Die-casting die with rapid stub bar separation function

Abstract

The invention relates to a die-casting die with a rapid stub bar separation function. The die-casting die comprises a base. The lower die is fixedly arranged on the base; the sliding block inserts are arranged on the upper surface of the lower die in a sliding manner, and the four sliding block inserts move close to or away from the center of the lower die; the upper die is arranged on the base in a sliding mode, the upper die moves close to or away from the lower die, a feeding hole is formed in the upper die, and the feeding hole is in a stepped hole shape; one end of the guide rod is connected with the upper die, the lower end of the guide rod penetrates through the sliding block insert in a sliding manner, and the guide rod is used for converting vertical movement of the upper die into horizontal movement of the sliding block insert; and the material pulling block is arranged on one of the sliding block inserts and is provided with a concave part, and the concave part is used for molten metal to flow in. The die has the effect that components in the die are not damaged while the stub bars are rapidly separated.

Description

Technical Field

[0001] The present application relates to the field of die-casting devices, and in particular to a die-casting mold with a function of quickly separating the sprue. Background Art

[0002] A die-casting mold is a tool for casting metal parts, a tool for completing the die-casting process on a dedicated die-casting forging machine. The basic die-casting process is as follows: the molten metal is first cast into the cavity of the mold at a low speed or a high speed. The mold has a movable cavity surface, which is pressurized and forged during the cooling process of the molten metal, eliminating the shrinkage and porosity defects of the blank and making the internal structure of the blank reach the broken grains in the forged state.

[0003] In the related art, limited by the shape of the product to be manufactured, for example, when the four sides of the product need to be formed by slider inserts, the sprue can only be set at the position where the slider inserts are located. In order to demold, a stepped hole structure can only be formed on the upper mold to forcibly break the sprue through the opening of the upper mold and the lower mold. However, this demolding method is likely to damage the upper mold and the slider inserts. Summary of the Invention

[0004] In order to quickly separate the sprue without damaging the components in the mold, the present application provides a die-casting mold with a function of quickly separating the sprue.

[0005] The die-casting mold with a function of quickly separating the sprue provided by the present application adopts the following technical solutions: A die-casting mold with a function of quickly separating the sprue, comprising: A base A lower mold, fixedly arranged on the base Slider inserts, slidably arranged on the upper surface of the lower mold, and the four slider inserts move closer to or away from the center of the lower mold An upper mold, slidably arranged on the base, the upper mold moves closer to or away from the lower mold, the upper mold is provided with a feed hole, and the feed hole is in the shape of a stepped hole A guide rod, one end of which is connected to the upper mold, and the lower end slidably penetrates through the slider insert, for converting the vertical movement of the upper mold into the horizontal movement of the slider insert A sprue pulling block, arranged on one of the slider inserts, the sprue pulling block is provided with a recess, and the recess is for the molten metal to flow into

[0006] By adopting the above technical solution, due to the setting of the recessed part on the pulling block, during the mold opening process, the separation of the upper mold and the lower mold can apply a vertical pulling force to the material head, and the movement of the pulling block can apply a horizontal pulling force to the material head, so that the material head will be easier to tear off. Therefore, while achieving rapid separation of the material head, it is not easy to damage the upper mold, slider insert and other components.

[0007] Preferably, the material pulling block is provided with a material pulling groove, and the material pulling groove serves as the recessed portion.

[0008] By adopting the above technical solution, compared with the method in which the recessed portion is in the shape of a hole, this design method can generate a horizontal pulling force on the material head while also making it easier for the material head to escape from the recessed portion, thereby reducing the cleaning of the mold during use.

[0009] Preferably, the pulling groove is located on a side surface of the pulling block close to the center of the lower mold.

[0010] By adopting the above technical solution, the direction in which the molten metal flows into the pulling trough is horizontal, so when the mold is opened, while sufficient horizontal pulling force is provided to the material head, the material head is also easier to escape from the pulling trough.

[0011] Preferably, the tearing groove is a horizontally extending through groove structure.

[0012] By adopting the above technical solution, the molten metal can fill the pulling groove more fully to provide sufficient horizontal pulling force for the material head during subsequent demolding, and the material head can be more easily removed from the pulling groove to make it less likely to damage the pulling block.

[0013] Preferably, the upper end surface of the tearing block is exposed in the feeding hole.

