Automobile air conditioner pipeline pressure sensor testing equipment

Abstract

The utility model discloses a kind of automobile air conditioner pipeline pressure sensor test equipment, including machine table, and the machine table is equipped with feeding module, discharging module, feeding and discharging manipulator, product conveying module and pressure cover conducting mechanism;Feeding and discharging manipulator is connected with feeding module, discharging module and product conveying module respectively;Test fixture is equipped on the machine table, and test fixture is equipped with inflation cavity, and the upper end of test fixture is equipped with product placement groove, and product placement groove is communicated with inflation cavity, and product conveying module is connected with test fixture;Pressure cover conducting mechanism includes pressure cover module, and pressure cover module is equipped with conducting module, and pressure cover module can drive conducting module lifting movement, and conducting module is equipped with conducting plug, and conducting module can drive conducting plug and product plug-in or separate.The utility model can realize automatic test, compared with artificial judgment can improve the efficiency of test and the accuracy of test result, reduce the situation that artificial misjudgment causes defective product to flow out market appears.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensor testing devices, and particularly relates to a testing device for an automotive air-conditioning pipeline pressure sensor. Background Art

[0002] An automotive air-conditioning pressure sensor can measure the refrigerant pressure of an air-conditioning system for real-time monitoring by an ECU, optimizing the system control strategy, reducing the idle speed, saving energy consumption, having high measurement accuracy, and ensuring that the ECU can implement an optimized control strategy for the air-conditioning system; according to customer selection, there are PWM or voltage output interface types; with a ceramic capacitor structure, fast response speed, and good compatibility with the measured medium. The air-conditioning system pressure sensors near the compressor and at the outlet of the ventilation duct in the air-conditioning system are mainly used to monitor the refrigerant pressure of the air-conditioning system to ensure the comfort of the vehicle interior temperature.

[0003] Before leaving the factory, the pipeline pressure sensor needs to be tested for its detection performance. Currently, there is a lack of dedicated testing equipment. Usually, the pressure sensor is installed on the test pipeline, and high-pressure gas is injected into the test pipeline or the gas in the pipeline is extracted to generate a vacuum degree. Then, the air pressure value of the pipeline is detected by a pressure sensor, and the operator manually judges whether the pressure sensor is qualified. This testing method not only has low efficiency, but also manual judgment is prone to misjudgment, which may lead to defective products flowing into the market end, bringing a very bad experience to users, and at the same time, it will also affect the reputation of the production enterprise. Content of the Utility Model

[0004] To address some or all of the problems existing in the prior art, this utility model provides a testing device for automotive air conditioning pipeline pressure sensors, including a machine base and a controller. The machine base is equipped with a loading module, a unloading module, a loading / unloading robot, a product conveying module, a barcode scanning mechanism, a pressure conduction mechanism, and a visual inspection mechanism, all electrically connected to the controller. The loading / unloading robot is connected to the loading module, the unloading module, and the product conveying module, and can move the product to be tested from the loading module to the product conveying module, and can also move the tested product from the product conveying module to the unloading module. The machine base is equipped with a testing fixture, which has an inflation chamber and is connected to an external air source. The external air source can inflate the inflation chamber. The upper end of the test fixture is provided with a product placement slot, which is connected to the inflation chamber. The product transport module is connected to the test fixture. The pressing and connecting mechanism includes a pressing module, which is connected to the machine base. The output end of the pressing module is provided with a connecting module, which can drive the connecting module to move up and down. The connecting module is located directly above the product placement slot. The connecting module is provided with a connecting plug, which can drive the connecting plug to be inserted into or separated from the product in the product placement slot. The visual inspection mechanism is connected to the product transport module and is used to capture images of the tested products on the product transport module.

[0005] As a further improvement of this utility model, the feeding module includes a feeding cylinder, which is connected to the machine base. A feeding fixture is provided on the output end of the feeding cylinder. The feeding fixture is slidably connected to the machine base and has multiple product placement positions.

[0006] As a further improvement of this utility model, there are two feeding cylinders and two feeding fixtures, and they are set in a one-to-one correspondence, with the two feeding fixtures being staggered.

