WO2024007761A1 - 压紧机构、气密测试压紧装置及气密测试系统 - Google Patents

压紧机构、气密测试压紧装置及气密测试系统 Download PDF

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Publication number
WO2024007761A1
WO2024007761A1 PCT/CN2023/096426 CN2023096426W WO2024007761A1 WO 2024007761 A1 WO2024007761 A1 WO 2024007761A1 CN 2023096426 W CN2023096426 W CN 2023096426W WO 2024007761 A1 WO2024007761 A1 WO 2024007761A1
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WO
WIPO (PCT)
Prior art keywords
pressing
bearing member
piece
tested
guide
Prior art date
Application number
PCT/CN2023/096426
Other languages
English (en)
French (fr)
Inventor
何木清
王善德
周光伟
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2024007761A1 publication Critical patent/WO2024007761A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Definitions

  • This application relates to the technical field of testing equipment, in particular to a compression mechanism, an airtight testing compression device and an airtight testing system.
  • this application provides a pressing mechanism, including: a bearing member; at least two pressing structures, spaced apart from the bearing member, each pressing structure has a pressing surface, and the pressing structure is configured to be able to The bearing is movable to adjust the distance D between the pressing surface and the bearing along the preset direction; the locking structure is used to lock the movable operation of each pressing structure.
  • the above-mentioned pressing mechanism is provided with at least two pressing structures on the bearing member, and the pressing structures are configured to be movable on the bearing member.
  • each compression structure is pressed against the piece to be tested. If the surface of the piece to be tested is irregular or concave and convex, the distance D between each pressing surface and the load-bearing part can be changed through the movable pressing structure, so that each pressing surface can resist the surface of the piece to be tested. superior.
  • the locking structure is used to lock each pressing structure, so that the curved surface formed by the joining of each pressing surface fits the surface of the test piece more closely, achieving effective imitation and ensuring that the surface of the test piece can be Effective compression.
  • the locking structure can be unlocked and each pressing structure can be adjusted so that the pressing mechanism can adaptively press on the parts to be tested of different shapes. It has high compatibility and can effectively meet the pressing requirements in testing of different surface shapes.
  • each compression structure includes an adjustment piece and an extrusion piece connected to the adjustment piece.
  • the compression surface is provided on a side of the extrusion piece facing away from the bearing member.
  • the adjustment piece is configured to be able to move on the bearing piece.
  • the movable and locking structure is used to lock the movable operation of the adjusting member.
  • the pressing structure is designed as an adjusting piece and an extruding piece, so that during the pressing process, only the adjusting piece is moved to make each pressing surface contact the piece to be tested; after the collision, the locking structure only needs to be adjusted to It can be locked by simply moving the parts, which is helpful to improve the convenience of the pressing operation.
  • the adjusting member is configured to move in a preset direction on the bearing member, and the locking structure is used to lock the adjusting member on the bearing member.
  • designing the movable mode of the adjusting member to move relative to each other makes it more convenient to adjust the distance between the pressing surface and the bearing member, which is conducive to further improving the testing efficiency of the piece to be tested.
  • the bearing member is provided with a through hole corresponding to the pressing structure, and the adjusting member is slidably disposed in the through hole.
  • the perforations are used to smooth the relative movement of the adjusting member relative to the bearing member, thereby making it more convenient to adjust the distance between the pressing surface and the bearing member, which is beneficial to improving the efficiency of air tightness testing.
  • the piece to be tested has a matching area corresponding to the pressing surface, and the moving stroke L of each adjustment member is greater than the matching area at the highest position and the matching area at the lowest position.
  • the extrusion part is provided with a first guide part
  • the bearing part is provided with a second guide part
  • the first guide part and the second guide part guide and cooperate in a preset direction.
  • the first guide part is a guide hole
  • the second guide part is a guide shaft that passes through the guide hole.
  • This design uses the guide hole to cooperate with the guide shaft to make the adjustment of the extruded part on the bearing part smoother, which is beneficial to improving the efficiency of air tightness testing.
  • a linear bearing is sleeved in the guide hole, and the guide shaft passes through the inner ring of the linear bearing. In this way, it is helpful to further improve the smoothness of the guide shaft sliding in the guide hole.
  • first guide parts there are at least two first guide parts, and all first guide parts are arranged at intervals around the outer periphery of the adjusting member. In this way, the extruded parts are effectively guided in the circumferential direction when adjusting the distance, thereby making the adjustment of the distance between the pressing surface and the bearing part smoother, and the profiling effect of the test piece being better.
  • the locking structure includes at least two locking pieces, the locking pieces correspond to the pressing structure one-to-one, and the locking pieces are used to lock the movable operation of the corresponding pressing structure. In this way, the locking operation of each pressing structure is completed by an independent corresponding locking piece, which makes each pressing operation independent and facilitates testing of the pressing operation.
  • the application provides an airtight test compression device, including: a compression mechanism as described in any of the above items; a driver, drivingly connected to the carrier, for driving the carrier toward or away from the target along a preset direction. Test piece movement. like This allows each compression structure to be adaptively adjusted during the test compression process to ensure that each compression surface can be pressed against the piece to be tested, achieving effective imitation and improving air tightness testing efficiency.
  • the airtight test compression device also includes a sensor and a controller, and the piece to be tested has a matching area that corresponds to the compression surface; wherein, the sensor is configured to: when the bearing member moves into the When a pressing surface comes into contact with the lowest fitting area on the part under test, the sensor sends a trigger signal to the controller to control the driver to stop working.
  • the sensor is used to determine whether all the pressing surfaces are in contact with the piece to be tested, so that the driver can be automatically controlled to stop working, thereby automating the control of the airtight testing process and improving testing efficiency.
  • the airtight test pressing device also includes a limiting member provided on the bearing member.
  • the sensor Induction fit with the limiter. In this way, by using the limiter and the sensor to cooperate, it can be accurately determined whether each pressing surface is in contact with the piece to be tested, which is beneficial to improving the compression effect of the piece to be tested.
  • the airtight test compression device further includes a fixed base.
  • the driver includes a body and a driving shaft driven to telescope by the body.
  • the main body is installed on the fixed base, and the driving shaft is connected to the bearing member. In this way, it is convenient for the driving shaft to output power to the bearing member and ensures that the movement of the bearing member is more stable.
  • this application provides an air-tightness testing system, including: an air-tightness testing compression device such as any of the above; an airtightness tester used to obtain the pressure change value of the component to be tested after inflation.
  • the above-mentioned air-tight testing system adopts the above compression structure.
  • the component to be tested will not easily cause structural deformation due to the pressure difference between the inside and outside.
  • the locking structure can be unlocked and each pressing structure can be adjusted so that the pressing mechanism can adaptively press on parts to be tested of different shapes. It has high compatibility and can effectively meet the pressing needs in testing of different surface shapes.
  • the airtight testing system further includes a bracket, and the airtight testing compression device is installed on the bracket. In this way, the air-tight test compression device is stably fixed through the bracket, ensuring that the air-tight test can be carried out stably.
  • the airtight testing system further includes a handling device, and the handling equipment is used to convey the piece to be tested to below the airtight testing compression device.
  • the handling equipment is used to convey the piece to be tested to below the airtight testing compression device.
  • Figure 1 is a schematic structural diagram of a pressing mechanism according to some embodiments of the present application.
  • Figure 2 is a schematic diagram of the compression structure according to some embodiments of the present application.
  • Figure 3 is a schematic diagram of the cooperation between the pressing mechanism and the handling equipment according to some embodiments of the present application.
  • Figure 4 is a schematic structural diagram of an air-tight testing compression device according to some embodiments of the present application.
