Grouting mold for manufacturing high polymer test pieces with different densities

Abstract

The utility model discloses a grouting mold for manufacturing high polymer test pieces with different densities, and relates to the field of high polymer grouting molds. The mold mainly comprises a top cover, a left side baffle, a right side baffle, a middle left side baffle, a middle right side baffle, a front baffle, a rear baffle and a bottom plate. Four nuts, a grouting hole plug and a grouting hole are arranged on the top cover; the middle left baffle and the middle right baffle are respectively provided with a baffle hole; grooves are formed in the front and rear baffles; the die bottom plate is provided with a pressure sensor and a base fixing nut. The top cover, the baffles and the bottom plate are fixedly connected through screws, nuts and base fixing nuts, and the middle baffles are mechanically connected through grooves. The device is suitable for manufacturing high-viscosity and high-expansibility high polymer grouting material test pieces, demolding and cleaning are easy after grouting is completed, a plurality of test pieces can be poured at a time, and smoothness is good; and the bottom plate pressure sensor is used for controlling the grouting quality and density. The formed test piece can be used for experiments of mechanical properties such as compressive strength and bending strength.

Description

Technical Field

[0001] This utility model patent discloses a grouting mold for making polymer specimens of different densities, which relates to the field of polymer grouting molds. Background Technology

[0002] Polymer grouting material is a type of expandable rigid foam plastic. Its two-component raw materials undergo rapid polymerization, resulting in high expansion, rapid setting, waterproofing, lightweight, high strength, and environmental friendliness. Therefore, it is widely used in projects such as grouting repair of underground road defects, lifting subsided structures, sealing underground leaks, and reinforcing cracked dams. To evaluate the engineering repair effect of polymer grouting materials, it is necessary to prepare test specimens to measure their compressive strength, tensile strength, and flexural strength. However, polymer grouting materials have high adhesion; during specimen casting, they adhere to the mold surface, making mold removal and demolding difficult. Furthermore, the high expansion of polymer grouting materials can lead to leakage if the mold is not properly sealed, making it impossible to produce satisfactory polymer specimens. Additionally, it is difficult to control the grouting quality and density during the grouting process. Therefore, it is necessary to design a grouting mold for making polymer specimens of different densities. The mold should be easy to assemble and disassemble, easy to demold, have good sealing performance, and be able to cast polymer specimens of different densities. Utility Model Content

[0003] The purpose of this utility model patent is to provide a grouting mold for producing polymer specimens of different densities. The mold components are mechanically connected by grooves and secured by nuts, screws, and a base fixing nut, making assembly and disassembly convenient and allowing for easy demolding after grouting. Holes are provided on the left and right middle baffles, allowing for the simultaneous casting of three specimens. A pressure sensor on the base plate controls the grouting quality and density, enabling the production of polymer grouting material specimens of different densities.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A grouting mold for fabricating polymer specimens of different densities includes a mold top cover, mold baffles, and a mold bottom plate. The mold baffles consist of a front baffle, a rear baffle, a left side baffle, a right side baffle, a middle left side baffle, and a middle right side baffle. The middle left and middle right side baffles each have openings. Before grouting, the front, rear, left, right, and middle baffles are assembled onto the mold bottom plate. The mold top cover, mold baffles, and mold top plate are fixedly connected by nuts and bolts. Grouting holes are provided on the mold top cover, through which grouting equipment injects polymer into the assembled mold. During grouting, a pressure sensor on the mold bottom plate monitors the quality of the injected polymer grouting material to obtain the required polymer specimen density for testing. After grouting, the grouting holes are plugged, and the polymer grouting material reacts and solidifies within the mold. The solidified polymer specimens can be used to study the compressive strength, flexural strength, and bending strength of polymer grouting materials of different densities.

[0006] As a further improvement of this utility model, the front baffle, rear baffle, left baffle, right baffle, middle left baffle, and middle right baffle of the mold are mechanically connected by grooves, which makes them easy to assemble and disassemble.

[0007] As a further improvement of this utility model, the mold can be sprayed with a special release agent before casting the polymer grouting material specimen, making it easy to demold.

[0008] As a further improvement of this utility model: the mold top cover and the mold bottom plate are fixedly connected by nuts, screws and base fixing nuts, so that the mold will not deform and fall apart during the polymer grouting expansion process.

[0009] As a further improvement of this utility model: a grouting hole is provided above the top cover of the mold, and the hole is sealed with a grouting hole plug after grouting is completed.

[0010] As a further improvement of this utility model: the middle baffle of the mold is provided with a baffle hole, which can cast three polymer specimens at one time.

[0011] As a further improvement of this utility model, a pressure sensor is provided on the mold base plate, which can control the grouting quality and grouting density during the grouting process.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, all components are mechanically connected by grooves, making disassembly and assembly convenient and easy to demold. The mold top cover and mold bottom plate are fixed by nuts, screws, and base fixing nuts, ensuring good sealing. The intermediate baffle has baffle holes, allowing multiple specimens to be cast at once. A pressure sensor is installed on the mold bottom plate, which can monitor the polymer quality during the grouting process. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall polymer injection mold;

[0014] Figure 2 This is a schematic diagram of the cross-section of the mold;

[0015] Figure 3 Schematic diagram of the left and right baffles;

[0016] Figure 4 A schematic diagram of the middle left and middle right baffles;

[0017] Figure 5 This is a schematic diagram of the front and rear baffles.

