Dirt-isolating and slag-avoiding pouring system main pouring gate for pipe fitting vertical modeling mold

Abstract

The utility model discloses a main pouring gate of a dirt-isolating and slag-avoiding pouring system for a pipe fitting vertical modeling mould, which comprises a pouring cup, the pouring cup is formed by combining a pouring cup main body at the lower part and a partition plate at the upper part, two sides of the bottom of the pouring cup are respectively connected with a transverse pouring gate, and any position below the transverse pouring gate is connected with a vertical pouring gate. The bottom, close to the pouring cup, of the cross gate is provided with a divergent part, the caliber of the divergent part in the direction away from the pouring cup is gradually increased, the top of the cross gate is provided with a sawtooth structure, the sawtooth structure is in a reverse tooth or following tooth mode, and the thickness of the upper portion of the cross gate is larger than that of the bottom of the cross gate; a conversion part and a fusiform part are sequentially arranged at the top of the vertical pouring gate from top to bottom, the conversion part is thinner than the transverse pouring gate, and the fusiform part is of a structure with a large middle and two small ends. The overall height of the pouring cup is kept unchanged by replacing the partition plate on the top of the pouring cup, the problem that a large number of sand holes appear on the surface of a casting due to the fact that the pouring cup is abraded and scattered sand enters a cavity is solved, and the pouring cup has the effective dirt isolating and slag avoiding functions in the pouring molten iron mold filling process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of dirty separation, avoid slag pouring system main runner for pipe vertical molding mold, belong to casting technical field. BACKGROUND

[0002] The pouring cup used in the traditional pipe casting vertical molding line mold is of integral structure, and during the use of the mold in the automatic vertical molding line, the top of the pouring cup gradually wears, which can make the height from the bottom of the mold to the pouring cup lower than the height from the bottom of the sand mold to the sprue, and during the molding process, a layer of sand can be left between the top layer of the sand mold and the sand mold pouring cup, and the sand can fall into the cavity, resulting in a large number of sand hole defects on the surface of the pipe casting.

[0003] During casting, some impurities can be inevitably mixed into molten metal during smelting or dirty slag can be generated due to oxidation of the molten metal during pouring, and generally, a deslagging agent is added to make the dirty slag float on the surface of the molten metal after smelting and before pouring, and then the floating slag is removed by scraping, but the scraping is not complete and the subsequent oxidation of the molten metal can generate dirty slag again, and if no measures are taken, the dirty slag can enter the cavity of the sand mold with the poured molten metal and remain on the surface or inside of the casting, resulting in a decrease in the quality of the casting. Therefore, a deslagging device is usually provided on the runner to improve the quality of the casting and control the generation of casting holes and slag holes, but the existing deslagging device has relatively single function and very limited effect, and does not have effective dirty separation and slag avoidance functions.

[0004] As can be seen from the above, the prior art has obvious inconvenience and defects in actual use, and therefore needs to be improved. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a kind of dirty separation, avoid slag pouring system main runner for pipe vertical molding mold according to the deficiencies in the background art, can keep the overall height of pouring cup unchanged, avoid the problem that a layer of sand can be left between the top layer of sand and sand mold pouring cup during the molding process, and sand falling into the cavity causes a large number of sand hole defects on the surface of the casting, and has effective dirty separation and slag avoidance functions for pouring molten metal.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A kind of dirty separation, avoid slag pouring system main runner for pipe vertical molding mold, including pouring cup, pouring cup is combined by the bottom pouring cup main body and the upper baffle, the bottom of pouring cup is connected with horizontal runner on both sides, and horizontal runner is connected with vertical runner at any position below; The bottom of pouring cup is provided with gradually expanding part, and the top of horizontal runner is provided with sawtooth structure, and the thickness of the upper part of horizontal runner is greater than that of the bottom; The top of vertical runner is sequentially provided with transformation part and shuttle-shaped part from top to bottom.

[0008] Further, the upper diameter of the pouring cup body is larger than the lower diameter.

[0009] Further, the partition plate is a semicircular structure, and the diameter of the partition plate is equal to the upper diameter of the pouring cup body.

[0010] Further, the partition plate is fixedly connected with the pouring cup body through the plurality of counterbores.

[0011] Further, the gradually expanding part gradually increases in diameter away from the pouring cup.

[0012] Further, the sawtooth structure adopts a reverse tooth or a straight tooth pattern.

[0013] Further, the thickness of the transformation part is smaller than the thickness of the cross runner.