[0007] As a further improvement of this utility model, the loading and unloading robot includes a Y-axis module, which is connected to the machine base. An X-axis module is provided on the output end of the Y-axis module, a Z-axis module is provided on the output end of the X-axis module, and a gripper cylinder is provided on the output end of the Z-axis module.

[0008] As a further improvement of this utility model, the product conveying module includes a transverse module and a material picking module. The transverse module is connected to the machine base and to the loading and unloading robot. A conveying carrier is provided on the output end of the transverse module, and the conveying carrier is provided with multiple product conveying slots.

[0009] As a further improvement of this utility model, the material picking module is connected to the transverse moving module. The output end of the material picking module is provided with a gripping cylinder, and the output end of the gripping cylinder is provided with two material picking claws. The gripping cylinder can drive the two material picking claws to close or separate from each other, and the material picking module can drive the material picking claws to be positioned relative to the test fixture or the transport carrier respectively.

[0010] As a further improvement of this utility model, the visual inspection mechanism includes a camera mounting bracket connected to the machine base. The camera mounting bracket is equipped with a CCD camera and a ring light source. The ring light source is located directly below the CCD camera. The transverse module can transport the transport vehicle to the position directly below the CCD camera. The CCD camera is used to capture images of the tested products in the product transport slot.

[0011] As a further improvement of this utility model, the pressing and guiding mechanism includes a pressing and mounting frame, the pressing and mounting module includes a pressing and mounting cylinder, the pressing and mounting cylinder is connected to the pressing and mounting frame, and the guiding module is connected to the output end of the pressing and mounting cylinder.

[0012] As a further improvement of this utility model, the conductive module includes a conductive mounting base, which is connected to the output end of the pressing cylinder. The conductive mounting base is provided with a conductive cylinder, and the conductive plug is connected to the output end of the conductive cylinder.

[0013] As a further improvement of this utility model, the conductive mounting base is provided with a plurality of guide rods, and the pressing mounting bracket is provided with guide sleeves at corresponding positions to the guide rods. The guide rods pass through the corresponding guide sleeves and are slidably connected to the guide sleeves.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention enables automated testing of pressure sensors, which improves testing efficiency and accuracy compared to manual judgment, reduces the occurrence of defective products entering the market due to human error, and can protect the reputation of manufacturers to a certain extent. During the specific testing process, the host computer or a person places the product to be tested onto the feeding module, which then transports the product to the gripping position of the product conveying module. A robotic arm then grips the product from the feeding module and places it onto the product conveying module. The product conveying module then transports the product and places it into the product placement slot on the product fixture. Next, the pressing module is controlled to descend to a suitable position, and the connecting module drives the connecting plug to descend and connect with the product to be tested in the product placement slot, thus electrically connecting the product to the controller. An external air source inflates the inflation chamber, and the controller controls the product to check the air pressure inside the inflation chamber. By comparing the actual air pressure injected into the inflation chamber with the air pressure detected by the product, the performance of the pipeline pressure sensor can be determined, thus completing the test. After the test is completed, the pressing module and the conduction module are reset respectively, so that the conduction plug is removed from the product. Then, the product conveying module is controlled to take the product out of the product fixture. Then, the loading and unloading robot grabs the tested product from the product conveying module and places it on the unloading module. The unloading module sends the tested product out of the machine. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the pressure sensor structure tested in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure from another perspective of an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the test fixture in an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the test fixture in an embodiment of this utility model;

[0022] Figure 6This is a schematic diagram of the feeding module in an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the loading and unloading robot in an embodiment of this utility model;

[0024] Figure 8 This is a schematic diagram of the Z-axis module in an embodiment of this utility model;

[0025] Figure 9 This is a schematic diagram of the transverse movement module in an embodiment of this utility model;

[0026] Figure 10 This is a schematic diagram of the material handling module in an embodiment of this utility model;

[0027] Figure 11 This is a schematic diagram of the scanning mechanism in an embodiment of this utility model;

[0028] Figure 12 This is a schematic diagram of the structure of the visual inspection mechanism in an embodiment of this utility model;

[0029] Figure 13 This is a schematic diagram of the pressure-covering conduction mechanism in an embodiment of this utility model. Detailed Implementation

