Production process and equipment for vacuum insulated panel with compression ratio smaller than 8%

Abstract

The invention discloses a production process and equipment for a vacuum heat insulation plate with the compression ratio smaller than 8%, and relates to the technical field of vacuum heat insulation plate production.The production equipment comprises a distribution box, and a platen is installed on the upper end face of the distribution box; the feeding mechanism is installed on the platen, a lower die is installed on the feeding mechanism, and the feeding mechanism is used for driving the lower die to conduct feeding; the hot pressing mechanism is installed on the platen and located on the upper side of the feeding mechanism, and an upper mold matched with the lower mold is installed on the hot pressing mechanism; through cooperative arrangement of the carding heating assembly and the linear driving mechanism, uniform heating and softening of the interior of a core material raw material can be achieved, the core material raw material has a better forming effect during hot pressing, carding of the core material raw material can be achieved while heating is conducted, the staggering rate of the core material raw material is reduced, the heat conductivity coefficient of a core material is reduced, and the production efficiency of the core material is improved. And the heat preservation and insulation effects of the vacuum insulated panel prepared from the core material are improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum insulation panel production, and in particular to a production process and equipment for a vacuum insulation panel with a compression ratio less than 8%. Background Art

[0002] Vacuum insulation panel (VIP panel) is a very commonly used vacuum insulation material, which is composed of a filling core material and a vacuum protective surface layer. It can effectively avoid heat transfer caused by air convection, has excellent thermal insulation performance, and is widely used in home appliances, construction and other fields. Glass microfiber is one of the commonly used raw materials for vacuum insulation panel core materials. When preparing glass microfiber core materials, the blown glass microfibers are hot-pressed into block core materials.

[0003] The heating during the hot pressing process is currently generally carried out by blowing hot air onto the surface of the glass microfiber raw material to soften the glass microfiber. However, this heating method makes it difficult to soften the glass microfiber raw material evenly inside and outside. The glass microfiber raw material is prone to rebound after hot pressing and has a high expansion rate, making it difficult to achieve a set compression ratio during packaging. In addition, the glass microfibers need to be arranged as parallel as possible to reduce the longitudinal thermal bridge effect and reduce the thermal conductivity of the product. The current hot pressing equipment directly hot presses the raw materials, and the interlacing rate of the glass microfibers is relatively large, which affects the thermal insulation performance of the product.

[0004] The addition of an appropriate amount of glue to the glass microfiber can assist in the molding of the core material and avoid the rebound of the core material. Currently, the common method is to apply glue on the surface of a certain thickness of glass microfiber raw material, lay the glass microfiber raw material of the same thickness, apply glue and lay again until the set raw material thickness is reached, and then place the raw material in the hot pressing equipment for hot pressing. Due to the long time interval between glue application and hot pressing, part of the glue begins to solidify, and the glue application uniformity is poor, resulting in poor hot pressing shaping effect.

[0005] Therefore, a production process and equipment for a vacuum insulation panel with a compression ratio less than 8% are needed to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a production process and equipment for a vacuum insulation panel with a compression ratio less than 8%, so as to solve the problems existing in the prior art mentioned in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A production device for a vacuum insulation panel with a compression ratio of less than 8%, comprising:

[0009] A distribution box, wherein a table is installed on the upper end surface of the distribution box;

[0010] A feeding mechanism, the feeding mechanism is installed on the table, a lower mold is installed on the feeding mechanism, and the feeding mechanism is used to drive the lower mold to feed;

[0011] A hot pressing mechanism, which is installed on the table and located on the upper side of the feeding mechanism, and an upper mold that cooperates with the lower mold is installed on the hot pressing mechanism;

[0012] A combing and heating component, which is installed on the hot pressing mechanism and is located at the lower side of the upper mold. The combing and heating component is used to comb the core material to make it parallel and to evenly heat the inside of the core material;

[0013] A linear drive mechanism, which is installed on the heat pressing mechanism and is used to drive the combing and heating component to move back and forth in a straight line;

[0014] A glue spraying assembly is installed inside the combing and heating assembly, and is used to evenly spray glue inside the core material.

[0015] Preferably, the feeding mechanism includes a longitudinal slide rail, a feeding plate and a linear slide, the longitudinal slide rail is installed on the table, the feeding plate is installed on the longitudinal slide rail through a slider, a linear slide for driving the feeding plate to move is installed on the table, and the lower mold is installed on the upper end surface of the feeding plate.

[0016] Preferably, the hot pressing mechanism includes a guide column, a top plate and a lifting plate, the guide column is vertically installed at the four sides of the table, the top plate is installed at the top of the guide column, the guide column is slidably connected with a lifting plate, the top plate is installed with a hydraulic cylinder for driving the lifting plate to slide, and the upper mold is installed on the lower end surface of the lifting plate.

