Aluminum casting detection tool clamp

Abstract

The utility model discloses an aluminum casting detection tool clamp which is provided with a first opening side, a second opening side, a third opening side and a fourth opening side corresponding to the bottom of an aluminum casting and comprises a supporting plate, a pressing plate is installed above the supporting plate, a supporting block is fixed to the supporting face of the supporting plate, and the side, corresponding to the supporting block, of the supporting plate is provided with a sealed second opening side. The second sealing plug and the third sealing plug are arranged on the third opening side; a fourth sealing plug for sealing the fourth opening side is mounted on the lower side of the pressing plate; the upper side of the pressing plate is provided with a driving assembly, and the lower side of the pressing plate is provided with a first fixing assembly and a second fixing assembly for fixing aluminum castings. The whole aluminum casting is firstly positioned, then the pressing plate is driven to press downwards, the pressing plate corresponds to the fixing assembly and corresponds to different positions of the aluminum casting, generally, the fixing points correspond to the positions of the grooves, the fixing points are scattered, multi-point type positioning and fixing are facilitated, and the fixing assembly is conveniently positioned and stably clamped through the positions of the grooves.

Description

Technical Field

[0001] The utility model belongs to the technical field of airtightness detection equipment, and particularly relates to a detection tooling fixture for aluminum castings. Background Art

[0002] Differential pressure airtightness detection is a detection method that calculates the leakage amount by measuring the change in pressure inside a container using the gas flow formula. Due to leakage in a sealed container, the mass of the gas inside the container will inevitably be lost, causing the original pressure inside the container to decrease. Therefore, the actual amount of leaked gas from the container can be calculated by measuring the value of the decrease in gas pressure inside the container; the working cycle of differential pressure airtightness detection includes 4 processes, namely the inflation process, the equilibrium process, the detection process, and the exhaust process.

[0003] Most aluminum castings are used in the housing structures of automotive engines, oil pipelines, gearboxes, etc., and have multiple pipeline structures inside. After the aluminum castings are cast and demolded, airtightness detection is required to prevent air leakage phenomena such as pores in the castings. However, the corresponding structural parts of aluminum castings are relatively diverse and have different shapes, and there is no targeted detection fixture for fixation yet. Content of the Utility Model

[0004] The purpose of the utility model is to provide a detection tooling fixture for aluminum castings, which solves the problem that the structure is not easy to fix during airtightness detection due to the irregular shape of aluminum castings.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] A detection tooling fixture for aluminum castings has a first opening side corresponding to the bottom of the aluminum casting, a second opening side and a third opening side on the side, and a fourth opening side on the top;

[0007] It includes a support plate, a pressing plate is installed above the support plate, a support block is fixed on the support surface of the support plate, the support block has a groove for accommodating the aluminum casting, the first opening side corresponding to the aluminum casting coincides with the groove, an inflation hole is provided at the bottom of the groove, and a second sealing plug and a third sealing plug for sealing the second opening side and the third opening side are installed beside the support plate corresponding to the support block; a fourth sealing plug for sealing the fourth opening side is installed on the lower side of the pressing plate;

[0008] A driving component is provided on the upper side of the pressing plate for driving the pressing plate to move towards the support plate, and a first fixing component and a second fixing component for fixing the aluminum casting are provided on the lower side of the pressing plate.

[0009] Further, a first cylinder assembly is provided at the tail ends of the second sealing plug, the third sealing plug, and the fourth sealing plug, which is used to drive the corresponding sealing plug to move towards the opening side of the aluminum casting. The second sealing plug, the third sealing plug, and the fourth sealing plug are all cylindrical structures, and the corresponding sealing sides are provided with rubber tips.

[0010] Further, first positioning rods are installed at the corresponding corners of the pressing plate. The support plate is provided with second positioning rods corresponding to the ends of the positioning rods. The free ends of the first positioning rods are provided with adjusting blocks. One end of the adjusting block is threadedly connected to the end of the first positioning rod. The other end of the adjusting block is provided with a positioning groove, and the free end of the second positioning rod is provided with a positioning protrusion.

[0011] Further, the first fixing assembly includes a first pressing rod. The tail of the first pressing rod is a guide post. A sleeve is fixed on the pressing plate for sleeving the guide post and performing telescopic cooperation. A spring is installed between the first pressing rod and the sleeve, and the spring is sleeved on the guide post.

[0012] Further, the second fixing assembly includes a second pressing rod. The pressing plate is correspondingly provided with a second cylinder assembly for driving the second pressing rod to press the aluminum casting.

