Detection clamp for air tightness detection equipment and air tightness detection equipment

Abstract

The utility model relates to the technical field of air tightness detection, and particularly discloses a detection clamp for air tightness detection equipment and the air tightness detection equipment, and the clamp comprises a second installation plate which is located under a first installation plate; a locking assembly; the sealing mechanism comprises a first sealing assembly, a second sealing assembly and a third sealing assembly; the first sealing assembly is fixed at the bottom of the first mounting plate, the second sealing assembly and the third sealing assembly are fixed at the top of the second mounting plate, the first sealing assembly can be matched with the second sealing assembly to seal through holes in the top surface and the bottom surface of a to-be-detected workpiece, and the third sealing assembly is used for sealing through holes in the side surface of the to-be-detected workpiece; the clamp can effectively solve the problems that when the specification of a workpiece is changed, all sealing assemblies integrally installed on a machine table need to be detached one by one, and all sealing assemblies suitable for a new workpiece need to be installed on the machine table of air tightness detection equipment one by one, so that labor intensity is large, and operation is tedious.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness detection, and particularly relates to a detection fixture used for air tightness detection equipment and the air tightness detection equipment. Background Art

[0002] After the production of the workpiece is completed, the prior art uses an airtightness detection device to perform an airtightness detection on the workpiece. When performing the airtightness detection on the workpiece, it is necessary to use a detection fixture to seal the through hole on the workpiece. The detection fixture includes a plurality of sealing components, and the detection fixture is directly integrated and installed on the machine platform of the airtightness detection device. Since the through holes set on workpieces of different specifications are different, that is, the detection fixture integrated and installed on the machine platform is only applicable to a specific workpiece, and when the specifications of the workpiece to be airtightly detected are changed, the prior art needs to remove all the sealing components integrated and installed on the machine platform one by one, and all the sealing components suitable for the new workpiece are installed one by one on the machine platform of the airtightness detection device. Therefore, the prior art has the problem of high labor intensity and cumbersome operation because when the specifications of the workpiece are changed, it is necessary to remove all the sealing components integrated and installed on the machine platform one by one, and all the sealing components suitable for the new workpiece are installed one by one on the machine platform of the airtightness detection device.

[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0004] The purpose of the present application is to provide a testing fixture and airtightness testing equipment for airtightness testing equipment, which can effectively solve the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing components integrated on the machine one by one when the specifications of the workpiece change, and install all sealing components suitable for the new workpiece one by one on the machine of the airtightness testing equipment.

[0005] In a first aspect, the present application provides a detection fixture for an airtightness detection device, which is applied in the airtightness detection device. The airtightness detection device is provided with a plurality of locking holes. The detection fixture for the airtightness detection device includes:

[0006] A first mounting plate is detachably fixed on the air tightness detection device;

[0007] A second mounting plate, located directly below the first mounting plate;

[0008] A locking assembly, which can cooperate with the locking hole to position and fix the second mounting plate on the air tightness detection device;

[0009] A sealing mechanism comprising a first sealing component, a second sealing component and a third sealing component;

[0010] The first sealing component is fixed to the bottom of the first mounting plate, the second sealing component and the third sealing component are both fixed to the top of the second mounting plate, the second sealing component is used to place the workpiece to be inspected, the first sealing component can cooperate with the second sealing component to seal the through holes located on the top and bottom surfaces of the workpiece to be inspected, and the third sealing component is used to seal the through holes located on the side surfaces of the workpiece to be inspected.

[0011] The present application provides a detection fixture for airtightness detection equipment, including a first mounting plate, a second mounting plate, a locking assembly and a sealing mechanism. Since the first sealing assembly is integratedly mounted on the first mounting plate, and the second sealing assembly and the third sealing assembly are integratedly mounted on the second mounting plate, when the specifications of the workpiece to be detected change, the present application only needs to replace the first mounting plate and the second mounting plate to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change.

[0012] Furthermore, a plurality of second through holes are arranged on the top surface of the workpiece to be inspected, and the first sealing assembly includes a plurality of sealing columns facing the second through holes.

[0013] Furthermore, a plurality of second through holes are arranged on the top surface of the workpiece to be inspected, and the first sealing assembly comprises a top surface sealing plate, which covers the top surface of the workpiece to be inspected and can press against all the second through holes.

