Air tightness testing device for key dispensing upper cover

Abstract

The utility model discloses a key dispensing upper cover air tightness testing device, which belongs to the technical field of air tightness testing, and comprises a tool for testing air tightness, a positioning seat is arranged in the tool, the tool is positioned in a groove III, and an instrument panel of which the air tightness is to be tested is arranged in the tool; the rear end of the positioning seat is fixedly connected with a driving mechanism, the front end of the driving mechanism is rotatably connected with the top of a pressing plate, and the front end of the top of the pressing plate is fixedly connected with two hasp base plates. Uniform-speed opening and closing of the pressing plate and controllable adjustment of pressing speed and force are achieved through the air cylinder driving mechanism, impact force is prevented from damaging a precise instrument panel, and meanwhile the adaptability of equipment to jigs with different heights is enhanced through the stroke adjusting characteristic of the air cylinder; a rotating pair mechanism formed by the flip cover base and the single lug seat ensures that the pressing plate is stably turned over along a fixed axis, deflection errors generated by traditional hinge connection are eliminated, and it is guaranteed that the press-fit position is accurately repeated.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to an airtightness testing device for button adhesive cover. Background Technology

[0002] In the traditional instrument panel air tightness testing process, a special instrument is usually used to conduct a positive pressure air tightness test by closing the upper and lower molds, but this technology has certain drawbacks.

[0003] First, insufficient fixture compatibility leads to low production efficiency. Different models of instrument panels require independent fixtures, and switching requires disassembling the original mold and reinstalling the compatible mold. This involves disassembling mechanical fasteners, calibrating positioning pin holes, and connecting air and electrical circuits. A single switchover takes more than 30 minutes, and space must be reserved for storing dedicated fixtures. In the multi-variety, small-batch production mode, the cost of fixture storage and switching increases exponentially, severely restricting production flexibility. On the other hand, the lack of a safety interlock mechanism leads to multiple risks. The equipment only achieves basic positioning through mechanical limit blocks and does not integrate product positioning detection sensors or cover closure confirmation devices. Operational negligence may lead to forced testing when the workpiece is not fully positioned or the cover is not properly sealed. This poses a risk of workpiece ejection and injury, and may also cause the air pressure sensor to be impacted, shortening the component life. Incorrect data also requires re-inspection, adding an extra 30% of inspection time. A case from one manufacturer shows that the equipment failure rate due to failure to detect cover abnormalities reached 2.7%, with an average annual maintenance cost of over 150,000 yuan.

[0004] Therefore, there is an urgent need to provide a device for testing the airtightness of the button dispensing cover to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a device for testing the airtightness of the button dispensing cover.

[0006] To solve the above technical problems, the present invention adopts a technical solution as follows: providing a button dispensing cover air tightness testing device, including a fixture for testing air tightness, a positioning seat installed in the fixture, a pressure plate rotatably connected to the top of the positioning seat, a second groove on the top of the positioning seat, a third groove at the center of the pressure plate, a fixture placed in the second groove, the fixture located in the third groove, and an instrument panel to be tested for air tightness placed in the fixture;

[0007] The rear end of the positioning seat is fixedly connected to a driving mechanism, the front end of the driving mechanism is rotatably connected to the top of the pressure plate, and the top front end of the pressure plate is fixedly connected to two buckle pads.

[0008] Through the above technical solution, the button dispensing cover airtightness testing device achieves precise clamping of the fixture through the rotational connection structure of the positioning seat and the pressure plate. During operation, the instrument panel to be tested is placed in the fixture cavity, and the drive mechanism drives the pressure plate to rotate and press down around the flip cover base, so that the fixture is embedded in slot three and forms a sealed testing space with slot two. The fixture adopts an independent cavity design to adapt to products of different sizes. By changing the fixture, various models can be quickly matched, which not only ensures the sealing fit, but also avoids the whole machine downtime for model change, significantly improving testing efficiency and equipment utilization.

[0009] The present invention is further configured such that: two flip-top bases are fixedly connected to the top rear end of the positioning seat, and a single ear seat is rotatably connected inside each of the two flip-top bases; the two single ear seats are fixedly connected to the rear end of the pressure plate.

[0010] Through the above technical solution, the positioning seat and the pressure plate form a rotary joint connection structure through the flip-top base and the single ear seat. When the drive mechanism is activated, the pressure plate flips stably along the axis of the single ear seat. This structure makes the pressing action have a clear motion trajectory, avoids the wobble error that is easy to be generated by traditional hinge connection, and ensures that the pressing position is accurately repeated each time. At the same time, the flip-top base disperses the force points and extends the service life of the equipment.

