CN218080266U

CN218080266U - Water jacket core mould

Info

Publication number: CN218080266U
Application number: CN202221999256.4U
Authority: CN
Inventors: 王绍希; 钱光怡; 汪松超
Original assignee: Xiangshan Lianqiang Automotive Mould Co ltd
Current assignee: Xiangshan Lianqiang Automotive Mould Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-20
Anticipated expiration: 2032-07-28

Abstract

The application discloses water jacket core mould, including the mould main part, be provided with main die cavity and sub-type chamber in the mould main part, the sub-type chamber is independent of outside the main die cavity and is connected with main die cavity, the sub-type chamber is suitable for the sub-sand mould of shaping, be provided with ejecting device in the sub-type intracavity, ejecting device is suitable for ejecting sub-core, be provided with extension mechanism on the ejecting device, extension mechanism is suitable for increasing ejecting device and sub-core's area of contact when ejecting sub-core, this core mould has made the optimization to the ejecting process of sub-type core in the sub-type intracavity, utilize extension mechanism can obtain better ejecting effect when using ejection device that the quantity is less, promote the ejecting stability of sub-type core, reduce the sub-core when ejecting and main core emergence fracture probability, can also reduce cost and reduce the installation quantity of ejector pin.

Description

Water jacket core mould

Technical Field

The application relates to the technical field of casting molds, in particular to a water jacket core mold.

Background

The molding sand is used for manufacturing a core in casting production, the molding sand can be injected into a mold through a sand injection molding machine to form a core, the structure of the core needs to be designed according to the structure of a casting, the core is used for forming the internal structure of the casting during casting, and the core is also used for forming a casting mold during production of a large casting, namely the core assembly molding.

However, the conventional core mold has the following drawbacks: because the shape of core is various and irregular, when meeting the core and need set up a sub-cavity outside main cavity, the core after the shaping is comparatively weak in the connection between main cavity and sub-type cavity, during the drawing of patterns, uses conventional ejector pin structure directly to carry out ejecting stability relatively poor, has the probability to break off, influences production efficiency.

Disclosure of Invention

An object of the present application is to provide a water jacket core mold capable of increasing the ejection stability of a sub-core.

In order to achieve the above purpose, the technical scheme adopted by the application is as follows: a water jacket core mold comprises a mold main body, wherein a main cavity and a sub-cavity are arranged on the mold main body, the sub-cavity is independent of the main cavity and is connected with the main cavity, the sub-cavity is suitable for molding a sub-sand mold, an ejection device is arranged in the sub-cavity and is suitable for ejecting the sub-core, an expansion mechanism is arranged on the ejection device, and the expansion mechanism is suitable for increasing the contact area between the ejection device and the sub-core when the sub-core is ejected.

Specifically, an ejection channel is formed in the die body, the ejection device comprises an ejector rod, the expansion mechanism is arranged on the ejector rod, and the ejector rod is suitable for being accommodated in the ejection channel in a matching manner with the expansion mechanism.

Specifically, the expansion mechanism includes the development piece, and the holding chamber has been seted up along circumference at the top of ejector pin, the development piece slip cap is located the holding intracavity, the bottom of development piece with be provided with control mechanism between the ejector pin, the development piece includes a plurality of development portions, the development portion set up along circumference in the top of development piece, when the top of ejector pin breaks away from ejecting passageway, control mechanism is suitable for control the development piece to the son type core direction slides, the development portion be suitable for to the ejector pin outside warp and support to the surface of son type core.

As an improvement, the unfolding component comprises a guide part, the guide part is slidably sleeved in the accommodating cavity, a sealing element is arranged on the guide part, and the sealing element is arranged between the guide part and the ejector rod in an interference fit manner.

As an improvement, the control mechanism comprises an air channel and an air cavity, the guide part is suitable for being matched with the ejector rod and the ejection channel to form the air cavity, the air channel is arranged inside the ejector rod and communicated with the air cavity and air regulating equipment, the air cavity is suitable for being inflated and pressurized to enable the guide part to slide towards the top of the ejector rod, and the air cavity is suitable for being deflated and depressurized to enable the guide part to slide towards the bottom of the ejector rod.

As an improvement, the accommodating cavity gradually shrinks from the bottom to the top, a movable gap is arranged between the bottom of the expansion part and the ejector rod in the accommodating cavity, and the sealing element is suitable for sealing the movable gap.

