A non-destructive leak detection system

Abstract

This invention belongs to the field of non-destructive testing (NDT) technology. It proposes a NDT system where a lower cavity drive mechanism is fixedly connected to a base plate, and a leak detection subsystem is connected to an upper cavity drive mechanism. The output of the upper cavity drive mechanism is connected to the upper test cavity to drive its vertical movement; the output of the lower cavity drive mechanism is connected to the lower test cavity to drive its horizontal movement; a sample flipping mechanism is used to flip samples whose non-test surface is facing upwards; and a sample moving mechanism is used to move samples with their test surface facing upwards into the inner cavity of the lower test cavity. The upper opening of the lower test cavity is used to connect with the lower opening of the upper test cavity to form a sealed test cavity. This invention significantly improves the efficiency of NDT.

Description

Technical Field

[0001] This utility model relates to the field of non-destructive testing technology, and in particular to a non-destructive testing system. Background Technology

[0002] The statements in this section merely provide background information related to this utility model and do not necessarily constitute prior art.

[0003] The principle of sealing test for strip packs and medicine bottles (such as vials, ampoules, etc.) is to place the sample in a sealed test chamber, evacuate the test chamber, and use a leak detection sensor to perform a non-destructive leak test on the sample.

[0004] Currently, sealing test devices on the market require opening the upper test chamber before each test, placing the sample in the inner cavity of the lower test chamber, and forming a sealed space through the cooperation of the inner cavities of the upper and lower test chambers for non-destructive leak testing. After the test is completed, the upper test chamber needs to be opened, and the sample needs to be manually removed from the lower test chamber before another sample is placed for testing. This results in low efficiency for continuous testing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a non-destructive leak detection system. Through the coordination of a leak detection subsystem, a sample transfer mechanism, and a sample flipping mechanism, the efficiency of non-destructive leak detection is greatly improved.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A non-destructive testing system includes: a base plate, at least one leak detection subsystem, a sample transfer mechanism, and a sample flipping mechanism. Each leak detection subsystem is equipped with an upper cavity driving mechanism, a test upper cavity, a test lower cavity, and a lower cavity driving mechanism. The lower cavity drive mechanism is fixedly connected to the base plate, the leak detection test subsystem is connected to the upper cavity drive mechanism, and the output end of the upper cavity drive mechanism is connected to the test upper cavity to drive the vertical movement of the test upper cavity. The output end of the lower cavity drive mechanism is connected to the lower test cavity to drive the lower test cavity to move horizontally. The specimen flipping mechanism is used to flip specimens whose non-test surface is facing upwards; The sample transfer mechanism is used to move the sample with the test surface facing upward into the inner cavity of the lower test chamber. The upper opening of the inner cavity of the lower test chamber is connected with the lower opening of the inner cavity of the upper test chamber to form a sealed test chamber.

[0007] In one implementation of the present invention, the leak detection test subsystem is arranged inside an electrical box, and the bottom of the electrical box is connected to the upper cavity drive mechanism.

[0008] In the first implementation of the present invention, the leak detection test subsystem, the upper cavity drive mechanism, and the test upper cavity are arranged inside the housing. The housing is connected to a part of the base plate to form a test space. A horizontally arranged support plate is fixedly connected inside the housing. The leak detection test subsystem is fixed to the upper part of the support plate, the upper cavity drive mechanism is fixed to the lower part of the support plate, and the housing has an inlet for the test lower cavity to enter and exit the test space.

[0009] As a further limitation of the first implementation of the present invention, the sample transfer mechanism is fixed on the outer wall of the housing; or, the sample transfer mechanism is fixed on the base plate outside the test space.

[0010] As a further limitation of the first implementation of the present invention, the sample transfer mechanism is a multi-degree-of-freedom robotic arm, and the end of the multi-degree-of-freedom robotic arm is connected to a suction cup for adsorbing the sample.

[0011] As a further limitation of the first implementation of the present invention, the sample transfer mechanism includes: a horizontal driving mechanism, a sampling driving mechanism, and a suction cup; The output end of the horizontal drive mechanism is connected to the sampling drive mechanism to drive the horizontal movement of the sampling drive mechanism. The suction cup is fixed at the end of the sampling drive mechanism and can move up and down under the drive of the sampling drive mechanism to adsorb the sample.

