Production equipment for surface foaming composite board of vacuum insulated panel

Abstract

The utility model relates to production equipment for a surface foaming composite board of a vacuum insulated panel, which comprises a laminating machine, the laminating machine comprises an upper pressing plate and a lower pressing plate which are distributed up and down, an inner mold frame is arranged on the lower pressing plate, an outer mold frame is further arranged on the lower pressing plate, and the inner mold frame is arranged in the outer mold frame during working. Sealing rings are circumferentially distributed on the upper side face and the lower side face of a frame of the outer mold frame, and a plurality of vacuum connecting openings used for being connected with an external vacuumizing device are distributed in the frame of the outer mold frame. On the lower pressing plate, the height of the outer mold frame is not lower than that of the inner mold frame; when the upper pressing plate and the lower pressing plate are in press fit with each other, the upper pressing plate and the lower pressing plate are in sealing fit with the upper side face and the lower side face of the frame of the outer mold frame.

Description

Technical Field

[0001] This utility model relates to a production equipment for a vacuum insulation panel surface foamed composite board. Background Technology

[0002] The existing laminator includes a frame with upper and lower pressure plates arranged vertically inside the frame. A mold frame is arranged between the upper and lower pressure plates. When the upper pressure plate presses down on the lower pressure plate, the upper pressure plate, the mold frame and the lower pressure plate are pressed together, so that a mold cavity for molding polyurethane board is formed inside the mold frame. The mixed polyurethane foam raw material is injected into the mold cavity to form polyurethane board.

[0003] Existing vacuum insulation panels consist of a sheet-like core material supported by fiberglass or silica, and a membrane bag covering the core material. The sheet-like vacuum insulation panel can be obtained by vacuuming the membrane bag.

[0004] Existing foamed composite panels for vacuum insulation panels involve foaming polyurethane onto the surface of a vacuum insulation panel. The specific method includes: placing a mold frame on the lower platen of a laminator, placing the vacuum insulation panel inside the mold frame, closing the upper platen, and then injecting a mixed polyurethane or phenolic resin foaming material into the upper and lower sides of the vacuum insulation panel; followed by curing; and after curing, opening the upper platen and demolding to obtain an insulation board with the foamed material covering the surface of the vacuum insulation panel. This method makes it difficult to guarantee the consistency of the thickness and density of the foam layer on the same side of the vacuum insulation panel. This is because after the foaming material is injected, it relies solely on its own expansion and compression to cover the surface of the vacuum insulation panel, making it difficult to ensure that the foaming material is evenly distributed on the same side of the vacuum insulation panel. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a production equipment for foamed composite board on the surface of vacuum insulation board, so as to make the foaming raw material more evenly distributed on the same side of the vacuum insulation board.

[0006] To solve the above-mentioned technical problems, this utility model provides a production equipment for a vacuum insulation panel surface foamed composite board, including a laminator. The laminator includes upper and lower pressure plates distributed vertically. An inner mold frame is provided on the lower pressure plate, and an outer mold frame is also provided on the lower pressure plate. During operation, the inner mold frame is located inside the outer mold frame. The upper and lower sides of the outer mold frame are provided with circumferentially distributed sealing rings. Multiple vacuum connection ports for connecting to an external vacuum pumping device are distributed on the side of the outer mold frame. The height of the outer mold frame on the lower pressure plate is not lower than the height of the inner mold frame. When the upper and lower pressure plates are pressed together, the upper and lower pressure plates respectively seal with the upper and lower sides of the side of the outer mold frame. During operation, the vacuum insulation panel is placed in the center of the inner mold frame, the upper and lower pressure plates are closed, and then foaming material is injected into the center of both sides of the vacuum insulation panel through the main nozzles preset on the upper and lower pressure plates. Under the action of the vacuum device, the foaming material is dispersed in all directions with the airflow in the inner mold frame, so that the foaming material is evenly distributed on the same side of the vacuum insulation panel, ensuring that the thickness and density of the cured foam layer are relatively uniform.

