CN114148001A - Production method and production device of vacuum heat insulation plate - Google Patents
Production method and production device of vacuum heat insulation plate Download PDFInfo
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- CN114148001A CN114148001A CN202111234477.2A CN202111234477A CN114148001A CN 114148001 A CN114148001 A CN 114148001A CN 202111234477 A CN202111234477 A CN 202111234477A CN 114148001 A CN114148001 A CN 114148001A
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- film
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- insulation panel
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- lower film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention provides a production method of a vacuum insulation panel, which comprises the following steps: 1) preparing a lower film of the vacuum insulation panel: pressing the barrier film through a die to form a concave accommodating cavity on the surface of the barrier film along the thickness direction; 2) putting the filling core material into the accommodating cavity, conveying the filling core material to an external two-side sealing device by using the coiled film as an upper film, and carrying out hot-pressing sealing on two sides of the lower film and the upper film; the other two edges of the upper film and the lower film form an opening for vacuum air suction; 3) and under the vacuum condition, air is pumped out through the opening, the inner vacuum state of the core material is kept, and the opening is sealed by hot pressing. The invention also provides a production device of the vacuum insulation panel, which is used for realizing the production method.
Description
Technical Field
The present invention relates to vacuum insulation panels and in particular to the production of vacuum insulation panels.
Background
The Vacuum insulation Panel (VIP Panel) is a short name of Vacuum insulation Panel in English and is one of Vacuum insulation materials. The vacuum insulation panel consists of a filling core material, a gas adsorbent and an isolation bag, and can be widely applied to various industries.
The existing structure of the vacuum insulation panel is a barrier film bag with a filling core material manually placed to one side open and three sides sealed, and the barrier film is mainly made of one of PE, CPP, PP or EVOH. In the vacuum insulation panel, air in the core material is pumped out through the single-side opening of the barrier film under the vacuum condition, and is sealed in a vacuum chamber in a heat sealing mode. The structural barrier film is thin and has the thickness of 0.01-0.05 mm. The method comprises the following steps:
firstly, the channel for sealing and vacuumizing has only one outlet in the barrier bag and is vacuumized, and the channel is small;
secondly, the required vacuum degree can be reached in a long time, a large amount of manpower and material resources are consumed, and the production cost is high.
And thirdly, because only one end of the separation bag is subjected to outlet vacuumizing, and the other side of the separation bag is not provided with an outlet, the whole vacuum insulation panel is not uniformly stressed in a sucking manner, and wrinkles and other phenomena can occur.
The vacuum insulation panel made of the thin barrier bag has insufficient structural strength of the sealing and edge sealing, has more obvious transition wrinkles at right angles, is easy to damage after long-term use, and leaks air from the inside to influence the vacuum insulation effect.
One end of the bag-shaped film is opened, the core material is filled in the bag-shaped film, the upper film and the lower film can be naturally arched under a vacuum chamber, the wrinkle phenomenon after sealing is obvious, the arc part can not be naturally transited, and the appearance is influenced.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a production method of a vacuum insulation panel, wherein a lower film is integrally formed, and the vacuum insulation panel has stronger rigidity, particularly attractive arc transition and firm structure. The vacuum insulated panel after vacuumizing and sealing has good structural strength and is not easy to damage.
In order to solve the technical problem, the invention provides a production method of a vacuum insulation panel, which comprises the following steps:
1) preparing a lower film of the vacuum insulation panel: pressing the barrier film through a die to form a concave accommodating cavity on the surface of the barrier film along the thickness direction;
2) putting the filling core material into the accommodating cavity, conveying the filling core material to an external two-side sealing device by using the coiled film as an upper film, and carrying out hot-pressing sealing on two sides of the lower film and the upper film; the other two edges of the upper film and the lower film form an opening for vacuum air suction;
3) and under the vacuum condition, air is pumped out through the opening, the inner vacuum state of the core material is kept, and the opening is sealed by hot pressing.
In a preferred embodiment: when the barrier film is pressed through the die, the barrier film is at the temperature of 120-180 ℃.
In a preferred embodiment: the thickness of the upper film is 0.01-0.05mm, and the thickness of the lower film is 0.2-0.4 mm.
