CN204855225U - A quick detachable die set for preparing similar material test block - Google Patents

Abstract

The utility model discloses an easily disassembled mold device for preparing test blocks of similar materials, comprising: a molding mold for similar materials and a material filling device, wherein the molding mold for similar materials includes: a base, several strip-shaped resin molds and side plates; The material filling device includes an air pump, a conduit, a storage tank, a stirring blade and a transmission shaft arranged inside the storage tank, the conduit communicates with the storage tank and a valve is arranged on the conduit. The advantage is that the mold device of the present utility model includes a similar material forming mold and a material filling device, which realizes the integrated operation of making and connecting small-sized similar samples, reduces the link of grinding samples, and is beneficial to reduce the The error caused by the inhomogeneity of the sample material and the insufficient accuracy of the geometric shape improves the reliability of the mechanical parameters, and greatly reduces the test cost while improving the dimensional accuracy of the sample.

Description

An easily removable mold device for preparing test blocks of similar materials

technical field

The utility model relates to the preparation of similar material samples in rock mechanics model tests, in particular to an easily detachable mold device for preparing similar material test blocks.

Background technique

The sample preparation of similar materials in the rock mechanics model test in the prior art is to prepare small modules of different shapes and sizes through mold splicing and assembly, and after a period of maintenance, these small modules are evenly connected into one body by bonding and other methods , and then grinding to finally obtain a sample whose geometric size meets the test requirements. Such a manufacturing method is likely to cause errors due to the inhomogeneity of the sample and insufficient precision of the geometric shape, and the manufacturing process is also relatively complicated, time-consuming and labor-intensive.

Utility model content

In order to solve the deficiencies of the prior art, the purpose of this utility model is to provide an easy-to-detach mold device for preparing test blocks of similar materials, and realize one-step operation of making and connecting small-sized samples.

In order to achieve the above object, the utility model adopts the following technical solutions:

An easy-to-disassemble mold device for preparing a similar material test block, comprising: a similar material forming mold and a material filling device, wherein the similar material forming mold includes: a base, several strip-shaped resin molds and side plates, the base A first groove and a second groove are formed on it, the strip-shaped resin mold is fixed in the first groove and divides the space on the base into several similar shapes, and the side plate is fixed in the second groove to The space above the base is surrounded; the material filling device includes an air pump, a conduit, a storage tank, a stirring blade and a transmission shaft arranged inside the storage tank, and the conduit communicates with the storage tank and a valve is provided on the conduit.

Preferably, the aforementioned storage tank is installed on a fixed frame, and the fixed frame is connected with a lifting device.

Specifically, the cross-sectional shape of the strip-shaped resin mold is a trident, which divides the space on the base into several regular hexagons.

Further, a protrusion matching the second groove is formed on the bottom of the aforementioned side plate, and the height of the protrusion is 20mm.

As a specific embodiment of the present utility model, the shape of the aforementioned base is square, and the number of the side plates is four.

As another specific embodiment of the present utility model, the shape of the aforementioned base is circular, and the number of the side plates is two.

Further preferably, the aforementioned storage tank is made of alloy material, which has good wear resistance and corrosion resistance.

The utility model is beneficial in that: the mold device of the utility model includes a similar material forming mold and a material filling device, which realizes the integrated operation of making and connecting small-sized similar samples, reduces the link of grinding samples, and is beneficial to The error caused by the inhomogeneity of the material of the sample and the insufficient precision of the geometric shape are reduced, the reliability of the mechanical parameters is improved, and the test cost is greatly reduced while improving the dimensional accuracy of the sample.

Description of drawings

Fig. 1 is the structural representation of the similar material forming mold of the mold device of embodiment 1 of the present utility model;

Fig. 2 is a top view of the base in the embodiment shown in Fig. 1;

Fig. 3 is the structural representation of base and side plate in the molding die of similar material of embodiment 2 of the present utility model;

Fig. 4 is a top view of the base in the embodiment shown in Fig. 3;

Fig. 5 is a schematic structural view of the material filling device of the present invention.

The meanings of reference signs in the figure: 1. base, 2. strip resin mold, 3. side plate, 4. first groove, 5. second groove, 6. protrusion, 7. storage tank, 8 , air pump, 9, stirring blade, 10, transmission shaft, 11, conduit, 12, valve.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is made concrete introduction.

Example 1

The mold device of this embodiment includes the similar material forming mold shown in Fig. 1 and Fig. 2 and the material filling device shown in Fig. 5 . Wherein, the molding mold of similar material comprises: a base 1, a plurality of bar-shaped resin molds 2 and side plates 3, the base 1 is square, and the number of side plates 3 is 4, and the base 1 is formed with two The depth of the first groove 4 and the second groove 5 is 20mm. The first groove 4 divides the upper surface of the base 1 into several similar regular hexagons. When the strip-shaped resin mold 2 is inserted into the first groove After 4, the space above the base 1 is divided into regular hexagons; in order to facilitate the connection, a protrusion 6 matching the second groove 5 is formed on the bottom of the side plate 3, and the height of the protrusion 6 is 20mm.