[0014] Further, the shuttle-shaped part is a structure with a large middle and small ends.

[0015] Compared with the prior art, the pouring cup has the following advantages after the above technical scheme is adopted.

[0016] The pouring cup in the utility model is composed of the lower pouring cup body and the upper partition plate, and when the partition plate is gradually worn to a certain extent, the partition plate can be replaced to keep the overall height of the pouring cup unchanged, so that the problem that a layer of sand is left between the top layer of the sand cavity and the pouring cup mouth of the sand mold during the molding process, and the scattered sand enters the cavity to cause a large number of sand eye defects on the surface of the casting is avoided.

[0017] The upper diameter of the pouring cup body is larger than the lower diameter, so that the dirty slag is easily suspended on the surface of the pouring cup body, and the dirty slag in the poured molten iron is preliminarily separated and avoided; the diameter of the cross runner gradually increases from the bottom of the pouring cup to the diameter of the cross runner, so that the dirty slag in the poured molten iron is secondarily separated and avoided; the sawtooth structure on the upper part of the cross runner and the overall structure of the cross runner with a thick upper part and a thin lower part can well isolate the dirty slag in the poured molten iron to the top of the cross runner, so that the dirty slag in the poured molten iron is thirdly separated and avoided; when the molten iron flows into the transformation part of the vertical runner from the cross runner, the thickness of the transformation part is smaller than that of the cross runner, so that the dirty slag is fourthly separated; when the molten iron flows to the bottom end of the shuttle-shaped part of the vertical runner, the dirty slag in the poured molten iron is fifthly separated and avoided.

[0018] The utility model will be described in detail below in combination with the drawings and embodiments. DRAWINGS

[0019] Figure 1 is a structure perspective view of embodiment 1;

[0020] Figure 2 is a structure front view of embodiment 1;

[0021] Figure 3is a structural side view of example 1;

[0022] Figure 4 is a structural top view of example 1;

[0023] Figure 5 is a schematic view of the connection of the pouring cup and the partition plate;

[0024] Figure 6 is a structural front view of example 2.

[0025] In the figure, 1-pouring cup, 2-partition plate, 3-counterbore bolt, 4-cross runner, 5-tapered section, 6-sawtooth structure, 7-vertical runner, 8-transforming section, 9-shuttle-shaped section. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation mode of the utility model will be described with reference to the drawings.

[0027] Example 1

[0028] As Figures 1-5 The utility model provides a kind of dirty separation, avoid slag pouring system main runner for pipe vertical modeling mould, including pouring cup, and pouring cup is combined by lower pouring cup main body 1 and upper partition plate 2.Two sides of the bottom of pouring cup are connected with cross runner 4 respectively, and cross runner 4 is connected with vertical runner 7 at any position below.Certain position and quantity of vertical runner 7 are determined according to the distribution of mould cavity, and the length of cross runner 4 varies according to the position of vertical runner 7.

[0029] The upper diameter of the pouring cup main body 1 is greater than the bottom diameter, and the dirt and slag are easily suspended on the surface of the pouring cup main body 1, which plays a role of preliminary slag separation and dirt avoidance for pouring molten iron.

[0030] The partition plate 2 is a semicircular structure, and the diameter of the partition plate 2 is equal to the upper diameter of the pouring cup main body 1.The partition plate 2 is fixedly connected with the pouring cup main body 1 by a plurality of counterbore bolts 3.When the partition plate 2 is worn to a certain extent during molding, the counterbore bolts 3 can be disassembled, and a new partition plate 2 can be replaced.

[0031] The thickness of the partition plate 2 is 6mm, and the material of the partition plate 2 includes iron plate, aluminum plate and plastic plate, which can be the same as or different from the material of the main runner.

[0032] The cross runner 4 is provided with a tapered section 5 on the end portion close to the pouring cup, and the diameter of the tapered section 5 gradually increases away from the pouring cup.The diameter of the cross runner 4 gradually transitions from small to large at the shunt point of the molten iron from the bottom of the pouring cup, which plays a role of second step of slag separation and dirt avoidance for pouring molten iron.

