WO2022126926A1

WO2022126926A1 - Die-casting die for lightweight valve body

Info

Publication number: WO2022126926A1
Application number: PCT/CN2021/084014
Authority: WO
Inventors: 马广兴; 刘桂平; 奚道伟; 焦亚林
Original assignee: 苏州广型模具有限公司
Priority date: 2020-12-18
Filing date: 2021-03-30
Publication date: 2022-06-23
Also published as: CN112517881A

Abstract

A die-casting die for a lightweight valve body, comprising a moving die (6); and a fixed die (1) corresponding to the moving die. The moving die comprises a moving die plate (61) and a moving die core (62) embedded on the moving die plate, wherein no less than two molding modules are circumferentially arranged on the moving die plate along the moving die core, inserts in the molding modules are spliced so as to form a parting surface (9) of the die-casting die on the top surface of the inserts, and the fixed die is pressed on the top surface of the inserts. The surface of a workpiece is molded by means of a plurality of molding modules, so that the surface of the parting surface formed between the molding modules and the fixed die by means of splicing is easy to demold.

Description

Die-casting mold for lightweight valve body

technical field

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

Background technique

In the field of die casting, molding by die casting is well known. In the process of using the existing die casting mold, the inventor found that the existing die casting mold has at least the following problems:

First of all, when molding some workpieces with complex surfaces, especially those with irregular undulating shapes on the sides, it is easy to damage the workpieces by using the general demolding method. At the same time, due to its complex shape, it is difficult to accurately find the mold during the design process. The position of the parting surface is different, so there is a great difficulty in the design at the beginning, and it is easy to cause problems in demolding.

In view of this, it is necessary to develop a light-weight valve body die-casting mold to solve the above problems.

SUMMARY OF THE INVENTION

Aiming at the deficiencies in the prior art, the main purpose of the present invention is to provide a die-casting mold for a lightweight valve body. The surface of the workpiece is formed by a plurality of forming modules, so that the separation between the forming module and the fixed mold is formed by splicing. The profile surface is simple for easy demoulding.

In view of the deficiencies of the prior art, another object of the present invention is to provide a die-casting mold for a lightweight valve body, which reduces the number of inserts by arranging two relatively inclined core pulling on the connecting frame of the same insert.

In order to achieve the above object and other advantages according to the present invention, a die-casting mold for a lightweight valve body is provided, comprising:

moving mold; and

a fixed mold corresponding to the movable mold;

Wherein, the movable die includes a movable die plate and a movable die core embedded on the movable die plate, and no less than two forming modules are arranged on the movable die plate along the circumferential direction of the movable die core, and the forming modules The inner insert is spliced so that the parting surface of the die-casting mold is formed on the top surface of the insert, and the fixed die is press-fitted on the top surface of the insert.

Preferably, a plurality of raised cores are provided on the movable mold core;

The die-casting part formed by the die-casting mold includes a workpiece body as the valve body, and the top of the workpiece body is provided with a top opening corresponding to the core, so that the movable mold core can form the valve The top end face of the workpiece body.

Preferably, the fixed mold includes a fixed platen and a fixed mold core embedded in the fixed platen, and the fixed mold core is used to form one end face of the valve body workpiece body.

Preferably, a guide post is installed on the fixed platen, and the movable platen is sleeved on the guide post, and the moving direction of the movable die is restricted by the guide post.

Preferably, the movable mold and the fixed mold form the shape of the corresponding two end faces 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 includes a driving module for driving the insert, and one side of the insert is used to form part of the shape of the side wall of the workpiece body;

Under the driving action of the driving module, the inserts can be in a closed state or a dispersing state; wherein, when the inserts are in a closed state, the inserts are spliced to form the side of the workpiece body shape of the wall.

Preferably, four forming modules are arranged on the circumference of the movable mold core, and the forming modules sequentially include a first forming module, a second forming module, a third forming module and a fourth forming die Group;

The movable template is in the shape of a rectangular plate, and the driving modules in the first molding module, the second molding module, the third molding module and the fourth molding module are sequentially arranged on each side of the movable template superior.

