Casting shell sealing performance detection tool clamp
By designing a fixture for testing the airtightness of casting shells, the problem of airtightness testing for irregular shapes and internal cavity electrical connections of casting shells was solved, achieving uniform gas distribution and interface sealing, thus improving the accuracy and efficiency of testing.
Patent Information
- Application Number
- CN202422652536.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing technologies struggle to simultaneously ensure the airtightness of the irregular shape of the casting shell and the multiple electrical connections within the internal chambers during airtightness testing, and also suffer from unstable air pressure.
A fixture for testing the sealing performance of casting shells was designed, including a base, an inner liner, a pressing plate, a pressing device, and a sealing device. By combining an inflation port, an exhaust port, an air groove, and a barometer, uniform gas distribution and synchronous testing are achieved. An elastic telescopic rod and a rubber gasket are used to ensure the sealing performance of the interface.
This improves the accuracy and efficiency of airtightness testing of casting shells, prevents unstable air pressure, and ensures the reliability of test results.
Smart Images
Figure CN223671000U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of airtightness detection tool equipment, and particularly relates to a cast shell airtightness detection tool clamp. BACKGROUND
[0002] The new energy automobile electrical assembly is sealed and protected by a protective cover outside, the sealing cover has multiple electrical connection ports, a cast shell is formed in a pouring manner, in order to ensure the finished product qualification rate and prevent the cast shell from having problems such as air holes and cracks, airtightness detection needs to be performed.
[0003] Since the cast shell has an irregular shape and multiple chambers can exist inside, in the airtightness detection process, the airtightness of the electrical connection ports needs to be ensured to be good, and at the same time, the multiple chambers inside need to be inflated synchronously to prevent the phenomenon of unstable air pressure in the pressure stabilizing stage. The utility model prepares a detection clamp for the cast shell, is used for fixing the cast shell, simultaneously ensures that the airtightness of the interface position is good, and makes the detection result more accurate. UTILITY MODEL CONTENTS
[0004] The utility model discloses a cast shell airtightness detection tool clamp, prepares the detection clamp for the cast shell, is used for fixing the cast shell, simultaneously ensures that the airtightness of the interface position is good, and makes the detection result more accurate.
[0005] To solve the above technical problems, the utility model is realized through the following technical schemes:
[0006] The cast shell airtightness detection tool clamp, including the base, the base upper side installs the inner lining table, is used for supporting the cast shell, the base top installs the pressing plate, the pressing plate installs multiple pressing devices and sealing devices, the pressing plate top installs the drive device that drives the pressing plate moves towards the inner lining table;
[0007] The base upper side has the support block that supports the inner lining table, the support block side has the inflation hole, has the cavity in the inside, the surface has multiple gas outlets, the inner lining table bottom is equipped with multiple strip-shaped air grooves, and the gas outlet corresponds to the air groove.
[0008] Further, the pressing device and the sealing device all include a cushion block and an elastic telescopic rod, the elastic telescopic rod includes a pressing rod and a sleeve, one end of the pressing rod is fixed with the cushion block, the other end is sleeved in the sleeve, and is elastically telescopic through a spring.
[0009] Further, the pressing plate top is installed with a positioning plate, the positioning plate is supported between the base through a support column in the position corresponding to the corner, the pressing plate corner position has a column sleeve sleeved with the support column, and the drive device is a first air cylinder assembly located in the positioning plate.
[0010] Further, the inner lining table has a plurality of lining blocks for filling the groove of the casting shell.
[0011] Further, the upper side of the support block has a sealing groove accommodating the side of the casting shell, and a rubber gasket is installed in the sealing groove.
[0012] Further, the base has a plurality of clamping assemblies corresponding to the side of the casting shell, and the clamping assembly comprises a second cylinder assembly and a sealing block at the output end of the cylinder assembly, and the sealing block is used for directly interfacing with the side wall of the casting shell.
