Rotatable clamping mechanism for pre-filter cup body, pre-filter cup body stress detection system and pre-filter cup body production system

Abstract

The utility model provides a rotatable clamping mechanism for a prefilter cup body, a prefilter cup body stress detection system and a prefilter cup body production system, the rotatable clamping mechanism for the prefilter cup body comprises a rotating seat and a positioning seat fixed with the rotating seat, the positioning seat is provided with a placing area, and the placing area is provided with a clamping groove. A gear ring is arranged on the rotating seat in a sleeving manner; the rack can be meshed with the gear ring; a gas transmission channel is arranged in the middle of the rotating seat, a stress-relief transparent plastic layer is arranged at the top of the positioning seat, an air exhaust opening is formed in the stress-relief transparent plastic layer at the top of the gas transmission channel, and the bottom of the gas transmission channel is connected with an air exhaust device through a pipeline. According to the invention, the rotation of the pre-filter cup body can be realized on the premise of ensuring that the pre-filter cup body is not damaged, and the automatic detection of the stress of the pre-filter cup body is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of detection technology, in particular to a rotatable clamping mechanism for a pre-filter cup body, a pre-filter cup body stress detection system and a pre-filter cup body production system. Background Art

[0002] Plastic products are prone to structural stress concentration during injection molding due to factors such as material, structure, and process, which can seriously impact product lifespan. To reduce product stress, post-injection heat treatment is commonly used to lower stress levels and extend product lifespan. However, in practice, structural factors can lead to incomplete stress release in heat-treated products, leaving some areas of the product still experiencing high stress. After a period of use, this accumulated stress can lead to cracking. Therefore, stress testing of heat-treated products can further identify risks and extend product lifespan.

[0003] The pre-filter cup is injection-molded from PC or PA materials. To improve product performance, heat treatment is commonly used after manufacturing to reduce injection stress, further extending service life. However, in actual use, premature product failure due to excessive stress can still occur. This is particularly true for freezing resistance, where excessive concentrated stress can easily cause cracking. Therefore, stress testing of the cup is necessary to avoid premature product failure in applications.

[0004] Currently, the stress of plastic products can be tested using a stress meter. However, due to the limitation of light source, it can only be carried out in a limited space. Large-sized products require manual adjustment. Specifically, the product is placed on the test table for a period of time, and the stress distribution of the area is generated by calculating the image. The placement of the product is manually adjusted, and then other areas are tested. It is impossible to test the entire product at once, and automated testing has not yet been realized. Therefore, when testing products, manual sampling is only possible, and batch testing is not possible. Utility Model Content

[0005] The purpose of the utility model includes providing a rotatable clamping mechanism for a pre-filter cup body, a pre-filter cup body stress detection system and a pre-filter cup body production system. The rotatable clamping mechanism can realize the rotation of the pre-filter cup body without causing damage to the pre-filter cup body, which is conducive to the automatic detection of the stress of the pre-filter cup body.

[0006] The embodiment of the present utility model can be implemented as follows:

[0007] In a first aspect, the utility model provides a rotatable clamping mechanism for a pre-filter cup, comprising a rotating seat and a positioning seat fixed to the rotating seat, wherein the positioning seat is provided with a placement area for placing the pre-filter cup, and a gear ring is provided on the rotating seat;

[0008] It also includes a rack capable of meshing with the gear ring and driving the gear ring to rotate;

[0009] An air supply channel is provided in the middle of the rotating seat, a stress-relieving transparent plastic layer is provided on the top of the positioning seat, an air extraction port is provided on the stress-relieving transparent plastic layer on the top of the air supply channel, and an air extraction device is connected to the bottom of the air supply channel through a pipeline.

[0010] In an optional embodiment, a check valve is provided on the gas transmission channel.

[0011] In an optional embodiment, a limiting groove is provided on the top of the positioning seat, and the shape and size of the limiting groove are adapted to the shape and size of the cup opening of the pre-filter cup body.

