sensor, and the differential pressure sensor is connected with the measured piece;

[0060] The expansion sealing tank is also connected with a solenoid valve, and the solenoid valve is connected with the expansion sealing tank through a pressure regulating valve 37.

[0061] In the above embodiment, the air tightness tester 6 comprises an expansion sealing tank, the main function of the expansion sealing tank is to provide a stable pressure source, at the same time as a buffer container, to reduce the interference of pressure fluctuation on the test results. The expansion sealing tank is connected with an air pressure sensor, which is used to monitor the air pressure state in the tank in real time and convert it into an electrical signal output. Through the monitoring of the air pressure sensor, the air pressure value in the expansion sealing tank can be accurately controlled, and the stability of the pressure in the air tightness test process can be ensured.

[0062] The air pressure sensor is further connected with a differential pressure sensor, and the differential pressure sensor is directly connected with the measured piece. The function of the differential pressure sensor is to compare the pressure difference between the expansion sealing tank and the measured piece in the air tightness test, so as to judge whether the measured piece leaks. The differential pressure sensor has high sensitivity and high precision, and through the detection of very small pressure difference change, the rapid evaluation of the air tightness state of the measured piece can be realized.

[0063] In addition, the expansion sealing tank is also connected with a solenoid valve, and the solenoid valve is used to realize the rapid switching and control of the gas circuit. When the solenoid valve is opened, the gas can enter the expansion sealing tank or the measured piece at a set flow rate. The solenoid valve and the expansion sealing tank are connected with a pressure regulating valve 37, and the pressure regulating valve 37 accurately adjusts the air pressure entering the expansion sealing tank, so as to ensure that the pressure in the test process is kept within the target range.

[0064] In an embodiment, the bottom 1 is sleeved with a box 7, and the inner side of the box 7 is provided with a plurality of L-shaped connecting pieces 8 fixedly arranged on the upper end surface of the bottom 1 to fixedly connect the box 7 and the bottom 1.

[0065] In the above embodiment, the box 7 is sleeved on the periphery of the bottom 1 to provide external protection for the equipment. In order to ensure the firm connection between the box 7 and the bottom 1, a plurality of L-shaped connecting pieces 8 are uniformly distributed on the inner side of the box 7. The L-shaped connecting piece 8 can provide double-sided contact and support, thereby enhancing the strength and stability of the connection. One end of the connecting piece 8 is fixedly arranged on the upper end surface of the bottom 1, and the other end is in close contact with the inner side of the box 7 and is fixed, so that a stable connection structure is formed between the box 7 and the bottom 1, which can effectively resist the displacement or loosening of the box 7 under the action of external force, and is convenient for disassembly and assembly operation, facilitating the daily maintenance of the equipment and the adjustment of the internal components.

[0066] Reference Figure 1 In an embodiment, air inlet holes are formed on opposite sides of the box 7, and a fan 9 is arranged on the inner side of the air inlet hole.

[0067] An operation window is formed on one side of the box 7 close to the fastener 46, and a push-down button 10 is arranged on opposite sides of the operation window and fixedly connected with the box 7.

[0068] In the above embodiment, air inlet holes are formed on opposite sides of the box 7, and the main function of the air inlet hole is to provide an air flow channel to ensure effective ventilation inside the equipment. A fan 9 is arranged on the inner side of the air inlet hole, and the fan 9 accelerates air flow.

[0069] An operation window is formed on one side of the box 7 close to the fastener 46. The operation window not only facilitates the observation and operation of the equipment by the operator, but also makes the internal components of the equipment easy to access and adjust. The design of the operation window takes into account the convenience in use, so that the operator can quickly check and adjust the state inside the equipment.

[0070] Push-down buttons 10 are arranged on opposite sides of the operation window, and the main function of the push-down button 10 is to start the push-down assembly 3 to control the operation of the push-down driving piece 31, thereby completing the pressure application to the measured piece in the air tightness test process. These buttons are fixedly connected with the box 7 to ensure the stability of the buttons and avoid loosening or falling off during operation.

