CN212764887U

CN212764887U - Hub forming die of split type composite material propeller

Info

Publication number: CN212764887U
Application number: CN202021425995.3U
Authority: CN
Inventors: 郑子衡
Original assignee: Dongguan Haoyu Intelligent Composite Material Co ltd
Current assignee: Dongguan Haoyu Intelligent Composite Material Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-03-23
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a propeller hub forming die of split type combined material screw, include: the lower die comprises a lower die plate, and a first accommodating groove is formed in the lower die plate; the mould core assembly comprises more than two mould cores and a lower mould insert, and the more than two mould cores are separably matched; the inner side surface of the mold core is provided with a groove, and the inner wall of the groove is provided with a protruding part; the grooves of more than two die cores are enclosed to form a hub accommodating cavity with an opening at the bottom, and the size and the shape of the hub accommodating cavity are matched with the external contour of the hub; the lower die insert is arranged in the middle of an opening at the bottom of the propeller hub accommodating cavity, and the lower die insert and the propeller hub accommodating cavity define a cavity together; the upper die comprises an upper die plate, a second accommodating groove is formed in the upper die plate, and the second accommodating groove and the first accommodating groove are enclosed to form an accommodating cavity for accommodating the die core assembly. The utility model has the characteristics of the mould assembly is accurate, make things convenient for the drawing of patterns and the product percent of pass is high.

Description

Hub forming die of split type composite material propeller

Technical Field

The utility model relates to a mould, concretely relates to propeller hub forming die of split type combined material screw.

Background

The propeller is a device for converting the rotating power of an engine into propelling force by rotating blades in air or water, and can be a marine propeller with two or more blades connected with a propeller hub, and the backward surface of each blade is a helicoid or a surface similar to the helicoid. At present, propellers comprise conventional metal propellers and composite propellers, and compared with the conventional metal propellers, the composite propellers have the advantages of light weight, high efficiency, low vibration, seawater corrosion resistance, easiness in maintenance and the like.

At present, the composite material blade adopts a co-curing compression molding process, when the shape of the composite material hub is irregular, the mold design of the composite material hub is difficult, the mold assembly and the demolding of the hub are not facilitated, and the product yield is low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a propeller hub forming die of a split type composite material propeller, which has the characteristics of accurate die assembly, convenient demoulding and high product qualification rate.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the utility model provides a propeller hub forming die of split type combined material screw which characterized in that includes:

the lower die comprises a lower die plate, and a first accommodating groove is formed in the lower die plate;

the mold insert comprises a first accommodating groove, a mold core assembly and a second accommodating groove, wherein the mold core assembly comprises more than two mold cores and a lower mold insert which are respectively arranged in the first accommodating groove, and the more than two mold cores are separably matched; the inner side surface of the mold core is provided with a groove, and the inner wall of the groove is provided with a protruding part; the grooves of more than two die cores are enclosed to form a hub accommodating cavity with an opening at the bottom, and the size and the shape of the hub accommodating cavity are matched with the external contour of the hub; the lower die insert is arranged in the middle of an opening at the bottom of the propeller hub accommodating cavity, and the lower die insert and the propeller hub accommodating cavity define a cavity together;

the mould comprises an upper mould and a lower mould, wherein the upper mould comprises an upper mould plate, a second accommodating groove is formed in the upper mould plate, and the second accommodating groove and the first accommodating groove form an accommodating cavity for accommodating the mould core assembly after being enclosed.

In an optional embodiment, the number of the mold cores is three, a guide block is arranged on the bottom wall of each mold core, a guide groove is arranged at a position corresponding to each guide block on the bottom wall of the first accommodating groove, and the guide blocks are connected with the guide grooves in a one-to-one corresponding sliding fit manner.

In an alternative embodiment, the hub includes a hub body made of a composite material, three recesses are uniformly arranged on an outer wall of the hub body in the circumferential direction, an inner bottom wall of each recess is an inclined arc-shaped surface, and an outer surface of the protruding portion of the mold core is an inclined arc-shaped surface.

