CN211105183U

CN211105183U - Improved foam self-skinning device

Info

Publication number: CN211105183U
Application number: CN201921604245.XU
Authority: CN
Inventors: 郑晓菲
Original assignee: Fackel Machinery Fujian Co Ltd
Current assignee: Fackel Machinery Fujian Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-07-28
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses an improved generation foam is from skinning device, including the foaming mould, the foaming mould has the steam inlet port, the steam inlet port sets the air inlet pipeline, set the air-vent valve on the air inlet pipeline. The problem of because of the insufficient foam foaming influences skinning quality and efficiency is solved.

Description

Improved foam self-skinning device

Technical Field

The utility model relates to a foam processing technology field, concretely relates to improved generation foam is from skinning device.

Background

The self-skinning foam plastic is also called integral skin molding foam, forms a solid skin on the surface of the foam by one time when the foaming component foams, and is widely applied to the fields of automobile steering wheels, armrests, bicycle saddles, headrests and the like with the advantages of tear resistance, high strength, high toughness and the like. The firm outer skin is mainly generated due to physical action, bubbles generated by foam and accumulated heat are collided with the low-temperature mold wall, and the bubbles are broken because heat is discharged, so that the bubble wall is pressed into the firm outer skin until the input heat and the output heat are balanced.

The existing self-skinning process only carries out one-time foaming, so that the problems of uneven and insufficient foaming are easily caused, and the phenomenon of foam collapse is caused, so that the later-stage cracking and pressing are influenced, and the skinning forming quality is poor and the efficiency is low. Therefore, the present application discloses a new self-skinning process, and an improved foam self-skinning apparatus suitable for the self-skinning process, which is produced by the present application.

Disclosure of Invention

The main object of the utility model is to provide an improved generation foam is from skinning device solves and influences the problem of skinning quality and efficiency because of the foam foaming is not enough.

In order to achieve the above purpose, the solution of the present invention is:

the foam self-skinning device comprises a foaming mold, wherein the foaming mold is provided with a steam inlet, the steam inlet is provided with an air inlet pipeline, and the air inlet pipeline is provided with a pressure regulating valve.

Further, the foaming mould comprises a first mould plate and a second mould plate which are matched with each other; the foaming mould is also provided with a steam outlet; the steam inlet comprises a first inlet arranged on the first template and a second inlet arranged on the second template; the steam outlet comprises a first outlet arranged on the first template and a second outlet arranged on the second template; the air inlet pipeline comprises a first air inlet pipe connected with the first inlet port and a second air inlet pipe connected with the second inlet port; the pressure regulating valve comprises a first pressure regulating valve arranged on the first air inlet pipe and a second pressure regulating valve arranged on the second air inlet pipe.

After adopting the structure, the improved foam self-skinning device related by the utility model has two different foaming processes compared with the prior art, firstly high temperature steam is input into the foaming cavity for the first time, a plurality of foaming particles are foamed for the first time to form a complete foam blank body, then steam with higher temperature is input into the foaming cavity for the second time, at the moment, the steam can not enter the interior of the foam blank in a large quantity, therefore, the foam blank body is foamed for the second time only on the surface of the foam blank body, so that the surface of the foam blank body is foamed more fully, larger, more and more uniform bubbles are formed on the surface of the foam blank body, the foam collapse phenomenon is reduced, the skinning quality is improved, and because more heats are accumulated to the bubble, when colliding with the mould wall of same microthermal, the two have bigger difference in temperature to accelerate the bubble to break, make the skinning form fast, promote skinning efficiency.

According to the scheme, the pressure of steam is directly increased through the pressure regulating valve according to the proportional relation between the temperature and the pressure of saturated steam pressure, so that the temperature of the steam is increased, and secondary foaming on the surface of a foaming blank is completed.

Drawings

Fig. 1 is a schematic structural diagram of an improved foam skinning device according to the present invention.

In the figure:

a first template-100, a first inlet-101, a first outlet-102, a first air inlet pipe-103 and a first pressure regulating valve-104;

a second template-200, a second inlet-201, a second outlet-202, a second air inlet pipe-203 and a second pressure regulating valve-204.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

As shown in fig. 1, the foam skinning device includes a foaming mold having a steam inlet, an air inlet pipe is provided on the steam inlet, and a pressure regulating valve is provided on the air inlet pipe.

The foaming mold comprises a first mold plate 100 and a second mold plate 200 which are matched, and the first mold plate 100 and the second mold plate 200 are covered to form a foaming cavity; the foaming mould is also provided with a steam outlet; the steam inlet comprises a first inlet 101 arranged on the first template 100 and a second inlet 201 arranged on the second template 200; the steam outlet comprises a first outlet 102 arranged on the first template 100 and a second outlet 202 arranged on the second template 200; the air inlet pipeline comprises a first air inlet pipe 103 connected with the first inlet port 101 and a second air inlet pipe 203 connected with the second inlet port 201; the pressure regulating valves include a first pressure regulating valve 104 provided in the first intake pipe 103 and a second pressure regulating valve 204 provided in the second intake pipe 203.