Preferably, the first forming module comprises: a connecting frame on which a first insert is mounted;

a first driving module, which is used for driving the connecting frame to move in the direction of the movable mold core; and

a driver mounted on the connecting frame;

Wherein, a first channel hole and an oblique hole inclined to the first channel hole are provided on a side surface of the first insert corresponding to the forming workpiece body;

A first core-pull corresponding to the first channel hole is installed on the connecting frame; a second core-pull is installed on the power output end of the driver, and the second core-pull is used for forming an oblique hole;

The first core-pulling and the second core-pulling protrude from the molding surface of the first insert.

Preferably, the upper surface of the connection frame extends upward to form a stepped connection frame body; wherein, the raised portion is used to form a mounting block for receiving the first core pull and the driver.

Preferably, the fixed mold is provided with a pouring port running through the upper and lower sides, and the molding module corresponding to the pouring port is provided with a diversion block, and the diversion block is provided with a diversion groove. Extending into the sprue, the molten liquid flowing in from the outside flows into the cavity formed by the movable mold, the fixed mold and the insert along the guide groove on the sprue.

Compared with the prior art, the beneficial effects of the present invention are:

The present invention provides a light-weight valve body die-casting mold. The surface of the workpiece is formed by a plurality of molding modules, so that the surface of the parting surface formed by the splicing of the molding modules and the fixed mold is simple, so as to facilitate demoulding and improve the die-casting molding efficiency. The invention has simple structure and convenient use.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following detailed description is given with the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the three-dimensional structure schematic diagram in a preferred embodiment of the present invention;

Fig. 2 is a partial structural schematic diagram in a preferred embodiment of the present invention;

Fig. 3 is the exploded schematic diagram in a preferred embodiment of the present invention;

FIG. 4 is a schematic three-dimensional structure diagram of a fixed mold in a preferred embodiment of the present invention;

5 is a schematic three-dimensional structure diagram of a movable mold and a base in a preferred embodiment of the present invention;

Fig. 6 is the partial enlarged schematic diagram of Fig. 5;

7 is a schematic three-dimensional structure diagram of a first molding module in a preferred embodiment of the present invention;

Fig. 8 is the partial enlarged schematic diagram of Fig. 7;

9 is a schematic exploded view of the first molding module in a preferred embodiment of the present invention;

10 is a top view of the first molding module in a preferred embodiment of the present invention;

Figure 11 is a left side view of the first molding module in a preferred embodiment of the present invention;

Fig. 12 is a partial structural schematic diagram of a connecting frame in a preferred embodiment of the present invention;

Figure 13 is a schematic three-dimensional structure diagram of a die-casting part in a preferred embodiment of the present invention;

14 is a schematic three-dimensional structural diagram of a workpiece body in a preferred embodiment of the present invention.

Shown in the picture:

1. Fixed mold; 11. Fixed template; 111. Guide post; 12. Fixed mold core; 13. Pouring port;

2. The first forming module;

21. The first drive module; 211, the connector;

22. Fixed frame;

23, the first core pulling; 231, the first core pulling direction;

24, the second core pulling; 241, the second core pulling direction; 242, the limit groove;

25. Drive;

26, connecting frame; 261, fixing block; 262, guide hole; 263, bayonet; 264, groove; 265, second surface; 266, slide rail; 267, blocking part;

271, side plate; 272, base;

28. The first insert;

3. The second forming module; 31. The second driving module; 32. The second insert;

4. The third forming module; 41. The third driving module; 42. The third insert; 43. The guide block;

5. The fourth forming module; 51. The fourth driving module; 52. The fourth insert;

6. Moving mold;

61. Moving formwork; 611. Chute;

62, movable mold core; 621, first core; 622, second core; 623, pin; 624, ejector hole;

63. Exhaust module;

7. base; 71, bottom plate; 72, support plate; 73, jacking module;

8. Die castings;

81, the workpiece body; 811, the oblique hole; 812, the first passage hole; 813, the first top port; 814, the second top port;

82, gate part; 83, front runner part; 84, rear runner part;

9. Parting surface.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, the foregoing and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement the described embodiments with reference to the description. Only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to refer to the same or like parts.

Unless otherwise defined, technical or scientific terms used herein should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first", "second" and similar terms used in the description of the patent application and the claims of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Likewise, words such as "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one. Words like "including" or "comprising" mean that the elements or items listed before "including" or "including" cover the elements or items listed after "including" or "including" and their equivalents, and do not exclude other component or object. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the size from top to bottom, "width" corresponds to the size from left to right, and "depth" corresponds to the size from front to back. These relative terms are for convenience of description and are generally not intended to require a specific orientation. Terms referring to attachment, coupling, etc. (eg, "connected" and "attached") refer to the fixed or attached relationship, as well as the movable or rigid attachment or relationship of these structures to each other, directly or indirectly, through intervening structures, unless The other way is explicitly stated.

