CN111823473A - Latex sponge product mold and using method - Google Patents
Latex sponge product mold and using method Download PDFInfo
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- CN111823473A CN111823473A CN202010688937.8A CN202010688937A CN111823473A CN 111823473 A CN111823473 A CN 111823473A CN 202010688937 A CN202010688937 A CN 202010688937A CN 111823473 A CN111823473 A CN 111823473A
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- carbon dioxide
- latex
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- vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a latex sponge product mould and a using method thereof, wherein the latex sponge product mould comprises an upper mould and a lower mould, wherein cold and hot water channels are respectively arranged inside the upper mould and the lower mould; an annular surrounding dam is arranged on the periphery of the top surface of the lower die, a cavity is formed after the top surface of the annular surrounding dam is in close contact with the bottom surface of the upper die, and the aluminum needle is arranged in the cavity; the top surface of the annular dam is provided with a carbon dioxide and vacuum channel, a permeation groove and a sealing groove. The invention solves the problems that the latex foam product is formed at one time by arranging the cold and hot water channel and the aluminum needle and heating the inside of the mould, the Dunlop process needs to move the whole mould into the steam chamber for heating and vulcanizing, and the problems of high energy consumption, slow heat conduction, uneven temperature transmission in the mould cavity, incomplete product vulcanization and poor product quality due to the adoption of an external whole mould heating mode are solved.
Description
Technical Field
The invention relates to the field of latex sponge products, in particular to a latex sponge product mold and a using method thereof.
Background
The invention relates to a Dunlop process which is the mainstream production of latex sponge products in the world at present, and is invented in the last 20 th century, and the production of latex sponge by using the traditional Dunlop process is started from 1929. In the dunlop process, air is thoroughly stirred with a liquid emulsion to form a foam, and a trace amount of fluorochemical is allowed to form a gel with the foam in a mold. Then the sponge is solidified into the sponge by steam vulcanization in the mould. The finished product is stripped from the mould, washed and dried. The Dunlop is to fill the mold by injection, air is not extracted, and a freezing stage is not provided, so that the cell structure of the latex is not ventilated enough, and the product quality is poor. When the traditional Dendropu process is used for manufacturing latex foam products, the whole mold needs to be moved into a steam chamber for heating and vulcanizing, an external whole mold heating mode is adopted, the energy consumption is high, the heat conduction is slow, the temperature transfer in a mold cavity is uneven, the vulcanization of products is incomplete, and the product quality is poor.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a latex sponge product mold and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a latex sponge product mould comprises an upper mould and a lower mould, wherein cold and hot water channels are respectively arranged in the upper mould and the lower mould, aluminum needles are arranged on the bottom surface of the upper mould and the top surface of the lower mould, and the aluminum needles are communicated with the cold and hot water channels; the lower mould top surface is provided with annular box dam all around, form the cavity behind annular box dam top surface and the last mould bottom surface in close contact with, the aluminium needle sets up in the cavity, annular box dam top surface is provided with carbon dioxide and vacuum channel, infiltration groove and seal groove.
Furthermore, the left side and the right side of the upper die and the lower die are respectively provided with a cold and hot water inlet, the front side and the rear side of the upper die and the lower die are respectively provided with a cold and hot water outlet, and the cold and hot water inlet and the cold and hot water outlet are communicated with a cold and hot water channel.
Furthermore, the left and right of the lower die are respectively provided with a carbon dioxide and vacuum inlet and a carbon dioxide and vacuum outlet, and the carbon dioxide and vacuum inlet and the carbon dioxide and vacuum outlet are communicated with the carbon dioxide and vacuum channel.
Furthermore, the permeation groove is arranged on the inner side of the carbon dioxide and vacuum channel, and the permeation groove is inlaid with a breathable pad to prevent foam latex from overflowing to block the carbon dioxide and vacuum channel.
Further, the top surface of the annular box dam is further provided with a sealing groove, the sealing groove is formed in the outer side of the carbon dioxide and vacuum channel, a sealing strip is installed inside the sealing groove, and the sealing strip protrudes out of the top surface of the annular box dam.
Furthermore, the upper die is movably connected with an upper pressing plate of the hydraulic machine, the lower die is movably connected with a lower pressing plate of the hydraulic machine, and preferably, the movable connection mode is bolt connection.
