Batch casting tool for castings

Abstract

The utility model discloses a casting batch pouring tool which comprises a sand box, a screen plate is arranged in the sand box, and positioning holes distributed in a matrix mode are formed in the screen plate. The mold is inserted into the positioning hole, the upper end of the mold is open, the upper end opening of the mold is higher than molding sand in the sand box, and a vacuum connector is arranged on the sand box; according to the utility model, the net plate with the positioning holes is arranged in the net cage, and the positioning holes are used for positioning and placing a mold, so that the mold is prevented from deviating in the pouring process, the pouring precision of a casting is ensured, and vacuum pouring is adopted, so that the pouring quality of a casting product is improved, and the mechanical property of the casting product is further improved; meanwhile, the positioning holes are distributed in a matrix mode, molds can be placed in batches, the purpose of batch pouring can be achieved during pouring, residual molten steel is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a batch pouring tool for castings. Background Art

[0002] With the continuous development of my country's industry, the demand for castings has gradually increased. The demand for castings is increasing as the casting structure forms are diverse. Castings are widely used in fluid valve castings, aviation, automobiles, machinery and other fields. With the wide application of castings, the internal quality requirements of castings are getting higher and higher, and the requirements for the mechanical properties of castings are also increasing. For small-sized castings, the pouring method is to put the mold into the sand box and fix the mold after vibration. However, there is no internal support structure inside the current sand box structure, and the mold is only squeezed and fixed by the molding sand. During the pouring process, the mold is prone to offset, which affects the pouring quality. In addition, the molten steel melted by the ordinary medium frequency furnace cannot meet the customer's demand for the mechanical properties of castings, because the casting cost of this requirement is relatively high and there is a certain lack of quantity. The castings of this requirement often need to use the molten steel melted by AOD to meet the requirements, and the molten steel melted by AOD is very much at one time. If a single pouring is performed, it will cause molten steel to remain, increasing production costs. Therefore, the present application proposes a casting batch pouring tool to solve the above problems. Utility Model Content

[0003] The main purpose of the utility model is to provide a batch casting tool for castings, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a casting batch casting tool, including a sand box, a mesh plate is arranged in the sand box, and the mesh plate has positioning holes distributed in a matrix; a mold, the mold is inserted into the positioning holes, the upper end of the mold is open and the upper end of the mold is higher than the molding sand in the sand box, and a vacuum joint is arranged on the sand box.

[0005] Preferably, the sand box comprises an outer box body and an inner mesh box, a vacuum cavity is formed between the inner mesh box and the outer box body, and the vacuum joint is connected to the vacuum cavity.

[0006] Preferably, the outer box and the inner net box are both structures with openings facing upward, and the outer side wall of the inner net box is fixedly connected to the inner side wall of the outer box via a ring plate.

[0007] Preferably, the opening side wall of the mold is provided with a notch groove, and the notch grooves between two adjacent molds are connected by a slot mold.

[0008] Preferably, the outer dimensions of the mold are consistent with the dimensions of the positioning hole.

[0009] Preferably, a positioning protrusion is provided on the outer side of the mold, and the positioning protrusion abuts against the mesh plate.

[0010] Preferably, the mold is provided with air holes.

[0011] Preferably, the air holes are arranged at the bottom of the mold.

[0012] Compared with the traditional technology, the beneficial effects produced by the utility model are as follows: the utility model arranges a mesh plate with positioning holes in the mesh box, and uses the positioning holes to position and place the mold, thereby avoiding the mold from being offset during the pouring process, ensuring the pouring accuracy of the casting, and adopts vacuum pouring to improve the pouring quality of the casting product, thereby improving the mechanical properties of the casting product. At the same time, the positioning holes are distributed in a matrix, and the molds can be placed in batches. During pouring, the purpose of batch pouring can be achieved, the excess molten steel can be reduced, and the production cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the connection between the mold and the screen in the utility model;

[0016] Figure 4 It is a three-dimensional schematic diagram of the mold structure in the utility model;

[0017] Figure 5 It is a schematic cross-sectional view of the mold structure in the utility model;

[0018] Figure 6 This is a schematic diagram of the existing steel ingot structure.

[0019] In the figure: 1. sand box; 101. outer box body; 102. inner mesh box; 103. vacuum chamber; 104. ring plate; 2. mold; 201. notch groove; 202. positioning protrusion; 203. air hole; 3. mesh plate; 4. positioning hole; 5. vacuum joint; 6. slot mold. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 6 As shown, a steel ingot casting structure is shown. The batch pouring tooling in the utility model is specifically described below by batch pouring the steel ingot casting.

