CN206106211U - Polyurethane elastic foaming's mould and supporting device - Google Patents

Abstract

The utility model discloses a polyurethane elastic foaming's mould and supporting device, it includes a high -pressure foaming mold utensil, the foaming mold utensil is including the mould base, the locating pin, the mould chamber, pass through threaded connection between mould base and the locating pin, still be equipped with feed inlet and gas vent on the mould base, high pressure foaming mold utensil passes through the tube coupling with energy memory's one end, the energy memory other end is connected with filter equipment, be equipped with the stop valve between energy memory and the high -pressure foaming mold utensil, one side of high pressure foaming mold utensil is equipped with the trompil, the utility model discloses the beneficial effect that produces lies in the high pressure foaming having compensatied the low pressure foaming, and to have the foam inhomogeneous, and thermal insulation performance is poor, the problem of inefficiency, and the negative pressure foaming has reduced polyurethane materials's input amount and the time that the die cavity was filled to the material, the mobility of foam when the reinforcing is foamed, the polyurethane foam who obtains is with low costs, of high quality, the production efficiency height.

Description

A kind of mould and corollary apparatus of elastic polyurethane foaming

Technical field

This utility model is related to foam moulded from foam equipment technical field, a kind of mould of high pressure polyurethane flexible foaming and Its corresponding negative-pressure foaming device.

Background technology

Hard polyurethane foams moulded from foam production of the prior art is carried out under normal pressure.Double-component mixed liquor Body raw material is reacted in the die cavity, during foaming with volume gradually increase and discharge substantial amounts of gas and heat, mixed material The flow resistance of foaming mould intracavity gradually increases under the influence of by the increase of mould cavity pressure, the problem that this structure is present It is that the presence of foaming resistance can produce large effect to product quality, froth, have impact on the mobility of mixed material, thing occur Material lack of fill or foam density skewness Uniform phenomenons.The moulded from foam production of prior art in addition exists following several scarce Point：1st, polyurethane compound causes material viscosity to increase too fast due to itself there is too fast polymerization rate, material Mobility is substantially reduced.Gas can not arranged, the constricted flow in the die cavity, easily form surface or local cavity, the insulation to foam Property and outward appearance bring impact；2nd, the too fast polymerization rate of polyurethane materials, gas extraction system be not smooth, causes material not filling Wire drawing is had begun in the case of full die cavity, is caused and is not full of by foam in die cavity.

Utility model content

The purpose of this utility model is to provide the mould and corollary apparatus of a kind of elastic polyurethane foaming, simple structure, energy Polyurethane moulded from foam under negative pressure and high pressure conditions is realized enough, the standard for reducing urethane raw mobility is required, reduces poly- ammonia The input amount of ester material, shortens the time that material fills die cavity.

The mould and corollary apparatus of a kind of elastic polyurethane foaming, it is characterised in that it includes a high-pressure foam mould 1, The high-pressure foam mould 1 includes mold base 2, alignment pin 3, mold cavity, passes through screw thread between mold base 2 and alignment pin 3 Connection, be provided with the top of the frustum of a cone of the alignment pin 3 one along the central axial direction of alignment pin 3 step 7, the mold cavity point For two half modules 5, described two half modules 5 are respectively positioned on mold base 2, and charging aperture 4 and aerofluxuss are additionally provided with the mold base 2 Mouth 6, is provided with the buffer substrate tablet 19 of a circle at charging aperture 4, the both sides of the buffer substrate tablet 19 are respectively by a suspension 20 and 4 edge of charging aperture Connection, has three screwed holes 8, three screwed holes, 8 distribution triangular in shape on the mold base 2.

