CN213163004U - Cylinder body die casting die - Google Patents

Abstract

The utility model discloses a cylinder body die casting die, including back mould and the front mould of setting on the back mould, the upper surface of back mould is provided with and is used for making the fashioned back mould die cavity of part, and the lower surface of front mould is provided with and is used for making the fashioned front mould chamber of part, slides in the back mould die cavity and is provided with the core that a plurality of medial surface is the same with part profile shape, is provided with the drive structure who is connected with the core transmission on the back mould. The utility model has the advantages that: this scheme can make the core of different positions break away from the part of multiple orientation and die-casting shaping through the mode that the drive core removed, makes the pulling force that the part bore balance mutually to avoid the in-process of part drawing of patterns to bear the shearing force, be favorable to avoiding the part impaired at the in-process of drawing of patterns, make things convenient for part and mould to break away from.

Description

Cylinder body die casting die

Technical Field

The utility model relates to a die-casting technical field, specific cylinder body die casting die that says so.

Background

Die casting is a metal casting process and is characterized in that high pressure is applied to molten metal by utilizing an inner cavity of a die. The mold is typically machined from a stronger alloy, a process somewhat similar to injection molding. Most die cast parts are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys and their alloys. Depending on the type of die casting, either a cold chamber die casting machine or a hot chamber die casting machine may be used.

The casting equipment and molds are expensive to manufacture, and therefore the die casting process is typically only used to mass produce a large number of products. It is relatively easy to manufacture die-cast parts, which typically require only four main steps, with a low incremental cost alone. Die casting is particularly suitable for manufacturing a large number of small and medium-sized castings, so die casting is the most widely used one of various casting processes. Compared with other casting technologies, the die-cast surface is smoother and has higher size consistency.

The die-casting die under the prior art has the problem of difficult demoulding, and parts are easily damaged by pulling the core and the parts mutually in the demoulding process.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model aims to provide a cylinder body die casting die makes the part of casting break away from with the core more easily.

The utility model discloses a following technical scheme realizes: the utility model provides a cylinder body die casting die, includes back mould and the front mould of setting on the back mould, and the upper surface of back mould is provided with the back mould die cavity that is used for making the part fashioned, and the lower surface of front mould is provided with the preceding model cavity that is used for making the part fashioned, slides in the back mould die cavity and is provided with the core that a plurality of medial surface and part profile are the same, is provided with the drive structure who is connected with the core transmission on the back mould.

Further, for better realization the utility model discloses, the upper surface of back mould be provided with the guide way of back mould die cavity intercommunication, the core slides and sets up in the guide way.

Further, for better realization the utility model discloses, drive structure transmission be connected with the drive block, core and drive block can dismantle and be connected.

Further, for better realization the utility model discloses, drive structure adopt one of cylinder, hydro-cylinder, electric cylinder, linear electric motor.

Further, for better realization the utility model discloses, the core include A core, B core, C core, D core, A core, B core, C core, D core are the cross and distribute.

Further, for better realization the utility model discloses, preceding model intracavity be provided with and be located the ascending stopper of core moving direction, be provided with the spacing groove of installing with stopper cooperation on the core.

Further, for better realization the utility model discloses, the lateral surface of back mould flush with the lateral surface of front mould, be provided with the connecting plate between back mould and the front mould, the connecting plate can be dismantled respectively with back mould, front mould and be connected.

Further, for better realization the utility model discloses, the lower surface of front mould be provided with a plurality of guide block, the upper surface of back mould be provided with the guide way of a plurality of and guide block cooperation installation.

The beneficial effect that this scheme obtained is:

this scheme can make the core of different positions break away from the part of multiple orientation and die-casting shaping through the mode that the drive core removed, makes the pulling force that the part bore balance mutually to avoid the in-process of part drawing of patterns to bear the shearing force, be favorable to avoiding the part impaired at the in-process of drawing of patterns, make things convenient for part and mould to break away from.

