Pouring gate stop block, pouring cup and gravity casting mold

Abstract

The utility model belongs to the technical field of gravity casting molds, and provides a sprue stop block, a sprue cup and a gravity casting mold, the sprue stop block and the sprue cup are in wedge-shaped connection, the sprue stop block and the sprue cup are connected with an upper mold of the casting mold through bolts, and the sprue stop block is mainly used for preventing aluminum water from overflowing. The utility model can reduce the weight of the die and save the cost of the die by reducing the material of the die, can prevent the overflow of molten aluminum, reduce the risk of the overflow of the molten aluminum in the pouring process, enhance the positioning of the die and prevent the upper and lower dies from being staggered, and is economical, practical, cost-saving, high in quality and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of gravity casting molds, in particular to a pouring gate stopper, a pouring gate cup and a mold. Background Art

[0002] In the field of aluminum alloy gravity casting molds, during the design of gravity casting molds, the pouring cup for pouring molten aluminum has an inclined pressure angle setting. In order to prevent the molten aluminum from overflowing, it needs to fit with the upper mold, so the thickness of the upper mold is generally set flush with the pouring cup. The height of the pouring cup is related to the pressure angle, which is generally about 1.5-2 times the thickness of the product. The thickness required for the upper mold is generally only 1.1 times the thickness of the product. Due to the height of the pouring cup, a lot of mold space is wasted, and the mold weight increases while the mold material cost also increases. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a pouring stopper, a pouring cup and a mold for a gravity casting mold, so as to solve the waste of current gravity casting mold materials.

[0004] The technical solution of the utility model is: a gate stopper, comprising a stopper body, one side of the stopper body is a positioning upper inclined surface, the positioning inclined surface is provided with two symmetrically arranged anti-fire grooves, the stopper body has more than two assembly screw holes arranged in a vertical direction, and the bottom surface of the stopper body is a lower positioning surface.

[0005] The block body is a quadrangular column group, and the cross section of the block body is a right-angled trapezoid.

[0006] The thickness of the block body is Hm=L*t*g*α, where L is the flow of liquid metal, that is, the horizontal distance from the center of the sprue to the farthest point of the casting, t is the pouring time, g is the acceleration of gravity, and α is the pressure angle.

[0007] A pouring cup, comprising a pouring stopper and a cup body;

[0008] The gate stopper includes a block body, one side of which is a positioning inclined surface, on which are two symmetrically arranged anti-fire grooves, and the block body has more than two assembly screw holes arranged in a vertical direction; the cup body has a gate, and both sides of the gate are matching inclined surfaces, on which are fireproof grooves, the gate stopper is connected to the upper part of the fireproof groove of the matching inclined surface of the gate through the anti-fire groove of the positioning upper inclined surface, and a positioning boss is provided at the bottom of the gate.

[0009] The lower part of the cup body is provided with a fixing seat, and the fixing seat is provided with a horizontally arranged assembly hole.

[0010] The lower part of the cup body is provided with an extending part extending downward, and the extending part forms a fixing seat.

[0011] The block body is a quadrangular column group, and the cross section of the block body is a right-angled trapezoid.

[0012] A gravity casting mold comprises a mold, a pouring cup as described above mounted on one side of the mold, the lower part of the pouring cup being connected to the mold cavity of the mold; the mold comprises an upper mold and a lower mold; a block body on one side of the cup body of the pouring cup is fixed on the upper mold, the bottom surface of the block body is a lower positioning surface corresponding to the upper surface of the upper mold, and a fixing seat at the lower part of the cup body of the pouring cup is fixed to the side surface of the lower mold.

[0013] There is a positioning groove on the side of the mold for positioning the cup body. The bottom of the positioning groove is a positioning step surface that matches the positioning boss at the bottom of the gate. The positioning step surface is located on the lower mold. The two side walls of the positioning groove form a positioning lower inclined surface. The positioning lower inclined surface has a fire prevention groove that matches the lower part of the fire prevention groove of the matching inclined surface. The positioning lower inclined surface is located on the side of the upper mold.

