CN2429317Y

CN2429317Y - Mixing device of high pressure foaming apparatus for polyurethanes with two densities

Info

Publication number: CN2429317Y
Application number: CN 00215362
Authority: CN
Inventors: 王贵仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-03
Filing date: 2000-07-03
Publication date: 2001-05-09
Anticipated expiration: 2010-07-03

Abstract

The utility model provides a mixing device of a high pressure foaming machine for dual density polyurethanes, which comprises a shell (1). A longitudinal column type piston (2) is arranged in the shell (1), and the improved part is that the utility model is provided with two pistons controlling nozzles to eject; a piston (3) controlling the nozzles to eject controls the closure and the ejection of a group of nozzles (4) and nozzles (5) which relatively eject mixing raw materials, and another piston (6) controlling the nozzles to eject controls the closure and the ejection of another group of nozzles (7) and nozzles (8) which relatively eject the mixing raw materials. The action consistency of each group of two nozzles which relatively eject the mixing raw materials is good, and alpha and omega phenomenon does not occur; raw materials are uniformly mixed twice, and product quality is good.

Description

The mixing arrangement of Duel-density polyurethane high pressure foaming machine

The utility model relates to a kind of production equipment of making polyurethane products, the particularly mixing arrangement of Duel-density polyurethane high pressure foaming machine.

The Duel-density polyurethane product is that the zones of different at same product has two kinds of different densities with different aspects, thereby have two kinds of different consistency and elasticities, as the Duel-density polyurethane bicycle tyre that need not inflate, its internal layer near rim partly needs hardness bigger, its outer rim needs hardness less, the mixing arrangement of Duel-density polyurethane high pressure foaming machine is an important device of making the Duel-density polyurethane high pressure foaming machine of Duel-density polyurethane goods, and the reasonability of its structure plays a key effect to the quality of product.At present in the mixing arrangement of known Duel-density polyurethane high pressure foaming machine, it is more advanced that the mixing arrangement technical merit of the Duel-density polyurethane high pressure foaming machine that Nei Ji company (Henneeke) produces is enjoyed by Germany, the cross section of its structure as shown in Figure 3, it comprises housing, has a vertical pillar piston in the housing, have four raw material nozzles on the plunger shaft wall of pillar piston, two relative nozzles spray mixing relatively, and each nozzle is sprayed by a piston control and closes.The weak point of this structure is that the injection of spraying the nozzle that mixes relatively is difficult to reach highly consistent with closing motion, there is phenomenon at the whole story, influence the quality of product, its another weak point is that raw material can only mix in the plunger shaft of vertical pillar piston, mixing chamber is bigger, can only carry out mixed once, mix the inhomogeneous quality that also influences product.

The purpose of this utility model is to provide a kind of mixing arrangement of Duel-density polyurethane high pressure foaming machine, to overcome the deficiency of known technology.

The utility model is achieved in that a kind of mixing arrangement of Duel-density polyurethane high pressure foaming machine, it comprises housing (1), has a vertical pillar piston (2) in the housing (1), its improvements are to have the piston that two control nozzles spray, one group of piston (3) control that control nozzle sprays is sprayed the injection of the nozzle (4) of mixed material and nozzle (5) relatively and is closed, piston (6) that another control nozzle sprays control another group relatively nozzle (7) of injection mixed material and nozzle (8) injection and close.

The mixing arrangement of the utility model Duel-density polyurethane high pressure foaming machine, can be when spraying admixture, the plunger shaft and the vertical pillar piston (2) that are in the piston of the control nozzle injection of spraying admixture form a restriction (9), and the piston end face of another control nozzle injection contacts with the cylinder of vertical pillar piston (2).

The mixing arrangement of the utility model Duel-density polyurethane high pressure foaming machine, the end face that can be two controls nozzle spritzpistoles (3) and pistons (6) are the curved surfaces that the cylinder with vertical pillar piston (2) matches.

On the mixing arrangement of the utility model Duel-density polyurethane high pressure foaming machine can be a nozzle (4) the relative plunger shaft wall that is in piston (3) with spray (5), nozzle (7) is relative with nozzle (8) to be on the plunger shaft wall of piston (6).

The mixing arrangement of the utility model Duel-density polyurethane high pressure foaming machine, can be to be in right stop washing away process piston (3), piston (6) is in left stop, vertically pillar piston (2) is in top dead centre, its lower surface is positioned at the top of piston (3) and piston (6), and vertically pillar piston (2) comes downwards to the end face that lower dead center is washed away its plunger shaft and piston (3) and piston (6).