The invention also provides a production device of the vacuum insulation panel, which comprises the following components: the device comprises a barrier film conveying device, an external two-side sealing device, a barrier film cutting device, a clamping and conveying device, a lower film, a filling core material and a lower film core material conveying table;
the barrier film conveying device is used for conveying a rolled film serving as an upper film to an external two-side sealing device, the lower film is provided with a containing cavity which is concave along the thickness direction, and a filling core material is placed in the containing cavity; the lower film core material conveying table is used for conveying the lower film filled with the core materials to the external two-side sealing device;
the external two-edge sealing device carries out hot-pressing sealing on two edges of the upper film and the lower film; the other two edges of the upper film and the lower film form an opening for vacuum air suction;
the barrier film cutting device and the clamping and conveying device are used for cutting the upper film with the two sealed sides, clamping the upper film with the two sealed sides and the lower film, conveying the clamped upper film and lower film to the vacuum pumping chamber, and vacuumizing.
In a preferred embodiment: the central rotating shaft of the roll film is an inflatable shaft, a plurality of groups of tensioning elastic sheets are arranged on the inflatable shaft, and air pressure is applied to the inflatable shaft through an air cylinder, so that the plurality of groups of tensioning elastic sheets are opened.
In a preferred embodiment: the film winding and sealing device is characterized by further comprising a gas rod push rod, wherein the gas rod push rod is arranged between the film winding and the external two-side sealing device and used for applying certain tension force to the upper film.
In a preferred embodiment: the external two-edge sealing device is provided with a left sealing cutter set and a right sealing cutter set and is used for carrying out hot-pressing sealing on two edges of the upper film and the lower film.
In a preferred embodiment: the external two-side sealing device is provided with a conveying plate, the conveying plate is arranged on a guide rail, and the guide rail extends into the external two-side sealing device along the width direction of the external two-side sealing device; the conveying plate is used for conveying the lower film to the interior of the external two-side sealing device;
the conveying plate is provided with the left sealing cutter group, and the left sealing cutter group is translated along the length direction of the conveying plate under the action of the air cylinder so as to be adapted to lower films with different widths.
In a preferred embodiment: the right sealing cutter group is arranged in the two-side sealing device and is translated along the thickness direction of the conveying plate under the action of the bottom cylinder, so that an opening for moving out the upper film and the lower film which are sealed at the two sides is formed.
In a preferred embodiment: the left cutter sealing tool set and the right cutter sealing tool set are respectively provided with a tool holder base, heat-conducting silica gel and a heating plate; the heat conduction silica gel is used for transferring heat generated by the heating sheet to the upper film and the lower film so as to enable the upper film and the lower film to be subjected to hot-pressing sealing.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a production method of a vacuum heat-insulating plate, wherein a film with certain length and width does not need to be cut in advance, a coiled film is used as the upper film, the upper film is pulled to an external two-side sealing device through a clamping mechanism, the lower film is attached and two sides are sealed, and the film is cut when a vacuum heat-insulating plate is made. The cut board is conveyed to the next process. Meanwhile, the next basement membrane with the core material is conveyed to an external two-side sealing device for sealing, automatic circulation is repeated, efficiency is high, and cutting is convenient.
2. The invention provides a production method of a vacuum insulation panel, a rolled film can continuously run without interruption, materials cannot be wasted, the manufacturing cost of barrier bags is reduced, and the production process is optimized.
3. The invention provides a production method of a vacuum heat-insulating plate, wherein an upper film of the produced vacuum heat-insulating plate consists of a barrier film with the thickness of 0.01-0.05mm, and a lower film of the produced vacuum heat-insulating plate consists of a barrier film with the thickness of 0.2-0.4 mm. Therefore, the lower film is thicker and is a lower concave shell-shaped structure formed by pressing the barrier film at a certain temperature through a die, the structural strength of the lower film is higher, and the 4 corners and the edge faces are sealed more tightly when the upper film is packaged. Is less prone to damage and can be used for a long time.
