A multi-station seal test machine

Abstract

The utility model discloses a kind of multi-station sealing test machines, it is related to sealing test technical field, including workbench, the workbench outer wall equidistance fixedly connected with first support frame, second support frame, third support frame and fourth support frame, first support frame, second support frame, third support frame, fourth support frame, telescopic cylinder, inflation head, electric telescopic rod and pressure sensor mutually cooperate can carry out airtightness detection to multiple workpieces simultaneously, use multiple toolings on the same equipment, avoid multiple equipment accumulation to cause production space waste, improve factory building utilization area, by servo motor, first gear, second gear, third gear, fourth gear, rotating shaft, feeding disc and placing seat, multiple workpieces can be automatically moved to inflation head and pressure sensor below position place and carry out sealing test, while sealing test can also be to workpiece batch feeding and discharging, without shutdown also can be to workpiece feeding and discharging, improve the sealing test efficiency of device.

Description

Technical Field

[0001] This utility model relates to the field of sealing test technology, and in particular to a multi-station sealing test machine. Background Technology

[0002] Air tightness testing is a critical process for ensuring product reliability, safety, and lifespan, and is widely used in industries such as automotive manufacturing, medical devices, consumer electronics, aerospace, and home appliances. Its core purpose is to detect whether a workpiece has leaks and whether the leakage rate is within acceptable limits.

[0003] Currently, mainstream sealing testing technologies mainly include direct immersion (bubble method), pressure decay method, differential pressure method, flow rate method, and helium mass spectrometry leak detection method. Among them, the pressure decay method has become the most commonly used and universal testing method in industrial production due to its advantages such as moderate equipment cost, high detection accuracy, ease of automation, and no environmental pollution. Its basic principle is: clean gas (usually compressed air) at a certain pressure is introduced into the workpiece under test. After a period of pressure stabilization, the gas supply is cut off, and the pressure drop value over a period of time is monitored by a high-precision pressure sensor. Based on the pre-calibrated pressure-leakage relationship, the leakage rate of the workpiece can be calculated.

[0004] Existing sealing testing machines require shutdown for loading and unloading after completing the sealing test, which takes a long time and results in low testing efficiency. In addition, the workpieces to be tested often come in various specifications and models, and the process of changing fixtures or carriers is cumbersome and time-consuming, which further affects the overall efficiency and flexibility of the production line. Furthermore, the placement of multiple single-station sealing testing equipment requires a certain space, which increases the space available in the factory and reduces the usable production area. This is not suitable for factories with limited space. Therefore, a multi-station sealing testing machine is proposed.

[0005] Practical content

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as the need to stop the machine for loading and unloading after completing the sealing test, which results in long loading and unloading times, low testing efficiency, and the fact that the workpieces to be tested often have multiple specifications and models, making the process of changing fixtures or carriers cumbersome and time-consuming, further affecting the overall efficiency and flexibility of the production line. In addition, the placement of multiple single-station sealing testing equipment requires a certain space, increasing the space required and reducing the usable production area within the factory, making it unsuitable for factories with limited space. Therefore, a multi-station sealing testing machine is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A multi-station sealing test machine includes a workbench. A first support frame, a second support frame, a third support frame, and a fourth support frame are fixedly connected at equal intervals to the outer wall of the workbench. A telescopic cylinder is fixedly installed at one end of the top of each of the first, second, third, and fourth support frames. A movable base is fixedly connected to the output end of the telescopic cylinder. An inflation head is fixedly installed at the bottom of the movable base. An electric telescopic rod is fixedly connected to the top of each of the first, second, third, and fourth support frames, away from the telescopic cylinder. A pressure sensor is fixedly installed at the output end of the electric telescopic rod. The device includes a function box fixedly connected to the bottom of the workbench, a partition fixedly connected inside the function box, a servo motor fixedly connected to the top of the partition, a first gear fixedly connected to the output end of the servo motor, a chain meshing on the outer surface of the first gear, a second gear, a third gear, and a fourth gear meshing on the side of the chain away from the first gear, a rotating shaft fixedly connected to the outer wall of the first gear, a fixed seat fixedly connected to the top of the rotating shaft, a feeding tray being snapped into the fixed seat, and four placement seats being provided on the upper surface of the feeding tray.

