CN116475376A - Upward injection vertical die-closing die casting machine and die casting method - Google Patents

Abstract

The invention belongs to the technical field of die-casting machines, and in particular relates to an up-shot vertical die-clamping die-casting machine and a die-casting method. The upper injection vertical mold clamping die-casting machine includes a moving mold, a static mold, a Corinthian column, a dynamic platen, a static platen, a fixed seat, an injection mechanism and a blocking mechanism; the Corinthian column is installed on the fixed seat, the static formwork is fixedly installed on the Corinthian column, the movable platen is slidably installed on the Gelin column, the static mold is installed on the static platen, the dynamic mold is installed on the movable platen, and the static mold is located above the dynamic mold; there is a mold cavity between the dynamic mold and the static mold; It is used to inject the metal melt in the injection through hole into the mold cavity; the static mold is provided with a first through hole communicating with the mold cavity; the blocking mechanism is installed on the fixing seat, and is used to pass through the first through hole and the mold cavity to seal the injection through hole. In the present invention, the die-casting produced by the up-shot vertical die-clamping die-casting machine has no bubble holes, which improves the quality of the die-casting.

Description

A top injection vertical die-clamping die-casting machine and die-casting method

technical field

The invention belongs to the technical field of die-casting machines, and in particular relates to an up-shot vertical die-clamping die-casting machine and a die-casting method.

Background technique

Die-casting is the process of filling the molten metal into the cavity of the die-casting model at a high speed under high pressure, and solidifying the molten metal under high pressure to form a metal die-casting. It is the most efficient metal casting method. With the development of metal die-casting, metal die-casting technology, plastic injection molding, and metal plate stamping are listed as three major molding systems. The salient features of metal die-casting are: it can form non-ferrous metal structural parts with complex shapes and thin walls. It is a high-efficiency, high-precision, high-interchangeability, low-consumption precision parts forming technology. Die-casting machine is one of the most basic elements in die-casting production. Metal die-casting molds are formed by die-casting through the operation of die-casting machines. Die-casting machines can be divided into horizontal die-casting machines and vertical die-casting machines structurally. At present, the horizontal die-casting machine is relatively mature in technology and has been widely used. However, due to the "horizontal" structure, during use, when the molten metal is poured into the melting cup for die-casting, because there is a large amount of air in the melting cup, the molten metal and air are pressed into the mold at the same time, and there will inevitably be pores inside the die-casting metal casting, which seriously affects the quality of the metal casting.

However, the existing vertical die-casting machine is still in the stage of development, and the die-casting molded parts produced by the vertical die-casting machine will also be covered with pores, and the surface slag and bottom slag on the metal melt are also integrated on the die-casting molded parts, thereby reducing the quality of the die-casting molded parts.

Contents of the invention

Aiming at the technical problems of low quality die-casting molded parts produced by the neutral vertical die-casting machine in the prior art, the present invention provides an up-shot vertical mold-closing die-casting machine and a die-casting method.

In view of the above technical problems, an embodiment of the present invention provides an upward injection vertical die-clamping die-casting machine, comprising a moving mold, a static mold, a Corinthian column, a moving platen, a static platen, a fixed seat, an injection mechanism and a blocking mechanism; There is a mold cavity between the molds;

The static mold is provided with an injection through hole; the injection mechanism is installed on the static template, and is used to inject the metal melt in the injection through hole into the mold cavity; the static mold is provided with a first through hole communicating with the mold cavity; the blocking mechanism is installed on the fixing seat, and is used to pass through the first through hole and the mold cavity to seal the injection through hole.

Optionally, the injection mechanism includes an injection pump installed on the static template and an injection rod connected to the injection pump; the blocking mechanism includes a blocking pump installed on the fixing seat and a blocking rod connected to the blocking pump, and the blocking pump is used to drive the blocking rod through the first through hole and the mold cavity to extend into and seal the injection through hole.

Optionally, the movable mold is further provided with a groove communicating with the cavity of the mold, and the inner diameter of the first through hole is larger than the outer diameter of the plunger.

