CN213496406U

CN213496406U - Aluminum die-casting die

Info

Publication number: CN213496406U
Application number: CN202022345088.4U
Authority: CN
Inventors: 曹思前; 罗俊; 朱少辉; 杨迎春; 马荣涛
Original assignee: Ikd Co ltd
Current assignee: Ikd Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-22
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses an aluminum die-casting die, including movable mould subassembly, cover half subassembly, extrusion cylinder and an at least die core round pin, the movable mould subassembly includes movable mould frame and movable mould core, the cover half subassembly includes cover half frame and cover half core, movable mould core folds with the cover half core and forms the pouring die cavity, the die core round pin is worn to establish in the pouring die cavity, the extrusion cylinder can be dismantled and assembled on the cover half subassembly and be located the cover half core outside, the A end top of die core round pin is on the inner wall of movable mould core, the B end top of die core round pin is at the cylinder body inner surface of extrusion cylinder; after the extrusion oil cylinder is disassembled from the fixed die assembly, the core pin can be drawn out from the fixed die frame; therefore, when the core pin is replaced, the worker only needs to disassemble the extrusion oil cylinder from the fixed die assembly to extract the core pin, so that the process of disassembling and assembling the core pin is simplified, and the combination efficiency of the aluminum die-casting die is improved.

Description

Aluminum die-casting die

Technical Field

The utility model belongs to the technical field of an aluminium die casting die, a aluminium die casting die with extrusion cylinder is related to.

Background

In the aluminum die-casting production process, in order to improve the internal quality of the casting and reduce the casting defects, the liquid die-casting material is usually extruded, so that the internal structure of the casting is more compact. Therefore, the extrusion oil cylinder is required to push the extrusion core to extend into the liquid die-casting material for extrusion.

Because the aluminum die-casting operation is a high-temperature operation, the aluminum die-casting operation is arranged in the extrusion oil cylinder, the heat dissipation effect is poor in the die-casting die, the aluminum die-casting operation is easy to be blocked due to thermal expansion, the action of the oil cylinder fails, the effect of local extrusion cannot be realized, the produced product cannot meet the internal quality requirement, the die needs to be disassembled for correction, and the production efficiency is greatly influenced while the product quality is influenced.

Patent document No. CN 204194756U discloses an extrusion cylinder structure in a die casting mold, which realizes cooling of an extrusion cylinder by changing the structure of a cylinder piston rod and introducing cooling water among a cylinder piston rod, a connector and an extrusion pin.

An aluminum die-casting die is used for casting and molding an aluminum die-casting piece with a through hole, and a core pin is required to be preset in the die; the core pin is worn out by repeated use and therefore needs to be replaced frequently; the existing die is limited in structure, the operation procedure of replacing the core pin is relatively complex, and the die-casting efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an aluminium die casting die convenient to change core round pin is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the aluminum die-casting die comprises a movable die component, a fixed die component, an extrusion oil cylinder and at least one core pin, wherein the movable die component comprises a movable die frame and a movable die core, the fixed die component comprises a fixed die frame and a fixed die core, the movable die core and the fixed die core are folded to form a casting die cavity, the core pin is arranged in the casting die cavity in a penetrating mode, the extrusion oil cylinder is detachably assembled on the fixed die component and is positioned on the outer side of the fixed die core, the A end of the core pin is propped against the inner wall of the movable die core, and the B end of the core pin is propped against the inner surface of the cylinder body of the extrusion oil cylinder; after the extrusion oil cylinder is disassembled, the core pin can be drawn out from the fixed die frame.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the core pin penetrates through the fixed die core, the end A of the core pin penetrates through the inner wall of the fixed die core forwards and is pressed against the inner wall of the movable die core, and the end B of the core pin penetrates through the outer wall of the fixed die core backwards and is pressed against the inner surface of the oil cylinder.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the movable mold core is fixed on the inner side of the movable mold frame, and the fixed mold core is fixed on the inner side of the fixed mold frame.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the extrusion oil cylinder comprises the cylinder body and an extrusion component.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the cover die frame be equipped with the recess that holds the cylinder body, be equipped with the through-hole on the cover die core of recess bottom, the cross-section of recess be greater than the cross-section of through-hole, the cylinder body fix the recess in, the extrusion part pass the through-hole.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the cylinder body is fixed on the outer surface of the fixed mold core at the bottom of the groove through screws.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: and a pouring component with a pouring gate is arranged on the fixed die assembly.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the number of the core pins is two.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: the extrusion oil cylinder comprises a water pipe for cooling the extrusion oil cylinder, and the fixed die frame is provided with a strip-shaped groove for accommodating the water pipe.

