CN218315015U

CN218315015U - Be used for fashioned frock mould of rotor propeller hub arm

Info

Publication number: CN218315015U
Application number: CN202222503024.1U
Authority: CN
Inventors: 孙志武
Original assignee: Shanghai Zhehang Helicopter Technology Co Ltd
Current assignee: Shanghai Zhehang Helicopter Technology Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-17
Anticipated expiration: 2032-09-20

Abstract

The utility model relates to an unmanned helicopter spare part makes technical field, specifically is a be used for fashioned frock mould of rotor propeller hub arm, include: the mould comprises a mould body, a foam mould core and a packaging assembly; the mould body comprises an upper mould and a lower mould which are buckled up and down, an upper injection groove is formed in the bottom surface of the upper mould, and a lower injection groove is formed in the top surface of the lower mould; the packaging assembly comprises a pressurizing cover and a packaging cover which are respectively arranged at two ends of the mould body, and the pressurizing cover and the packaging cover respectively support two ends of the foam mould core, so that injection moulding gaps are reserved among the foam mould core, the upper injection moulding groove and the lower injection moulding groove; and the pressurizing cover is provided with an inflation channel, one end of the foam mold core is provided with a connecting channel, and the inflation channel is communicated with the injection molding gap through the connecting channel. This frock mould utilizes the inflation channel that the pressure boost was covered to fill gas in the mould for the fluid of moulding plastics atress in the clearance of moulding plastics is even, and the product surface after moulding plastics is smooth, promotes the shaping precision on rotor propeller hub arm surface, and is convenient for the drawing of patterns.

Description

Be used for fashioned frock mould of rotor propeller hub arm

Technical Field

The utility model relates to an unmanned helicopter spare part makes technical field, specifically is a frock mould that is used for rotor propeller hub arm fashioned.

Background

The helicopter is one of the unique creations of 20 th century aviation technology, and the application range of the aircraft is greatly expanded. The helicopter is a typical dual-purpose product for military and civilian use, and can be widely applied to multiple fields of transportation, patrol, travel, rescue and the like.

At present, unmanned helicopter is the remote control aircraft that extends in the development of helicopter technical field, it is in the manufacturing process, rotor hub arm is the structural component who is used for connecting helicopter rotor and rotor shaft, adopt combined material to mould plastics usually and form, current rotor hub arm is when producing with still adopt traditional injection moulding process to accomplish, mostly be solid construction, inside does not have filling structure, lead to its weight big, the transmission efficiency who makes the rotor shaft of helicopter descends, and rotor hub arm surface accuracy after the shaping is low, the drawing of patterns is difficult, still need polishing after the shaping technology such as, the process of manufacture is complicated. In view of this, we propose a tooling mold for rotor hub arm molding.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for fashioned frock mould of rotor propeller hub arm to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a tooling die for rotor hub arm molding, comprising: the mould comprises a mould body, a foam mould core and a packaging assembly; the mold body comprises an upper mold and a lower mold which are buckled up and down, an upper injection molding groove is formed in the bottom surface of the upper mold, an injection molding hole communicated with the upper injection molding groove is further formed in the upper mold, and a lower injection molding groove is formed in the top surface of the lower mold; the foam mold core is arranged between the upper injection molding groove and the lower injection molding groove; the packaging assembly comprises a pressurizing cover and a packaging cover which are respectively arranged at two ends of the mould body, and the pressurizing cover and the packaging cover respectively support two ends of the foam mould core, so that injection gaps are reserved between the foam mould core and the upper injection groove and between the foam mould core and the lower injection groove; and an inflation channel is arranged on the pressurizing cover, a connecting channel is arranged at one end of the foam mold core, and the inflation channel is communicated with the injection molding gap through the connecting channel.

Preferably, the pressurizing cover and the die body, and the packaging cover and the die body are connected with each other through bolts.

Preferably, still be provided with multiunit holder on the mould body, the holder includes: the clamping device comprises an upper clamping plate and a lower clamping plate, wherein the two ends of the upper clamping plate and the lower clamping plate are connected through bolts arranged to clamp the upper die and the lower die.

Preferably, one end of the foam mold core is provided with a slot, and the connecting channels are provided with a plurality of groups along the circumferential direction of the inner wall of the slot;

and a plug-in connector is arranged on one side of the pressurizing cover and is plugged in the slot, a plurality of groups of air outlets are arranged at one end of the air charging channel along the end part of the plug-in connector, and the air outlets are communicated with the connecting channel in a one-to-one correspondence manner.