[0012] In a second aspect, the utility model provides a pre-filter cup stress detection system, comprising a conveying mechanism, wherein one end of the conveying mechanism is provided with an inspection area for placing a pre-filter cup to be detected and a loading robot arm for transferring the pre-filter cup to be detected from the inspection area to the conveying mechanism, and the other end of the conveying mechanism is provided with a storage area for placing the pre-filter cup after detection and a unloading robot arm for transferring the pre-filter cup from the conveying mechanism to the storage area. The conveying mechanism is also provided with a stress tester for monitoring the pre-filter cup and a rotatable clamping mechanism according to any one of the above items for placing the pre-filter cup;

[0013] The loading and unloading robotic arms are both provided with a clamping mechanism, which includes a clamping cylinder and flexible fingers;

[0014] The storage area includes a qualified area for placing pre-filter cups that pass the stress test and an unqualified area for placing pre-filter cups that fail the stress test.

[0015] In an optional embodiment, there are two or more stress testers provided along the conveying mechanism;

[0016] The racks are arranged between the two stress testers connected on the conveying mechanism.

[0017] In an optional embodiment, a bearing is further included, wherein the outer ring of the bearing is fixed on the conveying mechanism, and the inner ring of the bearing is sleeved on the rotating seat.

[0018] In an optional embodiment, the flexible finger includes a finger body and a buffer for contacting the pre-filter cup body, the buffer is fixed to the finger body, and a side of the buffer in contact with the pre-filter cup body is provided with an anti-slip structure.

[0019] In an optional embodiment, the buffer member includes a curved surface adapted to the curvature of the surface of the pre-filter cup body, and the curved surface is fixedly connected to the finger body through a first connecting surface and a second connecting surface arranged in the same direction as the pre-filter cup body, and the first connecting surface, the curved surface, the second connecting surface and the finger body are connected in sequence to form a buffer space.

[0020] In an optional embodiment, the clamping mechanism is an inflatable clamping mechanism, a first air cavity is provided in the clamping cylinder, a second air cavity is provided in the flexible finger, the first air cavity and the second air cavity are connected, and both are connected to the pressure control device.

[0021] In a second aspect, the present invention provides a pre-filter cup production system, comprising the pre-filter cup stress detection system according to any one of the aforementioned embodiments.

[0022] The beneficial effects of the pre-filter cup stress detection system and the pre-filter cup production system provided by the embodiments of the present invention include:

[0023] The rotatable clamping mechanism in the present application can realize the rotation of the pre-filter cup without causing damage to the pre-filter cup, which is conducive to the automatic detection of the stress of the pre-filter cup.

[0024] The pre-filter cup stress detection system provided in this application has a flexible clamping mechanism that can reduce damage to the cup body, and a rotatable clamping mechanism that facilitates the rotation of the cup body. The combination of the two lays the foundation for the automation of the pre-filter cup stress detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of the pre-filter cup stress detection system provided in this application;

[0027] Figure 2 A schematic structural diagram of the rotatable clamping mechanism provided in this application;

[0028] Figure 3 A schematic diagram of the structure of the rotating seat and the rotating seat provided in this application;

[0029] Figure 4 A schematic diagram of the structure of the clamping mechanism provided in this application;

[0030] Figure 5 This is a cross-sectional view of the buffer provided in this application.

[0031] Icons: 100-Conveying mechanism; 200-Inspection area; 300-Loading robot arm; 400-Storage area; 410-Qualified area; 420-Unqualified area; 500-Unloading robot arm; 600-Stress tester; 700-Rotating clamping mechanism; 710-Swivel seat; 720-Gas transmission channel; 721-First gas transmission pipe; 722-Accommodating chamber; 723-Conical member; 724-Guide mesh plate; 725-Spring; 726 -Second air supply pipe; 730-Positioning seat; 740-Stress-relieving transparent plastic layer; 750-Check valve; 760-Gear ring; 770-Rack; 780-Bearing; 800-Clamping mechanism; 810-Clamping cylinder; 820-Flexible finger; 830-Buffer; 831-First connecting surface; 832-Arc-shaped surface; 833-Second connecting surface; 834-Buffer space; 835-Anti-slip structure; 900-Pre-filter cup. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0037] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0038] Please refer to Figure 2 and Figure 3 The present invention provides a rotatable clamping mechanism 700 for a pre-filter cup 900, comprising a rotating seat 710 and a positioning seat 730 fixed to the rotating seat 710, wherein the positioning seat 730 is provided with a placement area for placing the pre-filter cup 900, and the rotating seat 710 is provided with a gear ring 760;

[0039] It also includes a rack 770 that can mesh with the gear ring 760 and drive the gear ring 760 to rotate;

[0040] An air supply channel 720 is provided in the middle of the rotating seat 710, a stress-relieving transparent plastic layer 740 is provided on the top of the positioning seat 730, an air extraction port is provided on the stress-relieving transparent plastic layer 740 on the top of the air supply channel 720, and an air extraction device is connected to the bottom of the air supply channel 720 through a pipeline.

