CN112517881A

CN112517881A - Die casting die of lightweight valve body

Info

Publication number: CN112517881A
Application number: CN202011506901.XA
Authority: CN
Inventors: 马广兴; 刘桂平; 奚道伟; 焦亚林
Original assignee: Suzhou Guangxing Mold Co Ltd
Current assignee: Suzhou Guangxing Mold Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-03-19
Also published as: WO2022126926A1

Abstract

The invention provides a die-casting die for a lightweight valve body, which comprises a movable die; and a fixed die corresponding to the movable die; the movable die comprises a movable die plate and a movable die core embedded on the movable die plate, at least two forming modules are arranged on the movable die plate along the circumferential direction of the movable die core, the insert in each forming module is spliced to form a parting surface of the die-casting die on the top surface of the insert, the fixed die is pressed on the top surface of the insert, and the surfaces of the parting surfaces between the forming modules and the fixed die formed by splicing the forming modules are simple through the surfaces of the forming modules to form the surface of a workpiece, so that the die-casting die is convenient to demold.

Description

Die casting die of lightweight valve body

Technical Field

The invention belongs to the field of die casting, and particularly relates to a die casting die for a lightweight valve body.

Background

In the die-casting field, it is well known that the die-casting molding is performed by die-casting, and in the process of using the existing die-casting mold, the inventor found that at least the following problems exist in the existing die-casting mold:

firstly, when some workpieces with complex surfaces are molded, particularly, the workpieces with irregular and wavy sides are easily damaged by using a common demolding mode, and meanwhile, the parting surface position of the mold is difficult to accurately find out in the design process due to the complex shape, so that the design is difficult to realize and the demolding problem is easy to generate.

In view of the above, it is necessary to develop a die casting mold for a lightweight valve body to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention mainly aims to provide the die-casting die for the light valve body, wherein the surface of a workpiece is formed by a plurality of forming modules, so that the parting surface between the forming modules and a fixed die is formed by splicing the forming modules, and the demoulding is convenient.

In view of the defects in the prior art, the invention provides a die-casting die for a light valve body, which reduces the number of inserts by arranging two core-pulling cores which are inclined relatively on a connecting frame of the same insert.

To achieve the above objects and other advantages in accordance with the present invention, there is provided a die casting mold for a lightweight valve body, including:

moving the mold; and

the fixed die corresponds to the movable die;

the movable die comprises a movable die plate and a movable die core embedded on the movable die plate, wherein at least two forming modules are arranged on the movable die plate along the circumferential direction of the movable die core, the insert in the forming modules is spliced to form a parting surface of the die-casting die on the top surface of the insert, and the fixed die is pressed on the top surface of the insert.

Preferably, the movable mould core is provided with a plurality of raised mould cores;

the die casting formed by the die casting die comprises a workpiece body serving as the valve body, wherein the top of the workpiece body is provided with a top opening corresponding to the mold core, so that the movable mold core forms the top end face of the valve body workpiece body.

Preferably, the fixed die comprises a fixed die plate and a fixed die core embedded in the fixed die plate, and the fixed die core is used for molding one end face of the valve body workpiece body.

Preferably, the fixed die plate is provided with a guide post, the movable die plate is sleeved on the guide post, and the moving direction of the movable die is limited by the guide post.

Preferably, the movable die and the fixed die form the shapes of the two corresponding end surfaces on the valve body workpiece body;

the forming module is used for forming the shape of the corresponding side wall on the valve body workpiece body.

Preferably, the forming module comprises a driving module for driving the insert, and one side surface of the insert is used for forming part of the shape of the side wall of the workpiece body;

the insert can be in a folding state or a scattering state under the driving action of the driving module; when the insert blocks are in a closed state, the insert blocks are spliced to form the shape of the side wall of the workpiece body.

Preferably, four forming modules are arranged in the circumferential direction of the movable mold core, and the forming modules sequentially comprise a first forming module, a second forming module, a third forming module and a fourth forming module;

the movable template is of a rectangular plate-shaped structure, and the driving modules in the first forming module, the second forming module, the third forming module and the fourth forming module are sequentially arranged on each side face of the movable template.

Preferably, the first molding die set includes: the connecting frame is provided with a first insert;

the first driving module is used for driving the connecting frame to move towards the movable mould core; and

a driver mounted on the connection frame;

a first insert corresponding to one side surface of the forming workpiece body is provided with a first channel hole and an inclined hole inclined to the first channel hole;

a first loose core which is correspondingly formed into a first channel hole is arranged on the connecting frame; a second loose core is arranged on the power output end of the driver and used for forming the inclined hole;

the first loose core and the second loose core extend out of the molding surface of the first insert.