Optionally, the upper injection vertical mold clamping die-casting machine further includes a movable mold driver installed on the fixed seat, the output end of the movable mold driver is connected to the movable template, and the movable mold driver is used to drive the movable mold to move toward or away from the static mold through the movable template.

Optionally, the movable mold and/or the static mold are provided with a vacuum channel communicating with the cavity of the mold.

Optionally, the upper injection vertical mold clamping die-casting machine further includes a material ejector driving member, the material ejector drive member includes a material ejector pump installed on the fixed seat and a material ejector rod connected to the material ejector pump, the end of the material ejector rod away from the material ejector pump extends into the cavity of the mold, and the material ejector pump is used to drive the material ejector rod to push the solidified molded die-casting part away from the cavity of the mold.

Optionally, the upper injection vertical mold clamping die-casting machine further includes a plurality of clamping drivers all installed on the fixed seat, and the clamping drivers are used to drive the movable mold to be pressed against the static mold through the movable platen.

Optionally, the upper injection vertical mold clamping die-casting machine further includes a support frame, and the fixing seat is installed on the support frame.

Another embodiment of the present invention also provides a die-casting method applied to the above-mentioned up-shot vertical die-clamping die-casting machine, including:

Driving the movable template to drive the movable mold to slide along the Corinthian column until it is mold-closed with the static mold, and a mold cavity is provided between the movable mold and the static mold;

After the output end of the blocking mechanism passes through the first through hole on the movable mold and the mold cavity to seal the injection through hole, inject molten metal into the injection through hole;

The output end of the injection mechanism extends into the injection through hole and squeezes the metal melt in the injection through hole, so that the gas in the injection through hole is discharged through the exhaust gap, and the exhaust gap is the gap between the output end of the injection drive member and the inner wall of the injection through hole;

The output end of the injection mechanism further squeezes the metal melt in the injection through hole, so that the metal melt in the injection through hole enters the mold cavity, and makes the output end of the blocking mechanism retract and seal the first through hole;

After the molten metal in the cavity of the mold is solidified, the molten metal is molded into a die casting in the cavity of the mold.

Optionally, the output end of the injection mechanism extends before the injection through hole, and after injecting the molten metal into the injection through hole, it further includes:

The mold cavity is extracted into a vacuum state.

In the present invention, after the movable mold and the static mold are closed, the output end of the blocking mechanism passes through the first through hole and the mold cavity and then extends into the injection through hole, so that the output end of the blocking mechanism seals the bottom of the injection through hole; then a manipulator etc. pours the metal melt into the injection through hole; the output end of the injection mechanism extends into the injection through hole and squeezes the metal melt. Gas can be discharged from the gap between the output end of the injection mechanism and the inner wall of the injection through hole, thereby ensuring that the molten metal in the injection through hole has no gas; the injection mechanism further squeezes the molten metal in the injection through hole, and the molten metal in the injection through hole is quickly squeezed into the mold cavity, and the output end of the blocking mechanism is pressed back and seals the first through hole; Take out the molded die casting.

In the present invention, the metal melt can be filled in the bottom of the injection through hole, and the output end of the injection mechanism can discharge the air above the metal melt during the process of squeezing the metal melt in the injection through hole, thereby ensuring that the metal melt injected into the mold cavity has no air or contains a very small amount of air, and then the die casting produced by the upper injection vertical mold clamping die casting machine has no air bubbles, and the quality of the die casting is improved.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of an upper injection vertical mold clamping die-casting machine provided by an embodiment of the present invention;

Fig. 2 is a partial structural schematic diagram of an upper injection vertical mold clamping die-casting machine provided by an embodiment of the present invention;

Fig. 3 is a partial structural schematic diagram of an upper injection vertical mold clamping die-casting machine provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of a die casting method provided by an embodiment of the present invention.

