Airtightness detection device for copper bar injection molding part

Abstract

The utility model provides an air tightness detection device for a copper bar injection molding part, and the device comprises a fixed plate, the fixed plate is provided with a sealing part, the sealing part is provided with two sealing cavities matched with a sealing detection part of the copper bar injection molding part, the interiors of the two sealing cavities are communicated, and one side of the sealing part is provided with an air source device communicated with the sealing cavities; the method has the advantages of being high in detection efficiency, more sensitive to tiny leakage, wider in application range, capable of achieving quantitative detection, low in use cost, operation cost and maintenance cost, easy to operate, low in environment requirement and the like.

Description

Technical Field

[0001] The present application relates to the technical field of sealing detection tooling, and in particular to an airtightness detection device for copper busbar injection moldings. Background Art

[0002] Copper busbar injection molding is commonly found in electrical equipment, electronic devices and other fields, and plays an important role in circuit connection and layout. Copper busbar injection molding is a component formed by combining copper busbar and injection molding material through a specific process. The injection molding material is wrapped around part of the copper busbar or the entire copper busbar to play the role of insulation, fixation and protection. This combination not only utilizes the good conductivity of the copper busbar, but also gives it a specific shape, protective performance or structural features for connection and assembly with other parts through the injection molding part.

[0003] The sealing of copper busbar injection molded parts needs to be tested before leaving the factory, because the sealing plays an important role in preventing leakage, ensuring insulation performance, resisting harsh environment, and maintaining stable performance. The discussion is as follows:

[0004] 1. Prevent leakage: Good sealing can prevent moisture, dust, etc. from entering, prevent the copper busbar from having poor contact with the external environment, resulting in electrical faults such as leakage, and ensure the safe and stable operation of the electrical system;

[0005] 2. Ensure insulation performance: Poor sealing may reduce insulation performance, affect the overall electrical insulation effect, and threaten the safety of equipment and personnel;

[0006] 3. Resistant to harsh environment: It can ensure that the copper busbar injection molding can maintain normal functions and extend its service life under various harsh conditions, such as humid and dusty environments;

[0007] 4. Maintain stable performance: Poor sealing may introduce external interference factors, affecting the performance stability and reliability of the system in which the copper busbar injection molding participates.

[0008] Commonly used detection methods in the prior art include bubble detection method, helium mass spectrometry leak detection method, etc.; the bubble detection method is to immerse the injection molded part in liquid, apply pressure and observe whether bubbles emerge, and the presence of bubbles indicates that there is a poor seal. This method may be affected by the viscosity and surface tension of the liquid, which may affect the formation and observation of bubbles, resulting in misjudgment and low detection effect; the helium mass spectrometry leak detection method uses helium as a tracer gas and uses a special leak detector to detect whether there is a helium leak. This method is very sensitive and can detect extremely small leaks, but this detection method has the characteristics of high equipment cost, high requirements for the operating environment, and cumbersome detection preparation work. The present application intends to detect the sealing of the copper busbar injection molded part by a pressure test method. The applicant conducted a detailed search of the prior art using keywords such as copper busbar seal, pressure, test, seal, and detection, and found no relevant technical solutions.

[0009] In summary, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0010] The present application provides an airtight detection device for copper busbar injection molding, comprising a fixed plate, on which a sealing portion is provided, on which two sealing cavities cooperating with the sealing detection portion of the copper busbar injection molding are opened, the interiors of the two sealing cavities are connected, and one side of the sealing portion is provided with an air source device connected to the sealing cavity.

[0011] As a preferred solution, a sealing gasket is provided on the top of the sealing portion at the outer periphery of the top of the sealing cavity.

[0012] As a preferred solution, the outer periphery of the sealing cavity is provided with mounting holes at the top of the sealing portion, which are matched with screws on the sealing detection portion of the copper bar injection molding.

[0013] As a preferred solution, the gas source device includes an air intake pipe connected to the sealed cavity, the air intake pipe is connected to the gas source supply equipment, and the gas source supply equipment is connected to the gas source inlet, the regulating valve, and the pressure gauge.

[0014] As a preferred solution, the air source supply device adopts an air pump or a compressor.

[0015] As a preferred solution, the fixing plate is provided with a support column for supporting a support portion of the copper bar injection molding.

[0016] As a preferred solution, the cross-sectional shape of the support column is one of circular, rectangular, square and triangular.

