Cement mortar mold

Abstract

The utility model provides a cement mortar mold, which belongs to the technical field of test block manufacturing devices, and comprises a rigid shell, a soft elastic mold cavity layer is detachably arranged in the rigid shell, the mold cavity layer is provided with a cavity for manufacturing a test block, and the mold cavity layer is supported and shaped by a steel shell; the rigid shell is provided with a cover body and a supporting part, the cover body is used for covering an opening of the supporting part, and the mold cavity layer is arranged on the supporting part; the mold cavity layer has a plurality of sizes and models, and a movable partition plate is arranged in the supporting part and is used for dividing the supporting part into a plurality of spaces for placing the mold cavity layer, so that a plurality of test blocks can be manufactured at one time; the technical problems that an existing mold is not prone to demolding and cleaning and prone to deformation are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of test block manufacturing devices, and in particular relates to a cement mortar mold. Background Art

[0002] Cement mortar test molds are necessary tools for cement mortar tests and are used to make test blocks for experiments. They are suitable for the molding of various cement or cement-based composite material slurries. Among them, the triple mold with a sample molding size of 40mm*40mm*160mm is the most widely used. It can simultaneously test the flexural strength and compressive strength of cement materials, providing very rich data for evaluating the mechanical behavior of materials.

[0003] The main technical process of preparing and molding using molds is to fill the fresh slurry mixed according to the specifications into the mold cavity as required within the specified time. After being fully compacted by a vibrating machine, the sample is demolded after being cured for 24 hours under appropriate or specified curing conditions, and then continued to be cured under the same curing conditions to different ages according to the experimental requirements.

[0004] Existing molds are generally made of plastic and iron. Plastic molds are generally made of integrated ABS plastic, which is relatively light and low-cost. The demolding method is an air gun (air pump), which uses gas pressure to remove the test block from the mold. The mold will not be disassembled during the demolding process and has a high reuse rate. However, due to the limited gas pressure, it is not suitable for the demolding needs of samples prepared with high-viscosity cement matrices. At the same time, ABS plastic also has certain deformation risks. If the cast test block produces a large volume expansion during the hydration process, it will also cause deformation or bring greater difficulty to demolding.

[0005] Iron molds are generally made of all-steel and are the most commonly used molds in laboratories. It consists of two end plates and four plug plates placed on a bottom plate with a baffle, and is fixed by fastening bolts and baffles against the end plates at both ends. This mold is detachable. For mortar specimens prepared with cement with very high viscosity, when using an iron triple mold, it is generally necessary to unscrew all the fixing screws during demolding, and disassemble the mold into 6 pieces before the test block can be completely removed. Although a sufficient amount of mold release oil is applied to the inside of the mold before pouring, it is still difficult to demold. After demolding, difficult-to-remove debris is often found in the grooves of the end plates. After the disassembly is completed, the mold needs to be reassembled for next use, which is too troublesome.

[0006] Moreover, with the repeated disassembly and assembly of the iron triple mold, the end plate, bottom plate and fastening bolts of the mold are worn to varying degrees. During use, it is difficult to maintain the verticality between the plug plate and the end plate. During the assembly process, due to the inaccuracy of manual combination, the matching degree between the components and the whole is gradually reduced, resulting in the inability to fit the mold components tightly. During the vibration process, the plug plate is prone to lateral sliding, resulting in deformation of the molded size of the test block, affecting the strength test. At the same time, if the cast material has good fluidity, the presence of cracks in the mold may cause the cement to flow out during the compaction process, resulting in the sample size not meeting the requirements. At the same time, when demolding the cement after molding, not only does it take too much time to demold, but in the case of high cement viscosity, the residual cement on the mold is difficult to clean and requires a large amount of water, which greatly affects the test efficiency and brings about the problem of waste of water resources.

[0007] Recently, a silicone mold has appeared on the market. Due to its soft material, the silicone mold is easy to operate when demolding, and can be demolded relatively quickly. Moreover, since the silicone surface is very smooth, it can be completely demolded even without pre-brushing mold release oil. Therefore, silicone molds are more convenient to demold and clean. They are widely promoted because they overcome the shortcomings of traditional molds that are difficult to demold and clean. However, the biggest problem with silicone molds is that they are easy to deform, resulting in large errors in the size of the test block, affecting the accuracy of the experimental data.

[0008] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0009] The utility model aims to provide a cement mortar mold to solve the technical problems that the existing mold is difficult to demould and clean and is easy to deform.

[0010] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0011] A cement mortar mold, comprising a rigid shell, a soft elastic cavity layer detachably arranged in the rigid shell, the cavity layer having a cavity for making a test block, and the cavity layer being supported and shaped by a steel shell;

[0012] The rigid shell has a cover body and a support part, the cover body is used to cover the open part of the support part, and the mold cavity layer is arranged on the support part;

[0013] The mold cavity layer has a plurality of sizes and models, and a movable partition is arranged in the support part for dividing the support part into a plurality of spaces for placing the mold cavity layers, so that a plurality of test blocks can be manufactured at one time.

