A cooler liquid side air tightness detection device

Abstract

A cooler liquid-side airtightness detection device is provided, comprising a first end sealing mechanism, a second end sealing mechanism, a first positioning and clamping mechanism, and a second positioning and clamping mechanism; the first end sealing mechanism seals one end opening of a cooler tube, and the second end sealing mechanism seals the other end opening of the cooler tube; the first end sealing mechanism and the second end sealing mechanism are both provided with a main cylinder body, a sliding block is provided inside the main cylinder body, a guide cover is provided at the end of the main cylinder body, a sealing gasket is provided inside the guide cover, one end of the sliding block extends into the guide cover and presses the sealing gasket; the sliding block of the first end sealing mechanism or the second end sealing mechanism is provided with an airtightness detection interface, and the airtightness detection interface is connected to the docked cooler tube via the sealing gasket; the first positioning and clamping mechanism is used to position and clamp the first designated position of the cooler tube, and the second positioning and clamping mechanism is used to position and clamp the second designated position of the cooler tube. The present invention saves a lot of man-hours and improves production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of air tightness detection, and in particular relates to an air tightness detection device for the liquid side of a cooler. Background Art

[0002] An EGR cooler is installed in a vehicle's EGR system to cool recirculating exhaust gas. The liquid side of an EGR cooler typically refers to the pipes through which the coolant circulates. With the introduction of the China VI emission standards, the requirements for EGR coolers have become more stringent, particularly regarding their sealing properties.

[0003] One of the most critical processes in the cooler industry is airtightness testing. Since testing is performed underwater, the product must be air-dried and dried after each test. Failure to do so can easily lead to rust, which is not only time-consuming but also labor-intensive. Designing a technical solution that can perform liquid-side airtightness testing on EGR coolers without requiring underwater testing is crucial. Summary of the Invention

[0004] To this end, the present invention provides a cooler liquid side air tightness detection device to solve the problems of easy product rusting, long time consumption and heavy workload in traditional underwater operation detection.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a cooler liquid side airtightness detection device, comprising a first end sealing mechanism, a second end sealing mechanism, a first positioning and clamping mechanism, and a second positioning and clamping mechanism;

[0006] The first end sealing mechanism is used to seal the opening of one end of the cooler tube, and the second end sealing mechanism is used to seal the opening of the other end of the cooler tube; the first end sealing mechanism and the second end sealing mechanism are both provided with a main cylinder body, a sliding block is provided inside the main cylinder body, a guide cover is provided at the end of the main cylinder body, a sealing gasket is provided inside the guide cover, one end of the sliding block extends into the guide cover and presses the sealing gasket; the sliding block of the first end sealing mechanism or the second end sealing mechanism is provided with an airtight detection interface, and the airtight detection interface is connected to the docked cooler tube through the sealing gasket;

[0007] The first positioning and clamping mechanism is used to position and clamp a first designated position of the cooler tube, and the second positioning and clamping mechanism is used to position and clamp a second designated position of the cooler tube.

[0008] As a preferred embodiment of the cooler liquid side airtightness detection device, it further includes a bottom plate and a fixed plate; the four corners of the fixed plate are fixed above the bottom plate, an escape gap is formed between the bottom plate and the fixed plate, and an escape notch is formed on the side of the fixed plate;

[0009] The first end sealing mechanism is fixed to a corner of the upper end of the bottom plate through a first stroke adjustment mechanism, and the second end sealing mechanism is fixed to the diagonal area between the upper end of the bottom plate and the first end sealing mechanism through a second stroke adjustment mechanism;

[0010] The first positioning and clamping mechanism is fixed to one side of the upper end of the fixing plate, and the second positioning and clamping mechanism is fixed to the other side of the upper end of the fixing plate.