[0030] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0031] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0033] like Figure 1-13As shown, an automotive air conditioning pipe pressure sensor testing device includes a machine base 1 and a controller. The machine base 1 is equipped with a feeding module 2, a discharging module 3, a defective product discharge module 4, a loading / unloading robot 5, a product conveying module 6, a barcode scanning mechanism 7, a pressing and conducting mechanism 8, and a vision inspection mechanism 9, all electrically connected to the controller. The feeding module 2 is used to feed the product to be tested into the gripping position of the loading / unloading robot 5; the discharging module 3 is used to discharge the tested product from the unloading position of the loading / unloading robot 5 out of the machine base 1; and the defective product discharge module 4 is used to discharge the tested defective products out of the machine base 1. The loading / unloading robot 5 is connected to the loading module 2, unloading module 3, defective product outflow module 4, and product conveying module 6, respectively. The robot 5 can move products to be tested from the loading module 2 to the product conveying module 6, and can also move tested products from the product conveying module 6 to the unloading module 3. Simultaneously, it can move defective products from the product conveying module 6 to the defective product outflow module 4. The barcode scanning mechanism 7 is connected to the product conveying module 6 and is used to scan the barcodes of the products to be tested on the product conveying module 6, enabling the controller to obtain information about the currently tested products for product tracking and traceability.

[0034] A test fixture 10 is installed on the machine tool 1. The test fixture 10 has an inflation chamber 101 inside. An external air source is connected to the test fixture 10 to inflate the inflation chamber 101. A product placement slot 102 is located at the upper end of the test fixture 10, and the product placement slot 102 is connected to the inflation chamber 101. A product transport module 6 is connected to the test fixture 10. During testing, the product transport module 6 places the product to be tested into the product placement slot 102 of the test fixture 10; then, it controls the external air source to inflate the inflation chamber 101. The product to be tested can detect the air pressure inside the inflation chamber 101, thus fulfilling the testing requirements. After testing, the product transport module 6 removes the tested product from the test fixture 10 and places a new product to be tested back onto the test fixture 10, thus achieving continuous testing.

[0035] The pressing and connecting mechanism 8 includes a pressing module 81, which is connected to the machine base 1. The output end of the pressing module 81 is provided with a connecting module 82. The pressing module 81 can drive the connecting module 82 to move up and down. The connecting module 82 is located directly above the product placement slot 102. The connecting module 82 is provided with a connecting plug 821. The connecting module 82 can drive the connecting plug 821 to be inserted into or separated from the product in the product placement slot 102. During the testing process, after the product transport module 6 places the product to be tested into the product placement slot 102, the control pressing module 81 drives the conduction module 82 to descend until the conduction module 82 descends to a height that matches the test fixture 10. Then, the control conduction module 82 drives the conduction plug 821 to descend, so that the conduction plug 821 is inserted into the product to be tested in the product placement slot 102. Through the conduction plug 821, the product to be tested is electrically connected to the controller. This allows the controller to control the product to test the air pressure in the inflation chamber 101 to meet the testing requirements. On the other hand, through the cooperation of the pressing module 81 and the conduction module 82, the conduction plug 821 abuts and limits the product to be tested, thereby limiting and fixing the product to be tested in the product placement slot 102, preventing displacement and air leakage during the testing process, and improving the stability of the test.

[0036] The vision inspection mechanism 9 is connected to the product transport module 6 and is used to capture images of the products that have completed testing on the product transport module 6. When a product has completed testing, the product transport module 6 will remove it from the product placement slot 102. After the product is transported to the corresponding position of the vision inspection mechanism 9, the vision inspection mechanism 9 will take a picture of it and send the image back to the controller. The controller can then compare the images to determine whether the product's socket pins, shell shape, etc., are qualified.