[0011] The present invention is further configured such that: the driving mechanism includes two blocks fixedly connected to the rear end of the positioning seat, each of the two blocks having a cylinder rotatably connected thereto, and the other end of each of the two cylinders being rotatably connected to the top of the pressure plate.

[0012] Through the above technical solution, the cylinder, as the driving mechanism, forms a dual-acting actuator with the pressure plate through the second block. During operation, the cylinders on both sides extend and retract synchronously to push the pressure plate to open and close at a uniform speed. The pressing speed and force can be controlled by adjusting the cylinder inlet pressure. This design makes the opening and closing process of the pressure plate smooth and controllable, avoiding damage to the precision instrument panel due to impact force. At the same time, the adjustable cylinder stroke characteristic is adapted to fixtures of different heights, enhancing the equipment's versatility.

[0013] The present invention is further configured such that: a cavity is provided inside the fixture, and an instrument panel is placed inside the cavity.

[0014] Through the above technical solution, the internal cavity of the fixture is perfectly matched with the shape of the instrument panel, forming an independent sealed chamber during testing. By changing fixtures with different cavity sizes, the test object can be quickly switched. This design allows a single device to be compatible with the testing of multiple product specifications. The standardized interface of the fixture enables quick disassembly and assembly, shortens the changeover time, avoids the need to adjust the parameters of the whole machine, and improves the flexible production capacity of the production line. Multiple fixtures can be placed in one airtightness test.

[0015] The present invention is further configured such that: a plurality of proximity switches are installed around the positioning base, a plurality of support legs are fixedly connected to the bottom of the positioning base, and a display screen is installed on the top of the tooling.

[0016] Through the above technical solution, the proximity switches arranged around the positioning seat constitute a safety detection system. When the instrument panel is not fully placed in the fixture or the pressure plate is not closed in place, the proximity switch signal blocks the start of the test program. This mechanism prevents equipment damage or personal injury caused by misoperation. At the same time, the bottom support legs ensure that the equipment is placed horizontally. The display screen shows the test pressure curve and results in real time, realizing visual operation and process traceability.

[0017] The present invention is further configured such that: each of the tops of the two buckle pads is fixedly connected with a second buckle, and the front end of the positioning seat is fixedly connected with two buckles, and the two second buckles are respectively matched and correspond to the two buckles.

[0018] Through the above technical solution, the latch plate and the buckle form a double mechanical locking mechanism. After the pressure plate is pressed down, the operator needs to manually fasten the second latch and the buckle. This design adds a physical locking function on the basis of pneumatic pressing to prevent the pressure plate from being accidentally opened due to air pressure fluctuations during the test. At the same time, the latch structure conforms to the ergonomic design, which can be operated quickly with one hand, taking into account both safety protection and work efficiency.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model achieves uniform opening and closing of the pressure plate and controllable adjustment of pressing speed and force through a cylinder-driven mechanism, avoiding damage to the precision instrument panel by impact force, while enhancing the adaptability of the equipment to fixtures of different heights by utilizing the adjustable stroke of the cylinder; the rotary joint mechanism composed of the flip-top base and the single ear seat ensures stable flipping of the pressure plate along the fixed axis by the cylinder, eliminating the wobble error caused by traditional hinge connection and ensuring accurate and repeatable pressing position; the fixture mechanism with independent cavity design enables rapid changeover, shortens fixture changeover time by using standardized interfaces, avoids adjustment of whole machine parameters, and improves the flexible testing capability of the production line;

[0021] 2. This utility model uses a safety detection mechanism composed of proximity switches to monitor the closing status of the pressure plate and the placement position of the instrument panel in real time, preventing the start of the test program under abnormal working conditions and preventing equipment damage and personal injury; the double locking mechanism composed of latching pads and buckles adds a physical locking function to the pneumatic pressing, preventing the pressure plate from being accidentally opened during the test; the complete matching of the internal cavity of the fixture with the shape of the instrument panel forms an independent sealed environment, and the display screen realizes real-time visualization of the test pressure curve and results; finally, the support legs ensure that the equipment is placed horizontally, thus improving the accuracy, safety and production efficiency of the airtightness test. Attached Figure Description

[0022] Figure 1 This is a first-view structural diagram of the present invention;

[0023] Figure 2 This is a second-view sectional view of the present invention;

[0024] Figure 3 This is a sectional view of the drive mechanism structure;

[0025] Figure 4 This is a third-view sectional view of the present invention;

[0026] Figure 5 This is a fourth-angle sectional view of the present invention;

[0027] Figure 6 This is a fifth-angle sectional view of the present invention.