[0011] As a preferred solution of the cooler liquid side airtightness detection device, the first stroke adjustment mechanism includes a first stroke adjustment cylinder, a vertical plate and a first transfer rod;

[0012] The first stroke adjusting cylinder is located in the avoidance gap, the driving part of the first stroke adjusting cylinder is connected to the lower part of the vertical plate, the upper part of the vertical plate passes through the avoidance gap, and the upper part of the vertical plate is connected to the main cylinder body of the first end sealing mechanism through the first connecting rod.

[0013] As a preferred solution of the cooler liquid side airtightness detection device, the sliding block of the first end sealing mechanism is provided with an airtightness detection interface, and the vertical plate is provided with a ventilation hole at a position corresponding to the airtightness detection interface of the first end sealing mechanism.

[0014] As a preferred embodiment of the cooler liquid side air tightness detection device, the second stroke adjustment mechanism includes a second stroke adjustment cylinder, a mounting seat, a column, an adapter seat and a second adapter rod;

[0015] The second stroke adjusting cylinder is connected to the mounting seat, the mounting seat is connected to the upper end of the column, and the lower end of the column is connected to the base plate; the driving rod of the second stroke adjusting cylinder passes through the mounting seat and is connected to the adapter seat, and the adapter seat is connected to the main cylinder body of the second end sealing mechanism through the second adapter rod.

[0016] As a preferred solution of the cooler liquid side airtightness detection device, the area of ​​the fixed plate is smaller than the area of ​​the bottom plate, and the four side edges of the bottom plate extend beyond the four side edges of the fixed plate;

[0017] The second end sealing mechanism is positioned higher than the first end sealing mechanism.

[0018] As a preferred embodiment of the cooler liquid side airtightness detection device, the edge of the sliding block is provided with a first sealing groove and a second sealing groove, the interior of the first sealing groove is filled with a first sealing ring, and the first sealing ring contacts the inner wall of the main cylinder body; the interior of the second sealing groove is filled with a second sealing ring, and the second sealing ring contacts the inner wall of the main cylinder body;

[0019] The main cylinder is provided with a driving gas inlet, and the driving gas inlet is located between the first sealing ring and the second sealing ring;

[0020] The compressed gas entering from the driving gas inlet pushes the sliding block to deform the sealing gasket, and the deformed sealing gasket hugs the end opening of the cooler tube.

[0021] As a preferred solution of the cooler liquid side airtightness detection device, the first positioning and clamping mechanism includes a first clamping cylinder, a first fixed pressure plate, a first product support block and a first product positioning pin;

[0022] The bottom of the first clamping cylinder is connected to the fixed plate, and the top of the driving rod of the first clamping cylinder and one end of the first fixed pressure plate are hingedly connected by a pin shaft; the bottom of the first product support block is connected to the fixed plate, and the first product positioning pin is set at the top of the first product support block;

[0023] A first protrusion is formed on one side of the first product supporting block close to the first clamping cylinder, and a middle position of the first fixed pressing plate is hinged to the first protrusion through a first ear plate using a pin.

[0024] As a preferred solution of the cooler liquid side airtightness detection device, the second positioning and clamping mechanism includes a second clamping cylinder, a second fixed pressure plate, a second product support block and a second product positioning pin;

[0025] The bottom of the second clamping cylinder is connected to the fixed plate, and the top of the driving rod of the second clamping cylinder and one end of the second fixed pressure plate are hingedly connected by a pin shaft; the bottom of the second product support block is connected to the fixed plate, and the second product positioning pin is set at the top of the second product support block;

[0026] A second protrusion is formed on one side of the second product supporting block close to the second clamping cylinder, and a middle position of the second fixed pressing plate is hinged to the second protrusion through a second ear plate using a pin.

[0027] As a preferred solution for the cooler liquid side air tightness detection device, a sensor for detecting whether the product is installed in place is also provided at the upper end of the fixing plate.