Hereinafter, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments. .

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

The movable die 6 includes a movable die plate 61 and a movable die core 62 embedded on the movable die plate 61 . The movable die plate 61 is provided with no less than two moldings along the circumferential direction of the movable die core 62 . module, the inserts in the forming module are spliced so that the parting surface 9 of the die-casting mold is formed on the top surface of the insert, and the fixed die 1 is pressed against the top surface of the insert; located on the top of the forming module The shape of the parting surface 9 is simple, so that when the fixed mold 1 is separated from the molding module, the holding force is small, so as to facilitate demolding.

Referring to FIG. 4 , the fixed mold 1 includes a fixed mold plate 11 and a fixed mold core 12 embedded in the fixed mold plate 11 , and the fixed mold core 12 is used to form one end face of the valve body workpiece body 81 .

The two end faces corresponding to the workpiece body 81 are formed by the fixed die core 12 and the movable die core 62 , and the forming module is arranged on the periphery of the fixed die core 12 and the movable die core 62 , using the fixed die core 12 , the movable mold core 62 and the forming module are combined and spliced to form the cavity required for the die-casting part 8 including the workpiece body 81;

In a preferred embodiment, as shown in FIGS. 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 channels, wherein the opening of the channel on one end includes a first top port 813 and a second top port 814; a number of passage holes are opened on the side wall of the workpiece body 81, the passage holes include a first passage hole 812, and the axial directions of the remaining passage holes are the same as the axial directions of the first passage holes 812. Parallel or vertical arrangement, and the workpiece body 81 is also provided with an oblique hole 811, and the axial direction of the oblique hole 811 is inclined to the axial direction of the first passage hole 812;

As shown in FIGS. 5 and 6 , the movable mold core 62 is provided with several protruding cores; the cores include a first core 621 and a second core 622 , and the first core 621 is formed correspondingly The first top port 813, the second core 622 is used to form the second top port 814;

Specifically, pins 623 are respectively arranged on the periphery of the first core 621 and the second core 622 along the first core 621 and the second core 622 , and the workpiece body is formed through the pins 623 . 81 are the mounting connection holes on the periphery of the first top port 813 and the second top port 814, the movable mold core 62 is also provided with a number of top rod holes 624, and the top rod holes 624 are provided with top rods, through which The ejector rod pushes out the die casting 8 from the movable die 6 .

The forming module includes a driving module for driving the insert. One side of the insert is used to form part of the shape of the side wall of the workpiece body 81 , and the side wall of the workpiece body 81 is formed by a plurality of inserts. shape;

Specifically, under the driving action of the driving module, the inserts can be in a closed state or a dispersing state; wherein, when the inserts are in the closed state, the inserts are formed by splicing The shape of the side wall of the workpiece body 81 .

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

The movable platen 11 has a rectangular plate-like structure, and the drive 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 in the on each side of the movable template 11; the first forming module 2 includes a first insert 28 and a first driving module 21 for driving the first insert 28, and the second forming module 3 includes a second The insert 32 and the second drive module 31; the third molding module 4 includes the third insert 42 and the third drive module 41; the fourth forming module 5 includes the fourth insert 52 and the fourth drive Module 51, the first inserts 28, the second inserts 32, the third inserts 42 and the fourth inserts 52 are controlled by their respective drive modules to close inwardly, so that the first inserts 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 the workpiece body 81 is formed therebetween.

As shown in FIGS. 7-11 , the first forming module 2 includes a connecting frame 26 on which a first insert 28 is installed, and the first forming module 2 has a built-in first core pulling 23, the first core pulling 23 passes through the first insert 28;

the drive 25 mounted on the connecting frame 26; and

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

The first core-pulling 23 is driven by an external driving mechanism, so that the forming part on the first core-pulling 23 moves along the first core-pulling direction 231 on its axis, and the driver 25 drives the second core-pulling direction 231 . The core pulling 24 moves along the second core pulling direction 241 of the axis on the first core pulling 23, and the second core pulling direction 241 is inclined relative to the first core pulling direction 231, so that the two core pulling shapes form different angles hole at the location.

