Air tightness detection structure of pneumatic manipulator

Abstract

The utility model discloses an air tightness detection structure for a pneumatic manipulator, which belongs to the technical field of air tightness detection structures and comprises a detection box, a communication cylinder, an air inlet pipe, an air outlet pipe, an air inlet pipe, an air outlet pipe, an air outlet pipe, an air inlet pipe, an air outlet pipe, an air inlet pipe and an air outlet pipe, and the hydraulic air plug mechanism is used for closing or opening a port of the communication cylinder, and air pressure sensors are arranged in the inflation cavity and the detection cavity. The technical key points are as follows: an external air pump is used for pumping air into an air inflation cavity, so that the air in the air inflation cavity reaches a calibrated air pressure value, a hydraulic air plug mechanism is opened during testing, and after the air pressure in the whole detection box is balanced, the air tightness can be judged by comparing the reading of an air pressure sensor at the moment with the reading during non-defective product detection. If the air tightness is not good, part of the gas enters the object to be detected, and the air pressure in the detection box is small.

Description

Technical Field

[0001] The utility model relates to the technical field of airtightness detection structures, in particular to an airtightness detection structure for a pneumatic manipulator. Background Technique

[0002] Airtightness detection is applied to the strict integrity assessment of aircraft, automobile shells, ships and internal containers, and is a quality control application developed to improve the airtightness of vehicles, aircraft, ships, etc. for the transportation department, military department and basic industries. Since a pneumatic manipulator uses air pressure as the power source, it is also very necessary to ensure the airtightness of its internal related structures, and airtightness detection is required.

[0003] Existing airtightness detection measures are diverse. Using a special mold for detection is a relatively common detection method. The airtightness detector mold is a special mold used to detect the airtightness of products, which can help manufacturers quickly and accurately detect the airtightness of products, thereby ensuring the quality and performance of products. However, the airtightness detector mold needs to be specially customized for different detection objects. For manipulators with different shapes and sizes, the engineering volume of making a special mold is very large, which will lead to a high detection cost, and the mold may be difficult to continue to be used later, resulting in a waste of resources. Therefore, in view of the above problems, an airtightness detection structure for a pneumatic manipulator is proposed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an airtightness detection structure for a pneumatic manipulator. The airtightness detection structure pumps gas into the inflation cavity through an external air pump, and controls the intake and exhaust through the air inlet and exhaust port, so that the gas in the inflation cavity reaches a calibrated air pressure value. Subsequently, the object to be detected is placed into the detection cavity. During the test, the hydraulic air plug mechanism is opened. At this time, the connecting cylinder connects the inflation cavity and the detection cavity. After the air pressure in the entire detection box is balanced, by comparing the readings of the air pressure sensor with the readings during the detection of good products, the airtightness can be judged. If the airtightness is not good, some gas will enter the object to be detected, resulting in a small air pressure in the detection box. This detection method can be applied to the airtightness detection work of manipulators of various sizes and shapes, has strong versatility, simple structure and low practical cost, and solves the technical problems in the prior art that when using an airtightness detector mold for detection, a special mold needs to be customized, resulting in a very large engineering volume, high detection cost, and the mold may be difficult to continue to be used later, resulting in a waste of resources.

[0005] The technical solution adopted by the embodiment of the present application to solve its technical problems is:

[0006] A pneumatic manipulator air tightness detection structure comprises a detection box, which is provided with a front partition and a rear partition, the interior of the detection box is divided into an inflation chamber and a detection chamber, a connecting tube, which is respectively airtightly connected to the front partition and the rear partition for connecting the inflation chamber and the detection chamber, and a hydraulic air plug mechanism for closing or opening the connecting tube port, wherein air pressure sensors are provided in the inflation chamber and the detection chamber, and an air inlet and an exhaust port are airtightly connected at the rear side of the detection box, and both the air inlet and the exhaust port are connected to the inflation chamber.

[0007] Through the above-mentioned structural form, an external air pump is used to pump gas into the inflation chamber, and the air intake and exhaust are controlled through the air inlet and exhaust port, so that the gas in the inflation chamber reaches a calibrated air pressure value, and then the object to be detected is placed in the detection chamber. During the test, the hydraulic air plug mechanism is opened. At this time, the connecting tube connects the inflation chamber and the detection chamber. After the air pressure in the entire detection box is balanced, the air tightness can be judged by comparing the reading of the air pressure sensor at this time with the reading during the good product detection. If the air tightness is not good, part of the gas will enter the object to be detected, resulting in low air pressure in the detection box. This detection method can be applied to air tightness detection of manipulators of various sizes and shapes, has strong versatility, simple structure, and low practical cost.

