CN209869213U

CN209869213U - Mould for pouring polyurethane product

Info

Publication number: CN209869213U
Application number: CN201920104953.0U
Authority: CN
Inventors: 肖树德; 张一鹏
Original assignee: Ehc (shanghai) Co Ltd Engineering Plastics
Current assignee: Ehc (shanghai) Co Ltd Engineering Plastics
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2019-12-31
Anticipated expiration: 2029-01-22

Abstract

The utility model discloses a pouring polyurethane goods mould relates to polyurethane goods mould field, for current pouring polyurethane goods mould staff's complex operation among the solution prior art, goods need car processing, and processing back goods drawing of patterns difficulty causes goods scratch, the bad problem such as deformation easily. One side of first mould is provided with the second mould, the centre of first mould opposite side is provided with first valve, the centre of second mould opposite side is provided with second valve, fixed establishment is installed to the centre of first mould and second mould front end, the both ends of second mould side all are provided with first circular arc type boss, the one end of first circular arc type boss is provided with first location platform, the both ends of first mould side all are provided with second circular arc type boss, the one end of second circular arc type boss is provided with second location platform, the centre of first mould side is provided with the bracing piece.

Description

Mould for pouring polyurethane product

Technical Field

The utility model relates to a polyurethane goods mould field specifically is a pouring polyurethane goods mould.

Background

The method is used for processing a CPU (cast polyurethane) elastomer product without opening a mould, and for the frequently adopted normal pressure casting, such as normal pressure open casting molding, the strength of a mould material is not a key consideration problem because external pressurization is not needed, and the mould material can be used as the mould material as long as the dimension is stable and the heat resistance is proper. However, in industrial production, only a metal mold is most suitable from the viewpoint of durability. For compression molding, the mold used must be made of metal. The traditional CPU elastomer product mould only has simple cavity, positioning and pouring drainage inclined planes. Demoulding is difficult after the vulcanization of the product is finished, a high-pressure air gun is needed to blow a parting surface, and the product is taken out of the mould by assistance of tools such as calipers. Some products need special-shaped structures (such as side arc grooves), the traditional die cannot make the required special-shaped structures, and only the products can be machined again to obtain the required products. In conclusion, the production process of the traditional CPU elastomer product mold is tedious in process procedure, complex in personnel operation and long in working hours, thereby affecting productivity. The utility model discloses a CPU elastomer goods mould, more traditional mould has two cavitys to constitute, and two cavitys pass through door bolt formula elbow clamps carry out the compound die fixed, ensure that the compound die is inseparable, prevent liquid PU material seepage during the pouring. The air valve is arranged in the die cavity, and when the die is demolded, the air valve is only connected with the high-pressure air gun, the die is automatically separated, and the product falls off from the die. The die cavity developed by the design is of a special-shaped structure (a side arc-shaped groove) required by a product, and the product does not need rear-end turning, so that the labor and processing cost is reduced.

However, the existing cast polyurethane product mold is complex in operation, the product needs to be lathed, the product is difficult to demould after being machined, the product is easy to scratch, deform and the like, in addition, the number of machining processes is large, the working hours are long, and the labor and machining cost is high; therefore, the market urgently needs to develop a mould for pouring polyurethane products to help people to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pouring polyurethane goods mould to solve the current pouring polyurethane goods mould staff complex operation that provides in the above-mentioned background art, the goods needs car processing, and processing back goods drawing of patterns difficulty causes goods scratch, bad problem such as deformation easily.

In order to achieve the above object, the utility model provides a following technical scheme: a mould for pouring polyurethane products comprises a first mould, wherein a second mould is arranged on one side of the first mould, a first air valve is arranged in the middle of the other side of the first mould, a second air valve is arranged in the middle of the other side of the second mould, a fixing mechanism is arranged between the front ends of the first mould and the second mould, first arc bosses are arranged at two ends of the side surface of the second mould, a first positioning table is arranged at one end of each first arc boss, second arc bosses are arranged at two ends of the side surface of the first mould, a second positioning table is arranged at one end of each second arc boss, a support rod is arranged in the middle of the side surface of the first mould, a fixing lug is arranged on each fixing mechanism, a fixing U-shaped rod is arranged at the lower end of each fixing lug, and a connecting lug is arranged at the lower end of each fixing U-shaped rod, the lower end of the connecting convex block is provided with a door bolt type elbow clamp, and a rotating shaft is arranged in the connecting convex block.