[0014] As a further optimized technical solution, sliding channels are respectively arranged on the two opposite side walls of the supporting part, and the movable partition includes a longitudinal partition, and sliding blocks are respectively arranged at both ends of the longitudinal partition. The sliding blocks extend into the sliding channel to slide along the side walls of the supporting part for changing the manufacturing size of the test block.

[0015] As a further optimized technical solution, the sliding block is triangular in shape, with one angular position facing one side of the longitudinal partition, and the cross-sectional shape of the sliding channel corresponding to the portion where the sliding block extends is adapted to the sliding block.

[0016] As a further optimized technical solution, a positioning structure is provided on the longitudinal partition to fix the longitudinal partition at a set position.

[0017] As a further optimized technical solution, the positioning structure is a screw, one end of which is threadedly connected to the sliding block, and the other end passes through a sliding channel and is arranged on the outside of the supporting part. The sliding channel has an extension part that penetrates the side wall of the supporting part for the screw to slide.

[0018] As a further optimized technical solution, sliding channels are respectively arranged on the two opposite side walls of the supporting part, and the movable partition includes a longitudinal partition, and sliding blocks are respectively arranged at both ends of the longitudinal partition. The sliding blocks extend into the sliding channel to slide along the side wall of the supporting part for changing the manufacturing size of the test block. The movable partition also includes a transverse partition, and limiting structures are arranged at both ends of the transverse partition for limiting the transverse partition between the longitudinal partition or between the longitudinal partition and the side wall of the supporting part.

[0019] As a further optimized technical solution, the limiting structure is a U-shaped clamping spring sheet, and the clamping spring sheet is used to be clamped on the longitudinal partition and / or the side wall of the supporting part.

[0020] As a further optimized technical solution, the cover body is hinged on the supporting part.

[0021] As a further optimized technical solution, the opening width of the sliding channel located on the inner side wall of the supporting part is 2-5 mm.

[0022] As a further optimized technical solution, the mold cavity layer is made of silicone material.

[0023] Beneficial effect: By combining the soft elastic cavity layer with the rigid shell, the rigid shell provides support during the casting of the test block, thereby avoiding excessive deformation of the cavity layer. Casting in the cavity layer can meet the demolding and cleaning needs of high-viscosity cement slurry or high-fluidity materials, thereby solving the technical problems of easy deformation and difficult demolding of existing molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0026] Figure 2 for Figure 1 An exploded schematic diagram of the mold cavity layer and the rigid shell;

[0027] Figure 3 A partial cross-sectional schematic diagram of an embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the overall structure of another embodiment of the utility model;

[0029] Figure 5 for Figure 4 Schematic diagram of the exploded view of the cavity layer and the rigid shell. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0031] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0033] The utility model provides a cement mortar mold, which combines a rigid shell with a soft elastic mold cavity layer so that the mold can meet demoulding and cleaning requirements and ensure the size of a test block.

[0034] See the following examples for details.

[0035] Example 1

[0036] like Figure 1-3 As shown, the cement mortar mold includes a rigid shell and a soft elastic mold cavity layer 1. The rigid shell is made of steel and is not easily deformed. The rigid shell has a cover 3 and a support part 4. The cover 3 is hinged on the support part 4. The support part 4 has an open shell space. The cover 3 is used to cover the open part of the support part 4.

[0037] A soft and elastic cavity layer 1 is detachably provided in the shell space of the support part 4. The cavity layer 1 is rectangular in shape, made of silicone material, and has a cavity 101 for making test blocks. The cavity layer 1 has multiple sizes and models, so that test blocks of different sizes can be made. After the cavity layer 1 is installed in the shell space, it will be supported and shaped by the steel shell.

[0038] In this embodiment, in order to meet the needs of making test blocks of different sizes and models, the size of the shell space is made larger than the mold cavity layer 1. By setting movable partitions in the shell space, the shell space can be divided into multiple spaces for making test blocks as required.

[0039] Specifically, sliding channels 5 are respectively arranged on the two opposite side walls of the support part 4, and the movable partition includes a longitudinal partition 6. The two ends of the longitudinal partition 6 are respectively and integrally fixedly connected with sliding blocks 601. The sliding blocks 601 extend into the sliding channel 5 to slide along the side walls of the support part 4 to change the manufacturing size of the test block.

[0040] In this embodiment, the sliding block 601 is in the shape of an isosceles triangle, the sliding block 601 at the vertex position is in the shape of a triangle, and the cross-sectional shape of the sliding channel 5 corresponding to the part into which the sliding block 601 extends is adapted to the sliding block 601, wherein the opening width of the sliding channel 5 located on the inner wall of the support part 4 is 2-5mm. Due to the narrow opening width, the influence on the deformation of the mold cavity layer 1 is negligible, and thus will not affect the size of the test block.

[0041] In order to fix the longitudinal partition 6 at a set position, a positioning structure 7 is provided on the longitudinal partition 6, so that the support of the longitudinal partition 6 to the mold cavity layer 1 will be more stable.