In an optional embodiment, the hub is a bullet-head type structure with a mounting hole penetrating in the axial direction in the middle, and the bullet-head type structure comprises a bullet part and a bullet part with a gradually reduced diameter, wherein the bullet part is formed by extending one end surface of the bullet part outwards; correspondingly, the hub accommodating cavity is in a bullet-shaped structure.

In an optional embodiment, the hub is a cylinder with a mounting hole running through the middle part along the axial direction; correspondingly, the hub accommodating cavity is cylindrical.

In an alternative embodiment, the included angle between every two adjacent guide grooves is 120 °.

In an optional embodiment, the number of the mold core assemblies is two or more, and the number of the accommodating cavities is two or more.

In an alternative embodiment, the number of the mold insert assemblies is two, four, six, eight or ten, and the number of the receiving cavities is two, four, six, eight or ten, which are distributed in a mirror image along the center line in the length direction or the width direction.

In an optional implementation manner, the lower die and the upper die are connected in a matching manner through a guide pillar and a guide sleeve.

In an optional embodiment, the top surface of the mold core is further provided with a knocking groove, and the upper mold plate is provided with a through hole corresponding to each mold core.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a forming die comprises a lower template, an upper template and a die core assembly, wherein the die core assembly comprises more than two die cores and a lower die insert which are respectively arranged in a first holding tank, and the more than two die cores are separably matched; the inner side surface of the mold core is provided with a groove, and the inner wall of the groove is provided with a protruding part; the grooves of more than two die cores are enclosed to form a hub accommodating cavity with an opening at the bottom, and the size and the shape of the hub accommodating cavity are matched with the external contour of the hub; the lower die insert is arranged in the middle of an opening at the bottom of the propeller hub accommodating cavity, and the lower die insert and the propeller hub accommodating cavity define a cavity together; in the mold assembling process, firstly, more than two mold cores are respectively placed in the first accommodating groove, then the space for placing the preformed hub is reserved by separating the mold cores, the preformed hub is placed in the first accommodating groove to be buckled with the lower mold insert, after the grooves of the more than two mold cores are enclosed, the upper mold and the lower mold are closed to perform mold pressing operation, in the demolding process, the upper mold is firstly opened, the mold cores are separated to take out the molded hub, and the mold assembling device has the characteristics of accuracy in mold assembling, convenience in demolding and high product qualification rate.

Drawings

Fig. 1 is a perspective view of a hub forming die according to a first embodiment;

FIG. 2 is an exploded view of a hub forming mold according to the first embodiment;

FIG. 3 is a perspective view of a lower mold and a mold core assembly according to a first embodiment;

FIG. 4 is a perspective view of a lower mold according to the first embodiment;

FIG. 5 is a perspective view of an upper die of the first embodiment;

FIG. 6 is a perspective view of a mold insert assembly according to a first embodiment;

FIG. 7 is a perspective view of a mold insert according to the first embodiment;

FIG. 8 is a perspective view of a hub according to a first embodiment;

fig. 9 is a perspective view of a blade of the first embodiment.

In the figure: 10. a lower die; 11. a lower template; 12. a first accommodating groove; 121. a guide groove; 20. a mold core assembly; 21. a mold core; 211. a groove; 212. a protrusion; 213. a guide block; 214. knocking the groove; 22. a lower die insert; 30. an upper die; 31. mounting a template; 32. a second accommodating groove; 33. a through hole; 41. a guide post; 42. a guide sleeve; 100. a hub; 110. a hub body; 120. a recessed portion; 200. a paddle; 210. a paddle connecting portion; 220. a helical blade.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, 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 first embodiment is as follows:

referring to fig. 1-9, a hub forming mold for a split composite propeller includes:

the lower die comprises a lower die 10 and a lower die plate 11, wherein a first accommodating groove 12 is formed in the lower die plate 11;