  • Figure 5 is a schematic structural diagram of an airtight testing system according to some embodiments of the present application.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to more than two (including two).
  • multiple groups refers to two or more groups (including two groups), and “multiple pieces” refers to It is more than two pieces (including two pieces).
  • the air tightness test of a battery pack is used as an example for explanation. However, it should be noted that this should not be interpreted as limiting the scope of protection of this application.
  • the battery pack needs to be inflated to determine whether pressure relief will occur in the battery pack. However, during the inflation process, the battery pack will bulge and the structure will deform. This will not only destroy the original structure of the battery pack, but also affect the air tightness test results.
  • a pressure plate that matches the surface of the battery pack is usually used. During the inflation process, the pressure plate is pressed against the surface of the battery pack to balance the pressure inside and outside the battery pack and avoid affecting the test due to structural deformation. Reliability of results.
  • the test compression device has poor compatibility and cannot effectively meet the compression requirements during testing with different surface shapes, resulting in a decrease in air tightness testing efficiency.
  • the pressing structure is configured to be movable on the bearing member to adjust the distance D between the pressing surface and the bearing member along a preset direction.
  • the locking structure can lock the movable operation of each pressing structure.
  • At least two pressing structures are provided on the bearing member, and the pressing structures are configured to be movable on the bearing member.
  • each compression structure is pressed against the piece to be tested. If the surface of the piece to be tested is irregular or concave and convex, the distance D between each pressing surface and the load-bearing part can be changed through the movable pressing structure, so that each pressing surface can resist the surface of the piece to be tested. superior.
  • the locking structure is used to lock each pressing structure, so that the curved surface formed by the joining of each pressing surface fits the surface of the test piece more closely, achieving effective imitation and ensuring that the surface of the test piece can be Effective compression.
  • the component under test will not be easily deformed due to the pressure difference between the inside and outside.
  • the locking structure can be unlocked and each pressing structure can be adjusted so that the pressing mechanism can adaptively press on the parts to be tested of different shapes. It has high compatibility and can effectively meet the pressing requirements in testing of different surface shapes.
  • the compression mechanism provided by this application can be applied to any test that requires compression operations, and is not limited to the airtight testing process of battery packs.
  • the present application provides a pressing mechanism 100 .
  • the pressing mechanism 100 includes: a bearing member 10 and at least two pressing structures 20 . At least two pressing structures 20 are spaced apart from the bearing member 10 .
  • Each pressing structure 20 has a pressing surface 21 , and the pressing structure 20 is configured to be movable on the bearing 10 to adjust the distance D between the pressing surface 21 and the bearing 10 along the preset direction X.
  • the locking structure 30 is used to lock the movable operation of each pressing structure 20 .
  • the bearing member 10 refers to a structure that can accommodate multiple compression structures 20 to be installed at intervals. It has a certain structural rigidity so as to transmit pressure to the multiple compression structures 20 during the process of compressing the object to be tested 700 .
  • the material of the bearing member 10 is not specifically limited, as long as the pressing structure 20 can press the piece to be tested 700 .
  • the bearing member 10 can be designed as, but is not limited to, a plate-like structure.
  • the device under test 700 may be but is not limited to a battery pack, etc.
  • the pressing structure 20 refers to a structure that can move on the bearing member 10 and exert pressure on the object to be tested 700 .
  • the pressing structure 20 moves on the bearing member 10 in a manner that the pressing structure 20 moves relative to the bearing member 10, or the pressing structure 20 itself has a movable function.
  • the pressing structure 20 is a telescopic structure. Sectional rods, telescopic scissor structures, etc.
  • the pressing surface 21 refers to the side of the pressing structure 20 that is in contact with the piece to be tested 700 , and may be a flat surface or a curved surface.
  • a flexible layer can be provided on the pressing surface 21, such as a rubber layer, a cloth layer, etc.
  • the locking structure 30 refers to a structure that can lock the movable operation of the pressing structure 20.
  • the locking structure 30 can be used to lock and press. Structure 20, so that Therefore, the movable operation cannot be performed.
  • the distance D between the pressing surface 21 and the bearing member 10 cannot be adjusted, that is, each pressing surface 21 is attached to the surface of the piece to be tested 700 .
  • the locking structure 30 locks the movable operation of the pressing structure 20, and its implementation method can be determined according to the activity type of the pressing structure 20, for example: when the movement of the pressing structure 20 is relative to the movement of the bearing member 10, such as the pressing structure 20 During the locking process, the locking structure 30 can fix the pressing structure 20 on the bearing 10 so that it cannot move relative to the bearing 10. At this time, the locking structure 30 can be, but is not limited to, a pin, a nut, a clamp, or a pin.
  • KP lock standard parts, the specific structure can be directly referred to existing products, will not be described in detail here
  • it can also be an electric device, that is, when the adjustment of each pressing surface 21 is completed, the locking structure 30 is automatically triggered Lock the hold-down structure 20.
  • the locking structure 30 When the movement of the pressing structure 20 is its own activity, the locking structure 30 only needs to lock the movable function of the pressing structure 20 , for example, locking the hinge in the pressing structure 20 so that it cannot rotate, expand or contract.
  • the locking structure 30 can lock the movable operations of all the compression structures 20 at the same time through the same component in the locking structure 30, or can lock the compression structures 20 one by one through multiple components in the locking structure 30. activity operations.
  • the component under test 700 will not be easily deformed due to the pressure difference between the inside and outside.
  • the pressing mechanism 100 can adaptively press on the parts to be tested 700 of different shapes, with high compatibility, and can effectively meet the testing pressure of different surface shapes. Urgent demand.
  • each pressing structure 20 includes an adjustment member 22 and an extrusion member 23 connected to the adjustment member 22 .
  • the pressing surface 21 is provided on the side of the extrusion piece 23 facing away from the bearing member 10 .
  • the adjusting member 22 is configured to be movable on the bearing member 10 , and the locking structure 30 is used to lock the movable operation of the adjusting member 22 .
  • the adjusting member 22 refers to a structure that can be movable on the bearing member 10 to drive the extrusion member 23 to move, so as to change the distance between the pressing surface 21 and the bearing member 10 .
  • the movement of the adjusting member 22 on the bearing member 10 may be relative movement, relative telescopic movement, etc.
  • the extruded piece 23 refers to the component that is in direct contact with the piece to be tested 700. In order to enable the surface of the piece to be tested 700 to exert a certain pressure, the extruded piece 23 needs to have a certain stiffness to avoid the occurrence of the problem when pressing the piece to be tested 700. Bend.
  • connection method between the adjusting part 22 and the extruded part 23 may be, but is not limited to, bolted connection, threaded socket, clamping, riveting, welding, bonding, integrated molding, etc.
  • one-piece molding can be die-casting, injection molding, extrusion and other processes.
  • the pressing structure 20 is designed as an adjusting member 22 and an extruding member 23. In this way, during the pressing process, only the adjusting member 22 can be moved to make each pressing surface 21 abut against the piece to be tested 700; after the collision, only the The locking structure 30 only needs to lock the movement of the adjusting member 22 . In this way, it is helpful to improve the convenience of the pressing operation.
  • the adjusting member 22 is configured to move along the preset direction X on the bearing member 10 .
  • the locking structure 30 is used to lock the adjusting member 22 on the bearing member 10 .
  • the adjusting member 22 moves along the preset direction
  • the adjusting member 22 is provided with external threads, and the adjusting member 22 is driven to move relative to the bearing member 10 through threaded engagement.
  • the locking structure 30 can be designed as two clip structures fixed on the carrier 10. When the test piece 700 is placed on the test piece 700, the two clip structures will be folded together to clamp the adjusting member 22 and the like.