[0028] The beneficial effects of the present invention are as follows: a first end sealing mechanism, a second end sealing mechanism, a first positioning clamping mechanism and a second positioning clamping mechanism are provided; the first end sealing mechanism is used to seal the opening of one end of the cooler tube, and the second end sealing mechanism is used to seal the opening of the other end of the cooler tube; the first end sealing mechanism and the second end sealing mechanism are both provided with a main cylinder body, a sliding block is provided inside the main cylinder body, a guide cover is provided at the end of the main cylinder body, a sealing gasket is provided inside the guide cover, one end of the sliding block extends into the guide cover and presses the sealing gasket; the sliding block of the first end sealing mechanism or the second end sealing mechanism is provided with an airtight detection interface, and the airtight detection interface is connected to the docked cooler tube through the sealing gasket; the first positioning clamping mechanism is used to position and clamp the first designated position of the cooler tube, and the second positioning clamping mechanism is used to position and clamp the second designated position of the cooler tube. The present invention saves a lot of work hours, improves production efficiency, prevents rust on products, ensures product quality, and saves rework hours. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of a cooler liquid side air tightness detection device provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the three-dimensional structure of the cooler liquid side air tightness detection device provided by an embodiment of the present invention from another perspective;

[0033] Figure 3 Schematic diagram of the first positioning and clamping mechanism and the second positioning and clamping mechanism in the cooler liquid side air tightness detection device provided by an embodiment of the present invention;

[0034] Figure 4 Schematic diagram of the first end sealing mechanism in the cooler liquid side air tightness detection device provided by an embodiment of the present invention.

[0035] In the figure, 1, first end sealing mechanism; 2, second end sealing mechanism; 3, first positioning and clamping mechanism; 4, second positioning and clamping mechanism; 5, main cylinder body; 6, sliding block; 7, guide cover; 8, sealing gasket; 9, airtightness detection interface; 10, bottom plate; 11, fixing plate; 12, avoidance gap; 13, avoidance gap; 14, first stroke adjustment mechanism; 15, second stroke adjustment mechanism; 16, first stroke adjustment cylinder; 17, vertical plate; 18, first transfer rod; 19, vent hole; 20, second stroke adjustment cylinder; 2 1. Mounting seat; 22. Column; 23. Adapter seat; 24. Second adapter rod; 25. First sealing ring; 26. Second sealing ring; 27. Driving gas inlet; 28. First clamping cylinder; 29. ​​First fixed pressure plate; 30. First product support block; 31. First product positioning pin; 32. First protrusion; 33. First ear plate; 34. Second clamping cylinder; 35. Second fixed pressure plate; 36. Second product support block; 37. Second product positioning pin; 38. Second protrusion; 39. Second ear plate; 40. Sensor. DETAILED DESCRIPTION

[0036] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0037] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , an embodiment of the present invention provides a cooler liquid side airtightness detection device, comprising a first end sealing mechanism 1, a second end sealing mechanism 2, a first positioning and clamping mechanism 3 and a second positioning and clamping mechanism 4;

[0038] Among them, the first end sealing mechanism 1 is used to seal the opening of one end of the cooler tube, and the second end sealing mechanism 2 is used to seal the opening of the other end of the cooler tube; the first end sealing mechanism 1 and the second end sealing mechanism 2 are both provided with a main cylinder body 5, a sliding block 6 is provided inside the main cylinder body 5, and a guide cover 7 is provided at the end of the main cylinder body 5. A sealing gasket 8 is provided inside the guide cover 7, and one end of the sliding block 6 extends into the guide cover 7 and presses the sealing gasket 8; the sliding block 6 of the first end sealing mechanism 1 or the second end sealing mechanism 2 is provided with an airtight detection interface 9, and the airtight detection interface 9 is connected to the docked cooler tube through the sealing gasket 8;

[0039] The first positioning and clamping mechanism 3 is used to position and clamp the first designated position of the cooler tube, and the second positioning and clamping mechanism 4 is used to position and clamp the second designated position of the cooler tube.

