An automatic plug and seal mechanism and a seal testing device

Abstract

The application aims to provide an automatic plug sealing mechanism with simple and compact structure, low space occupancy and high automation degree, and a sealing test device. The automatic plug sealing mechanism comprises a base, a height adjusting assembly, front and rear air cylinders, up and down air cylinders, a rotary air cylinder, an insertion air cylinder, an insertion plate and an internal expansion plug. The height adjusting assembly is arranged on the base, the front and rear air cylinders are arranged on the height adjusting assembly, the up and down air cylinders are arranged on the action end of the front and rear air cylinders, the rotary air cylinder is arranged on the action end of the up and down air cylinders, the insertion air cylinder is arranged on the action end of the rotary air cylinder, the insertion plate is vertically arranged on the action end of the insertion air cylinder, and the internal expansion plug is arranged on the free end of the insertion plate. The sealing test device comprises a machine table and a conveying mechanism, a gas tightness testing instrument and the automatic plug sealing mechanism which are all arranged on the machine table. The application is applied to the technical field of automatic equipment.

Description

Technical Field

[0001] This invention relates to the technical field of automated equipment, and in particular to an automatic interlocking sealing mechanism and a sealing test device. Background Technology

[0002] When the water channel of a new energy vehicle inverter undergoes automatic airtightness testing, a sealing plug needs to be automatically inserted into one end of the product's water nozzle to form a seal, while the other end is sealed by the detection component of the sealing test instrument, thus creating a sealed space in the water channel. Then, the airtightness test is performed to achieve high-precision test results.

[0003] Currently, the insertion and mating of sealing plugs is either done manually or using a multi-axis robotic arm to insert them into the product's water channels for a sealing test. However, both manual and robotic methods have drawbacks: manual insertion affects the overall automation level of the production line, while robotic arms impact equipment layout and require more space.

[0004] The invention patent with publication number CN 207066698 U discloses an airtightness testing device for inverter housing, which can perform airtightness testing on inverter housing. However, its sealing mechanism is mainly for inverter housing, and the overall mechanism is complex and bulky. Not only is the cost high, but the space occupation problem is also unavoidable, which has limitations. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automatic interlocking sealing mechanism with simple and compact structure, low space occupation and high degree of automation, as well as a sealing test device.

[0006] The technical solution adopted in this invention is: an automatic interlocking sealing mechanism, including a base, a height adjustment component, front and rear cylinders, upper and lower cylinders, a rotary cylinder, an insertion cylinder, an insertion plate, and an internally expanding plug. The height adjustment component is disposed on the base, the front and rear cylinders are disposed on the height adjustment component, the upper and lower cylinders are disposed at the operating ends of the front and rear cylinders, the rotary cylinder is disposed at the operating ends of the upper and lower cylinders, the insertion cylinder is disposed at the operating end of the rotary cylinder, the insertion plate is vertically disposed at the operating end of the insertion cylinder, and the internally expanding plug is disposed on the free end of the insertion plate.

[0007] Furthermore, the height adjustment assembly includes an adjustment base, a first fine-tuning block, a second fine-tuning block, and a fine-tuning bolt. The adjustment base has an adjustment cavity. The first fine-tuning block is disposed in the adjustment cavity and has a first inclined surface at one end. The second fine-tuning block is disposed on the first fine-tuning block and has a second inclined surface at one end. The first inclined surface and the second inclined surface are wedge-shaped. The fine-tuning bolt is disposed on one side of the adjustment base and has one end inserted into the adjustment cavity and cooperates with the first fine-tuning block. The front and rear cylinders are disposed on the second fine-tuning block.

[0008] Furthermore, the adjusting base has waist-shaped holes on both sides, and the second fine-tuning block has limiting screws on both sides that cooperate with the waist-shaped holes.

[0009] Furthermore, the internal expansion plug includes an inflation cylinder, a connecting section, and a sealing ring. The connecting section is located on one side of the inflation cylinder and has an air passage communicating with the air outlet of the inflation cylinder. The sealing ring is sleeved on the end of the connecting section and cooperates with the air passage. An inflation port is provided on the other side of the inflation cylinder.

[0010] Furthermore, the internal expansion plug is an LA-FI type quick connector.

