Multi-channel air tightness testing machine

Abstract

A multi-channel airtightness testing machine comprises a feeding conveying module, a discharging conveying module, multiple sets of testing modules, a recycling pipeline and a feeding and discharging pipeline; the feeding and discharging pipeline is used for conveying products to be tested and qualified products, and the recycling pipeline is used for conveying unqualified products; the feeding conveying module is used for conveying the products to be tested on the feeding and discharging pipeline to the testing modules, the testing modules perform airtightness testing on the products to be tested, the discharging conveying module is used for conveying the qualified products from the testing modules to the feeding and discharging pipeline and the unqualified products from the testing modules to the recycling pipeline according to the airtightness testing results; each set of testing modules comprises a guide slide rail and a testing base die slid on the guide slide rail, and two adjacent guide slide rails are arranged in parallel and at intervals.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to a multi-channel airtightness testing machine. Background Technology

[0002] In the manufacturing process of consumer electronics products such as mobile phones and tablets, the airtightness of key components such as the product casing directly affects the waterproof and dustproof performance and reliability of the equipment. Therefore, airtightness testing is an indispensable core process.

[0003] Currently, the airtightness testing equipment in the industry mainly falls into two categories: One type is traditional manually operated testing equipment, requiring operators to manually place the products to be tested at the testing station, start the testing program, and then manually sort the qualified and unqualified products after testing. This type of equipment not only consumes a lot of labor costs, but also suffers from poor consistency in manual operation, easily leading to testing errors due to fatigue and misjudgment. Furthermore, manual loading and unloading is inefficient and difficult to adapt to the high-efficiency operation requirements of modern production lines. The other type is initially automated single-channel testing equipment, which, while partially replacing manual loading and unloading, still has significant drawbacks. Its limited number of testing stations prevents simultaneous testing of multiple products, resulting in limited improvement in overall testing efficiency. Moreover, most of this equipment lacks a separate channel for recovering unqualified products, easily leading to mixing of qualified and unqualified products, requiring additional manpower for secondary sorting, further reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-channel airtightness testing machine. By setting up multiple independent testing modules, automated loading and unloading modules, an independent recycling line, and a test mold and pressing mechanism that can be precisely transferred, it can achieve simultaneous airtightness testing of multiple products, thereby improving testing efficiency, ensuring accurate product sorting, guaranteeing testing precision, and reducing labor costs.

[0005] The objective of this utility model is achieved through the following solution: This utility model discloses a multi-channel airtightness testing machine, including a machine base, as well as a feeding and handling module, an unloading and handling module, multiple testing modules, a recycling line and an unloading and loading line; Both the loading and unloading transport modules are mounted on the machine's support frame. The loading and unloading assembly line is used to transport products to be tested and qualified products, while the recycling assembly line is used to transport unqualified products. The loading and handling module is used to transport the products to be tested from the loading and unloading assembly line to the testing module. The testing module performs an airtightness test on the products to be tested. The unloading and handling module is used to transport qualified products from the testing module to the loading and unloading assembly line and unqualified products from the testing module to the recycling assembly line based on the airtightness test results. Each test module group includes a guide rail and a test base mold that slides on the guide rail, with adjacent groups of guide rails arranged in parallel at intervals. The guide slide rail is provided with a loading position, a testing position and a unloading position. The testing bottom mold can move back and forth between the loading position, the testing position and the unloading position along the guide slide rail to carry the product between the loading and unloading process and the testing process. Each test module group is also provided with a test top mold and a pressing mechanism located above the test position, corresponding to the test bottom mold. The pressing mechanism drives the test top mold to rise and fall in the vertical direction, so as to close with the test bottom mold and test the airtightness of the product to be tested.

[0006] Furthermore, the machine base is provided with a drive module for driving the test mold to slide along the guide rail, and the drive module is connected to the test mold in a transmission manner.

[0007] Furthermore, the bottom of the test mold is provided with a slider that is adapted to the guide rail, and the slider drives the test mold to slide along the guide rail between the loading position, the testing position and the unloading position.

[0008] Furthermore, the pressing mechanism is a pressing cylinder, which is fixed on the bracket, and the test top mold is connected to the movable end of the pressing cylinder.

[0009] Furthermore, the test mold is equipped with a sensor to sense the position information of the product on the guide rail.

[0010] Furthermore, the loading and unloading assembly line is equipped with a barcode scanner for identifying the QR code on the product to be tested.

[0011] Furthermore, both the loading and unloading conveying module and the unloading conveying assembly include a guide rail fixedly mounted on the bracket and a lifting mechanism slidably mounted on the guide rail. The movable end of the lifting mechanism is equipped with a material gripping component. The lifting mechanism located in the loading and unloading conveying module can travel back and forth along the guide rail between the loading position and the unloading / unloading conveyor line; the lifting mechanism located in the unloading conveying module can travel back and forth along the guide rail between the unloading position, the recycling conveyor line, and the unloading / unloading conveyor line.

