Leak detector with limiting structure

Abstract

The utility model discloses a leak detector with limiting structure relates to airtight detection tool technical field, including lower limit board, and the lower limit board top surface four corners are vertically installed with positioning rod, and the lower limit board upper installation has the upper limit board of cooperation positioning rod sliding, and the upper limit board top surface rear end one side is installed with the air path integrated module, and is installed with airtight detection subassembly between the upper limit board and the lower limit board, the utility model discloses through the cooperation of positioning assembly and buffer structure, sealing part, realize accurate location and flexible compression function, not only can in the detection stage through the sliding cooperation of positioning rod and upper limit board and lower limit board, guarantee the moving accuracy of airtight detection subassembly, need not repeatedly calibrating to complete positioning, shorten the detection preparation time, still can through the spring of guide rod outside offsetting the hard impact force when the locating block down pressure, avoid the surface of the article to be detected to appear plastic damage, improve the detection qualified rate.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing equipment, and in particular to a leak detector with a limiting structure. Background Technology

[0002] In industrial production, the airtightness testing of various components is a key link in ensuring product quality and safe use. As the core equipment for airtightness testing, the leak detector's testing accuracy, efficiency, and protective effect on the tested object directly affect the overall production process and product qualification rate. In terms of positioning, existing leak detectors mostly use simple fixed connections or sliding fit structures for their positioning components. The sliding accuracy between the upper and lower limit components is insufficient, and the airtightness testing components are prone to displacement during movement. This requires repeated calibration by staff to ensure accurate positioning, significantly extending the test preparation time and reducing overall testing efficiency. Furthermore, in the clamping process of the object to be tested, existing equipment mostly uses rigid clamping methods, lacking an effective buffer structure. The hard impact force of the positioning block on the object during clamping cannot be offset, easily leading to irreversible plastic damage to the surface of the object to be tested. This is especially true for objects with softer materials or high surface precision requirements, resulting in a high damage rate and seriously affecting the pass rate. In terms of sealing environment construction, existing leak detectors do not have a dedicated sealing positioning structure. After the object to be tested is placed, air pressure leakage is easily caused during the air supply process due to the poor seal between the object and the placement surface, leading to distorted test data and making it impossible to accurately determine the airtightness performance of the object. Therefore, the above problems need to be improved. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a leak detector with a limiting structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a leak detector with a limiting structure, comprising a lower limiting plate, wherein positioning rods are vertically installed at the four corners of the top surface of the lower limiting plate, and an upper limiting plate that slides in coordination with the positioning rods is installed above the lower limiting plate, an air circuit integrated module is installed on one side of the rear end of the top surface of the upper limiting plate, and an air tightness detection component is installed between the upper limiting plate and the lower limiting plate.

[0005] Preferably, the airtightness detection component includes a self-locking hydraulic cylinder vertically mounted on the top surface of the upper limit plate, the output shaft of the hydraulic cylinder passing through the upper limit plate, and a positioning block sleeved on the output shaft of the hydraulic cylinder.

[0006] Preferably, the top surface of the positioning block is provided with guide holes on both sides, the top surface of the upper limit plate is provided with sliding holes that match the guide holes, and the top surface of the upper limit plate is slidably connected with a limiting rod that matches the guide holes and the sliding holes.

[0007] Preferably, the top surface of the positioning block has multiple positioning holes equidistantly provided, and a guide rod that matches the positioning hole is slidably connected inside the positioning block. An abutment groove is provided on the outer side of the guide rod, and a spring that matches the abutment groove is sleeved on the guide rod. The two ends of the spring abut against the bottom surface of the positioning block and the bottom surface inside the abutment groove, respectively.

[0008] Preferably, a positioning platform for cooperating with the positioning block is installed in the middle of the top surface of the lower limit plate, and an installation platform is installed on one side of the rear end of the top surface of the lower limit plate. A cylinder is installed above the installation platform, and the output shaft of the cylinder is higher than the top surface of the positioning platform.