A method for using a latex sponge product mold comprises the following steps:
1) the upper die of the die is movably connected with an upper pressing plate of a hydraulic machine, the lower die of the die is movably connected with a lower pressing plate of the hydraulic machine, and the upper die and the lower die are opened and closed by the lifting of the upper pressing plate of the hydraulic machine and the lower pressing plate of the hydraulic machine;
2) uniformly injecting foam latex into the cavity of the annular dam, operating a hydraulic press to close the upper die and the lower die, and enabling the sealing strip in the sealing groove to be in close contact with the upper die to enable the cavity of the die to be in a closed state;
3) opening a carbon dioxide and vacuum inlet and outlet, and pumping out air in the cavity by using a vacuum machine through the carbon dioxide and vacuum inlet and the carbon dioxide and vacuum channel, wherein the vacuum degree in the cavity reaches 2-6 kilograms of pressure, so that the foam latex is fully expanded and amplified and uniformly fills the whole cavity;
4) opening cold and hot water inlet and outlet of the upper die and the lower die, introducing refrigerating liquid from the cold and hot water inlet, discharging the refrigerating liquid from the cold and hot water outlet through a cold and hot water channel, and uniformly reducing the temperature in the die to minus 25-40 ℃ through an aluminum needle on the die so as to freeze the foam latex in the cavity to a solid circular structure;
5) opening a carbon dioxide and vacuum inlet, wherein the carbon dioxide can rapidly enter the cavity through the carbon dioxide and vacuum channel due to vacuum in the mold and fill each latex foam hole, the latex is completely gelled in 300-1200 seconds, the latex keeps the original open honeycomb structure and enables the foam latex to complete integral shaping, the carbon dioxide and vacuum inlet is closed, and the carbon dioxide and vacuum outlet is opened to enable the cavity to recover normal pressure;
6) and opening a cold and hot water inlet and a cold and hot water outlet, enabling the heat-conducting liquid to enter a cold and hot water channel from the cold and hot water inlet and be discharged from the cold and hot water outlet, and uniformly heating the latex in the cavity to 80-150 ℃ through an aluminum needle for about 20-120 minutes to vulcanize the latex and completely shape the latex.
Compared with the prior art, the invention has the beneficial effects that:
the invention solves the problems that the latex foam product is formed at one time by arranging the cold and hot water channel and the aluminum needle and heating the inside of the mould, the Dunlop process needs to move the whole mould into the steam chamber for heating and vulcanizing, and the problems of high energy consumption, slow heat conduction, uneven temperature transmission in the mould cavity, incomplete product vulcanization and poor product quality due to the adoption of an external whole mould heating mode are solved.
Drawings
FIG. 1 is a schematic structural diagram of a latex sponge mold according to the present invention;
FIG. 2 is a schematic structural view of another latex sponge mold according to the present invention;
in the figure: 1 upper die, 2 lower dies, 3 hot and cold water channels, 4 hot and cold water inlets, 5 hot and cold water outlets, 6 aluminum needles, 7 sealing grooves, 8 carbon dioxide and vacuum channels, 9 carbon dioxide and vacuum inlets, 10 carbon dioxide and vacuum outlets, 11 permeation grooves and 12 annular dams.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it should be understood that the preferred embodiments described herein are only for illustrating and explaining the present invention and are not intended to limit the present invention.
FIG. 1 is a schematic structural diagram of a latex sponge mattress according to the present invention; FIG. 2 is a schematic structural diagram of a latex sponge pillow according to the present invention; fig. 1 and 2 are the same in structure, except that the upper mold 1 and the lower mold 2 are combined to form a cavity, which is determined according to the shape of the latex sponge product.
Referring to the attached figures 1 and 2 of the specification, the latex sponge product mold comprises an upper mold 1 and a lower mold 2, wherein cold and hot water channels 3 are respectively arranged inside the upper mold 1 and the lower mold 2, aluminum needles 6 are arranged on the bottom surface of the upper mold 1 and the top surface of the lower mold 2, and the aluminum needles 6 are communicated with the cold and hot water channels 3; the hot and cold water inlet 3 is formed in the left side surface and the right side surface of the upper die 1 and the lower die 2, the hot and cold water outlet 5 is formed in the front side surface and the rear side surface of the upper die 1 and the lower die 2, and the hot and cold water inlet 3 and the hot and cold water outlet 5 are communicated with the hot and cold water channel 3; an annular surrounding dam 12 is arranged on the periphery of the top surface of the lower die 2, a cavity is formed after the top surface of the annular surrounding dam 12 is in close contact with the bottom surface of the upper die 1, and the aluminum needle 6 is arranged in the cavity; the top surface of the annular box dam 12 is provided with a carbon dioxide and vacuum channel 8, a permeation groove 11 and a sealing groove 7. In this embodiment, preferably, the corners of the left and right sides of the upper die 1 and the lower die 2 are provided with a cold and hot water inlet 3, the four corners of the upper die 1 and the lower die 2 are provided with the cold and hot water inlets 3, and the front and rear sides of the upper die 1 and the lower die 2 are provided with cold and hot water outlets 5, so that the water inflow and the water outflow can be increased, and the temperatures of the upper die 1 and the lower die 2 are more balanced; in this embodiment, the aluminum pins 6 mainly serve to transfer heat, and the number of the aluminum pins 6 is not limited, and is changed according to the shape and size of the product, so as to achieve the best effect.