[0012] Furthermore, the material gripping component includes a gripping suction cup, and the gripping suction cup grips the product by negative pressure adsorption.

[0013] Furthermore, the multi-channel airtightness testing machine also includes a PLC controller, which is electrically connected to the loading and unloading module, the testing module, the loading and unloading assembly line, and the recycling assembly line, and controls the coordinated operation of each component.

[0014] Furthermore, the loading and unloading assembly line is equipped with a guide and positioning component at the loading end, the guide and positioning component including a pair of guide arms and an interception unit located at the end of the pair of guide arms.

[0015] The advantages of this invention are that by setting up multiple sets of parallel and spaced independent test modules, multiple products can be tested for airtightness simultaneously, breaking through the efficiency bottleneck of traditional single-channel equipment. Combined with an automated loading and unloading module, product transfer requires no manual intervention, significantly increasing output per unit time. Product sorting is precise and free from mixing. Equipped with an independent recycling line, the loading and unloading module automatically returns qualified products to the loading and unloading line and guides unqualified products into the recycling line based on test results, achieving complete separation of qualified and unqualified products without the need for additional manual sorting, reducing labor costs and the risk of mixing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the multi-channel airtightness testing machine in an embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the multi-channel airtightness testing machine in an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the multi-channel airtightness testing machine from another angle in an embodiment of this utility model.

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

[0021] Figure 5 This is a schematic diagram of the internal structure of the test module from another angle in an embodiment of this utility model. Detailed Implementation

[0022] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0023] The terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0024] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0025] Please see Figures 1 to 5 This utility model discloses a multi-channel air tightness testing machine, including a machine base, and a loading and unloading transport module 10, an unloading transport module 20, multiple testing modules 30, a recycling line 40, and an unloading and loading line 50 arranged on the machine base. The loading and unloading module 10 and the unloading and unloading module 20 are both mounted on the machine tool support. The loading and unloading assembly line 50 is used to transport products to be tested and qualified products. The recycling assembly line 40 is used to transport unqualified products. The loading and handling module 10 is used to transport the products to be tested on the loading and unloading assembly line 50 to the testing module 30. The testing module 30 performs an airtightness test on the products to be tested. The unloading and handling module 20 is used to transport qualified products from the testing module 30 to the loading and unloading assembly line 50 and unqualified products from the testing module 30 to the recycling assembly line 40 according to the airtightness test results. Each test module 30 includes a guide rail 31 and a test bottom mold 32 that slides on the guide rail 31, with adjacent groups of guide rails 31 arranged in parallel at intervals. The guide slide rail 31 is provided with a loading position 311, a testing position 312 and a unloading position 313. The testing bottom mold 32 can move back and forth between the loading position 311, the testing position 312 and the unloading position 313 along the guide slide rail 31 to carry the product between the loading and unloading process and the testing process. Each test module 30 is also provided with a test top mold 33 and a pressing mechanism 34 located above the test position 312, corresponding to the test bottom mold 32. The pressing mechanism 34 drives the test top mold 33 to rise and fall in the vertical direction, so as to close with the test bottom mold 32 and test the air tightness of the product to be tested.

[0026] The multi-channel airtightness testing machine also includes a PLC controller 60, which is electrically connected to the loading and unloading module 10, the unloading and unloading module 20, the testing module 30, the loading and unloading assembly line 50, and the recycling assembly line 40, and controls the coordinated operation of each component.

[0027] Please see Figure 5 The machine base is equipped with a drive module 35 for driving the test mold 32 to slide along the guide rail 31. The drive module 35 is connected to the test mold 32 in a transmission manner. The bottom of the test mold 32 is provided with a sliding block that matches the drive module 35, and the test mold 32 slides on the guide rail 31 through the sliding block. The guide rail 31 is fixed to the machine base mounting reference surface, extends in a direction parallel to the production line, and is provided with a loading position 311, a testing position 312, and a unloading position 313 in sequence.

[0028] Please see Figures 2 to 3 The pressing mechanism 34 is a pressing cylinder, which is fixed on the bracket. The test top mold 33 is connected to the movable end of the pressing cylinder. The cylinder body of the pressing cylinder is fixed on the bracket of the machine tool by a mounting plate. The test top mold 33 is detachably connected to the movable end of the pressing cylinder. The pressing cylinder can drive the test top mold 33 to rise and fall vertically, forming a sealed space with the test bottom mold 32, and cooperate with the airtightness testing system to complete the test.