[0009] Furthermore, a display panel is fixedly connected to the top of the workbench at the end away from the first, second, third, and fourth support frames. A lighting device is fixedly installed on the top of the display panel. A control console is fixedly connected to the front of the function box. The telescopic cylinder and electric telescopic rod are electrically connected to the control console. The display panel is used to display the test status, pressure curve, final results (e.g., green light indicates pass, red light indicates fail), and statistical information for each workstation in real time. The lighting device provides good illumination for the operator to observe the equipment and display panel. The sealing test system, control console, display panel, telescopic cylinder, electric telescopic rod, and internal wiring connections described in this paper are all existing technologies and will not be elaborated further.

[0010] Furthermore, the bottom of the functional box is equipped with multiple casters, and four support legs are fixedly installed at the four corners of the lower surface of the functional box. The combination of casters and support legs facilitates the movement of the equipment and provides stable support after it is in place.

[0011] Furthermore, the first support frame, the second support frame, the third support frame and the fourth support frame have a limiting groove on the outer wall near the movable seat. A sliding block is slidably connected inside the limiting groove. The sliding block is fixedly connected to the movable seat. The movable seat is set in an inverted "L" shape. The limiting groove and the sliding block make the inflation head more stable when it is raised and lowered.

[0012] Furthermore, the fixed base has a drive cavity inside, and a first threaded rod is rotatably connected inside the drive cavity. Two connecting plates are threaded to both ends of the outer surface of the first threaded rod. A transmission rack is fixedly connected to the end of each of the two connecting plates away from the first threaded rod. Two transmission gears mesh with the outer surfaces of the two transmission racks respectively. A second threaded rod is fixedly connected to the outer wall of the two transmission gears. A push rod is threaded to the outer surface of the second threaded rod. A wedge is abutted against one side of the outer wall of the push rod. A connecting rod is fixedly connected to the outer wall of the wedge away from the push rod. A limit block is fixedly connected to the outer wall of the connecting rod away from the wedge.

[0013] Furthermore, the fixed base is provided with a fixed cavity, the lower end of the feeding tray is located in the fixed cavity, and the top of the first threaded rod extends through the inner wall of the fixed base to the outside and is fixedly connected to a knob.

[0014] Furthermore, a return spring is sleeved on the outer surface of the connecting rod, the top of the return spring is fixedly connected to the inner wall of the fixed base, and the bottom of the return spring is fixedly connected to the outer wall of the inclined block.

[0015] Furthermore, the lower end of the feeding tray has limit grooves on both sides of the outer wall. The shape and size of the limit grooves are adapted to the limit blocks, so that the limit blocks can be inserted into and removed from the limit grooves more smoothly and stably.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the first, second, third, and fourth support frames, telescopic cylinder, inflation head, electric telescopic rod, and pressure sensor work together to simultaneously perform airtightness testing on multiple workpieces. By using multiple fixtures on the same equipment, the waste of production space caused by the accumulation of multiple devices is avoided, and the utilization area of ​​the factory is improved. Through the servo motor, first gear, second gear, third gear, fourth gear, rotating shaft, loading tray, and placement seat, multiple workpieces can be automatically moved to the position below the inflation head and pressure sensor for sealing testing. During the sealing test, workpieces can also be loaded and unloaded in batches without stopping the machine, thus improving the sealing test efficiency of the device.