Further, the high-pressure foam mould 1 is connected by pipeline with one end of energy storage device 9, the energy storage device 9 The other end be connected with 10 one end of defecator, 10 other end of the defecator is connected with vacuum pump 11, the energy storage device 9 Pressure switch 16 is provided with, the energy storage device 9 is provided with stop valve 12, the cut-off with 1 connecting line of high-pressure foam mould Pipeline between valve 12 and high-pressure foam mould 1 is provided with electrically-controlled valve 13, choke valve 14, defecator 10, the high-pressure foam The side of mould 1 is provided with perforate 15, and the perforate 15 is provided with Antiseepage pieces 17 with line connection.

Further, the electrically-controlled valve 13 is controlled by electrical control cubicles 18.

Further, the top periphery of the high-pressure foam mould 1 is provided with the 3mm sealing strips for being higher by sealing surface on mould.

The beneficial effect that this utility model is produced：Polyurethane foam can be carried out using high-pressure foam equipment, be compensate for low Foam has that foam is uneven, and poor thermal insulation property, efficiency are low, are not suitable for the problem of automatic batch production, and combine remaining Part can realize the polyurethane moulded from foam under negative pressure state, and the standard for reducing urethane raw mobility is required, reduce poly- The input amount of urethane material, shortens the time that material fills die cavity, and the mobility of foam during enhanced foaming, foam density distribution are equal Even, abscess is thin, and intensity is high, and dimensionally stable is good, and the polyurethane foam low cost that obtains, quality are good, and production efficiency is high.

Description of the drawings

Fig. 1 is overall structure diagram of the present utility model；

Fig. 2 is this utility model mesohigh foaming mould structural representation；

Fig. 3 is this utility model mesohigh foaming mould side view；

Fig. 4 is mold cavity schematic diagram in this utility model.

Label in each accompanying drawing is expressed as follows：

1. high-pressure foam mould；2. mold base；3. alignment pin；4. charging aperture;

5. half module;6. air vent;7. step;8. screwed hole;

9. energy storage device;10. defecator；11. vacuum pumps;12. stop valves;

13. electrically-controlled valves;14. choke valves;15. perforates;16. pressure switches;

17. Antiseepage pieces;18. electrical control cubicles;19. buffer substrate tablets；20. suspensions.

Specific embodiment

The utility model will be further described with reference to the accompanying drawings and examples.

The mould and corollary apparatus of a kind of elastic polyurethane foaming, it is characterised in that it includes a high-pressure foam mould 1, The high-pressure foam mould 1 includes mold base 2, alignment pin 3, mold cavity, passes through screw thread between mold base 2 and alignment pin 3 Connection, 2 wall thickness 8mm of the mold base, the alignment pin 3 are made up of the screw rod and the frustum of a cone of 30mm length, the circular cone of alignment pin 3 The taper of platform be 8-10 between, be provided with the top of the frustum of a cone of the alignment pin 3 one along the central axial direction of alignment pin 3 step 7, the mold cavity is divided into two half modules 5, and described two half modules 5 are respectively positioned on mold base 2, are also set on the mold base 2 There are charging aperture 4 and air vent 6, at charging aperture 4, be provided with the buffer substrate tablet 19 of a circle, the both sides of the buffer substrate tablet 19 respectively pass through a suspension 20 are connected with 4 edge of charging aperture, have three screwed holes 8 on the mold base 2, three screwed holes, 8 distribution triangular in shape, Stability Analysis of Structures.

When being embodied as, the high-pressure foam mould 1 is connected by pipeline with one end of energy storage device 9, the energy storage dress Put 9 other end to be connected with 10 one end of defecator, 10 other end of the defecator is connected with vacuum pump 11, the energy storage dress Put 9 and be provided with pressure switch 16, the energy storage device 9 and 1 connecting line of high-pressure foam mould are provided with stop valve 12, described section Only the pipeline between valve 12 and high-pressure foam mould 1 is provided with electrically-controlled valve 13, choke valve 14, defecator 10, the high pressure The side of bubble mould 1 is provided with perforate 15, and the perforate 15 and line connection are provided with Antiseepage pieces 17, the effect of Antiseepage pieces 17 be When foaming is prevented in the case of not affecting aerofluxuss in place, foamed material is entered in pipeline.