4. The invention provides a production method of a vacuum insulation panel, wherein four corner surfaces of a lower film are outer arc surfaces, and narrow edge surfaces are reserved on four edges of an upper plane opening. And the core material is arranged in the lower film and filled inside, and the shell opening is larger, so that the core material is convenient to install.
5. The invention provides a production method of a vacuum heat-insulating plate, wherein two sides of the sealing of an upper film and a lower film are sealed by an external two-side sealing device, an external sealing machine seals two sides of the upper film and the lower film firstly, so that the structural strength and the sealing tightness are ensured, the sealing is not deformed, a bottom film is used for placing an internal filling core material, and the installation is convenient. After the sealing of both sides is completed, the sealing of the other two sides is performed in a vacuum chamber. The air in the vacuum insulation panel has outlets at two sides, so that the vacuum pumping stress is more uniform and thorough, and the manufactured vacuum insulation panel is firm, attractive, free of wrinkles and not easy to damage and leak.
Drawings
FIG. 1 is an exploded view of the structure of a vacuum insulation panel in a preferred embodiment of the present invention;
FIG. 2 is a perspective view of a vacuum insulation panel in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic view of a production apparatus for a vacuum insulation panel according to a preferred embodiment of the present invention;
fig. 4 is a perspective view of a production apparatus for a vacuum insulation panel in accordance with a preferred embodiment of the present invention;
FIG. 5 is a perspective view of an external two-sided sealing device in accordance with a preferred embodiment of the present invention;
fig. 6 is another perspective view of the outboard two-sided sealing closure in accordance with the preferred embodiment of the present invention.
Detailed Description
The technical solution 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; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, are used in a broad sense, and for example, "connected" may be a wall-mounted connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.
Referring to fig. 1 to 6, the present embodiment provides a method for producing a vacuum insulation panel, including the steps of:
1) manufacturing a lower film 1 of the vacuum insulation panel: pressing the barrier film through a die to form a concave accommodating cavity on the surface of the barrier film along the thickness direction;
2) putting the filling core material into the accommodating cavity, conveying the filling core material to an external two-edge sealing device 3 by using the roll film 2 as an upper film, and carrying out hot-pressing sealing on two edges of the lower film 1 and the upper film; the other two edges of the upper film and the lower film 1 form an opening for vacuum air suction;
3) and under the vacuum condition, air is pumped out through the opening, the inner vacuum state of the core material is kept, and the opening is sealed by hot pressing.
In this embodiment, when the barrier film is pressed by the mold, the barrier film is at a temperature of 120 ℃ to 180 ℃.
According to the production method of the vacuum heat-insulating plate, the film is coated without cutting a film with certain length and width in advance, the invention uses the coiled film 2 as the upper film, the upper film is pulled to the external two-side sealing device 3 through the clamping mechanism, the lower film 1 is attached and two sides are sealed, and when a vacuum heat-insulating plate is prepared, the film is cut. The cut board is conveyed to the next process. Meanwhile, the next basement membrane with the core material is conveyed to the external two-edge sealing device 3 for sealing, automatic circulation is repeated, efficiency is high, and cutting is convenient. Moreover, the roll film 2 can continuously run, materials cannot be wasted, the manufacturing cost of the barrier bag is reduced, and the production process is optimized.
The vacuum insulation panel produced by the production method has the upper film consisting of the barrier film with the thickness of 0.01mm-0.05mm, and the lower film 1 consisting of the barrier film with the thickness of 0.2mm-0.4 mm. Therefore, the lower film 1 is thicker, the lower film 1 is a lower concave shell-shaped structure formed by pressing the barrier film at a certain temperature through a die, the structural strength of the bottom film is higher, and 4 corners and edge faces are sealed more tightly when the upper film is packaged. Is less prone to damage and can be used for a long time. And four corner surfaces of the lower film 1 are outer arc surfaces, and narrow side surfaces are reserved on four sides of the upper plane opening. And the core material is arranged in the lower film 1 and filled inside, and the shell opening is larger, so that the core material is convenient to install.