The utility model provides a further optimized technical scheme that above-mentioned technical problem adopted does: a hanging ring is arranged on the side wall of the fixed mould frame.

Compared with the prior art, the utility model has the advantages that one end of the core pin is propped against the inner wall of the movable mold core, and the other end of the core pin is propped against the inner surface of the cylinder body of the extrusion oil cylinder; after the extrusion oil cylinder is disassembled from the fixed die assembly, the core pin can be drawn out from the fixed die frame. Therefore, when the core pin is replaced, the worker only needs to disassemble the extrusion oil cylinder from the fixed die assembly to extract the core pin, so that the process of disassembling and assembling the core pin is simplified, and the combination efficiency of the aluminum die-casting die is improved.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a first schematic view of an aluminum die casting mold according to a preferred embodiment of the present invention;

fig. 2 is a schematic view two of an aluminum die casting mold according to a preferred embodiment of the present invention;

fig. 3 is a third schematic view of an aluminum die casting mold according to a preferred embodiment of the present invention;

fig. 4 is an exploded view of an aluminum die casting mold according to a preferred embodiment of the present invention;

fig. 5 is an exploded view of an aluminum die casting mold according to a preferred embodiment of the present invention;

fig. 6 is an exploded view of an aluminum die casting mold according to a preferred embodiment of the present invention;

fig. 7 is a first schematic diagram of a squeeze cylinder according to a preferred embodiment of the present invention;

fig. 8 is a second schematic view of the squeeze cylinder according to a preferred embodiment of the present invention;

fig. 9 is a third schematic view of a squeeze cylinder according to a preferred embodiment of the present invention;

fig. 10 is a schematic cross-sectional view taken along line a-a of fig. 9 in accordance with a preferred embodiment of the present invention;

fig. 11 is an exploded view of a squeeze cylinder according to a preferred embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the aluminum die casting mold includes a movable mold assembly 100 and a stationary mold assembly 200.

As shown in fig. 4 to 6, the movable mold assembly 100 includes a movable mold frame 01 and a movable mold core 02; the fixed die assembly 200 comprises a fixed die frame 03 and a fixed die core 04, the movable die core 02 is arranged on the inner side of the movable die frame 01 through a guide structure, the fixed die core 04 is fixed on the inner side of the fixed die frame 03 through screws, and the movable die core 02 and the fixed die core 04 are folded to form a certain gap to form a pouring die cavity.

And, the aluminum die casting mold further comprises a core pin 05, the core pin 05 is inserted into the casting mold cavity, so that a cut-off region is formed in the casting mold cavity to form a hole-like structure on the aluminum die casting.

In addition, the stationary mold assembly 200 is provided with a pouring member 06 having a pouring gate. The casting part 06 passes from the fixed mold frame 03 through the fixed mold core 04 into the casting mold cavity. In the actual production process, after die assembly, a feeding system injects high-temperature aluminum liquid into a pouring die cavity from a pouring port of a pouring part 06, and then cooling and pressure maintaining are carried out to form an aluminum die casting.

As shown in fig. 1 to 6, in the present embodiment, in order to improve the intrinsic quality of the casting and reduce casting defects, an extrusion cylinder 300 is further provided in the aluminum die casting mold.

As shown in fig. 1 to 6 in conjunction with fig. 7, the squeeze cylinder 300 includes a cylinder body 301 and a squeeze member 302. The cylinder body 301 is fixed on the fixed die assembly 200, and the extrusion oil cylinder 300 is used for pushing the extrusion component 302 to extend into the liquid die-casting material for extrusion, so that the internal structure of the casting is more compact.