[0018] 2. In this practical application, the first threaded rod, connecting plate, transmission rack, transmission gear, second threaded rod, push rod, wedge block, connecting rod, limit block and return spring are used in combination to quickly and conveniently disassemble and replace the feeding tray. This allows the staff to change the placement seat according to the test workpieces of different sizes and shapes, shortens the downtime for replacement, and improves the practicality and flexibility of the device. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of a multi-station sealing tester proposed in this utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0021] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4 This is a three-dimensional schematic diagram of the internal structure of the fixed base used in this application.

[0023] In the diagram: 1. Workbench; 2. First support frame; 3. Second support frame; 4. Third support frame; 5. Fourth support frame; 6. Telescopic cylinder; 7. Moving seat; 8. Inflation head; 9. Electric telescopic rod; 10. Pressure sensor; 11. Function box; 12. Partition; 13. Servo motor; 14. First gear; 15. Chain; 16. Second gear; 17. Third gear; 18. Fourth gear; 19. Rotating shaft; 20. Fixed seat; 21. Feeding tray; 22. Placement seat; 23. Display panel; 24. Lighting equipment; 25. Control console; 26. Drive cavity; 27. First threaded rod; 28. Connecting plate; 29. ​​Transmission rack; 30. Transmission gear; 31. Second threaded rod; 32. Push rod; 33. Inclined block; 34. Connecting rod; 35. Limiting block; 36. Return spring. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1

[0026] like Figure 1 - Figure 4As shown, the present invention proposes a multi-station sealing test machine, comprising a workbench 1. A first support frame 2, a second support frame 3, a third support frame 4, and a fourth support frame 5 are fixedly connected at equal intervals to the outer wall of the workbench 1. A telescopic cylinder 6 is fixedly installed at one end of the top of each of the first support frame 2, second support frame 3, third support frame 4, and fourth support frame 5. A movable seat 7 is fixedly connected to the output end of the telescopic cylinder 6. An inflation head 8 is fixedly installed at the bottom of the movable seat 7. An electric telescopic rod 9 is fixedly connected to the top of each of the first support frame 2, second support frame 3, third support frame 4, and fourth support frame 5 at the end away from the telescopic cylinder 6. A pressure sensor 10 is fixedly installed at the output end of the electric telescopic rod 9. The workbench... A functional box 11 is fixedly connected to the bottom. A partition 12 is fixedly connected inside the functional box 11. A servo motor 13 is fixedly connected to the top of the partition 12. A first gear 14 is fixedly connected to the output end of the servo motor 13. A chain 15 is meshed on the outer surface of the first gear 14. A second gear 16, a third gear 17, and a fourth gear 18 are meshed on the side of the chain 15 away from the first gear 14. A rotating shaft 19 is fixedly connected to the outer wall of the first gear 14, the second gear 16, the third gear 17, and the fourth gear 18. A fixed seat 20 is fixedly connected to the top of the rotating shaft 19. A feeding tray 21 is snapped into the fixed seat 20. Four placement seats 22 are provided on the upper surface of the feeding tray 21.

[0027] A display panel 23 is fixedly connected to the top of the workbench 1 away from the first support frame 2, the second support frame 3, the third support frame 4 and the fourth support frame 5. A lighting device 24 is fixedly installed on the top of the display panel 23. A control console 25 is fixedly connected to the front of the function box 11. The telescopic cylinder 6 and the electric telescopic rod 9 are electrically connected to the control console 25.

[0028] The bottom of the function box 11 is equipped with multiple casters, and four support legs are fixedly installed at the four corners of the lower surface of the function box 11.

[0029] The first support frame 2, the second support frame 3, the third support frame 4 and the fourth support frame 5 have a limiting groove on the outer wall near the movable seat 7. A sliding block is slidably connected inside the limiting groove. The sliding block is fixedly connected to the movable seat 7, which is shaped like an inverted "L".