Preferably, the upper surface of the connecting frame extends upwards to form a step-shaped connecting frame body; the protruding part is used for forming an installation block for bearing the first loose core and the driver.

Preferably, a through pouring gate is arranged on the fixed die, a flow guide block is arranged on the molding module corresponding to the pouring gate, a flow guide groove is formed in the flow guide block, the flow guide block extends into the pouring gate, and the external molten liquid flows into a cavity formed by the movable die, the fixed die and the insert along the flow guide groove in the pouring gate.

Compared with the prior art, the invention has the beneficial effects that:

according to the die-casting die for the light valve body, the surface of a workpiece is formed by the plurality of forming modules, so that the surface of a parting surface between the forming modules and the fixed die is simple, the die is conveniently removed, the die-casting forming efficiency is improved, and the die-casting die is simple in structure and convenient to use.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the structure of the present invention in a preferred embodiment;

FIG. 3 is an exploded view of the present invention in a preferred embodiment;

FIG. 4 is a schematic perspective view of a stationary mold in a preferred embodiment of the present invention;

FIG. 5 is a perspective view of the movable mold and the base of the present invention;

FIG. 6 is an enlarged partial schematic view of FIG. 5;

FIG. 7 is a schematic perspective view of a first molding module according to a preferred embodiment of the present invention;

FIG. 8 is an enlarged partial schematic view of FIG. 7;

FIG. 9 is an exploded view of a first molding module in accordance with a preferred embodiment of the present invention;

FIG. 10 is a top view of a first mold block in a preferred embodiment of the invention;

FIG. 11 is a left side view of a first mold block in a preferred embodiment of the invention;

FIG. 12 is a partial structural view of a preferred embodiment of the present invention;

FIG. 13 is a schematic perspective view of a die cast part according to a preferred embodiment of the invention;

fig. 14 is a schematic perspective view of a workpiece body according to a preferred embodiment of the invention.

Shown in the figure:

1. fixing a mold; 11. fixing a template; 111. a guide post; 12. fixing a mold core; 13. a pouring gate;

2. a first molding module;

21. a first driving module; 211. a joint;

22. a fixed mount;

23. first loose cores; 231. a first core pulling direction;

24. second loose cores; 241. a second core pulling direction; 242. a limiting groove;

25. a driver;

26. a connecting frame; 261. a fixed block; 262. a guide hole; 263. a bayonet; 264. a groove; 265. a second surface; 266. a slide rail; 267. a blocking portion;

271. a side plate; 272. a base;

28. a first insert;

3. a second molding module; 31. a second driving module; 32. a second insert;

4. a third molding module; 41. a third driving module; 42. a third insert; 43. a flow guide block;

5. a fourth molding module; 51. a fourth driving module; 52. a fourth insert;

6. moving the mold;

61. moving the template; 611. a chute;

62. a movable mould core; 621. a first core; 622. a second core; 623. a pin; 624. a jack rod hole;

63. an exhaust module;

7. a base; 71. a base plate; 72. a support plate; 73. a jacking module;

8. die casting;

81. a workpiece body; 811. an oblique hole; 812. a first passage hole; 813. a first top opening; 814. a second top opening;

82. a gate portion; 83. a front runner section; 84. a back runner portion;

9. and (4) parting surfaces.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a full and partial embodiment of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

According to the present invention, referring to fig. 1 to 3, it can be seen that a die casting mold for a lightweight valve body includes: a movable mold 6; and a fixed die 1 corresponding to the movable die 6;

the movable die 6 comprises a movable die plate 61 and a movable die core 62 embedded in the movable die plate 61, wherein at least two molding modules are arranged on the movable die plate 61 along the circumferential direction of the movable die core 62, the inserts in the molding modules are spliced to form a parting surface 9 of the die-casting die on the top surface of the inserts, and the fixed die 1 is pressed on the top surface of the inserts; the parting surface 9 at the top of the molding module is simple in shape, so that when the fixed die 1 is separated from the molding module, the holding force is small, and the demolding is facilitated.

Referring to fig. 4, the fixed die 1 includes a fixed die plate 11 and a fixed die core 12 embedded in the fixed die plate 11, and the fixed die core 12 is used for molding an end surface of the valve body workpiece body 81.