  • Designing the movable mode of the adjusting member 22 to move relative to each other makes the adjustment of the distance between the pressing surface 21 and the bearing member 10 more convenient, which is conducive to further improving the testing efficiency of the piece to be tested 700 .
  • the bearing member 10 is provided with a through hole 11 corresponding to the pressing structure 20 , and the adjusting member 22 is slidably disposed in the through hole 11 .
  • the extrusion piece 23 that first contacts the piece to be tested 700 will continue to press down as the bearing member 10 .
  • the extrusion piece 23 reacts with the adjustment member 22 so that it is opposite to the bearing member 10 in the through hole 11
  • the tight surface 21 is used to profile the surface of the test piece 700 .
  • the number of the through holes 11 should be consistent with the number of the pressing structures 20 , that is, one adjusting member 22 is correspondingly installed in one through hole 11 .
  • the shape of the through hole 11 may be consistent with the cross-sectional shape of the adjusting member 22, or may be inconsistent. Of course, if the shape of the through hole 11 is consistent with the cross-sectional shape of the adjustment member 22, the movement of the adjustment member 22 in the through hole 11 will be smoother.
  • a limiting portion 242 can be provided at one end of the adjusting member 22.
  • the cross-sectional area or length of the limiting portion 242 is larger than the corresponding size of the through hole 11.
  • the use of the through holes 11 allows the adjustment member 22 to move smoothly relative to the bearing member 10 , thereby making it more convenient to adjust the distance between the pressing surface 21 and the bearing member 10 , which is beneficial to improving the efficiency of air tightness testing.
  • the piece to be tested 700 has a mating area 710 that corresponds to the pressing surface 21 one-to-one.
  • the movement stroke L of each adjusting member 22 is greater than the height difference h between the fitting area 710 at the highest position and the fitting area 710 at the lowest position.
  • the moving stroke L of the adjusting member 22 refers to the maximum displacement that the adjusting member 22 can move on the bearing member 10. For example, when the adjusting member 22 moves upward, the extrusion member 23 conflicts with the bearing member 10. At this time, the adjusting member 22 moves The distance is the moving stroke L of the adjusting member 22.
  • the fitting area 710 at the highest position refers to the highest convex part of the surface of the component to be tested 700; the fitting area 710 at the lowest position refers to the deepest concave part of the surface of the component to be tested 700.
  • the movement stroke of the adjustment member 22 on the bearing member 10 directly determines the adjustment range of the distance D between the extrusion member 23 and the bearing member 10.
  • the movement stroke L of the adjustment member 22 is 150 mm to 450 mm. If the moving stroke of the adjusting member 22 is small When the height difference h between the two matching areas 710 is, it will cause that after one of the extrusion parts 23 collides with the carrier 10, the other extrusion part 23 has not yet contacted the corresponding matching area 710, which cannot guarantee All the pressing surfaces 21 can resist the surface to be measured, and effective modeling effect cannot be achieved.
  • the length of the adjusting member 22 can be directly lengthened during actual production.
  • the extrusion piece 23 is provided with a first guide portion 24 .
  • the carrier 10 is provided with a second guide portion 12 .
  • the first guide part 24 guides and cooperates with the second guide part 12 in the preset direction X.
  • the first guide part 24 may be a column or rod-shaped structure, and the second guide part 12 may be a groove or hole-shaped structure; or the first guide part 24 may be a groove or hole-shaped structure, and the second guide part 12 may be a column or rod-shaped structure. . It should be noted that when the first guide part 24 has a groove or hole-like structure and the second guide part 12 has a column or rod-like structure, it should be avoided that the second guide part 12 contacts the object to be tested 700 during the pressing process. If structural interference is caused, the first guide part 24 can be disposed on the part of the extruded part 23 that exceeds the part to be tested 700 .
  • the adjustment of the extrusion piece 23 in the preset direction helps to improve the efficiency of air tightness testing.
  • the first guide part 24 is a guide hole 121 .
  • the second guide part 12 is a guide shaft 241 that penetrates the guide hole 121 .
  • the cross-sectional shape of the guide shaft 241 should be consistent with the shape of the guide hole 121, so that the guide shaft 241 moves smoothly in the guide hole 121.
  • the first guide part 24 is designed as a guide hole 121
  • the second guide part 12 is designed as a guide shaft 241. In this way, when effective guidance is achieved, the guide shaft 241 will not conflict with the object to be tested 700 and cause structural interference. .
  • the guide hole 121 is used to cooperate with the guide shaft 241, so that the adjustment of the extrusion piece 23 on the bearing member 10 is smoother, which is beneficial to improving the air tightness testing efficiency.
  • a linear bearing 122 is set inside the guide hole 121 .
  • the guide shaft 241 is inserted into the inner ring of the linear bearing 122 .
  • Linear bearing 122 refers to a linear motion system used for linear travel in conjunction with cylindrical shafts. According to the shape, it can be divided into straight type, flange type, open type, etc.
  • Providing the linear bearing 122 in the guide hole 121 is helpful to further improve the smoothness of the guide shaft 241 sliding in the guide hole 121 .
  • first guide parts 24 there are at least two first guide parts 24 , and all first guide parts 24 are at least two.
  • the directional portions 24 are arranged at intervals around the outer circumference of the adjusting member 22 .
  • the number of first guide parts 24 may be two, three or more. The specific number may be determined according to the actual size and design requirements of the extruded part 23. For example, there are four first guide parts 24, two of which may be four. One first guide portion 24 is located on one side of the adjusting member 22, and the other two first guide portions 24 are located on the other side of the adjusting member 22, etc.
  • All the first guide parts 24 are arranged around the outer periphery of the adjusting member 22 so that the extruded member 23 is effectively guided in the circumferential direction when adjusting the spacing, thereby making the adjustment of the spacing between the pressing surface 21 and the bearing member 10 smoother.
  • the profiling effect of piece 700 is better.
  • the locking structure 30 includes at least two locking pieces 31 .
  • the locking parts 31 correspond to the pressing structures 20 one-to-one, and the locking parts 31 are used to lock the movable operation of the corresponding pressing structures 20 .
  • the locking member 31 refers to a structure that can lock the movable operation of the pressing structure 20 so that the distance D between each pressing surface 21 and the bearing member 10 cannot be further adjusted after adjustment.
  • the locking member 31 may be, but is not limited to, a pin, a nut, a holding device, a KP lock, etc.
  • the locking structure 30 is designed as a plurality of locking pieces 31 so that the locking operation of each pressing structure 20 is completed by an independent corresponding locking piece 31. This makes each pressing operation independent and facilitates testing of the pressing operation.
  • the present application provides an airtight testing compression device.
  • the airtight test compression device includes: a driver 200 and a compression mechanism 100 as in any of the above solutions.
  • the driver 200 is drivingly connected to the carrier 10 and is used to drive the carrier 10 to move toward or away from the object to be tested 700 along the preset direction X.
  • the driver 200 refers to a device that can drive the pressing mechanism 100 to move toward or away from the object to be tested 700 along the preset direction Structure, such as: motor, gear, rack combination structure, motor, screw, slider and other combination structures, etc.
  • the driver 200 drives the carrier 10 to move in the preset direction X, and the adjustment direction of the distance D between the pressing surface 21 and the carrier 10 is also the preset direction X. Therefore, during the test compression process, the driver 200 drives the carrier 10.
  • the structure 20 contacts the piece to be tested 700 in sequence, and the entire process is automatically adjusted to ensure that each pressing surface 21 can be pressed against the piece to be tested 700 to achieve effective imitation.
  • the driver 200 is used to drive the carrier 10 to move along the preset direction , improve the efficiency of air tightness testing.
  • the airtight testing and compression device further includes a sensor 300 and a controller.
