Calibration equipment for electronic control cavity of electronic water pump

Abstract

The invention discloses electronic water pump electric control cavity verification equipment. The equipment comprises a cabinet body, an air tightness detector and a plurality of groups of air tightness tools which are uniformly arranged in the cabinet body; each group of airtight tools comprises a lower base, a lower mold and an upper mold which is horizontally arranged in the cabinet body in a lifting manner and can cover the lower mold; an air outlet hole communicated with the interior of the lower base is vertically formed in the lower base in a penetrating mode, the lower mold and the upper mold are provided with a lower mold cavity and an upper mold cavity respectively, an air injection pipe communicated with the interior of the lower mold is further fixedly arranged on the lower mold, and the air injection pipe is connected with an air outlet end connected to an air tightness detector; according to the electronic water pump electric control cavity verification equipment, the to-be-tested product can be completely sealed in the sealing die cavity of the airtight tool through the airtight tool, the detection result is prevented from being affected by external gas, the detection precision is improved, the airtight tool can also rapidly seal the product in the sealing die cavity of the airtight tool, multiple products can be detected at the same time, and the detection efficiency is improved. And the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection of electronic water pumps, and in particular to a device for checking an electric control cavity of an electronic water pump. Background Art

[0002] Automotive electronic water pumps, many new energy vehicles, RVs and other special vehicles often use micro water pumps as water circulation, cooling or on-board water supply systems. This kind of micro self-priming water pump is collectively called automotive water pumps. During the production and processing of electronic water pumps, the overall sealing performance and airtightness performance requirements are very high. In order to meet the production requirements, the airtightness test of the electronic water pumps to be shipped is usually carried out.

[0003] However, the electronic water pump air tightness detection device in the prior art has the following technical defects when working:

[0004] The existing water pump air tightness test generally adopts the method of clamping the electronic water pump and plugging the test port with rubber. However, due to the inadequate plugging or the water pump moving when clamping the electronic water pump, the test result may be inaccurate. In addition, the clamping process is cumbersome, which reduces the detection efficiency.

[0005] Therefore, it is an urgent problem to be solved by the present invention to provide an electronic water pump electric control cavity calibration device which can completely seal the product to be tested in the sealed mold cavity of the airtight tooling during use, prevent external gas from affecting the test results, and improve the test accuracy. The airtight tooling can also quickly seal the product in its sealed mold cavity and can test multiple products at the same time, thereby improving the test efficiency. Summary of the invention

[0006] In view of the above technical problems, the purpose of the present invention is to overcome the problem that the prior art adopts the method of clamping the electronic water pump and blocking the test port with rubber, but the test results are inaccurate due to improper blocking or the water pump is easily moved when the electronic water pump is clamped, and the operation during the clamping process is cumbersome, which reduces the detection efficiency. Thus, an electronic water pump electric control cavity calibration device is provided, which can completely seal the product to be tested in the sealed mold cavity of the airtight tooling through the airtight tooling during use, prevent external gas from affecting the detection result, and improve the detection accuracy. The airtight tooling can also quickly seal the product in its sealed mold cavity, and can test multiple products at the same time, thereby improving the detection efficiency.

[0007] In order to achieve the above-mentioned object, the present invention provides an electronic water pump electric control cavity inspection device, the device comprising: a cabinet, an airtightness detector and a plurality of sets of airtight tooling uniformly arranged inside the cabinet and used to fix the electronic water pump;

[0008] Each set of the airtight tooling comprises: a lower base with a hollow interior, a lower mold fixed on the lower base, and an upper mold horizontally and liftably arranged in the cabinet and capable of covering and being on the lower mold; wherein,

[0009] The lower base located inside the lower mold is vertically penetrated with an air outlet hole connected with the interior thereof, and a No. 1 sealing ring is horizontally fixedly provided on the upper end of the lower base. The bottom end of the lower mold can abut against the No. 1 sealing ring, and a No. 2 sealing ring is horizontally fixedly provided on the upper end of the lower mold. The lower mold and the upper mold are respectively provided with a lower mold cavity and an upper mold cavity adapted to the pump body, so that the lower mold cavity of the lower mold and the upper mold cavity of the upper mold form a sealed mold cavity for clamping the pump body, and the lower mold is also fixedly provided with an air injection pipe connected with the interior thereof, and the air injection pipe is connected to the air outlet end connected to the airtightness detector, and the air inlet end of the airtightness detector is connected to an external air source.