[0012] As a further limitation of the first implementation of the present invention, it also includes a sample transfer mechanism arranged outside the test space, which is used to transfer the sample to the working area of ​​the sample moving mechanism and the sample flipping mechanism. The sample conveying mechanism includes: an upper wheel, a first drive wheel, a second drive wheel, a photoelectric switch, and a barcode scanner. The photoelectric switch and barcode scanner are connected to the outer wall of the housing or fixed to the base plate outside the test space by a bracket. The first drive wheel and the second drive wheel are fitted with a conveyor belt. The upper wheel is arranged on the upper part of the conveyor belt so that a sample passes through the conveyor belt. The photoelectric switch and barcode scanner are used to detect the sample arrival and the test surface of the strip bag.

[0013] As a further definition of the first implementation of the present invention, the sample flipping mechanism includes: a slide cylinder and a sample clamping rotation cylinder. The slide cylinder is fixed to the base plate outside the test space or to the outer wall of the machine housing. The sample clamping rotation cylinder is connected to the output end of the slide cylinder. The sample clamping rotation cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up.

[0014] As a further definition of the first implementation of the present invention, the sample flipping mechanism includes: a sliding table electric cylinder and a sample clamping rotating electric cylinder. The sliding table electric cylinder is fixed on the base plate outside the test space or fixed on the outer wall of the machine housing. The sample clamping rotating electric cylinder is connected to the output end of the sliding table electric cylinder. The sample clamping rotating electric cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up.

[0015] In the second implementation of the present invention, the leak detection test subsystem, the upper cavity driving mechanism, the upper test cavity, the lower cavity driving mechanism, the lower test cavity, the sample flipping mechanism, and the sample moving mechanism are all arranged inside the housing. The bottom plate and the housing cooperate to form a test space. A horizontally arranged support plate is fixedly connected inside the housing. The leak detection test subsystem is fixed on the upper part of the support plate, the upper cavity driving mechanism is fixed on the lower part of the support plate, and the housing has a sample inlet for the sample to enter and exit.

[0016] As a further limitation of the second implementation of the present invention, the sample transfer mechanism is fixed on the inner wall of the housing; or, the sample transfer mechanism is fixed on the base plate in the test space; or, the sample transfer mechanism is fixed on the support plate.

[0017] As a further limitation of the second implementation of the present invention, the sample transfer mechanism is a multi-degree-of-freedom robotic arm, and the end of the multi-degree-of-freedom robotic arm is connected to a suction cup for adsorbing the sample.

[0018] As a further limitation of the second implementation of the present invention, the sample transfer mechanism includes: a horizontal driving mechanism, a sampling driving mechanism, and a suction cup; The output end of the horizontal drive mechanism is connected to the sampling drive mechanism to drive the horizontal movement of the sampling drive mechanism. The suction cup is fixed at the end of the sampling drive mechanism and can move up and down under the drive of the sampling drive mechanism to adsorb the sample.

[0019] As a further limitation of the second implementation of the present invention, it also includes a sample transfer mechanism arranged in the test space, which is used to transfer the sample to the working area of ​​the sample moving mechanism and the sample flipping mechanism. The sample conveying mechanism includes: an upper wheel, a first drive wheel, a second drive wheel, a photoelectric switch, and a barcode scanner. The photoelectric switch and barcode scanner are connected to the outer wall of the housing or fixed to the base plate in the test space by a bracket. The first drive wheel and the second drive wheel are fitted with a conveyor belt. The upper wheel is arranged on the upper part of the conveyor belt so that a sample passes through the conveyor belt. The photoelectric switch and barcode scanner are used to detect the sample arrival and the test surface of the strip bag.

[0020] As a further limitation of the second implementation of the present invention, the sample flipping mechanism includes: a slide cylinder and a sample clamping rotation cylinder. The slide cylinder is fixed on the base plate in the test space, or fixed on the inner wall of the machine housing, or fixed on the support plate. The sample clamping rotation cylinder is connected to the output end of the slide cylinder. The sample clamping rotation cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up.

[0021] As a further limitation of the second implementation of the present invention, the sample flipping mechanism includes: a sliding table electric cylinder and a sample clamping rotating electric cylinder. The sliding table electric cylinder is fixed on the base plate in the test space, or fixed on the inner wall of the machine housing, or fixed on the support plate. The sample clamping rotating electric cylinder is connected to the output end of the sliding table electric cylinder. The sample clamping rotating electric cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up.

[0022] In one implementation of the present invention, the upper cavity driving mechanism is a cylinder, a hydraulic cylinder, an electric cylinder, or a gear and rack mechanism.

