CN201906813U - A secondary pressurized die-casting mold for manufacturing skulls - Google Patents

Abstract

The utility model relates to a die casting die technical field especially relates to a secondary pressure boost die casting die for making skull. The utility model discloses a movable mould board has installed the extrusion round pin in deviating from fixed die plate one side, and the extrusion round pin has set pressure cylinder, and pressure cylinder and extrusion round pin drive are connected, and the cover half is inserted and the movable mould is inserted between the shaping has the stock solution chamber, and the extrusion round pin runs through the movable mould board and extends to the stock solution chamber. The utility model discloses the pressurize stage of shaping skull foundry goods, pressure boost cylinder drive extrusion pin gos forward and extrudees the molten metal in the stock solution chamber, and under the impetus of extrusion pin, the molten metal in the stock solution chamber supplyes in to the skull die cavity and then fills the wall thickness position of skull foundry goods because shrink and the gas pocket that produces, sunken etc.. Therefore, the utility model discloses can reduce the gas pocket of the skull foundry goods wall thickness department after the shaping effectively, loose and sunken defect, skull foundry goods shaping high quality.

Description

A secondary pressurized die-casting mold for manufacturing skulls

technical field

The utility model relates to the technical field of die-casting molds, in particular to a secondary pressure-pressurized die-casting mold for manufacturing skulls.

Background technique

The head cover is an important part of mechanical parts such as cylinders. Due to its large local wall thickness and high quality requirements, for example, the surrounding wall of the head cover must be free from pores, looseness, and dents. Manufacturing and processing brings great difficulty.

Existing craniums are often manufactured by die-casting, that is, through a die-casting mold, molten metal such as aluminum or aluminum alloy is injected into the cavity of the cranium and finally formed; however, existing die-casting molds have There are many defects, for example, it is difficult to meet the above requirements for the molded head cover, even if the gate and gating system are improved, the quality requirements of no porosity, no porosity and no depression can not be achieved, and the molding quality of the head cover casting is poor.

Contents of the invention

The purpose of the utility model is to provide a secondary pressurized die-casting mold for manufacturing skulls for the deficiencies of the prior art, which can effectively reduce the thickness of the skull casting wall Porosity, porosity and depression defects in the thick part, the molding quality of the skull casting is high.

In order to achieve the above object, the utility model is realized through the following technical solutions.

A secondary pressurized die-casting mold for manufacturing head covers, including a movable template and a fixed template, the movable template is equipped with a movable mold core on the side facing the fixed template, and the fixed template is equipped with a mold core to cooperate with the movable mold core. The fixed mold core, the movable mold core is embedded with the movable mold insert, the fixed mold core is embedded with the fixed mold insert, and the movable mold core, the movable mold insert, the fixed mold core and the fixed mold insert are jointly assembled into a head cover The cavity, the movable platen is equipped with an extrusion pin on the side away from the fixed platen, and the extrusion pin is equipped with a booster cylinder, which is driven and connected to the extrusion pin, and the fixed mold insert and the movable mold insert are formed There is a liquid storage chamber, and the extrusion pin runs through the movable template and extends to the liquid storage chamber.

Wherein, the movable template is provided with a pusher device on the side away from the fixed template, and the pusher device includes a thimble panel and a thimble bottom plate, and a thimble and a reset rod are clamped between the thimble panel and the thimble bottom plate. The oil cylinder is fixed on the thimble bottom plate by screws.

Wherein, the piston rod of the pressurized oil cylinder is connected with a labor-saving joint, and a coupler is arranged between the labor-saving joint and the extruding pin, and the labor-saving joint and the extruding pin are respectively fixed at both ends of the coupler.

Wherein, the interior of the extrusion pin is provided with a circulating cooling water channel, the circulating cooling water channel includes a water inlet and an outlet channel, the water inlet channel and the water outlet channel respectively extend to the working end of the extrusion pin, and the extrusion pin corresponds to the water inlet channel and the outlet channel. The waterway is equipped with a water connection.