[0040] In this embodiment, it also includes a base plate 10 and a fixed plate 11; the four corners of the fixed plate 11 are fixed above the base plate 10, an avoidance gap 12 is formed between the base plate 10 and the fixed plate 11, and an avoidance notch 13 is formed on the side of the fixed plate 11; the first end sealing mechanism 1 is fixed to a corner of the upper end of the base plate 10 through a first stroke adjustment mechanism 14, and the second end sealing mechanism 2 is fixed to the diagonal area between the upper end of the base plate 10 and the first end sealing mechanism 1 through a second stroke adjustment mechanism 15; the first positioning and clamping mechanism 3 is fixed to one side of the upper end of the fixed plate 11, and the second positioning and clamping mechanism 4 is fixed to the other side of the upper end of the fixed plate 11.

[0041] Specifically, the base plate 10 serves to mount the first and second end sealing mechanisms 1 and 2, while the fixed plate 11 serves to mount the first positioning and clamping mechanisms 3 and the second positioning and clamping mechanisms 4. The clearance gap 12 and the clearance notch 13 serve as a clearance for the first stroke adjustment mechanism 14, enabling the first stroke adjustment mechanism 14 to control the movement of the first end sealing mechanism 1 and thereby seal the opening at one end of the cooler tube. Furthermore, the first and second end sealing mechanisms 1 and 2 are arranged diagonally, while the first and second positioning and clamping mechanisms 3 and 4 are located on either side of the fixed plate 11 to secure the cooler tube.

[0042] In this embodiment, the first stroke adjustment mechanism 14 includes a first stroke adjustment cylinder 16, a vertical plate 17 and a first transfer rod 18; the first stroke adjustment cylinder 16 is located in the avoidance gap 12, the driving part of the first stroke adjustment cylinder 16 is connected to the lower part of the vertical plate 17, the upper part of the vertical plate 17 passes through the avoidance gap 13, and the upper part of the vertical plate 17 is connected to the main cylinder body 5 of the first end sealing mechanism 1 through the first transfer rod 18.

[0043] Specifically, the vertical plate 17 serves as a connection between the first stroke adjustment cylinder 16 and the first transfer rod 18, wherein the first stroke adjustment cylinder 16 is distributed in the avoidance gap 12 and can drive the vertical plate 17, and the vertical plate 17 can drive the main cylinder body 5 of the first end sealing mechanism 1 through the first transfer rod 18, thereby enabling the main cylinder body 5 of the first end sealing mechanism 1 to seal the end of the cooler pipe.

[0044] In this embodiment, the sliding block 6 of the first-end sealing mechanism 1 is provided with an airtightness detection interface 9, and the vertical plate 17 is provided with a vent hole 19 at a position corresponding to the airtightness detection interface 9 of the first-end sealing mechanism 1. The vent pipe of the airtightness detector is connected to the airtightness detection interface 9 through the vent hole 19. Because both ends of the cooler pipe are sealed by the first-end sealing mechanism 1 and the second-end sealing mechanism 2, the data displayed on the airtightness detector can be used to determine whether the EGR cooler cooler pipe is leaking.

[0045] In this embodiment, the second stroke adjustment mechanism 15 includes a second stroke adjustment cylinder 20, a mounting seat 21, a column 22, an adapter seat 23 and a second adapter rod 24; the second stroke adjustment cylinder 20 is connected to the mounting seat 21, the mounting seat 21 is connected to the upper end of the column 22, and the lower end of the column 22 is connected to the base plate 10; the driving rod of the second stroke adjustment cylinder 20 passes through the mounting seat 21 and is connected to the adapter seat 23, and the adapter seat 23 is connected to the main cylinder body 5 of the second end sealing mechanism 2 through the second adapter rod 24.