Further, the left and right of the lower die 2 are respectively provided with a carbon dioxide and vacuum inlet 9 and a carbon dioxide and vacuum outlet 10, and the carbon dioxide and vacuum inlet 9 and the carbon dioxide and vacuum outlet 10 are communicated with a carbon dioxide and vacuum channel 8.
Further, the permeation groove 11 is arranged on the inner side of the carbon dioxide and vacuum channel 8, the permeation groove 11 is inlaid with a breathable pad which can prevent foam latex from overflowing to block the carbon dioxide and vacuum channel 8, and preferably, the breathable pad is a breathable paper pad.
Further, seal groove 7 sets up in the carbon dioxide and the 8 outsides of vacuum channel, 7 internally mounted sealing strips in seal groove, the sealing strip is protruding in 12 top surfaces of annular box dam, goes up mould 1 and 2 combination backs of lower mould, and the sealing strip will go up mould 1 and 2 combination of lower mould and become airtight cavity, and is preferred, and the sealing strip material is rubber.
Furthermore, the upper die 1 is movably connected with an upper pressing plate of the hydraulic press, and the lower die 2 is movably connected with a lower pressing plate of the hydraulic press. Preferably, the movable connection mode is bolt connection, so that the die is convenient to disassemble and replace.
A method for using a latex sponge product mold comprises the following steps:
1) the upper die 1 of the die is movably connected with an upper pressing plate of a hydraulic machine, the lower die 2 of the die is movably connected with a lower pressing plate of the hydraulic machine, and the upper die 1 and the lower die 2 are opened and closed by the lifting of the upper pressing plate of the hydraulic machine and the lower pressing plate of the hydraulic machine;
2) uniformly injecting foam latex into the cavity of the annular dam 12, operating a hydraulic press to close the upper die 1 and the lower die 2, and tightly contacting a sealing strip in the sealing groove 7 with the upper die 1 to enable the cavity of the die to be in a closed state;
3) opening a carbon dioxide and vacuum inlet 9, and pumping out air in the cavity by using a vacuum machine through the carbon dioxide and vacuum inlet 9 and a carbon dioxide and vacuum channel 8, wherein the vacuum degree in the cavity reaches 2-6 kg of pressure, so that the foam latex is fully expanded and amplified and uniformly fills the whole cavity;
4) opening cold and hot water inlet and outlet ports of the upper die 1 and the lower die 2, introducing refrigerating liquid from a cold and hot water inlet 4, discharging the refrigerating liquid from a cold and hot water outlet 5 through a cold and hot water channel 3, and uniformly reducing the temperature in the die to minus 25-40 ℃ through an aluminum needle 6 on the die so as to freeze the foam latex in the cavity to a solid circular structure;
5) opening a carbon dioxide and vacuum inlet 9, wherein carbon dioxide rapidly enters the cavity through a carbon dioxide and vacuum channel 8 due to vacuum in the mold and fills each latex foam hole, the latex is completely gelled in 300-1200 seconds, the latex keeps the original open honeycomb structure and enables the foam latex to complete integral shaping, closing the carbon dioxide and vacuum inlet 9, and opening a carbon dioxide and vacuum outlet 10 to enable the cavity to recover normal pressure;
6) and opening a cold and hot water inlet 4 and a cold and hot water outlet 5, enabling the heat-conducting liquid to enter a cold and hot water channel 3 from the cold and hot water inlet 4 and be discharged from the cold and hot water outlet 5, and uniformly heating the latex in the cavity to 80-150 ℃ through an aluminum needle 6 for about 20-120 minutes to vulcanize the latex and completely shape the latex.
In the description of this patent, it is to be understood that the terms "upper," "lower," "inner," "outer," "center," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.
In this patent, unless expressly stated or limited otherwise, the terms "combined," "disposed," "connected," "secured," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, releasably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, or they may be connected internally or in an interactive relationship with each other, and unless otherwise specifically limited, the specific meaning of the above terms in this patent will be understood by those skilled in the art according to the specific circumstances.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A latex sponge product mould comprises an upper mould (1) and a lower mould (2), and is characterized in that cold and hot water channels (3) are respectively arranged in the upper mould (1) and the lower mould (2), aluminum needles (6) are arranged on the bottom surface of the upper mould (1) and the top surface of the lower mould (2), and the aluminum needles (6) are communicated with the cold and hot water channels (3); lower mould (2) top surface is provided with annular box dam (12) all around, annular box dam (12) top surface and last mould (1) bottom surface in close contact with back formation cavity, aluminium needle (6) set up in the cavity, annular box dam (12) top surface is provided with carbon dioxide and vacuum channel (8), infiltration groove (11) and seal groove (7).