[0023] In one implementation of the present invention, the lower test cavity has a guide ramp for the sample to slide into the inner cavity.

[0024] In one implementation of the present invention, the lower cavity driving mechanism includes a slide and a first positioning block, the first positioning block being able to slide horizontally on the slide, and the test lower cavity being detachably connected to the first positioning block.

[0025] In one implementation of the present invention, the lower cavity driving mechanism includes an annular rail and a first positioning block, the first positioning block being able to slide horizontally on the annular rail, and the test lower cavity being detachably connected to the first positioning block.

[0026] In one implementation of the present invention, the output end of the upper cavity driving mechanism is directly and detachably connected to the test upper cavity.

[0027] In one implementation of the present invention, the output end of the upper cavity driving mechanism is detachably connected to the test upper cavity via a second positioning block.

[0028] Compared with the prior art, the beneficial effects of this utility model are: The sample transfer mechanism and sample flipping mechanism of this invention work together to achieve efficient sample operation. The sample transfer mechanism is responsible for accurately transferring the sample with the test surface facing up into the inner cavity of the lower test chamber to prepare for testing. The sample flipping mechanism can flip the sample with the non-test surface facing up to the test surface facing up, ensuring that the sample enters the testing stage in the correct state. The two work together to make the operation of the sample more efficient and orderly throughout the entire testing process, reduce manual intervention and operational errors, improve testing efficiency, and ensure the accuracy and consistency of test results.

[0029] The sample conveying mechanism of this utility model is arranged at the sample inlet of the housing, which can accurately convey the sample to the working area of ​​the sample transfer mechanism and the sample flipping mechanism. It consists of an upper wheel, a first drive wheel, a second drive wheel, a photoelectric switch and a barcode scanner. The first drive wheel and the second drive wheel are fitted with a conveyor belt. The upper wheel is arranged on the upper part of the conveyor belt to ensure the smooth passage of the sample. The photoelectric switch and barcode scanner are directly or indirectly connected to the inner wall of the housing for the detection of sample arrival and test surface and non-test surface. It can sense the sample position in a timely and accurate manner, provide accurate signals for subsequent sample operation, and ensure the smooth progress of the entire testing process.

[0030] The upper cavity driving mechanism of this invention is connected to the upper test cavity and can drive its vertical movement; the lower cavity driving mechanism is connected to the lower test cavity and can drive its horizontal movement. The two work together to ensure that the upper opening of the lower test cavity and the lower opening of the upper test cavity can be precisely matched to form a sealed test cavity. This design makes the construction of the test cavity more flexible and accurate, and the position and state of the cavity can be quickly adjusted according to the testing requirements of different samples. It provides a stable and reliable sealed environment for non-destructive leak detection testing, effectively ensuring the accuracy and stability of the test.

[0031] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0033] Figure 1 A schematic diagram of the structure of the non-destructive leak detection testing system provided in this utility model embodiment; Figure 2 This is a schematic diagram of the external appearance of the entire machine provided in an embodiment of the present utility model; Figure 3 A schematic diagram of the sample conveying mechanism provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the quick-change connection of the test chamber provided in an embodiment of the present utility model; Figure 5 A schematic diagram of the quick-change connection of the test upper cavity provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the lower test chamber when the test sample is a strip package, as provided in the embodiments of this utility model. Figure 7 A schematic diagram of the lower test chamber when the test sample is a bottle, provided for an embodiment of this utility model; The components include: 1. Electrical box; 2. Upper plate; 3. Cavity cylinder; 4. Upper test cavity; 5. Electric slide table; 6. Base plate; 7. Lower test cavity; 8. Slide table cylinder; 9. Sample clamping and rotating cylinder; 10. Sample; 11. Conveying platform; 11-1. Photoelectric switch and barcode scanner; 11-2. Upper wheel; 11-3. Conveyor belt; 11-4. First drive wheel; 11-5. Second drive wheel; 12. Pneumatic slide table; 13. Suction cup; 14. Sampling cylinder; 15. Housing; 16. First spring pressure ball; 17. Second spring pressure ball; 18. First positioning block; 19. Second positioning block; 20. Sample inlet. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0036] like Figure 1 As shown, this embodiment proposes a non-destructive leak detection testing system, including: at least one leak detection testing subsystem, a sample transfer mechanism, and a sample flipping mechanism; each leak detection testing subsystem is equipped with an upper cavity driving mechanism, a test upper cavity 4, a test lower cavity 7, and a lower cavity driving mechanism; the leak detection testing subsystem in this embodiment includes a vacuuming device and related components such as a leak detection sensor. Here, an existing leak detection subsystem is used. The output end of the upper cavity driving mechanism is connected to the test upper cavity 4 to drive the vertical movement of the test upper cavity 4; the output end of the lower cavity driving mechanism is connected to the test lower cavity 7 to drive the horizontal movement of the test lower cavity 7.