[0046] Specifically, the mounting seat 21 serves to connect the second stroke adjusting cylinder 20 and the column 22, wherein the mounting seat 21 is connected to the base plate 10 through the column 22 to lift the second stroke adjusting cylinder 20, and the driving rod of the second stroke adjusting cylinder 20 drives the second transfer rod 24 through the transfer seat 23, and the second transfer rod 24 can drive the main cylinder body 5 of the second end sealing mechanism 2, thereby enabling the main cylinder body 5 of the second end sealing mechanism 2 to seal the other end of the cooler pipe.

[0047] In this embodiment, the area of ​​the fixed plate 11 is smaller than that of the base plate 10, and the four side edges of the base plate 10 extend beyond the four side edges of the fixed plate 11. The second end sealing mechanism 2 is positioned higher than the first end sealing mechanism 1. This is to ensure that the first end sealing mechanism 1, the second end sealing mechanism 2, the first positioning and clamping mechanism 3, and the second positioning and clamping mechanism 4 can match the shape of the cooler tube. Under the positioning and clamping of the first and second positioning and clamping mechanisms 3 and 4, the first end sealing mechanism 1 and the second end sealing mechanism 2 respectively connect the two ends of the cooler tube.

[0048] In this embodiment, a first sealing groove and a second sealing groove are provided on the edge of the sliding block 6. The interior of the first sealing groove is filled with a first sealing ring 25, and the first sealing ring 25 contacts the inner wall of the main cylinder body 5; the interior of the second sealing groove is filled with a second sealing ring 26, and the second sealing ring 26 contacts the inner wall of the main cylinder body 5; the main cylinder body 5 is provided with a driving gas inlet 27, and the driving gas inlet 27 is located between the first sealing ring 25 and the second sealing ring 26; the compressed gas entering the driving gas inlet 27 pushes the sliding block 6 to deform the sealing gasket 8, and the deformed sealing gasket 8 tightly hugs the end opening of the cooler tube.

[0049] Specifically, due to the location of the first and second sealing grooves and the driving gas inlet 27, the compressed gas entering through the driving gas inlet 27 can only act on the surface of the sliding block 6, thereby pushing the sliding block 6 to deform the sealing gasket 8, which then tightly embraces the end opening of the cooler tube. The airflow entering the cooler tube through the airtightness detection interface 9 can achieve the airtightness detection effect.

[0050] In this embodiment, the first positioning and clamping mechanism 3 includes a first clamping cylinder 28, a first fixed pressure plate 29, a first product support block 30 and a first product positioning pin 31; the bottom of the first clamping cylinder 28 is connected to the fixed plate 11, and the top of the driving rod of the first clamping cylinder 28 and one end of the first fixed pressure plate 29 are hinged by a pin; the bottom of the first product support block 30 is connected to the fixed plate 11, and the first product positioning pin 31 is arranged at the top of the first product support block 30; a first protrusion 32 is formed on the side of the first product support block 30 close to the first clamping cylinder 28, and the middle position of the first fixed pressure plate 29 is hinged by a pin through a first ear plate 33 and the first protrusion 32. The second positioning and clamping mechanism 4 includes a second clamping cylinder 34, a second fixed pressure plate 35, a second product support block 36 and a second product positioning pin 37; the bottom of the second clamping cylinder 34 is connected to the fixed plate 11, and the top of the driving rod of the second clamping cylinder 34 and one end of the second fixed pressure plate 35 are hinged by a pin; the bottom of the second product support block 36 is connected to the fixed plate 11, and the second product positioning pin 37 is arranged at the top of the second product support block 36; a second protrusion 38 is formed on the side of the second product support block 36 close to the second clamping cylinder 34, and the middle position of the second fixed pressure plate 35 is hinged by a pin through a second ear plate 39 and the second protrusion 38.