[0014] By adopting the above technical solution, the friction between the upper end surface of the tearing block and the material head can be used to increase the pulling force on the material head in the horizontal direction when opening the mold, so that the material head can be torn off more smoothly.

[0015] Preferably, the side surface of the pulling block adjacent to the pulling groove is exposed in the feeding hole.

[0016] By adopting the above technical solution, the friction between the side of the tearing block and the material head can be used to increase the pulling force on the material head in the horizontal direction when opening the mold, so that the material head can be torn off more smoothly.

[0017] Preferably, the material pulling groove is narrowed from the groove opening to the groove bottom.

[0018] By adopting the above technical solution, the friction between the material pulling groove and the material head is enhanced by increasing the depth of the material pulling groove, while the smoothness of the material head leaving the material pulling groove can be maintained.

[0019] Preferably, the material pulling block is rotatably arranged, the rotating shaft of the material pulling block is in the vertical direction, and the material pulling block is connected with a reciprocating rotating and pulling assembly for making the material pulling block perform reciprocating swinging while the mold is opened.

[0020] By adopting the above technical solution, the pulling force on the sprue in the horizontal direction can have more directions, so that the sprue can be more easily broken.

[0021] Preferably, the reciprocating rotating and pulling assembly includes a driving shaft, an output swing rod, a connecting pin and a gear transmission member. The driving shaft is rotatably arranged on the base. The driving shaft is provided with a guiding groove which is annular around the axis of the driving shaft and extends in a wavy shape along the axis direction of the driving shaft. One end of the output swing rod is connected with the material pulling block. One end of the connecting shaft is slidably embedded in the guiding groove and the other end is rotatably connected with the output swing rod. The gear transmission member connects the upper mold and the driving shaft for driving the driving shaft to rotate when the mold is opened.

[0022] By adopting the above technical solution, in the process of separating the upper mold from the lower mold, the driving shaft can be rotated by means of the gear transmission member. The rotating driving shaft makes the connecting pin perform reciprocating linear motion by means of the guiding groove, and the connecting pin makes the output swing rod perform reciprocating swinging, so that the material pulling block can perform reciprocating swinging, thereby promoting the separation of the sprue while keeping the mold structure simple.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Due to the arrangement of the concave part on the material pulling block, in the process of mold opening, the separation of the upper mold and the lower mold can apply a pulling force in the vertical direction to the sprue, and the movement of the material pulling block can apply a pulling force in the horizontal direction to the sprue, so that the sprue will be more easily broken. Therefore, while realizing the rapid separation of the sprue, the components such as the upper mold and the slider insert are not easily damaged. 2. The pulling force on the sprue in the horizontal direction can have more directions, so that the sprue can be more easily broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structure diagram of the die-casting mold in Embodiment 1 of the present application.

[0025] Figure 2 is a schematic diagram showing the cooperation structure between the material pulling block and the sprue in Embodiment 1 of the present application.

[0026] Figure 3 is a schematic diagram showing the specific structure of the material pulling block in Embodiment 1 of the present application.

[0027] Figure 4This is a schematic diagram in Embodiment 2 of the present application to illustrate the cooperation structure between the material pulling block and the reciprocating rotary material pulling assembly.

[0028] Explanation of reference numerals: 1, base; 2, lower die; 3, slider insert; 4, upper die; 41, feeding hole; 5, guide rod; 6, material pulling block; 61, material pulling groove; 7, reciprocating rotary material pulling assembly; 71, driving shaft; 72, output swing rod; 73, connecting pin; 74, gear transmission member; 8, guiding groove. Detailed implementation manners

[0029] The following further elaborates on the present application in conjunction with the attached Figures 1-4 drawings.

[0030] Embodiment 1 of the present application discloses a die-casting mold with a fast sprue separation function.