Forming two corresponding end surfaces of the workpiece body 81 through the fixed die core 12 and the movable die core 62, arranging the forming modules at the periphery of the fixed die core 12 and the movable die core 62, and splicing the fixed die core 12, the movable die core 62 and the forming modules to form a cavity required by a die casting 8 containing the workpiece body 81;

in a preferred embodiment, referring to fig. 13 and 14, the workpiece body 81 is a valve body structure, and the upper and lower end surfaces of the workpiece body 81 are provided with passages, wherein the opening provided with the passages at one end comprises a first top opening 813 and a second top opening 814; a plurality of channel holes are formed in the side wall of the workpiece body 81, the channel holes include a first channel hole 812, the axial direction of the other channel holes is parallel to or perpendicular to the axial direction of the first channel hole 812, the workpiece body 81 is further provided with an oblique hole 811, and the axial direction of the oblique hole 811 is inclined to the axial direction of the first channel hole 812;

as shown in fig. 5 and 6, a plurality of raised cores are arranged on the movable die core 62; the core comprises a first core 621 and a second core 622, the first core 621 correspondingly forms a first top opening 813, and the second core 622 is used for forming a second top opening 814;

specifically, pins 623 are respectively arranged on the peripheries of the first core 621 and the second core 622 along the first core 621 and the second core 622, mounting connection holes on the peripheries of a first top opening 813 and a second top opening 814 on the workpiece body 81 are formed through the pins 623, a plurality of ejector rod holes 624 are further arranged on the movable die core 62, ejector rods are arranged in the ejector rod holes 624, and the die casting 8 is pushed out from the movable die 6 through the ejector rods.

The forming module comprises a driving module for driving the insert, one side surface of the insert is used for forming part of the shape of the side wall of the workpiece body 81, and the shape of the side wall of the workpiece body 81 is formed by a plurality of inserts;

specifically, the insert can be in a folding state or a scattering state under the driving action of the driving module; when the inserts are in a closed state, the inserts are spliced to form the shape of the side wall of the workpiece body 81.

In a preferred embodiment, four molding modules are arranged in the circumferential direction of the movable mold core 62, and the molding modules sequentially include a first molding module 2, a second molding module 3, a third molding module 4, and a fourth molding module 5;

the movable template 11 is of a rectangular plate-shaped structure, and the driving modules in the first forming module 2, the second forming module 3, the third forming module 4 and the fourth forming module 5 are sequentially arranged on each side surface of the movable template 11; the first forming die set 2 comprises a first insert 28 and a first driving die set 21 for driving the first insert 28, and the second forming die set 3 comprises a second insert 32 and a second driving die set 31; the third forming module 4 comprises a third insert 42 and a third driving module 41; the fourth molding module 5 includes a fourth insert 52 and a fourth driving module 51, and the first insert 28, the second insert 32, the third insert 42 and the fourth insert 52 are controlled by their respective driving modules to fold inward, so that the first insert 28, the second insert 32, the third insert 42 and the fourth insert 52 are connected to each other, and a cavity in the shape of a workpiece body 81 is formed therebetween.

As shown in fig. 7 to 11, the first molding die set 2 includes: a connecting frame 26, wherein a first insert 28 is mounted on the connecting frame 26, a first core back 23 is arranged in the first molding module 2, and the first core back 23 penetrates through the first insert 28;

a driver 25 mounted on the connection frame 26; and

the second loose core 24 is connected to the power transmission end of the driver 25;

the first loose core 23 is driven by an external driving mechanism, so that the forming portion on the first loose core 23 moves along a first loose core direction 231 on an axis of the forming portion, the driver 25 drives the second loose core 24 to move along a second loose core direction 241 on the axis of the first loose core 23, and the second loose core direction 241 is inclined relative to the first loose core direction 231, so that ducts at different angles are formed by the two loose cores.

The inclination angle α of the second core pulling direction 241 and the first core pulling direction 231 is in a range of 15 ° to 45 °, when the α angle is too small, interference is easily generated between the driving component of the first core pulling 23 and the driver 25 of the second core pulling 24, and when the α angle is sufficiently small, pulling of the two core pulling can be completed by using the same driving component; when the angle α is large enough, in a preferred scheme, core-pulling mechanisms are arranged on four sides of the mold, and when the angle α is larger than 45 °, an inclination angle between the second core-pulling mechanism 24 and another adjacent core-pulling mechanism is smaller than 45 °, and at this time, the second core-pulling mechanism 24 may be arranged on another core-pulling mechanism, so as to save space.