[0008] In one possible implementation, the hydraulic air plug mechanism includes a hydraulic cylinder disposed in an inflation chamber, wherein the hydraulic cylinder output shaft is fixedly connected to a rubber plug via a coupling, wherein the coupling is slidably disposed in a connecting tube, and the rubber plug can fit tightly with a connecting tube port located in the detection chamber.

[0009] Through the above-mentioned structural form, the rubber plug can be driven by a hydraulic cylinder to move, so that the rubber plug is close to or away from the port of the connecting tube, thereby controlling the opening and closing of the connecting tube, providing the necessary structural basis for the normal detection work.

[0010] In a possible implementation, the hydraulic air plug mechanism also includes a guide member, which includes a strip slider and a guide rod, wherein the strip slider is fixedly connected to the end of the connecting shaft, the guide rod is fixedly connected to the rear partition, and both ends of the strip slider are slidably sleeved on the guide rod.

[0011] Through the above-mentioned structural form, the strip slider can slide in the guide rod to provide a restraining effect on the forward and backward movement of the connecting shaft, thereby preventing it from deviating during the movement and making it impossible for the rubber plug to fit tightly with the connecting tube.

[0012] In one possible implementation, the air inlet and the exhaust port have the same structural composition, both including an air pipe and a one-way solenoid valve tightly connected thereto, wherein the one-way solenoid valve of the air inlet only allows gas to enter the inflation chamber, and the one-way solenoid valve of the exhaust port only allows gas to discharge from the inflation chamber.

[0013] With the above structural form, the intake and exhaust conditions in the inflation chamber can be controlled by a one-way solenoid valve. Through adjustment operations, the gas in the inflation chamber can reach the calibrated air pressure value during detection, ensuring that the conditions for each detection remain unchanged, and having the effect of reducing errors.

[0014] In a possible implementation manner, a central through-port is provided on the front end plate of the detection box, and a sealed door that can completely cover the through-port is rotatably provided on the front end of the detection box.

[0015] With the above structural form, the setting of the sealed door provides a necessary structural basis for the user to place and take out the object to be detected.

[0016] In a possible implementation manner, a pressure relief port communicating with the detection chamber is hermetically connected to the side of the detection box, and a sealed cover is threadedly connected to the pressure relief port.

[0017] With the above structural form, when the sealed door is closed, it may cause a change in the air pressure in the detection chamber. Therefore, the pressure relief port provided can ensure that the detection chamber is always in an atmospheric pressure state when the sealed door is closed, and can effectively reduce the detection error.

[0018] In a possible implementation manner, a baffle is installed in the detection chamber adjacent to the front partition, and a number of air holes are provided on the baffle.

[0019] With the above structural form, the baffle can play a role in restricting the placement space of the object to be detected, preventing the structure of some objects to be detected from pressing against the rubber plug and making it unable to open normally.

[0020] In a possible implementation manner, the oil delivery pipe hermetically connected to the hydraulic cylinder passes through the side plate of the detection box and extends outside the box, and the outer wall of the oil delivery pipe is hermetically connected to the side plate of the detection box.

[0021] With the above structural form, while ensuring the tightness of the inflation chamber, it provides a necessary connection basis for the connection between the hydraulic cylinder and the external hydraulic system.

[0022] In summary, the present utility model includes the following beneficial technical effects:

[0023] An external air pump is used to pump gas into the inflation chamber, and the air intake and exhaust are controlled through the air inlet and exhaust ports so that the gas in the inflation chamber reaches a calibrated air pressure value. The object to be tested is then placed in the test chamber. During the test, the hydraulic air plug mechanism is opened, and the connecting tube connects the inflation chamber and the test chamber. After the air pressure in the entire test box is balanced, the air tightness can be judged by comparing the reading of the air pressure sensor at this time with the reading during the good product test. If the air tightness is not good, part of the gas will enter the object to be tested, resulting in low air pressure in the test box. This detection method can be applied to air tightness detection of manipulators of various sizes and shapes. It has strong versatility, simple structure and low practical cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0027] Figure 3 It is a partial structural schematic diagram of the utility model;

[0028] Figure 4 It is a schematic diagram of the structure of the hydraulic gas plug mechanism of the utility model.

[0029] In the figure: 1. detection box; 11. airtight door; 12. baffle; 121. air hole; 101. inflation chamber; 102. detection chamber; 2. front partition; 3. rear partition; 4. connecting tube; 5. air pressure sensor; 61. air inlet; 62. exhaust port; 601. air pipe; 602. one-way solenoid valve; 7. hydraulic air plug mechanism; 71. hydraulic cylinder; 711. oil pipeline; 72. coupling; 73. rubber plug; 74. guide member; 741. strip slider; 742. guide rod; 8. pressure relief port; 81. airtight cover. DETAILED DESCRIPTION