The reference signs in the instructions are as follows:

1. Moving template; 2. Static template; 3. Corinthian column; 4. Fixed seat; 5. Injection mechanism; 51. Injection pump; 52. Injection rod; 6. Blocking mechanism; 61. Blocking pump; 62. Blocking rod;

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

As shown in FIGS. 1 to 3 , an upper injection vertical mold clamping die-casting machine provided by an embodiment of the present invention includes a movable mold (not shown in the figure), a static mold (not shown in the figure), a Corinthian column 3, a movable template 1, a static template 2, a fixed seat 4, a shot mechanism 5 and a blocking mechanism 6; The movable mold is installed on the movable template 1, and the static mold is positioned above the movable mold; a mold cavity (not shown) is provided between the movable mold and the static mold; it can be understood that the static mold can be fixed on the Corinthian column 3 by the static template 2, and the mold cavity can be arranged on the movable mold or on the static mold, and the mold cavity is also provided on the movable mold and the static mold.

The static mold is provided with an injection through hole; the injection mechanism 5 is installed on the static template 2, and is used to inject the metal melt in the injection through hole into the mold cavity; the static mold is provided with a first through hole communicating with the mold cavity; the blocking mechanism 6 is installed on the fixing seat 4, and is used to pass through the first through hole and the mold cavity to seal the injection through hole. It can be understood that the injection mechanism 5 is installed on the top of the static template 2, and the output end of the injection mechanism 5 can pass through the first through hole on the movable template 1 and then extend into the injection through hole; the output end of the blocking mechanism 6 extends into the mold cavity after passing through the second through hole on the fixed seat 4 and the third through hole on the movable template 1; The blocking mechanism 6 is a hydraulic pump.

In the present invention, after the movable mold and the static mold are closed, the output end of the blocking mechanism 6 passes through the first through hole and the mold cavity and then extends into the injection through hole, so that the output end of the blocking mechanism 6 seals the bottom of the injection through hole; then a manipulator or the like pours the molten metal into the injection through hole; the output end of the injection mechanism 5 extends into the injection through hole and squeezes the molten metal. The gas above the liquid level can be discharged from the gap between the output end of the injection mechanism 5 and the inner wall of the injection through hole, thereby ensuring that the metal melt in the injection through hole has no gas; the injection mechanism 5 further squeezes the metal melt in the injection through hole, and the metal melt in the injection through hole is quickly squeezed into the mold cavity, and the output end of the blocking mechanism 6 is pressed back and seals the first through hole; The molded die casting can be taken out from the mold cavity.

In the present invention, the metal melt can be filled in the bottom of the injection through hole, and the output end of the injection mechanism 5 can discharge the air above the metal melt during the process of squeezing the metal melt in the injection through hole, thereby ensuring that there is no air or a very small amount of air in the metal melt injected into the mold cavity, and then the die casting produced by the upper injection vertical mold clamping die casting machine has no air bubbles, and the quality of the die casting is improved.

In one embodiment, as shown in FIGS. 1 to 3 , the injection mechanism 5 includes an injection pump 51 installed on the static template 2 and an injection rod 52 connected to the injection pump 51; the blocking mechanism 6 includes a blocking pump 7 installed on the fixed seat 4 and a blocking rod 62 connected to the blocking pump 7, and the blocking pump 7 is used to drive the blocking rod 62 to pass through the first through hole and the mold cavity to extend into and seal the injection through hole. It can be understood that the injection pump 51 is installed on the top surface of the static formwork 2, and the static mold is installed on the bottom surface of the static formwork 2. The end of the injection rod 52 away from the injection pump 51 extends into the injection through hole, and the injection pump 51 can drive the injection rod 52 to move up and down; the blocking pump 7 is installed on the lower end of the fixed seat 4, and the end of the blocking rod 62 away from the blocking pump 7 extends into the first through hole, and the blocking pump 7 can drive the blocking rod. 62 moves up and down.

In one embodiment, the movable mold is further provided with a groove (not shown in the figure) communicating with the mold cavity, and the inner diameter of the first through hole is larger than the outer diameter of the injection rod 52 . It can be understood that after the injection rod 52 squeezes the molten metal in the injection hole into the cavity of the mold, the bottom slag in the molten metal will flow into the groove, and the surface slag in the molten metal will be integrated in the injection hole. When the molten metal in the mold cavity is solidified and formed, a handle will be formed at the position of the groove and the injection hole. The surface slag and the bottom slag are respectively integrated at both ends of the handle. The material handle on the die-casting parts further improves the quality of the die-casting parts.