Specifically, workpieces with complex surface shapes can be conveniently formed by splicing modular insert modules, in the forming process of a multidirectional valve body, the position of a parting surface of the workpiece is difficult to determine due to the complexity of the surface of the workpiece in the design process, namely, the demolding process is difficult to realize, and the shape of the parting surface can be greatly simplified by insert forming so as to facilitate demolding; the multidirectional valve body is provided with a plurality of communicated pore channels, a core pulling mechanism is required to be arranged for forming the pore channels, inclined pore channels exist in the pore channels, and the multidirectional valve body is formed by the second core pulling 24 in the embodiment for forming the inclined pore channels;

the first core back 23 and the second core back 24 are arranged on the connecting frame 26, the connecting frame 26 can be used for bearing a first insert 28, the first core back 23 and the second core back 24 penetrate through the first insert 28, a forming surface is arranged on the first insert 28, the forming surface is processed into part of the appearance of a workpiece, and the first core back 23 and the second core back 24 extend out of the forming surface on the first insert 28; the first loose core 23 and the second loose core 24 are arranged on the same first insert 28, so that the number of inserts is reduced, a driving device for driving the inserts to move is reduced, the inserts can be driven by the driving device, a corresponding fixing frame needs to be configured for the driving device, a plurality of fixing frames are arranged on the outer side of the mold, when the inserts need to be added, more driving devices and fixing frames need to be configured, the space outside the mold is limited, and more driving elements are difficult to be accommodated in the peripheral space; therefore, the first core back 23 and the second core back 24 are arranged on the same connecting frame 26, so that space can be saved, meanwhile, due to the fact that the die-cast workpiece has holding force on the core back, when the core back is extracted, the core back is prone to cause the workpiece to be pulled and deformed, in order to guarantee the shape of the workpiece, the insert is required to abut against the workpiece to limit the shape change of the workpiece in the core back pulling process, if the first core back 23 and the second core back 24 are divided into two inserts, the size of each insert is reduced, the contact area with the workpiece is reduced, when core back is performed, the workpiece applies pressure on the insert forming surface, and along with the reduction of the contact area, the pressure intensity on the contact area is increased, so that the shape of a mold machined on the insert forming surface is prone to being damaged, and therefore the service life is shortened.

The first molding module 2 further includes a fixing bracket 22 and a first driving module 21 installed on the fixing bracket 22, where the first driving module 21 is configured to drive the connecting frame 26 to move along the first core pulling direction 231; the first driving module 21 is mounted on the fixed bracket 22, and the fixed bracket 22 is fixed on a base surface; the fixing bracket 22 is a fixing bracket fixed on the periphery of the mold and used as a supporting force application point of the driving device, in order to ensure the strength of the fixing bracket 22, the fixing bracket 22 is U-shaped, two ends of the fixing bracket 22 are installed on the mold body, the first driving module 21 is installed at the position of the lowest point of the fixing bracket 22, and the power output end of the first driving module 21 extends from the fixing bracket 22 to the mold to be connected to the connecting frame 26.

A limiting component is fixedly arranged opposite to the fixed bracket 22, the limiting component comprises a side plate 271 and a base 272, the side plate 271 and the base 272 form an accommodating cavity for accommodating the connecting frame 26, and the connecting frame 26 moves along the direction limited by the limiting component under the driving of the first driving module 21.

As shown in detail in fig. 6, the upper surface 265 of the connecting frame 26 is upwardly convex to form a stepped body of the connecting frame 26; the protruding portion is used for forming a mounting block for receiving the first loose core 23 and the driver 25.

Specifically, first installation department in the installation piece set up in one side border department of link 26, an installation department is used for the installation first 23 of loosing core makes the cross sectional shape of link 26 is the L type, first 23 of loosing core passes link 26 makes first 23 of loosing core is fixed link 26's corner position department, in order to increase first 23's of loosing core stability.

The mounting block further comprises a second mounting portion for receiving the driver 25, the second mounting portion extends from the first mounting portion along a second core pulling direction 241, and the driver 25 is fixedly mounted on one end of the second mounting portion, which is far away from the first mounting portion, so that the second core pulling 24 passes through the second mounting portion;

the first installation department with second installation department integral type combines to form the overall structure of installation piece, finally the second is loosed core 24 and is followed spread out in the first installation department, the second loose core 24 extend to with the first 23 same sides of loosing core on.