  • the piece to be tested 700 has a matching area 710 that corresponds to the pressing surface 21 one-to-one.
  • the sensor 300 is configured as: When the bearing member 10 moves to the point where one of the pressing surfaces 21 comes into contact with the lowest-position mating area 710 of the piece to be tested 700 , the sensor 300 sends a trigger signal to the controller to control the driver 200 to stop working.
  • a controller refers to a device with processing, calculation, execution and other functions, such as, but not limited to, an editable logic controller, an electronic control unit, a microcontroller, etc.
  • the sensor 300 refers to a device that receives signals or stimuli and reacts, and can convert a physical or chemical quantity to be measured into another corresponding output, such as an infrared sensor, a pressure-sensitive sensor, etc.
  • the sensor 300 is electrically connected to the controller and can send a trigger signal to the controller.
  • the controller can also be electrically connected to the locking structure 30, that is, the locking structure 30 is an electronic control device.
  • the control driver 200 stops working, and the locking structure 30 starts working to lock each pressing structure 20. .
  • the sensor 300 can be triggered in many ways, such as: arranging the sensor 300, such as a sensing piece, etc., on the matching area 710 at the lowest position or the corresponding pressing surface 21; or, on the bearing member A shielding structure is provided on the sensor 10 . If the pressing surface 21 contacts the matching area 710 at the lowest position, the shielding structure will block the sensor 300 .
  • the sensor 300 is used to determine whether all the pressing surfaces 21 are in contact with the piece to be tested 700, so as to automatically control the driver 200 to stop working, thereby automating the control of the airtight testing process and improving testing efficiency.
  • the air-tight testing compression device further includes a limiting member 310 provided on the bearing member 10 .
  • the bearing member 10 moves until one of the pressing surfaces 21 contacts the lowest position fitting area 710 on the piece to be tested 700 , the sensor 300 and the limiting member 310 are inductively matched.
  • the limiting member 310 can be designed as a sheet-like structure or a rod-like structure.
  • the limiting member 310 is driven by the bearing member 10 to move just within the sensing range of the sensor 300 , so that the sensor 300 Get the corresponding signal.
  • each pressing surface 21 is in contact with the piece to be tested 700, which is beneficial to improving the compression effect of the piece to be tested 700.
  • the airtight testing compression device further includes a fixed base 400 .
  • the driver 200 includes a body 210 and a driving shaft 220 driven to telescope by the body 210 .
  • the body 210 is installed on the fixed base 400 , and the driving shaft 220 is connected to the bearing 10 .
  • the body 210 refers to the part of the driver 200 that can output power, such as the cylinder part of a cylinder, a hydraulic cylinder, an electric cylinder and other equipment.
  • the connection method of the body 210 on the fixed base 400 may be bolt connection, snap connection, riveting, pin connection, welding, etc.
  • the fixed base 400 refers to a structure that supports the power output of the driver 200 to the carrier 10 .
  • the fixed base 400 includes a base 410 and a frame 420 connected to the base 410.
  • the body 210 is fixed on the base 410, and the driving shaft 220 passes through the base 410 and is connected to the carrier 10.
  • the frame 420 is fixed.
  • Fixing the body 210 on the fixed base 400 facilitates the driving shaft 220 to output power to the bearing 10, ensuring that the movement of the bearing 10 is more stable.
  • the present application provides an airtight testing system.
  • the air tightness testing system includes: an air tightness tester 500 and an air tightness testing compression device as in any of the above solutions.
  • the air tightness tester 500 is used to obtain the pressure change value of the part to be tested 700 after inflation.
  • the air tightness tester 500 refers to an instrument that can determine whether leakage occurs inside the part to be tested 700 .
  • the above-mentioned airtight testing system adopts the above compression structure 20.
  • the component under test 700 will not be easily deformed due to the pressure difference between the inside and outside.
  • the pressing mechanism 100 can adaptively press on the parts to be tested 700 of different shapes, with high compatibility, and can effectively meet the testing pressure of different surface shapes. Urgent demand.
  • the airtight testing system further includes a bracket 600 .
  • the airtight testing compression device is installed on the bracket 600 .
  • the bracket 600 includes a support frame 620 and a plurality of columns 610, and the support frame 620 is erected on all the columns 610.
  • the airtight test compression device is fixed on the support frame 620 .
  • the air-tight test compression device is stably fixed through the bracket 600 to ensure that the air-tight test can be carried out stably.
  • the airtight testing system also includes a handling device 800 , and the handling device 800 is used to convey the piece to be tested 700 to below the airtight testing compression device.
  • the transport equipment 800 refers to equipment that can automatically transport the test piece 700, such as: equipped with optical and other automatic guidance devices (Automated Guided Vehicle, AGV for short), etc.
  • the transport equipment 800 is used to automatically transport the piece to be tested 700 below the air-tight testing compression device, which is beneficial to improving the automation of the air-tight testing system and improving testing efficiency.
  • This application provides an adaptive compression fixture for air tightness testing.
  • the air tightness testing process is that after the transportation equipment 800 arrives at the air tightness testing station, the air tightness test is installed. Closely test the pressing device, press the start button, the driver 200 descends, the pressing mechanism 100 and the piece to be tested 700 are fitted together, and then the test starts. During the pressing process, the entire adaptive pressing mechanism 100 moves downward under the action of the driver 200. The pressing surface 21 of the extruding part 23 contacts the surface of the piece to be tested 700, and the convex part of the piece to be tested 700 will push the extruded piece 700. The pressing part 23 is pushed upward, and the pressing part 23 is to be lowered.