[0013] The utility model has the following beneficial effects: the inflation hole is used for connecting the inflation pump through the air pipe, air is filled into the internal cavity of the support block, and then is uniformly discharged through the plurality of air outlet holes, the air distribution uniformity and synchronism are improved, the air pipe is also connected with the air pressure gauge, is used for maintaining a period of time under the inflation saturation state, tests whether the air pressure gauge reading is stable at a constant value, and is used for judging whether the air tightness of the casting shell is good. The inner lining table is used for supporting the casting shell and limiting the installation position of the casting shell, the bottom of the inner lining table is the cross staggered air groove, the air flow is discharged by the air groove after the air outlet hole discharges the air flow, and the air hole is prevented from being blocked due to the blocking effect of the inner lining table. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawing needed to be used for the embodiment description.
[0015] Figure 1 The utility model structure schematic diagram.
[0016] Figure 2 The utility model support block and casting shell cooperation installation structure schematic diagram.
[0017] Figure 3 The utility model support block and casting shell cooperation structure schematic diagram.
[0018] Figure 4 The utility model support block and casting shell cooperation installation structure schematic diagram.
[0019] In the drawing, the component list represented by each sign is as follows: base 1, support block 2, inner lining table 3, casting shell 6, pressing plate 4, inflation hole 21, air groove 31, pad 41, elastic telescopic rod 42, positioning plate 5, support column 51, first cylinder assembly 52, lining block 32, sealing groove 22, rubber gasket 23, second cylinder assembly 7, sealing block 71. DETAILED DESCRIPTION
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] like Figures 1-2 As shown: A fixture for testing the airtightness of a casting shell includes a base 1 with control buttons. An inner liner 3 is mounted on the upper side of the base 1 to support the casting shell 6. The casting shell is a shell structure that fits and wraps around the inner liner. A pressing plate 4 is mounted above the base 1. The pressing plate 4 is equipped with multiple pressing devices and sealing devices. A driving device is mounted above the pressing plate 4 to drive the pressing plate 4 to move towards the inner liner 3. The bottom of the casting shell is open, and the upper part also has multiple interface grooves. During the airtightness test, the driving device drives the pressing plate to move towards the casting shell, and the corresponding pressing devices contact the upper side of the casting shell to stabilize the casting shell by pressing. At the same time, the sealing devices correspond to the interface grooves on the upper side of the casting shell to position and seal the interfaces to prevent air leakage.
[0022] like Figures 3-4 As shown: The base 1 has a support block 2 on its upper side that supports the inner liner platform 3. The support block is a plate structure with air inlets 21 on its side, an internal cavity, and multiple air outlets on its surface. The bottom of the inner liner platform 3 has multiple strip-shaped air grooves 31, with the air outlets corresponding to the air grooves 31. The air inlets are used to connect to an air pump via an air pipe, allowing air to be injected into the cavity inside the support block and then evenly discharged through the multiple air outlets, improving the uniformity and synchronization of air distribution. The air pipe is also connected in series with a barometer, which is used to maintain the air saturation state for a period of time to test whether the barometer reading is stable at a constant value, thus determining whether the airtightness of the casting shell is good. The inner liner platform supports the casting shell and defines its installation position. The bottom of the inner liner platform has cross-shaped air grooves. Air released from the air outlets enters the air grooves and is discharged through the air grooves, preventing the air inlets from being blocked by the inner liner platform.
[0023] like Figure 2 As shown: Both the pressing device and the sealing device include a pad 41 and an elastic telescopic rod 42. The elastic telescopic rod includes a pressing rod and a sleeve. One end of the pressing rod is fixed to the pad, and the other end is sleeved on the sleeve, and elastic expansion and contraction are achieved by a spring. The pad has a circular structure, and the side in contact with the casting shell is a rubber pad. When the pressing plate moves towards the casting shell, the elastic pressing action of the elastic telescopic rod achieves elastic contact between the pad and the casting shell. The pad can, on the one hand, position the casting shell to prevent displacement of the shell during the airtightness test, and on the other hand, seal the interface groove of the casting shell to prevent air leakage and affect the test accuracy.