[0028] In the diagram: 1. Tooling; 2. Positioning seat; 3. Pressure plate; 4. Slot 2; 5. Slot 3; 6. Fixture; 7. Drive mechanism; 701. Block 2; 702. Cylinder; 8. Hook and latch pad; 9. Flip cover base; 10. Single ear seat; 11. Cavity; 12. Proximity switch; 13. Support leg; 14. Display screen; 15. Hook and latch 2; 16. Buckle. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] Please see Figures 1-6 The button dispensing cover air tightness testing device of this embodiment includes a fixture 1 for testing air tightness. A positioning seat 2 is installed in the fixture 1. A pressure plate 3 is rotatably connected to the top of the positioning seat 2. A second groove 4 is opened on the top of the positioning seat 2. A third groove 5 is opened at the center of the pressure plate 3. A fixture 6 is placed in the second groove 4. The fixture 6 is located in the third groove 5, and the instrument panel to be tested for air tightness is placed in the fixture 6.

[0031] like Figures 1-3 As shown, a drive mechanism 7 is fixedly connected to the rear end of the positioning seat 2. The drive mechanism 7 includes two blocks 701 fixedly connected to the rear end of the positioning seat 2. A cylinder 702 is rotatably connected in each of the two blocks 701. The other end of each cylinder 702 is rotatably connected to the top of the pressure plate 3. The cylinder 702, as the drive mechanism 7, forms a double-acting actuation component with the pressure plate 3 through the blocks 701. During operation, the cylinders 702 on both sides extend and retract synchronously to push the pressure plate 3 to open and close at a uniform speed. The pressing speed and force can be controlled by adjusting the air pressure of the cylinder 702. This design makes the opening and closing process of the pressure plate 3 smooth and controllable, avoiding damage to the precision instrument panel due to impact. At the same time, the adjustable stroke of the cylinder 702 is adapted to fixtures 6 of different heights, enhancing the versatility of the equipment.

[0032] like Figures 4-6As shown, the front end of the drive mechanism 7 is rotatably connected to the top of the pressure plate 3. Two snap-on pads 8 are fixedly connected to the front end of the top of the pressure plate 3. The button dispensing cover airtightness test device achieves precise pressing of the fixture 6 through the rotational connection structure between the positioning seat 2 and the pressure plate 3. During operation, the instrument panel to be tested is placed in the cavity 11 of the fixture 6. The drive mechanism 7 drives the pressure plate 3 to rotate and press down around the flip cover base 9, so that the fixture 6 is embedded in the third groove 5 and forms a sealed testing space with the second groove 4. The fixture 6 adopts an independent cavity 11 design to adapt to products of different sizes. By changing the fixture 6, various models can be quickly matched, which not only ensures the sealing fit, but also avoids the whole machine downtime for model change, significantly improving testing efficiency and equipment utilization.

[0033] like Figures 1-4 As shown, two flip-top bases 9 are fixedly connected to the top rear end of the positioning seat 2. Each of the two flip-top bases 9 is rotatably connected to a single ear seat 10. The two single ear seats 10 are fixedly connected to the rear end of the pressure plate 3. The positioning seat 2 and the pressure plate 3 form a rotary joint connection structure through the flip-top bases 9 and the single ear seats 10. When the drive mechanism 7 is activated, the pressure plate 3 flips stably along the axis of the single ear seat 10. This structure gives the pressing action a clear motion trajectory, avoids the wobble error that is easy to be generated by traditional hinge connections, ensures that the pressing position is accurately repeated each time, and at the same time, the flip-top bases 9 distribute the force points and extend the service life of the equipment.

[0034] like Figures 1-6 As shown, the fixture 6 has a cavity 11 inside, and an instrument panel is placed inside the cavity 11. The shape of the cavity 11 inside the fixture 6 is completely matched with that of the instrument panel, forming an independent sealed chamber during testing. By changing the fixture 6 with different cavity 11 sizes, the test object can be quickly switched. This design allows a single device to be compatible with the testing of multiple product specifications. The standardized interface of the fixture 6 enables quick assembly and disassembly, shortens the changeover time, avoids the need to adjust the parameters of the whole machine, and improves the flexible production capacity of the production line. Multiple fixtures 6 can be placed in one airtightness test.

[0035] like Figures 1-3 As shown, multiple proximity switches 12 are installed around the positioning base 2, and multiple support legs 13 are fixedly connected to the bottom of the positioning base 2. A display screen 14 is installed on the top of the fixture 1. The proximity switches 12 arranged around the positioning base 2 constitute a safety detection system. When the instrument panel is not fully placed into the fixture 6 or the pressure plate 3 is not closed in place, the proximity switch 12 signal is blocked and the test program is started. This mechanism prevents equipment damage or personal injury caused by misoperation. At the same time, the bottom support legs 13 ensure that the equipment is placed horizontally. The display screen 14 displays the test pressure curve and results in real time, realizing visual operation and process traceability.