[0037] In this embodiment, the sample flipping mechanism is used to flip the sample 10 with the non-test surface facing upwards, and the sample moving mechanism is used to move the sample 10 with the test surface facing upwards into the inner cavity of the lower test cavity 7. The upper opening of the inner cavity of the lower test cavity 7 cooperates with the lower opening of the inner cavity of the upper test cavity 4 to form a sealed test cavity. It should be noted that the test surface and non-test surface are set according to the requirements. When it is necessary to test a certain surface of a sample, then that surface is the test surface, and the other surface opposite to the test surface is the non-test surface. This depends entirely on the specific test requirements, which will not be elaborated here.

[0038] In this embodiment, the leak detection test subsystem is arranged inside the housing 15. The housing 15 is connected to the base plate 6 to form a test space. A horizontally arranged upper plate 2 (i.e., support plate) is fixedly connected inside the housing 15. The leak detection test subsystem is fixed on the upper part of the upper plate 2, and the upper cavity drive mechanism is fixed on the lower part of the upper plate 2.

[0039] It should be noted that the housing 15 in this embodiment can be implemented in two ways: The first type is where the leak detection test subsystem, the upper cavity drive mechanism and the test upper cavity 4 are arranged inside the housing 15, and a part of the base plate 6 cooperates with the housing 15 to form a test space. In use, the test lower cavity 7 enters and exits the test space through the sample inlet 20 on the housing. At this time, the sample flipping mechanism, the sample conveying mechanism and the sample moving mechanism are all arranged outside the housing 20. The second type involves a leak detection subsystem, an upper cavity drive mechanism, an upper test cavity 4, a lower cavity drive mechanism, a lower test cavity 7, a sample flipping mechanism, a sample conveying mechanism 11, and a sample shifting mechanism, all housed within the casing 15. The base plate 6 cooperates with the casing 15 to form a test space. During use, the sample inlet 20 is only used for the entry and exit of the sample 10; all other operations are completed within the casing. Figure 2 The diagram shown illustrates the second implementation method.

[0040] In this embodiment, the sample flipping mechanism includes: a slide cylinder 8 and a sample clamping rotary cylinder 9 (which can also be replaced by a slide electric cylinder or a sample clamping rotary cylinder, as long as it can achieve linear drive and rotary drive, which will not be described in detail here). The sample clamping rotary cylinder 9 is connected to the output end of the slide cylinder 8, and the sample clamping rotary cylinder 9 can drive the clamp to rotate to flip the sample 10.

[0041] In this embodiment, the sample transfer mechanism includes a horizontal drive mechanism, a sampling drive mechanism, and a suction cup 13. The output end of the horizontal drive mechanism is connected to the sampling drive mechanism to drive the sampling drive mechanism to move horizontally. The suction cup 13 is fixed to the end of the sampling drive mechanism and can move up and down under the drive of the sampling drive mechanism to adsorb the sample.

[0042] In the first implementation of the housing 15, the slide cylinder 8 can be directly fixed to the base plate 6 or fixed to the outer wall of the housing 15; in the second implementation of the housing 15, the slide cylinder 8 can be directly fixed to the base plate 6 or fixed to the inner wall of the housing 15.

[0043] In this embodiment, preferably, as follows: Figure 1 As shown, the horizontal drive mechanism adopts a pneumatic slide table 12, and the sampling drive mechanism adopts a sampling cylinder 14. The sampling cylinder 14 can slide horizontally on the pneumatic slide table 12. The end of the sampling cylinder 14 is connected to a suction cup 13, which can drive the suction cup 13 to move up and down.

[0044] In the first implementation of the housing 15, the pneumatic slide 12 is fixed on the outer wall of the housing or on the base plate 6 (which is indirectly connected to the base plate 6 via a bracket); in the second implementation of the housing 15, the pneumatic slide 12 is fixed on the upper plate or on the base plate 6 (which is indirectly connected to the base plate 6 via a bracket).

