A cutting sampling tool for building insulation non-combustibility test

Abstract

The utility model relates to building material detection, concretely is a kind of cutting sampling tool for building thermal insulation material non-combustibility test, including circular sampler, still including L-shaped support seat and driving mechanism;Driving mechanism is located in support seat vertical section and is transmissionally connected with circular sampler to drive circular sampler vertical reciprocating movement. The automation vertical reciprocating motion of circular sampler is realized by driving mechanism, the cooperation structure of motor driving disc, guide rod and guide plate, ensure that sampler always moves along vertical direction, make the diameter, thickness etc. Parameter of sampling sample meet the requirement of test standard. The positioning mechanism of support seat horizontal section is pushed by spring and clamped plate clamps the material to be sampled, cooperate with the antiskid line on clamped plate, effectively prevent the material from sliding or warping due to cutting force in sampling process, ensure that sampling position is accurately aligned with preset area, avoid sampling deviation caused by material displacement, guarantee the reliability of subsequent non-combustibility test result.

Description

Technical Field

[0001] This utility model relates to building material testing, specifically a cutting and sampling tool for testing the non-combustibility of building insulation materials. Background Technology

[0002] The non-combustibility test of building insulation materials is a crucial step in evaluating their fire safety performance, and the quality of the sample taken before the test directly affects the accuracy of the test results. Existing sampling tools typically consist of a single circular sampler and a simple handle, lacking a stable support and drive structure. During sampling, operators must manually hold the sampler and repeatedly apply vertical pressure to cut into the insulation material (such as rock wool board, polystyrene board, etc.). For harder or thicker materials, multiple people are often required—one to hold the material and another to hold the sampler and continuously press and cut—making the process cumbersome. Therefore, in practical operation, existing sampling tools have the following inconveniences:

[0003] 1. Insufficient sampling accuracy: During manual pressing, it is difficult for operators to ensure that the sampler always moves in a vertical direction, which can easily lead to the sampler tilting, resulting in uneven sample end face and dimensional deviation (such as diameter or thickness not meeting the test standards), affecting the accuracy of subsequent tests; at the same time, manual positioning relies on visual observation, and the sampling position is prone to deviation, making it difficult to ensure that the sample is taken from the designated area of ​​the material.

[0004] 2. Low operating efficiency: The force and frequency of manual reciprocating pressing are unstable. For high-density insulation materials, a single sampling may take several minutes. Moreover, the labor intensity of operators is high when sampling continuously, and fatigue can further reduce sampling efficiency.

[0005] The aforementioned problems make it difficult for existing sampling tools to meet the requirements for sampling accuracy, efficiency, and ease of operation in the non-combustibility test of building insulation materials. Utility Model Content

[0006] The purpose of this invention is to provide a cutting and sampling tool for testing the non-combustibility of building insulation materials, thereby solving the problems mentioned in the background art regarding the low sampling accuracy, low efficiency, and inconvenient operation of existing sampling equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cutting and sampling tool for testing the non-combustibility of building insulation materials, including a circular sampler, an L-shaped support base, and a driving mechanism; the driving mechanism is located on the vertical section of the support base and is connected to the circular sampler to drive the circular sampler to move vertically back and forth.

[0008] Furthermore, the driving mechanism includes a motor mounted on one side of the vertical section of the support base, two limiting plates mounted laterally on the other side of the vertical section of the support base, a moving plate slidably connected to the two limiting plates vertically, and a disc rotatably connected to the other side of the vertical section of the support base and located between the two limiting plates; the output shaft of the motor passes through the support base and is connected to the disc, the disc is provided with a guide rod, the middle of the moving plate is integrally formed with a transverse guide plate, the guide plate is provided with a slot, the guide rod is located in the slot and slides with the slot, and the circular sampler is detachably connected to the bottom end of the moving plate.