In the conventional aluminum die-casting mold technology, the extrusion cylinder 300 is usually mounted on the fixed mold frame 03 through a huge mounting plate, one end of the core pin 05 abuts against the inner wall of the movable mold core 02, and the other end of the core pin passes through the fixed mold core 04 and then is fixed with the fixed mold frame 03. Therefore, when the core pin 05 is disassembled, a worker needs to disassemble the extrusion oil cylinder 300 firstly, the whole movable die frame 01 is disassembled to disassemble the core pin 05, otherwise, the steps are repeated, and the core pin 05 is complex and tedious in disassembling and assembling process and consumes manpower and material resources. And because the aluminum die casting operation is a high-temperature operation, the core pin 05 is completely soaked in the high-temperature liquid; and friction occurs between the core pin 05 and the formed aluminum die casting during the demolding process, so that the core pin 05 is easily worn and needs to be frequently replaced. The complicated disassembly and assembly operation can greatly reduce the efficiency of aluminum die casting.

In this embodiment, as shown in fig. 1 to 6, the fixed mold frame 03 is provided with a groove 001 for accommodating the cylinder 301, the fixed mold core 04 is provided with a through hole T through which the pressing member 302 passes, the cross section of the groove 001 is larger than that of the through hole T, and the cylinder 301 is fixed in the groove 001.

The end A of the core pin 05 props against the inner wall of the movable mold core 02, and the end B of the core pin 05 props against the inner surface of the cylinder body 301 of the extrusion oil cylinder 300; after the extrusion cylinder 300 is detached from the fixed mold frame 03, the core pin 05 can be withdrawn from the fixed mold frame 03. Therefore, when the core pin 05 is replaced, the worker can extract the core pin 05 only by detaching the extrusion oil cylinder 300 from the fixed die assembly, so that the process of disassembling and assembling the core pin 05 is simplified, and the assembly efficiency of the aluminum die-casting die is improved.

Specifically, the core pin 05 penetrates through the fixed mold core 04, the end a of the core pin 05 penetrates forward through the inner wall of the fixed mold core 04 and abuts against the inner wall of the movable mold core 02, the fixed mold core 04 is provided with a through hole Q for the core pin 05 to penetrate through, and the end B of the core pin 05 penetrates backward through the through hole Q to the outer wall of the fixed mold core 04 and abuts against the inner surface of the cylinder body 301. The number of the core pins 05 is two in this embodiment.

The cylinder body 301 is fixed on the outer surface of the fixed mold core 04 at the bottom of the groove 001 by screws, and further preferably, 4 sets of screws are fixed at four corners of the cylinder body 301, so that the working stability of the extrusion cylinder 300 is ensured, and the assembly and disassembly of the extrusion cylinder 300 are facilitated as much as possible.

More preferably, when the squeeze cylinder 300 is assembled in place, the rear surface of the cylinder body 301 is flush with the rear surface of the mold chase 03, or the rear surface of the cylinder body 301 is located in the rear surface of the mold chase 03, thereby preventing the squeeze cylinder from interfering with the installation of the aluminum die-casting mold onto the die-casting apparatus.

As shown in fig. 7 to 11, as one specific example of the squeeze cylinder 300, a cylinder joint X is provided at a circumferential side portion of a cylinder body 301. A piston part 07 is arranged in a cylinder body 301 of the extrusion oil cylinder 300, an extrusion component 302 comprises an extrusion pin 08 and an extrusion sleeve 09 which are coaxially connected to the front end of the piston part 07, the extrusion sleeve 09 is sleeved outside the extrusion pin 08, the rear end of the extrusion sleeve 09 is fixedly connected to the front end of the cylinder body 301, and the extrusion pin 08 can extend out of the front end of the extrusion sleeve 09.

With reference to fig. 4-6, the extrusion sleeve 09 passes through the fixed mold core 04 from the bottom of the groove 001 at the through hole T on the fixed mold core 04 to enter the inner surface of the fixed mold core 04, and together with the fixed mold core 04 and the movable mold core 02, forms a casting mold cavity. And the extrusion pin 08 can extend or retract into the extrusion sleeve 09 under the action of the piston part 07, so that the liquid in the casting die cavity is extruded and released.