[0014] Since the top surface sealing plate of the technical solution can press against all the second through holes, and when the second through holes are pressed, the second through holes will be sealed, the technical solution can seal all the second through holes at one time by making the top surface sealing plate contact with the workpiece to be inspected, that is, the present application does not need to configure a sealing column for each second through hole, thereby effectively reducing the production difficulty and production cost of the first sealing component.

[0015] Furthermore, the first sealing assembly also includes a plurality of clamping assemblies, the clamping assembly includes a first guide sleeve, a first guide rod and a first spring, the first guide rod is fixed on the top of the top sealing plate, the first guide sleeve is arranged outside the first guide rod and is fixedly connected to the first mounting plate, and the two ends of the first spring are respectively connected to the first guide sleeve and the first guide rod.

[0016] Since the clamping assembly includes a first guide sleeve, a first guide rod and a first spring, when the top sealing plate contacts the workpiece to be inspected, the first spring is compressed, and the elastic force provided by the first spring can offset the force applied by the air-tightness detection device to the first mounting plate. Therefore, this technical solution can avoid as much as possible the situation where the workpiece to be inspected is subjected to excessive force due to excessive force applied by the air-tightness detection device to the first mounting plate, thereby damaging the workpiece to be inspected.

[0017] Furthermore, a plurality of fourth through holes are arranged on the bottom surface of the workpiece to be inspected, and the second sealing assembly comprises a bottom sealing plate fixed on the second mounting plate, the bottom sealing plate covers the bottom surface of the workpiece to be inspected and can tighten all the fourth through holes.

[0018] Furthermore, a plurality of positioning blocks for limiting the placement position of the workpiece to be inspected are provided on the bottom sealing plate.

[0019] Since the bottom sealing plate of the technical solution is provided with a plurality of positioning blocks for limiting the placement position of the workpiece to be inspected, that is, the technical solution is equivalent to placing a plurality of workpieces to be inspected of the same specification at the expected positions by setting positioning blocks, the technical solution can effectively avoid the situation where the sealing mechanism cannot seal the through holes on the workpiece to be inspected due to the deviation between the actual placement position of the workpiece to be inspected and the expected position, thereby effectively avoiding the situation where the airtightness detection equipment cannot perform airtightness detection due to the inability to seal the through holes on the workpiece to be inspected.

[0020] Furthermore, a plurality of third through holes are arranged on the side of the workpiece to be inspected, and the third sealing assembly includes a driving assembly and a second sealing member, the driving assembly is mounted on the second mounting plate, the output end of the driving assembly is connected to the second sealing member, and the driving assembly is used to drive the second sealing member to move toward or away from the third through hole.

[0021] Furthermore, a plurality of handles are provided on the second mounting plate.

[0022] Since the second mounting plate of the technical solution is provided with several handles, the technical solution can adjust the position of the second mounting plate by pulling the handles, thereby effectively improving the convenience of moving the second mounting plate into or out of the air tightness detection equipment and adjusting the position of the second mounting plate on the air tightness detection equipment.

[0023] Furthermore, the first mounting plate has a plurality of positioning posts in a rectangular array, the second mounting plate is provided with a plurality of guide sleeves facing the positioning posts, and the positioning posts are fixed with limit nuts, which can interfere with the guide sleeves.

[0024] Since the air tightness detection equipment cannot drive the first mounting plate to continue moving toward the second mounting plate when the limit nut conflicts with the guide sleeve, this technical solution is equivalent to limiting the downward movement height of the first sealing assembly by providing a positioning column, a guide sleeve and a limit nut, thereby effectively avoiding the situation in which the first sealing assembly applies excessive force to the workpiece to be detected due to excessive downward movement height of the first sealing assembly, thereby damaging the workpiece to be detected.

[0025] In a second aspect, the utility model provides an airtightness detection device, which includes a detection fixture for an airtightness detection device as provided in the first aspect above.

[0026] The present application provides an airtightness testing device, comprising a first mounting plate, a second mounting plate, a locking assembly and a sealing mechanism. Since the first sealing assembly is integratedly mounted on the first mounting plate, and the second sealing assembly and the third sealing assembly are integratedly mounted on the second mounting plate, when the specifications of the workpiece to be tested change, the present application only needs to replace the first mounting plate and the second mounting plate to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change.