[0029] The test mold 32 is equipped with a sensor for sensing the position information of the product on the guide rail 31. The sensor is embedded in the edge of the bearing surface of the test mold 32, with its sensing end facing the product placement area. It is used to sense in real time whether the product is placed in the correct position, whether it has shifted or fallen during the transfer process, and converts the position information into an electrical signal that is transmitted to the PLC controller 60 as the basis for equipment operation control.

[0030] The loading / unloading assembly line 50 is equipped with a barcode scanner 51 for identifying QR codes on the products under test. The barcode scanner 51 is fixed above the assembly line by a bracket, with its scanning lens perpendicular to the conveyor surface. It identifies the QR codes on the surface of the products under test and transmits the decoded unique product identification information to the PLC controller 60, thus binding product information with test data. When the products under test are conveyed to the preset scanning area via the loading / unloading assembly line 50, the barcode scanner 51 starts the scanning program, identifies the QR codes on the product surface, obtains unique identification information such as product model, production batch, and serial number, and transmits the information to the PLC controller 60 in real time. If QR code recognition fails, the control unit triggers an alarm, prompting manual intervention. The loading / unloading assembly line 50 has a guide positioning component at the loading end. The guide positioning component includes a pair of guide arms 52 and an intercepting unit 53 located at the ends of the guide arms 52. The spacing between the guide arms 52 gradually decreases from the input end to the output end to adapt to the dimensions of the products under test. The interception unit 53 is a cylinder-driven interception plate that is electrically connected to the PLC controller 60. It can be raised and lowered along the direction perpendicular to the conveyor belt to temporarily intercept products for positioning.

[0031] Both the loading and unloading conveying module 10 and the unloading conveying assembly include a guide rail 11 fixedly mounted on the bracket and a lifting mechanism 12 slidably mounted on the guide rail 11. A material gripping component is mounted on the movable end of the lifting mechanism 12. The lifting mechanism 12 in the loading and unloading module 10 can travel back and forth along the guide rail 11 between the loading position 311 and the unloading / unloading conveyor line 50; the lifting mechanism 12 in the unloading and unloading module 20 can travel back and forth along the guide rail 11 between the unloading position 313, the recycling conveyor line 40, and the unloading / unloading conveyor line 50. The guide rail 11 is fixedly mounted on the bracket, providing precise sliding guidance for the lifting mechanism 12. The lifting mechanism 12 is slidably mounted on the guide rail 11 and achieves linear movement along the guide rail 11 via a motor drive. The movable end of the lifting mechanism 12 is equipped with a material gripping component, which can move up and down under motor drive to adjust the height of the material gripping component, adapting to the material gripping and placement needs of different heights. The gripping assembly includes a gripping suction cup 13, used to grip products by negative pressure adsorption. The gripping suction cup 13 grips the product by adsorbing the upper surface of the product by negative pressure, and releases the product by canceling the negative pressure state inside the gripping suction cup 13.

[0032] The product to be tested enters from the loading end of the loading / unloading assembly line 50 and moves along the guide arm 52. The guide arm 52 guides the product to gradually adjust its posture through a gradual spacing to avoid deviation during the conveying process. When the product moves to the preset positioning position at the end of the guide arm 52, the PLC controller 60 instructs the interception unit 53 to temporarily intercept the product, so that the product is accurately positioned in the picking area, ensuring that the gripping point of the loading and conveying module 10 is consistent. After the product is positioned, the PLC controller 60 triggers the barcode scanner 51 to start, recognizes the QR code on the product surface and receives the unique identification information, which is stored in the internal register. After scanning, the PLC controller 60 instructs the loading / unloading assembly line 50 to briefly convey the product to the picking position. The guide rail 11 drives the lifting mechanism 12 to move to the picking position, the lifting mechanism 12 descends, and the gripping component adsorbs the product. After the lifting mechanism 12 rises, it moves along the guide rail 11 to the loading position 311 of the test module 30, descends, and smoothly places the product on the test base mold 32. The sensor on the test mold 32 detects the product's arrival and sends a loading completion signal to the PLC controller 60. The PLC controller 60 records the binding relationship between the product and the corresponding test module 30. Subsequently, the drive module 35 is instructed to move the test mold 32 along the guide rail 31 from the upper material position to the test position 312. The sensor continuously provides feedback on the product's position to ensure accurate positioning before sending an action command to the pressing mechanism 34. The pressing cylinder drives the test top mold 33 to descend, tightly closing with the test mold 32 to form a sealed space. The PLC controller 60 simultaneously starts the airtightness test system, introducing gas at a preset pressure into the sealed space, collecting pressure change data in real time and binding it to the product information for storage. The airtightness of the product is judged based on the pressure changes. After the test is completed, the PLC controller 60 instructs the pressing cylinder to raise and reset the test top mold 33, and the drive module 35 to move the test mold 32 to the unloading position 313. After the sensor sends an unloading ready signal, the PLC controller 60 instructs the unloading and handling module 20 to operate according to the test results. Qualified products are transported back to the loading / unloading line 50, while unqualified products are transferred to the recycling line 40, completing the sorting process. After unloading, the sensor sends a product removal signal, and the PLC controller 60 instructs the test mold 32 to return to the loading position 311. The loading / unloading line 50 continues to transport the next product, the guide positioning component repeats the above positioning process, and the loading and transport module 10 simultaneously prepares to grab the product, entering the next test cycle, realizing continuous automated operation.

