Plugging tool and airtightness detection equipment

Abstract

The utility model discloses a plugging tool and air tightness detection equipment, and belongs to the technical field of air tightness detection.The plugging tool comprises a magnetic assembly, and a sealing cavity is formed in one side of the magnetic assembly; the sealing piece is arranged on the magnetic assembly and surrounds the periphery of the sealing cavity; the device is attracted to the to-be-tested workpiece through the magnetic force of the magnetic assembly, meanwhile, the hole structure in the to-be-tested workpiece is located in the sealing cavity, the sealing pieces are extruded by the magnetic assembly and the to-be-tested workpiece to block the gap between the sealing pieces, and therefore plugging of the hole structure is achieved; after detection is finished, only the magnetic assembly needs to be removed, use is convenient and fast, due to the fact that the magnetic force is relatively stable, the magnetic assembly does not need to be replaced frequently, time is saved, and then the plugging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air tightness detection, and particularly relates to a plugging tool and an air tightness detection device. BACKGROUND

[0002] At present, when a product is subjected to air tightness detection, a hole structure may exist on the product and affect the sealing of the product, so that the hole structure part needs to be plugged. The existing plugging method is usually to use adhesive tape for pasting, which is not convenient to operate and has low air tightness detection reliability. CONTENT OF THE UTILITY MODEL

[0003] The application provides a plugging tool, which aims to solve the technical problem that the air tightness detection of the product is not convenient and has low reliability. Another object of the application is to provide an air tightness detection device.

[0004] TECHNICAL SCHEME: The plugging tool provided by the application comprises:

[0005] A magnetic assembly is used for being adsorbed on a workpiece to be detected, and one side of the magnetic assembly is provided with a sealing cavity.

[0006] A sealing member is arranged on the magnetic assembly and arranged around the periphery of the sealing cavity.

[0007] In some embodiments, the magnetic assembly comprises a magnetic base and an air tight base, the magnetic base is fixed to the air tight base, the sealing cavity is arranged on the side of the air tight base away from the magnetic base, and the sealing member is fixed to the air tight base.

[0008] In some embodiments, the magnetic assembly comprises a magnetic base and an air tight base, the number of the magnetic bases is multiple, and the magnetic bases are fixed to the outer peripheral wall of the air tight base, the sealing cavity is arranged on the air tight base, the opening of the sealing cavity and the magnetic attraction surface of the magnetic base are arranged on the same side of the air tight base, and the sealing member is fixed to the air tight base.

[0009] In some embodiments, the air tight base is provided with a sealing groove on the side facing the sealing member, and at least part of the sealing member is arranged in the sealing groove.

[0010] In some embodiments, the sealing member is bonded to the air tight base.

[0011] In some embodiments, the plugging tool further comprises a fastener, the air tight base is provided with a through hole, the fastener passes through the through hole and is connected with the magnetic base.

[0012] In some embodiments, the fastener is sealingly connected with the hole wall of the through hole.

[0013] In some embodiments, the inner periphery of the sealing member is spaced apart from the outer periphery of the sealing cavity.

[0014] In some embodiments, the material of the air-tight base is a magnetic conductive material.

[0015] Correspondingly, the air-tight detection device provided by the embodiments of the present application comprises the sealing tool.

[0016] Beneficial effects: the sealing tool of the embodiments of the present application is adsorbed on the workpiece to be detected by the magnetic force of the magnetic assembly, and at the same time, the hole structure on the workpiece to be detected is located in the sealing cavity. The gap between the sealing member and the workpiece to be detected is blocked by the extrusion of the magnetic assembly and the workpiece to be detected, so that the sealing of the hole structure is realized. After the detection is completed, the magnetic assembly only needs to be removed, which is convenient and fast to use. Since the magnetic force is relatively stable, the magnetic assembly does not need to be replaced frequently, which is beneficial to save time and improve the efficiency of sealing. At the same time, the stable magnetic force can make the sealing member bear force uniformly, maintain the stable sealing of the sealing cavity, and further ensure the reliability of the air-tight detection.

[0017] The air-tight detection device of the embodiments of the present application comprises the sealing tool described above, and therefore can have all the technical features and beneficial effects of the sealing tool described above. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structural schematic diagram of the sealing tool provided by the embodiments of the present application is shown in the figure;

[0020] Figure 2 The structural schematic diagram of the sealing member provided by the embodiments of the present application is shown in the figure;

[0021] Figure 3 The exploded schematic diagram of the sealing tool provided by the embodiments of the present application is shown in the figure;

[0022] Figure 4 Another structural schematic diagram of the magnetic seat and the air-tight base provided by the embodiments of the present application is shown in the figure;

[0023] Figure 5 The sectional view of the sealing tool provided by the embodiments of the present application is shown in the figure;

[0024] Reference signs: 1, magnetic force assembly; 11, magnetic force seat; 12, airtight base; 121, sealing groove; 122, through hole; 2, sealing element; 21, sealing cavity; 3, fastener. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be understood that the terms "height", "thickness", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, at least one of which can be one, two or more, unless otherwise explicitly specified.