Drawings

FIG. 1 is a top view of a rear mold;

FIG. 2 is a schematic view of the construction of the mandrel;

FIG. 3 is a perspective view of the rear mold;

FIG. 4 is a bottom view of the front mold;

FIG. 5 is a perspective view of the front mold;

FIG. 6 is a schematic view of the mating installation of the front mold and the rear mold;

the mold comprises a rear mold 11, a rear mold 12, a mold A13, a mold B14, a mold C15, a mold D16, a driving structure 17, a guide rail 18, a guide groove 19, a mold closing connecting block 110, a limiting groove 111, a driving block 112, a front mold 21, a limiting block 22, a front mold cavity 23 and a guide block 24.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Example 1:

as shown in fig. 1 and 3, in this embodiment, a cylinder die-casting mold includes a rear mold 11 and a front mold 21 disposed on the rear mold 11, a rear mold cavity 16 for forming a part is disposed on an upper surface of the rear mold 11, a front mold cavity 23 for forming the part is disposed on a lower surface of the front mold 21, a plurality of cores having inner sides having the same profile as the part are slidably disposed in the rear mold cavity 16, and a driving structure 17 in transmission connection with the cores is disposed on the rear mold 11.

When die casting is required, as shown in fig. 2, before die casting, the driving structure 17 is used to drive the cores to move inward until the cores contact with each other, the cores surround to form a lower die casting space, as shown in fig. 6, the rear die 11 and the front die 21 are closed, the front die cavity 23 and the lower die casting space are combined to form a cavity, and by injecting metal liquid into the cavity, after the metal liquid is solidified, the part is formed. To facilitate part molding and to facilitate demolding, the front mold cavity 23 is used primarily to mold the upper surface of the part, with most of the structure of the part being molded with a core. Because the contact area of the part and the front mould cavity 23 is small, the front mould 21 is easier to separate from the part, and the upper surface of the part can be prevented from being damaged. Channels can be provided in the rear mould 11 and/or the front mould 21 to allow the passage of the metal liquid into the mould cavity.

After the front mold 21 is separated, the driving structure 17 is utilized to drive the mold core to move outwards, so that the tensile force borne by the part is balanced, the part is prevented from bearing shearing force or torsion, the part is prevented from being damaged in the demolding process, and the part is also convenient to take down.

Example 2:

in addition to the above embodiments, in the present embodiment, the upper surface of the rear mold 11 is provided with a guide groove communicating with the rear mold cavity 16, and the core is slidably disposed in the guide groove.

The guide groove can be used for guiding and limiting the mold core, so that the moving precision of the mold core is improved, the shape precision of a cavity after mold closing meeting the design requirement is ensured, and the die-casting precision and the quality of a part after molding are ensured.

The guide groove is internally provided with a guide rail 18 which is in sliding connection with the mold core, and the mold core is provided with a through hole which is matched and arranged with the guide rail 18. The guide rail can improve the moving precision of the mold core, and limit the movement of the mold core in the vertical direction, thereby being beneficial to improving the stability and the position precision of the mold core.

The bulges at the two sides of the guide groove form a die closing connecting block 110, after the front die 21 and the rear die 11 are closed, the excessive space left after the rear die cavity 16 and the front die cavity 23 are closed is filled by the die closing connecting block 110, so that the connection strength and stability of the front die 21 and the rear die 11 are improved, the die closing connecting block 110 is hermetically connected with the front die cavity 23, and the metal liquid leakage is avoided.

In this embodiment, the driving structure 17 is connected with a driving block 112 in a transmission manner, and the core is detachably connected with the driving block 112. The core and the driving block 112 can be detachably connected, and the corresponding core can be replaced according to the type and the size of the die-casting part, so that the application range of the scheme is improved, and the production cost is reduced.

In this embodiment, the driving structure 17 is one of an air cylinder, an oil cylinder, an electric cylinder, and a linear motor. Therefore, the driving force in the linear direction can be output to drive the mold core to reciprocate.

In the embodiment, the cores comprise an A core 12, a B core 13, a C core 14 and a D core 15, and the A core 12, the B core 13, the C core 14 and the D core 15 are distributed in a cross shape. Make the core be cross distribution, be convenient for after the compound die, make the interact power between core and the core balanced each other to guarantee core and core around forming the core can remain stable around the die cavity that forms the volume, avoid the quality of die-casting to receive the influence.

Example 3:

as shown in fig. 2, 4 and 5, in the present embodiment, on the basis of the above embodiments, a limiting block 22 located in the moving direction of the core is disposed in the front mold cavity, and a limiting groove 111 installed in cooperation with the limiting block 22 is disposed on the core.