[0011] Furthermore, the base includes a base plate, on both sides of which upright plates are symmetrically arranged. The upper inner sides of the two upright plates are provided with installation steps, and the height adjustment component is arranged on the installation steps of the two upright plates.

[0012] A sealing test device includes a machine base and a conveying mechanism, an airtightness testing instrument, and several automatic interlocking sealing mechanisms, all mounted on the machine base. The airtightness testing instrument is located above the conveying mechanism, and the automatic interlocking sealing mechanisms are located on one side of the conveying mechanism.

[0013] Furthermore, a carrier plate lifting assembly is provided on the machine base. The carrier plate lifting assembly is located below the conveying mechanism. The carrier plate lifting assembly includes a lifting cylinder, a lifting plate, a guide shaft, and a guide sleeve. The lifting cylinder is disposed on the machine base and its output end extends out of the machine base. The lifting plate is disposed on the output end of the lifting cylinder. The guide sleeve is disposed on the machine base. The guide shaft is located inside the machine base and its upper end is sleeved inside the guide sleeve and extends out of the guide sleeve to connect with the lifting plate.

[0014] Furthermore, both ends of the conveying mechanism are equipped with blocking cylinders, and the output end of the blocking cylinder is equipped with a blocking component. Two sensors are installed on the machine base, and the two sensors are located between the conveying mechanism and the airtightness testing instrument.

[0015] Furthermore, a positioning component is provided inside the machine tool. The positioning component includes a positioning cylinder, and a positioning rod is provided at the output end of the positioning cylinder. The upper end of the positioning rod passes through the machine tool and the lifting plate in sequence.

[0016] The beneficial effects of this invention are as follows: The automatic mating sealing mechanism provided by this invention replaces the function of a robotic arm by using multiple cylinders in coordination. Its structure is simple and compact, meeting the requirements of automated operation while reducing space occupancy and manufacturing costs. It also boasts a high degree of automation, facilitating fully automated operation and improving work efficiency. Furthermore, the sealing test device provided by this invention employs an automatic mating sealing mechanism, effectively reducing the overall complexity of the equipment, lowering manufacturing costs to some extent, meeting the requirements of automated testing, and improving economic efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the automatic interlocking and sealing mechanism described in this invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the height adjustment component described in this invention;

[0019] Figure 3 This is a three-dimensional structural schematic diagram of the internally expanding plug described in this invention;

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the sealing test device described in this invention;

[0021] Figure 5 This is a three-dimensional structural schematic diagram of the conveying mechanism described in this invention;

[0022] Figure 6 This is a three-dimensional structural diagram of the carrier plate lifting assembly and the positioning assembly described in this invention. Detailed Implementation

[0023] like Figures 1 to 3As shown, in this embodiment, the automatic interlocking sealing mechanism of the present invention includes a base 1, a height adjustment component 2, front and rear cylinders 3, upper and lower cylinders 4, a rotary cylinder 5, an insertion cylinder 6, an insertion plate, and an internally expanding plug 8. The height adjustment component 2 is disposed on the base 1, the front and rear cylinders 3 are disposed on the height adjustment component 2, the upper and lower cylinders 4 are disposed at the operating end of the front and rear cylinders 3, the rotary cylinder 5 is disposed at the operating end of the upper and lower cylinders 4, the insertion cylinder 6 is disposed at the operating end of the rotary cylinder 5, the insertion plate is vertically disposed at the operating end of the insertion cylinder 6, and the internally expanding plug 8 is disposed on the free end of the insertion plate. The base 1 is used for the installation of the height adjustment component 2. The height adjustment component 2 is fixed to the upper end of the base 1 and has a height adjustment function. The front and rear cylinders 3 are fixed on the height adjustment component 2 to control the front and rear movement. The upper and lower cylinders 4 are fixed on the front and rear cylinders 3 to control the upper and lower movement. The rotary cylinder 5 is fixed on the upper and lower cylinders 4 to control the rotation movement to achieve angle adjustment. The insertion cylinder 6 is fixed on the rotary cylinder 5 to control the insertion and extension action. The insertion plate is fixed to the actuating end of the insertion cylinder 6 and moves under the drive of the insertion cylinder 6. The internal expansion plug 8 is used to block the water channel of the product. With the joint cooperation of the height adjustment component 2, the front and rear cylinders 3, the upper and lower cylinders 4, the rotary cylinder 5 and the insertion cylinder 6, it can meet the movement of various angles so as to facilitate smooth insertion with the water channel of the product. During operation, the front and rear cylinders 3 first extend forward to their designated positions, then the upper and lower cylinders 4 move to their positions, and finally the rotary cylinder 5 rotates to a specified angle. Driven by the insertion cylinder 6, the internal expansion plug 8 is inserted into a designated position inside the product, sealing the product's water pipes for a sealing test. After the test, the internal expansion plug 8 leaves its sealing position, and all cylinders reset in reverse order, completing the test for one product. As can be seen, by using multiple cylinders in coordination to replace the function of a robotic arm, the structure is simple and compact. While meeting the requirements of automated operation, it also reduces space occupancy, lowers manufacturing costs, and offers a high degree of automation, facilitating fully automated operation and improving work efficiency.