[0010] Preferably, the device further comprises: a gas storage tank storing a compressed gas source; wherein,

[0011] An electric control cabinet is fixedly arranged at the lower end of the cabinet body, the gas storage tank and the air tightness detector are respectively fixedly arranged inside the electric control cabinet, and the air inlet end of the air tightness detector is connected to the gas storage tank.

[0012] Preferably, the device further comprises a lifting assembly for driving the upper mold of each set of airtight tooling to move up and down in a vertical direction.

[0013] Preferably, the lifting assembly comprises: an upper base, a fixing plate and a servo electric cylinder; wherein,

[0014] A fixing plate is horizontally fixed inside the cabinet directly above each lower mold, a servo electric cylinder is vertically fixed through the fixing plate, an upper base is fixed at the telescopic end of the servo electric cylinder, and the upper mold used in conjunction with the lower mold is fixed at the bottom end of the upper base.

[0015] Preferably, guide sleeves are vertically penetrated and fixedly arranged at the four corners of the upper base, and a plurality of guide rods corresponding to and matching all the guide sleeves are evenly and vertically fixedly arranged between the lower base and the fixed plate directly above it, and each of the guide sleeves can be slidably mounted on the corresponding guide rod.

[0016] Preferably, a lighting lamp is fixedly installed inside the cabinet.

[0017] Preferably, a Fuma wheel is evenly and rotatably provided at the bottom end of the electric control cabinet.

[0018] Preferably, a pressure-maintaining valve is fixedly provided on the gas injection pipe.

[0019] According to the above technical solution, the electronic water pump electric control cavity calibration device provided by the present invention has the following beneficial effects when used:

[0020] (1) The electronic water pump to be tested is placed in the lower mold cavity of the lower mold, and the upper mold is driven to descend linearly in the longitudinal direction until it abuts against the lower mold, so that the upper mold covers the lower mold to form a sealed mold cavity, thereby enclosing the electronic water pump to be tested in the sealed mold cavity, and when the upper mold descends and abuts against the lower mold, the bottom end of the upper mold squeezes the No. 2 sealing ring on the lower mold, so that the connection between the upper mold and the lower mold is in a sealed state, thereby improving the sealing of the sealed mold cavity formed by the upper mold and the lower mold. The No. 1 sealing ring on the bottom end of the lower mold is to ensure the sealing between the lower mold and the lower base, and prevent the gap between the lower mold and the lower base from affecting the sealing inside the sealed mold cavity.

[0021] Therefore, the product to be tested can be completely sealed in the sealed mold cavity of the airtight tooling through the airtight tooling, and during the testing process, external gas is prevented from affecting the test results, thereby improving the test accuracy.

[0022] (2) During testing, there is no need to seal the test port of the product. The product to be tested only needs to be sealed and stored in a sealed mold cavity formed by an airtight tooling, and a certain amount of compressed gas is injected into the airtight workpiece. The product can then be tested. Therefore, the test result will not be affected by the test port not being properly blocked, thereby improving the test accuracy.

[0023] (3) The present invention can quickly seal the product to be tested in a sealed mold cavity formed by splicing the airtight tooling, which is easy to operate and improves the detection efficiency. In addition, multiple products to be tested can be tested during the detection process, further improving work efficiency.

[0024] In summary, the present invention can completely seal the product to be tested in the sealed mold cavity of the airtight tooling through the airtight tooling, prevent external gas from affecting the test results, and improve the test accuracy. The airtight tooling can also quickly seal the product in its sealed mold cavity and can test multiple products at the same time, thereby improving the test efficiency.

[0025] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation mode; and the parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of an electronic water pump electric control cavity calibration device provided in a preferred embodiment of the present invention;

[0028] Figure 2 It is a structural front view of an electronic water pump electric control cavity calibration device provided in a preferred embodiment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of another perspective of an electronic water pump electric control cavity calibration device provided in a preferred embodiment of the present invention;

[0030] Figure 4 It is a schematic diagram of assembling an upper mold and a lower mold of an electronic water pump electric control cavity inspection device provided in a preferred embodiment of the present invention;

[0031] Figure 5 yes Figure 4 A structural diagram from another perspective;

[0032] Figure 6 It is a structural schematic diagram of a cabinet of an electronic water pump electric control cavity calibration device provided in a preferred embodiment of the present invention.