[0033] This utility model provides a multi-channel airtightness testing machine that, through multiple sets of parallel and spaced independent testing modules 30, can simultaneously perform airtightness testing on multiple products to be tested, breaking through the efficiency bottleneck of traditional single-channel or dual-channel equipment. Combined with an automated loading and unloading module 20, product transfer requires no manual intervention, significantly increasing output per unit time. Product sorting is precise and free from mixing. Equipped with an independent recycling line 40, the loading and unloading module 20 can automatically return qualified products to the loading and unloading line 50 and guide unqualified products into the recycling line 40 based on test results, achieving complete separation of qualified and unqualified products without the need for additional manual sorting, reducing labor costs and the risk of mixing.

Claims

1. A multi-channel airtightness testing machine, comprising a machine base, characterized in that, It also includes a loading and unloading module, an unloading and unloading module, multiple testing modules, a recycling line, and a loading and unloading line; Both the loading and unloading transport modules are mounted on the machine's support frame. The loading and unloading assembly line is used to transport products to be tested and qualified products, while the recycling assembly line is used to transport unqualified products. The loading and handling module is used to transport the products to be tested from the loading and unloading assembly line to the testing module. The testing module performs an airtightness test on the products to be tested. The unloading and handling module is used to transport qualified products from the testing module to the loading and unloading assembly line and unqualified products from the testing module to the recycling assembly line based on the airtightness test results. Each test module group includes a guide rail and a test base mold sliding on the guide rail, with adjacent groups of guide rails arranged in parallel at intervals. The guide slide rail is provided with a loading position, a testing position and a unloading position. The testing bottom mold can move back and forth between the loading position, the testing position and the unloading position along the guide slide rail to carry the product between the loading and unloading process and the testing process. Each test module group is also provided with a test top mold and a pressing mechanism located above the test position, corresponding to the test bottom mold. The pressing mechanism drives the test top mold to rise and fall in the vertical direction, so as to close with the test bottom mold and test the airtightness of the product to be tested.

2. The multi-channel airtightness testing machine according to claim 1, characterized in that, The machine base is equipped with a drive module for driving the test mold to slide along the guide rail, and the drive module is connected to the test mold in a transmission manner.

3. The multi-channel airtightness testing machine according to claim 1, characterized in that, The bottom of the test mold is equipped with a slider that is adapted to the guide rail. The slider drives the test mold to slide along the guide rail between the loading position, the testing position and the unloading position.

4. The multi-channel airtightness testing machine according to claim 1, characterized in that, The pressing mechanism is a pressing cylinder, which is fixed on the bracket, and the test top mold is connected to the movable end of the pressing cylinder.

5. The multi-channel airtightness testing machine according to claim 1, characterized in that, The test mold is equipped with sensors to sense the position of the product on the guide rail.

6. The multi-channel airtightness testing machine according to claim 1, characterized in that, The loading and unloading assembly line is equipped with a barcode scanner for identifying the QR codes on the products to be tested.

7. The multi-channel airtightness testing machine according to claim 1, characterized in that, Both the loading and unloading conveying module and the unloading conveying assembly include a guide rail fixedly mounted on the bracket and a lifting mechanism slidably mounted on the guide rail. The movable end of the lifting mechanism is equipped with a material gripping component. The lifting mechanism located in the loading and unloading conveying module can travel back and forth along the guide rail between the loading position and the unloading / unloading conveyor line; the lifting mechanism located in the unloading conveying module can travel back and forth along the guide rail between the unloading position, the recycling conveyor line, and the unloading / unloading conveyor line.

8. The multi-channel airtightness testing machine according to claim 7, characterized in that, The material gripping component includes a gripping suction cup, and the gripping suction cup grips the product by negative pressure adsorption.

9. The multi-channel airtightness testing machine according to claim 1, characterized in that, The multi-channel airtightness testing machine also includes a PLC controller, which is electrically connected to the loading and unloading module, the testing module, the loading and unloading assembly line, and the recycling assembly line, and controls the coordinated operation of each component.

10. The multi-channel airtightness testing machine according to claim 1, characterized in that, The loading and unloading assembly line is equipped with a guide and positioning component at the loading end. The guide and positioning component includes a pair of guide arms and an interception unit located at the ends of the pair of guide arms.

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