In addition, the sealing of the upper film and the lower film 1 is realized through an external two-side sealing device 3, an external sealing machine seals two sides of the upper film and the lower film firstly, the structural strength and the sealing tightness are guaranteed, the sealing is not deformed, the bottom film is used for placing an internal filling core material, and the installation is convenient. After the sealing of both sides is completed, the sealing of the other two sides is performed in a vacuum chamber. The air in the vacuum insulation panel has outlets at two sides, so that the vacuum pumping stress is more uniform and thorough, and the manufactured vacuum insulation panel is firm, attractive, free of wrinkles and not easy to damage and leak.
In order to implement the above production method, this embodiment further provides a production apparatus for a vacuum insulation panel, including: a barrier film conveying device 4, an external two-side sealing device 3, a barrier film cutting device 5, a clamping and conveying device 6, a lower film 1, filling core materials and a lower film core material conveying table;
the barrier film conveying device 4 is used for conveying the rolled film 2 serving as an upper film to the external two-side sealing device 3, the lower film 1 is provided with a concave accommodating cavity along the thickness direction, and a filling core material is placed in the accommodating cavity; the lower film core material conveying table is used for conveying the lower film 1 filled with the core materials to the external two-side sealing device 3;
the external two-edge sealing device 3 carries out hot-pressing sealing on two edges of the upper film and the lower film 1; the other two edges of the upper film and the lower film 1 form an opening for vacuum air suction;
the barrier film cutting device 5 and the clamping and conveying device 6 are used for cutting the upper film with the two sealed sides, clamping the upper film with the two sealed sides and the lower film 1, and conveying the clamped upper film and the lower film to a vacuum pumping chamber for vacuumizing.
Specifically, the central rotation axis of the roll film 2 is an inflation axis as the: the barrier film conveying device 4 is characterized in that a plurality of groups of tensioning elastic sheets are arranged on the air inflation shaft, and air pressure is applied to the air inflation shaft through an air cylinder, so that the plurality of groups of tensioning elastic sheets are stretched. This secures the balloon and the film roll 2 together. Then, when the roll film 2 needs to be replaced, the air inflation shaft is deflated through the air cylinder, so that the tense elastic sheet can contract, and the fixation of the roll film 2 is released.
In this embodiment, in order to keep the rolled film 2 in a tense state, the film winding device further comprises an air rod push rod 21, and the air rod push rod 21 is arranged between the rolled film 2 and the external two-side sealing device 3 and is used for applying a certain tension to the upper film.
In addition, in order to seal the two edges of the upper and lower films 1, the external two-edge sealing device 3 is provided with a left sealing knife tool set 31 and a right sealing knife tool set 32 for hot-pressing the two edges of the upper and lower films 1.
In order to convey the lower film 1 added with the filling core material into the external two-edge sealing device 3, the external two-edge sealing device 3 is provided with a conveying plate 33, the conveying plate 33 is arranged on a guide rail 34, and the guide rail 34 extends into the external two-edge sealing device 3 along the width direction of the external two-edge sealing device 3; the conveying plate 33 is used for conveying the lower film 1 to the interior of the external two-side sealing device 3;
specifically, the left sealing knife tool set 31 is arranged on the conveying plate 33, and the left sealing knife tool set 31 is translated along the length direction of the conveying plate 33 under the action of the air cylinder so as to adapt to the lower films 1 with different widths. The right sealing knife tool set 32 is arranged in the two-side sealing device and is translated along the thickness direction of the conveying plate 33 under the action of the bottom cylinder, so that an opening for moving out the upper film and the lower film 1 after the two sides are sealed is formed.
The left knife sealing cutter group 31 and the right knife sealing cutter group 32 are respectively provided with a knife clamp base, heat conducting silica gel and a heating plate; the heat conduction silica gel is used for transferring heat generated by the heating sheet to the upper film and the lower film 1 so as to seal the upper film and the lower film 1 in a hot pressing manner.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (10)
1. A production method of a vacuum insulation panel is characterized by comprising the following steps:
1) preparing a lower film of the vacuum insulation panel: pressing the barrier film through a die to form a concave accommodating cavity on the surface of the barrier film along the thickness direction;
2) putting the filling core material into the accommodating cavity, conveying the filling core material to an external two-side sealing device by using the coiled film as an upper film, and carrying out hot-pressing sealing on two sides of the lower film and the upper film; the other two edges of the upper film and the lower film form an opening for vacuum air suction;
3) and under the vacuum condition, air is pumped out through the opening, the inner vacuum state of the core material is kept, and the opening is sealed by hot pressing.