[0009] Preferably, a placement groove is provided in the middle of the top surface of the positioning platform, a sealing groove is provided around the placement groove on the outside of the placement groove, a rubber ring is installed in the sealing groove, and an air supply groove is provided in the bottom surface of the placement groove, which penetrates the rear end of the positioning platform, and the cross-section of the air supply groove is L-shaped.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves precise positioning and flexible clamping functions through the cooperation of positioning components, buffer structures, and sealing components; not only can the sliding cooperation between the positioning rod and the upper and lower limit plates ensure the movement accuracy of the airtightness detection component during the detection stage, positioning can be completed without repeated calibration, shortening the detection preparation time, but the spring on the outside of the guide rod can also offset the hard impact force when the positioning block is pressed down, avoiding plastic damage to the surface of the object to be tested and improving the detection pass rate; during the placement stage, the placement groove of the positioning platform and the surrounding rubber ring quickly form a sealed detection environment to prevent air pressure leakage from affecting the detection results during air supply; in the clamping stage, the positioning block is driven to move down by a hydraulic cylinder to adapt to objects of different thicknesses, without the need to adjust special fixtures. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a partial sectional view of the overall structure proposed in this utility model; Figure 3 The present utility model proposes Figure 1 Enlarged diagram of part A in the middle; Figure 4 The present utility model proposes Figure 2 Enlarged schematic diagram of part B in the middle.

[0012] The numbers in the diagram are: 1. Lower limit plate; 2. Positioning rod; 3. Upper limit plate; 4. Pneumatic circuit integrated module; 5. Hydraulic cylinder; 6. Positioning block; 7. Guide rod; 8. Spring; 9. Positioning platform; 10. Mounting platform; 11. Cylinder; 12. Placement slot; 13. Rubber ring. Detailed Implementation

[0013] 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.

[0014] Example: See Figures 1 to 4 This utility model discloses a leak detection machine with a limiting structure, comprising a lower limiting plate 1, through which positioning rods 2 are connected for easy connection with external welding processes; positioning rods 2 are vertically installed at the four corners of the top surface of the lower limiting plate 1, through which upper limiting plate 3 is connected for easy connection with external welding processes; and an upper limiting plate 3 is installed above the lower limiting plate 1 to slide in coordination with the positioning rods 2, through which an air circuit integrated module 4 and a hydraulic cylinder 5 are installed for easy connection with external fixing components; an air circuit integrated module 4 is installed on one side of the rear end of the top surface of the upper limiting plate 3, through which the air circuit integrated module 4 is connected to an external air pump as the control module of the air circuit of the entire equipment; and an airtightness detection component is installed between the upper limiting plate 3 and the lower limiting plate 1, the airtightness detection component including a self-locking hydraulic cylinder 5 vertically installed on the top surface of the upper limiting plate 3, through which the hydraulic cylinder 5 is connected to a positioning block 6 via an external connection component and drives the positioning block 6. The hydraulic cylinder 5 moves up and down; the output shaft of the hydraulic cylinder 5 passes through the upper limit plate 3, and the output shaft of the hydraulic cylinder 5 is sleeved with a positioning block 6. The positioning block 6 facilitates the subsequent sliding connection of the guide rod 7; the top surface of the positioning block 6 has guide holes on both sides, the top surface of the upper limit plate 3 has sliding holes that match the guide holes, and the top surface of the upper limit plate 3 is slidably connected with a limiting rod that matches the guide holes and the sliding holes. The top surface of the positioning block 6 has multiple positioning holes equidistantly, and the positioning block 6 is slidably connected with a guide rod 7 that matches the positioning holes. The guide rod 7 facilitates the connection of the spring 8 with the abutment groove and provides flexible compression when abutting the object to be tested; the outer side of the guide rod 7 has an abutment groove, and the guide rod 7 is sleeved with a spring 8 that matches the abutment groove. The two ends of the spring 8 abut against the bottom surface of the positioning block 6 and the bottom surface of the abutment groove, respectively. The spring 8 helps to prevent the subsequent hard compression of the object to be tested by the guide rod 7, which would cause irreversible plastic damage to the surface of the object to be tested.

[0015] In this invention, a positioning platform 9, which mates with a positioning block 6, is installed at the center of the top surface of the lower limit plate 1. The positioning platform 9 facilitates the opening of a placement slot 12, a sealing slot, and an air supply slot via an external grooving assembly. The positioning platform 9 also serves as a platform for placing the object to be inspected. Furthermore, an installation platform 10 is installed on one side of the rear end of the top surface of the lower limit plate 1. The installation platform 10 facilitates the subsequent installation of a cylinder 11 via an external positioning assembly. A cylinder 11 is installed above the installation platform 10, with its output shaft higher than the top surface of the positioning platform 9. The cylinder 11 facilitates pushing the tested object after subsequent testing; a placement groove 12 is provided in the middle of the top surface of the positioning platform 9, which facilitates providing an air pressure testing environment for the object to be tested; a sealing groove is provided around the placement groove 12, and a rubber ring 13 is installed in the sealing groove to ensure the initial sealing between the object to be tested and the placement groove 12; and an air supply groove is provided on the bottom surface of the placement groove 12, which penetrates the rear end of the positioning platform 9, and the cross-section of the air supply groove is L-shaped.