[0030] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0031] like Figure 1 - Figure 2As shown in the figure, an airtightness detection structure of a pneumatic manipulator provided in this embodiment includes a detection box 1, in which a front partition 2 and a rear partition 3 are provided. The interior of the detection box 1 is divided into an inflation chamber 101 and a detection chamber 102. A connecting cylinder 4 is hermetically connected to the front partition 2 and the rear partition 3 respectively to connect the inflation chamber 101 and the detection chamber 102. A hydraulic air plug mechanism 7 is used to close or open the port of the connecting cylinder 4. Among them, air pressure sensors 5 are provided in both the inflation chamber 101 and the detection chamber 102. An air inlet 61 and an air outlet 62 are hermetically connected to the rear side of the detection box 1, and both the air inlet 61 and the air outlet 62 are connected to the inflation chamber 101. Through the above structural form, an external air pump is used to pump gas into the inflation chamber 101, and the intake and exhaust are controlled through the air inlet 61 and the air outlet 62, so that the gas in the inflation chamber 101 reaches a calibrated air pressure value. Then, the object to be detected is placed in the detection chamber 102. During the test, the hydraulic air plug mechanism 7 is opened. At this time, the connecting cylinder 4 connects the inflation chamber 101 and the detection chamber 102. After the air pressure in the entire detection box 1 is balanced, by comparing the readings of the air pressure sensor 5 at this time with the readings during the detection of good products, the airtightness can be judged. If the airtightness is not good, some gas will enter the object to be detected, resulting in a small air pressure in the detection box 1. This detection method can be applied to the airtightness detection of manipulators of various sizes and shapes, has strong versatility, and has a simple structure and low practical cost.

[0032] As Figure 3 - Figure 4 As shown in the figure, the hydraulic air plug mechanism 7 includes a hydraulic cylinder 71 provided in the inflation chamber 101. The output shaft of the hydraulic cylinder 71 is fixedly connected with a rubber plug 73 through a coupling shaft 72. Among them, the coupling shaft 72 is slidably arranged in the connecting cylinder 4, and the rubber plug 73 can be closely attached to the port of the connecting cylinder 4 located in the detection chamber 102. Through the above structural form, the hydraulic cylinder 71 can be used to drive the rubber plug 73 to move, so that the rubber plug 73 fits or moves away from the port of the connecting cylinder 4, thereby controlling the on-off of the connecting cylinder 4 and providing a necessary structural basis for the normal progress of the detection work.

[0033] In addition, the hydraulic air plug mechanism 7 further includes a guiding member 74. The guiding member 74 includes a strip-shaped slider 741 and a guide rod 742. Among them, the strip-shaped slider 741 is fixedly connected to the end of the coupling shaft 72, and the guide rod 742 is fixedly connected to the rear partition 3, and both ends of the strip-shaped slider 741 are slidably sleeved on the guide rod 742. Through the above structural form, the movement of the coupling shaft 72 can be restricted by the sliding of the strip-shaped slider 741 in the guide rod 742, avoiding deviation during the movement and preventing the rubber plug 73 from not being closely attached to the connecting cylinder 4.

[0034] As Figure 3As shown in the figure, both the air inlet 61 and the air outlet 62 have the same structure, which includes a trachea 601 and a one-way solenoid valve 602 hermetically connected thereto. Among them, the one-way solenoid valve 602 of the air inlet 61 only allows gas to enter the inflation chamber 101, and the one-way solenoid valve 602 of the air outlet 62 only allows gas to discharge from the inflation chamber 101. Through the above structural form, the one-way solenoid valve 602 can be used to control the intake and exhaust conditions in the inflation chamber 101. Through adjustment operations, the gas in the inflation chamber 101 can reach the calibrated air pressure value during detection, ensuring that the conditions for each detection remain unchanged, and having the effect of reducing errors.

[0035] As Figure 1 shown, a central through hole is provided on the front panel of the detection box 1, and a sealed door 11 that can completely cover the through hole is rotatably arranged at the front end of the detection box 1. Through the above structural form, the setting of the sealed door 11 provides a necessary structural basis for the user to take and place the object to be detected.

[0036] In addition, a pressure relief port 8 communicating with the detection chamber 102 is hermetically connected to the side of the detection box 1, and a sealed cover 81 is threadedly connected to the pressure relief port 8. Through the above structural form, when the sealed door 11 is closed, the air pressure in the detection chamber 102 may change. Therefore, the pressure relief port 8 provided can ensure that the detection chamber 102 is always in an atmospheric pressure state when the sealed door 11 is closed, effectively reducing the detection error.

[0037] As Figure 1 - Figure 2 shown, a baffle 12 is installed in the detection chamber 102 adjacent to the front partition 2, and a number of air holes 121 are provided on the baffle 12. Through the above structural form, the baffle 12 can be used to limit the placement space of the object to be detected, preventing the structure of some objects to be detected from pressing against the rubber plug 73 and making it unable to open normally.