Specifically, a guide hole 262 penetrating through the mounting block along the second core pulling direction 241 is formed in the mounting block, the guide hole 262 is located in the second mounting portion, the second core pulling 24 is arranged in the guide hole 262, the second core pulling 24 is connected with the guide hole 262 in a matched manner, and the second core pulling 24 is driven by the driver 25 to extend out of the guide hole 262.

Furthermore, the mounting block is provided with a groove 264, and the groove 264 corresponds to the guide hole 262, so that the second loose core 24 finally extends out of the groove 264;

a sleeve is sleeved outside the second loose core 24, the position between the sleeve and the connecting frame 26 is guaranteed to be relatively static, the driver 25 drives the second loose core 24 to slide relative to the sleeve, a limiting groove 242 is formed in the outer wall of the sleeve at the position of a groove 264, a fixing block 261 is installed in the groove 264, and the fixing block 261 is inserted into the limiting groove 242 to limit the position of the sleeve; the limiting groove 242 is an inward recessed annular groove formed in the sleeve, so that the sleeve forms a step shape, the fixing block 261 includes two downward extending latch members, the latch members clamp the limiting groove 242 from two corresponding sides of the sleeve, and the fixing block 261 is fixedly connected to the connecting frame 26, so that the position of the sleeve is limited.

The side wall of the connecting frame 26 protrudes outward to form a blocking portion 267, and as shown in fig. 2, the side plate 271 on one side of the blocking portion 267 is provided with a yielding port for allowing the blocking portion 267 to slide, and the movement distance of the connecting frame 26 is limited by the yielding port.

A joint 211 is installed at the power output end of the first driving module 21, a bayonet 263 is opened at one end of the connecting frame 26 close to the first driving module 21, and the joint 211 extends into the bayonet 263, so that the first driving module 21 and the connecting frame 26 form a fixed connection structure.

The side plate 271 and the base 272 are independent from each other, the side plate 271 and the base 272 are kept relatively still, the side plate 271 and the base 272 are mounted on a substrate, specifically, the side plate 271 and the base 272 are mounted on a mold, slide rails 266 are arranged on two side edges of the connecting frame 26, a gap between the side plate 271 and the base 272 is consistent with the thickness of the slide rails 266, and thus the connecting frame 26 is limited to move in a slide track formed by the side plate 271 and the base 272; meanwhile, the bottom of the side plate 271 is provided with a slot, and when the slot is matched with the upper surface of the base 272 by the slide rail 266, the connecting frame 26 is clamped between the slot and the slide rail.

The bottom of the movable die 6 of the die is provided with a base 7, the base 7 comprises a bottom plate 71 and a support plate 72 arranged between the bottom plate 71 and the movable die plate 61, an accommodating space is formed between the bottom plate 71 and the movable die plate 61 through the support plate 72 for supporting, a jacking module 73 with a jacking rod is arranged in the accommodating space, and the movable die 6 is driven to drive the jacking module at the same time under the driving of external driving equipment so as to realize die opening.

The fixed die 1 is provided with a sprue gate 13 which penetrates up and down, a flow guide block 43 is arranged on the molding module corresponding to the sprue gate 13, a flow guide groove is formed in the flow guide block 43, the flow guide block 43 extends into the sprue gate 13, the molten liquid flowing into the outside flows into a cavity formed by the movable die 6, the fixed die 1 and the insert along the flow guide groove on the sprue gate, and the flow guide groove is a ramp which inclines downwards so that the molten liquid flows into the cavity along with the gravity.

The first forming module 2 corresponds to the third forming module 4, the first forming module 2 is arranged opposite to the third forming module 4, the guide block 43 is arranged on the third insert 42, and as the side surface of the workpiece to be formed by the first insert 28 is complicated, the guide block 43 is arranged on the corresponding third forming module 4, so that more molten liquid flows to one surface of the first insert 28, the shape of the first insert 28 is fully formed, and the quality of the die-cast workpiece is ensured;

a flow channel is further formed on the fixed mold core 12 and the movable mold core 62 and is communicated with the flow guide groove on the flow guide block 43, so that the molten liquid flows along the flow channel at a position to be formed; the die casting 8 further comprises a pouring gate part formed in the flow channel, the pouring gate part is connected with the workpiece body 81 and a gate part 82 formed between the pouring gate 13 and the flow guide block 43, specifically, the pouring gate part comprises a front pouring gate part 83 which is connected with the workpiece body 81 and the gate part 82, the movable die 6 is further provided with an exhaust module 63, the exhaust module 63 is arranged at the tail end of the flow channel on the movable die core 62, the exhaust module 63 is used for exhausting air originally in the die cavity from the exhaust module 63 in the die casting forming process, the pouring gate part further comprises a rear pouring gate part 84, and after the air is exhausted, when the molten liquid is filled in the whole die cavity, the molten liquid can also flow into the flow channel originally used for exhausting and is solidified in the flow channel.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a die casting die of lightweight valve body which characterized in that includes:

a movable die (6); and

the fixed die (1) corresponds to the movable die (6);

the die-casting die comprises a moving die (6), a moving die core (62) and at least two forming modules, wherein the moving die core (62) is embedded in the moving die plate (61), the moving die plate (61) is provided with the at least two forming modules along the circumferential direction of the moving die core (62), the inserts in the forming modules are spliced to form a parting surface (9) of the die-casting die on the top surface of the insert, and the fixed die (1) is pressed on the top surface of the insert.

2. The die casting mold as claimed in claim 1, wherein the core insert (62) is provided with a plurality of raised cores;

the die casting (8) formed by the die casting die comprises a workpiece body (81) serving as the valve body, wherein the top of the workpiece body (81) is provided with a top opening corresponding to the mold core, so that the movable mold core (62) forms the top end face of the valve body workpiece body (81).

3. The die casting mold as claimed in claim 1, wherein the fixed mold (1) comprises a fixed mold plate (11) and a fixed mold core (12) embedded in the fixed mold plate (11), the fixed mold core (12) being used for molding one end face of the valve body workpiece body (81).

4. The die casting mold as claimed in claim 3, wherein the fixed mold plate (11) is provided with guide posts (111), the movable mold plate (61) is sleeved on the guide posts (111), and the moving direction of the movable mold (6) is limited by the guide posts (111).

5. The die casting mold as claimed in any one of claims 1 to 4, wherein the movable mold (6) and the fixed mold (1) are molded in shapes of corresponding both end surfaces of the valve body workpiece body (81);

the forming module is used for forming the shape of the corresponding side wall on the valve body workpiece body (81).

6. The die casting mold as claimed in claim 5, wherein the molding module includes a driving module for driving the insert, the insert having a side surface for molding a partial shape of a side wall of the workpiece body (81);

the insert can be in a folding state or a scattering state under the driving action of the driving module; when the inserts are in a closed state, the inserts are spliced to form the shape of the side wall of the workpiece body (81).

7. The die-casting die as claimed in any one of claims 1 to 4, wherein four forming modules are arranged on the periphery of the movable die core (62), and the forming modules comprise a first forming module (2), a second forming module (3), a third forming module (4) and a fourth forming module (5) in sequence;

the movable template (11) is of a rectangular plate-shaped structure, and driving modules in the first forming module (2), the second forming module (3), the third forming module (4) and the fourth forming module (5) are sequentially arranged on each side face of the movable template (11).

8. A die-casting mould as claimed in claim 7, characterized in that said first forming die set (2) comprises: a connecting frame (26) on which a first insert (28) is mounted;

the first driving module (21) is used for driving the connecting frame (26) to move towards the direction of the movable mould core (62); and

a driver (25) mounted on the connecting frame (26);

a first channel hole (812) and an inclined hole (811) inclined to the first channel hole (812) are formed in one side surface, corresponding to the forming workpiece body (81), of the first insert (28);

a first loose core (23) which correspondingly forms a first channel hole (812) is arranged on the connecting frame (26); a second loose core (24) is mounted on the power output end of the driver (25), and the second loose core (24) is used for forming an inclined hole (811);

the first core back (23) and the second core back (24) extend out of the molding surface of the first insert (28).

9. The die casting mold as claimed in claim 8, wherein an upper surface (265) of the connecting frame (26) is upwardly extended and protruded to form the connecting frame (26) body in a stepped shape; the protruding part is used for forming a mounting block for bearing the first loose core (23) and the driver (25).

10. The die-casting die as claimed in any one of claims 1 to 4, wherein the fixed die (1) is provided with a sprue gate (13) penetrating through the upper and lower parts, the molding module corresponding to the sprue gate (13) is provided with a flow guide block (43), a flow guide groove is formed in the flow guide block (43), the flow guide block (43) extends into the sprue gate (13), and the externally flowing molten liquid flows into a cavity formed by the movable die (6), the fixed die (1) and the insert along the flow guide groove in the sprue gate.