[0071] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A hermeticity testing apparatus, characterized by, Include: Base (1) and the pressure mechanism (2) arranged on the upper end surface of the base (1); The pressure mechanism (2) comprises a lower pressing assembly (3), the lower pressing assembly (3) comprises a lower pressing drive (31) arranged above the base (1), the drive shaft of the lower pressing drive (31) is connected with an upper die assembly (4), the upper die assembly (4) comprises an upper die seat (41) fixedly connected with the drive shaft of the lower pressing drive (31), the bottom end of the upper die seat (41) is fixedly connected with two symmetrically arranged sliding seats (42), the sliding seat (42) is arranged in L shape, two sliding seats (42) are slidably connected with a profiled pressing head (43), the bottom end of the profiled pressing head (43) is provided with an upper die sealing ring (44); The lower side of the profiled pressing head (43) is provided with a lower die assembly (5), the lower die assembly (5) comprises a profiled carrier plate (51) which is detachably connected with the base (1), wherein the profiled carrier plate (51) is used for placing the measured piece, the measured piece is connected with the air tightness tester (6), the profiled carrier plate (51) and the profiled pressing head (43) are provided with a profiled structure matched with the measured piece.

2. A leak testing apparatus according to claim 1, wherein The lower pressing drive (31) is a lower pressing cylinder, the lower pressing assembly (3) further comprises a plurality of supporting columns (32), a plurality of supporting columns (32) are fixedly arranged on the upper end surface of the base (1), and the top ends of the plurality of supporting columns (32) are fixedly provided with a supporting plate (33), the lower pressing cylinder is fixedly arranged on the upper end surface of the supporting plate (33), and the drive shaft of the lower pressing cylinder penetrates the supporting plate (33) and is directed to the profiled carrier plate (51).

3. A leak testing apparatus according to claim 2, wherein The supporting plate (33) is provided with a plurality of guide holes, a plurality of guide holes are slidably connected with guide columns (34), the bottom end of the guide column (34) is fixedly connected with the upper die seat (41), the guide column (34) is sleeved with a linear bearing (35), and the bottom end of the linear bearing (35) is fixedly connected with the supporting plate (33).

4. A leak testing apparatus according to claim 3, wherein The lower pressing drive (31) is connected with a throttle valve (36), the throttle valve (36) is connected with a pressure regulating valve (37), and the pressure regulating valve (37) is fixedly arranged on the upper end surface of the supporting plate (33); The upper end surfaces of a plurality of guide columns (34) are fixedly provided with a synchronization plate (38), an oil pressure buffer (39) is arranged below the synchronization plate (38), and the oil pressure buffer (39) is fixedly connected with the supporting plate (33).

5. The air tightness testing apparatus of claim 1, wherein, One side of the upper die seat (41) is fixedly connected with an abutting plate (45), the profiled pressing head (43) abuts against the abutting plate (45), and the side of the upper die seat (41) away from the abutting plate (45) is threadedly connected with a fastener (46), one side of the fastener (46) directed to the profiled pressing head (43) abuts against the profiled pressing head (43).

6. The air tightness testing apparatus of claim 1, wherein, The lower die assembly (5) further comprises a lower die seat (52), the lower die seat (52) is fixedly connected with the base (1), and the profiled carrier plate (51) is detachably connected with the lower die seat (52); One side of the profiled carrier plate (51) is fixedly connected with a sliding rail (53), the upper end surface of the lower die seat (52) is provided with a side pushing cylinder (54), the output shaft of the side pushing cylinder (54) is connected with a sliding block (55), the sliding block (55) is slidably connected with the sliding rail (53), and the sliding block (55) is fixedly arranged with a side sealing ring (56) on one side of the profiled carrier plate (51).

7. The air tightness testing apparatus of claim 1, wherein The air tightness tester (6) comprises an expansion sealing tank, the expansion sealing tank is connected with an air pressure sensor, the air pressure sensor is connected with a differential pressure sensor, and the differential pressure sensor is connected with the measured piece; The expansion sealing tank is also connected with a solenoid valve, and a pressure regulating valve (37) is connected between the solenoid valve and the expansion sealing tank.

8. The air tightness testing apparatus of claim 5, wherein, The bottom seat (1) is sleeved with a box body (7), the inner side of the box body (7) is provided with a plurality of L-shaped connecting pieces (8), the connecting pieces (8) are fixedly arranged on the upper end surface of the bottom seat (1) to fixedly connect the box body (7) and the bottom seat (1).

9. A leak testing apparatus according to claim 8, wherein, The opposite sides of the box body (7) are provided with air inlet holes, and the inner sides of the air inlet holes are provided with fans (9); The side of the box body (7) close to the fastener (46) is provided with an operation window, and the opposite sides of the operation window are provided with a pressing button (10), and the pressing button (10) is fixedly connected with the box body (7).

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