As an improvement, a concave part is arranged at the bottom of the accommodating cavity, the gas channel is suitable for being communicated with the lower side of the concave part, and when the guide part moves to the bottom of the accommodating cavity, the guide part is suitable for abutting against the higher side of the concave part.

As an improvement, a guide inclined plane is arranged at the top end of the accommodating cavity and is suitable for guiding the expansion part to deform towards the outer side of the ejector rod.

As an improvement, the sealing element is fixedly connected with the guide part, the main body structure of the sealing element is annular, and the interior of the sealing element is of a hollow structure.

Preferably, the mold body includes an upper mold and a lower mold, and the ejection device is disposed on the lower mold and adapted to eject the sub-core molded in the sub-cavity upward.

Compared with the prior art, the beneficial effect of this application lies in: the ejection device at the sub-cavity is optimized, the expansion mechanism is arranged on the ejection device, and the expansion mechanism can increase the contact area between the ejection device and the sub-core when the sub-core is ejected out by the ejection device, so that the stress stability between the ejection device and the sub-core is improved, and the probability of breakage of connection between the sub-core and the main core due to uneven stress during die opening ejection of the sub-core is reduced; the expansion mechanism is arranged on the ejection device, so that the matching structure between the ejection mechanism and the sub-type cavity is unchanged, the molding of a core is not influenced, the ejection device can be replaced and modified under the condition that the design of an original mold is not influenced, and the upgrading cost is lower.

Drawings

FIG. 1 is a structural view of the entirety of a cavity in a mold body according to a preferred embodiment of the present application;

FIG. 2 isbase:Sub>A cross-sectional view taken along the line A-A of FIG. 1 in accordance withbase:Sub>A preferred embodiment of the present application;

FIG. 3 is an enlarged view at a in FIG. 2 according to a preferred embodiment of the present application;

FIG. 4 is a schematic structural view of an expansion mechanism according to a preferred embodiment of the present application as deployed;

FIG. 5 is a cross-sectional view of a deployment member according to a preferred embodiment of the present application;

figure 6 is a top view of a deployment member according to a preferred embodiment of the present application.

In the figure: 1. a mold body; 11. a main cavity; 12. a sub-cavity; 121. ejecting a channel; 2. an ejection device; 21. an expansion mechanism; 211. a deployment member; 2111. an unfolding part; 2112. a guide section; 212. a seal member; 213. a clearance for movement; 22. a top rod; 221. an accommodating cavity; 2211. a recessed portion; 222. a guide ramp; 23. a top plate; 24. a control mechanism; 241. a gas channel; 242. an air cavity.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present application is further described with reference to the accompanying drawings:

as shown in fig. 1 to 6, a preferred embodiment of the present application includes a mold body 1, a main cavity 11 and a sub-cavity 12 are provided in the mold body 1, the sub-cavity 12 is independent from the main cavity 11 and is connected to the main cavity 11, the sub-cavity 12 is adapted to form a sub-sand mold, when forming the sand mold, in order to realize mold casting of different shapes, a sand mold with a complex structure is generally manufactured, which may have a sub-core with a weaker connection to the main core, and when opening the mold, the main core and the sub-core need to be ejected simultaneously, during which, due to a smaller ejection area of a conventional single ejector rod structure design, if an installation position is deviated or an ejection deviation causes an imbalance in ejection force of the sub-core, the connection strength between the sub-core and the main core may be reduced or even damaged, and a subsequent casting process may be affected.

The ejecting device 2 is arranged in the sub-cavity 12, the ejecting device 2 is suitable for ejecting the sub-core, the expanding mechanism 21 is arranged on the ejecting device 2, the expanding mechanism 21 is suitable for increasing the contact area between the ejecting device 2 and the sub-core when the sub-core is ejected, in order to solve the problems, the stability when the sub-core is ejected is increased as much as possible, the expanding mechanism 21 is arranged on the ejecting device 2 of the sub-core, the expanding mechanism 21 can assist the ejecting device 2, and the ejecting device 2 is enabled to be more balanced in stress distribution by increasing the contact area when the ejecting device 2 ejects the sub-core, so that the ejection stability is improved.

The ejection channel 121 is formed in the die body 1, the ejection device 2 comprises the ejector rod 22 and the top plate 23, the expansion mechanism 21 is arranged on the ejector rod 22, the ejector rod 22 is suitable for being accommodated in the ejection channel 121 in cooperation with the expansion mechanism 21, the expansion mechanism 21 is designed to be accommodated, the structure is compact, redundant space is not occupied, the original ejection channel 121 in the die body 1 can be directly used, the ejection channel 121 does not need to be modified, the modification difficulty and the modification cost are reduced, and the top plate 23 is suitable for enabling the top of the ejector rod 22 to extend out of the ejection channel 121.