[0041] The rotatable clamping mechanism 700 secures the pre-filter cup 900 using vacuum extraction, and the contact portion with the cup is made of stress-relieving transparent plastic. This secures the pre-filter cup 900 while minimizing damage to the cup caused by the rotatable clamping mechanism 700. During operation, the loading robot 300 positions the pre-filter cup 900 with its opening facing downward. The interior of the pre-filter cup 900 communicates with the vacuum device via the air delivery channel 720, creating a negative pressure within the pre-filter cup 900. Typically, to improve testing efficiency, the cup is tested multiple times. After passing through a stress tester 600, the cup is moved forward by the conveying mechanism 100, rotated a specified angle when passing through a position where the rack 770 is located, and then moved forward to enter the next stress tester 600. The rotatable clamping mechanism 700 utilizes a gear and rack 770 in conjunction, allowing for quantitative and accurate adjustment of the rotation angle of the rotatable clamping mechanism 700 based on testing conditions. The rotatable clamping mechanism 700 in the present application can realize the rotation of the pre-filter cup 900 without causing damage to the pre-filter cup 900, which is beneficial to the automatic detection of the stress of the pre-filter cup 900.

[0042] In an optional embodiment, a check valve 750 is provided on the gas transmission channel, and the check valve 750 can prevent gas from flowing back.

[0043] In an optional embodiment, a limiting groove is provided on the top of the positioning seat 730 , and the shape and size of the limiting groove are adapted to the shape and size of the cup opening of the pre-filter cup body 900 to avoid misalignment of the pre-filter cup body 900 .

[0044] Please refer to Figure 1 The stress detection system for the pre-filter cup body 900 provided by the present invention includes a conveying mechanism 100, one end of which is provided with an inspection area 200 for placing the pre-filter cup body 900 to be detected and a loading robot arm 300 for transferring the pre-filter cup body 900 to be detected from the inspection area 200 to the conveying mechanism 100, and the other end of the conveying mechanism 100 is provided with a storage area 400 for placing the pre-filter cup body 900 after detection and a unloading robot arm 500 for transferring the pre-filter cup body 900 from the conveying mechanism 100 to the storage area 400, and the conveying mechanism 100 is also provided with a stress tester 600 for monitoring the pre-filter cup body 900 and a rotatable clamping mechanism 700 for placing the pre-filter cup body 900;

[0045] The loading robot arm 300 and the unloading robot arm 500 are both provided with a clamping mechanism 800, and the clamping mechanism 800 includes a clamping cylinder 810 and a flexible finger 820;

[0046] The storage area 400 includes a qualified area 410 for storing pre-filter cups 900 that pass the stress test and an unqualified area 420 for storing pre-filter cups 900 that fail the stress test.

[0047] The detection principle of the stress tester 600 is as follows: light passes through a polarizer and becomes circularly polarized light. When a stressed sample is placed, the slow and fast axes of birefringence produce an optical path difference, and the outgoing light becomes elliptically polarized light. By rotating the analyzer, the angle at which the polarized light is affected by stress is measured, thereby calculating the stress magnitude and slow axis direction of the sample. During a single measurement, the fully automatic polarizing stress meter takes an image at a predetermined angle and can simultaneously obtain the stress magnitude and slow axis direction of all areas of the sample within the visible range, while outputting a three-dimensional stress distribution. The stress tester 600 can capture sample images via a camera connected to a computer and can store measurement data and various images corresponding to the results. The light source uses a high-brightness LED lamp, which has a long life and saves energy, and can reduce the time and operating costs of replacing the light source.

[0048] The existence of the curved surface of the pre-filter cup body 900 causes a blind spot in the test. The stress test cannot be completed in one go during the stress test, and the object needs to be adjusted in direction before all-round testing can be performed. At the same time, since the larger the light source, the higher the investment cost, in order to reduce the investment cost of the light source, generally speaking, the arc of the cup body for priority testing is 120-180 degrees. If the cup body needs to be tested 360 degrees, it needs to be rotated, so a rotatable clamping mechanism 700 is required.