[0045] Understandably, the purpose of the pneumatic slide 12 here is to achieve horizontal linear movement, which can also be achieved by using a hydraulic cylinder, electric cylinder, or gear rack and pinion mechanism; similarly, the purpose of the sampling cylinder 14 is to achieve vertical linear movement, which can also be achieved by using a hydraulic cylinder, electric cylinder, or gear rack and pinion mechanism, which will not be elaborated here.

[0046] More specifically, the sample transfer mechanism is also used to move qualified samples 10 to the qualified area and unqualified samples 10 to the unqualified area, thereby achieving the regularization and classification of samples 10 without manual operation and greatly improving work efficiency.

[0047] Optionally, other implementations include a remote terminal that communicates with a control terminal (i.e., the control terminal located in the local device); or, the remote terminal directly and wirelessly connects to the leak detection subsystem (achieving direct remote control without using the local control terminal); both the remote terminal and the control terminal are equipped with corresponding displays (e.g., the control terminal can use a touch screen, and the remote terminal can use a remote operation screen). During operation, the control window is automatically identified, and only one of the remote terminal or the control terminal is allowed to operate at any given time (simultaneous commands are not allowed). The remote terminal configuration enables remote control and remote data viewing, greatly improving detection efficiency and truly realizing remote testing.

[0048] In this embodiment, preferably, a sample conveying mechanism is also included. This mechanism conveys the sample 10 to the working areas of the sample transfer mechanism and the sample flipping mechanism. Different samples 10 are input into the sample conveying mechanism through the sample inlet 20 of the housing 15, such as... Figure 2 As shown.

[0049] More specifically, the sample transfer mechanism, such as Figure 3As shown, the device includes an upper wheel 11-2, a first drive wheel 11-4, a second drive wheel 11-5, and a photoelectric switch and barcode scanner 11-1 (the barcode scanner is used to confirm the test surface of the bag; it is not needed for bottles). The first drive wheel 11-4 and the second drive wheel 11-5 are fitted with a conveyor belt 11-3. The conveyor belt 11-3 carries the sample 10 forward. The upper wheel 11-2 is arranged on the upper part of the conveyor belt 11-3 so that one sample can pass through the conveyor belt 11-3 (restricting the passage of sample 10 so that only one sample 10 can pass through). The photoelectric switch and barcode scanner 11-1 is used to detect the sample's arrival. The specific working process is as follows: the first drive wheel 11-4 and the second drive wheel 11-5 drive the conveyor belt 11-3 to rotate. The conveyor belt 11-3 carries the sample forward. When the sample encounters the upper wheel 11-2, the sample can only pass through one wheel. The conveyor belt 11-3 continues to carry the sample forward. When the sample runs under the photoelectric switch and barcode scanner 11-1, the photoelectric switch and barcode scanner 11-1 detects the sample, and then the leak detection test subsystem grabs and executes the next action.

[0050] In the first implementation of the housing 15, the photoelectric switch and barcode scanner 11-1 are connected to the outer wall of the housing or to the base plate 6 outside the test space (via a bracket); in the second implementation of the housing 15, the photoelectric switch and barcode scanner 11-1 are directly or indirectly connected to the inner wall of the housing 15, or to the base plate 6 inside the test space via a bracket.

[0051] In this embodiment, preferably, a sealing ring is arranged around the upper opening of the inner cavity of the lower test cavity 7 and / or around the lower opening of the inner cavity of the upper test cavity 4.

[0052] In this embodiment, each test host may include multiple leak detection test subsystems. Each leak detection test subsystem includes a corresponding upper cavity drive mechanism, a test upper cavity 4, a test lower cavity 7, and a lower cavity drive mechanism, enabling independent testing of the sample 10. It can be used for online testing on the production line without the need for dedicated personnel to perform the testing. Multiple devices working together can achieve large-scale testing on the production line.

[0053] In this embodiment, preferably, the leak detection test subsystem is arranged inside the electrical box 1. The electrical box 1 and the upper cavity drive mechanism are indirectly connected through the upper plate 2 (i.e., the support plate). In this embodiment, the upper plate 2 is a horizontal plate. The electrical box 1 is arranged on the upper surface of the upper plate 2, and the upper cavity drive mechanism is fixed on the lower surface of the upper plate 2. Alternatively, it can be understood that in some other implementations, the bottom of the electrical box 1 is directly connected to the upper cavity drive mechanism.