[0037] During specific testing, the host computer or manual operation places the product to be tested on the feeding module 2. The feeding module 2 transports the product to the grasping position of the product conveying module 6. Then, the loading and unloading manipulator 5 grasps the product on the feeding module 2 and places it on the product conveying module 6. After that, the product conveying module 6 transports the product to be tested to the corresponding position of the code scanning mechanism 7, and the code scanning mechanism 7 scans the identification code on the product so that the controller can obtain the relevant information of the current tested product. Then, the product conveying module 6 transports and places the product into the product placement groove 102 on the test fixture 10. Then, the pressing and covering module 81 is controlled to work, driving the conduction module 82 to descend to a suitable position. Then, the conduction module 82 drives the conduction plug 821 to descend and plug into the product to be tested in the product placement groove 102, making the product to be tested electrically conduct with the controller through the conduction plug 821. Inflate the inflation cavity 101 through an external air source, control the product to be tested to work through the controller to check the air pressure in the inflation cavity 101, and judge whether the detection performance of the pipeline pressure sensor is qualified by comparing the actually injected air pressure into the inflation cavity 101 and the air pressure detected by the product to be tested, thus completing the test. After the test is completed, the pressing and covering module 81 and the conduction module 82 are respectively controlled to reset, so that the conduction plug 821 is withdrawn from the product. Then, the product conveying module 6 is controlled to take out the product on the test fixture 10. After the product conveying module 6 transports the product to the corresponding position of the vision inspection mechanism 9, the vision inspection mechanism 9 takes a picture of it and feeds the image back to the controller. The controller can judge whether the socket pins, shell shape, etc. of the product are qualified by comparison. The qualified products will be grasped by the loading and unloading manipulator 5 from the product conveying module 6 and placed on the unloading module 3, and the tested products will be sent out of the machine 1 through the unloading module 3. The unqualified products will be grasped by the loading and unloading manipulator 5 from the product conveying module 6 and placed on the defective product outflow module 4, and the defective products will be sent out of the machine 1 through the defective product outflow module 4.

[0038] This test equipment for automotive air-conditioning pipeline pressure sensors can perform automated tests on pressure sensors, which can improve the test efficiency and the accuracy of test results compared with manual judgment, reduce the situation of defective products flowing into the market caused by manual misjudgment, and thus improve the product quality of pressure sensors.

[0039] As Figure 4-5 shown, in order to reduce air leakage of the test fixture 10 during the test, a sealing ring 103 is installed on the product placement groove 102. When the conduction component drives the conduction plug 821 to descend and plug into the product in the product placement groove 102, the product in the product placement groove 102 will abut and seal with the sealing ring 103. Thus, through the abutting and sealing of the sealing ring 103, the product to be tested is sealed and fixed with the test fixture 10, reducing the problem of air leakage during the test and improving the stability and accuracy of the test.

[0040] like Figure 6 As shown, the feeding module 2 includes a feeding cylinder 21, which is fixedly mounted on the machine base 1. A feeding fixture 22 is provided on the output end of the feeding cylinder 21, and the feeding fixture 22 is slidably connected to the machine base 1. The feeding fixture 22 has multiple product placement positions 23. Before processing, the host computer or a person places the product to be tested onto the product placement position 23. Then, by controlling the operation of the feeding cylinder 21, the feeding fixture 22 can be driven to slide, thereby carrying the product to be tested to the gripping position of the loading / unloading robot 5, thus realizing the automatic feeding process.

[0041] To improve efficiency, in this embodiment, there are two feeding cylinders 21 and two feeding fixtures 22, and they are arranged in a one-to-one correspondence. The two feeding fixtures 22 are staggered, which allows one to feed while the other is loading, reducing standby time and improving efficiency. In specific operation, when one feeding fixture 22 is feeding at the gripping position of the loading / unloading robot 5, the other feeding fixture 22 is located at the upper computer or manual loading position. This allows for replenishment of material to the other feeding fixture 22, and so on, thereby reducing the standby time of the equipment due to replenishment and improving efficiency.

[0042] In this embodiment, the unloading module 3 has the same structure as the loading module 2, so the specific structure of the unloading module 3 will not be described in detail here.

[0043] The structure of the defective product outflow module 4 is similar to that of the feeding module 2. The only difference is that the defective product outflow module 4 has only one cylinder and one fixture. Therefore, the structure of the defective product outflow module 4 will not be described in detail in this article.