[0017] This application has the following advantages:

[0018] 1. High detection efficiency: The results can be obtained relatively quickly without the need to observe the formation of bubbles for a long time;

[0019] 2. Compared with the bubble detection method, it is more sensitive to tiny leaks and can detect tiny leaks; it can meet basic detection needs for some occasions where the detection accuracy requirements are not particularly high;

[0020] 3. It can be applied to some injection molded parts with complex shapes or where bubbles are difficult to observe directly, and has a wider range of applications;

[0021] 4. The leakage degree can be assessed more accurately through pressure change data to achieve quantitative detection;

[0022] 5. Compared with the helium mass spectrometer leak detector, the application has a lower cost of use, and the operation and maintenance costs are also relatively low;

[0023] 6. No complicated helium supply and detection system is required, the operation process is easy to master and implement, and the operation is relatively simple:

[0024] 7. It has lower requirements on the environment and does not require strict requirements on the cleanliness of the environment like the helium mass spectrometry leak detection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the first angle of the present application;

[0026] Figure 2 This is a structural diagram of the second angle of the present application;

[0027] Figure 3 It is a structural schematic diagram of angle 1 of the workpiece to be detected in the present application;

[0028] Figure 4 It is a structural schematic diagram of angle 2 of the workpiece to be detected in the present application;

[0029] Figure 5 It is a schematic diagram of the angle of cooperation between the present application and the workpiece to be inspected;

[0030] 1. Fixing plate; 2. Sealing part; 3. Sealing detection part of copper busbar injection molding; 4. Sealing cavity; 5. Air source device; 6. Bracket; 7. Copper busbar injection molding; 8. Copper busbar injection molding support part; 9. Support column; 10. Sealing gasket; 11. Sealing groove; 12. Screw; 13. Mounting hole; 14. Air inlet pipe; 15. Air supply equipment; 16. Air inlet; 17. Regulating valve; 18. Pressure gauge. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 To Attachment Figure 5 The specific implementation of the utility model is described in detail. It should be noted that the specific implementation described here is only used to illustrate and explain the utility model, and is not used to limit the utility model.

[0032] Embodiment 1:

[0033] The present embodiment provides an airtight detection device for copper busbar injection molding, comprising a fixing plate 1, which is preferably rectangular, and a sealing portion 2 is arranged on the fixing plate 1. Preferably, the sealing portion 2 is rectangular, and the sealing portion 2 is connected to the fixing plate 1 by screw connection, welding, bonding and other commonly used connection methods in the prior art. In order to facilitate maintenance and replacement, it is preferably connected by screw connection; two sealing cavities 4 cooperating with the sealing detection portion 3 of the copper busbar injection molding are opened on the sealing portion 2, and the interiors of the two sealing cavities 4 are connected, and an air source device 5 connected to the sealing cavity 4 is arranged on one side of the sealing portion 2, and the air source device 5 is connected to the sealing portion 2 through a bracket 6 and screws; the air source device 5 introduces gas into the sealing cavity 4, and if the copper busbar and the injection molding are poorly sealed and cause leakage, the leakage amount will be checked by an external or external airtight inspection instrument (not shown in the figure) to determine whether the copper busbar injection molding 7 has poor sealing and causes leakage; the present application has a simple structure and is easy to use.

[0034] Preferably, in order to better support the copper busbar injection molding 7, a support column 9 for supporting the copper busbar injection molding support part 8 is provided on the fixing plate 1, and the support column 9 is connected by commonly used connection methods in the prior art such as screw connection, bonding, welding, etc. Preferably, it is connected by screws for easy disassembly and maintenance; the cross-sectional shape of the support column 9 is one of circular, rectangular, square, and triangular.

[0035] Preferably, in order to ensure better sealing detection, a sealing gasket 10 is provided on the top of the sealing cavity 4; more specifically, a sealing groove 11 is provided on the outer side of the top of the sealing cavity 4, and the sealing gasket 10 is installed in the sealing groove 11; in order to better achieve the stability of the installation of the copper busbar injection molding 7 and the present application, the outer periphery of the sealing cavity 4 is provided with an installation fixing hole 13 that cooperates with the screw 12 on the copper busbar injection molding sealing detection part 3 at the top of the sealing part 2, and the screw 12 is screwed into the installation fixing hole 13 to achieve a stable connection between the two.