[0027] As can be seen from the above, the utility model provides a detection fixture for airtightness detection equipment and airtightness detection equipment, including a first mounting plate, a second mounting plate, a locking assembly and a sealing mechanism. Since the first sealing assembly is integratedly mounted on the first mounting plate, and the second sealing assembly and the third sealing assembly are integratedly mounted on the second mounting plate, when the specifications of the workpiece to be detected change, the present application only needs to replace the first mounting plate and the second mounting plate to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a testing fixture for airtightness testing equipment provided in the first embodiment of the present application when the through hole is not sealed.

[0029] Figure 2 A schematic structural diagram of a testing fixture for airtightness testing equipment used to seal a through hole provided in the first embodiment of the present application.

[0030] Figure 3 A schematic structural diagram of a testing fixture for airtightness testing equipment provided in the second embodiment of the present application when the through hole is not sealed.

[0031] Figure 4 A schematic structural diagram of a detection fixture for airtightness detection equipment used to seal a through hole provided in the second embodiment of the present application.

[0032] Figure 5 A schematic diagram of the structure of an airtightness detection device provided in an embodiment of the present application.

[0033] Explanation of reference numerals: 1. first mounting plate; 2. second mounting plate; 3. locking assembly; 4. sealing mechanism; 41. first sealing assembly; 411. sealing column; 4111. second guide sleeve; 4112. second guide rod; 4113. second spring; 412. top sealing plate; 413. clamping assembly; 4131. first guide sleeve; 4132. first guide rod; 4133. first spring; 42. second sealing assembly; 43. third sealing assembly; 431. driving assembly; 432. second sealing member; 5. positioning block; 6. handle; 7. positioning column; 8. guide sleeve; 9. limit nut; 10. proximity switch; 11. workpiece to be detected; 12. filling block. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0036] First, as Figure 1-Figure 4As shown, the present application provides a detection fixture for an airtightness detection device, which is applied in the airtightness detection device. The airtightness detection device is provided with a plurality of locking holes. The detection fixture for the airtightness detection device includes:

[0037] A first mounting plate 1 is detachably fixed on the air tightness detection device;

[0038] The second mounting plate 2 is located directly below the first mounting plate 1;

[0039] A locking assembly 3, which can cooperate with the locking hole to position and fix the second mounting plate 2 on the air tightness detection device;

[0040] The sealing mechanism 4 comprises a first sealing component 41, a second sealing component 42 and a third sealing component 43;

[0041] The first sealing component 41 is fixed to the bottom of the first mounting plate 1, the second sealing component 42 and the third sealing component 43 are both fixed to the top of the second mounting plate 2, the second sealing component 42 is used to place the workpiece to be inspected, the first sealing component 41 can cooperate with the second sealing component 42 to seal the through holes located on the top and bottom surfaces of the workpiece to be inspected 11, and the third sealing component 43 is used to seal the through holes located on the side of the workpiece to be inspected 11.