  • the mating area 710 that reaches the height of the lowest point of the upper surface of the part to be tested 700 comes into contact, and the extruded part 23 is locked through the locking structure 30. At this time, the extruded part 23 achieves a profiling effect with the part to be tested 700.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

本申请涉及一种压紧机构、气密测试压紧装置及气密测试系统，在承载件上设置至少两个压紧结构，且压紧结构被构造为能在承载件上活动。在测试过程中，将各个压紧结构分别抵向待测件。若待测件的表面呈不规则或凹凸状等时，可通过活动压紧结构，改变各个压紧面与承载件之间的间距D，使得各个压紧面均能抵触在待测件的表面上。抵触后，利用锁定结构，将各个压紧结构进行锁定，使得各个压紧面之间所拼合形成的曲面更贴合待测件的表面，实现有效仿形，保证待测件的表面均能得到有效压紧。如此，在气密测试过程中，待测件不会因内外存在压力差而易导致结构变形。同时，其兼容性高，有效满足不同表面形状的测试中压紧需求。

Description

压紧机构、气密测试压紧装置及气密测试系统
交叉引用
本申请引用于2022年7月05日递交的名称为“压紧机构、气密测试压紧装置及气密测试系统”的第2022217153269号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及测试设备技术领域，特别是涉及压紧机构、气密测试压紧装置及气密测试系统。
背景技术
产品气密测试过程中，如电池包气密测试等，需对产品内部进行充气，产品外部进行压紧等操作，以便其内部能达到测试所需的内压。然而，受限于传统压紧工装结构结构设计缺陷，其兼容性差，无法满足不同表面形状的测试压紧需求。
发明内容
基于此，有必要提供一种压紧机构、气密测试压紧装置及气密测试系统，兼容性高，能有效满足不同表面形状的测试中压紧需求。
第一方面，本申请提供了一种压紧机构，包括：承载件；至少两个压紧结构，间隔设于承载件，各压紧结构均具有压紧面，压紧结构被构造为能在承载件上活动，以沿预设方向调节压紧面与承载件之间间距D；锁定结构，用于对各压紧结构的活动操作进行锁定。
上述的压紧机构，在承载件上设置至少两个压紧结构，且压紧结构被构造为能在承载件上活动。在测试过程中，将各个压紧结构分别抵向待测件。若待测件的表面呈不规则或凹凸状等时，可通过活动压紧结构，改变各个压紧面与承载件之间的间距D，使得各个压紧面均能抵触在待测件的表面上。抵触后，利用锁定结构，将各个压紧结构进行锁定，使得各个压紧面之间所拼合形成的曲面更贴合待测件的表面，实现有效仿形，保证待测件的表面均能得到有效压紧。如此，在气密测试过程中，待测件不会因内外存在压力差而易导致结构变形。同时，可通过解锁锁定结构，并调整各压紧结构，使得压紧机构能自适应压紧在不同形状的待测件上，兼容性高，有效满足不同表面形状的测试中压紧需求。
在一些实施例中，各压紧结构包括调节件及连接于调节件上的挤压件，压紧面设于挤压件背向承载件的一侧，调节件被构造为能在承载件上活动，锁定结构用于对调节件的活动操作进行锁定。如此，将压紧结构设计为调节件和挤压件，这样在压紧过程中，只需活动调节件即可使各压紧面抵触在待测件；抵触后，只需将锁定结构对调节件的活动进行锁定即可，有利于提升压紧操作的便利性。
在一些实施例中，调节件被构造为能在承载件上沿预设方向移动，锁定结构用于将调节件锁定在承载件上。如此，将调节件的活动方式设计为相对移动，使得压紧面与承载件之间间距的调节更为便利，有利于进一步提升待测件的测试效率。
在一些实施例中，承载件上设有与压紧结构对应的穿孔，调节件滑动穿设于穿孔中。如此，利用穿孔，使得调节件相对于承载件的相对移动顺畅，从而使得压紧面与承载件之间间距的调节更加便利，有利于提高气密测试效率。
在一些实施例中，待测件上具有与所述压紧面一一对应的配合区，各所述调节件的移动行程L大于处于最高位置的所述配合区与处于最低位置的所述配合区之间高度差h。如此，合理控制调节件的移动行程，保证所有的压紧面均能抵触在待测面上，实现有效仿形效果。
在一些实施例中，挤压件上设有第一导向部，承载件上设有第二导向部，第一导向部与第二导向部在预设方向上导向配合。如此，使得挤压件在预设方向上的调节更加顺畅，避免压紧结构在压紧过程中发生移动偏移而导致被卡住，有利于提高气密测试效率。
在一些实施例中，第一导向部为导向孔，第二导向部为穿设于导向孔的导向轴。如此设计，利用导向孔与导向轴配合，使得挤压件在承载件上的调节更为平顺，有利于提高气密测试效率。
在一些实施例中，导向孔内套设有直线轴承，导向轴穿设于直线轴承的内圈中。如此，有利于进一步提升导向轴在导向孔中滑动的平顺度。
在一些实施例中，第一导向部为至少两个，全部第一导向部绕调节件的外周间隔排布。如此，使得挤压件在调节间距时周向均得到有效导向，从而使得压紧面与承载件之间间距的调节更加顺畅，对待测件的仿形效果更好。
在一些实施例中，锁定结构包括至少两个锁定件，锁定件与压紧结构一一对应，锁定件用于将对应的压紧结构的活动操作进行锁定。如此，使得各压紧结构的锁定操作由独立对应的锁定件完成，这样使得各压紧操作具有独立性，方便测试压紧操作。
第二方面，本申请提供了一种气密测试压紧装置，包括：如以上任一项的压紧机构；驱动器，与承载件驱动连接，用于驱使承载件沿预设方向朝向或远离待测件运动。如 此，使得测试压紧过程中各压紧结构自适应调节，保证各个压紧面均能压紧在待测件上，实现有效仿形，提升气密测试效率。
在一些实施例中，气密测试压紧装置还包括感应器与控制器，待测件上具有与压紧面一一对应的配合区；其中，感应器被配置为：当承载件运动至其中一个压紧面与待测件上处于最低位置的配合区接触时，感应器向控制器发送触发信号，以控制驱动器停止工作。如此设计，利用感应器判断全部压紧面是否均抵触在待测件上，以便自动控制驱动器停止工作，使得气密测试过程自动化控制，提高测试效率。
在一些实施例中，气密测试压紧装置还包括设于承载件上的限位件，当承载件运动至其中一个压紧面与待测件上处于最低位置的配合区接触时，感应器与限位件感应配合。如此，利用限位件与感应器配合，能准确判断出各压紧面是否均抵触在待测件上，有利于提升对待测件的压紧效果。
在一些实施例中，气密测试压紧装置还包括固定座，驱动器包括本体及由本体驱使伸缩的驱动轴，本体装设于固定座，驱动轴与承载件连接。如此，便于驱动轴对承载件进行动力输出，保证承载件的移动更加稳定。
第三方面，本申请提供了一种气密测试系统，包括：如以上任一项的气密测试压紧装置；气密测试仪，用于获取充气后待测件的压力变化值。
上述气密测试系统，采用以上的压紧结构，在气密测试过程中，待测件不会因内外存在压力差而易导致结构变形。同时，可通过解锁锁定结构，并调整各压紧结构，使得压紧机构能自适应压紧在不同形状的待测件上，兼容性高，有效满足不同表面形状的测试中压紧需求。
在一些实施例中，气密测试系统还包括支架，气密测试压紧装置装设于支架上。如此，通过支架使得气密测试压紧装置得到稳定固定，保证气密测试稳定进行。
在一些实施例中，气密测试系统还包括搬运设备，搬运设备用于将待测件搬运至气密测试压紧装置的下方。如此，利用搬运设备将待测件自动搬运至气密测试压紧装置下方，有利于提升气密测试系统的自动化，提升测试效率。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传 统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为本申请一些实施例所述的压紧机构结构示意图；
图2为本申请一些实施例所述的压紧结构示意图；
图3为本申请一些实施例所述的压紧机构与搬运设备配合示意图；