[0024] In this embodiment, the height adjustment assembly 2 includes an adjustment base 21, a first fine-tuning block 22, a second fine-tuning block 23, and a fine-tuning bolt 24. The adjustment base 21 has an adjustment cavity 25. The first fine-tuning block 22 is disposed in the adjustment cavity 25 and has a first inclined surface 26 at one end. The second fine-tuning block 23 is disposed on the first fine-tuning block 22 and has a second inclined surface 27 at one end. The first inclined surface 26 and the second inclined surface 27 are wedge-shaped. The fine-tuning bolt 24 is disposed on one side of the adjustment base 21 and has one end inserted into the adjustment cavity 25 and cooperates with the first fine-tuning block 22. The front and rear cylinders 3 are disposed on the second fine-tuning block 23. The adjustment cavity 25 is used for placing the first fine-tuning block 22 and the second fine-tuning block 23, and also serves to limit their movement. The first fine-tuning block 22 and the second fine-tuning block 23 form a wedge-shaped fit through the first inclined surface 26 and the second inclined surface 27. Therefore, when the first fine-tuning block 22 moves, the height of the second fine-tuning block 23 will change relatively. The fine-tuning bolt 24 is threadedly engaged with the adjustment base 21 and one end passes through the adjustment cavity 25 and contacts the first fine-tuning block 22, thereby limiting the position of the first fine-tuning block 22 to control the height change of the second fine-tuning block 23. When adjusting the height, the fine-tuning bolt 24 is turned forward, and the fine-tuning bolt 24 gradually penetrates into the adjusting cavity 25, driving the first fine-tuning block 22 to move forward. The second fine-tuning block 23 is subjected to force and rises upward under the action of the wedge fit and the limiting action of the adjusting cavity 25, thereby realizing upward adjustment. When the fine-tuning bolt 24 is turned in the opposite direction, the restriction of the first fine-tuning block 22 is released, and it will move backward under the weight of the second fine-tuning block 23 and other components. At the same time, the second fine-tuning block 23 moves downward, thereby realizing downward adjustment.

[0025] In this embodiment, the adjusting base 21 has oblong holes 28 on both sides, and the second fine-tuning block 23 has limiting screws on both sides that cooperate with the oblong holes 28. The second fine-tuning block 23, through the cooperation between the oblong holes 28 and the limiting screws, can achieve guided limiting, thereby ensuring that the movement of the second fine-tuning block 23 is vertical, thus preventing tilting during adjustment and ensuring adjustment accuracy.

[0026] In this embodiment, the internal expansion plug 8 includes an inflation cylinder 81, an insertion section 82, and a sealing ring 83. The insertion section 82 is disposed on one side of the inflation cylinder 81 and has an air passage communicating with the air outlet of the inflation cylinder 81. The sealing ring 83 is sleeved on the end of the insertion section 82 and cooperates with the air passage. An inflation port 84 is provided on the other side of the inflation cylinder 81. The inflation cylinder 81 is used to inflate the air passage in the insertion section 82. The insertion section 82 is used to be inserted into the water channel of the product for sealing. The sealing ring 83 is used to ensure the sealing effect during insertion. After insertion, the inflation cylinder 81 inflates, causing the sealing ring 83 to expand under force and thus adhere tightly to the inner wall of the water channel of the product, thereby forming a sealing effect.

[0027] In this embodiment, the internal expansion plug 8 is an LA-FI type quick connector.