[0027] As a prologue of the embodiments of the present application, when the current product is subjected to airtightness detection, there may be a hole structure on the product that affects the sealing of the product, so it is necessary to plug the hole structure part before airtightness detection. The existing plugging method is usually to use adhesive tape to paste to block the hole, which requires repeated replacement of the adhesive tape, and the adhesion of the adhesive tape also affects the plugging effect, and too strong adhesion will make it inconvenient to tear off the adhesive tape. Various factors will reduce the efficiency of plugging.

[0028] Please combine Figure 1 and Figure 2 The plugging tool of the embodiments of the present application includes a magnetic force assembly 1 and a sealing element 2. The magnetic force assembly 1 is used to be adsorbed on a workpiece to be tested, that is, the workpiece to be tested can react to a magnetic field, which is a ferromagnetic material, such as iron, cobalt, nickel and their alloys. One side of the magnetic force assembly 1 is provided with a sealing cavity 21, and the sealing element 2 is arranged on the magnetic force assembly 1 and surrounds the periphery of the sealing cavity 21.

[0029] In the embodiments of the present application, the sealing element 2 is a sealing ring, which is annular in structure and has a certain elasticity. The material of the sealing element 2 can be one of nitrile rubber, polytetrafluoroethylene and polyurethane.

[0030] When detecting, the magnetic force assembly 1 is adsorbed on the surface of the workpiece to be detected by the magnetic force of the magnetic force assembly 1, and the hole structure is located in the sealed cavity 21, the sealing element 2 is sealed under pressure, so that the inside of the sealed cavity 21 is isolated from the external environment, the plugging of the hole structure is realized, the magnetic force assembly 1 is removed after detection, which is convenient and fast, and is beneficial to improve the plugging efficiency. In addition, since the magnetic force assembly 1 is magnetically adsorbed, the surface of the workpiece to be detected can be kept clean after removal.

[0031] In other embodiments, the sealing element 2 can also be arranged in a B shape or an 8 shape, and at this time, the sealed cavity 21 can be designed as two, and a plurality of hole structures can be plugged at the same time.

[0032] Please combine Figure 1 and Figure 2 In some embodiments, the magnetic force assembly 1 includes a magnetic seat 11 and an airtight base 12, the magnetic seat 11 is connected to the airtight base 12, the sealed cavity 21 is arranged on the side of the airtight base 12 away from the magnetic seat 11, and the sealing element 2 is fixed to the airtight base 12, that is, the sealing element 2 is fixed to the side of the airtight base 12 away from the magnetic seat 11. The magnetic force of the magnetic seat 11 to the workpiece to be detected, the airtight base 12 is pressed on the workpiece to be detected, the magnetic seat 11 and the airtight base 12 are in surface contact, and the airtight base 12 and the sealing element 2 are located in the magnetic force direction of the magnetic seat 11, which can increase the uniformity of the force of the airtight base 12, so that the airtight base 12 uniformly applies pressure to the sealing element 2, so that the sealing element 2 is fully attached to the surface of the workpiece to be detected, thereby improving the sealing effect.

[0033] The connection between the magnetic seat 11 and the airtight base 12 can be detachable connection, or welding or gluing, or abutting, that is, the magnetic seat 11 and the airtight base 12 are independent of each other, and the magnetic seat 11 and the airtight base 12 in this way have greater flexibility.

[0034] Please refer to Figure 4In some embodiments, the magnetic force assembly 1 comprises a plurality of magnetic force bases 11 and a gas-tight base 12. The plurality of magnetic force bases 11 are arranged along the outer periphery of the gas-tight base 12 and fixed to the outer peripheral wall of the gas-tight base 12. The sealing cavity 21 is arranged in the gas-tight base 12, and the opening of the sealing cavity 21 and the magnetic attraction surface of the magnetic force base 11 are arranged on the same side of the gas-tight base 12. The sealing member 2 is fixed to the side of the gas-tight base 12 where the sealing cavity 21 is arranged. The sealing cavity 21 and the magnetic force base 11 are arranged on different sides of the gas-tight base 12. The magnetic attraction surface of the magnetic force base 11 is the surface of the magnetic force base 11 that contacts the workpiece when the magnetic force base 11 is attracted to the workpiece. Therefore, it can also be understood that the opening of the sealing cavity 21 and the magnetic attraction surface of the magnetic force base 11 are arranged to face the workpiece. At this time, the magnetic force base 11 is attracted to the workpiece, and the gas-tight base 12 presses the sealing member 2 against the surface of the workpiece. The plurality of magnetic force bases 11 are arranged to ensure the magnetic attraction force between the magnetic force bases 11 and the workpiece, and to maintain the uniformity of the pressure applied to the sealing member 2.