[0009] Furthermore, a positioning mechanism is provided on the horizontal section of the support base. The positioning mechanism includes two positioning plates symmetrically arranged on the horizontal section of the support base and two sets of sliding rods respectively slidably arranged on the two positioning plates. Each set of sliding rods has a clamping plate at one end opposite to the other, and a spring is sleeved on the sliding rod and fixed between the positioning plate and the clamping plate.

[0010] Furthermore, the clamp is provided with anti-slip texture.

[0011] Furthermore, mounting holes are provided on the horizontal section of the support base.

[0012] This utility model addresses the problems of insufficient precision, cumbersome operation, and low efficiency in existing sampling tools for testing the non-combustibility of building insulation materials. By optimizing the structural design, it achieves automation, stabilization, and precision in the sampling process, with the following specific benefits:

[0013] 1. This utility model realizes the automated vertical reciprocating motion of the circular sampler through a drive mechanism. The motor drives the disk, guide rod and guide plate to cooperate to ensure that the sampler always moves in the vertical direction. This avoids the problems of uneven sample end face and size deviation caused by uneven force or directional deviation during manual operation, so that the diameter, thickness and other parameters of the sampled sample meet the test standard requirements.

[0014] 2. The positioning mechanism of the horizontal section of the support base of this utility model uses a spring to push the clamping plate to clamp the material to be sampled. With the anti-slip texture on the clamping plate, it can effectively prevent the material from sliding or warping due to the cutting force during the sampling process, ensuring that the sampling position is accurately aligned with the preset area, avoiding sampling deviation caused by material displacement, and ensuring the reliability of the subsequent non-flammability test results.

[0015] 3. The driving mechanism of this utility model replaces the traditional manual pressing operation. The motor drives the sampler to automatically complete the vertical reciprocating cutting action without the need for the operator to continuously apply pressure. Especially for high-density and thick thermal insulation materials, it can significantly shorten the sampling time per sampling, solve the problem of traditional tools requiring multiple people to cooperate or long-term laborious operation, and improve sampling efficiency. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present utility model.

[0017] Figure 2 This is a rear view of the present invention.

[0018] In the picture:

[0019] 1. Circular sampler; 2. Support base; 3. Motor; 4. Limiting plate; 5. Moving plate; 6. Disc; 7. Guide rod; 8. Guide plate; 9. Positioning plate; 10. Slide rod; 11. Clamping plate; 12. Spring; 13. Mounting hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe them in conjunction with specific embodiments and appendices. Figure 1-2 The present invention will be further described in detail below.

[0021] This utility model discloses a cutting and sampling tool for testing the non-combustibility of building insulation materials, aiming to solve the problems of low sampling efficiency and insufficient accuracy in the non-combustibility testing of building insulation materials. The tool consists of three core parts: a circular sampler 1, an L-shaped support base 2, and a drive mechanism. The drive mechanism is connected to the circular sampler 1 and can drive it to move vertically back and forth to complete the sampling operation. The L-shaped support base 2 provides stable support for the overall structure, and its horizontal section is also equipped with a positioning mechanism for fixing the insulation material to be sampled.

[0022] The L-shaped support 2 is integrally formed or welded from high-strength metal materials (such as aluminum alloy or carbon steel), and consists of a horizontal section and a vertical section. The horizontal section serves as a sample placement platform, with a smooth and flat surface. It has 2-4 through-holes 13 evenly distributed along the edge of the horizontal section. Bolts passing through the mounting holes 13 can fix the support 2 to the operating table or test bench, preventing displacement due to vibration during sampling. The vertical section is vertically connected to one end of the horizontal section and is used to install the drive mechanism.