Wherein, the extrusion pin is equipped with an extrusion pin sleeve, the working end of the extrusion pin is movably socketed with the extrusion pin sleeve, and the extrusion pin sleeve is embedded in the movable mold insert and It is clamped between the movable mold insert and the movable template.

The beneficial effects of the utility model are as follows: a secondary pressurized die-casting mold for manufacturing head covers described in the utility model includes a movable template and a fixed template, and the movable template is installed on the side facing the fixed template. The movable mold core, the fixed mold core is equipped with the fixed mold core matched with the movable mold core, the movable mold core is embedded with the movable mold insert, the fixed mold core is embedded with the fixed mold insert, the movable mold core, the movable mold insert, The fixed mold core and the fixed mold inserts together form a head cover cavity. The movable platen is equipped with an extrusion pin on the side away from the fixed platen. The extrusion pin is equipped with a booster cylinder, which drives the extrusion pin. Connection, a liquid storage chamber is formed between the fixed mold insert and the movable mold insert, and the extrusion pin penetrates the movable template and extends to the liquid storage chamber. In the pressure-holding stage of the head cover casting of the utility model, the pressurized oil cylinder drives the extrusion pin to advance and squeezes the molten metal in the liquid storage chamber. Under the pushing action of the extrusion pin, the molten metal in the liquid storage chamber Supplement to the skull cavity to fill the air holes, depressions, etc. caused by the shrinkage of the wall thickness of the skull casting. Therefore, the utility model can effectively reduce the defects of air holes, looseness and depressions at the wall thickness of the formed skull casting, and the molding quality of the skull casting is high.

Description of drawings

The utility model will be further described below using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present utility model.

Fig. 1 is a structural schematic diagram of a secondary pressurized die-casting die for manufacturing a head cover according to the present invention.

FIG. 2 is a partially enlarged schematic diagram of the position "A" shown in FIG. 1 .

In Figure 1 and Figure 2 include:

1——Moving template 11——Moving mold core 12——Moving mold insert

2——Fixed template 21——Fixed mold core 22——Fixed mold insert

3——Extrusion pin 4——Boost cylinder 5——Push device

51——thimble panel 52——thimble bottom plate 6——labor-saving joint

7——Coupler 8——Circulating cooling water channel 9——Water delivery connection .

Detailed ways

The utility model will be further described below in conjunction with embodiment.

Embodiment 1, as shown in Figures 1 and 2, a secondary pressurized die-casting mold for manufacturing skulls includes a movable template 1 and a fixed template 2, and the movable template 1 is on the side opposite to the fixed template 2 A movable mold core 11 is installed, and the fixed template 2 is equipped with a fixed mold core 21 matched with the movable mold core 11. The movable mold core 11 is embedded with a movable mold insert 12, and the fixed mold core 21 is embedded with a fixed mold insert. 22. The movable mold core 11, the movable mold insert 12, the fixed mold core 21 and the fixed mold insert 22 are jointly enclosed to form a head cover cavity, and the movable template 1 is equipped with an extrusion pin 3 on the side away from the fixed template 2, The extrusion pin 3 is equipped with a pressurized oil cylinder 4, and the pressurized oil cylinder 4 is connected to the extrusion pin 3 by driving. A liquid storage chamber is formed between the fixed mold insert 22 and the movable mold insert 12, and the extrusion pin 3 runs through the movable template. 1 and extend to the reservoir.