图4为本申请一些实施例所述的气密测试压紧装置结构示意图；
图5为本申请一些实施例所述的气密测试系统结构示意图。
100、压紧机构；10、承载件；11、穿孔；12、第二导向部；121、导向孔；122、直线轴承；20、压紧结构；21、压紧面；22、调节件；23、挤压件；24、第一导向部；241、导向轴；242、限位部；30、锁定结构；31、锁定件；200、驱动器；210、本体；220、驱动轴；300、感应器；310、限位件；400、固定座；410、底座；420、框架；500、气密测试仪；600、支架；610、立柱；620、支撑架；700、待测件；710、配合区；800、搬运设备；X、预设方向。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
产品在流入市场或进入后段工序中，需对其进行性能测试，比如：气密性、绝缘性能等，而这些测试结果的可靠与否直接影响产品质量的稳定性，因此，如何提高测试结果的可靠性对于产品的品控尤为重要。
为便于理解，以电池包的气密测试为例进行说明，但需注意的是，不应以此解读对本申请保护范围的限定。在电池包气密测试过程中，需对电池包内进行充气，以判断电池包内是否会发生泄压现象。然而，充气过程中，会导致电池包发生鼓胀，导致结构发生变形，这样不仅导致电池包原结构被破坏，而且还影响气密测试结果。
为提高气密测试结果的可靠性，通常会采用与电池包的表面相匹配的压板，在充气过程中将压板压紧在电池包表面，使得电池包内外压力平衡，避免因结构变形而影响测试结果的可靠性。
然而，本申请人注意到，在气密测试过程中，电池包的表面形状因型号或规格的不同而呈现不同，导致测试过程中，需要配备多款与之相匹配的压板，这样导致气密测试压紧装置兼容性较差，无法有效满足不同表面形状的测试中压紧需求，从而导致气密测试效率下降。
为了解决气密测试压紧装置兼容性问题，本申请人经过深入研究，设计了一种压 紧机构。压紧结构被构造为能在承载件上活动，以沿预设方向调节压紧面与承载件之间间距D。同时，锁定结构能对各压紧结构的活动操作进行锁定。
在承载件上设置至少两个压紧结构，且压紧结构被构造为能在承载件上活动。在测试过程中，将各个压紧结构分别抵向待测件。若待测件的表面呈不规则或凹凸状等时，可通过活动压紧结构，改变各个压紧面与承载件之间的间距D，使得各个压紧面均能抵触在待测件的表面上。
抵触后，利用锁定结构，将各个压紧结构进行锁定，使得各个压紧面之间所拼合形成的曲面更贴合待测件的表面，实现有效仿形，保证待测件的表面均能得到有效压紧。如此，在气密测试过程中，待测件不会因内外存在压力差而易导致结构变形。同时，可通过解锁锁定结构，并调整各压紧结构，使得压紧机构能自适应压紧在不同形状的待测件上，兼容性高，有效满足不同表面形状的测试中压紧需求。
本申请提供的一种压紧机构可适用在任意需压紧操作的测试中，不仅限于电池包的气密测试过程中。
根据本申请的一些实施例，请参考图1，本申请提供了一种压紧机构100。压紧机构100包括：承载件10及至少两个压紧结构20。至少两个压紧结构20间隔设于承载件10。各压紧结构20均具有压紧面21，压紧结构20被构造为能在承载件10上活动，以沿预设方向X调节压紧面21与承载件10之间间距D。锁定结构30用于对各压紧结构20的活动操作进行锁定。
承载件10是指能供多个压紧结构20间隔安装的结构，其具有一定的结构刚度，以便在压紧待测件700过程中，对多个压紧结构20传递压力。承载件10的材质不作具体限定，只需满足压紧结构20能压紧待测件700均可。另外，为方便多个压紧结构20间隔排布，承载件10可设计为但不限于板状结构。其中，待测件700可为但不限于电池包等。
压紧结构20是指能在承载件10上活动，且能对待测件700施压的结构。压紧结构20在承载件10上活动的方式可为压紧结构20相对承载件10发生相对运动，也可为压紧结构20自身具有可活动功能，比如：压紧结构20为可伸缩的多节套杆、可伸缩的剪叉结构等。
压紧面21是指压紧结构20上与待测件700接触的一侧面，其可为平面，也可为曲面等。同时，为避免压紧面21与待测件700之间刚性接触而导致结构发生破损或凹陷，压紧面21上可设置柔性层，比如：橡胶层、布料层等。
锁定结构30是指能对压紧结构20的活动操作进行锁定的结构，例如：当各压紧结构20的压紧面21均抵触在待测件700上时，可通过锁定结构30锁定压紧结构20，使 之无法进行活动操作，此时压紧面21与承载件10之间的间距D无法被调节，即各个压紧面21贴合在待测件700的表面上。
锁定结构30锁定压紧结构20的活动操作，其实现方式可根据压紧结构20的活动类型而定，比如：当压紧结构20的活动是相对承载件10的活动时，如压紧结构20相对承载件10移动等，在锁定过程中，锁定结构30可将压紧结构20固定在承载件10上，使之无法相对活动，此时，锁定结构30可为但不限于销钉、螺母、抱紧装置、KP锁(标准件，具体结构可直接参考现有产品，在此不作赘述)等，当然，也可为电动装置，即当各压紧面21调节完成后，该锁定结构30自动触发锁定压紧结构20。当压紧结构20的活动是自身具有的活动时，锁定结构30则只需锁定压紧结构20的活动功能即可，比如：锁定压紧结构20中铰接处，使之无法进行转动伸缩等。
锁定结构30在锁定各压紧结构20时，可通过锁定结构30中同一部件同时锁定所有的压紧结构20的活动操作，也可通过锁定结构30中多个部件一一对应锁定压紧结构20的活动操作。
在气密测试过程中，待测件700不会因内外存在压力差而易导致结构变形。同时，可通过解锁锁定结构30，并调整各压紧结构20，使得压紧机构100能自适应压紧在不同形状的待测件700上，兼容性高，有效满足不同表面形状的测试中压紧需求。
根据本申请的一些实施例，请参考图2，各压紧结构20包括调节件22及连接于调节件22上的挤压件23。压紧面21设于挤压件23背向承载件10的一侧。调节件22被构造为能在承载件10上活动，锁定结构30用于对调节件22的活动操作进行锁定。
调节件22是指能在承载件10上活动操作，带动挤压件23活动，以改变压紧面21与承载件10之间间距的结构。调节件22在承载件10上的活动可为相对移动、相对伸缩运动等。
挤压件23是指与待测件700直接接触的部件，为使待测件700的表面能具有一定的压力，挤压件23需具有一定的刚度，避免在压紧待测件700时发生弯折。
调节件22与挤压件23之间的连接方式可为但不限于螺栓连接、螺纹套接、卡接、铆接、焊接、粘接、一体成型等。其中，一体成型可为压铸、注塑、挤出等工艺。
将压紧结构20设计为调节件22和挤压件23，这样在压紧过程中，只需活动调节件22即可使各压紧面21抵触在待测件700；抵触后，只需将锁定结构30对调节件22的活动进行锁定即可。如此，有利于提升压紧操作的便利性。
根据本申请的一些实施例，请参考图1与图2，调节件22被构造为能在承载件10上沿预设方向X移动。锁定结构30用于将调节件22锁定在承载件10上。
调节件22在承载件10上沿预设方向X移动，其实现方式可为：在承载件10上开孔，以使调节件22能上下滑动；或者，在承载件10上开内螺纹孔，调节件22上设置外螺纹，通过螺纹配合方式驱使调节件22相对承载件10移动等。
锁定结构30将调节件22锁定在承载件10上的方式有多种，比如：锁定结构30可设计成两个固定在承载件10上的夹片结构，当各压紧面21均抵触在待测件700上时，两个夹片结构会相互收合，以夹紧调节件22等。
将调节件22的活动方式设计为相对移动，使得压紧面21与承载件10之间间距的调节更为便利，有利于进一步提升待测件700的测试效率。
根据本申请的一些实施例，请参考图1，承载件10上设有与压紧结构20对应的穿孔11，调节件22滑动穿设于穿孔11中。
在压紧过程中，最先与待测件700接触的挤压件23会随着承载件10的下压继续，该挤压件23反作用调节件22，使之在穿孔11中相对承载件10发生移动，保证承载件10带着未与待测件700接触的挤压件23朝待测件700一侧继续移动，以使各个挤压件23依次抵触在待测件700上，完成各个压紧面21对待测件700表面的仿形。
