Reinforced baked sand mold

Abstract

The utility model belongs to the technical field of calcined sand model, concretely is a kind of reinforced calcined sand model, including first half mould, the outer wall of first half mould is attached with second half mould, the top of first half mould is provided with injection port, the top of injection port is fixedly connected with hopper, the attached surface of first half mould is fixedly connected with positioning strip, the connecting part of second half mould and positioning strip is provided with positioning groove, the inside of first half mould and second half mould is provided with reinforcing steel bar.The utility model is provided with connecting block and reinforcing steel bar, the first connecting lug of first half mould and the second connecting lug of second half mould are attached, so that connecting block and connecting groove are embedded, then, first connecting lug and second connecting lug are fixed by fastening bolt, calcined sand model is reinforced, meanwhile, by reinforcing steel bar distributed equidistantly, avoid workpiece to crack due to thermal expansion and cold shrinkage when calcining calcined sand model.

Description

Technical Field

[0001] This utility model belongs to the technical field of calcined sand model, specifically a reinforced calcined sand model. Background Technology

[0002] The calcined sand model is a sand-based composite material model that combines high-temperature calcination with strengthening treatment. It features high strength, high temperature resistance, and good stability. The core is to form a ceramic bond between sand particles through calcination, and then enhance the structure through physical and chemical means.

[0003] When using existing reinforced calcined sand models, cracks occur in the calcined sand models due to thermal expansion and contraction during the calcination process. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforced calcined sand model to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a reinforced calcined sand model, comprising a first half-mold, a second half-mold attached to the outer wall of the first half-mold, a sluice gate provided at the top of the first half-mold, a hopper fixedly connected to the top of the sluice gate, a positioning strip fixedly connected to the mating surface of the first half-mold, a positioning groove provided at the connection between the second half-mold and the positioning strip, reinforcing steel bars provided inside both the first and second half-molds, a first connecting ear welded to one end of the first half-mold, a connecting block fixedly connected to the outer wall of the first connecting ear, a second connecting ear welded to the end of the first half-mold away from the first connecting ear, a connecting groove provided on the outer wall of the second connecting ear, and the first half-mold connected to the second half-mold by fastening bolts.

[0006] Based on the above structure, the first connecting ear of the first half mold and the second connecting ear of the second half mold fit together, so that the connecting block and the connecting groove are fitted together. Then, the first connecting ear and the second connecting ear are fixed by fastening bolts to strengthen the calcined sand model. At the same time, the equidistant reinforcing steel bars prevent the calcined sand model from cracking due to thermal expansion and contraction during calcination.

[0007] Preferably, the inner walls of both the first and second half molds are sprayed with a dispersant. In this embodiment, the dispersant is uniformly sprayed on the inner walls of the first and second half molds to facilitate demolding.

[0008] Preferably, the first half-mold and the second half-mold have the same structure. The first half-mold and the second half-mold are semi-cylindrical and are centrally distributed about the central axis of the injection port. In this embodiment, this facilitates a tight fit between the first half-mold and the second half-mold.

[0009] Preferably, the first half-mold forms a positioning structure with the second half-mold through positioning strips and positioning grooves. In this embodiment, the first half-mold and the second half-mold are fitted together by positioning strips and positioning grooves to avoid misalignment when the first half-mold and the second half-mold are joined, which would cause misalignment of the mold-joining part of the workpiece.

[0010] Preferably, the reinforcing bars are distributed at equal intervals along the inner wall of the first half-mold. In this embodiment, the equally distributed reinforcing bars prevent the workpiece from cracking due to thermal expansion and contraction during firing.

[0011] Preferably, the diameter of the first connecting ear and the second connecting ear coincides with that of the first half mold. In this embodiment, this facilitates a tight fit between the first half mold and the second half mold.