[0018] In the diagram: 1-Nut, 2-Grouting hole plug, 3-Grouting hole, 4-Mold top cover, 5-Screw, 6-Rear baffle, 7-Middle left baffle, 8-Middle right baffle, 9-Left baffle, 10-Baffle hole, 11-Right baffle, 12-Pressure sensor, 13-Mold base plate, 14-Front baffle, 15-Base fixing nut. Detailed Implementation

[0019] Please refer to Figures 1-5 In this embodiment of the invention, a grouting mold for fabricating polymer specimens of different densities includes a mold top cover 4, a mold baffle 6, and a mold base plate 13. Before grouting, the front, back, left, right, and middle baffles of the mold need to be assembled onto the mold base plate 13. The mold top cover 4, mold baffle 6, and mold base plate 13 are fixedly connected by nuts 1 and screws 5. A grouting hole 3 is provided on the mold top cover, and the grouting equipment injects polymer into the assembled mold through the grouting hole 3. During the grouting process, the quality of the injected polymer grouting material is monitored by a pressure sensor 12 provided on the mold base plate to obtain the required polymer specimen density for the test. After grouting is completed, the grouting hole 3 is plugged with a grouting hole plug 2, and the polymer grouting material reacts and solidifies in the mold.

[0020] exist Figure 1 In the middle: the mold top cover 4 and the mold bottom plate 13 are fixedly connected by nuts 1 and screws 5.

[0021] exist Figure 2 In the middle: The top cover 4 of the mold is provided with a grouting hole 3. After the grouting is completed, the grouting hole plug 2 is used for sealing.

[0022] exist Figure 2 In the middle: A pressure sensor 12 is installed on the mold base plate 13 to monitor the density of the polymer material during the grouting process.

[0023] exist Figure 4 In the middle: Holes 10 are set on the middle baffles 7 and 8 of the mold, so that multiple specimens can be cast at one time during the grouting process.

[0024] exist Figure 5 In the middle: the various baffle components 6, 7, 8, 9, 11, and 14 of the mold are mechanically connected by grooves.

[0025] A grouting mold for manufacturing polymer specimens of different densities, characterized in that it employs the grouting mold according to any one of claims 1-6, and includes the following steps:

[0026] S1: Use nut 1, screw 5 and base fixing nut 15 to fix and connect mold top cover 4, mold rear baffle 6, mold front baffle 14 and mold bottom plate 13.

[0027] S2: Based on the combined structure obtained in step S1, the left baffle 9, the right baffle 11, the middle left baffle 7 and the middle right baffle 8 are mechanically assembled and connected using the grooves provided on the front baffle 14 and the rear baffle 6.

[0028] S3: The grouting equipment injects the polymer into the grouting mold of the polymer specimen obtained in step S2 through the grouting hole 3;

[0029] S4: The pressure sensor 12 set on the mold base plate 13 precisely controls the mass of the polymer grouting material injected in step S3, thereby obtaining the required polymer specimen density for the test, and obtaining three polymer specimens at once through the baffle hole 10;

[0030] S5: After completing step S4, plug the grouting hole 3 with grouting hole plug 2, and the polymer grouting material reacts and forms in the mold;

[0031] S6: Demold the polymer specimen obtained in step S5, and then conduct subsequent mechanical property tests on the polymer specimen, such as compressive strength and flexural strength.

Claims

1. A grouting mold for manufacturing polymer specimens of different densities, characterized in that, Includes nut (1), grouting hole plug (2), grouting hole (3), mold top cover (4), screw (5), rear baffle (6), middle left baffle (7), middle right baffle (8), left baffle (9), baffle hole (10), right baffle (11), pressure sensor (12), mold base plate (13), front baffle (14), and base fixing nut (15).

2. The grouting mold for manufacturing polymer specimens of different densities according to claim 1, characterized in that, A grouting hole (3) and a grouting hole plug (2) are provided above the mold top cover (4).

3. A grouting mold for fabricating polymer specimens of different densities according to claim 1, characterized in that, The mold top cover (4) and the mold bottom plate (13) are connected by screws (5), nuts (1) and bottom plate fixing nuts (15).

4. A grouting mold for manufacturing polymer specimens of different densities according to claim 1, characterized in that, The rear baffle (6), the middle left baffle (7), the middle right baffle (8), the left baffle (9), the right baffle (11) and the front baffle (14) are mechanically connected by grooves and fixed by screws (5).

5. A grouting mold for manufacturing polymer specimens of different densities according to claim 1, characterized in that, Baffle holes (10) are provided in the middle left baffle (7) and the middle right baffle (8).

6. A grouting mold for manufacturing polymer specimens of different densities according to claim 1, characterized in that, A pressure sensor (12) is installed above the mold base plate (13).

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