The foam self-skinning process performed according to the scheme comprises the following steps:

(1) forming a foam blank through primary foaming;

(2) carrying out secondary foaming on the surface of the foam green body;

(3) the bubbles on the surface of the foam body collapse and the cell walls are pressed into a firm skin.

In the step (2), in the second foaming process, the foaming temperature is higher than the temperature of the first foaming process, and the foaming pressure is higher than the pressure of the first foaming process.

In the step (1), a foaming mold is used for carrying out primary foaming, first steam is introduced into a foaming cavity in the foaming process for carrying out primary foaming, and a foam blank body is formed; in the step (2), introducing second steam into the foaming cavity to perform second foaming on the surface of the foam blank; wherein the second steam has a higher temperature and a higher pressure than the first steam.

The foaming mold is cooled in the two foaming processes, and the cooling system is the structure of the existing foam self-skinning device and is not described herein again. The foaming mould is cooled to reduce the temperature of the surface of the foam blank, so that the bubbles are broken.

So, the technology of the implementation of present case has twice foaming process, at first input high temperature steam toward foaming appearance intracavity, a plurality of foaming granule carries out first foaming and forms a complete foam body, then the second time toward foaming appearance intracavity input higher temperature steam, the inside of foam body can't get into in a large number to steam this moment, consequently only can carry out the foaming of second time on foam body surface, make foam body surface foaming more abundant, guarantee that foam body surface forms bigger more even bubble, reduce the collapse bubble phenomenon, the skinning quality has been improved, and because more heats are accumulated to the bubble, when colliding with the die wall of same microthermal, the two has the bigger difference in temperature, thereby accelerate the bubble to break, make the skinning form fast, promote skinning efficiency.

In the steps (1) and (2), the pressure of the steam entering the foaming chamber is regulated by a pressure regulating valve. According to the fact that the temperature and the pressure of the saturated steam pressure are in a proportional relation, in the step (2), the pressure of the steam entering the foaming cavity through the air inlet pipeline is increased through the pressure regulating valve, so that the temperature of the steam is also increased, and the steam finally entering the foaming cavity is the second type of steam.

More specifically, the operation steps of the whole process are that the pressure regulating valve is closed, first steam is introduced into the air inlet pipe, in the step (1), the second outlet 202 is kept in an open state, the first outlet 102 is kept in a closed state, then the first air inlet pipe 103 is opened, and the first steam enters the foaming cavity from the first air inlet pipe 103 to foam one side; keeping the second outlet 202 in a closed state and the first outlet 102 in an open state, and then opening the second air inlet pipe 203 to enable the first steam to enter the foaming cavity from the second air inlet pipe 203 to foam the other side; thus, the foaming particles are foamed for the first time to form a foaming blank body.

Then opening the pressure regulating valve, continuing to introduce second steam into the air inlet pipe, in the step (2), keeping the second outlet 202 in an open state, keeping the first outlet 102 in a closed state, then opening the first air inlet pipe 103, operating the first pressure regulating valve 104, increasing the pressure of the steam in the foaming cavity of the first air inlet pipe 103, converting the first steam into the second steam, and foaming the outer surface of one side of the foaming blank body; then keeping the second outlet 202 in a closed state, keeping the first outlet 102 in an open state, then opening the second air inlet pipe 203, operating the second pressure regulating valve 204, increasing the pressure of the steam entering the foaming cavity from the first air inlet pipe 103, converting the first steam into the second steam, and foaming the outer surface of the other side of the foaming body; thus, the surface of the foaming blank is foamed for the second time.

In the implementation, after the first foaming is completed through the first steam, the pressure of the first steam is directly increased through the pressure regulating valve, so that the temperature of the first steam is increased, the first steam is directly converted into the second steam, and the second foaming on the surface of a foaming blank is completed. It should be noted that, the steam outlet and the steam inlet of the present invention are both the same as the existing foam skinning device, and need to be provided with a steam valve. In addition, the numerical parameters of the steam temperature and the steam pressure are set according to the actual requirements.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. An improved generation foam skinning device which characterized in that: the foaming mold is provided with a steam inlet, the steam inlet is provided with an air inlet pipeline, and the air inlet pipeline is provided with a pressure regulating valve.

2. The improved foam skinning apparatus of claim 1 wherein: the foaming mould comprises a first template and a second template which are matched with each other; the foaming mould is also provided with a steam outlet; the steam inlet comprises a first inlet arranged on the first template and a second inlet arranged on the second template; the steam outlet comprises a first outlet arranged on the first template and a second outlet arranged on the second template; the air inlet pipeline comprises a first air inlet pipe connected with the first inlet port and a second air inlet pipe connected with the second inlet port; the pressure regulating valve comprises a first pressure regulating valve arranged on the first air inlet pipe and a second pressure regulating valve arranged on the second air inlet pipe.