The mold main body 1 comprises an upper mold and a lower mold, the ejection device 2 is arranged on the lower mold, the ejection device 2 is suitable for ejecting the sub-type cores formed in the sub-mold cavities 12 upwards, and the ejection effect is more stable.

The expanding mechanism 21 comprises an expanding part 211, the top of the ejector rod 22 is provided with an accommodating cavity 221 along the circumferential direction, the expanding part 211 is slidably sleeved in the accommodating cavity 221, a control mechanism 24 is arranged between the bottom of the expanding part 211 and the ejector rod 22, the expanding part 211 comprises a plurality of expanding parts 2111, the expanding parts 2111 are circumferentially arranged at the top of the expanding part 211, when the top of the ejector rod 22 is separated from the ejection channel 121, the control mechanism 24 is suitable for controlling the expanding part 211 to slide towards the sub-core direction, the expanding parts 2111 are suitable for deforming towards the outer side of the ejector rod 22 and abutting against the surface of the sub-core, and the expanding parts 2111 can realize self-adaptive expansion and accommodation under the control of the control mechanism 24.

The unfolding component 211 comprises a guide part 2112, the guide part 2112 is slidably sleeved in the accommodating cavity 221, a sealing element 212 is arranged on the guide part 2112, the sealing element 212 is arranged between the guide part 2112 and the ejector rod 22 in an interference fit mode, the sealing element 212 is used for sealing a gap between the guide part 2112 and the ejector rod 22, meanwhile, the sealing element 212 can play a damping role, the sliding effect between the guide part 2112 and the ejector rod 22 is reduced, and the guide part 2112 is prevented from sliding randomly.

The unfolding portion 2111 is preferably made of a material with elastic deformation capacity, so that the unfolding portion 2111 can be retracted into the accommodating cavity 221 along with the restoration of the guide portion 2112, the occupied space is reduced, and the unfolding portion 2111 can be repeatedly deformed and utilized without replacement.

The control mechanism 24 comprises a gas channel 241 and a gas cavity 242, the guide portion 2112 is suitable for being matched with the ejector rod 22 and the ejection channel 121 to form the gas cavity 242, the gas channel 241 is arranged inside the ejector rod 22, the gas channel 241 is communicated with the gas cavity 242 and a gas adjusting device, the gas cavity 242 is suitable for being inflated and pressurized to enable the guide portion 2112 to slide towards the top of the ejector rod 22, the gas cavity 242 is suitable for being exhausted and depressurized to enable the guide portion 2112 to slide towards the bottom of the ejector rod 22, when the guide portion 2112 is controlled to slide by using air pressure, the expansion portion 2111 is pushed to abut against the surface of the daughter core by pressurization, the compressibility of gas is matched with the elastic deformation capacity of the expansion portion 2111, the expansion portion 2111 can be adapted to the surface of the daughter core to be abutted, stable supporting capacity can be provided, certain buffering capacity can be obtained, and protection of the daughter core is increased.

The accommodating cavity 221 gradually shrinks from the bottom to the top, a movable gap 213 is arranged between the bottom of the expansion portion 2111 and the ejector rod 22 in the accommodating cavity 221, the sealing element 212 is suitable for sealing the movable gap 213, the guide portion 2112 can slide on the ejector rod 22 in the accommodating cavity 221 in the shrinking design, the movable gap 213 can prevent the guide portion 2112 from being clamped with the ejector rod 22 in the moving process to limit the movement of the guide portion 2112, the shrinking design of the accommodating cavity 221 can increase the sealing performance of the guide portion 2112 when the expansion portion 2111 expands, the expansion portion 2111 is prevented from being difficult to reset after being expanded, meanwhile, the sealing element 212 can prevent the guide portion 2112 from moving along with the shrinkage of the accommodating cavity 221, the guide portion 2112 is prevented from directly impacting the ejector rod 22, and a relatively limiting effect is achieved.

The bottom of the accommodating cavity 221 is provided with a recess 2211, the gas channel 241 is suitable for being communicated with the lower side of the recess 2211, and when the guide portion 2112 moves to the bottom of the accommodating cavity 221, the guide portion 2112 is suitable for abutting against the higher side of the recess 2211, so that the connection between the gas channel 241 and the accommodating cavity 221 is prevented from being closed by the guide portion 2112 in the moving process, and the operation stability is improved.