Preferably, a boss is arranged at the front end of the first mold, a groove is arranged at the front end of the second mold, the groove is connected with the boss in an occlusion mode, the height of the first mold is the same as that of the second mold, and the first valve and the second valve are both of hollow structures.

Preferably, the fixing lug is connected with the first die in a hot melting mode, and the connecting lug is connected with the second die in a hot melting mode.

Preferably, the first mold and the second mold are symmetrically arranged, the first arc-shaped boss and the second mold are arranged to be of an integrated structure, the first arc-shaped boss is provided with two, the first positioning table is provided with two, and the first positioning table and the second mold are arranged to be of an integrated structure.

Preferably, the second circular arc boss and the first mold are arranged to be of an integrated structure, the second circular arc boss is provided with two, the second positioning table is provided with two, and the second positioning table and the first mold are arranged to be of an integrated structure.

Preferably, the fixed lug is attached to the fixed U-shaped rod, through holes penetrating through the fixed U-shaped rod are formed in the two ends of the rotating shaft, the fixed U-shaped rod penetrates through the through holes, and the rotating shaft is connected with the lug in a penetrating mode.

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

1. the utility model has the advantages that through the arrangement of the fixing mechanism, the fixing mechanism is easy to open and close, and when pouring is carried out, the operation of staff is convenient, thus greatly improving the production efficiency;

2. the utility model has the advantages that the polyurethane product is formed at one time through the arrangement of the first mould and the second mould, and the turning operation is not needed, thereby avoiding the bad products caused by the turning process and reducing the production cost;

3. the utility model has the advantages that through the arrangement of the first valve and the second valve, the first valve and the second valve are operated by air before demoulding, the demoulding of the polyurethane product is easy and simple, and the qualification rate of the finished product is high;

4. the utility model discloses a well process flow reduces, and manual work and processing cost are showing and are reducing.

Drawings

FIG. 1 is a front view of a mold for casting polyurethane articles according to the present invention;

FIG. 2 is a cross-sectional view of a mold for casting a polyurethane article according to the present invention;

fig. 3 is a schematic structural diagram of the fixing mechanism of the present invention.

In the figure: 1. a first mold; 2. a second mold; 3. a first valve; 4. a second valve; 5. a toggle-type elbow clip; 6. a fixing mechanism; 7. a rotating shaft; 8. a first arc-shaped boss; 9. a second arc-shaped boss; 10. a first positioning table; 11. a second positioning table; 12. a support bar; 13. fixing the bump; 14. fixing the U-shaped rod; 15. and connecting the bumps.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1-3, the present invention provides an embodiment: a casting polyurethane product mould comprises a first mould 1, a second mould 2 is arranged on one side of the first mould 1, the first mould 1 and the second mould 2 enable a polyurethane product to be formed in one step without turning operation, poor products caused by turning operation are avoided, the production cost is reduced, a first air valve 3 is arranged in the middle of the other side of the first mould 1, a second air valve 4 is arranged in the middle of the other side of the second mould 2, the first air valve 3 and the second air valve 4 advance air-advancing operation before demoulding is carried out, the polyurethane product is easy and simple to demould, the qualified rate of finished products is high, an air gun blows air to the first air valve 3 and the second air valve 4, air enters between the polyurethane product and the first mould 1 and the second mould 2, the first mould 1 and the second mould 2 are separated, the polyurethane product falls off, a fixing mechanism 6 is arranged in the middle of the front ends of the first mould 1 and the second mould 2, when pouring, it is convenient for the staff to open and close, production efficiency is greatly improved, both ends of the side of the second mold 2 are provided with first arc-shaped bosses 8, one ends of the first arc-shaped bosses 8 are provided with first positioning tables 10, both ends of the side of the first mold 1 are provided with second arc-shaped bosses 9, one ends of the second arc-shaped bosses 9 are provided with second positioning tables 11, the middle of the side of the first mold 1 is provided with a supporting rod 12, a fixing lug 13 is arranged on a fixing mechanism 6, the lower end of the fixing lug 13 is provided with a fixing U-shaped rod 14, the lower end of the fixing U-shaped rod 14 is provided with a connecting lug 15, the lower end of the connecting lug 15 is provided with a door bolt type elbow clamp 5, a rotating shaft 7 is arranged in the connecting lug 15, rotation is carried out, and opening and closing of the first mold 1 and the second mold 2.

Further, the front end of the first mold 1 is provided with a boss, the front end of the second mold 2 is provided with a groove, the groove is meshed with the boss and connected more tightly, the height of the first mold 1 is the same as that of the second mold 2, the first air valve 3 and the second air valve 4 are both arranged to be hollow structures, and an air gun blows the first air valve 3 and the second air valve 4 before demolding, so that a product subjected to demolding is not easy to damage.

