A composite mold for synchronously forming concrete cube test blocks and hollow blocks

Abstract

The present invention proposes a composite mold for synchronously forming a concrete cube test block and a hollow building block, which belongs to the technical field of building block molds; the synchronous forming mold includes an upper mold and a lower mold; the lower mold includes a trough body, and a solid partition is arranged in the trough body; the partition is a square annular structure; the partition divides the trough body into an outer cavity and an inner cavity, the cross-section of the inner cavity is the same as the cross-section of the solid building block, and the cross-section of the outer cavity is the same as the cross-section of the hollow building block; the upper mold is provided with a structure that can be molded together with the lower mold, and after the upper mold and the lower mold are molded together, a concrete cube test block is formed in the inner cavity, and a hollow building block is formed in the outer cavity; the present invention can synchronously form matching hollow building blocks and cubic test blocks under exactly the same vibration and pressure, greatly reducing the error between the hollow building blocks and the cubic test blocks, and establishing the strength relationship between the two more accurately and reliably; it can be applied to the strength evaluation of hollow building blocks prepared at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of building block moulds, in particular to a composite mould for synchronously forming a concrete cubic test block and a hollow building block. Background Art

[0002] Hollow concrete blocks are made of cement as the primary binder and sand, gravel, or construction waste as coarse and fine aggregates. The blocks are produced through a process of metered batching, water mixing, vibration and pressure molding, and curing. Hollow concrete blocks are suitable for various buildings in areas with a seismic design intensity of 8 or less, including high-rise and long-span structures. They can also be used in municipal facilities such as fences, retaining walls, bridges, and flower beds. Importantly, with the national promotion of prefabricated and green buildings, the application of hollow concrete blocks in prefabricated concrete block masonry is expected to become even more widespread. In recent years, a growing number of researchers have conducted research on hollow concrete blocks, focusing on their strength and durability. The compressive strength of concrete cube specimens is often considered one of the primary criteria for assessing concrete strength grades. To more accurately assess the strength grade of hollow concrete blocks, researchers generally analyze the relationship between the strength and durability (such as frost resistance) of hollow concrete blocks and corresponding cube specimens.

[0003] The existing method for manufacturing hollow blocks usually adopts a vibration and pressure molding process, and the corresponding cubic test blocks also use the same molding method. At present, the molding of concrete hollow blocks and cubic test blocks usually requires independent molding process operations. This not only requires the preparation of two different sets of molds, but also inevitably has some deviations in the manufacturing process. In particular, the large-scale application of construction and industrial solid waste in concrete hollow blocks. For concrete cubic test blocks and hollow blocks prepared with solid waste materials, the influence of factors such as material heterogeneity will further increase the evaluation error of the relationship between the strength and durability of the two. In addition, this method will increase the process and energy consumption, low efficiency, and cause waste of time and cost. Summary of the Invention

[0004] The present invention overcomes the shortcomings of the prior art and provides a composite mould for synchronously forming a concrete cubic test block and a hollow building block.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A composite mold for synchronously forming a concrete cube test block and a hollow building block, comprising an upper mold and a lower mold; the lower mold is located on a support plate of a forming machine, the upper mold is connected to the bottom of the forming machine's pressure head, and the lower mold comprises a trough body, and a solid partition is arranged on the trough body; the partition is a square annular structure; the height of the partition is the same as the height of the trough body; the bottom of the partition is connected to the bottom of the trough body; the partition divides the trough body into an outer cavity and an inner cavity, the cross-section of the inner cavity is the same as the cross-section of the solid building block, and the cross-section of the outer cavity is the same as the cross-section of the hollow building block; a support platform is provided at the bottom of the inner cavity; the upper mold is provided with a structure that can be combined with the lower mold, and after the upper mold and the lower mold are combined, a concrete cube test block is formed in the inner cavity, and a hollow building block is formed in the outer cavity; the height from the upper surface of the support platform to the bottom after the upper mold is pressed down is equal to the height of the concrete cube test block.