[0016] Working principle: When using this utility model, the operator places the entire device on the designed base surface through the lower limit plate 1, detects the connection between the positioning rod 2 and the upper limit plate 3, and then connects it to the air circuit integrated module 4, cylinder 11 and air supply groove through the external air pipe, the signal line and power line are connected to the hydraulic cylinder 5, the signal line is connected to the external control system, and the device is powered on after the connection is completed. After the equipment is powered on, the operator uses the external control system to supply air to the air supply tank through the air pipe via the external air pump, and checks whether the pipeline is connected. Then, the operator places the object to be tested on the placement slot 12 opened on the top surface of the positioning platform 9. At this time, the object to be tested needs to be covered with the rubber ring 13. Then, the external control system starts the hydraulic cylinder 5 installed on the top surface of the upper limit plate 3 to move downward. The hydraulic cylinder 5 will drive the positioning block 6 to move downward. During the downward movement of the positioning block 6, the guide rod 7 slidably connected to the bottom surface of the positioning block 6 will gradually come into contact with the top surface of the object to be tested. As the guide rod 7 moves downward, it will compress the spring 8, thereby causing the guide rod 7 to move upward relative to the positioning block 6. The guide rod 7 can be adjusted based on its upward movement to determine whether the object to be tested is pressed into place by the positioning table 9. Then, the external air supply component is activated to supply air to the air supply slot. As the external air pressure enters between the placement slot 12 and the object to be tested, the air pressure gradually increases, causing the air pressure to be discharged through the rubber ring 13 and the object to be tested. This causes the external control component to detect the pressure leakage. The value of the air pressure leakage during the entire test process is recorded. The system's built-in calibration pressure value is compared to check whether the object to be tested meets the design air pressure. After meeting the design air pressure, the hydraulic cylinder 5 drives the positioning block 6 to lift. Then, the cylinder 11 installed on the mounting table 10 pushes the object that has been tested to proceed to the next object test.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leak detector with a limiting structure, comprising a lower limiting plate (1), characterized in that: The lower limit plate (1) has a positioning rod (2) vertically installed at each of the four corners of its top surface, and an upper limit plate (3) that slides with the positioning rod (2) is installed above the lower limit plate (1). An air circuit integration module (4) is installed on one side of the rear end of the top surface of the upper limit plate (3), and an air tightness detection component is installed between the upper limit plate (3) and the lower limit plate (1).

2. A leak detector with a limiting structure according to claim 1, characterized in that: The airtightness detection component includes a self-locking hydraulic cylinder (5) that is vertically installed on the top surface of the upper limit plate (3). The output shaft of the hydraulic cylinder (5) passes through the upper limit plate (3), and a positioning block (6) is sleeved on the output shaft of the hydraulic cylinder (5).

3. A leak detector with a limiting structure according to claim 2, characterized in that: The positioning block (6) has guide holes on both sides of its top surface, and the upper limit plate (3) has a sliding hole on its top surface that matches the guide hole. The upper limit plate (3) is also slidably connected to a limit rod that matches the guide hole and the sliding hole.

4. A leak detector with a limiting structure according to claim 3, characterized in that: The top surface of the positioning block (6) is provided with multiple positioning holes at equal intervals. A guide rod (7) that matches the positioning hole is slidably connected inside the positioning block (6). An abutment groove is provided on the outer side of the guide rod (7), and a spring (8) that matches the abutment groove is sleeved on the guide rod (7). The two ends of the spring (8) abut against the bottom surface of the positioning block (6) and the bottom surface inside the abutment groove, respectively.

5. A leak detector with a limiting structure according to claim 4, characterized in that: The lower limit plate (1) has a positioning platform (9) that cooperates with the positioning block (6) installed in the middle of the top surface, and an installation platform (10) is installed on one side of the rear end of the top surface of the lower limit plate (1). A cylinder (11) is installed above the installation platform (10), and the output shaft of the cylinder (11) is higher than the top surface of the positioning platform (9).

6. A leak detector with a limiting structure according to claim 5, characterized in that: The positioning platform (9) has a placement groove (12) in the middle of its top surface. A sealing groove is provided around the placement groove (12) on the outside of the placement groove (12). A rubber ring (13) is installed in the sealing groove. An air supply groove is provided on the bottom surface of the placement groove (12) that penetrates the rear end of the positioning platform (9). The cross-section of the air supply groove is L-shaped.

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