[0014] During assembly, the upper surface of the upper mold fits with the lower positioning surface of the block body, the fixing seat at the bottom of the cup body fits with the side of the lower mold, the horizontally arranged screws are connected to the lower mold through the assembly holes of the fixing seat, and the vertically arranged screws are connected to the upper mold through the assembly screw holes of the block body.

[0015] By designing a gate stopper that fits the gate cup and connects to the upper mold, the injection height is increased, thereby reducing the mold thickness and saving materials. The wedge-shaped connection between the gate stopper and the gate cup plays a role in positioning the upper and lower molds, preventing the upper and lower molds from misaligning when opening and closing, preventing aluminum water from overflowing, and reducing burrs during the pouring process. The inclination of the slot setting of the gate stopper can make the mold opening smooth and improve production efficiency.

[0016] The application of the gate stopper not only saves the mold material cost, but also plays a role in positioning the mold to prevent misalignment. The thickness of the gate stopper can be adjusted according to the total height required after the pressure angle is calculated. The thicker the gate stopper, the more mold material cost is saved, which is economical and practical. The thickness of the gate stopper Hm=L*t*g*α, where L is the flow of liquid metal, that is, the horizontal distance from the center of the sprue to the farthest point of the casting (mm), t is the pouring time (s), g is the acceleration of gravity, and α is the pressure angle (degrees). BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 This is a schematic diagram of the structure of a gate stopper in Embodiment 1 of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the connection between the pouring stopper and the pouring cup in the first embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the connection between the pouring cup, the pouring stopper, and the upper and lower molds in the first embodiment of the utility model;

[0021] Figure 4 This is a schematic structural diagram of a pouring cup according to a first embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with specific embodiments. However, the use and purpose of these exemplary embodiments are only used to illustrate the utility model, and do not constitute any form of limitation on the actual protection scope of the utility model, nor do they limit the protection scope of the utility model to them.

[0023] like Figure 1 As shown, this embodiment provides a gate stopper for a gravity casting mold, including a threaded hole 1 connected to an upper mold 7, and an anti-fire escape groove 20 connected to a pouring cup. The anti-fire escape groove 20 prevents aluminum liquid from overflowing and producing flash during the pouring process, while strengthening the positioning of the upper and lower molds to prevent misalignment.

[0024] like Figure 2 As shown, the gate stopper 2 and the gate cup 3 are connected by a fireproof groove wedge shape, which makes mold opening convenient and easy, and improves efficiency.

[0025] like Figure 3 , 4 As shown, the pouring cup 3 has a pouring gate 21, and the two sides of the pouring gate are matching inclined surfaces, and a fireproof groove 5 is arranged on the matching inclined surface. The pouring gate stopper is connected to the upper part of the fireproof groove 5 of the matching inclined surface of the pouring gate through the anti-fire escape groove 20 of the positioning upper inclined surface. There is a positioning boss at the bottom of the pouring gate, and the positioning step surface matching the positioning boss at the bottom of the pouring gate is located on the lower mold 6. The positioning lower inclined surface is located on the side of the upper mold, and the positioning lower inclined surface has an anti-fire escape groove corresponding to the lower part of the fireproof groove 5.

[0026] The pouring cup 3 is connected to the lower mold 6 by bolts, the pouring stopper 2 is connected to the upper mold 7 by bolts, the pouring stopper 2 and the pouring cup 3 are wedge-shaped connected through the fireproof groove 5, the thickness of the pouring stopper 2 is the material thickness saved by the mold, the overall weight of the mold is reduced, which is beneficial to lifting and cost.