[0007] A preferred embodiment has multiple lower nozzles evenly distributed on the lower pressure plate and inside the inner mold frame for quantitatively spraying foaming material to form foam support blocks during operation. During operation, before the vacuum insulation panel is placed inside the inner mold frame, the lower nozzles quantitatively spray a small amount of foaming material to form foam support blocks. The thickness of these foam support blocks is consistent with the thickness of the foaming material on the corresponding side of the vacuum insulation panel in the desired finished vacuum insulation panel surface foam composite board. After the foam support blocks are formed and cured, the vacuum insulation panel is placed inside the inner mold frame and positioned on each foam support block. This facilitates the dispersion of the foaming material in all directions when it is injected into one side of the vacuum insulation panel through the main nozzle, further ensuring the consistency of foam thickness and density.

[0008] A preferred embodiment has multiple upper nozzles evenly distributed on the upper pressure plate and corresponding to the inner side of the inner mold frame, for quantitatively spraying foaming material during operation to generate foaming support blocks. This structure serves the same function as described above.

[0009] A preferred embodiment is that the inner sides of each frame of the inner mold frame are evenly distributed with multiple side nozzles for quantitatively spraying foaming material to generate lateral support blocks during operation. During operation, before the vacuum insulation panel is placed inside the inner mold frame, the side nozzles quantitatively spray a small amount of foaming material and generate lateral support blocks, which are used to limit the vacuum insulation panel subsequently placed into the inner mold frame, so that the foam layer thickness of the four perimeter of the vacuum insulation panel composite board is uniform.

[0010] A preferred embodiment is that the upper and lower pressure plates are provided with main nozzles at their centers for quantitatively spraying foaming material during operation, so as to foam and form a foamed layer on the surface of the vacuum insulation panel. During operation, after the foaming material is injected into the center of both sides of the vacuum insulation panel through the main nozzles, the foaming material is uniformly diffused to the corresponding sides of the vacuum insulation panel under the action of the vacuum pumping device.

[0011] A preferred embodiment is that the main nozzles on the upper and lower pressure plates include needle tips that extend beyond the surfaces of the upper and lower pressure plates during operation; the upper and lower nozzles also include needle heads that extend beyond the surfaces of the upper and lower pressure plates during operation, and the height of the needle tips and needle heads extending beyond the surfaces of the upper and lower pressure plates is less than the thickness of the foamed layer. Before generating the foamed support block, an aluminum film is first laid on the upper and lower pressure plates at a position corresponding to the inner side of the inner mold frame. The needle tips and needle heads are used to pierce the aluminum film to facilitate material discharge from the upper and lower nozzles during operation. After the composite board is formed, the aluminum film is finally bonded to the outer surface of the subsequently generated foamed layer, thereby protecting the foamed layer and improving the insulation effect.

[0012] The beneficial effects of this utility model are as follows: (1) When the above-mentioned production equipment is working, by evacuating the outer mold frame, the foaming material is dispersed in the inner mold frame with the airflow, thereby making the foaming material more uniformly distributed on the same side of the vacuum insulation board compared with the prior art, ensuring the consistency of foaming thickness and density. (2) Multiple upper and lower nozzles are respectively set on the upper and lower pressure plates for quantitatively spraying foaming material to generate foaming support blocks during operation. During operation, foaming support blocks are first generated on the upper and lower pressure plates, and then the vacuum insulation board is placed in the inner mold frame, so that when the foaming material is injected into one side of the vacuum insulation board through the main nozzle, the foaming material is dispersed in all directions, and the consistency of foaming thickness and density is further ensured. (3) Multiple side nozzles are set on each side of the inner mold frame for quantitatively spraying foaming material to generate lateral support blocks during operation. The lateral support block is used to limit the vacuum insulation board inserted into the inner mold frame, so that the distance between the inner edge of the frame and the four perimeter of the vacuum insulation board composite board is basically the same, and at the same time, the thickness of the foam layer around the four perimeter of the vacuum insulation board composite board is the same. (4) The needle tip and needle head are respectively the extensions of the upper and lower nozzles. Before generating the foam support block, aluminum film is first laid on the upper and lower pressure plates at the position corresponding to the inner side of the inner mold frame. The needle tip and needle head are respectively used to pierce the aluminum film to facilitate the material discharge when the upper and lower nozzles are working, and to generate the foam support block on the aluminum film. After the product is formed, the aluminum film is finally bonded to the outer side of the subsequently generated foam layer, thereby protecting the foam layer and improving the heat preservation effect. Attached Figure Description

[0013] To clearly illustrate the innovative principle of this utility model and its advantages over existing vacuum insulation composite panel production equipment, possible embodiments are described below with the aid of accompanying drawings through non-limiting examples applying the stated principle. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the inner and outer mold frames of this utility model, which are set on the lower platen of the laminator;

[0015] Figure 2 A schematic diagram of the structure for generating foam support blocks and lateral support blocks within the inner mold frame;

[0016] Figure 3 This is a schematic diagram of the structure of the vacuum insulation panel surface foam composite board during the shaping process within the inner mold frame.