Further, the fixing bump 13 is connected with the first mold 1 by hot melting, and the connecting bump 15 is connected with the second mold 2 by hot melting.

Further, first mould 1 and second mould 2 symmetry set up, and first circular arc type boss 8 sets up to the integral type structure with second mould 2, and first circular arc type boss 8 is provided with two, and first locating platform 10 sets up to the integral type structure with second mould 2.

Further, second circular arc boss 9 sets up to the integral type structure with first mould 1, and second circular arc boss 9 is provided with two, and second location platform 11 sets up to the integral type structure with first mould 1, and the cavity between first mould 1 and the second mould 2 needs to pour into mixture such as PU prepolymer and chain extender into, sets up to the integral type structure and can increase the life of mould.

Further, fixed lug 13 and the laminating of fixed U type pole 14, the both ends of pivot 7 all are provided with the through-hole that runs through, and fixed U type pole 14 passes through the through-hole, pivot 7 through connection lug 15.

The working principle is as follows: when in use, the first die 1 and the second die 2 are heated to 110 ℃, the release agent is sprayed on the cavities of the first die 1 and the second die 2, impurities attached to the inner surfaces of the first die 1 and the second die 2 are cleaned by an air gun, the metal insert is positioned and fixed at the position of the first die 1, after the first die 1 and the second die 2 are closed, the fixing mechanism 6 is fixed, the fixing U-shaped rod 14 is sleeved on the fixing lug 13 and locked by the bolt type toggle clamp 5, the fixing mechanism 6 is tightly fixed, the mixture of the PU prepolymer, the chain extender and the like is injected into the cavity between the first die 1 and the second die 2, the temperature is heated to 110 ℃ for vulcanization for 10 minutes, the air gun blows the first air valve 3 and the second air valve 4, air enters between the polyurethane product and the first die 1 and the second die 2, the first die 1 and the second die 2 are separated, and the polyurethane product falls off, the polyurethane article is post-cured.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Claims

1. A mould for casting polyurethane articles, comprising a first mould (1), characterized in that: a second mold (2) is arranged on one side of the first mold (1), a first air valve (3) is arranged in the middle of the other side of the first mold (1), a second air valve (4) is arranged in the middle of the other side of the second mold (2), a fixing mechanism (6) is installed in the middle of the front ends of the first mold (1) and the second mold (2), first arc bosses (8) are arranged at two ends of the side surface of the second mold (2), a first positioning table (10) is arranged at one end of each first arc boss (8), second arc bosses (9) are arranged at two ends of the side surface of the first mold (1), a second positioning table (11) is arranged at one end of each second arc boss (9), a support rod (12) is arranged in the middle of the side surface of the first mold (1), and a fixing lug (13) is arranged on the fixing mechanism (6), the lower extreme of fixed lug (13) is provided with fixed U type pole (14), the lower extreme of fixed U type pole (14) is provided with connection lug (15), the lower extreme of connection lug (15) is provided with keeper formula elbow clamp (5), be provided with pivot (7) in the connection lug (15).

2. A cast polyurethane article mold as in claim 1, wherein: the front end of the first mold (1) is provided with a boss, the front end of the second mold (2) is provided with a groove, the groove is connected with the boss in an occlusion mode, the height of the first mold (1) is the same as that of the second mold (2), and the first air valve (3) and the second air valve (4) are both of a hollow structure.

3. A cast polyurethane article mold as in claim 1, wherein: the fixed lug (13) is in hot-melt connection with the first die (1), and the connecting lug (15) is in hot-melt connection with the second die (2).

4. A cast polyurethane article mold as in claim 1, wherein: first mould (1) and second mould (2) symmetry set up, first circular arc type boss (8) set up to the integral type structure with second mould (2), first circular arc type boss (8) are provided with two, first location platform (10) set up to the integral type structure with second mould (2).

5. A cast polyurethane article mold as in claim 1, wherein: second circular arc type boss (9) set up to integral type structure with first mould (1), second circular arc type boss (9) are provided with two, second location platform (11) set up to integral type structure with first mould (1).

6. A cast polyurethane article mold as in claim 1, wherein: fixed lug (13) and the laminating of fixed U type pole (14), the both ends of pivot (7) all are provided with the through-hole that runs through, and fixed U type pole (14) pass the through-hole, pivot (7) through connection lug (15).