Compared with the prior art, the beneficial effects of the utility model are that: this a frock mould for rotor hub arm shaping, utilize the inflation channel on the pressure increasing lid to this internal gas of filling of mould, increase the pressure in the injection moulding clearance that forms between foam mold core and the last groove of moulding plastics, lower groove of moulding plastics, make the fluid of moulding plastics atress even in the injection moulding clearance, better docile on the inner wall in last groove of moulding plastics and lower groove of moulding plastics, make the product surface after moulding plastics smooth, promote the shaping precision on rotor hub arm surface, can be convenient for carry out the drawing of patterns after the shaping, the product need not to polish the technology again after the shaping, the manufacturing process is simple, and the rotor hub arm weight of filling foam mold core is lighter, improve the transmission efficiency of helicopter rotor shaft.

Drawings

Fig. 1 is a top view of the overall structure of the present invention;

fig. 2 is a front sectional view of the overall structure of the present invention.

In the figure:

1. a mold body; 11. an upper die; 111. an upper injection molding groove; 112. injection molding holes; 12. a lower die; 121. a lower injection molding groove; 13. a clamping member; 131. an upper splint; 132. a lower splint;

2. a foam mold core; 21. a connecting channel; 22. a slot;

3. a package assembly; 31. a pressurizing cover; 311. an inflation channel; 312. a plug-in connector; 313. an air outlet; 32. a package cover; 33. and (7) sealing the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by one of ordinary skill in the art as appropriate. In the description of the present invention, "plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution:

a tooling die for rotor hub arm molding, comprising: the mould comprises a mould body 1, a foam mould core 2 and a packaging assembly 3; the mold body 1 comprises an upper mold 11 and a lower mold 12 which are buckled up and down, the bottom surface of the upper mold 11 is provided with an upper injection molding groove 111, the upper mold 11 is also provided with an injection molding hole 112 communicated with the upper injection molding groove 111, and the top surface of the lower mold 12 is provided with a lower injection molding groove 121; the foam mold core 2 is arranged between the upper injection molding groove 111 and the lower injection molding groove 121; the packaging assembly 3 comprises a pressurizing cover 31 and a packaging cover 32 which are respectively arranged at two ends of the mould body 1, the pressurizing cover 31 and the packaging cover 32 respectively support two ends of the foam mould core 2, and injection molding gaps are reserved among the foam mould core 2, the upper injection molding groove 111 and the lower injection molding groove 121; and an inflation channel 311 is arranged on the pressurizing cover 31, a connecting channel 21 is arranged at one end of the foam mold core 2, and the inflation channel 311 is communicated with the injection molding gap through the connecting channel 21. Therefore, after the upper die 11 and the lower die 12 are fastened, the upper injection molding groove 111 and the lower injection molding groove 121 form the shape of a rotor hub arm, molten composite material fluid is injected into the die body 1 through the injection molding holes 112, so that the fluid is wrapped on the surface of the foam mold core 2, meanwhile, the inflation channel 311 on the pressurization cover 31 is used for inflating gas (air) into the die body 1, the pressure intensity in the injection molding gap formed between the foam mold core 2 and the upper injection molding groove 111 and between the foam mold core and the lower injection molding groove 121 is increased, so that the stress of the injection molding fluid in the injection molding gap is uniform, the injection molding fluid can be well attached to the inner walls of the upper injection molding groove 111 and the lower injection molding groove 121, the surface of an injection molded product is smooth, the molding precision of the surface of the rotor hub arm is improved, the demolding after the molding can be convenient, the weight of the rotor hub arm filled with the foam mold core is light, and the transmission efficiency of the helicopter rotor shaft is improved.

It should be noted that the sealing covers 33 are connected between the pressurizing cover 31 and the mold body 1 and between the encapsulating cover 32 and the mold body 1 through bolts. The sealing covers 33 can prevent gas from overflowing from the two ends of the die body 1 in the process of inflating, and sealing effect is improved.

Further, still be provided with multiunit holder 13 on the mould body 1, holder 13 includes: the upper clamp plate 131 and the lower clamp plate 132, and the both ends of the upper clamp plate 131 and the lower clamp plate 132 are connected with the upper mold 11 and the lower mold 12 through the bolts. The clamping piece 13 is arranged to facilitate the mutual buckling between the upper die 11 and the lower die 12 to complete the assembly of the die body 1.