[0036] like Figures 1-5As shown, the tops of the two latch pads 8 are fixedly connected with latches 15, and the front end of the positioning seat 2 is fixedly connected with two buckles 16. The two latches 15 are matched and correspond to the two buckles 16 respectively. The latch pads 8 and the buckles 16 form a double mechanical locking mechanism. When the pressure plate 3 is pressed down into place, the operator needs to manually fasten the latches 15 and the buckles 16. This design adds a physical locking function on the basis of pneumatic pressing to prevent the pressure plate 3 from being accidentally opened due to air pressure fluctuations during the test. At the same time, the latch structure conforms to the ergonomic design, which can be operated quickly with one hand, taking into account both safety protection and work efficiency.

[0037] In use, this utility model's button adhesive cover airtightness testing device achieves a precision testing process through the rotational cooperation of the positioning seat 2 and the pressure plate 3: During operation, the instrument panel to be tested is placed into the cavity 11 of the fixture 6. The fixture 6 is embedded in the second groove 4 of the positioning seat 2 and located in the third groove 5 of the pressure plate 3. The drive cylinder 702 synchronously extends and retracts, pushing the pressure plate 3 to smoothly rotate and press down along the axis of the single ear seat 10, so that the fixture 6 and the positioning seat 2 form a sealed testing space. The air intake pressure of the cylinder 702 can be adjusted to change the pressing speed and force to adapt to fixtures 6 of different heights. During the test, the proximity switch 12 detects the closing state of the pressure plate 3 and the placement position of the instrument panel in real time. If an abnormality is detected, it immediately blocks the switch. When the test program is started, after the pressure plate 3 is pressed down to the position, the buckle 15 and the latch 16 need to be manually engaged to form a double lock to prevent pressure fluctuations from causing the pressure plate 3 to open unexpectedly. The fixture 6 adopts an independent cavity design 11. By changing the fixture 6 of different sizes, it can quickly match various models of instrument panels. During the test, the internal cavity 11 of the fixture 6 is completely matched with the shape of the instrument panel to form an independent sealed environment. The equipment displays the test pressure curve and results in real time through the display screen 14. The bottom support leg 13 ensures that the equipment is placed horizontally. The entire test process can be quickly changed through the standardized fixture 6 interface. Combined with safety detection and visual operation, it improves the flexible testing capability of the production line.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A button dispensing cover airtightness testing device, comprising a fixture (1) for testing airtightness, characterized in that: The tooling (1) is equipped with a positioning seat (2), and a pressure plate (3) is rotatably connected to the top of the positioning seat (2). A second groove (4) is opened on the top of the positioning seat (2), and a third groove (5) is opened at the center of the pressure plate (3). A fixture (6) is placed in the second groove (4), and the fixture (6) is located in the third groove (5). An instrument panel for testing the air tightness is placed in the fixture (6). The rear end of the positioning seat (2) is fixedly connected to a driving mechanism (7), the front end of the driving mechanism (7) is rotatably connected to the top of the pressure plate (3), and the front end of the top of the pressure plate (3) is fixedly connected to two buckle pads (8).

2. The button dispensing cover airtightness testing device according to claim 1, characterized in that: The top rear end of the positioning seat (2) is fixedly connected to two flip-top bases (9), and each of the two flip-top bases (9) is rotatably connected to a single ear seat (10). The two single ear seats (10) are fixedly connected to the rear end of the pressure plate (3).

3. The button dispensing cover airtightness testing device according to claim 1, characterized in that: The drive mechanism (7) includes two blocks (701) fixedly connected to the rear end of the positioning seat (2). Each of the two blocks (701) is rotatably connected to a cylinder (702), and the other end of each cylinder (702) is rotatably connected to the top of the pressure plate (3).

4. The button dispensing cover airtightness testing device according to claim 1, characterized in that: The fixture (6) has a cavity (11) inside, and an instrument panel is placed inside the cavity (11).

5. The button dispensing cover airtightness testing device according to claim 1, characterized in that: The positioning base (2) is equipped with multiple proximity switches (12) around its perimeter, and multiple support legs (13) are fixedly connected to the bottom of the positioning base (2). The tooling (1) is equipped with a display screen (14) on its top.

6. The button dispensing cover airtightness testing device according to claim 1, characterized in that: The top of each of the two buckle pads (8) is fixedly connected with a second buckle (15), and the front end of the positioning seat (2) is fixedly connected with two buckles (16). The two second buckles (15) are respectively matched and correspond to the two buckles (16).

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