the mold insert comprises a mold core assembly 20, wherein the mold core assembly 20 comprises more than two mold cores 21 and a cylindrical lower mold insert 22 which are respectively arranged in the first accommodating groove 12, and the more than two mold cores 21 can be detachably matched with each other; the inner side surface of the mold core 21 is provided with a groove 211, and the inner wall of the groove 211 is provided with a protrusion 212; the grooves 211 of more than two mold cores 21 are enclosed to form a hub accommodating cavity with an opening at the bottom, and the size and shape of the hub accommodating cavity are matched with the external profile of the hub 100; the lower die insert 22 is arranged in the middle of an opening at the bottom of the hub accommodating cavity, and the lower die insert 22 and the hub accommodating cavity define a cavity together;

go up mould 30, go up the mould and include cope match-plate pattern 31, be equipped with second holding tank 32 on the cope match-plate pattern 31, second holding tank 32 and first holding tank 12 enclose to close the back and form the chamber that holds that is used for accomodating mould benevolence subassembly 20.

In the preferred embodiment of the present invention, the number of the mold inserts 21 is three, the bottom wall of each mold insert 21 is provided with a guide block 213, the bottom wall of the first accommodating groove 12 is provided with a guide groove 121 corresponding to each guide block 213, and the guide blocks 213 are connected with the guide grooves 121 in a one-to-one sliding fit manner. By the design, the die core 21 can be guided and positioned better, so that the die core 21 is more smoothly matched with the guide groove 121 in a sliding manner, and the die core 21 is prevented from shaking in the forming process.

In the preferred embodiment of the present invention, the hub 100 includes a hub body 110 made of a composite material, three recesses 120 are evenly circumferentially disposed on an outer wall of the hub body 110, an inner bottom wall of each recess 120 is an inclined arc-shaped surface, and correspondingly, an outer surface of the protruding portion 212 of the mold core 21 is an inclined arc-shaped surface. In the practical application process, the blade 200 includes a blade body made of a composite material, and the blade body includes a blade connecting portion 210 and a helical blade 220 extending outward from one end of the blade connecting portion 210. The number of the blades is the same as that of the recesses 120, and the blades are arranged in a one-to-one correspondence manner; the blade connecting part 210 has a fitting surface fitted with the recess 120; the binding surface of the paddle is fixedly connected with the concave part through an adhesive layer. Specifically, the composite material may adopt a non-metal matrix synthetic resin; reinforcing materials: one of glass fiber, carbon fiber, boron fiber, aramid fiber, silicon carbide fiber and asbestos fiber; more specifically, the composite material can be carbon fiber prepreg cloth or carbon fiber prepreg. In the embodiment, the propeller hub is a cylinder with a mounting hole which is axially through arranged in the middle; correspondingly, the shape of the hub accommodating cavity is a cylinder.

In the preferred embodiment of the present invention, the included angle between every two adjacent guide grooves 121 is 120 °.

In the preferred embodiment of the present invention, the number of the mold core assemblies 20 is four, and the number of the accommodating cavities is four, and they are distributed in an array along the center line of the length direction or the width direction. By the design, the four hubs can be simultaneously molded, and the production efficiency is greatly improved.

In the preferred embodiment of the present invention, the lower mold and the upper mold are connected by the guide post 41 and the guide sleeve 42. Specifically, the number of the guide pillars 41 and the guide sleeves 42 is four, wherein the four guide pillars 41 are respectively mounted on the lower die, and the four guide sleeves 42 are respectively mounted on the upper die. Design like this, can guarantee that the paddle position when the punching press is accurate, can help the mould to open and shut the mould smoothly simultaneously, have the effect of protection mould, ensure that the mould is more smooth and accurate at during operation up-and-down motion to improve product precision and production efficiency.