[0033] Description of Reference Numerals

[0034] 1. Cabinet; 2. Lower base; 3. Lower mold; 4. Upper mold; 5. Upper base; 6. Fixed plate; 7. No. 1 sealing ring; 8. Air outlet; 9. No. 2 sealing ring; 10. Pressure retaining valve; 11. Guide rod; 12. Guide sleeve; 13. Electric control cabinet; 14. Air tightness detector; 15. Gas storage tank; 16. Servo electric cylinder; 17. Lighting lamp. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0036] like Figure 1-6 As shown, the present invention provides an electronic water pump electric control cavity inspection device, the device comprising: a cabinet 1, an airtightness detector 14 and a plurality of sets of airtight tooling uniformly arranged inside the cabinet 1 and used to fix the electronic water pump;

[0037] Each set of the airtight tooling comprises: a lower base 2 with a hollow interior, a lower mold 3 fixed on the lower base 2, and an upper mold 4 horizontally and liftably arranged in the cabinet 1 and capable of covering and being on the lower mold 3; wherein,

[0038] The lower base 2 located inside the lower mold 3 is vertically penetrated with an air outlet 8 connected with the interior thereof, and a No. 1 sealing ring 7 is also horizontally fixedly provided on the upper end of the lower base 2. The bottom end of the lower mold 3 can abut against the No. 1 sealing ring 7, and a No. 2 sealing ring 9 is horizontally fixedly provided on the upper end of the lower mold 3. The lower mold 3 and the upper mold 4 are respectively provided with a lower mold cavity and an upper mold cavity adapted to the pump body, so that the lower mold cavity of the lower mold 3 and the upper mold cavity of the upper mold 4 are spliced ​​together to form a sealed mold cavity for clamping the pump body, and the lower mold 3 is also fixedly provided with an air injection pipe connected with the interior thereof, and the air injection pipe is connected to the air outlet end connected to the airtightness detector 14, and the air inlet end of the airtightness detector 14 is connected to an external air source.

[0039] In the above scheme, the airtight tooling is provided in two or more groups. In this embodiment, taking two groups as an example, two groups of airtight tooling are provided in the cabinet 1, and the air injection pipes of the two lower bases 2 of the two groups of airtight tooling are respectively connected to the air outlet ends of the two airtight detectors 14, and the two groups of airtight tooling can work simultaneously or separately.

[0040] When in use, the electronic water pump to be tested is placed in the lower mold cavity of the lower mold 3, and the upper mold 4 is driven to descend linearly in the longitudinal direction until it abuts against the lower mold 3, so that the upper mold 4 covers the lower mold 3 to form a sealed mold cavity, thereby enclosing the electronic water pump to be tested in the sealed mold cavity, and when the upper mold 4 descends and abuts against the lower mold 3, the bottom end of the upper mold 4 squeezes the No. 2 sealing ring 9 on the lower mold 3, so that the connection between the upper mold 4 and the lower mold 3 is in a sealed state, thereby improving the sealing of the sealed mold cavity formed by the upper mold 4 and the lower mold 3. Connect the airtightness detector 14 to the factory air source (or booster pump). This step ensures a stable supply of air source and is a prerequisite for gas injection. The gas is accurately and effectively injected into the lower base 2 through the gas injection pipe through the airtightness detector 14, and finally enters the sealed cavity formed by the upper mold 4 and the lower mold 3 through the air outlet 8 on the lower base 2. In addition, the No. 1 sealing ring 7 on the bottom of the lower mold 3 is to ensure the sealing between the lower mold 3 and the lower base 2, and prevent the gap between the lower mold 3 and the lower base 2 from affecting the sealing inside the sealed cavity. The airtightness detector 14 is used to detect the rate at which gas leaks out of the product being tested. According to the size of the leakage rate, it can be judged whether the airtightness of the product being tested is qualified.

[0041] The detection steps of the airtight detector 14 include:

[0042] Step 1: Connect the gas source and gas line: First, the air tightness tester needs to be connected to the factory gas source (or booster pump), and the gas source pressure is maintained at 4.5-7 bar. This step ensures the stable supply of the gas source and is a prerequisite for gas injection; the medium gas is compressed air.

[0043] Step 2: Set test parameters: According to product requirements and test standards, set test pressure, test time, leakage and other parameters. The setting of these parameters is directly related to the accuracy and efficiency of the test and is the key to ensuring the quality of the test;

[0044] The detection cycle is: gas injection time is 30s, detection time is 46s, the detection display accuracy of the airtightness detector 14 is 0.1Pa or 0.001ml / min; the test air pressure is 300kPa, the leakage of the electric control chamber is less than 5Pa / s, and the minimum gas supply pressure is not less than 0.6MPa; the gas source quality is ISO 8573-1 4 or above (oil content: <7mg / m3; particle size: <0.001mm).

[0045] In addition, please note: the compressed air must be clean and dry. It is best to install a filter and a drying device before the compressed air enters the measuring machine.