When being embodied as, the electrically-controlled valve 13 is controlled by electrical control cubicles 18, the electrical control cubicles 18 be provided with pumping activate switch, Pumping shutdown switch, time controller.

When being embodied as, the top periphery of the high-pressure foam mould 1 is provided with the 3mm sealings for being higher by sealing surface on mould Charging aperture 4 is blocked before dnockout by bar with high-pressure foam machine gun head, is provided with seal washer, is formed after molding at foaming machine gun head Confined space, it is ensured that the parameter of production technology, product quality and qualification rate.

During polyurethane foam, expanded material is placed in mold base 2, its inner bag is stuck in into positioning in alignment pin 3.Respectively Using 1 or so half module of high-pressure foam mould, 5 fixed plate two ends, then using high-pressure foam equipment in 4 material feeding of charging aperture.

When being embodied as, electrical control cubicles 18 are provided with pumping and start, are evacuated shutdown switch, time controller, according in mould The size of different foaming plates, sets the time length of negative-pressure foaming, to adapt to different size by time controller Plate foaming, the electrically-controlled valve 13 being connected with electrical control cubicles 18 when reaching the foamed time of setting closed, completes to reach negative-pressure foaming Purpose.Vacuum pump 11 was evacuated within the set time, and the setting of pumpdown time is according to the volume of die cavity, vacuum during foaming The pumping speed of pump 11 is determined with the process conditions such as wire drawing time are foamed, it is ensured that the quality of negative-pressure foaming is reached within the time for arranging Require.

Above content is with reference to specific preferred implementation further detailed description of the utility model, it is impossible to Assert that this utility model is embodied as being confined to above-mentioned these explanations.For the common skill of this utility model art For art personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should It is considered as belonging to protection domain of the present utility model.

Claims (4)

1. a kind of elastic polyurethane foams mould and corollary apparatus, it is characterised in that it includes a high-pressure foam mould（1）, The high-pressure foam mould（1）Including mold base（2）, alignment pin（3）, mold cavity, mold base（2）With alignment pin（3）It Between be threaded connection, the alignment pin（3）The frustum of a cone at the top of be provided with one along alignment pin（3）Central axial direction step （7）, the mold cavity is divided into two half modules（5）, described two half modules（5）It is respectively positioned on mold base（2）On, the mold base （2）On be additionally provided with charging aperture（4）And air vent（6）, charging aperture（4）Place is provided with the buffer substrate tablet of a circle（19）, the buffer substrate tablet （19）Both sides respectively pass through a suspension（20）With charging aperture（4）Edge connects, the mold base（2）On have three screwed holes （8）, three screwed holes（8）Distribution triangular in shape.

2. a kind of elastic polyurethane according to claim 1 foams mould and corollary apparatus, it is characterised in that the height Foam mould（1）With energy storage device（9）One end by pipeline connect, the energy storage device（9）The other end with filter dress Put（10）One end connects, the defecator（10）The other end and vacuum pump（11）It is connected, the energy storage device（9）It is provided with pressure Power is switched（16）, the energy storage device（9）With high-pressure foam mould（1）Connecting line is provided with stop valve（12）, the cut-off Valve（12）With high-pressure foam mould（1）Between pipeline be provided with electrically-controlled valve（13）, choke valve（14）, defecator（10）, institute State high-pressure foam mould（1）Side be provided with perforate（15）, the perforate（15）Antiseepage pieces are provided with line connection（17）.

3. a kind of elastic polyurethane according to claim 2 foams mould and corollary apparatus, it is characterised in that the electricity Control valve（13）By electrical control cubicles（18）Control.

4. a kind of elastic polyurethane according to claim 1 foams mould and corollary apparatus, it is characterised in that the height Foam mould（1）Top periphery be provided with the 3mm sealing strips for being higher by sealing surface on mould.