[0051] Specifically, because the top of the driving rod of the first clamping cylinder 28 is hinged to the first fixed plate 29, and the middle position of the first fixed plate 29 is hinged via a first lug 33 and a first protrusion 32, when the first clamping cylinder 28 drives one end of the first fixed plate 29 upward, the other end of the first fixed plate 29 moves downward, thereby compressing the specified position of the cooler tube fixed to the first product positioning pin 31. Similarly, because the top of the driving rod of the second clamping cylinder 34 is hinged to the second fixed plate 35, and the middle position of the second fixed plate 35 is hinged via a second lug 39 and a second protrusion 38, when the second clamping cylinder 34 drives one end of the second fixed plate 35 upward, the other end of the second fixed plate 35 moves downward, thereby compressing the specified position of the cooler tube fixed to the second product positioning pin 37. The first positioning and clamping mechanism 3 and the second positioning and clamping mechanism 4 perform positioning and clamping from both sides of the cooler tube to ensure stability during the air tightness detection process.

[0052] In this embodiment, a sensor 40 for detecting whether the product is installed in place is further provided at the upper end of the fixing plate 11. The sensor 40 detects whether the product is installed in place and controls the operation of the first end sealing mechanism 1, the second end sealing mechanism 2, the first positioning and clamping mechanism 3, and the second positioning and clamping mechanism 4.

[0053] To sum up, the present invention is provided with a first end sealing mechanism 1, a second end sealing mechanism 2, a first positioning and clamping mechanism 3 and a second positioning and clamping mechanism 4; the first end sealing mechanism 1 is used to seal the opening at one end of the cooler tube, and the second end sealing mechanism 2 is used to seal the opening at the other end of the cooler tube; the first end sealing mechanism 1 and the second end sealing mechanism 2 are both provided with a main cylinder body 5, a sliding block 6 is provided inside the main cylinder body 5, a guide cover 7 is provided at the end of the main cylinder body 5, a sealing gasket 8 is provided inside the guide cover 7, one end of the sliding block 6 extends into the guide cover 7 and presses the sealing gasket 8; the sliding block 6 of the first end sealing mechanism 1 or the second end sealing mechanism 2 is provided with an airtight detection interface 9, and the airtight detection interface 9 is connected to the docked cooler tube through the sealing gasket 8; the first positioning and clamping mechanism 3 is used to position and clamp the first designated position of the cooler tube, and the second positioning and clamping mechanism 4 is used to position and clamp the second designated position of the cooler tube. The base plate 10 serves as the mounting base for the first and second end sealing mechanisms 1 and 2. The fixed plate 11 serves as the mounting base for the first positioning and clamping mechanisms 3 and 4. The clearance gap 12 and clearance notch 13 provide clearance for the first stroke adjustment mechanism 14, enabling the first stroke adjustment mechanism 14 to control the movement of the first end sealing mechanism 1, thereby sealing the opening at one end of the cooler tube. The first and second end sealing mechanisms 1 and 2 are arranged diagonally, while the first and second positioning and clamping mechanisms 3 and 4 are located on either side of the fixed plate 11 to secure the cooler tube. The vertical plate 17 connects the first stroke adjustment cylinder 16 and the first adapter rod 18. The first stroke adjustment cylinder 16, located in the clearance gap 12, drives the vertical plate 17. The vertical plate 17, via the first adapter rod 18, drives the main cylinder 5 of the first end sealing mechanism 1, thereby sealing the end of the cooler tube. The airtightness tester's vent pipe is connected to the airtightness test interface 9 via the vent pipe hole 19. Since both ends of the cooler pipe are sealed by the first-end sealing mechanism 1 and the second-end sealing mechanism 2, the EGR cooler's cooler pipe leaks can be determined by observing the data on the airtightness tester. Mounting seat 21 serves as a connection between the second stroke adjustment cylinder 20 and the column 22. Mounting seat 21 is connected to base plate 10 via column 22, elevating the second stroke adjustment cylinder 20. The drive rod of the second stroke adjustment cylinder 20 drives the second adapter rod 24 via adapter seat 23. The second adapter rod 24 drives the main cylinder 5 of the second end sealing mechanism 2, thereby sealing the other end of the cooler pipe. Due to the positional distribution of the first and second sealing grooves and the driving gas inlet 27, the compressed gas entering through the driving gas inlet 27 can only act on the surface of the sliding block 6, pushing the sliding block 6 to deform the sealing gasket 8, which then tightens around the end opening of the cooler pipe.The airflow entering the cooler tube from the airtightness detection interface 9 can achieve an airtightness detection effect. Because the top of the driving rod of the first clamping cylinder 28 is hinged to the first fixed plate 29, and the middle position of the first fixed plate 29 is hinged via the first ear plate 33 and the first protrusion 32, when the first clamping cylinder 28 drives one end of the first fixed plate 29 upward, the other end of the first fixed plate 29 moves downward, thereby compressing the specified position of the cooler tube fixed to the first product positioning pin 31. Similarly, because the top of the driving rod of the second clamping cylinder 34 is hinged to the second fixed plate 35, and the middle position of the second fixed plate 35 is hinged via the second ear plate 39 and the second protrusion 38, when the second clamping cylinder 34 drives one end of the second fixed plate 35 upward, the other end of the second fixed plate 35 moves downward, thereby compressing the specified position of the cooler tube fixed to the second product positioning pin 37. The first positioning and clamping mechanism 3 and the second positioning and clamping mechanism 4 perform positioning and clamping on both sides of the cooler tube to ensure stability during the airtightness test. This invention saves a lot of man-hours, improves production efficiency, prevents rust on the product, ensures product quality, and saves repair man-hours.