[0012] Preferably, the first connecting ear forms an engaging structure with the second connecting ear through the connecting block and the connecting groove. In this embodiment, the first connecting ear of the first half mold and the second connecting ear of the second half mold are fitted together, so that the connecting block and the connecting groove are engaged. Then, the first connecting ear and the second connecting ear are fixed by fastening bolts to reinforce the calcined sand model.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses positioning strips and positioning grooves to uniformly spray a dispersant on the inner walls of the first and second half molds, which facilitates demolding. Then, the positioning strips and positioning grooves are used to fit the first and second half molds together, which prevents misalignment when the first and second half molds are joined, thus avoiding misalignment of the molded part of the workpiece.

[0014] 2. This utility model sets up connecting blocks and reinforcing bars, so that the first connecting ear of the first half mold and the second connecting ear of the second half mold fit together, so that the connecting block and the connecting groove are fitted together. Then, the first connecting ear and the second connecting ear are fixed by fastening bolts to strengthen the calcining sand model. At the same time, the equidistantly distributed reinforcing bars prevent the calcining sand model from cracking due to thermal expansion and contraction during calcination. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the connection between the first half-mold and the second half-mold of this utility model; Figure 3 This is a schematic diagram of the structure of the first half-mold of this utility model; Figure 4 This is a schematic diagram of the structure of the second half-mold of this utility model.

[0016] In the diagram: 1. First half mold; 2. Second half mold; 3. Injection port; 4. Hopper; 5. Positioning strip; 6. Positioning groove; 7. Reinforcing steel bar; 8. First connecting ear; 9. Connecting block; 10. Second connecting ear; 11. Connecting groove; 12. Fastening bolt. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 - Figure 4 The present invention will be described in further detail below.

[0018] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0019] This utility model discloses a reinforced calcined sand model, including a first half mold 1, a second half mold 2 attached to the outer wall of the first half mold 1, a sluice gate 3 at the top of the first half mold 1, a hopper 4 fixedly connected to the top of the sluice gate 3, a positioning strip 5 fixedly connected to the mating surface of the first half mold 1, a positioning groove 6 formed at the connection between the second half mold 2 and the positioning strip 5, reinforcing steel bars 7 provided inside both the first half mold 1 and the second half mold 2, a first connecting ear 8 welded to one end of the first half mold 1, a connecting block 9 fixedly connected to the outer wall of the first connecting ear 8, a second connecting ear 10 welded to the end of the first half mold 1 away from the first connecting ear 8, a connecting groove 11 formed on the outer wall of the second connecting ear 10, and the first half mold 1 connected to the second half mold 2 by fastening bolts 12.

[0020] Based on the above structure, the first connecting ear 8 of the first half mold 1 fits into the second connecting ear 10 of the second half mold 2, so that the connecting block 9 fits into the connecting groove 11. Then, the first connecting ear 8 and the second connecting ear 10 are fixed by the fastening bolt 12 to strengthen the calcined sand model. At the same time, the equidistant reinforcing steel bars 7 prevent the calcined sand model from cracking due to thermal expansion and contraction during calcination.

[0021] In one embodiment, the inner walls of both the first half-mold 1 and the second half-mold 2 are sprayed with a disintegrating agent.

[0022] In this embodiment, a dispersant is uniformly sprayed onto the inner walls of the first half-mold 1 and the second half-mold 2 to facilitate demolding.

[0023] In one embodiment, the first half mold 1 and the second half mold 2 have the same structure, the first half mold 1 and the second half mold 2 are semi-cylindrical, and the first half mold 1 and the second half mold 2 are centrally distributed about the central axis of the injection port 3.

[0024] In this embodiment, it is convenient for the first half mold 1 and the second half mold 2 to fit tightly together.

[0025] In one embodiment, the first half-mold 1 forms a positioning structure with the second half-mold 2 through the positioning strip 5 and the positioning groove 6.

[0026] In this embodiment, the first half mold 1 and the second half mold 2 are fitted together by the positioning strip 5 and the positioning groove 6 to avoid misalignment when the first half mold 1 and the second half mold 2 are joined together, which would cause misalignment of the mold-joining part of the workpiece.

[0027] In one embodiment, the reinforcing bars 7 are distributed at equal intervals along the inner wall of the first half-mold 1.