In addition, the first through hole is adapted to the blocking rod 62, and the injection through hole is adapted to the injection rod 52, so that the injection rod 52 drives the molten metal in the injection through hole to be extruded into the mold cavity, and when the blocking rod 62 is pressed back into the first through hole, since the outer diameter of the injection rod 52 is larger than the inner diameter of the first through hole, the limit position of the injection rod 52 is to extend into the groove, but not into the first through hole. An accident in which the blocking rod 62 crushes the blocking pump 7 occurs.

In one embodiment, as shown in FIGS. 1 to 3 , the upper injection vertical mold clamping die-casting machine further includes a movable mold driver 7 installed on the fixed base 4, the output end of the movable mold driver 7 is connected to the movable template 1, and the movable mold driver 7 is used to drive the movable mold to move toward or away from the static mold through the movable template 1. It can be understood that the movable mold driver 7 includes but is not limited to a pneumatic cylinder, a hydraulic cylinder, a screw nut mechanism, etc., and the movable mold driver 7 can drive the movable template 1 and the movable mold to move along the Corinthian column 3, so that the mold closing or mold opening between the movable mold and the static mold can be completed.

In one embodiment, the movable mold and/or the static mold are provided with a vacuum channel (not shown in the figure) communicating with the mold cavity. Understandably, the mold cavity can be drawn into a high vacuum state by a vacuum pump or the like. In this embodiment, the blocking rod 62 extends into the injection through hole and seals the bottom of the injection through hole, and after the metal melt is injected into the injection through hole, the mold cavity is extracted into a vacuum state through the vacuum channel; since the injection through hole is blocked by the metal melt, the first through hole is blocked by the blocking rod 62, so that the mold cavity can be extracted into a high vacuum state, and the mold cavity in a high vacuum state further improves the quality of the die-casting.

In one embodiment, as shown in FIG. 1 to FIG. 3 , the up-shot vertical mold clamping die-casting machine further includes an ejector driving member 8, and the ejector driving member 8 includes an ejector pump installed on the fixed seat 4 and an ejector rod connected to the ejector pump. The end of the ejector rod far away from the ejector pump extends into the mold cavity, and the ejector pump is used to drive the ejector rod to push the solidified die-casting part out of the mold cavity. It can be understood that both the fixed seat 4 and the movable mold are provided with a through hole for the ejector rod to pass through. When the molten metal in the mold cavity is formed, the ejector pump drives the ejector rod to move up to push the formed die-casting part away from the mold cavity, so that the user can take out the die-casting part from the mold cavity.

In one embodiment, as shown in FIG. 1 to FIG. 3 , the upper injection vertical mold clamping die-casting machine further includes a plurality of clamping drivers 9 all installed on the fixed seat 4, and the clamping drivers 9 are used to drive the movable mold to be pressed tightly on the static mold through the movable template 1. It can be understood that the fixed seat 4 is provided with a through hole for the output end of the keyhole driver 9 to protrude; the mold locking driver 9 includes but is not limited to a pneumatic cylinder, a hydraulic cylinder, and a screw nut mechanism; Specifically, after the movable mold driver 7 drives the movable mold to clamp the static mold, the mold clamping driver 9 drives the movable mold to be further compressed on the static mold. A plurality of mold clamping drivers 9 can clamp different areas of the movable mold and the static mold, and each mold locking driver 9 can provide different clamping forces to different regions of the movable mold and the static mold, further ensuring the tightness of the movable mold and the static mold, and then making the mold cavity can be extracted into a high vacuum state . In addition, the design of multiple mold clamping driving parts 9 reserves installation space for the moving mold driving part 7, the ejector driving part 8 and the like.