[0023] The drive mechanism is installed on one side of the vertical section of the support base 2 to drive the circular sampler 1 to achieve vertical reciprocating motion. Specifically, it includes a motor 3, a limiting plate 4, a moving plate 5, a disc 6, a guide rod 7, and a guide plate 8. The motor 3 is a self-locking stepper motor with a power of 500-1000W, installed on one side of the vertical section of the support base 2 (the side opposite to the sampling operation). The motor 3 is fixed to a pre-set motor mounting base on the vertical section with bolts. Its output shaft passes horizontally through a pre-set through hole in the vertical section of the support base 2 and connects to the disc 6 on the other side. The power supply of the motor 3 can be adapted to the power supply system of the testing site (connected to 220V AC via an electrical control box), or, in scenarios without an external power source, powered by a battery in a pre-set battery compartment on the back of the support base 2, with a battery capacity of not less than 12V / 10Ah. The limiting plates 4 are two long strip-shaped metal plates, made of the same material as the support base, and are horizontally fixed to the other side of the vertical section of the support base 2 (facing the sampling operation side) by bolts, and are arranged vertically in parallel. Vertical grooves are formed on the inner sides of both limiting plates 4, the width of which is adapted to the thickness of the moving plate 5, to guide and limit the vertical sliding of the moving plate 5. The moving plate 5 is a rectangular metal plate, with its two edges embedded in the grooves of the limiting plates 4 (one side of the groove is fixed by bolts, such as...). Figure 1 As shown, the sliding plate 5 can slide vertically back and forth along the groove. The bottom of the sliding plate 5 is equipped with a sampler mounting structure (such as an internal threaded hole or a snap-fit ​​assembly) for detachable connection with the circular sampler 1, facilitating the replacement of circular samplers 1 with different diameters (commonly 50mm and 75mm) according to experimental requirements. The disc 6 is a circular metal disc with a diameter of 80-120mm, rotatably connected to the other side of the vertical section of the support base 2 via bearings, and located between the two limiting plates 4. The center of the disc 6 is connected to the output shaft of the motor 3 via a key or coupling, allowing the motor 3 to drive the disc 6 to rotate synchronously when started. The guide rod 7 is a cylindrical metal rod, vertically fixed at the edge of the disc 6 (offset from the center of the disc), with a diameter of 8-12mm. The guide plate 8 is a laterally extending metal plate, integrally formed with the middle of the sliding plate 5. A groove along the length of the guide plate 8 is opened in the middle, with the groove width slightly larger than the diameter of the guide rod 7. The end of the guide rod 7 away from the disc 6 is embedded in the groove and slides against the inner wall of the groove. When the disc 6 rotates, the guide rod 7 moves circumferentially, pushing the guide plate 8 through the groove and causing the moving plate 5 to move vertically back and forth along the limiting plate 4.

[0024] The positioning mechanism is located on the upper surface of the horizontal section of the support base 2 to fix the building insulation material to be sampled. It specifically includes a positioning plate 9, a sliding rod 10, a clamping plate 11, and a spring 12. The positioning plate 9 consists of two rectangular metal plates, symmetrically welded or bolted to the upper surface of the horizontal section of the support base 2, located directly below the circular sampler 1 on both sides. The distance between them is set to 200-300mm depending on the size of common insulation materials. Each positioning plate 9 has 2-3 through holes along the horizontal direction. The sliding rod 10 is a cylindrical metal rod that passes through the through holes and slides within them. The length of the sliding rod 10 is 150-200mm, with one end extending outward from the positioning plate 9 as the operating end, and the other end facing the sampling area. The clamping plate 11 is an arc-shaped or rectangular metal plate with an anti-slip rubber pad attached to its inner side. The surface of the rubber pad has a grid-like anti-slip texture to enhance friction with the insulation material. The clamping plate 11 is bolted to the opposite ends of the two sets of sliding rods 10. Spring 12 is sleeved on slide rod 10 and located between positioning plate 9 and clamping plate 11. In its natural state, it is slightly compressed, and the elastic force pushes clamping plate 11 towards the center to clamp and fix insulation materials of different widths. When it is necessary to place or remove a sample, the operating end of slide rod 10 is pulled outward, spring 12 is further compressed, the distance between clamping plates 11 increases, and after the sample is placed, the operating end is released, spring 12 returns to its original position, and clamping plate 11 clamps the sample.

[0025] It should be further noted that the circular sampler, spring and other components involved in this device are all commercially available and mature products. You can simply purchase the finished product. The specific model and specifications can be selected according to the application scenario. The staff does not need to understand its specific structure and working principle. As long as the product can be used normally, it will not affect the specific implementation of this utility model. Therefore, it will not be described in detail here.