[0035] In some embodiments, the magnetic force assembly 1 comprises a plurality of magnetic force bases 11 and a sealing member 2. The sealing member 2 and the sealing cavity 21 are arranged on the side of the magnetic force base 11 that faces the workpiece. When the magnetic force base 11 is attracted to the workpiece, the sealing member 2 is directly pressed tightly.

[0036] For a better understanding of the present application, reference will be made to the following drawings: Figure 5 In some embodiments, the magnetic force base 11 has a magnetic attraction state and a demagnetization state. In the magnetic attraction state, the magnetic force base 11 can generate a magnetic attraction force on the workpiece. In the demagnetization state, the magnetic force base 11 has no magnetic force. By adjusting the two states of the magnetic force base 11, the magnetic force base 11 can be quickly disassembled and assembled, and the plugging efficiency can be further improved. Specifically, the shell of the magnetic force base 11 is composed of two soft irons separated by a non-magnetic copper plate. A cavity is formed between the two soft irons, and a rotatable magnet is arranged in the cavity. The magnet is divided into N and S poles along the diameter direction. When the magnet is rotated to positions corresponding to the two copper plates, respectively, the magnetic lines form closed circuits in the two soft irons, respectively. At this time, the magnetic force base 11 is demagnetized, and it can be easily removed from the workpiece. When the magnet is rotated to positions facing the two soft irons, respectively, the soft irons are magnetized and can be attached to the workpiece. In other embodiments, the magnetic force base 11 can also be replaced by a permanent magnet.

[0037] For a better understanding of the present application, reference will be made to the following drawings: Figure 2 and Figure 3In some embodiments, the airtight base 12 is provided with a sealing groove 121 on the side facing the sealing member 2, the sealing groove 121 extends along the outer contour of the sealing member 2, and at least part of the sealing member 2 is arranged in the sealing groove 121. The fitting of the sealing member 2 and the sealing groove 121 can increase the contact area between the sealing member 2 and the base, thereby improving the sealing performance, and can also limit the relative displacement of the sealing member 2, thereby maintaining the stable fitting of the sealing member 2 and the workpiece to be measured.

[0038] Please combine Figure 2 and Figure 3 In some embodiments, the sealing member 2 is bonded to the airtight base 12. The sealing member 2 can be bonded to the airtight base 12 by means of self-adhesive or glue, and the connection method is simple. When the sealing member 2 needs to be replaced, the sealing member 2 can also be removed by heating, solvent degreasing and other methods to maintain the sealing effect of the sealing member 2.

[0039] Please combine Figure 2 and Figure 3 In some embodiments, the sealing tool further comprises a fastener 3, and the airtight base 12 is provided with a through hole 122, and the fastener 3 passes through the through hole 122 and is connected with the magnetic base 11. The fastener 3 fixes the airtight base 12 and the magnetic base 11, which facilitates integrated operation, and also maintains the same position of the applied force on the sealing member 2 when adsorbed on the workpiece to be measured each time, so that the sealing effect is homogenized. The through hole 122 can position the fastener 3, facilitating the connection of the fastener 3.

[0040] The fastener 3 can be one of a screw, a pin, a bolt, and an elastic cylindrical pin. In an exemplary embodiment of the present application, the fastener 3 is a screw, which passes through the through hole 122 and is threadedly connected with the magnetic base 11.

[0041] Please combine Figure 2 and Figure 3 In some embodiments, the fastener 3 is sealingly connected with the hole wall of the through hole 122. The sealing connection can be filled with sealant to block the gap between the screw and the through hole 122. The sealant can be selected from silicone sealant, polyurethane sealant, acrylic sealant, or polytetrafluoroethylene sealant. In addition, the sealing connection can also be achieved by providing an internal thread on the inner wall of the through hole 122, and utilizing the close engagement between the external thread and the internal thread to block the gap between them. The sealing connection can ensure the airtightness of the airtight base 12 at the position of the through hole 122, especially when the magnetic base 11 and the sealing member 2 are arranged relative to the airtight base 12, which can reduce the possibility of leakage of the sealing cavity 21 at the through hole 122.