[0042] In this embodiment, the positioning structure 7 is a screw, one end of which is threadedly connected to the sliding block 601, and the other end passes through the sliding channel 5 and is arranged on the outside of the supporting part 4. The sliding channel 5 has an extension part 501 that penetrates the side wall of the supporting part 4 for the screw to slide.

[0043] In this way, when the position of the longitudinal partition 6 needs to be moved, loosen the screws, and the screws will slide along with the longitudinal partition 6 on the two opposite side walls of the support part 4 until the required size is formed and the screws are tightened. The longitudinal partition 6 will no longer be able to move, and then the corresponding model of the cavity layer 1 is placed in it for casting. After casting, the upper cover body 3 is placed and the buckles on the cover body 3 are closed. After molding, the cavity layer 1 can be taken out.

[0044] Example 2

[0045] The difference between this embodiment and embodiment 1 is that, in this embodiment, the mold cavity layer 2 also has a square shape, and the square mold cavity layer 2 also has multiple size models. In order to produce square test blocks of different sizes, the movable partition also includes a transverse partition 8. A limiting structure 801 is provided at both ends of the transverse partition 8, which is used to limit the transverse partition 8 to the longitudinal partition 6 or between the longitudinal partition 6 and the side wall of the support part 4.

[0046] In this embodiment, the limiting structure 801 is a U-shaped clamping spring piece, which is used to clamp on the longitudinal partition 6 and / or the side wall of the support part 4. The clamping spring piece is relatively thin and will not affect the normal function of other spaces and the cover 3.

[0047] Thus, in this embodiment, the mold can simultaneously produce test blocks of different shapes and sizes. During production, it is only necessary to fix the transverse partition 8 and the longitudinal partition 6 to different positions, and then place the corresponding mold cavity layer 2 thereon.

[0048] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A cement mortar mold, characterized in that: It comprises a rigid shell, wherein a soft elastic cavity layer (1, 2) is detachably arranged in the rigid shell, the cavity layer (1, 2) has a cavity (101, 201) for making a test block, and the cavity layer (1, 2) is supported and shaped by the steel shell; The rigid shell comprises a cover body (3) and a support part (4), the cover body (3) is used to cover the open part of the support part (4), and the mold cavity layers (1, 2) are arranged on the support part (4); The mold cavity layer has multiple sizes and models, and a movable partition is arranged in the support part (4) for dividing the support part (4) into multiple spaces for placing the mold cavity layers (1, 2), so that multiple test blocks can be produced at one time.

2. The cement mortar mold according to claim 1, characterized in that: The two opposite side walls of the support part (4) are respectively provided with sliding channels (5), the movable partition comprises a longitudinal partition (6), and sliding blocks (601) are respectively provided at both ends of the longitudinal partition (6), and the sliding blocks (601) extend into the sliding channel (5) to slide along the side wall of the support part (4) for changing the manufacturing size of the test block.

3. The cement mortar mold according to claim 2, characterized in that: The sliding block (601) is triangular in shape, with one angular position facing one side of the longitudinal partition (6), and the cross-sectional shape of the sliding channel (5) corresponding to the portion into which the sliding block (601) extends is adapted to the sliding block (601).

4. The cement mortar mold according to claim 3, characterized in that: The longitudinal partition (6) is provided with a positioning structure (7) for fixing the longitudinal partition (6) at a set position.

5. The cement mortar mold according to claim 4, characterized in that: The positioning structure (7) is a screw, one end of which is threadedly connected to the sliding block (601), and the other end of which passes through the sliding channel (5) and is arranged outside the supporting part (4). The sliding channel (5) has an extension part (501) that penetrates the side wall of the supporting part (4) and is used for the screw to slide.

6. The cement mortar mold according to claim 1, characterized in that: The supporting portion (4) is provided with sliding channels (5) on two opposite side walls, the movable partition comprises a longitudinal partition (6), and sliding blocks (601) are respectively provided at both ends of the longitudinal partition (6). The sliding blocks (601) extend into the sliding channel (5) to slide along the side wall of the supporting portion (4) for changing the manufacturing size of the test block. The movable partition also comprises a transverse partition (8), and limiting structures (801) are provided at both ends of the transverse partition (8) for limiting the transverse partition (8) to the longitudinal partition (6) or between the longitudinal partition (6) and the side wall of the supporting portion (4).

7. The cement mortar mold according to claim 6, characterized in that: The limiting structure (801) is a U-shaped clamping spring sheet, which is used to clamp on the longitudinal partition (6) and / or the side wall of the supporting part (4).

8. The cement mortar mold according to any one of claims 1 to 7, characterized in that: The cover body (3) is hinged on the supporting part (4).

9. The cement mortar mold according to any one of claims 2 to 5, characterized in that: The opening width of the sliding channel (5) located on the inner side wall of the supporting part (4) is 2-5 mm.

10. The cement mortar mold according to any one of claims 1 to 7, characterized in that: The mold cavity layers (1, 2) are made of silicone material.

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