[0049] In addition, the cup body undergoes long-term annealing to make its stress uniform, but the allowable stress is low. In order to avoid damage to the cup body, the clamping mechanism 800 uses flexible fingers 820.

[0050] The stress detection system for the pre-filter cup body 900 provided by the present application has a flexible clamping mechanism 800 that can reduce damage to the cup body, and a rotatable clamping mechanism 700 that facilitates the rotation of the cup body. The combination of the two lays the foundation for the automation of the stress detection device for the pre-filter cup body 900. During operation, the loading robot arm 300 transfers the pre-filter cup body 900 from the inspection area 200 to the rotatable clamping mechanism 700 on the conveying mechanism 100, and then, driven by the conveying mechanism 100, moves forward to the area where the stress tester 600 is located for stress testing. If a single test fails to achieve a 360-degree test of the pre-filter cup body 900, the rotatable mounting mechanism is rotated to test the pre-filter cup body 900 again. After the test is completed, the unloading robot arm 500 transfers the pre-filter cup body 900 to the storage area 400. In some embodiments, the storage area 400 can also be divided into a qualified area 410 and an unqualified area 420. The controller of the unloading robot is connected to the signal of the stress detector. When the stress test result is qualified, the pre-filter cup 900 is transferred to the qualified area 410. When the stress test result is unqualified, the pre-filter cup 900 is transferred to the unqualified area 420. Specifically, in some embodiments, when the detected stress is higher than the set stress requirement, the equipment indicator light turns yellow and the test is repeated. When the allowable stress exceeds the set value twice at the same location, the equipment indicator light turns red, and the unloading robot 500 grabs the product and sends it to the unqualified product bin.

[0051] In an optional embodiment, more than two stress testers 600 are provided along the conveying mechanism 100 ;

[0052] The rotatable clamping mechanism 700 includes a rotating seat 710 and a positioning seat 730 fixed to the rotating seat 710. The positioning seat 730 is provided with a placement area for placing the pre-filter cup 900. The rotating seat 710 is provided with a gear ring 760.

[0053] The two stress testers 600 connected to the conveying mechanism 100 are each provided with a rack 770 that can mesh with the gear ring 760 and drive the gear ring 760 to rotate. Figure 2 shown.

[0054] The number of stress testers 600 can be set as needed. Typically, to improve testing efficiency, several stress testers 600 are installed if the cup body needs to be tested multiple times. During operation, after the cup body is tested by one stress tester 600, it moves forward, rotates a specified angle when passing the position where the rack 770 is set, and then moves forward to enter the next stress tester 600. The rotatable clamping mechanism 700 uses a gear and rack 770 to coordinate, allowing the rotation angle of the rotatable clamping mechanism 700 to be quantitatively and accurately adjusted according to the testing conditions. Specifically, the rack 770 in this embodiment can be fixed above the conveying mechanism 100 and on one side of the route where the gear ring 760 passes. When the gear ring 760 follows the conveying mechanism 100 and moves forward to the area between the two stress testers 600, it interferes with the rack 770 and rotates. The length of the rack 770 is related to the angle of rotation of the gear ring 760. The greater the angle that the gear ring 760 and the cup body need to rotate, the longer the length of the rack 770 needs to be. Therefore, the length of the rack 770 can be reasonably set according to the angle at which the cup body needs to rotate.

[0055] In an optional embodiment, if Figure 3 As shown, a gas delivery channel 720 is provided in the middle of the rotating seat 710, a stress-relieving transparent plastic layer 740 is provided on the top of the positioning seat 730, an air extraction port is provided on the stress-relieving transparent plastic layer 740 on the top of the gas delivery channel 720, and a gas extraction device is connected to the bottom of the gas delivery channel 720 through a pipeline.

[0056] The rotatable clamping mechanism 700 secures the cup body using vacuum extraction, and the contact portion with the cup body is made of stress-relieving transparent plastic. This secures the pre-filter cup body 900 while minimizing damage to the cup body caused by the rotatable clamping mechanism 700. During operation, the loading robot 300 positions the pre-filter cup body 900 with its opening facing downward. The interior of the pre-filter cup body 900 is connected to the exhaust device via the air supply channel 720, creating a negative pressure inside the pre-filter cup body 900.