As shown in fig. 10, the pressing sleeve 09 preferably includes a front guide segment 091 and a rear heat dissipating segment 092. The inner diameter of the heat dissipating section 092 is 1.5 to 3 times the inner diameter of the guide section 091. The guide section 091 is in clearance fit with the extrusion pin 08 to realize a guide effect, reduce the vibration of the fore-and-aft movement of the extrusion pin 08 and improve the stability of the extrusion operation. A cavity K with heat insulation and radiation functions is formed between the heat radiation section 092 and the pressing pin 08. The cavity ensures that the fixed mold core 04 is not directly contacted with the extrusion pin 08, thereby reducing the heat transfer efficiency between the fixed mold core 04 and the extrusion pin 08 and avoiding the extrusion pin 08 from being subjected to heat transfer by the fixed mold core 04; and the heat of the pressing pin 08 can be conducted to this cavity K to reduce its own heat.

As a preferred embodiment, as shown in fig. 7-11, in this embodiment, the cylinder 301 is provided with a first cooling pipeline capable of cooling the cylinder 301, and the first cooling pipeline includes a cooling channel inside the cylinder 301, a first water inlet 11 and a first water outlet 12; the cooling water enters the interior of the cylinder 301 through the first water inlet 11, flows through the cooling channel, and then flows out through the first water inlet 11.

A second cooling pipeline capable of cooling the piston part 07 and the extrusion pin 08 simultaneously is arranged between the piston part 07 and the extrusion pin 08, and comprises a cooling cavity 15 communicated with the piston part 07 and the extrusion pin 08, a second water inlet 13 and a second water outlet 14; the cooling water enters the cooling cavity 15 from the second water inlet 13 and then flows out from the second water outlet 14 to take away heat.

Through the two sets of cooling systems, the piston part 07 in the cylinder body 301 is indirectly cooled through cooling the cylinder body 301, and the phenomenon that the piston part 07 and the cylinder body 301 are expanded and failed after the extrusion oil cylinder 300 works is avoided; moreover, the piston part 07 and the extrusion pin 08 are directly cooled, and the extrusion pin 08 is prevented from thermal expansion. The cooling effect is better, and the probability of the extrusion oil cylinder 300 being stuck is greatly reduced, so that the stability of the aluminum die-casting die is improved, and the service life of the aluminum die-casting die is prolonged.

The second water inlet 13 and the second water outlet 14 are provided at a rear end portion of the piston portion 07, and the cooling chamber 15 extends from the rear end portion of the piston portion 07 to a front end portion of the squeeze pin 08. The cooling water enters the cooling chamber 15 from the second water inlet 13 and spreads to the front section of the extruding pin 08 to achieve cooling of the entire length of the extruding pin 08, particularly, the head section of the extruding pin 08.

The squeeze cylinder 300 further includes a water guide pipe 16 in the cooling chamber 15, and the water guide pipe 16 is connected to the second water inlet 13 and extends inward to the front end of the cooling chamber 15 to guide the cooling water to the front end of the squeeze pin 08, so that the cooling water with the lowest temperature is more effectively delivered to the front end of the squeeze pin 08 with the highest temperature, the heat at the front end of the squeeze pin 08 is more effectively taken away, and the temperature of the squeeze pin 08 is efficiently lowered.

It should be understood that after the cooling water is discharged from the foremost end of the water conduit 16 to the cooling chamber 15, the cooling water is diffused along the inner wall of the cooling chamber 15 at the front end of the extruding pin 08, and is forced to the gap between the water conduit 16 and the inner wall of the extruding pin 08, and finally flows out from the second water outlet 14 communicating with the gap, so that the heat exchange between the cooling water and the aluminum die casting mold is realized.

Preferably, the piston part 07 is in threaded connection with the pressing pin 08, and a sealing member is arranged between the piston part 07 and the pressing pin 08 to realize radial sealing.

More preferably, the piston part 07 comprises a piston rod 071 moving in the cylinder 301 and a coupling head 072 at the rear end of the piston rod 071, the coupling head 072 is located outside the cylinder 301, and the second water inlet 13 and the second water outlet 14 are arranged on the coupling head 072.

In order to make the structure compact and make the squeeze cylinder 300 easier to be assembled to the aluminum die casting mold, the rear side of the cylinder body 301 is provided with a mounting groove M for receiving the coupling head 072.