[0042] Among them, the air tightness detection device of this embodiment can be an existing air tightness detection device, and the air tightness detection device can perform air tightness detection on the workpiece 11 to be detected (the workpiece that needs to be air tightness detected, and the workpiece is preferably a car battery cooler), and a plurality of locking holes are provided on the air tightness detection device. The first mounting plate 1 of this embodiment can be a plate such as a steel plate or an aluminum alloy plate for mounting the first sealing component 41. The first mounting plate 1 of this embodiment can be detachably fixed on the air tightness detection device by means of screw locking or snap connection, and the air tightness detection device of this embodiment can drive the first mounting plate 1 to move toward or away from the second mounting plate 2. The structure of the second mounting plate 2 of this embodiment is preferably the same as that of the first mounting plate 1, and the second mounting plate 2 is located below the first mounting plate 1. The locking component 3 of this embodiment can be a component such as a cylinder or an oil cylinder that can cooperate with the locking hole to position and fix the second mounting plate 2 on the air tightness detection device. This embodiment can position and fix the second mounting plate 2 on the air tightness detection device by inserting the piston end of the cylinder or the oil cylinder into the locking hole. Preferably, the locking component 3 of this embodiment is a latch. The second mounting plate 2 of this embodiment is provided with a first through hole that can face the locking hole. After the latch is inserted into the locking hole through the first through hole, the latch contacts the side wall of the locking hole, that is, the horizontal position of the latch does not change. The side wall will interfere with the second mounting plate 2, so the horizontal position of the second mounting plate 2 will not change. Since the height of the second mounting plate 2 will not change when there is no vertical upward force, the second mounting plate 2 will not be subjected to a vertical upward force during the air-tightness test of the workpiece 11 to be tested, that is, the height of the second mounting plate 2 will not change during the air-tightness test of the workpiece 11 to be tested. Therefore, this embodiment can position and fix the second mounting plate 2 on the air-tightness test equipment by inserting the pin into the locking hole through the first through hole.The sealing mechanism 4 of this embodiment can be an existing detection fixture. The sealing mechanism 4 of this embodiment includes a first sealing component 41, a second sealing component 42 and a third sealing component 43. The first sealing component 41 is fixed to the bottom of the first mounting plate 1 (equivalent to integrating the first sealing component 41 on the first mounting plate 1), and the second sealing component 42 and the third sealing component 43 are both fixed to the top of the second mounting plate 2 (equivalent to integrating the second sealing component and the third sealing component 43 on the second mounting plate 2). Specifically, when the airtightness detection device drives the first mounting plate 1 to move toward the second mounting plate 2, the first sealing component 41 moves toward the second sealing component 42. When the first sealing component 41 moves toward the second sealing component 42, the first sealing component 41 can contact the through hole (the second through hole mentioned below) located on the top surface of the workpiece 11 to be detected, so as to seal the through hole located on the top surface of the workpiece 11 to be detected. Through hole, and when the first sealing component 41 contacts the through hole located on the top surface of the workpiece 11 to be detected, the workpiece 11 to be detected will be subjected to a vertical downward force, which can make the through hole located on the bottom surface of the workpiece 11 to be detected (the fourth through hole mentioned below) contact with the second sealing component 42 to seal the through hole located on the bottom surface of the workpiece 11 to be detected. Therefore, the first sealing component 41 of this embodiment can cooperate with the second sealing component 42 to seal the through holes located on the top and bottom surfaces of the workpiece 11 to be detected, and the third sealing component 43 is fixed on the top of the second mounting plate 2. The third sealing component 43 can seal the through hole located on the side of the workpiece 11 to be detected (the third through hole mentioned below). Specifically, this embodiment first seals the through holes located on the top and bottom surfaces of the workpiece 11 to be detected by cooperating with the first sealing component 41 and the second sealing component 42, and then uses the third sealing component 43 to seal the through hole located on the side of the workpiece 11 to be detected. It should be understood that, before positioning and fixing the second mounting plate 2 on the airtightness testing device, this embodiment can adjust the position of the second mounting plate 2 to move the second mounting plate 2 to be directly below the first mounting plate 1 .

[0043] The specific process of the air tightness testing device of this embodiment for performing air tightness testing can be: fixing the first mounting plate 1 on the air tightness testing device and placing the second mounting plate 2 directly below the first mounting plate 1; locking and fixing the second mounting plate 2 on the air tightness testing device by the cooperation of the locking component 3 and the locking hole; placing the workpiece 11 to be tested on the second sealing component 42, and controlling the air tightness testing device to drive the first mounting plate 1 to move toward the second mounting plate 2, so that the first sealing component 41 seals the through hole located at the top of the workpiece 11 to be tested and the second sealing component 42 seals the through hole located at the bottom of the workpiece 11 to be tested; controlling the third sealing component 43 to seal the through hole located on the side of the workpiece 11 to be tested; and controlling the air tightness testing device to perform an air tightness test on the workpiece 11 to be tested.

[0044] The present application provides a detection fixture for air-tightness detection equipment, including a first mounting plate 1, a second mounting plate 2, a locking assembly 3 and a sealing mechanism 4. Since the first sealing assembly 41 is integratedly mounted on the first mounting plate 1, and the second sealing assembly 42 and the third sealing assembly 43 are integratedly mounted on the second mounting plate 2, when the specifications of the workpiece 11 to be detected change, the present application only needs to replace the first mounting plate 1 and the second mounting plate 2 to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change.

[0045] In some embodiments, a plurality of second through holes are provided on the top surface of the workpiece 11 to be inspected, and the first sealing assembly 41 includes a plurality of sealing columns 411 facing the second through holes. Specifically, the sealing column 411 of this embodiment includes a second guide sleeve 4111, a second guide rod 4112, a second spring 4113 and a first sealing member, the second guide sleeve 4111 is fixedly connected to the first mounting plate 1, the second guide rod 4112 is sleeved in the second guide sleeve 4111, the two ends of the second spring 4113 are respectively connected to the second guide sleeve 4111 and the second guide rod 4112, and the first sealing member is fixed to an end of the second guide rod 4112 away from the first mounting plate 1. Since each sealing column 411 can only seal one second through hole, and the number of second through holes is multiple, the first sealing assembly 41 of this embodiment needs to include a plurality of sealing columns 411 facing the second through holes.