[0046] Step 3: Place the product: Place the product to be tested (electronic water pump) in an airtight tooling (that is, place the electronic water pump to be tested in a sealed mold cavity formed by the upper mold 4 and the lower mold 3), and ensure that the seal between the product and the fixture is good to prevent external air from affecting the test results.

[0047] Step 4: Start the test: Press the start button, and the airtightness detector 14 starts to fill the sealed mold cavity of the airtight tooling with compressed air. Within the set time, the change of the internal pressure of the product is detected.

[0048] Therefore, through the above steps, the airtightness detector 14 can accurately and effectively inject compressed air into the airtight tooling for sealing and storing the electronic water pump to be tested, and use the leakage detection method to determine whether the airtightness of the electronic water pump is qualified. The leakage detection method is a method of directly detecting the gas leakage rate to determine the airtightness performance of the product. The basic principle is: the product to be tested is placed in a closed test environment and filled with a certain pressure of gas. Then, the rate at which the gas leaks out of the product to be tested is detected by the airtightness detector 14. According to the size of the leakage rate, it can be determined whether the airtightness performance of the product to be tested is qualified. The whole process has a high degree of automation and is simple to operate, which can effectively guarantee the quality and performance of the electronic water pump.

[0049] In summary, the airtight tooling of the present invention can quickly seal the product to be tested in the sealed mold cavity formed by its splicing, is easy to operate, improves the detection efficiency, and can detect multiple products to be tested during the detection process, further improving work efficiency.

[0050] In a preferred embodiment of the present invention, the device further comprises: a gas storage tank 15 storing a compressed gas source therein; wherein,

[0051] An electric control cabinet 13 is fixedly installed at the lower end of the cabinet body 1 . The gas storage tank 15 and the air tightness detector 14 are fixedly installed inside the electric control cabinet 13 , respectively. The air inlet end of the air tightness detector 14 is connected to the gas storage tank 15 .

[0052] In the above scheme, compressed air is stored in the air storage tank 15, and the compressed air stored in the air storage tank 15 is used as an air source to inject compressed air into the airtight working chamber.

[0053] In a preferred embodiment of the present invention, the device further comprises a lifting component for driving the upper mold 4 of each set of airtight tooling to move up and down in a vertical direction.

[0054] In the above solution, the upper mold 4 can be driven to move up and down in the vertical direction by the lifting mechanism.

[0055] In a preferred embodiment of the present invention, the lifting assembly comprises: an upper base 5, a fixing plate 6 and a servo electric cylinder 16; wherein,

[0056] A fixing plate 6 is horizontally fixedly provided inside the cabinet 1 directly above each of the lower molds 3, a servo electric cylinder 16 is vertically penetrated and fixedly provided on the fixing plate 6, an upper base 5 is fixedly provided at the telescopic end of the servo electric cylinder 16, and the upper mold 4 used in conjunction with the lower mold 3 is fixedly provided at the bottom end of the upper base 5.

[0057] In the above scheme, when in use, the upper base 5 and the upper mold 4 fixed on the upper base 5 are driven to rise and fall in the vertical direction by driving the servo electric cylinder 16.

[0058] When the service electric cylinder 16 drives the upper base 5 and the upper mold 4 thereon to descend to the corresponding lower mold 3, the upper mold 4 and the lower mold 3 are abutted against each other to form a sealed mold cavity for holding the electronic water pump to be tested, so that the electronic water pump to be tested is sealed in the sealed mold cavity formed by the upper mold 4 and the lower mold 4 to wait for testing.

[0059] After the inspection is completed, the upper base 5 and the upper mold 4 thereon are driven to rise by the service electric cylinder 16 to separate the upper mold 4 from the lower mold 3 and restore them to their initial positions, so as to remove the electronic water pump after the inspection.

[0060] In a preferred embodiment of the present invention, guide sleeves 12 are vertically and fixedly provided at the four corners of the upper base 5, and a plurality of guide rods 11 corresponding to and matching all the guide sleeves 12 are evenly and vertically fixedly provided between the lower base 2 and the fixed plate 6 directly above it, and each of the guide sleeves 12 can be slidably mounted on the corresponding guide rod 11.

[0061] In the above scheme, the guide sleeve 12 and the guide rod 11 are used in coordination, so that the upper base 5 can drive the upper mold 4 to be lifted and lowered smoothly and reliably along the guide rod 11 through the guide sleeve 12 .

[0062] In a preferred embodiment of the present invention, a lighting lamp 17 is fixedly installed inside the cabinet 1 .

[0063] In the above solution, the interior environment of the cabinet 1 can be illuminated by the lighting lamp 17, so that the interior of the cabinet 1 is bright and convenient for the staff to operate.