In one embodiment, as shown in FIG. 1 , the upper injection vertical mold clamping die-casting machine further includes a support frame 101 , and the fixing seat 4 is installed on the support frame 101 . It can be understood that the support frame 101 can play a role of supporting the upper injection vertical mold clamping die-casting machine, so as to facilitate the stability of the upper injection vertical mold clamping die-casting machine.

To sum up, the up-shot vertical mold-closing die-casting machine integrates gravity casting, vacuum casting, low-pressure casting, extrusion die-casting, and high-pressure die-casting into one non-porous die-casting, casting new technology and new species of die-casting machine; and the up-shot vertical mold-closing die-casting machine can provide high-efficiency, low-cost, and high-quality solutions to meet the airtightness, weldability, and high-performance requirements of new energy vehicles.

As shown in Figure 4, another embodiment of the present invention also provides a die-casting method applied to the above-mentioned up-shot vertical mold clamping die-casting machine, including:

S100, driving the movable template 1 to drive the movable mold to slide along the Corinthian column 3 until it is mold-closed with the static mold, and a mold cavity is provided between the movable mold and the static mold; understandably, the movable mold driver 7 drives the movable mold 1 and the movable mold to move toward the static mold until the movable mold and the static mold are mold-closed.

S200. After the output end of the blocking mechanism 6 passes through the first through hole on the movable mold and the mold cavity to seal the injection hole, inject molten metal into the injection hole; understandably, the blocking pump 7 drives the blocking rod 62 to move upward until the blocking rod 62 blocks the bottom of the injection hole; then use a manipulator or the like to pour the metal melt into the injection hole.

S300, the output end of the injection mechanism 5 extends into the injection through hole and squeezes the metal melt in the injection through hole, so that the gas in the injection through hole is discharged through the exhaust gap, and the exhaust gap is the gap between the output end of the injection driver and the inner wall of the injection through hole; understandably, the blocking rod 62 blocks the bottom of the injection through hole, and the injection pump 51 drives the injection rod 52 to move down. The intake air above the body can be discharged through the exhaust gap, thereby ensuring that the metal melt in the liquid injection hole has no gas or contains a very small amount of gas.

S400, the output end of the injection mechanism 5 further squeezes the molten metal in the injection through hole, so that the molten metal in the injection through hole enters the cavity of the mold, and the output end of the blocking mechanism 6 retreats and seals the first through hole; understandably, the injection pump 51 drives the injection rod 52 to further squeeze the molten metal in the injection through hole, so that the molten metal in the injection through hole returns to the cavity of the mold, and the injection rod 52 It also drives the blocking rod 62 to retreat into the first through hole.

S500. After the molten metal in the cavity of the mold is solidified, the molten metal is formed into a die casting in the cavity of the mold. It can be understood that after the molten metal in the mold cavity is solidified, the movable mold driver 7 drives the movable mold away from the static mold through the movable template 1, and the mold cavity is opened, so that the molded die casting can be taken out from the mold cavity.

The die-casting method of the present invention can eliminate the air in the metal melt as much as possible, so that the metal melt entering the mold cavity contains a very small amount of air, so that the die-casting has no air bubbles or contains a very small amount of steam pockets, thereby improving the quality of the die-casting.

In one embodiment, after the molten metal is input into the injection through hole, and before the output end of the injection mechanism 5 extends into the injection through hole, it further includes:

The mold cavity is extracted into a vacuum state. It can be understood that the blocking rod 62 extends into the injection through hole and seals the bottom of the injection through hole, and after the metal melt is injected into the injection through hole, the mold cavity is extracted into a vacuum state through the vacuum channel; since the injection through hole is blocked by the metal melt, the first through hole is blocked by the blocking rod 62, so that the mold cavity can be extracted into a high vacuum state, and the mold cavity in a high vacuum state further improves the quality of the die casting.