[0030] In this embodiment, by placing the test workpiece into the placement seat 22 on the four loading trays 21, the telescopic cylinders 6 and electric telescopic rods 9 on the first support frame 2, second support frame 3, third support frame 4, and fourth support frame 5 are activated. The telescopic cylinders 6 drive the inflation head 8 downwards, forming a seal with the opening of the test workpiece and inflating it with gas. Simultaneously, the electric telescopic rod 9 pushes the pressure sensor 10 downwards, tightly fitting it against the top of the test workpiece to form a reliable sealing reference surface. After inflation stops, the pressure sensor 10... The system continuously monitors changes in workpiece pressure and transmits the data to the control panel 25 in real time. The program determines whether the workpiece's sealing performance is up to standard based on the rate and range of pressure drop and displays the results on the display panel 23. After a single workpiece test is completed, the servo motor 13 is started to drive the first gear 14 to rotate. The rotating first gear 14 drives the second gear 16, the third gear 17, and the fourth gear 18 to rotate synchronously via the chain 15. It also drives the four loading trays 21 to rotate counterclockwise, moving the workpiece that has completed the sealing test to the front of the operator. At the same time, the workpiece to be tested is automatically fed into the position below the inflation head 8 and the pressure sensor 10 for sealing test. In this way, batch loading and unloading can be performed while the workpiece is being sealed, greatly improving the efficiency of the device's sealing test.

[0031] Example 2

[0032] like Figure 1 - Figure 4 As shown, based on Embodiment 1, a drive cavity 26 is provided inside the fixed base 20. A first threaded rod 27 is rotatably connected inside the drive cavity 26. Two connecting plates 28 are threaded to both ends of the outer surface of the first threaded rod 27. A transmission rack 29 is fixedly connected to the end of each connecting plate 28 away from the first threaded rod 27. Two transmission gears 30 are respectively meshed on the outer surfaces of the two transmission racks 29. A second threaded rod 31 is fixedly connected to the outer wall of the two transmission gears 30. A push rod 32 is threaded to the outer surface of the second threaded rod 31. A wedge block 33 abuts against one side of the outer wall of the push rod 32. A connecting rod 34 is fixedly connected to the outer wall of the wedge block 33 away from the push rod 32. A limit block 35 is fixedly connected to the outer wall of the connecting rod 34 away from the wedge block 33.

[0033] The fixed base 20 has a fixed cavity, the lower end of the feeding tray 21 is located in the fixed cavity, and the top of the first threaded rod 27 extends through the inner wall of the fixed base 20 to the outside and is fixedly connected to a knob.

[0034] A return spring 36 is fitted on the outer surface of the connecting rod 34. The top of the return spring 36 is fixedly connected to the inner wall of the fixed base 20, and the bottom of the return spring 36 is fixedly connected to the outer wall of the inclined block 33.

[0035] Limiting grooves are provided on the outer walls of both sides of the lower end of the feeding tray 21. The shape and size of the limiting grooves are adapted to the limiting block 35.

[0036] In this embodiment, the first threaded rod 27 is rotated in the drive cavity 26 by a knob. The rotating first threaded rod 27 drives the two connecting plates 28 to move, and also drives the two transmission racks 29 to move. The two transmission racks 29 drive the two meshing transmission gears 30 to rotate. The two transmission gears 30 drive the second threaded rod 31 to rotate. The second threaded rod 31 drives the push rod 32 to move up and down. When the second threaded rod 31 drives the push rod 32 to move upward, the return spring 36 releases its elastic force, giving the inclined block 33 an outward force, which drives the two connecting rods 34 and the limiting block 35 to move. The two limiting blocks 35 disengage from the slots on the loading tray 21, releasing the limiting fixation of the loading tray 21, and the loading tray 21 and the placement seat 22 can be replaced to accommodate test workpieces of different sizes and shapes.