[0044] like Figure 7 As shown, the loading and unloading robot 5 includes a three-dimensional motion module, which is connected to the machine base 1. The output end of the three-dimensional motion module is equipped with a gripper cylinder 51. The three-dimensional motion module can drive the gripper cylinder 51 to move freely in three-dimensional degrees of freedom to meet the loading and unloading operation requirements.

[0045] During the loading process, the host computer or a person places the product to be tested onto the loading module 2 beforehand. The three-dimensional motion module drives the gripper cylinder 51 to move onto the loading fixture 22, and then the gripper cylinder 51 grabs the product from the loading fixture 22. The three-dimensional motion module and the gripper cylinder 51 work together to transport the product to be tested onto the product transport module 6, thus achieving automatic loading. After the product passes the test, the three-dimensional motion module drives the gripper cylinder 51 to move to the corresponding position on the product transport module 6. Then, the gripper cylinder 51 grabs the product from the product transport module, and the three-dimensional motion module and the gripper cylinder 51 work together to transport the tested product onto the unloading module 3, thus achieving automatic unloading. After testing, the defective products are driven by the three-dimensional motion module to move the gripper cylinder 51 to the corresponding position of the product transport module 6. Then, the gripper cylinder 51 grabs the defective products on the product transport module, and then the three-dimensional motion module and the gripper cylinder 51 work together to transport the defective products to the defective products outflow module 4. The defective products are then automatically sent out through the defective products outflow module 4.

[0046] Specifically, the three-dimensional motion module includes an X-axis module 52, a Y-axis module 53, and a Z-axis module 54. The Y-axis module 53 is connected to the machine base 1. The X-axis module 52 is connected to the output end of the Y-axis module 53, the Z-axis module 54 is connected to the output end of the X-axis module 52, and the gripper cylinder 51 is connected to the output end of the Z-axis module 54. Both the X-axis module 52 and the Y-axis module 53 use existing motor lead screw modules, and their specific structures will not be described in detail here. In this embodiment, there are two Y-axis modules 53, and the two Y-axis modules 53 are arranged in parallel on the machine base 1.

[0047] like Figure 8 As shown, the Z-axis module 54 includes a Z-axis fixed base 541, which is connected to the output end of the X-axis module 52. The Z-axis fixed base 541 is equipped with a Z-axis motor 542 and a Z-axis lead screw assembly 543. The output end of the Z-axis motor 542 is connected to the Z-axis lead screw assembly 543. A Z-axis slider 544 is slidably mounted on the Z-axis lead screw assembly 543. A lifting cylinder 545 is mounted on the Z-axis slider 544. A gripper cylinder 51 is connected to the output end of the lifting cylinder 545. During operation, the Z-axis motor 542 drives the Z-axis slider 544 to slide up and down on the Z-axis lead screw assembly 543, thereby driving the lifting cylinder 545 and the gripper cylinder 51 to move up and down. At the same time, in order to compensate for the lifting stroke, the lifting cylinder 545 can drive the gripper cylinder 51 to move up and down further, so that the gripper cylinder 51 can be aligned with the loading module 2 or the product conveying module 6. After the gripper cylinder 51 is aligned with the loading module 2 or the product conveying module 6, the gripper cylinder 51 can pick up the product on the loading module 2 or pick up the tested product on the product conveying module 6.

[0048] In this embodiment, there are two gripper cylinders 51 and two lifting cylinders 545, and they are arranged in a one-to-one correspondence. By providing two gripper cylinders 51 and two lifting cylinders 545, the product transfer mechanism can simultaneously complete the transfer of two products, thereby improving processing efficiency. In other embodiments, the number of gripper cylinders 51 and lifting cylinders 545 can be any other number, and this utility model does not limit this.

[0049] In practical operation, the combination of the three-dimensional motion module and the gripper cylinder 51 enables automatic loading and unloading of product transfer modules, thereby improving the automation level of the equipment.