[0013] The utility model has the following beneficial effects: The aluminum casting corresponding to the utility model is of an irregular shape and has multiple opening sides. When performing airtightness detection, the aluminum casting needs to be fixed, and then the corresponding single opening side can be positioned and sealed. Therefore, the fixing blocks installed on the support plate first position the whole aluminum casting, and then drive the pressing plate to press down. The fixing components on the pressing plate are corresponding to different positions of the aluminum casting. Usually, the fixing points correspond to the groove positions, and the fixing points are relatively scattered, which is convenient for multi-point positioning and fixing. And the positions of the grooves are convenient for the fixing components to position and hold stably. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below.

[0015] Figure 1 : Schematic structural diagram of the present utility model.

[0016] Figure 2 : Schematic structural diagram of the aluminum casting installation structure of the present utility model.

[0017] Figure 3 : Schematic structural diagram of the aluminum casting of the present utility model.

[0018] Figure 4 : Schematic structural diagram of the bottom of the aluminum casting of the present utility model.

[0019] In the attached drawings, the list of components represented by each reference numeral is as follows: aluminum casting 3, first opening side 31, second opening side 32, third opening side 33, fourth opening side 34, support plate 1, pressing plate 2, support block 4, groove body 41, second sealing plug 12, third sealing plug 13, fourth sealing plug 14, first cylinder assembly 11, rubber stud 15, first positioning rod 5, second positioning rod 52, adjusting block 51, first pressing rod 6, sleeve 61, spring 62, second pressing rod 7, second cylinder assembly 71. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] As Figures 1-4 shown: A detection tooling fixture for aluminum castings, corresponding to the bottom of the aluminum casting 3 with a first opening side 31, the side with a second opening side 32 and a third opening side 33, and the top with a fourth opening side 34. Each opening side has a pipeline connection corresponding to the inside of the aluminum casting. The opening side is used to connect the pipe externally.

[0022] It includes a support plate 1, and a pressing plate 2 is installed above the support plate 1. The support plate and the pressing plate are plate structures arranged parallel up and down. The plate body has round holes of various specifications for positioning with bolts. A support block 4 is fixed on the support surface of the support plate 1. The support block 4 has a groove body 41 for accommodating the aluminum casting 3. The first opening side 31 corresponding to the aluminum casting 3 coincides with the groove body 41. The bottom of the groove body 41 has an inflation hole. The position of the groove body coincides with the first opening side corresponding to the aluminum casting, and the shapes match, just wrapping the part of the first opening side corresponding to the aluminum casting, for limiting the installation position of the aluminum casting. The support plate 1 is provided with a second sealing plug 12 and a third sealing plug 13 for sealing the second opening side 32 and the third opening side 33 beside the support block 4; a fourth sealing plug 14 for sealing the fourth opening side 34 is installed on the lower side of the pressing plate 2;

[0023] The upper side of the pressing plate 2 has a driving component, which is not shown in the figure. In the normal state, it is driven by a cylinder, used to drive the pressing plate 2 to move towards the support plate 1, horizontally. The lower side of the pressing plate 2 has a first fixing component and a second fixing component for fixing the aluminum casting 3.

[0024] The aluminum casting corresponding to this utility model is of an irregular shape and has multiple open sides. When performing airtightness detection, the aluminum casting needs to be fixed, and then the single open side can be positioned and sealed accordingly. Therefore, the fixing blocks installed on the support plate first position the whole aluminum casting, and then drive the pressing plate to press down. The pressing plate corresponds to the fixing components at different positions of the aluminum casting. Usually, the fixing points correspond to the groove positions, and the fixing points are relatively scattered, facilitating multi-point positioning and fixing. The positions of the grooves facilitate the positioning and stable clamping of the fixing components.

[0025] After completing the clamping operation of the aluminum casting, install each sealing plug so that the other open sides corresponding to the aluminum casting can be accurately sealed. Finally, inflate through the inflation holes provided in the fixing blocks, and use the air pressure balance method to detect the airtightness of the workpiece.

[0026] The whole set of operations realizes an automated operation process. Only need to position and place the aluminum casting in the groove body of the fixing block, and programatically drive the pressing plate and the sealing plugs to complete clamping and sealing. Finally, perform inflation detection, deflate after the detection is completed, and then the airtightness detection of the casting can be quickly completed with higher efficiency.

[0027] As Figure 1 shown: At the ends of the second sealing plug 12, the third sealing plug 13 and the fourth sealing plug 14, there are all first cylinder components 11 for driving the corresponding sealing plugs to move towards the open sides of the aluminum casting 3. The first cylinder components corresponding to the second sealing plug and the third sealing plug are installed on the support plate and are supported and fixed by L-shaped support frames. The first cylinder component corresponding to the fourth sealing plug is fixed to the pressing plate to achieve the purpose of automatic sealing. The second sealing plug 12, the third sealing plug 13 and the fourth sealing plug 14 are all of cylindrical structures, and have rubber tips 15 on the corresponding sealing sides. When the first cylinder component drives the sealing plug to move, the rubber tip contacts and seals the corresponding open side of the aluminum casting. After the rubber tip is compressed, it deforms to improve the sealing performance.