In addition, one end of the foam mold core 2 is provided with a slot 22, and a plurality of groups of connecting channels 21 are arranged along the circumferential direction of the inner wall of the slot 22; a plug 312 is arranged at one side of the pressurizing cover 31, the plug 312 is plugged in the slot 22, a plurality of groups of air outlets 313 are arranged at one end of the air charging channel 311 along the end part of the plug 312, and the air outlets 313 are communicated with the connecting channels 21 in a one-to-one correspondence manner. Through the mutual cooperation of the arranged plug-in connector 312 and the slot 22, the foam mold core 2 can be positioned, so that the width of an injection molding gap between the upper mold 11 and the lower mold 12 can be kept unchanged during inflation, and the foam mold core can be communicated with the inflation channel 311 through a plurality of groups of connecting channels 21 and air outlets 313 to quickly complete inflation operation in the injection molding process.

When the tooling mold for molding the rotor hub arm in the embodiment is used, after the upper mold 11 and the lower mold 12 are buckled, the upper injection molding groove 111 and the lower injection molding groove 121 form the appearance of the rotor hub arm, molten composite material fluid is injected into the mold body 1 through the injection molding hole 112, the fluid is wrapped on the surface of the foam mold core 2, meanwhile, gas (air) is filled into the mold body 1 through the inflation channel 311 on the pressurization cover 31, the pressure in the injection molding gap formed between the foam mold core 2 and the upper injection molding groove 111 and between the foam mold core 2 and the lower injection molding groove 121 is increased, the stress of the injection molded fluid in the injection molding gap is uniform, the injection molded fluid is better attached to the inner walls of the upper injection molding groove 111 and the lower injection molding groove 121, the surface of an injection molded product is smooth, the molding precision of the surface of the rotor hub arm is improved, demolding after molding can be convenient, a polishing process is not needed after the product is molded, the manufacturing process is simple, the weight of the rotor hub arm filled with the foam mold core is lighter, and the transmission efficiency of the helicopter rotor shaft is improved.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a be used for fashioned frock mould of rotor hub arm which characterized in that includes: the mould comprises a mould body (1), a foam mould core (2) and a packaging assembly (3);

the die body (1) comprises an upper die (11) and a lower die (12) which are buckled up and down, an upper injection groove (111) is formed in the bottom surface of the upper die (11), an injection hole (112) communicated with the upper injection groove (111) is formed in the upper die (11), and a lower injection groove (121) is formed in the top surface of the lower die (12);

the foam mold core (2) is arranged between the upper injection molding groove (111) and the lower injection molding groove (121);

the packaging assembly (3) comprises a pressurizing cover (31) and a packaging cover (32) which are respectively arranged at two ends of the mold body (1), the pressurizing cover (31) and the packaging cover (32) respectively support against two ends of the foam mold core (2), and an injection molding gap is reserved between the foam mold core (2) and the upper injection molding groove (111) and the lower injection molding groove (121); and an inflation channel (311) is arranged on the pressurization cover (31), a connecting channel (21) is arranged at one end of the foam mold core (2), and the inflation channel (311) is communicated with the injection molding gap through the connecting channel (21).

2. A tooling mold for rotor hub arm molding according to claim 1 wherein: and sealing covers (33) are connected between the pressurizing cover (31) and the die body (1) and between the packaging cover (32) and the die body (1) through bolts.

3. A tooling mold for rotor hub arm tooling according to claim 1 wherein: still be provided with multiunit holder (13) on mould body (1), holder (13) include: the clamping device comprises an upper clamping plate (131) and a lower clamping plate (132), wherein the two ends of the upper clamping plate (131) and the lower clamping plate (132) are connected through bolts arranged to clamp the upper die (11) and the lower die (12) in a buckled mode.

4. A tooling mold for rotor hub arm molding according to claim 1 wherein: one end of the foam mold core (2) is provided with a slot (22), and a plurality of groups of connecting channels (21) are arranged along the circumferential direction of the inner wall of the slot (22);

one side of the pressurizing cover (31) is provided with a plug-in connector (312), the plug-in connector (312) is plugged in the slot (22), a plurality of groups of air outlets (313) are formed in one end of the inflating channel (311) along the end portion of the plug-in connector (312), and the air outlets (313) are communicated with the connecting channel (21) in a one-to-one correspondence mode.