2. A latex sponge product mold as claimed in claim 1, wherein the upper mold (1) and the lower mold (2) are provided with hot and cold water inlets (4) at left and right sides thereof, the upper mold (1) and the lower mold (2) are provided with hot and cold water outlets (5) at front and rear sides thereof, and the hot and cold water inlets (4) and the hot and cold water outlets (5) are communicated with the hot and cold water channel (3).
3. A latex sponge product mold according to claim 2, wherein said lower mold (2) is provided with a carbon dioxide and vacuum inlet (9) and a carbon dioxide and vacuum outlet (10) on the left and right, respectively, said carbon dioxide and vacuum inlet (9) and carbon dioxide and vacuum outlet (10) being in communication with the carbon dioxide and vacuum passage (8).
4. A latex sponge goods mold as claimed in claim 1, wherein said permeation groove (11) is provided inside the carbon dioxide and vacuum passage (8), and the permeation groove (11) is lined with a gas permeable pad to prevent the foam latex from overflowing and blocking the carbon dioxide and vacuum passage (8).
5. The latex sponge product mold according to claim 4, wherein the sealing groove (7) is arranged outside the carbon dioxide and vacuum channel (8), and a sealing strip is arranged inside the sealing groove (7) and protrudes from the top surface of the annular dam (12).
6. A latex sponge product mold as claimed in any one of claims 1 to 3, wherein said upper mold (1) is movably connected to the upper press plate of a hydraulic press and said lower mold (2) is movably connected to the lower press plate of a hydraulic press.
7. A method for using a latex sponge product mold comprises the following steps:
1) the upper die (1) of the die is movably connected with an upper pressing plate of a hydraulic machine, the lower die (2) of the die is movably connected with a lower pressing plate of the hydraulic machine, and the upper die (1) and the lower die (2) are opened and closed by lifting the upper pressing plate of the hydraulic machine and the lower pressing plate of the hydraulic machine;
2) uniformly injecting foam latex into the cavity of the annular dam (12), operating a hydraulic press to close the upper die (1) and the lower die (2), and tightly contacting a sealing strip in the sealing groove (7) with the upper die (1) to enable the cavity of the die to be in a closed state;
3) opening a carbon dioxide and vacuum inlet and outlet (9), and pumping out air in the cavity by using a vacuum machine through the carbon dioxide and vacuum inlet (9) and a carbon dioxide and vacuum channel (8), wherein the vacuum degree in the cavity reaches 2-6 kilograms of pressure, so that the foam latex is fully expanded and amplified and the whole cavity is uniformly filled;
4) opening cold and hot water inlets and outlets of the upper die (1) and the lower die (2), allowing refrigerating liquid to enter from the cold and hot water inlets (4), discharging from the cold and hot water outlets (5) through the cold and hot water channels (3), and uniformly reducing the temperature in the die to minus 25-40 ℃ through aluminum needles (6) on the die, so that the foam latex in the cavity is frozen to a solid circular structure;
5) opening a carbon dioxide and vacuum inlet (9), wherein the carbon dioxide can rapidly enter the cavity through a carbon dioxide and vacuum channel (8) due to vacuum in the mold and fill each latex cell, the latex is completely gelled in 300-1200 seconds, the latex keeps the original open honeycomb structure and enables the foam latex to complete integral shaping, closing the carbon dioxide and vacuum inlet (9), and opening a carbon dioxide and vacuum outlet (10) to enable the cavity to recover normal pressure;
6) and opening a cold and hot water inlet (4) and a cold and hot water outlet (5), enabling heat conduction liquid to enter a cold and hot water channel (3) from the cold and hot water inlet (4) and be discharged from the cold and hot water outlet (5), and uniformly heating the latex in the cavity to 80-150 ℃ through an aluminum needle (6) for about 20-120 minutes to vulcanize the latex and completely shape the latex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688937.8A CN111823473A (en) | 2020-07-17 | 2020-07-17 | Latex sponge product mold and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010688937.8A CN111823473A (en) | 2020-07-17 | 2020-07-17 | Latex sponge product mold and using method |
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| Publication Number | Publication Date |
|---|---|
| CN111823473A true CN111823473A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010688937.8A Pending CN111823473A (en) | 2020-07-17 | 2020-07-17 | Latex sponge product mold and using method |
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| CN (1) | CN111823473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953317A (en) * | 2022-03-31 | 2022-08-30 | 江苏罡泽智能装备有限公司 | Automation equipment and process for producing tara bud complete set latex product |
-
2020
- 2020-07-17 CN CN202010688937.8A patent/CN111823473A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953317A (en) * | 2022-03-31 | 2022-08-30 | 江苏罡泽智能装备有限公司 | Automation equipment and process for producing tara bud complete set latex product |
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