[0024] like Figure 2As shown: the pressing plate 4 is installed with a positioning plate 5, the positioning plate 5 is supported between the base 1 through a support column 51 corresponding to the corner position, the pressing plate 4 has a column sleeve sleeved with the support column 51 at the corner position, and the driving device is a first cylinder assembly 52 located in the positioning plate 5. The support column is not only used for supporting the positioning plate, but also provides a guide column for stable movement of the pressing plate. The lining table 3 has a plurality of lining blocks 32 for filling the groove of the casting shell 6. Since the casting shell is an irregular structure and has a plurality of accommodating grooves inside, the detection accuracy and efficiency can be improved by reducing the air volume after the lining blocks occupy the volume.
[0025] As shown in Figure 3 As shown: the support block 2 has a sealing groove 22 accommodating the side of the casting shell 6 on the upper side, and a rubber gasket 23 is installed in the sealing groove 22. The sealing groove is used for positioning the installation of the casting shell, and prevents displacement in a stable state, and improves the sealing property after the rubber gasket is installed.
[0026] As shown in Figure 2 As shown: the base 1 has a plurality of clamping assemblies corresponding to the side of the casting shell 6, the clamping assembly includes a second cylinder assembly 7 and a sealing block 71 located at the output end of the second cylinder assembly 7, and the sealing block 71 is used for sealing the side wall interface of the casting shell 6. For side sealing.
[0027] The embodiments are selected and specifically described in the specification in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model.
Claims
1. A foundry shell sealing inspection fixture, characterized by: Including the base (1), the upper side of the base (1) is provided with a lining table (3) for supporting the casting shell (6), the upper side of the base (1) is provided with a pressing plate (4), the pressing plate (4) is provided with a plurality of pressing devices and sealing devices, the pressing plate (4) is provided with a driving device for driving the pressing plate (4) to move towards the lining table (3); The upper side of the base (1) is provided with a support block (2) for supporting the lining table (3), the side of the support block (2) is provided with an inflation hole (21), the inside is provided with a cavity, and the surface is provided with a plurality of air outlet holes, the bottom of the lining table (3) is provided with a plurality of strip-shaped air grooves (31), and the air outlet holes correspond to the air grooves (31).
2. The mold shell seal inspection fixture of claim 1, wherein: The pressing device and the sealing device each include a cushion block (41) and an elastic telescopic rod (42), the elastic telescopic rod includes a pressing rod and a sleeve, one end of the pressing rod is fixed with the cushion block, the other end is sleeved with the sleeve, and the elastic telescopic rod is elastically telescopic through a spring.
3. The mold shell seal inspection fixture of claim 1, wherein: The upper side of the pressing plate (4) is provided with a positioning plate (5), the positioning plate (5) is supported between the base (1) through a support column (51) corresponding to the corner position, the corner position of the pressing plate (4) is provided with a column sleeve sleeved with the support column (51), and the driving device is a first cylinder assembly (52) located in the positioning plate (5).
4. The mold shell seal inspection fixture of claim 1, wherein: The lining table (3) has a plurality of lining blocks (32) for filling the groove of the casting shell (6).
5. The mold shell seal inspection fixture of claim 1, wherein: The upper side of the support block (2) is provided with a sealing groove (22) for accommodating the side of the casting shell (6), and the sealing groove (22) is provided with a rubber gasket (23).
6. The mold shell seal integrity inspection fixture of claim 1, wherein: The side of the base (1) corresponding to the casting shell (6) is provided with a plurality of clamping assemblies, the clamping assembly includes a second cylinder assembly (7) and a sealing block (71) located at the output end of the second cylinder assembly (7), and the sealing block (71) is used for facing the side wall interface of the casting shell (6).