[0017] Figure 4 for Figure 3 AA cross-section diagram;

[0018] Figure 5 for Figure 4 A magnified view of part B. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this new embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixation," etc., should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0023] like Figure 1-5A production equipment for a vacuum insulation panel surface foamed composite board includes a laminator, which includes upper and lower pressure plates distributed vertically. An inner mold frame 2 is provided on the lower pressure plate 1, and an outer mold frame 3 is also provided on the lower pressure plate 1. During operation, the inner mold frame 2 is positioned inside the outer mold frame 3. Sealing rings 4 are circumferentially distributed on the upper and lower sides of the outer mold frame 3's frame. Multiple vacuum connection ports 5 for connecting to an external vacuum device are distributed on the frame of the outer mold frame 3; preferably, each vacuum connection port 5 is located near one of the four inner corners of the outer mold frame 3. The height of the outer mold frame 3 on the lower pressure plate 1 is not less than the height of the inner mold frame 2. When the upper and lower pressure plates are pressed together, they respectively seal against the upper and lower sides of the frame of the outer mold frame 3.

[0024] Multiple nozzles 6 are evenly distributed on the lower pressure plate 1 and inside the inner mold frame 2 for quantitatively spraying foaming material to form foam support blocks during operation. During operation, before the vacuum insulation board is placed inside the inner mold frame, the nozzles 6 quantitatively spray a small amount of foaming material to form foam support blocks 61. The thickness of the foam support block 61 is consistent with the thickness of the foam material layer 10 on the corresponding side of the vacuum insulation board in the finished vacuum insulation board 9 surface foam composite board. After the foam support blocks 61 are cured, the vacuum insulation board 9 is placed inside the inner mold frame 2 and placed on each foam support block 61, so that when the foaming material is injected into both sides of the vacuum insulation board through the main nozzle 8, the foaming material is easily dispersed in all directions, and the consistency of foam thickness and density is further ensured.

[0025] Multiple upper nozzles are evenly distributed on the upper pressure plate 1-1 and corresponding to the inner side of the inner mold frame. These nozzles are used to quantitatively spray foaming material during operation to generate foaming support blocks. The function of this structure is the same as above.

[0026] The inner side surfaces of each frame of the inner mold frame 2 are evenly distributed with multiple side nozzles 7 for quantitatively spraying foaming material to form lateral support blocks during operation. During operation, before the vacuum insulation board is placed inside the inner mold frame 2, the side nozzles 7 quantitatively spray a small amount of foaming material and form lateral support blocks 71, which are used to limit the vacuum insulation board 9 subsequently placed into the inner mold frame, so that the foaming layer thickness of the four periphery of the vacuum insulation board composite board is uniform.

[0027] The upper and lower pressure plates are equipped with main nozzles 8 at their centers for quantitatively spraying foaming material during operation to form a foamed layer on the surface of the vacuum insulation board. During operation, after the foaming material is injected into the center of both sides of the vacuum insulation board through the main nozzles 8, the foaming material is evenly diffused to the corresponding sides of the vacuum insulation board under the action of the vacuum pumping device. Example

[0028] Based on Example 1, this example has the following variations:

[0029] The main nozzles on the upper and lower pressure plates each include a needle tip extending from the surface of the upper and lower pressure plates, respectively. The upper and lower nozzles each include a needle head extending from the surface of the upper and lower pressure plates, respectively. The height of the needle tip and needle head extending from the surface of the upper and lower pressure plates is less than the thickness of the foam material layer 10. The structure and shape of the main nozzle and the upper and lower nozzles are similar to those of an injection needle. The foaming material can be a single-component material, such as a polyurethane-based single-component foaming material, which includes polyether polyol and polymeric MDI (isocyanate). The foaming material can also be a two-component material, including isocyanate and polyol. If the foaming material is two-component, then the main nozzle and the upper and lower nozzles both adopt a parallel, adjacent double-needle head structure.

