A polyurethane foam caulk flame retardancy testing device

Abstract

The utility model discloses a kind of polyurethane foam joint filling agent flame retardance testing device, including test box, the clamping mechanism is equipped in the top of test box, clamping mechanism is used to clamp sample bubble block, and combustion mechanism is equipped in the bottom of test box;Combustion mechanism includes a set of opposite fixed plate, stepper motor, rotating screw rod, sliding screw nut, fixed round bar, sliding shaft sleeve, sliding seat and pulse electronic ignition gun.The beneficial effects of the utility model are that clamping mechanism is used to clamp sample bubble block, combustion mechanism uses stepper motor to drive pulse electronic ignition gun to automatically ignite sample bubble block multiple times, and after ignition, it is removed, records the natural time of each sample bubble block, to carry out flame retardance test, and safety performance is higher, and it is convenient to test use.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane foam sealant technology, specifically to a flame retardancy testing device for polyurethane foam sealant. Background Technology

[0002] Currently, most polyurethane foam sealants on the market are non-flame retardant, which can increase the fire in the event of an accident, affecting people's safety and property. Flame retardant polyurethane foam sealants can achieve a fire resistance rating of B1 and have a good flame retardant effect.

[0003] Flame retardancy testing of polyurethane foam sealant is a crucial step in ensuring the safe use of the material in building applications. This testing not only helps assess the material's performance in fire conditions but also provides essential data support for building design to meet relevant regulatory requirements. Currently, the flame retardancy testing of polyurethane foam sealant requires multiple manual ignition attempts, which is cumbersome and poses certain safety hazards, affecting the test's usability. Utility Model Content

[0004] To address the above deficiencies, this utility model provides a flame retardancy testing device for polyurethane foam sealant, thereby solving the ignition problem in the flame retardancy testing of polyurethane foam sealant.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flame retardancy testing device for polyurethane foam sealant includes a test chamber, a clamping mechanism at the top of the test chamber for clamping the sample foam block, and a combustion mechanism at the bottom of the test chamber.

[0007] The combustion mechanism includes a set of relatively fixed plates, a stepper motor, a rotating lead screw, a sliding lead screw nut, a fixed round rod, a sliding bushing, a sliding seat, and a pulse electronic ignition gun. The set of relatively fixed plates is installed on both sides of the bottom of the test chamber. The stepper motor is installed on the right fixed plate. The rotating lead screw is movably inserted into the front end of the set of relatively fixed plates, and its right end is connected to the rotating end of the stepper motor. The sliding lead screw nut is fitted on the rotating lead screw. The fixed round rod is installed at the rear end of the set of relatively fixed plates. The sliding bushing is movably fitted on the fixed round rod. The sliding seat is installed between the sliding lead screw nut and the sliding bushing. The pulse electronic ignition gun is inclinedly installed on the upper end of the sliding seat.

[0008] Furthermore, the clamping mechanism includes a horizontal plate, a rotary motor, a rotating shaft, a set of opposing external threads, a set of nuts, a set of n-shaped plates, and a set of clamping claws. The horizontal plate is installed at the top of the test chamber, the rotary motor is installed at the bottom rear end of the horizontal plate, the two ends of the rotating shaft are movably installed at the rear end of the horizontal plate, a set of opposing external threads are tapped on both sides of the outer surface of the rotating shaft, a set of nuts is fitted on the set of opposing external threads, a set of n-shaped plates is movably fitted on the horizontal plate and its rear end is connected to a set of nuts, and a set of clamping claws is installed at the front end of a set of n-shaped plates. The set of clamping claws realizes automatic clamping of the top of the sample bubble block, which is convenient for subsequent flame retardancy testing.

[0009] Furthermore, the rotating end of the rotary motor is connected to the shaft via a transmission belt to achieve shaft transmission.

[0010] Furthermore, a fixed slide rail is installed at the front end of the horizontal plate, and a set of n-shaped plates are slidably installed on the fixed slide rail to serve as guides.

[0011] Furthermore, the rear end of the pulse electronic ignition gun is connected to an external gas pipeline, and gas combustion is used.