[0031] Embodiment 1 Referring to Figure 1 and Figure 2 , the die-casting mold with a fast sprue separation function includes a base 1, a lower die 2, a slider insert 3, an upper die 4, a guide rod 5, and a material pulling block 6. The lower die 2 is fixedly arranged on the base 1; the slider insert 3 is slidably arranged on the upper surface of the lower die 2, and the four slider inserts 3 move in the direction close to or away from the center of the lower die 2; the upper die 4 is slidably arranged on the base 1, and the upper die 4 moves in the direction close to or away from the lower die 2. The upper die 4 is provided with a vertically extending feeding hole 41, and the feeding hole 41 is a stepped hole, specifically, the feeding hole 41 has an obvious inner diameter change at the upper end; one end of the guide rod 5 is fixedly connected to the upper die 4, and the lower end slidably penetrates through the slider insert 3. The guide rod 5 is inclined, so that the vertical movement of the upper die 4 can be converted into the horizontal movement of the slider insert 3; the material pulling block 6 is fixedly installed on one of the slider inserts 3, and the material pulling block 6 is provided with a recessed part for the molten metal to flow into.

[0032] Referring to Figure 1 and Figure 2 , due to the setting of the recessed part on the material pulling block 6, during the mold opening process, the separation of the upper die 4 and the lower die 2 can apply a vertical pulling force to the sprue, and the movement of the material pulling block 6 can apply a horizontal pulling force to the sprue. In this way, the sprue is more easily broken, so that while realizing the fast separation of the sprue, the components such as the upper die 4 and the slider insert 3 are not easily damaged.

[0033] Referring to Figure 1 and Figure 2 , for the setting of the recessed part, the following factors need to be considered. For example, whether the recessed part is easily filled with molten metal, and then, whether the sprue is easily removed from the recessed part, and then, whether the friction force between the recessed part and the sprue is sufficient. Therefore, considering the above three factors comprehensively, the material pulling block 6 is provided with a material pulling groove 61 as the recessed part.

[0034] Reference Figure 2 and Figure 3 In order to further enhance the separation effect of the material head, but at the same time fully protect the pulling block 6, the pulling groove 61 can be optimized. First, the pulling groove 61 is located on the side surface of the pulling block 6 close to the center of the lower mold 2, so that the direction in which the molten metal flows into the pulling groove 61 is horizontal. When the mold is opened, sufficient horizontal pulling force can be provided to the material head, and the material head can be more easily removed from the pulling groove 61; second, the pulling groove 61 is a horizontally extending through groove structure, so that the structure of the pulling groove 61 can be used to , allowing the molten metal to fill the pulling groove 61 more fully, so as to provide sufficient horizontal pulling force for the material head during subsequent demolding, and also allow the material head to be more easily removed from the pulling groove 61, so as to be less likely to damage the pulling block 6; thirdly, the pulling groove 61 is narrowed from the groove mouth to the groove bottom, that is, the closer to the groove bottom, the less molten metal the pulling groove 61 can accommodate. Therefore, while increasing the depth of the pulling groove 61 to increase the friction between the pulling groove 61 and the material head, the smoothness of the material head leaving the pulling groove 61 can be maintained.

[0035] Reference Figure 2 and Figure 3 In order to further improve the separation effect of the material head, the pulling block 6 itself can also be optimized. Specifically, firstly, the upper end surface of the pulling block 6 is exposed in the feed hole 41, and the friction between the upper end surface of the pulling block 6 and the material head can be used to increase the pulling force on the material head in the horizontal direction when the mold is opened. Secondly, the side surface of the pulling block 6 adjacent to the pulling groove 61 is exposed in the feed hole 41, and the friction between the side surface of the pulling block 6 and the material head can be used to increase the pulling force on the material head in the horizontal direction when the mold is opened. In summary, the material head can be torn off more smoothly.

[0036] The implementation principle of a die-casting mold with a rapid material head separation function in an embodiment of the present application is as follows: due to the setting of the recessed portion on the pulling block 6, during the mold opening process, the separation of the upper mold 4 and the lower mold 2 can apply a vertical pulling force to the material head, and the movement of the pulling block 6 can apply a horizontal pulling force to the material head, so that the material head will be more easily torn off, so that while achieving rapid separation of the material head, it is not easy to damage components such as the upper mold 4 and the slider insert 3.

[0037] Example 2 Reference Figure 4 The difference from Example 1 is that the pulling block 6 is rotatably arranged, the rotating axis of the pulling block 6 is in the vertical direction, and the rotating axis of the pulling block 6 passes through its own center. At the same time, the pulling block 6 is also connected to a reciprocating pulling component 7 to allow the pulling block 6 to perform reciprocating linear motion within a predetermined angle range when opening the mold. In this way, with the help of rotation, horizontal pulling force in more directions can be provided, so that the material head can be torn off more smoothly.