[0050] like Figure 9-10 As shown, the product conveying module 6 includes a transverse module 61 and a picking module 62. The transverse module 61 and the picking module 62 are respectively connected to the machine base 1. The transverse module 61 is connected to the loading / unloading robot 5 and the picking module 62 respectively. The output end of the transverse module 61 is provided with a conveying carrier 611. The conveying carrier 611 is provided with multiple product conveying slots 612. The transverse module 61 is used to drive the conveying carrier 611 to move back and forth between the picking module 62 and the loading / unloading robot 5. The picking module 62 is provided with two picking grippers 621. The picking module 62 is used to drive the picking grippers 621 to move back and forth between the transverse module 61 and the testing mechanism.

[0051] The transverse module 61 adopts an existing motor screw module, and its specific structure will not be described in detail here. The transport carrier 611 is equipped with four product transport slots 612; during operation, two of the product transport slots 612 are used to place the products to be tested transported by the loading and unloading robot 5, and the other two product transport slots 612 are used to place the tested products transported by the picking module 62.

[0052] In actual operation, the loading and unloading robot 5 can transport the product to be tested into the product transport trough 612; then, the transverse module 61 drives the transport carrier 611 to move laterally, first moving the transport carrier 611 to the corresponding position of the barcode scanning mechanism 7, and the barcode scanning mechanism 7 scans the product on the transport carrier 611; then the transverse module 61 continues to work and moves the transport carrier 611 to the gripping position of the picking module 62, and then the picking module 62 picks up the product to be tested and places it on the test fixture 10. After the test is completed, the tested product is taken out from the test fixture 10 by the material handling module 62 and placed on the transport carrier 611 on the transverse module 61. Then, the transverse module 61 drives the transport carrier 611 to transport the product to the corresponding position of the vision inspection mechanism 9. The vision inspection mechanism 9 takes pictures of the product on the transport carrier 611 to determine whether it is a qualified product. Then, the transverse module 61 will continue to work to move the transport carrier 611 with the product to the gripping position of the loading and unloading robot 5. The loading and unloading robot 5 then completes the unloading.

[0053] like Figure 10 As shown, the material handling module 62 includes a material handling fixing frame 622, which is fixedly connected to the machine base 1. A material handling motor 623 and a material handling lead screw assembly 624 are installed on the material handling fixing frame 622. The output end of the material handling motor 623 is connected to the material handling lead screw assembly 624. A material handling slider 625 is slidably provided on the material handling lead screw assembly 624. A material handling lifting cylinder 626 is installed on the material handling slider 625. A gripping cylinder 627 is provided on the output end of the material handling lifting cylinder 626. Two material handling grippers 621 are provided on the output end of the gripping cylinder 627. The gripping cylinder 627 can drive the two material handling grippers 621 to close or separate. During operation, when the material picking module 62 needs to pick up materials, the material picking motor 623 drives the material picking screw assembly 624 to work, which in turn drives the material picking slider 625 to move. The material picking slider 625 drives the material picking lifting cylinder 626 and the gripping cylinder 627 to move directly above the transport carrier 611 or the test fixture 10. Then, the material picking lifting cylinder 626 drives the gripping cylinder 627 to descend, so that the two material picking claws 621 descend to the corresponding height of the transport carrier 611 or the test fixture 10. After that, the gripping cylinder 627 drives the two material picking claws 621 to close or separate, so that the two material picking claws 621 pick up the product from the transport carrier 611 or the test fixture 10 or transfer the product to the test fixture 10 or the transport carrier 611, thereby realizing the transfer process of the product between the test fixture 10 and the transverse module 61.

[0054] In order to enable the material taking gripper 621 to stably grip the product, a material clamping groove 628 is provided on the material taking gripper 621, and the material clamping grooves 628 on the two material taking grippers 621 are symmetrically distributed. During operation, the two material taking grippers 621 close to each other, so that the two feeding grooves are respectively abutted against both sides of the product. The product can be stably gripped through the two material clamping grooves 628, avoiding the situation of falling off during transportation.

[0055] In this embodiment, two material clamping grooves 628 are provided on each material taking gripper 621, so that the grasping cylinder 627 can grasp two products simultaneously, improving the processing efficiency. In other embodiments, the number of the material clamping grooves 628 can also be any other number, and the present utility model does not limit this.