2. A method of producing a vacuum insulation panel according to claim 1 wherein: when the barrier film is pressed through the die, the barrier film is at the temperature of 120-180 ℃.
3. A method of producing a vacuum insulation panel according to claim 1 wherein: the thickness of the upper film is 0.01-0.05mm, and the thickness of the lower film is 0.2-0.4 mm.
4. A production device of a vacuum insulation panel is characterized by comprising: the device comprises a barrier film conveying device, an external two-side sealing device, a barrier film cutting device, a clamping and conveying device, a lower film, a filling core material and a lower film core material conveying table;
the barrier film conveying device is used for conveying a rolled film serving as an upper film to an external two-side sealing device, the lower film is provided with a containing cavity which is concave along the thickness direction, and a filling core material is placed in the containing cavity; the lower film core material conveying table is used for conveying the lower film filled with the core materials to the external two-side sealing device;
the external two-edge sealing device carries out hot-pressing sealing on two edges of the upper film and the lower film; the other two edges of the upper film and the lower film form an opening for vacuum air suction;
the barrier film cutting device and the clamping and conveying device are used for cutting the upper film with the two sealed sides, clamping the upper film with the two sealed sides and the lower film, conveying the clamped upper film and lower film to the vacuum pumping chamber, and vacuumizing.
5. The apparatus for producing a vacuum insulation panel according to claim 4, wherein: the central rotating shaft of the roll film is an inflatable shaft, a plurality of groups of tensioning elastic sheets are arranged on the inflatable shaft, and air pressure is applied to the inflatable shaft through an air cylinder, so that the plurality of groups of tensioning elastic sheets are opened.
6. The apparatus for producing a vacuum insulation panel according to claim 4, wherein: the film winding and sealing device is characterized by further comprising a gas rod push rod, wherein the gas rod push rod is arranged between the film winding and the external two-side sealing device and used for applying certain tension force to the upper film.
7. The apparatus for producing a vacuum insulation panel according to claim 4, wherein: the external two-edge sealing device is provided with a left sealing cutter set and a right sealing cutter set and is used for carrying out hot-pressing sealing on two edges of the upper film and the lower film.
8. A production apparatus for a vacuum insulation panel according to claim 7, wherein: the external two-side sealing device is provided with a conveying plate, the conveying plate is arranged on a guide rail, and the guide rail extends into the external two-side sealing device along the width direction of the external two-side sealing device; the conveying plate is used for conveying the lower film to the interior of the external two-side sealing device;
the conveying plate is provided with the left sealing cutter group, and the left sealing cutter group is translated along the length direction of the conveying plate under the action of the air cylinder so as to be adapted to lower films with different widths.
9. A production apparatus for a vacuum insulation panel according to claim 7, wherein: the right sealing cutter group is arranged in the two-side sealing device and is translated along the thickness direction of the conveying plate under the action of the bottom cylinder, so that an opening for moving out the upper film and the lower film which are sealed at the two sides is formed.
10. A production apparatus for a vacuum insulation panel according to claim 7, wherein: the left cutter sealing tool set and the right cutter sealing tool set are respectively provided with a tool holder base, heat-conducting silica gel and a heating plate; the heat conduction silica gel is used for transferring heat generated by the heating sheet to the upper film and the lower film so as to enable the upper film and the lower film to be subjected to hot-pressing sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234477.2A CN114148001A (en) | 2021-10-22 | 2021-10-22 | Production method and production device of vacuum heat insulation plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111234477.2A CN114148001A (en) | 2021-10-22 | 2021-10-22 | Production method and production device of vacuum heat insulation plate |
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| CN114148001A true CN114148001A (en) | 2022-03-08 |
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| CN202111234477.2A Pending CN114148001A (en) | 2021-10-22 | 2021-10-22 | Production method and production device of vacuum heat insulation plate |
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