[0057] In an optional embodiment, a check valve 750 is provided on the gas delivery channel to prevent gas backflow. It should be noted that in the present application, when the rotatable clamping mechanism 700 secures the pre-filter cup 900, a negative pressure is present within the pre-filter cup 900. This pressure is sufficient to secure the pre-filter cup 900. Excessive pressure may damage the cup. In some optional embodiments, the gas delivery channel includes a first gas delivery pipe 721, a receiving chamber 722, and a second gas delivery pipe 726, which are sequentially arranged. The first gas delivery pipe 721 is arranged on the side of the receiving chamber 722 close to the stress-relief plastic layer, and the second gas delivery pipe 726 is arranged on the side of the receiving chamber 722 away from the stress-relief plastic layer. A check valve 750 is disposed within the receiving chamber 722. The check valve 750 includes a conical member 723 whose diameter gradually decreases as it moves away from the stress-relief transparent plastic layer 740. A guide mesh 724 is fixedly connected to the conical member 723, which is movable along the inner wall of the receiving chamber 722. A spring 725 is disposed between the guide mesh 724 and the first gas delivery pipe 721, which is capable of pressing the conical structure against the opening of the second gas delivery pipe 726. When air is required to be evacuated, a vacuum pump connector with an ejector pin is connected to the second gas delivery pipe 726 to lift the conical member 723, allowing gas to flow.

[0058] In an optional embodiment, a bearing 780 is further included, wherein the outer ring of the bearing 780 is fixed on the conveying mechanism 100, and the inner ring of the bearing 780 is sleeved on the rotating seat 710. In some embodiments, the bearing 780 can be selected to have a sealing function to suppress air pressure leakage at the location of the bearing 780, thereby reducing energy waste of the vacuum device.

[0059] In an optional embodiment, a limiting groove is provided on the top of the positioning seat 730 , and the shape and size of the limiting groove are adapted to the shape and size of the cup opening of the pre-filter cup body 900 to avoid misalignment of the pre-filter cup body 900 .

[0060] In an optional embodiment, if Figure 4 and Figure 5 As shown, the flexible finger 820 includes a finger body and a buffer 830 for contacting the pre-filter cup 900 . The buffer 830 is fixed to the finger body. The side of the buffer 830 contacting the pre-filter cup 900 is provided with an anti-slip structure 835 .

[0061] The presence of the buffer 830 is conducive to dispersing the stress between the flexible fingers 820 and the pre-filter cup body 900, reducing the damage of the flexible fingers 820 to the pre-filter cup body 900 during the clamping step; in addition, in order to avoid slipping and other phenomena between the flexible fingers 820 and the pre-filter cup body 900, which may cause the pre-filter cup body 900 to slide and cause damage, an anti-slip structure 835 is provided on the buffer 830. The anti-slip structure 835 may specifically be anti-slip protrusions, anti-slip lines, a flexible anti-slip coating, etc.

[0062] In an optional embodiment, the buffer member 830 includes a curved surface 832 adapted to the curvature of the surface of the pre-filter cup body 900, and the curved surface 832 is fixedly connected to the finger body through a first connecting surface 831 and a second connecting surface 833 arranged in the same direction as the pre-filter cup body 900. The first connecting surface 831, the curved surface 832, the second connecting surface 833 and the finger body are connected in sequence to form a buffer space 834.

[0063] In this embodiment, the curved surface 832 can fully contact the surface of the pre-filter cup 900, which is conducive to dispersing stress. The presence of the buffer space 834 can act as a buffer, preventing damage to the pre-filter cup 900 caused by a sudden increase in the force between the pre-filter cup 900 and the buffer member 830. At the same time, it can accommodate errors in the manufacturing process of the pre-filter cup 900 and is suitable for pre-filter cups 900 of more specifications. The first connecting surface 831 and the second connecting surface 833 can not only support the curved surface 832, but also be arranged along the axial direction of the pre-filter cup 900, which is more conducive to dispersing the stress between the buffer member 830 and the pre-filter cup 900 than if they were arranged along the circumference of the pre-filter cup 900. It should be noted that in this embodiment, the number of buffer spaces 834 can be more than two.