The mixing arrangement of the utility model Duel-density polyurethane high pressure foaming machine, two nozzles that spray mixed material relatively spray and the closing motion high conformity, there is not phenomenon at the whole story, raw material is carrying out the mixing second time through the process of restriction (9), that mixes is more even, the matter product of product well, the cylinder of the piston (3) that two control nozzles spray and the end face of piston (6) and vertical pillar piston (7) favourable the washing away that match, that washes away is more thorough.

Fig. 1: the master of a kind of structure of mixing arrangement of the utility model Duel-density polyurethane high pressure foaming machine looks cutaway view.

The A-A cutaway view of Fig. 2: Fig. 1.

Fig. 3: the schematic cross-sectional view of the Duel-density polyurethane high-pressure foam of prior art.

The utility model is described in further detail in conjunction with the embodiments with reference to accompanying drawing.

Embodiment 1, Fig. 1 and Fig. 2 have provided a kind of concrete structure of the utility model, consult Fig. 1 and Fig. 2, a kind of mixing arrangement of Duel-density polyurethane high pressure foaming machine, it comprises housing (1), has a vertical pillar piston (2) in the housing (1), has the piston that two control nozzles spray, piston (3) control that control nozzle sprays is sprayed the injection of the nozzle (4) that mixes raw material and nozzle (5) for one group relatively and is closed, piston (6) that another control nozzle sprays control another group relatively nozzle (7) of injection mixed material and nozzle (8) injection and close.Two nozzles that spray relatively spray and the closing motion high conformity, do not have phenomenon at the whole story, help improving the quality of products.When spraying admixture, the plunger shaft and the vertical pillar piston (2) that are in the piston of the control nozzle injection of spraying admixture form a restriction (9), and the piston end face of another control nozzle injection contacts with the cylinder of vertical pillar piston (2).Raw material is carrying out the mixing second time through the process of restriction (9), mixing ratio is more even, and the quality of product is good.The piston (3) that two control nozzles spray and the end face of piston (6) are the curved surfaces that matches of the cylinder with vertical pillar piston (2).Like this process of washing away wash away thoroughly.Nozzle (4) is relative with nozzle (5) to be on the plunger shaft wall of piston (3), and nozzle (7) is relative with nozzle (8) to be on the plunger shaft wall of piston (6).In the article of manufacture process, piston (3) is in left stop, piston (6) is located left stop, the relative raw material that sprays with nozzle (5) of nozzle (4) mixes in the plunger shaft of piston (3), locating to carry out second mixing by restriction (9), mixed raw material enters mould through the plunger shaft of vertical pillar piston (2), generate the zone or the aspect of a kind of density of goods, piston (3) and piston (6) move to right stop, the relative raw material that sprays with nozzle (8) of nozzle (7) mixes, and mixed raw material enters zone or the aspect that mould generates the another kind of density of goods.Be in right stop washing away process piston (3), piston (6) is located left stop, vertically pillar piston (2) is located top dead centre, and its lower surface is positioned at the top of piston (3) and piston (6), vertically the descending end face that washes away its plunger shaft and piston (3) and piston (6) of pillar piston (2).Because there do not have the dead angle to wash away to be more thorough.

Claims

1, a kind of mixing arrangement of Duel-density polyurethane high pressure foaming machine, it comprises housing (1), has a vertical pillar piston (2) in the housing (1), it is characterized in that having the piston that two control nozzles spray, one group of piston (3) control that control nozzle sprays is sprayed the injection of the nozzle (4) of mixed material and nozzle (5) relatively and is closed, piston (6) that another control nozzle sprays control another group relatively nozzle (7) of injection mixed material and nozzle (8) injection and close.

2, Duel-density polyurethane high pressure foaming machine mixing arrangement according to claim 1, it is characterized in that when spraying admixture, the plunger shaft and the vertical pillar piston (2) that are in the piston of the control nozzle injection of spraying admixture form a restriction (9), and the piston end face of another control nozzle injection contacts with the cylinder of vertical pillar piston (2).

3, the mixing arrangement of Duel-density polyurethane high pressure foaming machine according to claim 1 and 2, the end face that it is characterized in that piston (3) that two control nozzles spray and piston (6) are the curved surfaces that the cylinder with vertical pillar piston (2) matches.

4, the mixing arrangement of Duel-density polyurethane high pressure foaming machine according to claim 3, it is characterized in that on the relative plunger shaft wall that is in piston (3) of nozzle (4) that nozzle (7) is relative with nozzle (8) to be on the plunger shaft wall of piston (6) with nozzle (5).

5, the mixing arrangement of Duel-density polyurethane high pressure foaming machine according to claim 4, it is characterized in that being in right stop washing away process piston (3), piston (6) is in left stop, vertically pillar piston (2) is in top dead centre, its lower surface is positioned at the top of piston (3) and piston (6), and vertically pillar piston (2) comes downwards to the end face that lower dead center is washed away its plunger shaft and piston (3) and piston (6).