[0007] Preferably, the upper surface of the trough body is a horizontal connecting platform, the horizontal connecting platform is provided with a positioning hole, and the lower mold cylinder of the molding machine is connected to the horizontal connecting platform through a hinge structure.

[0008] Preferably, the lower mold is provided with a plurality of the trough bodies for batch preparation of multiple groups of concrete cube test blocks and hollow blocks.

[0009] More preferably, two adjacent troughs are connected by connecting ribs.

[0010] Preferably, the length and width of the cross section of the inner cavity are both 100 mm.

[0011] More preferably, the height from the upper surface of the support platform to the inner cavity portion after the upper mold is pressed down is 100 mm.

[0012] Preferably, the height of the outer cavity is 260 mm, and the height of the outer cavity part after mold closing is 190 mm.

[0013] The beneficial effects of the present invention compared to the prior art are:

[0014] The present invention proposes a new composite mold for synchronously forming concrete cube test blocks and hollow blocks. This composite mold can simultaneously produce matching concrete hollow blocks and cube test blocks under the same vibration parameters. By measuring the compressive strength of the cube test blocks, it can be applied to the strength assessment of the hollow blocks prepared at the same time. The error between the hollow blocks and the cube test blocks can be greatly reduced, and the strength relationship between the two can be established more accurately and reliably. At the same time, the use of this mold can reduce the number of steps by half, saving time and energy, thereby improving production efficiency. This new mold can not only play an important role in the laboratory, but also provide strong technical support for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A top view of the synchronous molding composite mold of the present invention;

[0016] Figure 2 for Figure 1 AA section view;

[0017] Figure 3 This is a schematic diagram of the synchronous forming mold practical forming machine of the present invention in the process of manufacturing cubic test blocks and hollow building blocks. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0019] See also Figure 1-3 This embodiment proposes a composite mold for synchronously forming a concrete cube test block and a hollow building block, including an upper mold 10 and a lower mold 11; the lower mold 11 is located on a support plate 1 of the molding machine, and the upper mold 10 is connected to the bottom of the pressure head of the molding machine; the molding machine is an existing structure, including a frame 4, a guide column 3 is provided between the upper and lower walls of the frame 4, and the inner walls on both sides of the frame 4 are connected to the lower mold cylinder 6; the guide column 3 is slidably connected to the upper sliding sleeve 7 and the lower sliding sleeve 5; the lower sliding sleeve 5 is connected to the lower mold 11, and the upper sliding sleeve 7 is fixedly connected to the upper mold 10, the frame 4 is connected to the upper mold cylinder 8, the upper mold cylinder 8 is connected to the vibrator 9, and the vibrator 9 is connected to the upper mold 10.

[0020] The lower mold 11 includes two troughs 15 for simultaneously preparing two groups of concrete cube test blocks 14 and hollow blocks 12. The upper surface of the troughs 15 is a horizontal connecting platform 20 with positioning holes 21. The lower mold cylinder 6 of the molding machine is connected to the horizontal connecting platform 20 via a hinge structure.

[0021] A hollow partition 16 is provided in the trough body 15; the partition 16 is a square ring structure; the height of the partition 16 is the same as the height of the trough body 15; the bottom of the partition 16 is connected to the bottom of the trough body 15; the partition 16 divides the trough body 15 into an outer cavity 17 and an inner cavity 18, the cross-section of the inner cavity 18 is the same as the cross-section of the concrete cube test block 14, and the cross-section of the outer cavity 17 is the same as the cross-section of the hollow building block 12; a support platform 19 is provided at the bottom of the inner cavity 18; the upper mold 10 is provided with a structure that can be matched with the lower mold 11, and after the upper mold 10 and the lower mold 11 are matched, the concrete cube test block 14 is formed in the inner cavity 18, and the hollow building block 12 is formed in the outer cavity 17; the height of the outer cavity 17 is 260mm. The height from the upper surface of support platform 19 to the bottom of inner cavity 18 after upper mold 10 is pressed downward is the same as the height of concrete cube test piece 14, that is, 100 mm. The cross-section of inner cavity 18 has a length and width of 100 mm, so a concrete cube test piece 14 with a side length of 100 mm can be directly pressed.