穿孔11的数量应与压紧结构20的数量保持一致，即一个调节件22对应穿设于一个穿孔11中。而穿孔11的形状可与调节件22的横截面形状保持一致，也可不一致。当然，若穿孔11的形状与调节件22的横截面形状保持一致时，调节件22在穿孔11中的移动则更为顺畅。
另外，为避免调节件22从穿孔11中脱落，可在调节件22的一端设置限位部242，比如：该限位部242的横截面积或长度等尺寸大于穿孔11的对应尺寸等。
利用穿孔11，使得调节件22相对于承载件10的相对移动顺畅，从而使得压紧面21与承载件10之间间距的调节更加便利，有利于提高气密测试效率。
根据本申请的一些实施例，请参考图3，待测件700上具有与压紧面21一一对应的配合区710。各调节件22的移动行程L大于处于最高位置的配合区710与处于最低位置的配合区710之间高度差h。
调节件22的移动行程L是指调节件22在承载件10上所能移动的最大位移，比如：调节件22上移时，挤压件23与承载件10抵触，此时调节件22所移动的距离即为调节件22的移动行程L。处于最高位置的配合区710是指待测件700表面凸起最高的部位；处于最低位置的配合区710是指待测件700表面内凹最深的部位。
调节件22的在承载件10移动行程直接决定挤压件23与承载件10之间间距D的调节范围，比如：调节件22的移动行程L为150mm～450mm。若调节件22的移动行程小 于其中两个配合区710之间的高度差h时，会导致其中一个挤压件23与承载件10抵触后，另一个挤压件23还未与对应的配合区710接触，这样则无法保证所有的压紧面21均能抵触在待测面上，无法实现有效仿形效果。当然，为保证调节件22在承载件10上的移动行程，在实际制作时，可直接加长调节件22的长度即可。
合理控制调节件22的移动行程，保证所有的压紧面21均能抵触在待测面上，实现有效仿形效果。
根据本申请的一些实施例，请参考图1，挤压件23上设有第一导向部24。承载件10上设有第二导向部12。第一导向部24与第二导向部12在预设方向X上导向配合。
第一导向部24可为柱或杆状结构，第二导向部12为槽或孔状结构；或者第一导向部24可为槽或孔状结构，第二导向部12为柱或杆状结构。需注意的是，当第一导向部24为槽或孔状结构，第二导向部12为柱或杆状结构时，应避免第二导向部12在压紧过程中抵触在待测件700上而造成结构干涉，此时可将第一导向部24设置在挤压件23超出待测件700外的部分上。
利用第一导向部24与第二导向部12的导向配合，使得挤压件23在预设方向X上的调节更加顺畅，避免压紧结构20在压紧过程中发生移动偏移而导致被卡住，有利于提高气密测试效率。
根据本申请的一些实施例，请参考图1，第一导向部24为导向孔121。第二导向部12为穿设于导向孔121的导向轴241。
导向轴241的横截面形状应与导向孔121的形状保持一致，这样使得导向轴241在导向孔121中的移动更为平顺。同时，将第一导向部24设计成导向孔121，第二导向部12设计成导向轴241，这样在实现有效的导向作用时，导向轴241不会抵触在待测件700上而造成结构干涉。
如此设计，利用导向孔121与导向轴241配合，使得挤压件23在承载件10上的调节更为平顺，有利于提高气密测试效率。
根据本申请的一些实施例，请参考图2，导向孔121内套设有直线轴承122。导向轴241穿设于直线轴承122的内圈中。
直线轴承122是指直线运动系统，用于直线行程与圆柱轴配合使用。按照形状可分为直筒型、法兰型、开口型等。
在导向孔121内设置直线轴承122，有利于进一步提升导向轴241在导向孔121中滑动的平顺度。
根据本申请的一些实施例，请参考图2，第一导向部24为至少两个，全部第一导 向部24绕调节件22的外周间隔排布。
第一导向部24的数量可为两个、三个或者更多数量，至于具体数量可根据挤压件23的实际尺寸和设计要求而定，比如：第一导向部24为四个，其中两个第一导向部24位于调节件22的一侧，另外两个第一导向部24位于调节件22的另一侧等。
将全部第一导向部24绕调节件22的外周排布，使得挤压件23在调节间距时周向均得到有效导向，从而使得压紧面21与承载件10之间间距的调节更加顺畅，对待测件700的仿形效果更好。
根据本申请的一些实施例，请参考图1，锁定结构30包括至少两个锁定件31。锁定件31与压紧结构20一一对应，锁定件31用于将对应的压紧结构20的活动操作进行锁定。
锁定件31是指能对压紧结构20的活动操作进行锁定的结构，使得调节后各压紧面21与承载件10之间的间距D无法继续调节。锁定件31可为但不限于销钉、螺母、抱紧装置、KP锁等。
将锁定结构30设计成多个锁定件31，使得各压紧结构20的锁定操作由独立对应的锁定件31完成，这样使得各压紧操作具有独立性，方便测试压紧操作。
根据本申请的一些实施例，请参考图4，本申请提供了一种气密测试压紧装置。气密测试压紧装置包括：驱动器200与如以上任一方案中的压紧机构100。驱动器200与承载件10驱动连接，用于驱使承载件10沿预设方向X朝向或远离待测件700运动。
驱动器200是指能驱使压紧机构100沿预设方向X朝向或远离待测件700运动的设备，比如：可为气缸、液压缸、电缸等；当然，也可为电机和传动机构的组合结构，例如：电机、齿轮、齿条组合结构、电机、丝杆、滑块等组合结构等。
驱动器200驱使承载件10沿预设方向X运动，加之压紧面21与承载件10之间的间距D调节方向也为预设方向X，因此，在测试压紧过程中，驱动器200驱使承载件10沿预设方向X靠拢待测件700时，最先与待测件700的压紧结构20会自适应沿预设方向X调节，以便承载件10带动其余未与待测件700的压紧结构20依次抵触在待测件700上，全程均为自动调节，保证各个压紧面21均能压紧在待测件700上，实现有效仿形。
利用驱动器200驱使承载件10沿预设方向X移动，使得测试压紧过程中各压紧结构20自适应调节，保证各个压紧面21均能压紧在待测件700上，实现有效仿形，提升气密测试效率。
根据本申请的一些实施例，请参考图4，气密测试压紧装置还包括感应器300与控制器。待测件700上具有与压紧面21一一对应的配合区710。其中，感应器300被配置为： 当承载件10运动至其中一个压紧面21与待测件700上处于最低位置的配合区710接触时，感应器300向控制器发送触发信号，以控制驱动器200停止工作。
控制器是指具有处理、计算、执行等功能的设备，比如：可为但不限于可编辑的逻辑控制器、电子控制单元、单片机等。
感应器300是指接收信号或刺激并反应的器件，能将待测物理量或化学量转换成另一对应输出的装置，比如：红外传感器、压敏传感器等。感应器300与控制器电连接，能向控制器发送触发信号。
同时，控制器也可与锁定结构30电连接，即锁定结构30为电控设备，当控制器接收到触发信号时，控制驱动器200停止工作，锁定结构30启动工作，以锁定各压紧结构20。
其中一个压紧面21与处于最低位置上的配合区710接触，则说明全部的压紧面21均抵触在待测件700，即完成对待测件700的仿形操作。此时，感应器300被触发的实现方式可有多种，比如：在处于最低位置上的配合区710或对应的压紧面21上设置感应器300，如感应片等；或者，在承载件10上设置遮挡结构，若压紧面21与处于最低位置上的配合区710接触时，该遮挡结构会对感应器300造成遮挡等。
利用感应器300判断全部压紧面21是否均抵触在待测件700上，以便自动控制驱动器200停止工作，使得气密测试过程自动化控制，提高测试效率。
根据本申请的一些实施例，请参考图4，气密测试压紧装置还包括设于承载件10上的限位件310。当承载件10运动至其中一个压紧面21与待测件700上处于最低位置的配合区710接触时，感应器300与限位件310感应配合。
限位件310可设计成片状结构，也可设计成杆状结构等。当其中一个压紧面21与待测件700上处于最低位置的配合区710接触时，限位件310在承载件10的带动下，正好移动至感应器300的感应范围内，使得感应器300获取相应信号。
利用限位件310与感应器300配合，能准确判断出各压紧面21是否均抵触在待测件700上，有利于提升对待测件700的压紧效果。
根据本申请的一些实施例，请参考图4，气密测试压紧装置还包括固定座400。驱动器200包括本体210及由本体210驱使伸缩的驱动轴220。本体210装设于固定座400，驱动轴220与承载件10连接。