[0028] In this embodiment, the base 1 includes a base plate 11, with upright plates 12 symmetrically arranged on both sides of the base plate 11. Installation steps are provided on the inner upper ends of the two upright plates 12, and the height adjustment component 2 is mounted on the installation steps of the two upright plates 12. The base 1 consists of the base plate 11 and two upright plates 12. The two upright plates 12 are vertically fixed to both sides of the base plate 11 and are symmetrical. The installation steps on the inner upper ends of the two upright plates 12 are used for the installation of the height adjustment component 2, ensuring stable installation.

[0029] like Figures 4 to 6 As shown, a sealing test device includes a machine base 100 and a conveying mechanism 200, an airtightness testing instrument 300, and several automatic interlocking sealing mechanisms all mounted on the machine base 100. The airtightness testing instrument 300 is located above the conveying mechanism 200, and the automatic interlocking sealing mechanisms are located on one side of the conveying mechanism 200. The machine base 100 is used for mounting the various mechanisms. The conveying mechanism 200 is used for conveying a carrier plate, thereby realizing automatic loading and unloading of products. The airtightness testing instrument is used for airtightness testing of the products. The automatic interlocking sealing mechanisms seal the products so that the airtightness testing instrument can complete the test. The carrier plate is movably placed on the conveying mechanism 200 to support the products and has a positioning and limiting function for the products, preventing the products from shifting during testing. The conveying mechanism 200 is a conventional double-sided plate type belt conveyor assembly, and the airtightness testing instrument 300 is mounted above the conveying mechanism 200 via a support platform.

[0030] In this embodiment, a carrier plate lifting assembly 400 is provided on the machine base 100. The carrier plate lifting assembly 400 is located below the conveying mechanism 200. The carrier plate lifting assembly 400 includes a lifting cylinder 401, a lifting plate 402, a guide shaft 403, and a guide sleeve 404. The lifting cylinder 401 is disposed on the machine base 100 and its output end extends out of the machine base 100. The lifting plate 402 is disposed on the output end of the lifting cylinder 401. The guide sleeve 404 is disposed on the machine base 100. The guide shaft 403 is located inside the machine base 100 and its upper end is sleeved inside the guide sleeve 404 and extends out of the guide sleeve 404 to connect with the lifting plate 402. The carrier plate lifting assembly 400 is used to lift the carrier plate, thereby lifting the product to a set height so that the airtightness testing instrument 300 and the automatic interlocking sealing mechanism can cooperate to perform a sealing test on the product; the lifting cylinder 401 is used to drive the lifting plate 402 to perform lifting and lowering actions, and the guide shaft 403 and the guide sleeve 404 are used to make the lifting and lowering actions of the lifting plate 402 more stable and provide better support.

[0031] In this embodiment, both ends of the conveying mechanism 200 are equipped with blocking cylinders 500, and the output end of each blocking cylinder 500 is equipped with a blocking component. Two sensors 600 are mounted on the machine base 100, located between the conveying mechanism 200 and the airtightness testing instrument 300. The two blocking cylinders 500 are respectively located on both sides of the carrier plate lifting assembly 400, used to block the carrier plate conveyed on the conveying mechanism 200. One cylinder closer to the input end of the conveying mechanism 200 serves to divert the flow, while the other closer to the output end serves to prevent the carrier plate from moving too far and being easily lifted by the carrier plate lifting assembly 400. The two sensors 600 work together to sense the height of the lifted product, thereby feeding the information back to the control system for more intelligent control.

[0032] In this embodiment, a positioning component 700 is provided inside the machine base 100. The positioning component 700 includes a positioning cylinder 701, and a positioning rod 702 is provided at the output end of the positioning cylinder 701. The upper end of the positioning rod 702 passes through the machine base 100 and the lifting plate 402 in sequence. The positioning component 700 is used to block the carrier plate on the conveying mechanism 200, thereby stopping the product in a suitable position so that the carrier plate lifting component 400 can lift it up for testing.

