CN219466817U - Multi-section type plastic mould for wax products - Google Patents

Abstract

The utility model discloses a multi-section type plastic mold for wax products, which comprises an upper mold, a lower mold, a middle mold and a fixing mechanism, wherein the upper end and the lower end of the middle mold are respectively connected with the upper mold and the lower mold through the fixing mechanism, the upper mold, the lower mold and the middle mold comprise a shell and an inner mold arranged on the inner side of the shell, the bottom of the upper mold, the top end of the lower mold and the upper end and the lower end of the middle mold are respectively provided with an opening, the inner mold extends outwards from the opening to form a protruding mold, the fixing mechanism comprises two half frames, clamping grooves and fixing lugs, the two half frames are combined to form a closed-loop structure, the outer sides of the half frames are arranged on the outer sides of the protruding mold, and the outer sides of the protruding mold are provided with lugs and clamping grooves. The friction resistance between a finished product and the die can be reduced when the die is demolded by utilizing the die with the sectional structure design, so that the effect of convenient demolding is realized; the exhaust hole with the spiral structural design can prevent injection molding liquid leakage while exhausting.

Description

Multi-section type plastic mould for wax products

Technical Field

The utility model relates to the technical field of injection molds, in particular to a multi-section type plastic mold for wax products.

Background

Injection molding is a method for producing and modeling industrial products, and the products are usually made of rubber injection molding and plastic injection molding, and are injection molded by an injection molding machine; injection molding is performed mainly by an injection molding machine and a mold. The mould is a tool for making the blank into a workpiece with a specific shape and size under the action of external force, and the processing of the appearance of the article is realized mainly through the change of the physical state of the material. The injection mold is a tool for producing plastic products, also a tool for endowing the plastic products with complete structures and precise dimensions, and can be used for mass production of parts with complex shapes through injection molding.

The traditional mould is difficult to demould after the mould is finished, the root cause is that the gap between the finished product and the mould is small, no air exists, the friction resistance between the finished product and the mould is too large, the mould is difficult to separate, the mould is forcedly ejected out by adopting a hydraulic mechanism or a spring mechanism in the prior art, but the damage of the wax product is easily caused when the mould faces the wax product, and the production efficiency is reduced.

Disclosure of Invention

The present utility model is directed to a multi-stage molding die for wax articles, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a multistage mould of wax product, includes mould, bed die, middle mould and fixed establishment, the upper and lower both ends of middle mould are connected respectively through fixed establishment and are gone up mould and bed die, go up mould, bed die and middle mould and all include the shell and establish the centre form at the shell inboard, the bottom of going up the mould, the top of bed die and the upper and lower both ends of middle mould all set up the opening, the centre form by the outside extension of opening part and form protruding mould, fixed establishment includes two half frames, draw-in groove, fixed ear, two half frame combination is closed loop structure, half frame sets up the outside with protruding mould, and the outside of protruding mould sets up lug and draw-in groove joint, the fixed ear sets up the outside at half frame.

Further, the fixing lugs are provided with transverse fixing holes and longitudinal fixing holes, the two half frames are fixed through the transverse fixing holes and the bolts, and the upper die, the lower die and the middle die are fixed through the longitudinal fixing holes and the bolts.

Further, the top of going up the mould is provided with hole of moulding plastics and exhaust hole, the inside heliciform exhaust passage that sets up of exhaust hole, heliciform exhaust passage can be so that avoid liquid paraffin to be discharged from the exhaust hole in the exhaust of internal air of effectual assurance.

Further, the shell of the middle die is provided with convex engaging teeth, the shells of the upper die and the lower die are provided with engaging grooves corresponding to the engaging teeth, and the upper die, the lower die and the shell of the middle die are connected more stably under the cooperation of the engaging teeth and the engaging grooves similarly to the engagement of gears, so that the positions of the upper die, the lower die and the shell of the middle die are prevented from being deviated.

Further, the engagement teeth are equidistantly arranged with the engagement grooves and form a closed-loop structure.

Further, be equipped with the intermediate layer between shell and the centre form, set up the heating wire in the intermediate layer, the heating wire is through the wire external power source of inside setting, can make the inside certain temperature of keeping of mould through the heating of heating wire, when moulding like this, the paraffin can not quick cooling in the mould inside, can effectually prevent the quick solidification of paraffin, guarantees that the paraffin can be smooth flow to each corner of the inside of mould.

Compared with the prior art, the utility model has the beneficial effects that:

the friction resistance between a finished product and the die can be reduced when the die is demolded by utilizing the die with the sectional structure design, so that the effect of convenient demolding is realized;

the exhaust hole with the spiral structure design can prevent injection molding liquid from leaking while exhausting;

the inside of the die is kept at a certain temperature by heating the electric heating wire, so that paraffin can not be rapidly cooled in the die during molding, and the paraffin can be effectively prevented from being rapidly solidified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the biting teeth of the present utility model;

fig. 3 is a schematic view of the structure of the engagement groove of the present utility model.