[0056] As Figure 11 shown, the code scanning mechanism 7 includes a code scanning mounting frame 71, the code scanning mounting frame 71 is fixedly connected to the machine table 1, a code reader 72 is provided on the code scanning mounting frame 71, the code reader 72 is electrically connected to the controller, the transverse movement module 61 can drive the transportation carrier 611 to move to the front of the code reader 72, and the code reader 72 is used to scan the identification code of the product to be tested on the transportation carrier 611. Specifically during operation, when the loading and unloading manipulator 5 places the product on the transportation carrier 611, the transverse movement module 61 drives the transportation carrier 611 to move, and the transportation carrier 611 will be moved to the front of the code reader 72. Then, the code reader 72 scans the identification code on the product on the transportation carrier 611 and feeds back the scanning result to the controller, so that the controller can obtain the relevant information of the current tested product.

[0057] As Figure 12 shown, the vision detection mechanism 9 includes a camera mounting frame 91, the camera mounting frame 91 is fixedly connected to the machine table 1, a CCD camera 92 and an annular light source 93 are provided on the camera mounting frame 91, the annular light source 93 is located directly below the CCD camera 92, the annular light source 93 is used to illuminate the product on the transportation carrier 611, the transverse movement module 61 can transport the transportation carrier 611 to directly below the CCD camera 92, and the CCD camera 92 is used to capture the image of the tested product in the product transportation groove 612. Specifically during operation, when the material taking module 62 places the tested product on the transportation carrier 611, the transverse movement module 61 drives the transportation carrier 611 to move, and the transportation carrier 611 will be moved to directly below the CCD camera 92. Then, the CCD camera 92 takes a picture of the product on the transportation carrier 611 and feeds back the image to the controller. The controller can judge whether the socket pins, the shape of the shell, etc. of the product are qualified by comparison, so as to judge whether it is a defective product.

[0058] As Figure 13As shown, the pressing and connecting mechanism 8 includes a pressing and mounting frame 83, which is fixedly connected to the machine base 1. The pressing module 81 includes a pressing cylinder 811, which is fixedly connected to the pressing and mounting frame 83. The connecting module 82 is mounted on the output end of the pressing cylinder 811. The connecting module 82 includes a connecting mounting base 822, which is fixedly connected to the output end of the pressing cylinder 811. A connecting cylinder 823 is provided on the connecting mounting base 822, and a connecting plug 821 is fixedly connected to the output end of the connecting cylinder 823. In practice, after the material handling module 62 places the product to be tested into the product placement slot 102 on the test fixture 10, it first controls the pressing cylinder 811 to operate, driving the connecting cylinder 823 and the connecting plug 821 to descend, so that the connecting plug 821 descends to the height aligned with the test fixture 10. Then, it controls the connecting cylinder 823 to operate, driving the connecting plug 821 to descend, so that the connecting plug 821 is inserted into the product in the product placement slot 102, making the product electrically connected to the controller, and also making the product to be tested abut and seal against the sealing ring 103. Then, it controls the external air source to inflate the inflation chamber 101, and controls the product in the product placement slot 102 to operate, and detects the air pressure in the inflation chamber 101. Afterwards, the controller can determine whether the product performance is qualified by comparative analysis. After the test is completed, it controls the pressing cylinder 811 and the connecting cylinder 823 to reset, and then the material handling module 62 can remove the tested product.

[0059] To limit and guide the movement of the conductive plug 821, multiple guide rods 812 are provided on the conductive mounting base 822. Guide sleeves 813 are respectively provided at corresponding positions on the pressing mounting bracket 83. The guide rods 812 pass through the corresponding guide sleeves 813 and are slidably connected to them. When the pressing cylinder 811 operates, the conductive mounting base 822 drives the guide rods 812 to slide within the guide sleeves 813. The cooperation between the guide rods 812 and the guide sleeves 813 limits and guides the movement of the conductive plug 821, improving the accuracy of the transmission.

[0060] In this embodiment, there are four guide rods 812, and the four guide rods 812 are respectively distributed at the four corner positions of the conductive mounting base 822.