The angle α of the inclination between the second core pulling direction 241 and the first core pulling direction 231 ranges from 15° to 45°. When the angle α is too small, the driving component of the first core pulling 23 will Interference easily occurs between the drivers 25 of the second core pulling 24, and when the α angle is small enough, the same driving component can be used to pull the two core pulling; and when the α angle is large enough, a preferred In the scheme, the four sides of the mold are provided with a core-pulling mechanism. When the α angle is greater than 45°, the inclination angle between the second core-pulling mechanism 24 and another adjacent core-pulling mechanism is less than 45°. At this time, The second core pulling 24 can be arranged on another core pulling mechanism to save space.

Specifically, it is easy to form workpieces with complex surface shapes by splicing modular insert modules. In the process of multi-directional valve body forming, the complexity of its surface makes it difficult to determine the position of its parting surface during the design process. , that is, it is difficult to realize the demoulding process, and the shape of the parting surface can be greatly simplified to facilitate demolding through insert molding; while the multi-directional valve body is provided with a plurality of communicating holes, in order to form these holes, it is necessary to set core pulling mechanism, and there are oblique channels in these channels, in order to form the oblique channels, the second core pulling 24 in this embodiment is used for molding;

The first core pulling 23 and the second core pulling 24 are arranged on the connecting frame 26, the connecting frame 26 can receive the first insert 28, and the first core pulling 23 and the second core pulling 24 pass through The first insert 28, the first insert 28 is provided with a forming surface, the shape of the forming surface is processed into a partial shape of the workpiece, and the first core pulling 23 and the second core pulling 24 are formed from the first insert 28. The first core-pulling 23 and the second core-pulling 24 are arranged on the same first insert 28, which reduces the number of inserts, so as to reduce the driving device for driving the movement of the inserts, in order to drive the The device can drive the inserts. It is necessary to configure a suitable fixing frame for the driving device. Multiple fixing frames are arranged on the outside 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. It is difficult to accommodate more driving elements in the peripheral space; therefore, arranging the first core pulling 23 and the second core pulling 24 on the same connecting frame 26 can save space. The workpiece has a holding force on the core pulling. When the core pulling is pulled out, the core pulling will easily cause the workpiece to be pulled and deformed. Limiting the shape change of the workpiece, if the first core-pulling 23 and the second core-pulling 24 are divided into two inserts, the volume of each insert will be reduced, and the contact area with the workpiece will be reduced. Pressure is applied on the forming surface of the insert, and as the contact area decreases, the pressure on the contact area increases, causing the mold shape processed on the formable surface to be more easily damaged, thereby shortening the service life.

The first forming module 2 further includes a fixing bracket 22 and a first driving module 21 mounted on the fixing bracket 22. The first driving module 21 is used to drive the connecting frame 26 to pull along the first core. The first driving module 21 is installed on the fixing bracket 22, and the fixing bracket 22 is fixed on the base surface; the fixing bracket 22 is a fixing frame fixed on the periphery of the mold as a driving device. To support the force application point, in order to ensure its strength, the fixing bracket 22 is U-shaped, the two ends of the fixing bracket 22 are installed on the mold body, and the first driving module 21 is installed at the lowest point of the fixing bracket 22. At the position, 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 limit component is fixedly arranged relative to the fixing bracket 22 , and the limit component includes a side plate 271 and a base 272 . The connecting frame 26 is driven by the first driving module 21 to move along the direction defined by the limiting assembly.

As shown in detail in FIG. 6 , the upper surface 265 of the connecting frame 26 extends upward and protrudes to form a stepped body of the connecting frame 26 ; wherein, the raised part is used to form the first core pulling 23 and Mounting block for drive 25.

Specifically, the first mounting portion in the mounting block is disposed at one side edge of the connecting frame 26 , and the first mounting portion is used to install the first core pulling 23 so that the cross-section of the connecting frame 26 is The shape is L-shaped, and the first core pulling 23 passes through the connecting frame 26, so that the first core pulling 23 is fixed at the corner of the connecting frame 26, so as to increase the strength of the first core pulling 23. stability.

The mounting block further includes a second mounting portion for receiving the driver 25, the second mounting portion starts from the first mounting portion and extends along the second core pulling direction 241, and the driver 25 is fixedly mounted on the driver 25. one end of the second mounting portion away from the first mounting portion, thereby allowing the second core pulling 24 to pass through the second mounting portion;

The first mounting portion and the second mounting portion are integrally combined to form the overall structure of the mounting block, and finally the second core pulling 24 is transmitted from the first mounting portion, and the second core pulling 24 It extends to the same side as the first core pulling 23 .