[0046] In some embodiments, the top surface of the workpiece 11 to be detected is provided with a plurality of second through holes, and the first sealing assembly 41 includes a top surface sealing plate 412, which covers the top surface of the workpiece 11 to be detected and can tighten all the second through holes. The first sealing assembly 41 of this embodiment includes a top surface sealing plate 412, the shape of which matches the shape of the top surface of the workpiece 11 to be detected, and the top surface sealing plate 412 is fixedly connected to the first mounting plate 1, so that the top surface sealing plate 412 covers the top surface of the workpiece 11 to be detected and can tighten all the second through holes. Since the top surface sealing plate 412 of this embodiment can tighten all the second through holes, and when the second through hole is tightened, the second through hole will be sealed, so this embodiment can seal all the second through holes at one time by making the top surface sealing plate 412 conflict with the workpiece 11 to be detected, that is, the present application does not need to configure a sealing column 411 for each second through hole, thereby effectively reducing the production difficulty and production cost of the first sealing assembly 41. Preferably, a filling block 12 that fits the workpiece 11 to be inspected is provided at the bottom of the top sealing plate 412 of this embodiment. The filling block 12 can interfere with the workpiece 11 to be inspected to prevent the workpiece 11 to be inspected from shifting during air tightness inspection.

[0047] In some embodiments, the first sealing assembly 41 also includes a plurality of clamping assemblies 413, the clamping assembly 413 includes a first guide sleeve 4131, a first guide rod 4132 and a first spring 4133, the first guide rod 4132 is fixed on the top of the top sealing plate 412, the first guide sleeve 4131 is sleeved outside the first guide rod 4132 and is fixedly connected to the first mounting plate 1, and the two ends of the first spring 4133 are respectively connected to the first guide sleeve 4131 and the first guide rod 4132. This embodiment is equivalent to setting a clamping assembly 413 between the first sealing assembly 41 and the first mounting plate 1. Since the clamping assembly 413 includes a first guide sleeve 4131, a first guide rod 4132 and a first spring 4133, when the top sealing plate 412 conflicts with the workpiece 11 to be detected, the first spring 4133 is compressed. The elastic force provided by the first spring 4133 can offset the force applied by the air-tightness detection equipment to the first mounting plate 1. Therefore, this embodiment can avoid as much as possible the situation where the workpiece 11 to be detected is subjected to excessive force due to excessive force applied by the air-tightness detection equipment to the first mounting plate 1, thereby damaging the workpiece 11 to be detected.

[0048] In some embodiments, a plurality of fourth through holes are provided on the bottom surface of the workpiece 11 to be inspected, and the second sealing assembly 42 includes a bottom sealing plate, which is fixed on the second mounting plate 2, and covers the bottom surface of the workpiece 11 to be inspected and can tighten all the fourth through holes. The second sealing assembly 42 of this embodiment includes a bottom sealing plate, the shape of which matches the shape of the bottom surface of the workpiece 11 to be inspected, and the bottom sealing plate is fixed on the second mounting plate 2. Preferably, an air inlet channel and an air inlet port are provided on the bottom sealing plate of this embodiment, and the air tightness detection device of this embodiment inputs the gas used for air tightness detection through the air inlet port and the air inlet channel.

[0049] In some embodiments, a plurality of third through holes are provided on the side of the workpiece 11 to be inspected, and the third sealing component 43 includes a driving component 431 and a second sealing member 432. The driving component 431 is mounted on the second mounting plate 2, and the output end of the driving component 431 is connected to the second sealing member 432. The driving component 431 is used to drive the second sealing member 432 to move toward or away from the third through hole. The driving component 431 of this embodiment can be a component such as an electric cylinder, a pneumatic cylinder or a hydraulic cylinder that can drive the second sealing member 432 to move toward or away from the third through hole. The second sealing member 432 of this embodiment can be a component such as a sealing head, a sealing strip or a sealing block that can improve air tightness. Specifically, after completing the air tightness test, this embodiment controls the driving component 431 to drive the second sealing member 432 to move away from the third through hole.