[0038] As Figure 4 shown, the oil delivery pipe 711 hermetically connected to the hydraulic cylinder 71 passes through the side plate of the detection box 1 and extends outside the box, and the outer wall of the oil delivery pipe 711 is hermetically connected to the side plate of the detection box 1. Through the above structural form, while ensuring the airtightness of the inflation chamber 101, it provides a necessary connection basis for the connection between the hydraulic cylinder 71 and the external hydraulic system.

[0039] The working principle and working process of the present utility model:

[0040] An external air pump pumps gas into the inflation chamber 101, and the intake and exhaust are controlled through the intake port 61 and the exhaust port 62, so that the gas in the inflation chamber 101 reaches a calibrated air pressure value. Subsequently, the object to be detected is placed into the detection chamber 102. During the test, the hydraulic air plug mechanism 7 is opened. At this time, the connecting cylinder 4 connects the inflation chamber 101 and the detection chamber 102. After the air pressure in the entire detection box 1 is balanced, by comparing the reading of the air pressure sensor 5 at this time with the reading during the detection of good products, the airtightness can be judged. If the airtightness is not good, some gas will enter the object to be detected, resulting in a smaller air pressure in the detection box 1. This detection method can be applied to the airtightness detection work of manipulators of various sizes and shapes, has strong versatility, and has a simple structure and low practical cost.

[0041] In addition, when the closed door 11 is closed, it may cause a change in the air pressure in the detection chamber 102. Therefore, the pressure relief port 8 is provided to ensure that the detection chamber 102 is always in an atmospheric pressure state when the closed door 11 is closed, which can effectively reduce the detection error.

[0042] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A pneumatic manipulator air tightness detection structure, characterized in that: include: A detection box (1) is provided with a front partition (2) and a rear partition (3), wherein the interior of the detection box (1) is divided into an inflation chamber (101) and a detection chamber (102); A connecting tube (4) which is respectively and hermetically connected to the front baffle (2) and the rear baffle (3) to connect the inflation chamber (101) and the detection chamber (102); A hydraulic gas plug mechanism (7) for closing or opening the port of the connecting tube (4); Wherein, an air pressure sensor (5) is provided in both the inflation chamber (101) and the detection chamber (102); an air inlet (61) and an air outlet (62) are hermetically connected to the rear side of the detection box (1); and both the air inlet (61) and the air outlet (62) are in communication with the inflation chamber (101).

2. The air tightness detection structure of a pneumatic manipulator according to claim 1, characterized in that: The hydraulic gas plug mechanism (7) comprises a hydraulic cylinder (71) arranged in the inflation chamber (101), and the output shaft of the hydraulic cylinder (71) is fixedly connected to a rubber plug (73) via a connecting shaft (72); The connecting shaft (72) is slidably arranged in the connecting tube (4), and the rubber stopper (73) can be tightly fitted with the port of the connecting tube (4) located in the detection cavity (102).

3. The air tightness detection structure of a pneumatic manipulator according to claim 2 is characterized in that: The hydraulic gas plug mechanism (7) also includes a guide member (74), wherein the guide member (74) includes a strip slider (741) and a guide rod (742), wherein the strip slider (741) is fixedly connected to the end of the connecting shaft (72), the guide rod (742) is fixedly connected to the rear partition (3), and both ends of the strip slider (741) are slidably sleeved on the guide rod (742).

4. The air tightness detection structure of a pneumatic manipulator according to claim 1, characterized in that: The air inlet (61) and the air outlet (62) have the same structure, and both include an air pipe (601) and a one-way solenoid valve (602) hermetically connected thereto; The one-way solenoid valve (602) of the air inlet (61) only allows gas to enter the inflation chamber (101), and the one-way solenoid valve (602) of the air outlet (62) only allows gas to exit the inflation chamber (101).

5. The air tightness detection structure of a pneumatic manipulator according to claim 1, characterized in that: The front end plate of the detection box (1) is provided with a central opening, and the front end of the detection box (1) is rotatably provided with a closed door (11) capable of completely covering the opening.

6. The air tightness detection structure of a pneumatic manipulator according to claim 1, characterized in that: The side of the detection box (1) is sealed with a pressure relief port (8) communicating with the detection chamber (102), and a sealing cover (81) is threadedly connected to the pressure relief port (8).

7. The air tightness detection structure of a pneumatic manipulator according to claim 1, characterized in that: A baffle plate (12) is installed in the detection chamber (102) and is arranged adjacent to the front partition plate (2). A plurality of air holes (121) are provided on the baffle plate (12).

8. The air tightness detection structure of a pneumatic manipulator according to claim 2, characterized in that: The oil delivery pipe (711) airtightly connected to the hydraulic cylinder (71) passes through the side plate of the detection box (1) and extends outside the box, and the outer wall of the oil delivery pipe (711) is airtightly connected to the side plate of the detection box (1).

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