In the processing and assembly process of the utility model, the movable mold core 11 is embedded in the corresponding installation groove of the movable template 1, and the fixed mold core 21 is embedded in the corresponding installation groove of the fixed template 2, wherein the fixed mold core 21 and the movable mold core The mold core 11 can be fixed in the corresponding installation groove by means of screw connection or tight fit, and the movable mold insert 12 and the fixed mold insert 22 are respectively embedded in the corresponding mold core; the movable mold core 11, the movable mold insert 12. The fixed mold core 21 and the fixed mold insert 22 are respectively machined with molding areas corresponding to the cranium. The utility model mainly utilizes the working principle of the extrusion pin, that is, at a certain moment after the molten metal enters the cavity of the skull, the position of the upper wall thickness of the casting of the skull is pressurized by the action of an external force, and the excess metal melt The liquid is added to the skull cavity under pressure, thereby increasing the density of the wall thickness of the skull casting and improving the quality of this position. In the working process of the utility model, when the head cover cavity is filled with molten metal and undergoes pressure maintaining treatment, at this time, the liquid storage chamber is also filled with molten metal, and the pressurized oil cylinder 4 drives the extrusion pin 3 to move forward. The forward-advancing extrusion pin 3 squeezes the molten metal in the liquid storage chamber, and under the push of the extrusion pin 3, the molten metal in the liquid storage chamber is replenished into the skull cavity to fill the wall of the skull casting. Pores, depressions, etc. in thick parts due to shrinkage. Therefore, the utility model can effectively reduce the defects of pores, looseness and depressions in the wall thickness position of the formed skull casting, and the molding quality of the skull casting is high; in addition, through the effect of the extrusion pin 3, the wall thickness of the skull casting The density and quality of locations are greatly improved.

Further, the movable formwork 1 is provided with a pusher device 5 on the side away from the fixed formwork 2, the pusher device 5 includes a thimble panel 51 and a thimble bottom plate 52, and the thimble panel 51 and the thimble bottom plate 52 are clamped with a The thimble and reset rod, the pressurized oil cylinder 4 is fixed on the thimble bottom plate 52 by screws. After the extrusion pin 3 is finished working, the ejector rod of the die-casting machine pushes the pusher device 5 to demould the head cover casting, that is, the ejector rod of the die-casting machine pushes the thimble bottom plate 52, and the thimble bottom plate 52 acts on the thimble and the reset rod and finally The utility model is restored to the state before die-casting; wherein, the booster cylinder 4 is fixed to the thimble base plate 52 by screws, and the booster cylinder 4 and the extrusion pin 3 move together with the pusher device 5 during the demoulding process of the utility model.

As a preferred embodiment, the piston rod of the pressurized oil cylinder 4 is connected with a labor-saving joint 6, and a coupling 7 is arranged between the labor-saving joint 6 and the extrusion pin 3, and the labor-saving joint 6 and the extrusion pin 3 are respectively fixed. at both ends of the connector 7. The labor-saving joint 6 can be connected with the pressurized oil cylinder 4 by screwing or clipping. The main function of the labor-saving joint 6 is to facilitate the connection between the extrusion pin 3 and the piston rod of the pressurized oil cylinder 4; The piston rods of the oil pressure cylinder 4 are connected together by a coupler 7 . Through the above-mentioned connection mode, the extruding pin 3 and the pressurized oil cylinder 4 can be connected and assembled together more conveniently, thereby facilitating the installation and debugging of the utility model. In addition, the thimble panel 51 and the thimble bottom plate 52 are provided with through holes corresponding to the labor-saving joint 6 and the coupler 7 , and the labor-saving joint 6 and the coupler 7 are movably embedded in the through-holes.

Embodiment 2, the difference between the present embodiment 2 and the embodiment 1 is that the inside of the extruding pin 3 is provided with a circulating cooling water channel 8, and the circulating cooling water channel 8 includes a water inlet and an outlet, and the water inlet and the outlet respectively extend To the working end of the extruding pin 3, the extruding pin 3 is equipped with a water transport connecting pipe 9 corresponding to the water inlet and the water outlet. In the second embodiment, the water delivery connecting pipe 9 of the water inlet is connected to the water pump. Under the driving action of the water pump, the cooling water passes through the inlet of the circulating cooling water channel 8 and the water outlet in turn, and the cooling water flows in the circulating cooling water channel 8 Circulating flow and the heat transferred from the movable mold insert 12 to the extrusion pin 3 during the die-casting process are transported out through the water delivery connecting pipe 9 of the water outlet. The utility model cools down the extrusion pin 3 in the die-casting process through a circulating cooling system (including water inlet, outlet, water transfer pipe 9, water pump and cooling water, etc.), so that it can effectively avoid the extrusion pin 3 being overheated. Burning phenomenon caused by high temperature, and then ensure that the extruding pin 3 can be used continuously and normally and further enhance the use effect of the utility model.