[0022] In this embodiment, the lower mold 11 is provided with four troughs 15 for batch-producing four groups of concrete cube test blocks 14 and hollow blocks 12. Two adjacent troughs 15 are connected by connecting ribs 22.

[0023] The method of using the synchronous forming mold described in this embodiment is as follows:

[0024] The lower mold 11 is fixed to the support plate 1, and the upper mold 10 is fixed to the bottom of the upper sliding sleeve 7. The upper mold cylinder 8 moves the upper mold 10 downward and presses the concrete in the inner and outer cavities 17 and the inner cavity 18 of the lower mold 11, thereby simultaneously forming a hollow block 12 and a concrete cube test block 14. Because the lower mold 11 has both an outer cavity 17 for forming hollow blocks and an inner cavity 18 for forming concrete cube test blocks 14, a set of hollow blocks 12 and concrete cube test blocks 14 can be formed under the same applied force and the same vibration parameters. This can greatly reduce the error between the hollow blocks and the cube test blocks, and more accurately and reliably establish the strength relationship between the two. At the same time, using this mold can reduce half of the process steps, saving time and energy, thereby improving production efficiency.

[0025] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be considered that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the present invention, which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims

1. A composite mold for synchronously molding a concrete cube test block and a hollow building block, comprising an upper mold (10) and a lower mold (11); the lower mold (11) is located on a support plate (1) of a molding machine, and the upper mold (10) is connected below the pressure head of the molding machine, characterized in that: The lower mold (11) includes a trough body (15), wherein a hollow partition (16) is provided in the trough body (15); the partition (16) is a square ring structure; the height of the partition (16) is the same as the height of the trough body (15); the bottom of the partition (16) is flush with the bottom of the trough body (15); the partition (16) divides the trough body (15) into an outer cavity (17) and an inner cavity (18); the cross section of the inner cavity (18) is the same as the cross section of the concrete cube test block (14), and the cross section of the outer cavity (17) is the same as the cross section of the concrete cube test block (14). The cross section is the same as the cross section of the hollow building block (12); a support platform (19) is provided at the bottom of the inner cavity (18); the upper mold (10) is provided with a structure that can be molded with the lower mold (11), and after the upper mold (10) and the lower mold (11) are molded together, a concrete cube test block (14) is formed in the inner cavity (18) and a hollow building block (12) is formed in the outer cavity (17); the height from the upper surface of the support platform (19) to the bottom of the upper mold (10) after being pressed down is equal to the height of the concrete cube test block (14).

2. A composite mold for synchronously forming a concrete cube test block and a hollow building block according to claim 1, characterized in that: The upper surface of the trough body (15) is a horizontal connecting platform (20), and the horizontal connecting platform (20) is provided with a positioning hole (21). The lower mold cylinder (6) of the molding machine is connected to the horizontal connecting platform (20) through a hinge structure, and the upper and lower molds cooperate with the upper and lower sliding sleeves installed on the positioning hole (21) through the guide column (3) to ensure the mold clamping accuracy.

3. The composite mold for synchronously forming a concrete cube test block and a hollow building block according to claim 1, characterized in that: The lower mold (11) is provided with a plurality of the trough bodies (15) for batch preparation of multiple groups of concrete cube test blocks (14) and hollow building blocks (12).

4. A composite mold for synchronously forming a concrete cube test block and a hollow building block according to claim 3, characterized in that: Two adjacent trough bodies (15) are connected via connecting ribs (22).

5. The composite mold for synchronously forming a concrete cube test block and a hollow building block according to claim 1, characterized in that: The length and width of the cross section of the inner cavity (18) are both 100 mm.

6. A composite mold for synchronously forming a concrete cube test block and a hollow building block according to claim 5, characterized in that: The height from the upper surface of the support platform to the inner cavity (18) after the upper mold (10) is pressed down is 100 mm.

7. The composite mold for synchronously forming a concrete cube test block and a hollow building block according to claim 1, characterized in that: The height of the outer cavity (17) is 260 mm, and the height of the outer cavity (17) after mold closing is 190 mm.

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