[0033] The top of the horizontal sprue 4 is provided with a serrated structure 6, which adopts a reverse tooth pattern. The upper part of the horizontal sprue 4 is thicker than its bottom. When molten iron flows from the pouring cup into the horizontal sprue 4, the slag in the molten iron floats on the upper part of the horizontal sprue 4. The serrated structure 6 on the upper part of the horizontal sprue 4 and the overall structure of the horizontal sprue 4, which is thicker at the top and thinner at the bottom, can effectively isolate the slag in the molten iron to the top of the horizontal sprue 4, playing a third-step role in slag separation and dirt avoidance, and ensuring the cleanliness of the molten iron flowing into the vertical sprue 7.

[0034] The top of the vertical gating channel 7 is provided with a transformation section 8 and a shuttle-shaped section 9 from top to bottom.

[0035] The thickness of the transformation section 8 is less than the thickness of the horizontal sprue 4. When molten iron flows from the horizontal sprue 4 into the transformation section 8 of the vertical sprue 7, the transformation section 8, being thinner than the horizontal sprue 4, serves as the fourth step in slag separation.

[0036] The shuttle-shaped part 9 has a structure that is large in the middle and small at both ends. It serves to buffer the flow of molten iron and fill and replenish each cavity to ensure a continuous flow of molten iron. At the same time, the bottom of the shuttle-shaped part 9 can serve to separate slag and prevent dirt from the molten iron in the fifth step.

[0037] Example 2

[0038] like Figure 6 As shown in the figure, this utility model provides a main runner for a vertical molding mold for pipe fittings, which is designed to prevent dirt and slag from entering the casting system. The difference between Embodiment 2 and Embodiment 1 is that:

[0039] The sawtooth structure 6 in Example 1 adopts a reverse tooth pattern, while the sawtooth structure 6 in Example 2 adopts a forward tooth pattern.

[0040] The specific working principle of this utility model is as follows:

[0041] The pouring cup in this invention is composed of a lower pouring cup body and an upper partition. When the partition wears down to a certain extent, it can be replaced to keep the overall height of the pouring cup unchanged. This avoids the problem that a layer of molding sand will remain between the top layer of the molding sand cavity and the pouring cup opening during the molding process, and that scattered sand will enter the mold cavity, causing a large number of sand hole defects on the surface of the casting.

[0042] The dirty slag is easily suspended to the surface of the pouring cup body, and the dirty slag is preliminarily separated from the pouring liquid iron, and the dirty slag is avoided; the dirty slag in the pouring liquid iron is gradually separated from the pouring liquid iron, and the dirty slag is avoided; the dirty slag in the pouring liquid iron is separated to the top of the cross runner, and the dirty slag is avoided; the dirty slag in the pouring liquid iron is separated when the liquid iron flows into the vertical runner from the cross runner, and the dirty slag is avoided; the dirty slag in the pouring liquid iron is separated when the liquid iron flows to the bottom end of the vertical runner, and the dirty slag is avoided.

[0043] The above is an example of the best embodiment of the utility model, wherein the parts not described in detail are common knowledge of those skilled in the art. The protection scope of the utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A main runner for a vertical molding mold for pipe fittings, characterized by: Includes a pouring cup, which is composed of a lower pouring cup body (1) and an upper partition (2). The bottom sides of the pouring cup are connected to horizontal pouring channels (4), and vertical pouring channels (7) are connected at any position below the horizontal pouring channels (4). The horizontal gating channel (4) has a gradually expanding section (5) near the bottom of the pouring cup, and a serrated structure (6) is provided at the top of the horizontal gating channel (4). The upper thickness of the horizontal gating channel (4) is greater than its bottom thickness. The top of the vertical gating channel (7) is provided with a transformation section (8) and a shuttle-shaped section (9) from top to bottom.

2. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 1, characterized in that: The upper diameter of the pouring cup body (1) is larger than its bottom diameter.

3. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 1, characterized in that: The partition (2) is a semi-circular structure, and the diameter of the partition (2) is equal to the upper diameter of the pouring cup body (1).

4. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 3, characterized in that: The partition (2) is fixedly connected to the pouring cup body (1) by multiple countersunk bolts (3).

5. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 1, characterized in that: The diameter of the expanding section (5) gradually increases in the direction away from the pouring cup.

6. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 1, characterized in that: The sawtooth structure (6) adopts either a reverse tooth or a forward tooth pattern.

7. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 1, characterized in that: The thickness of the transformation section (8) is less than the thickness of the horizontal runner (4).

8. The main runner of the vertical molding mold for pipe fittings with anti-fouling and slag-avoiding gating system as described in claim 1, characterized in that: The spindle-shaped part (9) has a structure that is large in the middle and small at both ends.

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