[0033] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. An automatic interlocking sealing mechanism, characterized in that: It includes a base (1), a height adjustment assembly (2), front and rear cylinders (3), upper and lower cylinders (4), a rotary cylinder (5), an insertion cylinder (6), an insertion plate (7), and an internal expansion plug (8). The height adjustment assembly (2) is mounted on the base (1), the front and rear cylinders (3) are mounted on the height adjustment assembly (2), the upper and lower cylinders (4) are mounted on the operating end of the front and rear cylinders (3), the rotary cylinder (5) is mounted on the operating end of the upper and lower cylinders (4), and the insertion cylinder (6) is mounted on the operating end of the rotary cylinder (5). The extension plate (7) is vertically arranged at the actuating end of the extension cylinder (6), and the internal expansion plug (8) is arranged on the free end of the extension plate (7). The internal expansion plug (8) includes an inflation cylinder (81), a connecting section (82) and a sealing ring (83). The connecting section (82) is arranged on one side of the inflation cylinder (81) and has an air passage that communicates with the air outlet of the inflation cylinder (81). The sealing ring (83) is sleeved on the end of the connecting section (82) and cooperates with the air passage. An inflation port (84) is opened on the other side of the inflation cylinder (81).

2. The automatic interlocking sealing mechanism according to claim 1, characterized in that: The height adjustment assembly (2) includes an adjustment base (21), a first fine-tuning block (22), a second fine-tuning block (23), and a fine-tuning bolt (24). The adjustment base (21) has an adjustment cavity (25). The first fine-tuning block (22) is located in the adjustment cavity (25) and has a first inclined surface (26) at one end. The second fine-tuning block (23) is located on the first fine-tuning block (22) and has a second inclined surface (27) at one end. The first inclined surface (26) and the second inclined surface (27) are wedge-shaped. The fine-tuning bolt (24) is located on one side of the adjustment base (21) and has one end inserted into the adjustment cavity (25) and cooperates with the first fine-tuning block (22). The front and rear cylinders (3) are located on the second fine-tuning block (23).

3. The automatic interlocking sealing mechanism according to claim 2, characterized in that: The adjusting base (21) has waist-shaped holes (28) on both sides, and the second fine-tuning block (23) has limiting screws on both sides that cooperate with the waist-shaped holes (28).

4. The automatic interlocking sealing mechanism according to claim 1, characterized in that: The internal expansion plug (8) is an LA-FI type quick connector.

5. An automatic interlocking sealing mechanism according to claim 1, characterized in that: The base (1) includes a base plate (11), and upright plates (12) are symmetrically arranged on both sides of the base plate (11). The upper inner sides of the two upright plates (12) are provided with installation steps, and the height adjustment component (2) is arranged on the installation steps of the two upright plates (12).

6. A sealing test device comprising an automatic interlocking sealing mechanism as described in any one of claims 1 to 5, characterized in that: It includes a machine base (100) and a conveying mechanism (200), an airtightness testing instrument (300), and several automatic interlocking sealing mechanisms, all mounted on the machine base (100). The airtightness testing instrument (300) is located above the conveying mechanism (200), and the automatic interlocking sealing mechanism is located on one side of the conveying mechanism (200).

7. A sealing test device according to claim 6, characterized in that: A plate lifting assembly (400) is provided on the machine base (100). The plate lifting assembly (400) is located below the conveying mechanism (200). The plate lifting assembly (400) includes a lifting cylinder (401), a lifting plate (402), a guide shaft (403), and a guide sleeve (404). The lifting cylinder (401) is provided on the machine base (100) and its output end extends out of the machine base (100). The lifting plate (402) is provided on the output end of the lifting cylinder (401). The guide sleeve (404) is provided on the machine base (100). The guide shaft (403) is located inside the machine base (100) and its upper end is sleeved inside the guide sleeve (404) and extends out of the guide sleeve (404) to connect with the lifting plate (402).

8. A sealing test device according to claim 7, characterized in that: Both ends of the conveying mechanism (200) are provided with blocking cylinders (500), and the output end of the blocking cylinders (500) is provided with blocking components. Two sensors (600) are provided on the machine base (100), and the two sensors (600) are located between the conveying mechanism (200) and the airtightness testing instrument (300).

9. A sealing test device according to claim 8, characterized in that: The machine tool (100) is provided with a positioning component (700), which includes a positioning cylinder (701). The output end of the positioning cylinder (701) is provided with a positioning rod (702). The upper end of the positioning rod (702) passes through the machine tool (100) and the lifting plate (402) in sequence.

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