[0030] Before generating the foam support block 61, an aluminum film is laid on the upper and lower pressure plates at the position corresponding to the inner side of the inner mold frame. The needle tip and needle head are used to pierce the aluminum film to facilitate material discharge when the upper and lower nozzles are working. After the composite board is formed, the aluminum film is finally bonded to the outer side of the subsequently generated foam layer, thereby protecting the foam layer and improving the heat preservation effect.

[0031] The needle tip and needle head are connected to a piston rod controlled by a cylinder to control the extension and retraction of the needle tip and needle head relative to the upper and lower pressure plates, respectively. When the machine is stopped or during a process that does not puncture the aluminum film, the cylinder controls the needle tip and needle head to retract, at which time the needle tip and needle head do not protrude from the surface of the upper and lower pressure plates.

[0032] The production method of the vacuum insulation composite panel production equipment includes:

[0033] A. On the lower pressure plate 1, place the inner mold frame 2 inside the outer mold frame 3, and then lay aluminum film in the inner mold frame 2 and at the corresponding positions on the upper pressure plate 1-1 (it can be glued and fixed by water or double-sided tape, etc.).

[0034] B. The cylinder controls the needle tip and needle head to pierce the aluminum film on the upper and lower pressure plates respectively. Then, the upper and lower nozzles respectively spray out foaming material in a metered manner to generate foaming support block 61. At the same time, the side nozzle 7 sprays out a small amount of foaming material in a metered manner and generates side support block 71.

[0035] C. After the foamed support block and the lateral support block have been cured and formed, the vacuum insulation board 9 is placed in the inner mold frame, and then the upper and lower pressure plates are pressed together and sealed with the upper and lower sides of the outer mold frame 3.

[0036] D. The main nozzle 8 injects foaming material into the upper and lower sides of the vacuum insulation panel 9, respectively. Under the action of the vacuum device, the foaming material is evenly diffused until it matures. The temperature of the laminator is controlled to maintain the pressure between the upper and lower plates. The working time and vacuum level of the vacuum device can be determined based on specific experiments.

[0037] E. Open the upper pressure plate, disassemble the inner mold frame, and you can take out the finished composite board.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A production equipment for a vacuum insulation panel surface foamed composite board, comprising a laminator, the laminator including an upper pressure plate and a lower pressure plate distributed vertically, the lower pressure plate being provided with an inner mold frame, characterized in that: The lower pressure plate is also provided with an outer mold frame, and the inner mold frame is located inside the outer mold frame. The upper and lower sides of the outer mold frame are provided with circumferentially distributed sealing rings. The outer mold frame has multiple vacuum connection ports for connecting to an external vacuum device. The height of the outer mold frame on the lower pressure plate is not lower than the height of the inner mold frame. When the upper and lower pressure plates are pressed together, the upper and lower pressure plates are respectively sealed to the upper and lower sides of the outer mold frame.

2. The production equipment according to claim 1, characterized in that: Multiple nozzles are evenly distributed on the lower pressure plate and inside the inner mold frame for quantitatively spraying foaming material during operation to generate foaming support blocks.

3. The production equipment according to claim 2, characterized in that: Multiple upper nozzles are distributed on the upper pressure plate and corresponding to the lower nozzles for quantitatively spraying foaming material during operation to generate foaming support blocks.

4. The production equipment according to claim 2, characterized in that: The inner side surfaces of each frame of the inner mold frame are evenly distributed with multiple side nozzles for quantitatively spraying foaming material during operation to generate lateral support blocks.

5. The production equipment according to claim 3, characterized in that: The upper and lower pressure plates are provided with a main nozzle in the center for quantitatively spraying foaming material during operation to form a foamed layer on the surface of the vacuum insulation board.

6. The production equipment according to claim 5, characterized in that: The main nozzles on the upper and lower pressure plates include needle tips that extend out of the surfaces of the upper and lower pressure plates respectively during operation; the upper and lower nozzles include needle heads that extend out of the surfaces of the upper and lower pressure plates respectively during operation, and the height of the needle tips and needle heads extending out of the surfaces of the upper and lower pressure plates is less than the thickness of the foaming layer.

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