In the preferred embodiment of the present invention, the top surface of the mold insert 21 is further formed with a knocking groove 214, and the upper plate 31 is formed with a through hole 33 corresponding to each mold insert. Since the molded product may be adhered to the core and the upper plate 31 during the heating of the mold, the groove 214 or the through hole 33 is knocked by a tool to be separated, thereby facilitating the demolding.

In the mould assembling process of this embodiment, place two above mould benevolence respectively in first holding tank earlier, then with them separately leave the space that the oar hub that supplies the preforming placed, place the oar hub of preforming in first holding tank with lower mould mold insert lock, enclose the recess of two above mould benevolence and close the back, will go up mould and lower mould compound die again and carry out the mould pressing operation, in the drawing of patterns process, open the mould earlier, can take out the oar hub after the mould pressing with mould benevolence separately.

Example two:

the embodiment has the characteristics that: the number of the die core components is two groups, which correspond to the two groups of the die core components, and the die core components are two groups of the accommodating cavities, which are distributed in an array along the central line of the length direction. The rest is the same as the first embodiment.

Example three:

the embodiment has the characteristics that: the number of the die core components is six, corresponding to the number of the die core components, the number of the accommodating cavities is six, and the die core components are distributed in an array along the central line of the length direction. The rest is the same as the first embodiment.

Other examples are as follows:

the number of the die core components is one group, three groups, five groups, seven groups or more, and the number of the accommodating cavities is one group, three groups, five groups, seven groups or more. The propeller hub is a cylinder with a mounting hole which is axially communicated in the middle; correspondingly, the shape of the hub accommodating cavity is a cylinder. While only certain features and embodiments of the application have been illustrated and described, many modifications and changes may occur to those skilled in the art (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the scope and spirit of the invention in the claims.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a propeller hub forming die of split type combined material screw which characterized in that includes:

2. The propeller hub forming die for the split type composite material propeller of claim 1, wherein the number of the die cores is three, a guide block is arranged on the bottom wall of each die core, a guide groove is arranged on the bottom wall of the first accommodating groove corresponding to each guide block, and the guide blocks are connected with the guide grooves in a one-to-one corresponding sliding fit manner.

3. The hub forming die for the split composite propeller of claim 2, wherein the hub comprises a hub body made of a composite material, three recesses are uniformly formed in the outer wall of the hub body in the circumferential direction, the inner bottom wall of each recess is an inclined arc-shaped surface, and the outer surface of the protruding portion of the mold core is an inclined arc-shaped surface.

4. The forming die for the hub of the split composite propeller of claim 3, wherein the hub is of a bullet-head type structure with a mounting hole axially penetrating in the middle, and comprises a bullet portion and a bullet portion with a gradually reduced diameter, wherein the bullet portion is formed by extending one end surface of the bullet portion outwards; correspondingly, the hub accommodating cavity is in a bullet-shaped structure.

5. The forming die for the hub of the split type composite propeller according to claim 4, wherein the hub is a cylinder with a mounting hole penetrating in the axial direction in the middle; correspondingly, the hub accommodating cavity is cylindrical.

6. The mold for molding a hub of a split composite propeller of claim 2, wherein an included angle between each adjacent two of the guide grooves is 120 °.

7. The mold for molding a hub of a split composite propeller according to claim 1, wherein the number of the mold insert assemblies is two or more, and the number of the accommodating cavities is two or more.

8. The propeller hub forming die for the split composite propeller as claimed in claim 1, wherein the number of the die core assemblies is two, four, six, eight or ten, and the number of the accommodating cavities is two, four, six, eight or ten, and the two, four, six, eight or ten are distributed in a mirror image manner along a center line in a length direction or a width direction.

9. The forming die for the hub of the split type composite propeller of claim 1, wherein the lower die and the upper die are connected in a matched manner through a guide pillar and a guide sleeve.

10. The forming die for the propeller hub of the split type composite propeller as claimed in claim 1, wherein a knocking groove is further formed in the top surface of the mold core, and a through hole is formed in the upper die plate at a position corresponding to each mold core.