Specifically, the mounting block is provided with a guide hole 262 penetrating the mounting block along the second core-pulling direction 241 , the guide hole 262 is located in the second mounting portion, and the second core-pulling 24 is provided with In the guide hole 262 , the second core pull 24 is connected with the guide hole 262 , and driven by the driver 25 , the second core pull 24 protrudes from the guide hole 262 .

Further, the mounting block is provided with a groove 264, and the groove 264 corresponds to the guide hole 262, so that the second core pulling 24 finally protrudes from the groove 264;

The second core pulling 24 is provided with a sleeve, the position between the sleeve and the connecting frame 26 is guaranteed to be relatively static, and the driver 25 drives the second core pulling 24 to slide relative to the sleeve, so A limiting groove 242 is defined on the outer wall of the sleeve at the position of the groove 264, and 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 inwardly concave annular groove provided on the sleeve, so that the sleeve forms a stepped shape, and the fixing block 261 includes two downwardly extending latch members, The corresponding two sides of the barrel are clamped to clamp the limiting groove 242, and at the same time, the fixing block 261 is fixedly connected with the connecting frame 26, thereby limiting the position of the sleeve.

A blocking portion 267 protrudes outward from the side wall of the connecting frame 26 . Referring to FIG. 2 , a space for the blocking portion 267 to slide is provided on the side plate 271 corresponding to the blocking portion 267 . At the same time, the moving distance of the connecting frame 26 is limited by the opening.

A connector 211 is installed on the power output end of the first driving module 21 , and a bayonet 263 is formed on one end of the connecting frame 26 close to the first driving module 21 , and the connector 211 extends into the connector. 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 of each other, and the side plate 271 and the base 272 remain relatively stationary. The side plate 271 and the base 272 are installed on the base plate. The base 272 is installed on the mold, the two sides of the connecting frame 26 are provided with sliding rails 266, and the gap between the side plate 271 and the base 272 is consistent with the thickness of the sliding rail 266, so that the The connecting frame 26 is restricted to move within the sliding track formed by the side plate 271 and the base 272 ; at the same time, the bottom of the side plate 271 is provided with a slot, when the slot is matched with the upper surface of the base 272 The sliding rails 266 are arranged to sandwich the connecting frame 26 therebetween.

The bottom of the movable mold 6 of the mold is provided with a base 7, and the base 7 includes a bottom plate 71 and a support plate 72 arranged between the bottom plate 71 and the movable template 61. The support plate 72 forms a accommodating space between the bottom plate 71 and the movable template 61, and a jacking module 73 with an ejector rod is arranged in the accommodating space, and is driven by an external driving device to drive the moving plate 72. The mold 6 drives the lifting module at the same time to realize mold opening.

The fixed mold 1 is provided with a pouring spout 13 that runs through the top and bottom, and the molding module corresponding to the pouring spout 13 is provided with a diversion block 43 , and a diversion groove is opened on the diversion block 43 . The flow block 43 extends into the pouring port 13, and the molten liquid flowing in from the outside flows into the cavity formed by the movable mold 6, the fixed mold 1 and the insert along the guide groove on the pouring port. The guide grooves are inclined downward slopes, so that the molten liquid flows into the cavity with gravity.

The first forming module 2 corresponds to the third forming module 4 , the first forming module 2 and the third forming module 4 are disposed opposite to each other, and the flow guide block 43 is disposed on the third inserting block On 42, since the side of the workpiece to be formed by the first insert 28 is relatively complicated, the guide block 43 is set on the corresponding third forming module 4, so that more molten liquid flows to one side of the first insert 28, thereby making The shape on the first insert 28 is sufficiently formed to ensure the quality of the die-cast workpiece;