[0064] In an optional embodiment, the clamping mechanism 800 is an inflatable clamping mechanism 800, a first air cavity is provided in the clamping cylinder 810, a second air cavity is provided in the flexible finger 820, the first air cavity and the second air cavity are connected and are both connected to the pressure control device.

[0065] By selecting the inflatable clamping mechanism 800, the air pressure in the first air cavity and the second air cavity can be adjusted by the pressure control device, which is conducive to adjusting the size, hardness and strength of the clamping cylinder 810 and the flexible fingers 820 in the clamping mechanism 800 as needed, reducing damage to the clamping cylinder 810 and the flexible fingers 820, and being suitable for pre-filter cup bodies 900 of different specifications.

[0066] The present invention further provides a pre-filter cup 900 production system, comprising the pre-filter cup 900 stress detection system according to any one of the aforementioned embodiments.

[0067] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A rotatable clamping mechanism for a pre-filter cup, characterized in that: It includes a rotating seat and a positioning seat fixed to the rotating seat, the positioning seat is provided with a placement area for placing the pre-filter cup body, and the rotating seat is provided with a gear ring; It also includes a rack capable of meshing with the gear ring and driving the gear ring to rotate; An air supply channel is provided in the middle of the rotating seat, a stress-relieving transparent plastic layer is provided on the top of the positioning seat, an air extraction port is provided on the stress-relieving transparent plastic layer on the top of the air supply channel, and an air extraction device is connected to the bottom of the air supply channel through a pipeline.

2. The rotatable clamping mechanism for the pre-filter cup according to claim 1, characterized in that: A check valve is provided on the gas transmission channel.

3. The rotatable clamping mechanism for the pre-filter cup according to claim 1, characterized in that: A limiting groove is provided on the top of the positioning seat, and the shape and size of the limiting groove are adapted to the shape and size of the cup opening of the pre-filter cup body.

4. A pre-filter cup stress detection system, characterized in that: The invention comprises a conveying mechanism, wherein one end of the conveying mechanism is provided with an inspection area for placing a pre-filter cup to be inspected and a loading robot arm for transferring the pre-filter cup to be inspected from the inspection area to the conveying mechanism, the other end of the conveying mechanism is provided with a storage area for placing a pre-filter cup after inspection and a unloading robot arm for transferring the pre-filter cup from the conveying mechanism to the storage area, the conveying mechanism is further provided with a stress tester for monitoring the pre-filter cup and a rotatable clamping mechanism according to any one of claims 1 to 3 for placing the pre-filter cup; The loading and unloading robotic arms are both provided with a clamping mechanism, which includes a clamping cylinder and flexible fingers; The storage area includes a qualified area for placing pre-filter cups that pass the stress test and an unqualified area for placing pre-filter cups that fail the stress test.

5. The pre-filter cup stress detection system according to claim 4, characterized in that: There are more than two stress testers along the conveying mechanism; The racks are arranged between the two stress testers connected on the conveying mechanism.

6. The pre-filter cup stress detection system according to claim 4, characterized in that: It also includes a bearing, the outer ring of the bearing is fixed on the conveying mechanism, and the inner ring of the bearing is sleeved on the rotating seat.

7. The pre-filter cup stress detection system according to claim 4, characterized in that: The flexible finger includes a finger body and a buffer member for contacting the pre-filter cup body. The buffer member is fixed on the finger body. The side of the buffer member contacting the pre-filter cup body is provided with an anti-slip structure.

8. The pre-filter cup stress detection system according to claim 7, characterized in that: The buffer member includes a curved surface adapted to the curvature of the surface of the pre-filter cup body. The curved surface is fixedly connected to the finger body through a first connecting surface and a second connecting surface arranged in the same direction as the pre-filter cup body. The first connecting surface, the curved surface, the second connecting surface and the finger body are connected in sequence to form a buffer space.

9. The pre-filter cup stress detection system according to claim 8, characterized in that: The clamping mechanism is an inflatable clamping mechanism. A first air cavity is provided in the clamping cylinder, and a second air cavity is provided in the flexible finger. The first air cavity and the second air cavity are communicated and are both connected to the pressure control device.

10. A pre-filter cup production system, characterized in that: The invention comprises the pre-filter cup stress detection system according to any one of claims 4 to 9.

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