In the figure: 1. an upper die; 2. a lower die; 3. an intermediate mold; 4. a fixing mechanism; 401. a half frame; 402. a clamping groove; 403. a fixed ear; 5. a housing; 6. an inner mold; 7. protruding the mould; 8, transverse fixing holes; 9. a longitudinal fixing hole; 10. injection molding holes; 11. an exhaust hole; 12. a bite tooth; 13. engaging the slot.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in the embodiment of the present utility model, a multi-stage molding mold for wax products includes an upper mold 1, a lower mold 2, a middle mold 3 and a fixing mechanism 4, wherein the upper and lower ends of the middle mold 3 are respectively connected with the upper mold 1 and the lower mold 3 through the fixing mechanism 4, the upper mold 1, the lower mold 2 and the middle mold 3 each include a housing 5 and an inner mold 6 disposed inside the housing 5, the bottom of the upper mold 1, the top end of the lower mold 2 and the upper and lower ends of the middle mold 3 are both provided with openings, the inner mold 6 is extended outwards from the openings and forms a protruding mold 7, the inner mold 6 and the protruding mold 7 are both made of high temperature resistant soft materials, so that during demolding, the protruding mold 7 can be rolled outwards to form a gap between the finished product and the mold, thereby facilitating air entry, and achieving the effect of facilitating demolding, the fixing mechanism 4 includes two half frames 401, a clamping groove 402, and a fixing lug 403, the two half frames 401 are combined to form a structure, the half frames 401 are disposed with the protruding mold 401 and the protruding mold 7, and the protruding mold 7 are disposed outside the corresponding to the clamping groove 3, and the gap between the two half frames is more than the inner mold 3 is required to be more easily divided, and the gap is more than the gap is required to be formed between the two half frames 3 and the inner mold is required to be fixed.

Examples:

as shown in fig. 1-3, the fixing lugs 403 are provided with a transverse fixing hole 8 and a longitudinal fixing hole 9, the two half frames 401 are fixed by the transverse fixing hole 8 in cooperation with bolts, and the upper die 1, the lower die 2 and the middle die 3 are fixed by the longitudinal fixing hole 9 in cooperation with bolts or hydraulic telescopic rods;

the top end of the upper die 1 is provided with an injection hole 10 and an exhaust hole 11, a spiral exhaust channel is arranged in the exhaust hole 11, the spiral exhaust channel can effectively ensure the exhaust of internal air while avoiding the exhaust of liquid paraffin from the exhaust hole 11, and a one-way exhaust valve is arranged in the exhaust hole 11 to prevent external air from entering the die;

the shell 5 of the middle die 3 is provided with convex engaging teeth 12, the shells 5 of the upper die 1 and the lower die 2 are provided with engaging grooves 13 corresponding to the engaging teeth 12, and the upper die 1, the lower die 2 and the shell 5 of the middle die 3 are connected more stably under the cooperation of the engaging teeth 12 and the engaging grooves 13 to prevent the positions of the engaging teeth 12 and the engaging grooves 13 from being deviated, the engaging teeth 12 and the engaging grooves 13 are equidistantly arranged to form a closed-loop structure, and the closed-loop structure can be annular, circular, rectangular, square, elliptic or irregular;

an interlayer is arranged between the shell 5 and the inner die 6, an electric heating wire is arranged in the interlayer, the electric heating wire is externally connected with a power supply through a wire arranged in the interlayer, and the inside of the die can be kept at a certain temperature through the heating of the electric heating wire, so that paraffin can not be rapidly cooled in the die during molding, the paraffin can be effectively prevented from being rapidly solidified, and the paraffin can be smoothly flowed to each corner in the die.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A multi-stage molding die for wax articles, characterized in that: including last mould (1), bed die (2), middle mould (3) and fixed establishment (4), the upper and lower both ends of middle mould (3) are connected respectively through fixed establishment (4) and are gone up mould (1) and bed die (2), go up mould (1), bed die (2) and middle mould (3) and all include shell (5) and establish centre form (6) inboard in shell (5), the bottom of going up mould (1), the top of bed die (2) and both ends all set up the opening about middle mould (3), centre form (6) are outwards extended and are formed protruding mould (7) by the opening part, fixed establishment (4) are including two half frame (401), draw-in groove (402), fixed ear (403), two half frame (401) combination are closed loop construction, half frame (401) set up in the outside of protruding mould (7), and the outside of protruding mould (7) sets up lug and draw-in groove (402) joint, fixed ear (403) set up in the outside of half frame (401).

2. A multi-stage molding die for wax articles as in claim 1, wherein: the fixing lug (403) is provided with a transverse fixing hole (8) and a longitudinal fixing hole (9), the two half frames (401) are fixed through the transverse fixing hole (8) and the matching bolt, and the upper die (1), the lower die (2) and the middle die (3) are fixed through the longitudinal fixing hole (9) and the matching bolt.

3. A multi-stage molding die for wax articles as in claim 1, wherein: the top of the upper die (1) is provided with an injection molding hole (10) and an exhaust hole (11), and a spiral exhaust channel is arranged in the exhaust hole (11).

4. A multi-stage molding die for wax articles as in claim 1, wherein: convex engaging teeth (12) are arranged on the outer shell (5) of the middle die (3), and engaging grooves (13) corresponding to the engaging teeth (12) are formed in the outer shells (5) of the upper die (1) and the lower die (2).

5. A multi-stage molding die for wax articles as in claim 4, wherein: the engagement teeth (12) are equidistantly arranged with the engagement grooves (13) and form a closed loop structure.

6. A multi-stage molding die for wax articles as in claim 1, wherein: an interlayer is arranged between the shell (5) and the inner die (6), and an electric heating wire is arranged in the interlayer and externally connected with a power supply through a wire arranged in the interlayer.