[0050] In some embodiments, a plurality of positioning blocks 5 for limiting the placement position of the workpiece 11 to be detected are provided on the bottom sealing plate. Since a plurality of positioning blocks 5 for limiting the placement position of the workpiece 11 to be detected are provided on the bottom sealing plate of this embodiment, that is, this embodiment is equivalent to placing a plurality of workpieces 11 to be detected of the same specification at the expected position by setting the positioning blocks 5, and thus this embodiment can effectively avoid the situation where the sealing mechanism 4 cannot seal the through hole on the workpiece 11 to be detected due to the deviation between the actual placement position and the expected position of the workpiece 11 to be detected, thereby effectively avoiding the situation where the airtightness detection device cannot perform airtightness detection due to the inability to seal the through hole on the workpiece 11 to be detected.

[0051] In some embodiments, the second mounting plate 2 is provided with a plurality of handles 6. Since the second mounting plate 2 of this embodiment is provided with a plurality of handles 6, the position of the second mounting plate 2 can be adjusted by pulling the handles 6, thereby effectively improving the convenience of moving the second mounting plate 2 into or out of the airtightness detection device and adjusting the position of the second mounting plate 2 on the airtightness detection device.

[0052] In some embodiments, a plurality of positioning posts 7 are arranged in a rectangular array on the first mounting plate 1, a plurality of guide sleeves 8 facing the positioning posts 7 are arranged on the second mounting plate 2, and a limiting nut 9 is fixed on the positioning post 7, and the limiting nut 9 can conflict with the guide sleeve 8. When the air tightness detection device drives the first mounting plate 1 to move toward the second mounting plate 2, the positioning posts 7 and the limiting nut 9 of this embodiment both move toward the guide sleeve 8. Since the air tightness detection device cannot drive the first mounting plate 1 to continue to move toward the second mounting plate 2 when the limiting nut 9 conflicts with the guide sleeve 8, this embodiment is equivalent to limiting the downward movement height of the first sealing component 41 by setting the positioning posts 7, the guide sleeve 8 and the limiting nut 9, thereby effectively avoiding the situation in which the first sealing component 41 applies too much force to the workpiece 11 to be detected due to the excessive downward movement height of the first sealing component 41, and the workpiece 11 to be detected is damaged.

[0053] In some embodiments, the bottom sealing plate is further provided with a proximity switch 10 for detecting whether the workpiece 11 to be detected is placed on the bottom sealing plate. The proximity switch 10 of this embodiment can be a device such as a photoelectric sensor or a photoelectric switch that can detect whether the workpiece 11 to be detected is placed on the bottom sealing plate. When it is detected that the workpiece 11 to be detected is placed on the bottom sealing plate, this embodiment sequentially controls the airtightness detection device to drive the first mounting plate 1 to move toward the second mounting plate 2, controls the third sealing component 43 to seal the third through hole, and controls the airtightness detection device to perform airtightness detection on the workpiece 11 to be detected.

[0054] As can be seen from the above, the present application provides a detection fixture for airtightness detection equipment, including a first mounting plate 1, a second mounting plate 2, a locking assembly 3 and a sealing mechanism 4. Since the first sealing assembly 41 is integratedly mounted on the first mounting plate 1, and the second sealing assembly 42 and the third sealing assembly 43 are integratedly mounted on the second mounting plate 2, when the specifications of the workpiece 11 to be detected change, the present application only needs to replace the first mounting plate 1 and the second mounting plate 2 to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change.

[0055] Second, as Figure 5 As shown, the utility model provides an airtightness detection device, which includes a detection fixture for airtightness detection equipment provided in the first aspect as described above.

[0056] An embodiment of the present application provides an airtightness testing device, which includes a testing fixture for an airtightness testing device as provided in the first aspect above. The working principle of the airtightness testing device of this embodiment is the same as the working principle of the testing fixture for an airtightness testing device provided in the first aspect above, and will not be discussed in detail here.

[0057] As can be seen from the above, the air tightness testing equipment provided by the present application includes a first mounting plate 1, a second mounting plate 2, a locking assembly 3 and a sealing mechanism 4. Since the first sealing assembly 41 is integratedly mounted on the first mounting plate 1, and the second sealing assembly 42 and the third sealing assembly 43 are integratedly mounted on the second mounting plate 2, when the specifications of the workpiece 11 to be tested change, the present application only needs to replace the first mounting plate 1 and the second mounting plate 2 to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change.