The limiting block 22 can limit the moving distance of the mold core, so that the position precision of the mold core is improved, the molding precision of the mold cavity is guaranteed, and the die-casting quality is guaranteed.

Make stopper 22 and spacing groove 111 sealing connection, avoid forming the clearance between stopper 22 and the spacing groove 111 and lead to in the metal liquid gets into the clearance, avoid sticking stopper 22 after the metal liquid solidifies and sticking with spacing groove 111 and lead to the drawing of patterns difficulty, also avoid remaining unnecessary structure on the part after the die-casting.

In this embodiment, adjacent core is through recess and the lug cooperation installation that can mutually support to this makes core and core can form the structure that can form spacing, connection mutually, is favorable to improving the stability of the joint strength of core and core, thereby ensures the quality of die-casting.

Example 4:

on the basis of the above embodiments, in this embodiment, the outer side surface of the rear mold 11 is flush with the outer side surface of the front mold 21, a connecting plate is arranged between the rear mold 11 and the front mold 21, and the connecting plate is detachably connected with the rear mold 11 and the front mold 21, respectively. The connecting plate is used for connecting the rear die 11 and the front die 21, so that the connecting strength of the rear die 11 and the front die 21 can be improved, the phenomenon that the shape precision of a cavity is damaged due to the fact that the rear die 11 and the front die 21 are displaced relatively under the action of metal liquid impact is avoided, and the die-casting quality is guaranteed.

In this embodiment, the connecting plates are connected to the rear mold 11 and the front mold 21 by screws, and the connecting plates are uniformly distributed around the rear mold 11, so that the circumferential positions of the rear mold 11 can be kept stable.

As shown in fig. 1, 5 and 6, the lower surface of the front mold 21 is provided with a plurality of guide blocks 24, and the upper surface of the rear mold 11 is provided with a plurality of guide grooves 19 which are matched with the guide blocks 24. The guide block 24 and the guide groove 19 are matched for installation, so that the front die 21 and the rear die 11 can be aligned quickly, the installation precision of the front die 21 and the rear die 11 is improved, and the shape precision of a cavity is ensured.

In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (8)

1. The utility model provides a cylinder body die casting die which characterized in that: the die comprises a rear die (11) and a front die (21) arranged on the rear die (11), wherein a rear die cavity (16) used for forming a part is formed in the upper surface of the rear die (11), a front die cavity (23) used for forming the part is formed in the lower surface of the front die (21), a plurality of cores with the inner sides same with the contour of the part are arranged in the rear die cavity (16) in a sliding mode, and a driving structure (17) in transmission connection with the cores is arranged on the rear die (11).

2. The cylinder die-casting mold as claimed in claim 1, wherein: the upper surface of the rear die (11) is provided with a guide groove communicated with the rear die cavity (16), and the core is arranged in the guide groove in a sliding manner.

3. The cylinder die-casting mold as claimed in claim 2, wherein: the driving structure (17) is in transmission connection with a driving block (112), and the mold core is detachably connected with the driving block (112).

4. The cylinder die-casting mold as claimed in claim 3, wherein: the driving structure (17) adopts one of an air cylinder, an oil cylinder, an electric cylinder and a linear motor.

5. A cylinder die casting mold as claimed in any one of claims 1, 2, 3, 4, wherein: the mold core comprises an A mold core (12), a B mold core (13), a C mold core (14) and a D mold core (15), wherein the A mold core (12), the B mold core (13), the C mold core (14) and the D mold core (15) are distributed in a cross shape.

6. The cylinder die-casting mold as claimed in claim 5, wherein: the front mold cavity is internally provided with a limiting block (22) positioned in the moving direction of the mold core, and the mold core is provided with a limiting groove (111) which is matched and installed with the limiting block (22).

7. A cylinder die casting mold as claimed in any one of claims 1, 2, 3, 4, 6, wherein: the outer side surface of the rear die (11) is flush with the outer side surface of the front die (21), a connecting plate is arranged between the rear die (11) and the front die (21), and the connecting plate is detachably connected with the rear die (11) and the front die (21) respectively.

8. A cylinder die casting mold as claimed in any one of claims 1, 2, 3, 4, 6, wherein: the lower surface of the front die (21) is provided with a plurality of guide blocks (24), and the upper surface of the rear die (11) is provided with a plurality of guide grooves (19) which are matched with the guide blocks (24).

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