[0027] The application of the gate stopper 2 has the following main advantages: 1. It saves the cost of mold materials and reduces the weight of the mold by reducing the thickness of the mold, which is economical and practical; 2. It is wedge-shaped connected with the pouring cup 3 to prevent aluminum liquid from overflowing and reduce burrs caused by loose mold clamping, which is efficient and practical; 3. The gate stopper 2 and the pouring cup 3 are respectively connected to the upper and lower molds, and the wedge-shaped connection between the gate stopper 2 and the pouring cup 3 enhances the positioning between the upper and lower molds and improves the problems of mold misalignment and loose mold clamping.

[0028] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms are also defined by the claims attached to this application.

Claims

1. A gate stopper, characterized in that: The invention comprises a block body, one side of which is an upper positioning inclined surface, the positioning inclined surface is provided with two symmetrically arranged anti-fire grooves (20), the block body has more than two assembly screw holes (1) arranged in a vertical direction, and the bottom surface of the block body is a lower positioning surface.

2. The gate stopper according to claim 1, characterized in that: The block body is a quadrangular column group, and the cross section of the block body is a right-angled trapezoid.

3. The gate stopper according to claim 1, characterized in that: The thickness of the block body is Hm=L*t*g*α, where L is the flow of liquid metal, that is, the horizontal distance from the center of the sprue to the farthest point of the casting, t is the pouring time, g is the acceleration of gravity, and α is the pressure angle.

4. A pouring cup, characterized in that: Including gate stopper and cup body; The gate stopper comprises a block body, one side of the block body is a positioning inclined surface, the positioning inclined surface is provided with two symmetrically arranged anti-fire grooves (20), and the block body has more than two assembly screw holes (1) arranged in a vertical direction; The cup body has a pouring gate (21), and the two sides of the pouring gate are matching inclined surfaces, and a fireproof groove (5) is arranged on the matching inclined surface. The pouring gate stopper is connected to the upper part of the fireproof groove (5) of the matching inclined surface of the pouring gate through the fireproof groove (20) of the upper inclined surface, and a positioning boss is arranged at the bottom of the pouring gate.

5. The pouring cup according to claim 4, characterized in that: The lower part of the cup body is provided with a fixing seat, and the fixing seat is provided with a horizontally arranged assembly hole (4).

6. The pouring cup according to claim 4, characterized in that: The lower part of the cup body is provided with an extending part extending downward, and the extending part forms a fixing seat.

7. The pouring cup according to claim 4, characterized in that: The block body is a quadrangular column group, and the cross section of the block body is a right-angled trapezoid.

8. A gravity casting mold, characterized in that: It comprises a mould, a pouring cup as claimed in any one of claims 3 to 6 mounted on one side of the mould, and the lower part of the pouring cup is connected to the mould cavity of the mould; the mould comprises an upper mould (7) and a lower mould (6); a stopper body on one side of the cup body of the pouring cup is fixed on the upper mould (7), the bottom surface of the stopper body is a lower positioning surface corresponding to the upper surface of the upper mould (7), and a fixing seat at the lower part of the cup body of the pouring cup is fixed to the side of the lower mould (6).

9. The gravity casting mold according to claim 8, characterized in that: The mold side has a positioning groove for positioning the cup body, the bottom of the positioning groove is a positioning step surface that matches the positioning boss at the bottom of the gate, the positioning step surface is located on the lower mold (6), and the two side walls of the positioning groove form a positioning lower inclined surface, the positioning lower inclined surface has a fire prevention groove that matches the lower part of the fire prevention groove (5) of the matching inclined surface, and the positioning lower inclined surface is located on the side of the upper mold (7).

10. The gravity casting mold according to claim 8, characterized in that: During assembly, the upper surface of the upper mold (7) is fitted with the lower positioning surface of the block body, the fixing seat at the lower part of the cup body is fitted with the side surface of the lower mold (6), the horizontally arranged screws are connected to the lower mold (6) through the assembly holes (4) of the fixing seat, and the vertically arranged screws are connected to the upper mold (7) through the assembly screw holes (1) of the block body.

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