[0038] Refer to Figure 4 , the reciprocating pulling component 7 includes a driving shaft 71, an output swing rod 72, a connecting pin 73 and a gear transmission member 74. The driving shaft 71 is rotatably arranged on the base 1. A guiding groove 8 is formed in the driving shaft 71. The guiding groove 8 is annular around the axis of the driving shaft 71, and the guiding groove 8 extends in a wavy shape along the axial direction of the driving shaft 71; one end of the output swing rod 72 is connected to the material pulling block 6; one end of the connecting shaft is slidably embedded in the guiding groove 8, and the other end is rotatably connected to the output swing rod 72; the gear transmission member 74 connects the upper die 4 (refer to Figure 2 ), and the driving shaft 71. Specifically, it can be a component composed of elements such as gears and racks, so as to drive the driving shaft 71 to rotate when the upper die 4 and the lower die 2 are separated. Then, the rotating driving shaft 71 uses the guiding groove 8 to make the connecting pin 73 perform a reciprocating linear motion, and the connecting pin 73 makes the output swing rod 72 perform a reciprocating swing, so that the material pulling block 6 can perform a reciprocating swing, thereby promoting the separation of the material head while keeping the die structure simple.

[0039] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A die-casting mold with a rapid slug separation function, characterized in that: include: Base (1); A lower mold (2) is fixedly arranged on the base (1); A slider insert (3) is slidably arranged on the upper surface of the lower mold (2), and the four slider inserts (3) move toward or away from the center of the lower mold (2); An upper die (4) is slidably arranged on the base (1), the upper die (4) moves towards or away from the lower die (2), and the upper die (4) is provided with a feed hole (41), and the feed hole (41) is in the shape of a stepped hole; A guide rod (5), one end of which is connected to the upper mold (4), and the lower end of which is slidably arranged through the slider insert (3), so as to convert the vertical movement of the upper mold (4) into the horizontal movement of the slider insert (3); The pulling block (6) is arranged on one of the slider inserts (3), and the pulling block (6) is provided with a recessed portion for molten metal to flow into.

2. The die-casting mold with rapid slug separation function according to claim 1, characterized in that: The material pulling block (6) is provided with a material pulling groove (61), and the material pulling groove (61) serves as the recessed portion.

3. The die-casting mold with rapid slug separation function according to claim 2, characterized in that: The material pulling groove (61) is located on a side surface of the material pulling block (6) close to the center of the lower mold (2).

4. The die-casting mold with rapid slug separation function according to claim 3, characterized in that: The material pulling groove (61) is a through groove structure extending horizontally.

5. The die-casting mold with rapid slug separation function according to claim 3, characterized in that: The upper end surface of the pulling block (6) is exposed in the feeding hole (41).

6. The die-casting mold with rapid slug separation function according to claim 3, characterized in that: The side surface of the material pulling block (6) adjacent to the material pulling groove (61) is exposed in the material feeding hole (41).

7. The die-casting mold with rapid slug separation function according to claim 3, characterized in that: The material pulling groove (61) is narrowed from the groove opening to the groove bottom.

8. The die-casting mold with rapid slug separation function according to claim 3, characterized in that: The pulling block (6) is rotatably arranged, and the rotating shaft of the pulling block (6) is in a vertical direction. The pulling block (6) is connected with a reciprocating pulling assembly (7) for allowing the pulling block (6) to swing back and forth while the mold is opened.

9. The die-casting mold with rapid slug separation function according to claim 8, characterized in that: The reciprocating pulling assembly (7) includes a driving shaft (71), an output rocker (72), a connecting pin (73) and a gear transmission member (74); the driving shaft (71) is rotatably arranged on the base (1); the driving shaft (71) is provided with a guide groove (8); the guide groove (8) is annular around the axis of the driving shaft (71); the guide groove (8) is extended in a wave-like manner along the axis direction of the driving shaft (71); one end of the output rocker (72) is connected to the pulling block (6); one end of the connecting shaft is slidably embedded in the guide groove (8), and the other end is rotatably connected to the output rocker (72); the gear transmission member (74) connects the upper mold (4) and the driving shaft (71), and is used to drive the driving shaft (71) to rotate when the mold is opened.

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