[0036] Embodiment 2:

[0037] This embodiment specifically describes the gas source device 5, specifically:

[0038] The gas source device 5 includes an air intake pipe 14 connected to the sealed cavity 4, the air intake pipe 14 is connected to the air supply device 15, and the air supply device 15 is connected with an air source inlet 16, a regulating valve 17, and a pressure gauge 18; the air source supply device 15 adopts an air pump or a compressor; the air source inlet 16 provides air source to the air source supply device 15, and the regulating valve 17 regulates the pressure of the gas, and can accurately adjust the gas pressure to a set value according to actual needs, thereby ensuring the accuracy and stability of the pressure during the detection process. Reasonable pressure control can avoid excessive pressure from causing damage to the copper busbar injection molding 7 or the detection device, and at the same time It also prevents the pressure from being too low to affect the detection effect; and by adjusting the pressure, it can meet the different pressure requirements of different copper bar injection molded parts 7 or different detection standards, increase the flexibility of detection, and adapt to different detection requirements: the pressure gauge 18 can intuitively display the current gas pressure value, so that the operator can understand the pressure status at any time, and it is convenient to monitor the gas pressure in real time. And through the reading of the pressure gauge 18, it can be verified whether the pressure adjusted by the pressure regulating valve 17 meets the expectation, and the accuracy of pressure control is guaranteed. When the pressure changes abnormally or exceeds the safe range, it can promptly remind the operator to take measures to avoid danger or affect the detection results.

[0039] The working principle of this embodiment is: place the copper busbar injection molded part support part 8 on the support column 9, install the two copper busbar injection molded parts sealing detection parts 3 into the two sealing cavities 4 respectively, and connect the two by screws 12 and mounting fixing holes 13; turn on the air source supply device 15 and adjust the gas size according to the pressure regulating valve 17 to give the intake pressure, and after a certain pressure is stored in the sealing cavity 4, it is transferred back to the copper busbar injection molded part 7. If the copper busbar and the injection molded part are poorly sealed and cause leakage, the airtightness inspection instrument will check the leakage amount to determine whether the copper busbar injection molded part has poor sealing and causes leakage.

[0040] In summary, due to the adoption of the above technical solution, the present application has the following advantages:

[0041] 1. High detection efficiency: The results can be obtained relatively quickly without the need to observe the formation of bubbles for a long time;

[0042] 2. Compared with the bubble detection method, it is more sensitive to tiny leaks and can detect tiny leaks; it can meet basic detection needs for some occasions where the detection accuracy requirements are not particularly high;

[0043] 3. It can be applied to some injection molded parts with complex shapes or where bubbles are difficult to observe directly, and has a wider range of applications;

[0044] 4. The leakage degree can be assessed more accurately through pressure change data to achieve quantitative detection;

[0045] 5. Compared with the helium mass spectrometer leak detector, the application has a lower cost of use, and the operation and maintenance costs are also relatively low;

[0046] 6. No complicated helium supply and detection system is required, the operation process is easy to master and implement, and the operation is relatively simple:

[0047] 7. It has lower requirements on the environment and does not require strict requirements on the cleanliness of the environment like the helium mass spectrometry leak detection method.

[0048] The above-mentioned devices, connection relationships, etc. that are not specifically described belong to the prior art and will not be described in detail in the present utility model.

[0049] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art.

[0050] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of this application will not be described separately.

[0052] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. An airtightness detection device for copper busbar injection molding, comprising a fixing plate (1), characterized in that: The fixing plate (1) is provided with a sealing portion (2), the sealing portion (2) is provided with two sealing cavities (4) cooperating with the copper bar injection molded part sealing detection portion (3), the interiors of the two sealing cavities (4) are connected, and one side of the sealing portion (2) is provided with an air source device (5) connected with the sealing cavity (4).

2. The airtightness detection device for copper busbar injection molding according to claim 1 is characterized in that: A sealing gasket (10) is provided on the top of the sealing portion (2) at the outer periphery of the top of the sealing cavity (4).

3. The airtightness detection device for copper bar injection molding according to claim 1, characterized in that: The outer periphery of the sealing cavity (4) is provided with a mounting fixing hole (13) at the top of the sealing portion (2) which cooperates with the screw (12) on the sealing detection portion (3) of the copper bar injection molding.

4. The airtightness detection device for copper busbar injection molding according to claim 1, characterized in that: The gas source device (5) comprises an air intake pipe (14) connected to the sealed cavity (4); the air intake pipe (14) is connected to a gas source supply device (15); and the gas source supply device (15) is connected to a gas source inlet (16), a regulating valve (17), and a pressure gauge (18).

5. The airtightness detection device for copper busbar injection molding according to claim 4, characterized in that: The air source supply device (15) is an air pump or a compressor.

6. The airtightness detection device for copper bar injection molding according to claim 1, characterized in that: The fixing plate (1) is provided with a support column (9) for supporting the copper bar injection molding support part (8).

7. The airtightness detection device for copper bar injection molding according to claim 6, characterized in that: The cross-sectional shape of the support column (9) is one of a circle, a rectangle, a square and a triangle.

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