[0054] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A cooler liquid side airtightness detection device, characterized in that: It comprises a first end sealing mechanism (1), a second end sealing mechanism (2), a first positioning and clamping mechanism (3) and a second positioning and clamping mechanism (4); The first end sealing mechanism (1) is used to seal the opening of one end of the cooler tube, and the second end sealing mechanism (2) is used to seal the opening of the other end of the cooler tube; the first end sealing mechanism (1) and the second end sealing mechanism (2) are both provided with a main cylinder (5), a sliding block (6) is provided inside the main cylinder (5), a guide cover (7) is provided at the end of the main cylinder (5), a sealing gasket (8) is provided inside the guide cover (7), one end of the sliding block (6) extends into the guide cover (7) and presses the sealing gasket (8); the sliding block (6) of the first end sealing mechanism (1) or the second end sealing mechanism (2) is provided with an airtight detection interface (9), and the airtight detection interface (9) is connected to the docked cooler tube through the sealing gasket (8); The first positioning and clamping mechanism (3) is used to position and clamp a first designated position of the cooler tube, and the second positioning and clamping mechanism (4) is used to position and clamp a second designated position of the cooler tube; It also includes a bottom plate (10) and a fixed plate (11); the four corners of the fixed plate (11) are fixed above the bottom plate (10); an escape gap (12) is formed between the bottom plate (10) and the fixed plate (11); and an escape notch (13) is formed on the side of the fixed plate (11); The first end sealing mechanism (1) is fixed to a corner of the upper end of the base plate (10) via a first stroke adjustment mechanism (14), and the second end sealing mechanism (2) is fixed to a diagonal area between the upper end of the base plate (10) and the first end sealing mechanism (1) via a second stroke adjustment mechanism (15); The first positioning and clamping mechanism (3) is fixed to one side of the upper end of the fixing plate (11), and the second positioning and clamping mechanism (4) is fixed to the other side of the upper end of the fixing plate (11); The first stroke adjustment mechanism (14) includes a first stroke adjustment cylinder (16), a vertical plate (17) and a first transfer rod (18); The first stroke adjustment cylinder (16) is located in the avoidance gap (12), a driving portion of the first stroke adjustment cylinder (16) is connected to the lower portion of the vertical plate (17), an upper portion of the vertical plate (17) passes through the avoidance gap (13), and the upper portion of the vertical plate (17) is connected to the main cylinder body (5) of the first end sealing mechanism (1) via the first transfer rod (18); The second stroke adjustment mechanism (15) comprises a second stroke adjustment cylinder (20), a mounting seat (21), a column (22), an adapter seat (23) and a second adapter rod (24); The second stroke regulating cylinder (20) is connected to the mounting seat (21), the mounting seat (21) is connected to the upper end of the column (22), and the lower end of the column (22) is connected to the base plate (10); the driving rod of the second stroke regulating cylinder (20) passes through the mounting seat (21) and is connected to the adapter seat (23), and the adapter seat (23) is connected to the main cylinder body (5) of the second end sealing mechanism (2) through the second adapter rod (24).