[0022] like Figure 1-5As shown, the casting tooling includes a sand box 1 and a mold 2. A mesh plate 3 is arranged in the sand box 1, and the mesh plate 3 is detachably connected to the sand box 1. Specifically, a support block can be arranged on the inner wall of the sand box 1, and the support block provides support for the mesh plate 3. Positioning holes 4 distributed in a matrix are opened on the mesh plate 3, and the mold 2 is inserted into the positioning holes 4. The upper end of the mold 2 is open and the upper end of the mold 2 is higher than the molding sand in the sand box 1. A vacuum joint 5 is arranged on the sand box 1, and the vacuum joint 5 is connected to the vacuum equipment.

[0023] The sand box 1 includes an outer box body 101 and an inner grid box 102, a vacuum chamber 103 is formed between the inner grid box 102 and the outer box body 101, the vacuum joint 5 is connected to the vacuum chamber 103, and the outer box body 101 and the inner grid box 102 are both structures with openings facing upward, and the outer wall of the inner grid box 102 is fixedly connected to the inner wall of the outer box body 101 by a ring plate 104. The vacuum equipment draws a vacuum in the vacuum chamber 103, and uses the inner grid box 102 to make the molding sand in the inner grid box 102 in a vacuum state, thereby completing vacuum pouring.

[0024] The open side wall of the mold 2 is provided with a notch groove 201, and the number of the opening grooves is four and they are distributed in a circle. The size of the opening groove is consistent with the size of the protruding portion of the upper end of the steel ingot. The notch grooves 201 between two adjacent molds 2 are connected by a slot mold 6, thereby connecting the molds 2 in the sand box 1 together. During pouring, the flow of molten metal can be completed, and pouring of each mold 2 can be completed quickly at a single point.

[0025] In order to ensure accurate positioning and prevent the mold 2 from shaking, the outer dimensions of the mold 2 are consistent with the dimensions of the positioning hole 4. A positioning protrusion 202 is provided on the outside of the mold 2, and the positioning protrusion 202 abuts against the mesh plate 3. The positioning protrusion 202 limits the axial position of the mold 2 to prevent the mold 2 from falling downward.

[0026] In order to improve the precision of casting, an air hole 203 is opened on the mold 2. The air hole 203 can be set on the side or bottom of the mold 2. In this embodiment, the air hole 203 is set on the bottom of the mold 2, and a plurality of air holes 203 are set.

[0027] The casting method is as follows: first fill the molding sand under the mesh plate 3 of the sand box 1, then put the mesh plate 3, and put the mold 2 into the positioning hole 4 of the mesh plate 3, press the mold 2 downward so that the positioning protrusion 202 on the mold 2 abuts against the mesh plate 3, and then continue to fill the molding sand into the sand box 1 until the molding sand wraps the mold 2 and the molding sand is slightly lower than the upper end opening of the mold 2, put the sand box 1 on the micro-vibration machine for vibration, so that the molding sand is filled densely, if the molding sand falls too high, continue to vibrate after replenishing the molding sand, and finally assemble the sand box 1 and pour the molten metal. By setting the mesh plate 3 with positioning holes 4 in the mesh box, the positioning holes 4 are used to position and place the mold 2, so as to avoid the mold 2 from being offset during the pouring process, ensure the pouring accuracy of the casting, and adopt vacuum pouring to improve the pouring quality of the casting product, thereby improving the mechanical properties of the casting product, and at the same time, the positioning holes 4 are distributed in a matrix, so that the mold 2 can be placed in batches, and the purpose of batch pouring can be achieved during pouring, reducing the excess molten steel and reducing the production cost.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A casting batch pouring tool, including a sand box, characterized in that: A mesh plate is arranged in the sand box, and positioning holes distributed in a matrix are opened on the mesh plate; a mold is inserted into the positioning holes, the upper end of the mold is open and the upper end of the mold is higher than the molding sand in the sand box, and a vacuum joint is arranged on the sand box.

2. A casting batch pouring tool according to claim 1, characterized in that: The sand box comprises an outer box body and an inner net box, a vacuum cavity is formed between the inner net box and the outer box body, and the vacuum joint is connected with the vacuum cavity.

3. A casting batch pouring tool according to claim 2, characterized in that: The outer box and the inner net box are both structures with openings upward, and the outer side wall of the inner net box is fixedly connected to the inner side wall of the outer box via a ring plate.

4. A casting batch pouring tool according to claim 1, characterized in that: The opening side wall of the mold is provided with a notch groove, and the notch grooves between two adjacent molds are connected by a slot mold.

5. A casting batch pouring tool according to claim 4, characterized in that: The outer dimensions of the mold are consistent with the dimensions of the positioning hole.

6. A casting batch pouring tool according to claim 1, characterized in that: A positioning protrusion is arranged on the outer side of the mold, and the positioning protrusion abuts against the mesh plate.

7. The batch casting tool according to claim 1, characterized in that: The mold is provided with air holes.

8. A casting batch pouring tool according to claim 7, characterized in that: The air holes are arranged at the bottom of the mold.

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