[0026] The specific work process is as follows:

[0027] Secure the entire tool to the test workbench using bolts through the mounting holes 13 on the horizontal section of the support base 2, ensuring that the vertical section of the support base 2 is perpendicular to the workbench and does not wobble. Then, select a circular sampler 1 of the corresponding diameter according to the sample size required for the test, and fix it through the mounting structure at the bottom of the moving plate 5 to ensure a firm connection.

[0028] Pull the operating ends of the sliding rods 10 outward to increase the distance between the clamping plates 11. Place the building insulation material to be sampled (such as rock wool board, polystyrene board, etc.) on the horizontal section of the support base 2, with the sampling position aligned directly below the circular sampler 1. Release the sliding rods 10, and the spring 12 will return to its original position, pushing the clamping plates 11 to clamp the material. The anti-slip texture ensures that the material does not shift during the sampling process.

[0029] Connect the power supply to motor 3 and start motor 3 via the control panel or remote control switch. The output shaft of motor 3 drives the disc 6 to rotate, and the guide rod 7 on the disc 6 moves circumferentially. Through sliding engagement with the groove of guide plate 8, it pushes the moving plate 5 to move vertically reciprocating along the slide groove of limit plate 4. When the moving plate 5 moves downward, the circular sampler 1 contacts and cuts the insulation material, completing the sampling; when the moving plate 5 moves upward, the sampler detaches from the material, waiting for the next cut (the operation can be repeated if continuous sampling is required).

[0030] After sampling is complete, turn off motor 3. The motor's self-locking function keeps the moving plate 5 in the upper position to prevent the sampler from falling accidentally. Pull the slide bar 10 outward to remove the sampled insulation material and take the sample out of the sampler.

[0031] This invention achieves automated vertical reciprocating motion of the sampler through a drive mechanism, and with the stable clamping of the positioning mechanism, it effectively improves the efficiency and accuracy of sampling for non-combustible testing of building insulation materials. It also features a simple structure, convenient operation, and is suitable for sampling scenarios of various building insulation materials.

Claims

1. A cutting and sampling tool for testing the non-combustibility of building insulation materials, comprising a circular sampler (1), characterized in that, It also includes an L-shaped support base (2) and a driving mechanism; the driving mechanism is located on the vertical section of the support base (2) and is connected to the circular sampler (1) to drive the circular sampler (1) to move vertically back and forth.

2. The sampling tool as described in claim 1, characterized in that, The driving mechanism includes a motor (3) on one side of the vertical section of the support base (2), two limiting plates (4) on the other side of the vertical section of the support base (2), a moving plate (5) slidably connected to the two limiting plates (4) vertically, and a disc (6) rotatably connected to the other side of the vertical section of the support base (2) and located between the two limiting plates (4); the output shaft of the motor (3) passes through the support base (2) and is connected to the disc (6); the disc (6) is provided with a guide rod (7); the middle part of the moving plate (5) is integrally formed with a horizontal guide plate (8); the guide plate (8) is provided with a slot; the guide rod (7) is located in the slot and slides with the slot; the circular sampler (1) is detachably connected to the bottom end of the moving plate (5).

3. The sampling tool as described in claim 2, characterized in that, The support base (2) is provided with a positioning mechanism on the horizontal section. The positioning mechanism includes two positioning plates (9) symmetrically arranged on the horizontal section of the support base (2) and two sets of sliding rods (10) respectively slidably arranged on the two positioning plates (9). Each set of sliding rods (10) is provided with a clamping plate (11) at one end opposite to the other. A spring (12) is sleeved on the sliding rod (10) and fixed between the positioning plate (9) and the clamping plate (11).

4. The sampling tool as described in claim 3, characterized in that, The clamp (11) is provided with anti-slip texture.

5. The sampling tool as described in claim 1, characterized in that, The support base (2) has mounting holes (13) on its horizontal section.

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