The cross-sectional shape of the bar-shaped resin mold 2 is a trident, which is specifically divided into a standard trident mold installed in the middle of the base 1 with three sides of equal length and 120 degrees each, and a three-sided unequal length installed at the border of the base 1 And each is a non-standard trident mold of 120 degrees. In the present embodiment, the length of each side of the standard trident mold is 5mm, the height is 190mm, and the bottom has 20mm to be inserted in the first groove 4. Of course, it can be It can be flexibly adjusted according to the requirements of the test block, but not limited thereto.

During use, firstly apply the mold release agent evenly on the surface of each strip-shaped resin mold 2, the first groove 4 and the second groove 5 of the base 1, and the side plate 3, and then apply the release agent in the groove of the base 1 Apply vaseline on the surface connecting with the side plate 3 to prevent slurry leakage, and then vertically insert the strip-shaped resin mold 2 and the side plate 3 into the corresponding grooves to form a regular hexagonal cavity, forming a bottom and side as a whole. Material forming mold with closed sides. In order to prevent side plate 3 from loosening, it can also be further reinforced with rubber bands on its outside, and like this, the similar material forming mold is promptly assembled.

Then, use the material filling device to prepare similar material test blocks. The specific operation is: put various cements, sands, additives and water into the storage tank 7 made of alloy materials according to the design mix ratio, turn on the power, and air The pump 8 and the stirring blade 9 (driven by the transmission shaft 10) work, extend the outlet of the conduit 11 to the bottom of the cavity and open the valve 12, and use the air pressure generated by the air pump 8 to slowly press the material into the cavity, while pouring While slowly using the lifting device to lift the conduit 11, all the cavities are filled in a cycle in turn, and the material injection is completed. After the similar materials in each cavity are initially set, slowly pull out all the strip-shaped resin molds 2, and form gaps between the small-sized modules of each similar material, put the cementing material into the storage tank 7 according to the mixing ratio, and then Turn on the power supply, the air pump 8 and the stirring blade 9 (driven by the transmission shaft 10) work, place the outlet of the conduit 11 in the gap and open the valve 12, fill the gap with cementing material, put it into the curing device, and maintain it for a specified number of days. The side plate 3 and the base 1 can obtain a cube-like material test block of the required size for the test.

Example 2

The mold device of this embodiment includes the similar material forming mold shown in Fig. 3 and Fig. 4 and the material filling device shown in Fig. 5 . Its structure and operation method are roughly similar to those of Example 1, the only difference is that the shape of the base 1 is circular, the side plate 3 is two symmetrical semicircular side plates 3, and the finally obtained test piece of similar material is cylindrical .

In summary, the utility model quickly prepares cylindrical samples that can be directly used for triaxial tests and square samples for shear tests by splicing and assembling molds and combining mold release agents; Similar materials are added to the cavity of the mold to realize the integration of the production and connection process of small-sized modules, which can effectively solve the irregular shape of the sample, the uneven application of the binder and the finished product test after grinding in the preparation of the traditional similar material test block. Insufficient sample accuracy and other related problems, at the same time, through the accurate material mix ratio and high-precision molding mold, the error caused by the material inhomogeneity and insufficient geometric shape accuracy of the sample can be effectively reduced in the test, and the reliability of the mechanical parameters is improved. .

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the above-mentioned embodiments do not limit the utility model in any form, and all technical solutions obtained by means of equivalent replacement or equivalent transformation all fall within the protection scope of the utility model.

Claims (7)

1. An easy-to-disassemble mold device for preparing a similar material test block, characterized in that it comprises: a similar material forming mold and a material filling device, and the similar material forming mold comprises: a base, several strip resin molds and side plates , the base is formed with a first groove and a second groove, the strip-shaped resin mold is fixed in the first groove and divides the space on the base into several similar shapes, and the side plate is fixed on the second In the groove to surround the space above the base; the material filling device includes an air pump, a conduit, a storage tank, a stirring blade and a transmission shaft arranged inside the storage tank, the conduit is communicated with the storage tank and on the conduit A valve is provided. 2 . The easy-to-detach mold device for preparing test blocks of similar materials according to claim 1 , wherein the storage tank is mounted on a fixed frame, and the fixed frame is connected with a lifting device. 3 . 3. A kind of easily detachable mold device for preparing similar material test pieces according to claim 1, it is characterized in that, the cross-sectional shape of described bar-shaped resin mold is a trident shape, and the space on the base is divided into several regular six. polygon. 4. A kind of easy-to-disassemble mold device for preparing similar material test pieces according to claim 1, characterized in that, the bottom of the side plate is formed with a protrusion that matches the second groove, and the height of the protrusion is 20mm. 5 . The easy-to-detach mold device for preparing test blocks of similar materials according to any one of claims 1-4, characterized in that, the shape of the base is square, and the number of side plates is four. 6. An easily disassembled mold device for preparing test blocks of similar materials according to any one of claims 1-4, characterized in that, the shape of the base is circular, and the number of the side plates is two. 7. The easy-to-detach mold device for preparing test blocks of similar materials according to claim 4, wherein the storage tank is made of alloy materials.