Embodiment 3, the difference between this embodiment 3 and embodiment 1 and embodiment 2 is that: the extruding pin 3 is provided with an extruding pin sleeve, and the working end of the extruding pin 3 and the extruding pin sleeve are movable Sleeve, the extrusion pin sleeve is embedded in the movable mold insert 12 and clamped between the movable mold insert 12 and the movable template 1 . In the third embodiment, the end of the extrusion pin sleeve extends to the liquid storage chamber, and the extrusion pin 3 is movably socketed with the extrusion pin sleeve. When the pressurized cylinder 4 pushes the extrusion pin 3 forward, the extrusion The pin 3 moves along the through hole of the extrusion pin sleeve and finally penetrates the extrusion pin sleeve and enters the liquid storage chamber. The extrusion pin 3 is detachably installed in the movable mold insert 12, wherein the extrusion pin sleeve can be fixed between the movable mold insert 12 and the movable template 1 by clamping, but the above-mentioned method does not constitute a violation of the present utility model. The extrusion pin sleeve can also be fixed on the movable template 1 by screwing. In addition, during the pressurization process of the head cover casting in the pressure holding stage, the extrusion pin sleeve can effectively avoid the friction and burning of the extrusion pin 3 and the movable mold insert 12 due to excessive temperature, wherein, The extruded pin sleeve can be disassembled and replaced. When the extruded pin sleeve can no longer be used due to wear, the staff only needs to replace the spare extruded pin sleeve, which reduces the cost to a certain extent.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (5)

1. A secondary pressurized die-casting mold for manufacturing skulls, including a movable template (1) and a fixed template (2), the movable template (1) is installed on the side opposite to the fixed template (2). The movable mold core (11), the fixed mold core (2) is equipped with the fixed mold core (21) matched with the movable mold core (11), the movable mold core (11) is embedded with the movable mold insert (12), the fixed mold The core (21) is embedded with a fixed mold insert (22), and the movable mold core (11), the movable mold insert (12), the fixed mold core (21) and the fixed mold insert (22) are jointly enclosed to form a head cover The cavity is characterized in that: the movable template (1) is equipped with an extrusion pin (3) on the side away from the fixed template (2), and the extrusion pin (3) is equipped with a pressurized cylinder (4), and the pressurized cylinder (4) is driven and connected with the extrusion pin (3), a liquid storage chamber is formed between the fixed mold insert (22) and the movable mold insert (12), and the extrusion pin (3) penetrates the movable template (1) and extends to the reservoir. 2. A secondary pressurized die-casting mold for manufacturing skulls according to claim 1, characterized in that: the movable template (1) is provided with a pusher on the side away from the fixed template (2). The pusher device (5), the pusher device (5) includes a thimble panel (51) and a thimble base plate (52), and a thimble and a reset rod are clamped between the thimble panel (51) and the thimble base plate (52), the increasing The oil pressure cylinder (4) is fixed on the thimble base plate (52) by screws. 3. A secondary pressurized die-casting mold for manufacturing skulls according to claim 2, characterized in that: the piston rod of the pressurized oil cylinder (4) is connected with a labor-saving joint (6), which saves labor A coupler (7) is arranged between the joint (6) and the extruding pin (3), and the labor-saving joint (6) and the extruding pin (3) are respectively fixed at both ends of the coupler (7). 4. A secondary pressurized die-casting mold for manufacturing skulls according to claim 1, characterized in that: the inside of the extrusion pin (3) is provided with a circulating cooling water channel (8) for circulating cooling The waterway (8) includes a water inlet and a water outlet, and the water inlet and the water outlet respectively extend to the working end of the extrusion pin (3), and the extrusion pin (3) is equipped with a water transfer pipe ( 9). 5. A secondary pressurized die-casting mold for manufacturing skulls according to claim 1, characterized in that: the extrusion pin (3) is equipped with an extrusion pin sleeve, and the extrusion pin (3) ) and the extruding pin bushing can be flexibly socketed, and the extruding pin bushing is embedded in the movable mold insert (12) and clamped between the movable mold insert (12) and the movable template ( 1) Between.

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