[0012] Furthermore, a combustion particle collection box is placed between a set of relatively fixed plates. The particles generated during combustion fall into the combustion particle collection box for easy cleaning.

[0013] This utility model provides a flame retardancy testing device for polyurethane foam sealant, which has the following advantages: the clamping mechanism is used to clamp the sample foam block, and the combustion mechanism uses a stepper motor to drive a pulse electronic ignition gun to automatically ignite the sample foam block multiple times. After ignition, the device is removed and the natural time of each sample foam block is recorded to perform flame retardancy testing. This device has higher safety performance and is convenient for testing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a flame retardancy testing device for polyurethane foam sealant according to the present invention.

[0015] Figure 2 This is a top view of the test chamber described in this utility model.

[0016] Figure 3 This is a top view of the combustion mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the pulse electronic ignition gun described in this utility model.

[0018] Figure 5 This is a rear view of the horizontal plate described in this utility model.

[0019] Figure 6 This is a top view of the horizontal plate described in this utility model.

[0020] In the diagram: 1. Test chamber; 2. Fixing plate; 3. Stepper motor; 4. Rotating lead screw; 5. Sliding lead screw nut; 6. Fixed round rod; 7. Sliding bushing; 8. Sliding seat; 9. Pulse electronic ignition gun; 10. Horizontal plate; 11. Rotary motor; 12. Rotating shaft; 13. External thread; 14. Lead screw nut; 15. N-type plate; 16. Clamping claw; 17. Transmission belt; 18. Fixed slide rail; 19. Combustion particle collection box. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] Please see Figures 1 to 6 As shown in the embodiment of this application, a flame retardancy testing device for polyurethane foam sealant is provided, including a test chamber 1. A clamping mechanism is provided at the top of the test chamber 1 to clamp the sample foam block. A combustion mechanism is provided at the bottom of the test chamber 1. The combustion mechanism includes a set of relatively fixed plates 2, a stepper motor 3, a rotating screw 4, a sliding screw nut 5, a fixed round rod 6, a sliding bushing 7, a sliding seat 8, and a pulse electronic ignition gun 9. The set of relatively fixed plates 2 is installed on both sides of the bottom of the test chamber 1. The stepper motor 3 is installed on the right fixed plate 2. The two ends of the rotating screw 4 are movably inserted into the front end of the set of relatively fixed plates 2 through bearings, and the right end is connected to the rotating end of the stepper motor 3. The sliding screw nut 5 is fitted on the rotating screw 4. The fixed round rod 6 is installed at the rear end of the set of relatively fixed plates 2. The sliding bushing 7 is movably fitted on the fixed round rod 6. The sliding seat 8 is installed between the sliding screw nut 5 and the sliding bushing 7. The pulse electronic ignition gun 9 is inclinedly installed on the upper end of the sliding seat 8.

[0023] In this embodiment, the top of the sample bubble is clamped and fixed by a clamping mechanism. Then, the stepper motor 3 rotates forward, driving the pulse electronic ignition gun 9 to move to the bottom of the sample bubble via the sliding seat 8. Then, the pulse electronic ignition gun 9 ignites the sample bubble. The stepper motor 3 rotates in reverse, driving the sliding seat 8 and the pulse electronic ignition gun 9 to return to the right side. The natural time of the sample bubble is recorded each time. The above actions are repeated 2-3 times to determine the flame retardancy of the polyurethane foam sealant.

[0024] In some embodiments, the clamping mechanism includes a horizontal plate 10, a rotary motor 11, a rotating shaft 12, a set of opposing external threads 13, a set of thread nuts 14, a set of n-shaped plates 15, and a set of clamping claws 16. The horizontal plate 10 is installed at the top inside the test chamber 1, the rotary motor 11 is installed at the bottom rear end of the horizontal plate 10, the two ends of the rotating shaft 12 are movably installed at the rear end of the horizontal plate 10 through bearings, a set of opposing external threads 13 are tapped on both sides of the outer surface of the rotating shaft 12, a set of thread nuts 14 are fitted on the set of opposing external threads 13, a set of n-shaped plates 15 are movably fitted on the horizontal plate 10 and the rear end is connected to the set of thread nuts 14, and a set of clamping claws 16 are installed at the front end of the set of n-shaped plates 15.