[0042] Please combine Figure 2 and Figure 3In some embodiments, the inner periphery of the sealing member 2 is spaced apart from the outer periphery of the sealing cavity 21, and the sealing member 2 has a ring structure, and the inner periphery of the sealing member 2 can be understood as an inner wall or an inner ring of the sealing member 2, and the outer periphery of the sealing cavity 21 is an outer edge of an opening of the sealing cavity 21. By spacing the sealing member 2 from the sealing cavity 21, the sealing property of the area surrounded by the sealing member 2 when in contact with the workpiece to be tested can be ensured. In a first direction, the sealing cavity 21 is recessed towards the magnetic base 11, and the depth of the sealing cavity 21 is not less than one half of the thickness of the airtight base 12, and the first direction is the thickness direction of the airtight base 12. The recessed depth of the sealing cavity 21 can enable the workpiece to be tested to be accommodated in the sealing cavity 21 at a protruding position of the hole structure or the periphery of the hole structure, so as to avoid interference with the airtight base 12, and facilitate increasing the adaptability of the plugging tool to different working conditions.

[0043] The shape of the sealing cavity 21 can be set to be matched with the shape of the protruding part on the workpiece to be tested, so that the protruding part can also play a positioning role on the airtight base 12 when being inserted into the sealing cavity 21.

[0044] In the case that the magnetic base 11 and the sealing member 2 are arranged relative to the airtight base 12, the sealing cavity 21 is in communication with the through hole 122, and the sealing connection of the fastener 3 and the through hole 122 helps to ensure the airtightness of the entire chamber.

[0045] In some embodiments, the airtight base 12 is made of a magnetic conductive material, such as iron, cobalt, nickel, and steel. The airtight base 12 made of the magnetic conductive material can attract and guide the magnetic field, thereby enhancing the magnetic attraction force of the magnetic base 11 on the workpiece to be tested.

[0046] Correspondingly, the airtight detection device provided by the embodiments of the present application includes the plugging tool of the above-mentioned embodiments, and the plugging tool is used for being adsorbed on the workpiece to be tested. The airtight detection device can have all the technical features and beneficial effects of the above-mentioned plugging tool, and details are not repeated here.

[0047] In the above-mentioned embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0048] The plugging tool and the airtight detection device provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions of the present application and the core ideas thereof; those skilled in the art should understand that the technical solutions recorded in the above-mentioned embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A plugging tool, characterized in that, The application relates to a sealing tool for a workpiece. The sealing tool comprises a magnetic assembly (1) provided with a sealed cavity (21) on one side; and a sealing member (2) arranged on the magnetic assembly (1) and surrounding the periphery of the sealed cavity (21). The magnetic assembly (1) comprises a magnetic base (11) and an air-tight base (12), the magnetic base (11) is fixed to the air-tight base (12), the sealed cavity (21) is arranged on the side of the air-tight base (12) away from the magnetic base (11), and the sealing member (2) is fixed to the air-tight base (12).

2. The blocking tool according to claim 1, characterized in that, The magnetic assembly (1) comprises a magnetic base (11) and an air-tight base (12), a plurality of magnetic bases (11) are arranged on the outer peripheral wall of the air-tight base (12), the sealed cavity (21) is arranged on the air-tight base (12), the opening of the sealed cavity (21) and the magnetic attraction surface of the magnetic base (11) are arranged on the same side of the air-tight base (12), and the sealing member (2) is fixed to the air-tight base (12).

3. The blocking tool according to claim 1, wherein The air-tight base (12) is provided with a sealing groove (121) on the side facing the sealing member (2), and at least part of the sealing member (2) is arranged in the sealing groove (121).

4. The plugging tool according to claim 2 or 3, characterized in that The sealing member (2) is bonded to the air-tight base (12).

5. The sealing tool according to claim 4, characterized in that The sealing tool further comprises a fastener (3), the air-tight base (12) is provided with a through hole (122), the fastener (3) passes through the through hole (122) and is connected with the magnetic base (11).

6. The sealing tool according to claim 2 or 3, characterized in that The fastener (3) is sealingly connected with the hole wall of the through hole (122).

7. The blocking tool according to claim 6, characterized in that The inner periphery of the sealing member (2) is arranged at intervals along the outer periphery of the sealed cavity (21).

8. The sealing tool according to claim 2 or 3, characterized in that The material of the air-tight base (12) is a magnetic conductive material.

9. The blocking tool according to claim 2 or 3, characterized in that The application further discloses a sealing tool for adsorbing on a workpiece to be measured.

10. A leak detection apparatus, characterized by, ​

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