The above is only the embodiment of the upper injection vertical mold clamping die-casting machine and the die-casting method of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims (10)

1. An upper injection vertical die-clamping die-casting machine, characterized in that it comprises a moving mold, a static mold, a Corinthian column, a moving platen, a static platen, a fixed seat, an injection mechanism and a blocking mechanism; the said Corinthian column is mounted on the fixed seat, the static formwork is fixedly mounted on the said Corinthian column, the movable platen is slidably mounted on the said Corinthian column, the static mold is mounted on the static platen, the movable mold is installed on the movable platen, and the static mold is positioned above the movable mold; a mold is arranged between the movable mold and the static mold Cavity; The static mold is provided with an injection through hole; the injection mechanism is installed on the static template, and is used to inject the metal melt in the injection through hole into the mold cavity; the static mold is provided with a first through hole communicating with the mold cavity; the blocking mechanism is installed on the fixing seat, and is used to pass through the first through hole and the mold cavity to seal the injection through hole. 2. The upper injection vertical mold clamping die-casting machine according to claim 1, wherein the injection mechanism includes an injection pump installed on the static plate and an injection rod connected to the injection pump; the blocking mechanism includes a blocking pump installed on the fixed seat and a blocking rod connected to the blocking pump, and the blocking pump is used to drive the blocking rod to pass through the first through hole and the mold cavity to extend into and seal the injection through hole. 3. The upper injection vertical mold clamping die-casting machine according to claim 2, wherein the movable mold is further provided with a groove communicating with the mold cavity, and the inner diameter of the first through hole is larger than the outer diameter of the injection rod. 4. The upper injection vertical mold clamping die-casting machine according to claim 1, characterized in that the upper injection vertical mold clamping die-casting machine further comprises a movable mold driver installed on the fixed seat, the output end of the movable mold driver is connected to the movable mold plate, and the movable mold driver is used to drive the movable mold to move toward or away from the static mold through the movable mold plate. 5. The upper injection vertical mold clamping die-casting machine according to claim 1, characterized in that, the movable mold and/or the static mold are provided with a vacuum channel communicating with the mold cavity. 6. The upper injection vertical mold clamping die-casting machine according to claim 1, characterized in that the upper injection vertical mold clamping die-casting machine further includes a material ejector drive member, the material ejector driver includes a material ejector pump installed on the fixed seat and a material ejector rod connected to the material ejector pump, the end of the material ejector rod away from the material ejector pump extends into the mold cavity, and the material ejector pump is used to drive the material ejector rod to push the solidified molded die-casting part away from the mold cavity. 7. The upper injection vertical mold clamping die-casting machine according to claim 1, characterized in that, the upper injection vertical mold clamping die-casting machine further comprises a plurality of clamping drivers all installed on the fixed seat, and the clamping drivers are used to drive the movable mold to be pressed tightly on the static mold through the movable platen. 8. The upper injection vertical mold clamping die-casting machine according to claim 1, characterized in that, the upper injection vertical mold clamping die-casting machine further comprises a support frame, and the fixing seat is installed on the support frame. 9. A die-casting method applied to the upper injection vertical mold clamping die-casting machine according to any one of claims 1 to 8, characterized in that it comprises: Driving the movable template to drive the movable mold to slide along the Corinthian column until it is mold-closed with the static mold, and a mold cavity is provided between the movable mold and the static mold; After the output end of the blocking mechanism passes through the first through hole on the movable mold and the mold cavity to seal the injection through hole, inject molten metal into the injection through hole; The output end of the injection mechanism extends into the injection through hole and squeezes the metal melt in the injection through hole, so that the gas in the injection through hole is discharged through the exhaust gap, and the exhaust gap is the gap between the output end of the injection drive member and the inner wall of the injection through hole; The output end of the injection mechanism further squeezes the metal melt in the injection through hole, so that the metal melt in the injection through hole enters the mold cavity, and makes the output end of the blocking mechanism retract and seal the first through hole; After the molten metal in the cavity of the mold is solidified, the molten metal is molded into a die casting in the cavity of the mold. 10. The die-casting method according to claim 9, characterized in that, after injecting the molten metal into the injection through hole and before the output end of the injection mechanism extends into the injection through hole, further comprising: The mold cavity is extracted into a vacuum state.