[0025] and collection of appendices Figure 5 and attached Figure 6 As shown, the rotary motor 11 drives the rotating shaft 12 to rotate, causing a set of wire nuts 14 to move relative to each other. The sample bubble is automatically clamped by a set of n-shaped plates 15 and a set of clamping claws 16, which facilitates subsequent flame retardancy testing.

[0026] In some embodiments, the rotating end of the rotary motor 11 is connected to the rotating shaft 12 via a transmission belt 17 to achieve the transmission of the rotating shaft 12.

[0027] In some embodiments, a fixed slide rail 18 is installed at the front end of the horizontal plate 10, and a set of n-shaped plates 15 are slidably installed on the fixed slide rail 18 at their front ends to serve as guides.

[0028] In some embodiments, the rear end of the pulse electronic ignition gun 9 is connected to an external gas pipeline, and gas combustion is used.

[0029] In some embodiments, a combustion particle collection box 19 is placed between a set of relatively fixed plates 2, and the particles generated by combustion fall into the combustion particle collection box 19 for easy cleaning.

[0030] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A polyurethane foam caulk flame retardancy test apparatus comprising a test cabinet (1), characterized in that, The test chamber (1) is equipped with a clamping mechanism at the top, which is used to clamp the sample bubble block. The test chamber (1) is equipped with a combustion mechanism at the bottom. The combustion mechanism includes a set of relatively fixed plates (2), a stepper motor (3), a rotating screw (4), a sliding screw nut (5), a fixed round rod (6), a sliding bushing (7), a sliding seat (8), and a pulse electronic ignition gun (9). The set of relatively fixed plates (2) is installed on both sides of the bottom inside the test chamber (1). The stepper motor (3) is installed on the right fixed plate (2). The rotating screw (4) is movably inserted into the front end of the set of relatively fixed plates (2), and its right end is connected to the rotating end of the stepper motor (3). The sliding screw nut (5) is fitted on the rotating screw (4). The fixed round rod (6) is installed at the rear end of the set of relatively fixed plates (2). The sliding bushing (7) is movably fitted on the fixed round rod (6). The sliding seat (8) is installed between the sliding screw nut (5) and the sliding bushing (7). The pulse electronic ignition gun (9) is installed obliquely on the upper end of the sliding seat (8).

2. A polyurethane foam caulk flame resistance test device according to claim 1, wherein, The clamping mechanism includes a horizontal plate (10), a rotary motor (11), a rotating shaft (12), a set of opposing external threads (13), a set of thread nuts (14), a set of n-shaped plates (15), and a set of clamping claws (16). The horizontal plate (10) is installed at the top inside the test box (1). The rotary motor (11) is installed at the bottom of the rear end of the horizontal plate (10). The two ends of the rotating shaft (12) are movably installed at the rear end of the horizontal plate (10). A set of opposing external threads (13) are tapped on both sides of the outer surface of the rotating shaft (12). A set of thread nuts (14) are fitted on a set of opposing external threads (13). A set of n-shaped plates (15) are movably fitted on the horizontal plate (10) and connected to a set of thread nuts (14) at the rear end. A set of clamping claws (16) is installed at the front end of a set of n-shaped plates (15).

3. The flame retardancy testing device for polyurethane foam sealant according to claim 2, characterized in that, The rotating end of the rotary motor (11) is connected to the rotating shaft (12) via a transmission belt (17).

4. The flame retardancy testing device for polyurethane foam sealant according to claim 2, characterized in that, The front end of the horizontal plate (10) is equipped with a fixed slide rail (18), and the front end of a set of n-shaped plates (15) is slidably mounted on the fixed slide rail (18).

5. The flame retardancy testing device for polyurethane foam sealant according to claim 1, characterized in that, The rear end of the pulse electronic ignition gun (9) is connected to an external gas pipeline.

6. The flame retardancy testing device for polyurethane foam sealant according to claim 1, characterized in that, A combustion particle collection box (19) is placed between a set of relatively fixed plates (2).

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