本体210是指驱动器200上能动力输出的部分，比如：气缸、液压缸、电缸等设备的缸体部分等。本体210在固定座400上的连接方式可为螺栓连接、卡接、铆接、销接、焊接等。
固定座400是指支撑驱动器200对承载件10动力输出的结构。固定座400的结构设计有多种，比如：固定座400包括底座410及连接于底座410上的框架420，本体210固定在底座410上，且驱动轴220贯穿底座410与承载件10连接。同时，在实际作业时，框架420被固定不动。
将本体210固定在固定座400上，便于驱动轴220对承载件10进行动力输出，保证承载件10的移动更加稳定。
根据本申请的一些实施例，请参考图5，本申请提供了一种气密测试系统。气密测试系统包括：气密测试仪500与如以上任一方案中的气密测试压紧装置。气密测试仪500用于获取充气后待测件700的压力变化值。
气密测试仪500是指能判断待测件700内部是否发生泄露的仪器。
上述气密测试系统，采用以上的压紧结构20，在气密测试过程中，待测件700不会因内外存在压力差而易导致结构变形。同时，可通过解锁锁定结构30，并调整各压紧结构20，使得压紧机构100能自适应压紧在不同形状的待测件700上，兼容性高，有效满足不同表面形状的测试中压紧需求。
根据本申请的一些实施例，请参考图5，气密测试系统还包括支架600。气密测试压紧装置装设于支架600上。
支架600的结构设计有多种，只需能满足气密测试压紧装置稳定固定均可，比如：支架600包括支撑架620及多个立柱610，支撑架620架设于全部立柱610上。气密测试压紧装置固定在支撑架620上。
通过支架600使得气密测试压紧装置得到稳定固定，保证气密测试稳定进行。
根据本申请的一些实施例，请参考图5，气密测试系统还包括搬运设备800，搬运设备800用于将待测件700搬运至气密测试压紧装置的下方。
搬运设备800是指能自动搬运待测件700的设备，比如：装有光学等自动导引装置(Automated Guided Vehicle，简称AGV)等。
利用搬运设备800将待测件700自动搬运至气密测试压紧装置下方，有利于提升气密测试系统的自动化，提升测试效率。
根据本申请的一些实施例，请参考图1至图5，本申请提供了一种气密测试自适应压紧治具，气密测试工序为搬运设备800到达气密测试工位后，安装好气密测试压紧装置，按下启动按钮，驱动器200下降，压紧机构100和待测件700贴合后开始测试。在压紧过程中，自适应压紧机构100整体在驱动器200作用下向下运动，挤压件23的压紧面21与待测件700表面接触，待测件700的凸起部分会把挤压件23向上顶起，待挤压件23下降 到达待测件700上表面最低点高度的配合区710接触，并通过锁定结构30将挤压件23锁定，此时挤压件23达到与待测件700的仿形效果。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (17)

  1. 一种压紧机构(100)，包括：
    承载件(10)；
    至少两个压紧结构(20)，间隔设于所述承载件(10)，各所述压紧结构(20)均具有压紧面(21)，所述压紧结构(20)被构造为能在所述承载件(10)上活动，以沿预设方向(X)调节所述压紧面(21)与所述承载件(10)之间间距D；
    锁定结构(30)，用于对各所述压紧结构(20)的活动操作进行锁定。
  2. 根据权利要求1所述的压紧机构(100)，其中，各所述压紧结构(20)包括调节件(22)及连接于所述调节件(22)上的挤压件(23)，所述压紧面(21)设于所述挤压件(23)背向所述承载件(10)的一侧，所述调节件(22)被构造为能在所述承载件(10)上活动，所述锁定结构(30)用于对所述调节件(22)的活动操作进行锁定。
  3. 根据权利要求2所述的压紧机构(100)，其中，所述调节件(22)被构造为能在所述承载件(10)上沿所述预设方向(X)移动，所述锁定结构(30)用于将所述调节件(22)锁定在所述承载件(10)上。
  4. 根据权利要求3所述的压紧机构(100)，其中，所述承载件(10)上设有与所述压紧结构(20)对应的穿孔(11)，所述调节件(22)滑动穿设于所述穿孔(11)中。
  5. 根据权利要求3或4所述的压紧机构(100)，其中，待测件(700)上具有与所述压紧面(21)一一对应的配合区(710)，各所述调节件(22)的移动行程L大于处于最高位置的所述配合区(710)与处于最低位置的所述配合区(710)之间高度差h。
  6. 根据权利要求3-5任一项所述的压紧机构(100)，其中，所述挤压件(23)上设有第一导向部(24)，所述承载件(10)上设有第二导向部(12)，所述第一导向部(24)与所述第二导向部(12)在所述预设方向(X)上导向配合。
  7. 根据权利要求6所述的压紧机构(100)，其中，所述第一导向部(24)为导向孔(121)，所述第二导向部(12)为穿设于所述导向孔(121)的导向轴(241)。
  8. 根据权利要求7所述的压紧机构(100)，其中，所述导向孔(121)内套设有直线轴承(122)，所述导向轴(241)穿设于所述直线轴承(122)的内圈中。
  9. 根据权利要求6-8任一项所述的压紧机构(100)，其中，所述第一导向部(24)为至少两个，全部所述第一导向部(24)绕所述调节件(22)的外周间隔排布。
  10. 根据权利要求1-9任一项所述的压紧机构(100)，其中，所述锁定结构(30)包括至少两个锁定件(31)，所述锁定件(31)与所述压紧结构(20)一一对应，所述锁定件(31)用于将 对应的所述压紧结构(20)的活动操作进行锁定。
  11. 一种气密测试压紧装置，包括：
    如权利要求1-10任一项所述的压紧机构(100)；
    驱动器(200)，与所述承载件(10)驱动连接，用于驱使所述承载件(10)沿所述预设方向(X)朝向或远离待测件(700)运动。
  12. 根据权利要求11所述的气密测试压紧装置，其中，所述气密测试压紧装置还包括感应器(300)与控制器，待测件(700)上具有与所述压紧面(21)一一对应的配合区(710)；
    其中，所述感应器(300)被配置为：当所述承载件(10)运动至其中一个所述压紧面(21)与所述待测件(700)上处于最低位置的所述配合区(710)接触时，所述感应器(300)向所述控制器发送触发信号，以控制所述驱动器(200)停止工作。
  13. 根据权利要求12所述的气密测试压紧装置，其中，所述气密测试压紧装置还包括设于所述承载件(10)上的限位件(310)，当所述承载件(10)运动至其中一个所述压紧面(21)与所述待测件(700)上处于最低位置的所述配合区(710)接触时，所述感应器(300)与所述限位件(310)感应配合。
  14. 根据权利要求11-13任一项所述的气密测试压紧装置，其中，所述气密测试压紧装置还包括固定座(400)，所述驱动器(200)包括本体(210)及由所述本体(210)驱使伸缩的驱动轴(220)，所述本体(210)装设于所述固定座(400)，所述驱动轴(220)与所述承载件(10)连接。
  15. 一种气密测试系统，包括：
    如权利要求11-14任一项所述的气密测试压紧装置；
    气密测试仪(500)，用于获取充气后所述待测件(700)的压力变化值。
  16. 根据权利要求15所述的气密测试系统，其中，所述气密测试系统还包括支架(600)，所述气密测试压紧装置装设于所述支架(600)上。
  17. 根据权利要求15或16所述的气密测试系统，其中，所述气密测试系统还包括搬运设备(800)，所述搬运设备(800)用于将所述待测件(700)搬运至所述气密测试压紧装置的下方。
PCT/CN2023/096426 2022-07-05 2023-05-26 压紧机构、气密测试压紧装置及气密测试系统 WO2024007761A1 (zh)

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