[0037] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station sealing test machine, comprising a worktable (1), characterized in that: The workbench (1) is equidistantly connected to a first support frame (2), a second support frame (3), a third support frame (4), and a fourth support frame (5). A telescopic cylinder (6) is fixedly installed at one end of the top of each of the first support frame (2), second support frame (3), third support frame (4), and fourth support frame (5). A movable seat (7) is fixedly connected to the output end of the telescopic cylinder (6). An inflation head (8) is fixedly installed at the bottom of the movable seat (7). An electric telescopic rod (9) is fixedly connected to the top of each of the first support frame (2), second support frame (3), third support frame (4), and fourth support frame (5) away from the telescopic cylinder (6). A pressure sensor (10) is fixedly installed at the output end of the electric telescopic rod (9). A functional box (11) is fixedly connected to the bottom of the workbench (1). A partition (12) is fixedly connected inside the functional box (11). A servo motor (13) is fixedly connected to the top of the partition (12). A first gear (14) is fixedly connected to the output end of the servo motor (13). A chain (15) meshes with the outer surface of the first gear (14). A second gear (16), a third gear (17), and a fourth gear (18) mesh with the chain (15) on the side away from the first gear (14). A rotating shaft (19) is fixedly connected to the outer wall of the first gear (14), the second gear (16), the third gear (17), and the fourth gear (18). A fixed seat (20) is fixedly connected to the top of the rotating shaft (19). A feeding tray (21) is snapped into the inside of the fixed seat (20). Four placement seats (22) are provided on the upper surface of the feeding tray (21).

2. The multi-station sealing test machine according to claim 1, characterized in that: A display panel (23) is fixedly connected to the top of the workbench (1) away from the first support frame (2), the second support frame (3), the third support frame (4) and the fourth support frame (5). A lighting device (24) is fixedly installed on the top of the display panel (23). A control console (25) is fixedly connected to the front of the function box (11). The telescopic cylinder (6) and the electric telescopic rod (9) are electrically connected to the control console (25).

3. The multi-station sealing test machine according to claim 1, characterized in that: The bottom of the functional box (11) is provided with multiple casters, and four support legs are fixedly installed at the four corners of the lower surface of the functional box (11).

4. The multi-station sealing test machine according to claim 1, characterized in that: The first support frame (2), the second support frame (3), the third support frame (4) and the fourth support frame (5) have a limiting groove on the outer wall near the movable seat (7). A sliding block is slidably connected inside the limiting groove. The sliding block is fixedly connected to the movable seat (7). The movable seat (7) is set in an inverted "L" shape.

5. A multi-station sealing test machine according to claim 4, characterized in that: The fixed base (20) has a drive cavity (26) inside. A first threaded rod (27) is rotatably connected inside the drive cavity (26). Two connecting plates (28) are threaded to both ends of the outer surface of the first threaded rod (27). A transmission rack (29) is fixedly connected to the end of each of the two connecting plates (28) away from the first threaded rod (27). Two transmission gears (30) mesh with the outer surfaces of the two transmission racks (29). A second threaded rod (31) is fixedly connected to the outer wall of the two transmission gears (30). A push rod (32) is threaded to the outer surface of the second threaded rod (31). A wedge (33) abuts against one side of the outer wall of the push rod (32). A connecting rod (34) is fixedly connected to the outer wall of the wedge (33) away from the push rod (32). A limit block (35) is fixedly connected to the outer wall of the connecting rod (34) away from the wedge (33).

6. A multi-station sealing test machine according to claim 5, characterized in that: The fixed seat (20) has a fixed cavity, the lower end of the feeding tray (21) is located in the fixed cavity, and the top of the first threaded rod (27) extends through the inner wall of the fixed seat (20) to the outside and is fixedly connected to a knob.

7. A multi-station sealing test machine according to claim 5, characterized in that: The outer surface of the connecting rod (34) is fitted with a reset spring (36), the top of the reset spring (36) is fixedly connected to the inner wall of the fixed seat (20), and the bottom of the reset spring (36) is fixedly connected to the outer wall of the inclined block (33).

8. A multi-station sealing test machine according to claim 1, characterized in that: The lower two sides of the feeding tray (21) are provided with limiting grooves, and the shape and size of the limiting grooves are adapted to the limiting block (35).

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