The fixed die core 12 and the movable die core 62 are also provided with runners that communicate with the diversion grooves on the diversion block 43, so that the molten liquid flows along the runners at the desired forming position; the die casting 8 It also includes a sprue portion formed in the runner, the sprue portion is connected to the workpiece body 81 and the sprue portion 82 formed between the sprue 13 and the guide block 43, specifically, the sprue portion includes a front runner portion 83, which connects the workpiece body 81 and the gate part 82, and an exhaust module 63 is also installed on the movable mold 6, and the exhaust module 63 is arranged at the end of the upper flow channel of the movable mold core 62. The exhaust module 63 is used to discharge the air originally in the cavity from the exhaust module 63 during the die-casting molding process. The runner part also includes a rear runner part 84. When the molten liquid fills the entire cavity, the molten liquid also flows into the runner originally used for exhaust and solidifies in it.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form; any person of ordinary skill in the industry can smoothly implement the present invention as shown in the accompanying drawings and above; however, any Those skilled in the art, without departing from the scope of the technical solution of the present invention, make use of the above-disclosed technical content to make some changes, modifications and equivalent changes of evolution are equivalent embodiments of the present invention; at the same time, Any alteration, modification and evolution of any equivalent changes made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

A die-casting mold for a lightweight valve body, characterized in that it includes:

a moving die (6); and

a fixed mold (1) corresponding to the movable mold (6);

The movable die (6) includes a movable die plate (61) and a movable die core (62) embedded on the movable die plate (61). 62) There are no less than two forming modules arranged in the circumferential direction, the inserts in the forming modules are spliced so that the parting surface (9) of the die-casting mold is formed on the top surface of the inserts, and the fixed die (1) Press fit on the top surface of the insert.
The die-casting mold according to claim 1, characterized in that, the movable mold core (62) is provided with a plurality of raised cores;

A die-casting part (8) formed by the die-casting mold, the die-casting part (8) includes a workpiece body (81) as the valve body, and a top opening corresponding to the core is provided on the top of the workpiece body (81). , so that the movable die core (62) forms the top end face of the valve body workpiece body (81).
The die-casting mold according to 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) For forming one end face of the valve body workpiece body (81).
The die-casting mold according to claim 3, characterized in that, a guide post (111) is installed on the fixed plate (11), and the movable plate (61) is sleeved on the guide post (111), and passes through the guide post (111). The guide post (111) is used to limit the movement direction of the movable die (6).
The die-casting mold according to any one of claims 1-4, characterized in that the movable mold (6) and the fixed mold (1) form the shapes of the corresponding end faces on 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).
The die-casting mold according to claim 5, wherein the forming module comprises a driving module for driving the insert, and one side of the insert is used for forming the side wall of the workpiece body (81). part shape;

Under the driving action of the driving module, the inserts can be in a closed state or a dispersing state; wherein, when the inserts are in a closed state, the inserts are spliced to form a workpiece body ( 81) Shape of side walls.
The die-casting mold according to any one of claims 1 to 4, characterized in that, four of the forming modules are arranged in the circumferential direction of the movable die core (62), and the forming modules sequentially include a first a forming module (2), a second forming module (3), a third forming module (4) and a fourth forming module (5);

The movable template (11) has a rectangular plate-like structure, and the first forming module (2), the second forming module (3), the third forming module (4) and the fourth forming module (5) The inner drive modules are sequentially arranged on each side surface of the movable template (11).
The die-casting mold according to claim 7, wherein the first forming module (2) comprises: a connecting frame (26) on which a first insert (28) is mounted;

a first driving module (21), which is used for driving the connecting frame (26) to move in the direction of the movable mold core (62); and

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

Wherein, a first channel hole (812) and an oblique hole (811) inclined to the first channel hole (812) are provided on a side surface of the first insert (28) corresponding to the forming workpiece body (81);

A first core-pull (23) corresponding to the first channel hole (812) is installed on the connecting frame (26); a second core-pull (24) is installed on the power output end of the driver (25), so The second core pulling (24) is used for forming the oblique hole (811);

The first core pulling (23) and the second core pulling (24) protrude from the molding surface of the first insert (28).
The die-casting mold according to claim 8, characterized in that the upper surface (265) of the connecting frame (26) extends upward to form a stepped body of the connecting frame (26); A mounting block for receiving the first core pulling (23) and the driver (25) is formed.
The die-casting mold according to any one of claims 1-4, characterized in that, the fixed mold (1) is provided with a sprue (13) penetrating through the upper and lower sides, corresponding to the sprue (13). A guide block (43) is provided on the molding module, a guide groove is formed on the guide block (43), the guide block (43) extends into the pouring port (13), and the molten The liquid flows into the cavity formed by the movable mold (6), the fixed mold (1) and the insert along the guide groove on the pouring port.