[0061] This automotive air conditioning pipe pressure sensor testing equipment can automatically load, transfer, test, and unload materials, reducing manual intervention and improving the automation level of the equipment. It can meet the processing requirements of high quality and high efficiency. Moreover, the visual inspection mechanism 9 can automatically screen out defective products, and the defective product outflow module 4 can separate good and defective products for unloading, thereby reducing the labor intensity of operators.

[0062] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A testing device for automotive air conditioning pipeline pressure sensors, characterized in that: It includes a machine base and a controller. The machine base is equipped with a feeding module, a discharging module, a feeding and discharging robot, a product conveying module, a barcode scanning mechanism, a pressing and conducting mechanism, and a vision inspection mechanism, all of which are electrically connected to the controller. The loading and unloading robot is connected to the loading module, the unloading module and the product conveying module respectively. The loading and unloading robot can move the product to be tested from the loading module to the product conveying module, and can also move the tested product from the product conveying module to the unloading module. The machine is equipped with a testing fixture, which has an inflation chamber. The testing fixture is connected to an external air source, which can inflate the inflation chamber. The upper end of the testing fixture is equipped with a product placement slot, which is connected to the inflation chamber. The product transport module is connected to the testing fixture. The pressing and connecting mechanism includes a pressing module connected to the machine base. The output end of the pressing module is provided with a connecting module. The pressing module can drive the connecting module to move up and down. The connecting module is located directly above the product placement slot. The connecting module is provided with a connecting plug. The connecting module can drive the connecting plug to be inserted into or separated from the product in the product placement slot. The visual inspection mechanism is connected to the product transport module and is used to capture images of the products that have completed testing on the product transport module.

2. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 1, characterized in that: The feeding module includes a feeding cylinder, which is connected to the machine base. A feeding fixture is provided on the output end of the feeding cylinder. The feeding fixture is slidably connected to the machine base and has multiple product placement positions.

3. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 2, characterized in that: There are two feeding cylinders and two feeding fixtures, and they are set in a one-to-one correspondence, with the two feeding fixtures being staggered.

4. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 1, characterized in that: The loading and unloading robot includes a Y-axis module connected to the machine base. An X-axis module is provided on the output end of the Y-axis module, a Z-axis module is provided on the output end of the X-axis module, and a gripper cylinder is provided on the output end of the Z-axis module.

5. The automotive air conditioning pipe pressure sensor testing equipment according to claim 1, characterized in that: The product conveying module includes a transverse module and a material handling module. The transverse module is connected to the machine base and to the loading and unloading robot. The output end of the transverse module is equipped with a conveying carrier, and the conveying carrier is equipped with multiple product conveying slots.

6. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 5, characterized in that: The material handling module is connected to the transverse module. The output end of the material handling module is equipped with a gripping cylinder, and the output end of the gripping cylinder is equipped with two material handling jaws. The gripping cylinder can drive the two material handling jaws to close or separate from each other, and the material handling module can drive the material handling jaws to be positioned relative to the test fixture or the transport carrier respectively.

7. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 5, characterized in that: The visual inspection mechanism includes a camera mounting bracket connected to the machine base. The camera mounting bracket is equipped with a CCD camera and a ring light source. The ring light source is located directly below the CCD camera. The transverse module can transport the transport vehicle to the position directly below the CCD camera. The CCD camera is used to capture images of the tested products in the product transport trough.

8. The automotive air conditioning pipe pressure sensor testing equipment according to any one of claims 1-7, characterized in that: The pressing and guiding mechanism includes a pressing and mounting frame, the pressing and mounting module includes a pressing and mounting cylinder, the pressing and mounting cylinder is connected to the pressing and mounting frame, and the guiding module is connected to the output end of the pressing and mounting cylinder.

9. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 8, characterized in that: The conductive module includes a conductive mounting base, which is connected to the output end of the pressing cylinder. The conductive mounting base is equipped with a conductive cylinder, and the conductive plug is connected to the output end of the conductive cylinder.

10. The automotive air conditioning pipeline pressure sensor testing equipment according to claim 9, characterized in that: The conductive mounting base is provided with multiple guide rods, and the pressing mounting frame is provided with guide sleeves at corresponding positions of the guide rods. The guide rods pass through the corresponding guide sleeves and are slidably connected to the guide sleeves.

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