[0054] In this embodiment, preferably, the upper cavity driving mechanism is a cavity cylinder 3. Optionally, in other implementations, the upper cavity driving mechanism can be a linear driving mechanism such as a hydraulic cylinder, an electric cylinder, or a gear and rack mechanism.

[0055] In this embodiment, preferably, the lower cavity driving mechanism includes an electric slide table 5 and a first positioning block 18. The first positioning block 18 can slide horizontally on the electric slide table 5, and the test lower cavity 7 is detachably connected to the first positioning block 18. It is understood that this embodiment preferably uses an electric slide table 5 to improve control accuracy (it is a reciprocating electric slide table 5 structure, which can stop at any position; stopping at any position is not limited to motor control, but can also be achieved using limit switches, or a limit mechanism can be set on the electric slide table 5; all of these are implemented using existing technology and will not be elaborated further). Alternatively, in other implementations, a pneumatic slide table or a circular track can also be used, as long as the first positioning block 18 can slide horizontally; these will not be elaborated further.

[0056] In this embodiment, the electric slide 5 is fixed on the base plate 6 to ensure the stability of the electric slide 5.

[0057] More specifically, such as Figure 4 As shown, at least two first spring pressure beads 16 (including a spring and pressure beads connected to the spring, with a portion of the pressure beads protruding from the outer wall of the first positioning block 18 and the spring arranged in the opening of the outer wall) are arranged on the outer wall of the first positioning block 18. The first spring pressure beads 16 are used to cooperate with the first positioning groove of the test lower cavity 7 to realize the detachable connection of the test lower cavity 7. It is understood that in some other implementations, other detachable connection methods can also be used, such as bolt connection, snap connection, etc., which will not be described in detail here, as long as the test lower cavity 7 can be disassembled and replaced.

[0058] In this embodiment, preferably, the output end of the upper cavity driving mechanism (i.e., the cavity cylinder 3 preferred in this embodiment) is detachably connected to the test upper cavity 4 via the second positioning block 19. More specifically, as Figure 5 As shown, at least two second spring pressure beads 17 (including a spring and pressure beads connected to the spring, with a portion of the pressure beads protruding from the outer wall of the second positioning block 19, and the spring arranged in the opening of the outer wall of the test upper cavity 4) are arranged on the outer side wall of the second positioning block 19. The second spring pressure beads 17 are used to cooperate with the second positioning groove of the test upper cavity 4 to achieve a detachable connection of the test upper cavity 4. It is understood that in some other implementations, other detachable connection methods can also be used, such as bolt connection, snap connection, etc., which will not be described in detail here, as long as the test upper cavity 4 can be disassembled and replaced.

[0059] In some other implementations, the output end of the upper cavity drive mechanism can be directly connected to the test upper cavity 4, which can also be a detachable method. However, the second positioning block 19 is not set, and the existing detachable connection method can be used. This will not be elaborated here.

[0060] This utility model achieves a modular design of the upper test cavity 4 and the lower test cavity 7 through the design of the first positioning block 18 and the second positioning block 19. The upper test cavity 4 and the lower test cavity 7 can be quickly replaced, which can adapt to different types of products and solves the problem of frequent replacement of the upper test cavity 4 and the lower test cavity 7 in the existing solution.

[0061] like Figure 6 As shown, when the test sample is a strip-shaped sample 10, the inner cavity of the lower test chamber 7 is provided with a guide slope, which allows the strip-shaped sample 10 to slide into the inner cavity of the lower test chamber 7, achieving rapid positioning of the strip-shaped sample. Figure 7 As shown, when testing the bottle-shaped sample 10, the lower test cavity 7 has three holes to achieve stable installation of the bottle-shaped sample 10. These three holes can be changed to one hole or multiple holes. Those skilled in the art can customize the inner cavity shape of the lower test cavity 7 according to the specific type of the sample 10, which will not be elaborated here.

[0062] In this embodiment, the pneumatic slide 12 is fixed on the upper plate 2, or the pneumatic slide 12 can also be fixed on the housing of the electrical box 1. It is understood that the horizontal drive mechanism in this embodiment can also be replaced by other drive methods, such as electric slide, hydraulic cylinder drive mechanism, electric cylinder drive mechanism or gear rack drive mechanism and other linear drive mechanisms, which will not be described in detail here.