[0028] As Figure 2 shown: At the corresponding corner positions of the pressing plate 2, there are all first positioning rods 5 installed. The support plate 1 has second positioning rods 52 corresponding to the ends of the positioning rods 5. The free ends of the first positioning rods 5 have adjusting blocks 51. One end of the adjusting block 51 is threadedly connected to the end of the first positioning rod 5. The other end of the adjusting block 51 has a positioning groove, and the free end of the second positioning rod 52 has a positioning protrusion for cooperating with the positioning groove. During the pressing down process of the pressing plate, positioning is carried out through the positioning rods, and at the same time, the pressing down degree of the pressing plate is limited, and the control is more accurate. The overall length of the first positioning rod can also be adjusted by rotating the adjusting block to adjust the limiting distance.

[0029] The first fixing component includes a first pressing rod 6. The tail of the first pressing rod 6 is a guide post. A sleeve 61 is fixed to the pressing plate for sleeving the guide post and performing telescopic cooperation. A spring 62 is installed between the first pressing rod 6 and the sleeve 61, and the spring 62 is sleeved on the guide post. The first pressing rod is used to abut against the aluminum casting to prevent the aluminum casting from shifting in position. After the first pressing rod contacts the aluminum casting, the spring is compressed to achieve elastic pressing.

[0030] The second fixing component includes a second pressing rod 7. The pressing plate 2 correspondingly has a second cylinder assembly 71 for driving the second pressing rod 7 to press the aluminum casting 3. The second cylinder assembly is fixed to the pressing plate through a fixing member, and the fixing member is an L-shaped fixing plate. The end of the second pressing rod is a tip positioning head for positioning a corresponding groove on the surface of the aluminum casting.

[0031] These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention.

Claims

1. An aluminum casting inspection fixture, having a first opening side (31) at the bottom corresponding to the aluminum casting (3), a second opening side (32) and a third opening side (33) at the side, and a fourth opening side (34) at the top, characterized in that: The invention comprises a support plate (1), a pressing plate (2) is installed above the support plate (1), a support block (4) is fixed on the support surface of the support plate (1), the support block (4) has a groove body (41) for accommodating an aluminum casting (3), a first opening side (31) corresponding to the aluminum casting (3) overlaps with the groove body (41), and a bottom of the groove body (41) has an inflation hole, and a second sealing plug (12) and a third sealing plug (13) for sealing a second opening side (32) and a third opening side (33) are installed on the side of the support plate (1) corresponding to the support block (4); and a fourth sealing plug (14) for sealing a fourth opening side (34) is installed on the lower side of the pressing plate (2); The upper side of the pressing plate (2) has a driving assembly for driving the pressing plate (2) to move toward the supporting plate (1), and the lower side of the pressing plate (2) has a first fixing assembly and a second fixing assembly for fixing the aluminum casting (3).

2. The aluminum casting inspection fixture according to claim 1, characterized in that: The tail ends of the second sealing plug (12), the third sealing plug (13) and the fourth sealing plug (14) are each provided with a first cylinder assembly (11) for driving the corresponding sealing plug to move towards the opening side of the aluminum casting (3).

3. The aluminum casting inspection fixture according to claim 2, characterized in that: The second sealing plug (12), the third sealing plug (13) and the fourth sealing plug (14) are all cylindrical structures, and have rubber column heads (15) on the corresponding sealing sides.

4. The aluminum casting inspection fixture according to claim 1, characterized in that: The pressing plate (2) is provided with a first positioning rod (5) at a position corresponding to the corner, the support plate (1) is provided with a second positioning rod (52) at the end corresponding to the positioning rod (5), the first positioning rod (5) is provided with an adjustment block (51) at the free end, one end of the adjustment block (51) is threadedly connected to the end of the first positioning rod (5), the other end of the adjustment block (51) is provided with a positioning groove, and the free end of the second positioning rod (52) is provided with a positioning protrusion.

5. The aluminum casting inspection fixture according to claim 1, characterized in that: The first fixing assembly comprises a first pressing rod (6), the tail of the first pressing rod (6) being a guide column, the pressing plate being fixed with a sleeve (61) for sleeve-engaging the guide column and telescopically cooperating therewith, a spring (62) being installed between the first pressing rod (6) and the sleeve (61), the spring (62) being sleeve-engaged on the guide column.

6. The aluminum casting inspection fixture according to claim 1, characterized in that: The second fixing assembly comprises a second pressing rod (7), and the pressing plate (2) correspondingly comprises a second cylinder assembly (71) for driving the second pressing rod (7) to press the aluminum casting (3).

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