The mounting groove M extends to the upper surface of the cylinder 301, the second water inlet 13 and the second water outlet 14 are disposed on the upper surface of the coupling 072, and a water pipe (not shown) connecting the second water inlet 13 and the second water outlet 14 is led out from a notch of the mounting groove M on the upper surface of the cylinder 301.

Further preferably, the first water inlet 11 and the first water outlet 12 are disposed on the side surface of the cylinder 301, and the water pipes F1, F2 connecting the first water inlet 11 and the first water outlet 12 extend outwards from both sides of the cylinder 301, respectively, so that the water pipes F1, F2 at the first water inlet 11 and the first water outlet 12 and the water pipes (not shown in the figures) at the second water inlet 13 and the second water outlet 14 are in two directions perpendicular to each other, thereby avoiding mutual interference and heat transfer between the water pipes and making the structural layout of the aluminum die-casting mold more reasonable.

As shown in fig. 2 and 3, further, a strip-shaped groove L penetrating from the groove 001 to the edges of the two sides of the fixed mold frame 03 is further formed in the fixed mold frame 03 on the two sides of the groove 001 for installing the extrusion cylinder 300, and water pipes F1 and F2 connecting the first water inlet 11 and the first water outlet 12 and water pipes at the second water inlet 13 and the second water outlet 14 can be accommodated in the strip-shaped groove L, so that the aluminum die-casting mold is more compact and tidy.

As shown in fig. 1-2, in addition, in order to facilitate the hoisting of the aluminum die-casting mold, a hanging ring 400 is further disposed on the sidewall of the fixed mold frame for connecting with a hoisting device to implement mechanical operation. It is right above the utility model provides an aluminium die casting die has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and embodiment have been expounded, and the explanation of above embodiment is only used for helping to understand the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The aluminum die-casting die is characterized by comprising a movable die assembly, a fixed die assembly, an extrusion oil cylinder and at least one core pin, wherein the movable die assembly comprises a movable die frame and a movable die core, the fixed die assembly comprises a fixed die frame and a fixed die core, the movable die core and the fixed die core are folded to form a casting die cavity, the core pin is arranged in the casting die cavity in a penetrating manner, the extrusion oil cylinder is detachably assembled on the fixed die assembly and is positioned on the outer side of the fixed die core, the A end of the core pin is propped against the inner wall of the movable die core, and the B end of the core pin is propped against the inner surface of the cylinder body of the extrusion oil cylinder; after the extrusion oil cylinder is disassembled, the core pin can be drawn out from the fixed die frame.

2. The aluminum die casting mold as recited in claim 1, wherein the core pin passes through the stationary mold core, an a end of the core pin passes forward through an inner wall of the stationary mold core to abut against an inner wall of the movable mold core, and a B end of the core pin passes backward through an outer wall of the stationary mold core to abut against an inner surface of the cylinder.

3. The aluminum die casting mold as recited in claim 1, wherein the movable mold core is fixed to an inner side of the movable mold frame, and the stationary mold core is fixed to an inner side of the stationary mold frame.

4. The aluminum die casting mold as recited in claim 1, wherein the squeeze cylinder includes the cylinder body and the squeeze member.

5. An aluminum die casting mold as recited in claim 4, wherein the stationary mold frame is provided with a groove for receiving the cylinder body, the stationary mold core at the bottom of the groove is provided with a through hole, the cross section of the groove is larger than that of the through hole, the cylinder body is fixed in the groove, and the pressing member passes through the through hole.

6. An aluminum die casting mold as claimed in claim 5, wherein the cylinder is fixed to the outer surface of the stationary mold core at the bottom of the groove by means of screws.

7. An aluminum die casting mold as recited in claim 1, wherein the fixed die assembly is provided with a casting member having a gate.

8. An aluminum die casting mold as recited in claim 1, wherein the number of the core pins is two.

9. The aluminum die-casting die as claimed in claim 5, wherein the extrusion cylinder comprises a water pipe for cooling the extrusion cylinder, and the fixed die frame is provided with a strip-shaped groove for accommodating the water pipe.

10. An aluminum die casting mold as recited in claim 5, wherein a hanging ring is provided on a side wall of the fixed mold frame.