[0064] In a preferred embodiment of the present invention, a Fumar wheel is evenly and rotatably provided at the bottom end of the electric control cabinet 13 .

[0065] In the above scheme, the entire device can be moved or transported.

[0066] In a preferred embodiment of the present invention, a pressure-maintaining valve 10 is fixedly provided on the gas injection pipe.

[0067] In the above scheme, the pressure-maintaining valve 10 plays a role in maintaining pressure, and during the detection process, it ensures that the air pressure in the sealed mold cavity of the airtight tooling is stable.

[0068] In summary, the electronic water pump electric control cavity calibration equipment provided by the present invention overcomes the problem that the prior art adopts the method of clamping the electronic water pump and blocking the test port with rubber, but the test results may be inaccurate due to improper blocking or the water pump may move when the electronic water pump is clamped, and the clamping process is cumbersome to operate, thereby reducing the detection efficiency.

[0069] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0070] 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 present invention will not further describe various possible combinations.

[0071] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An electronic water pump electric control cavity calibration device, characterized in that: The device comprises: a cabinet (1), an airtightness detector (14), and a plurality of sets of airtightness tooling evenly arranged inside the cabinet (1) and used to fix the electronic water pump; Each set of the airtight tooling comprises: a lower base (2) with a hollow interior, a lower mold (3) fixed on the lower base (2), and an upper mold (4) horizontally and liftably arranged inside the cabinet (1) and capable of covering and being placed on the lower mold (3); wherein: The lower base (2) located inside the lower mold (3) is vertically penetrated with an air outlet (8) connected to the interior thereof, and a No. 1 sealing ring (7) is also horizontally fixedly arranged on the upper end of the lower base (2). The bottom end of the lower mold (3) can abut against the No. 1 sealing ring (7), and a No. 2 sealing ring (9) is horizontally fixedly arranged on the upper end of the lower mold (3). The lower mold (3) and the upper mold (4) are respectively provided with a lower mold cavity and an upper mold cavity adapted to the pump body, so that the lower mold cavity of the lower mold (3) and the upper mold cavity of the upper mold (4) form a sealed mold cavity for clamping the pump body. The lower mold (3) is also fixedly provided with an air injection pipe connected to the interior thereof, and the air injection pipe is connected to the air outlet end connected to the air tightness detector (14), and the air inlet end of the air tightness detector (14) is connected to an external air source.

2. The electronic water pump electric control cavity calibration equipment according to claim 1, characterized in that: The device also includes: a gas storage tank (15) storing a compressed gas source; wherein: An electric control cabinet (13) is fixedly arranged at the lower end of the cabinet body (1), the gas storage tank (15) and the air tightness detector (14) are respectively fixedly arranged inside the electric control cabinet (13), and the air inlet end of the air tightness detector (14) is connected to the gas storage tank (15).

3. The electronic water pump electric control cavity calibration equipment according to claim 1, characterized in that: The device also includes a lifting component for driving the upper mold (4) of each set of airtight tooling to move up and down in a vertical direction.

4. The electronic water pump electric control cavity calibration equipment according to claim 3, characterized in that: The lifting assembly comprises: an upper base (5), a fixing plate (6) and a servo electric cylinder (16); wherein: A fixing plate (6) is horizontally fixedly arranged inside the cabinet (1) directly above each lower mold (3), a servo electric cylinder (16) is vertically penetrated and fixedly arranged on the fixing plate (6), an upper base (5) is fixedly arranged at the telescopic end of the servo electric cylinder (16), and the upper mold (4) used in conjunction with the lower mold (3) is fixedly arranged at the bottom end of the upper base (5).

5. The electronic water pump electric control cavity calibration equipment according to claim 4, characterized in that: Guide sleeves (12) are vertically and fixedly provided at the four corners of the upper base (5), and a plurality of guide rods (11) corresponding to and matching all the guide sleeves (12) are evenly and vertically fixedly provided between the lower base (2) and the fixed plate (6) directly above it, and each guide sleeve (12) can be slidably sleeved on the corresponding guide rod (11).

6. The electronic water pump electric control cavity calibration equipment according to claim 1, characterized in that: A lighting lamp (17) is fixedly arranged inside the cabinet (1).

7. The electronic water pump electric control cavity calibration equipment according to claim 2, characterized in that: The bottom end of the electric control cabinet (13) is evenly and rotatably provided with a Fuma wheel.

8. The electronic water pump electric control cavity calibration equipment according to claim 1, characterized in that: A pressure-maintaining valve (10) is fixedly arranged on the gas injection pipe.

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