[0063] The specific working method of the non-destructive leak detection system in this embodiment includes the following process: Place the sample 10 on the conveying platform 11 (i.e., the sample conveying mechanism; in this embodiment, a belt conveying mechanism can be selected); When the sample 10 is the test surface, the slide cylinder 8 and the sample clamping rotary cylinder 9 do not operate. When the sample 10 is not the test surface, the slide cylinder 8 extends and the sample clamping rotary cylinder 9 drives the clamp to clamp and flip the sample 10 so that the test surface of the sample 10 faces upward. The suction cup 13 holds the sample 10, and the pneumatic slide 12 moves the sample 10 to the lower cavity through the sampling cylinder 14 and the suction cup 13. The test lower cavity 7 can be replaced according to different samples 10. The electric slide 5 moves the test lower cavity 7 to the position directly below the test upper cavity 4. The cavity cylinder 3 drives the upper cavity to fall, so that the inner cavity of the test upper cavity 4 and the test lower cavity 7 are closed, accommodating the sample 10. The leak detection test subsystem performs leak detection test on the sample 10 in the cavity. After the test, the sample 10 is moved to the set position by the sample moving mechanism. In this embodiment, the three completely independent leak detection test subsystems correspond to the three test upper cavity 4 and test lower cavity 7, and each leak detection test subsystem is completely independent.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A non-destructive leak detection system, characterized in that, include: The system includes a base plate, at least one leak detection test subsystem, a sample transfer mechanism, and a sample flipping mechanism. Each leak detection test subsystem is equipped with an upper cavity drive mechanism, a test upper cavity, a test lower cavity, and a lower cavity drive mechanism. The lower cavity drive mechanism is fixedly connected to the base plate, the leak detection test subsystem is connected to the upper cavity drive mechanism, and the output end of the upper cavity drive mechanism is connected to the test upper cavity to drive the vertical movement of the test upper cavity; The output end of the lower cavity drive mechanism is connected to the lower test cavity to drive the lower test cavity to move horizontally. The sample flipping mechanism is used to flip the sample with the non-test surface facing upwards. The sample moving mechanism is used to move the sample with the test surface facing upward into the inner cavity of the lower test cavity. The upper opening of the inner cavity of the lower test cavity is connected to the lower opening of the inner cavity of the upper test cavity to form a sealed test cavity.

2. The non-destructive leak detection system as described in claim 1, characterized in that, The leak detection subsystem is located inside an electrical box, the bottom of which is connected to the upper cavity drive mechanism.

3. The non-destructive leak detection system as described in claim 1, characterized in that, The leak detection test subsystem, the upper cavity drive mechanism, and the test upper cavity are arranged inside the housing. The housing is connected to a part of the base plate to form a test space. A horizontally arranged support plate is fixedly connected inside the housing. The leak detection test subsystem is fixed to the upper part of the support plate, and the upper cavity drive mechanism is fixed to the lower part of the support plate. The housing has an inlet for the test lower cavity to enter and exit the test space.

4. The non-destructive leak detection system as described in claim 3, characterized in that, The sample transfer mechanism is fixed to the outer wall of the housing; or, the sample transfer mechanism is fixed to the base plate outside the test space.

5. The non-destructive leak detection system as described in claim 4, characterized in that, The sample transfer mechanism is a multi-degree-of-freedom robotic arm, and the end of the multi-degree-of-freedom robotic arm is connected to a suction cup for adsorbing the sample. or, The sample transfer mechanism includes: a horizontal drive mechanism, a sampling drive mechanism, and a suction cup; The output end of the horizontal drive mechanism is connected to the sampling drive mechanism to drive the horizontal movement of the sampling drive mechanism. The suction cup is fixed at the end of the sampling drive mechanism and can move up and down under the drive of the sampling drive mechanism to adsorb the sample.

6. The non-destructive leak detection system as described in claim 3, characterized in that, It also includes a sample transfer mechanism arranged outside the test space, which is used to transfer the sample to the working area of ​​the sample moving mechanism and the sample flipping mechanism. The sample conveying mechanism includes: an upper wheel, a first drive wheel, a second drive wheel, a photoelectric switch, and a barcode scanner. The photoelectric switch and barcode scanner are connected to the outer wall of the housing or fixed to the base plate outside the test space by a bracket. The first drive wheel and the second drive wheel are fitted with a conveyor belt. The upper wheel is arranged on the upper part of the conveyor belt so that a sample passes through the conveyor belt. The photoelectric switch and barcode scanner are used to detect the sample arrival and the test surface of the strip bag.