[0058] As can be seen from the above, the utility model provides a detection fixture for airtightness detection equipment and airtightness detection equipment, including a first mounting plate 1, a second mounting plate 2, a locking assembly 3 and a sealing mechanism 4. Since the first sealing assembly 41 is integratedly mounted on the first mounting plate 1, and the second sealing assembly 42 and the third sealing assembly 43 are integratedly mounted on the second mounting plate 2, when the specifications of the workpiece 11 to be detected change, the present application only needs to replace the first mounting plate 1 and the second mounting plate 2 to complete the replacement of all sealing assemblies, that is, the present application is equivalent to not having to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one, thereby effectively solving the problem of high labor intensity and cumbersome operation caused by the need to remove all sealing assemblies integrated on the machine one by one and install all sealing assemblies suitable for the new workpiece on the machine one by one when the specifications of the workpiece change.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A detection fixture for airtightness detection equipment, characterized in that: Applied in an airtightness detection device, the airtightness detection device is provided with a plurality of locking holes, and the detection fixture for the airtightness detection device comprises: A first mounting plate, detachably fixed to the air tightness detection device; a second mounting plate, located directly below the first mounting plate; A locking assembly, which can cooperate with the locking hole to position and fix the second mounting plate on the air tightness detection device; A sealing mechanism comprising a first sealing component, a second sealing component and a third sealing component; The first sealing assembly is fixed at the bottom of the first mounting plate, the second sealing assembly and the third sealing assembly are both fixed at the top of the second mounting plate, the second sealing assembly is used to place the workpiece to be inspected, the first sealing assembly can cooperate with the second sealing assembly to seal the through holes located on the top and bottom surfaces of the workpiece to be inspected, and the third sealing assembly is used to seal the through holes located on the side surfaces of the workpiece to be inspected.

2. The detection fixture for airtightness detection equipment according to claim 1, characterized in that: The top surface of the workpiece to be inspected is provided with a plurality of second through holes, and the first sealing assembly includes a plurality of sealing columns facing the second through holes.

3. The detection fixture for airtightness detection equipment according to claim 1, characterized in that: The top surface of the workpiece to be inspected is provided with a plurality of second through holes, and the first sealing assembly comprises a top surface sealing plate, which covers the top surface of the workpiece to be inspected and can press against all the second through holes.

4. The detection fixture for airtightness detection equipment according to claim 3, characterized in that: The first sealing assembly also includes a plurality of clamping assemblies, and the clamping assembly includes a first guide sleeve, a first guide rod and a first spring. The first guide rod is fixed on the top of the top sealing plate, the first guide sleeve is arranged outside the first guide rod and is fixedly connected to the first mounting plate, and the two ends of the first spring are respectively connected to the first guide sleeve and the first guide rod.

5. The detection fixture for airtightness detection equipment according to claim 1, characterized in that: The bottom surface of the workpiece to be inspected is provided with a plurality of fourth through holes, and the second sealing assembly comprises a bottom sealing plate fixed on the second mounting plate, the bottom sealing plate covers the bottom surface of the workpiece to be inspected and can tighten all the fourth through holes.

6. The detection fixture for airtightness detection equipment according to claim 5, characterized in that: The bottom sealing plate is provided with a plurality of positioning blocks for limiting the placement position of the workpiece to be detected.

7. The detection fixture for airtightness detection equipment according to claim 1, characterized in that: A plurality of third through holes are arranged on the side of the workpiece to be inspected, and the third sealing assembly includes a driving assembly and a second sealing member. The driving assembly is mounted on the second mounting plate, and the output end of the driving assembly is connected to the second sealing member. The driving assembly is used to drive the second sealing member to move toward or away from the third through hole.

8. The detection fixture for airtightness detection equipment according to claim 1, characterized in that: The second mounting plate is provided with a plurality of handles.

9. The detection fixture for airtightness detection equipment according to claim 1, characterized in that: The first mounting plate is provided with a plurality of positioning posts in a rectangular array, the second mounting plate is provided with a plurality of guide sleeves facing the positioning posts, and the positioning posts are fixed with limit nuts, which can interfere with the guide sleeves.

10. An airtightness detection device, characterized in that: The airtightness testing device comprises a testing fixture for airtightness testing device as described in any one of claims 1-9.

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