The top end of the accommodating cavity 221 is provided with a guiding inclined surface 222, the guiding inclined surface 222 is suitable for guiding the expansion portion 2111 to deform towards the outer side of the ejector rod 22, the guiding inclined surface 222 can help the expansion portion 2111 to open and deform towards the outer side, the opened expansion portion 2111 can abut against the accommodating cavity 221 around the top of the ejector rod 22, the contact area is increased, and the stress effect is uniformly improved.

The sealing element 212 is fixedly connected with the guide portion 2112, the main body structure of the sealing element 212 is annular, the interior of the sealing element 212 is a hollow structure, the sealing element 212 and the guide portion 2112 are fixedly connected, the sealing element 212 can move along with the guide portion 2112, the sealing element 212 is prevented from being separated from the guide portion 2112 in the moving process, the annular structure can be sealed without dead angles, the hollow structure design can increase the deformation capacity of the sealing element 212, and the moving capacity of the sealing element 212 and the ejector rod 22 in the interference fit state in the moving process of the guide portion 2112 is improved.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A water jacket core mould which is characterized in that: the sub-mold core ejecting device comprises a mold main body, wherein a main cavity and a sub-cavity are arranged on the mold main body, the sub-cavity is independent of the main cavity and is connected with the main cavity, the sub-cavity is suitable for molding a sub-mold, an ejecting device is arranged in the sub-cavity and is suitable for ejecting the sub-mold core, an expanding mechanism is arranged on the ejecting device and is suitable for increasing the contact area between the ejecting device and the sub-mold core when the sub-mold core is ejected.

2. A water jacket core mold as set forth in claim 1 wherein: the ejection device comprises an ejector rod, the expansion mechanism is arranged on the ejector rod, and the ejector rod is suitable for being accommodated in the ejection channel in a matching manner with the expansion mechanism.

3. A water jacket core mold as set forth in claim 1 wherein: the expansion mechanism comprises an expansion piece, a containing cavity is formed in the top of the ejector rod along the circumferential direction, the expansion piece is sleeved in the containing cavity in a sliding mode, a control mechanism is arranged between the bottom of the expansion piece and the ejector rod, the expansion piece comprises a plurality of expansion portions, the expansion portions are arranged on the top of the expansion piece along the circumferential direction, when the top of the ejector rod is separated from the ejection channel, the control mechanism is suitable for controlling the expansion piece to slide towards the sub-type core direction, and the expansion portions are suitable for deforming towards the outer side of the ejector rod and abutting against the surface of the sub-type core.

4. A water jacket core mold as set forth in claim 3 wherein: the unfolding piece comprises a guide part, the guide part is slidably sleeved in the accommodating cavity, a sealing piece is arranged on the guide part, and the sealing piece is arranged between the guide part and the ejector rod in an interference fit mode.

5. The water jacket core mold as recited in claim 4, wherein: the control mechanism comprises an air channel and an air cavity, the guide part is suitable for being matched with the ejector rod and the ejection channel to form the air cavity, the air channel is arranged inside the ejector rod and communicated with the air cavity and air adjusting equipment, the air cavity is suitable for being inflated and pressurized to enable the guide part to slide to the top of the ejector rod, and the air cavity is suitable for being deflated and depressurized to enable the guide part to slide to the bottom of the ejector rod.

6. A water jacket core mold as set forth in claim 5 wherein: the containing cavity gradually shrinks from the bottom to the top, a movable gap is arranged between the bottom of the unfolding part and the ejector rod in the containing cavity, and the sealing element is suitable for sealing the movable gap.

7. A water jacket core mold as set forth in claim 5 wherein: the bottom of holding chamber is provided with the depressed part, the gas passage is suitable for the intercommunication the lower side of depressed part, when guide portion moves to the bottom of holding chamber, guide portion is suitable for to the higher side of depressed part.

8. A water jacket core mold as set forth in claim 3 wherein: the top end of the accommodating cavity is provided with a guide inclined plane which is suitable for guiding the unfolding part to deform towards the outer side of the ejector rod.

9. The water jacket core mold as recited in claim 4, wherein: the sealing element is fixedly connected with the guiding part, the main body structure of the sealing element is annular, and the inside of the sealing element is of a hollow structure.

10. A water jacket core mold as set forth in claim 1 wherein: the mould main body comprises an upper mould and a lower mould, the ejection device is arranged on the lower mould, and the ejection device is suitable for ejecting the sub-core formed in the sub-cavity upwards.