[0028] In this embodiment, the equally spaced reinforcing steel bars 7 are used to prevent the workpiece from cracking due to thermal expansion and contraction during firing.

[0029] In one embodiment, the first connecting ear 8 and the second connecting ear 10 coincide with the diameter of the first half mold 1.

[0030] In this embodiment, it is beneficial for the first half mold 1 and the second half mold 2 to fit together tightly.

[0031] In one embodiment, the first connecting ear 8 forms an engaging structure with the second connecting ear 10 through the connecting block 9 and the connecting groove 11.

[0032] In this embodiment, the first connecting ear 8 of the first half mold 1 and the second connecting ear 10 of the second half mold 2 are fitted together, so that the connecting block 9 is fitted into the connecting groove 11. Then, the first connecting ear 8 and the second connecting ear 10 are fixed by the fastening bolt 12 to reinforce the calcined sand model.

[0033] When using this invention, firstly, a dispersant is evenly sprayed onto the inner walls of the first half mold 1 and the second half mold 2 to facilitate demolding; then, the first half mold 1 and the second half mold 2 are fitted together by the positioning strip 5 and the positioning groove 6 to avoid misalignment when the first half mold 1 and the second half mold 2 are closed, which would cause misalignment of the molded part of the workpiece.

[0034] Meanwhile, the first connecting ear 8 of the first half mold 1 fits into the second connecting ear 10 of the second half mold 2, so that the connecting block 9 fits into the connecting groove 11. Then, the first connecting ear 8 and the second connecting ear 10 are fixed by the fastening bolt 12 to reinforce the calcined sand model. At the same time, the equidistant reinforcing steel bars 7 prevent the calcined sand model from cracking due to thermal expansion and contraction during calcination.

[0035] Finally, calcined sand is injected into the feeding port 3 through the hopper 4 and compacted, and the calcined sand model is heated by the calcining equipment.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reinforced calcined sand model, characterized in that, The first half mold (1) is attached to the outer wall of the first half mold (1) and the second half mold (2) is attached to the outer wall of the first half mold (1). The top of the first half mold (1) is provided with a sluice gate (3) and the top of the sluice gate (3) is fixedly connected to a hopper (4). The mating surface of the first half mold (1) is fixedly connected to a positioning strip (5). The connection part between the second half mold (2) and the positioning strip (5) is provided with a positioning groove (6). The interior of the first half mold (1) and the second half mold (2) is provided with reinforcing steel bars (7). One end of the first half mold (1) is welded with a first connecting ear (8). The outer wall of the first connecting ear (8) is fixedly connected with a connecting block (9). The end of the first half mold (1) away from the first connecting ear (8) is welded with a second connecting ear (10). The outer wall of the second connecting ear (10) is provided with a connecting groove (11). The first half mold (1) is connected to the second half mold (2) by fastening bolts (12).

2. The reinforced calcined sand model according to claim 1, characterized in that: The inner walls of the first half mold (1) and the second half mold (2) are both sprayed with a disintegrating agent.

3. The reinforced calcined sand model according to claim 1, characterized in that: The first half mold (1) and the second half mold (2) have the same structure. The first half mold (1) and the second half mold (2) are semi-cylindrical. The first half mold (1) and the second half mold (2) are centrally distributed about the central axis of the injection port (3).

4. The reinforced calcined sand model according to claim 1, characterized in that: The first half-mold (1) forms a positioning structure with the second half-mold (2) through the positioning strip (5) and the positioning groove (6).

5. The reinforced calcined sand model according to claim 1, characterized in that: The reinforcing bars (7) are distributed at equal intervals along the inner wall of the first half-mold (1).

6. The reinforced calcined sand model according to claim 1, characterized in that: The diameters of the first connecting ear (8) and the second connecting ear (10) coincide with those of the first half mold (1).

7. The reinforced calcined sand model according to claim 1, characterized in that: The first connecting ear (8) forms an engaging structure with the second connecting ear (10) through the connecting block (9) and the connecting groove (11).

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