7. The non-destructive leak detection system as described in claim 3, characterized in that, The sample flipping mechanism includes a slide cylinder and a sample clamping rotation cylinder. The slide cylinder is fixed to the base plate outside the test space or to the outer wall of the machine housing. The sample clamping rotation cylinder is connected to the output end of the slide cylinder. The sample clamping rotation cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up. Alternatively, the sample flipping mechanism includes a sliding table electric cylinder and a sample clamping rotary electric cylinder. The sliding table electric cylinder is fixed to the base plate outside the test space or to the outer wall of the machine housing. The sample clamping rotary electric cylinder is connected to the output end of the sliding table electric cylinder. The sample clamping rotary electric cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up.

8. The non-destructive leak detection system as described in claim 1, characterized in that, The leak detection subsystem, upper cavity drive mechanism, upper test cavity, lower cavity drive mechanism, lower test cavity, sample flipping mechanism, and sample moving mechanism are all arranged inside the housing. The base plate and the housing cooperate to form a test space. A horizontally arranged support plate is fixedly connected inside the housing. The leak detection subsystem is fixed to the upper part of the support plate, and the upper cavity drive mechanism is fixed to the lower part of the support plate. The housing has a sample inlet for the sample to enter and exit.

9. The non-destructive leak detection system as described in claim 8, characterized in that, The sample transfer mechanism is fixed to the inner wall of the housing; or, the sample transfer mechanism is fixed to the base plate in the test space; or, the sample transfer mechanism is fixed to the support plate.

10. The non-destructive leak detection system as described in claim 9, characterized in that, The sample transfer mechanism is a multi-degree-of-freedom robotic arm, and the end of the multi-degree-of-freedom robotic arm is connected to a suction cup for adsorbing the sample. or, The sample transfer mechanism includes: a horizontal drive mechanism, a sampling drive mechanism, and a suction cup; The output end of the horizontal drive mechanism is connected to the sampling drive mechanism to drive the horizontal movement of the sampling drive mechanism. The suction cup is fixed at the end of the sampling drive mechanism and can move up and down under the drive of the sampling drive mechanism to adsorb the sample.

11. The non-destructive leak detection system as described in claim 8, characterized in that, It also includes a sample conveying mechanism arranged in the test space, which is used to convey the sample to the working area of ​​the sample moving mechanism and the sample flipping mechanism. The sample conveying mechanism includes: an upper wheel, a first drive wheel, a second drive wheel, a photoelectric switch, and a barcode scanner. The photoelectric switch and barcode scanner are connected to the outer wall of the housing or fixed to the base plate in the test space by a bracket. The first drive wheel and the second drive wheel are fitted with a conveyor belt. The upper wheel is arranged on the upper part of the conveyor belt so that a sample passes through the conveyor belt. The photoelectric switch and barcode scanner are used to detect the sample arrival and the test surface of the strip bag.

12. The non-destructive leak detection system as described in claim 8, characterized in that, The sample flipping mechanism includes a slide cylinder and a sample clamping rotary cylinder. The slide cylinder is fixed to the base plate in the test space, or to the inner wall of the housing, or to the support plate. The sample clamping rotary cylinder is connected to the output end of the slide cylinder. The sample clamping rotary cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up. Alternatively, the sample flipping mechanism includes a sliding table electric cylinder and a sample clamping rotary electric cylinder. The sliding table electric cylinder is fixed to the base plate in the test space, or to the inner wall of the housing, or to the support plate. The sample clamping rotary electric cylinder is connected to the output end of the sliding table electric cylinder. The sample clamping rotary electric cylinder can drive the clamp to rotate so as to flip the sample with the non-test surface facing up to the test surface facing up.

13. The non-destructive leak detection system as described in claim 1, characterized in that, The upper cavity driving mechanism is a cylinder, hydraulic cylinder, electric cylinder, or gear and rack mechanism. Alternatively, the lower test cavity may have a guide ramp for the sample to slide into the cavity; Alternatively, the lower cavity driving mechanism includes a slide and a first positioning block, the first positioning block being able to slide horizontally on the slide, and the test lower cavity being detachably connected to the first positioning block; Alternatively, the lower cavity driving mechanism includes an annular rail and a first positioning block, the first positioning block being able to slide horizontally on the annular rail, and the test lower cavity being detachably connected to the first positioning block; Alternatively, the output end of the upper cavity driving mechanism can be directly and detachably connected to the test upper cavity; Alternatively, the output end of the upper cavity driving mechanism can be detachably connected to the test upper cavity via a second positioning block.

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