2. A cooler liquid side airtightness detection device according to claim 1, characterized in that: The sliding block (6) of the first end sealing mechanism (1) is provided with the airtight detection interface (9), and the vertical plate (17) is provided with a vent hole (19) at a position corresponding to the airtight detection interface (9) of the first end sealing mechanism (1).

3. The cooler liquid side airtightness detection device according to claim 1, characterized in that: The area of ​​the fixing plate (11) is smaller than the area of ​​the bottom plate (10), and the four side edges of the bottom plate (10) exceed the four side edges of the fixing plate (11); The second end sealing mechanism (2) is positioned higher than the first end sealing mechanism (1).

4. A cooler liquid side airtightness detection device according to claim 3, characterized in that: The edge of the sliding block (6) is provided with a first sealing groove and a second sealing groove, the interior of the first sealing groove is filled with a first sealing ring (25), and the first sealing ring (25) contacts the inner wall of the main cylinder (5); the interior of the second sealing groove is filled with a second sealing ring (26), and the second sealing ring (26) contacts the inner wall of the main cylinder (5); The main cylinder (5) is provided with a driving gas inlet (27), and the driving gas inlet (27) is located between the first sealing ring (25) and the second sealing ring (26); The compressed gas entering the driving gas inlet (27) pushes the sliding block (6) to deform the sealing gasket (8), and the deformed sealing gasket (8) tightly embraces the end opening of the cooler pipe.

5. A cooler liquid side airtightness detection device according to claim 4, characterized in that: The first positioning and clamping mechanism (3) comprises a first clamping cylinder (28), a first fixed pressing plate (29), a first product supporting block (30) and a first product positioning pin (31); The bottom of the first clamping cylinder (28) is connected to the fixed plate (11), and the top of the driving rod of the first clamping cylinder (28) and one end of the first fixed pressure plate (29) are hinged via a pin shaft; the bottom of the first product support block (30) is connected to the fixed plate (11), and the first product positioning pin (31) is provided at the top end of the first product support block (30); A first protrusion (32) is formed on one side of the first product support block (30) close to the first clamping cylinder (28), and the middle position of the first fixed pressure plate (29) is hinged to the first protrusion (32) through a first ear plate (33) using a pin.

6. A cooler liquid side airtightness detection device according to claim 5, characterized in that: The second positioning and clamping mechanism (4) comprises a second clamping cylinder (34), a second fixed pressing plate (35), a second product supporting block (36) and a second product positioning pin (37); The bottom of the second clamping cylinder (34) is connected to the fixed plate (11), and the top of the driving rod of the second clamping cylinder (34) and one end of the second fixed pressure plate (35) are hinged through a pin shaft; the bottom of the second product support block (36) is connected to the fixed plate (11), and the second product positioning pin (37) is provided on the top of the second product support block (36); A second protrusion (38) is formed on one side of the second product support block (36) close to the second clamping cylinder (34), and the middle position of the second fixed pressure plate (35) is hinged to the second protrusion (38) through a second ear plate (39) using a pin.

7. A cooler liquid side airtightness detection device according to claim 6, characterized in that: The upper end of the fixing plate (11) is also provided with a sensor (40) for detecting whether the product is installed in place.

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