[0017] Preferably, the combing heating assembly includes a transverse slide rail, a connecting block and a heat collecting box, the transverse slide rail is installed on the lower end surface of the lifting plate, the connecting block is slidably connected to the transverse slide rail through a slider, the lower end of the connecting block is connected to the heat collecting box, the lower end surface of the heat collecting box is linearly and equidistantly connected to needle tubes, a number of heating air holes are provided on the side walls of the needle tubes, and an air inlet is provided on the heat collecting box.

[0018] Preferably, the glue spray assembly includes a glue spray box, a glue delivery pipe and an atomizing nozzle. The glue spray box is installed inside a thermal collector box. The glue spray box is connected to a plurality of glue delivery pipes, which extend into a needle tube. A plurality of atomizing nozzles are installed on the side wall of the glue delivery pipe. The atomizing nozzle passes through the mounting hole on the side wall of the needle tube. The glue spray box is connected to a glue inlet pipe, which passes through the mounting hole on the thermal collector box.

[0019] Preferably, the linear drive mechanism is a cylinder, the linear drive mechanism is mounted on the lifting plate through a mounting frame, and the output end of the linear drive mechanism is connected to the combing and heating assembly.

[0020] Preferably, two groups of the combing and heating components are installed, the initial positions of the two groups of the combing and heating components are the middle positions of the upper mold, and the two groups of the combing and heating components can move synchronously away from or towards each other.

[0021] Preferably, a protective top cover is installed above the distribution box.

[0022] The present invention also provides a production process of a vacuum insulation panel, comprising the following steps:

[0023] S1: Core material production: Lay the fiber raw material in the lower mold according to the set thickness, use the production equipment to comb, spray glue and hot press the fiber raw material, and the spray glue and heating are all carried out inside the fiber raw material to obtain the vacuum insulation board core material;

[0024] S2: core material bagging: the vacuum insulation panel core material and adsorbent prepared in S1 are packed into packaging bags;

[0025] S3: Vacuum sealing: vacuumizing and sealing the inside of the packaging bag using vacuum sealing equipment to obtain a vacuum insulation panel;

[0026] S4: Rolling: Set appropriate pressure and roll the vacuum insulation panel;

[0027] S5: Folding: fold and fix the excess corners of the packaging bag;

[0028] S6: Testing and packaging: After the rolled vacuum insulation panels are left to stand for a period of time, the vacuum insulation panels are tested for sealing properties, and the vacuum insulation panels that pass the test are packaged to complete the production of the vacuum insulation panels.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention can achieve uniform heating and softening of the core material interior by coordinating the combing heating component with the linear drive mechanism, so that the core material has a better molding effect during hot pressing, and can comb the core material while heating, so that the interlacing rate of the core material is reduced, the thermal conductivity of the core material is reduced, and the thermal insulation effect of the vacuum insulation panel prepared using the core material is improved.

[0031] 2. The present invention can realize the simultaneous glue spraying operation during the heating and combing process of the core material raw material through the coordinated setting of the glue spraying component and the combing and heating component. Compared with the traditional brushing process, the internal atomized glue spraying adopted by the present invention is more uniform, uses less glue, and at the same time improves the effect of glue-assisted shaping.

[0032] 3. The combination of the production equipment and the production process in the present invention can use the production equipment to prepare a vacuum insulation board core material with uniform heat pressing and stable state. The vacuum insulation board prepared using the core material can have a compression ratio of less than 8%, so that the vacuum insulation board produced by this process has excellent thermal insulation performance and anti-breakage and expansion performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a production process flow chart of the present invention.

[0034] Figure 2 It is a schematic diagram of the overall structure of the production equipment of the present invention.

[0035] Figure 3 This is a schematic diagram of the internal structure of the protective top cover of the production equipment of the present invention.

[0036] Figure 4 It is a schematic diagram of the hot pressing mechanism and feeding mechanism of the production equipment of the present invention.

[0037] Figure 5 It is a schematic diagram of the bottom structure of the hot pressing mechanism of the production equipment of the present invention.

[0038] Figure 6 This is a schematic diagram of the structure of the combing and heating component of the production equipment of the present invention.

[0039] Figure 7 It is a schematic diagram of the cross-sectional structure of the combing and heating component of the production equipment of the present invention.

[0040] Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at point A in the middle.

[0041] In the figure: 1. distribution box; 2. table; 3. feeding mechanism; 31. longitudinal slide rail; 32. feeding plate; 33. linear slide; 4. lower mold; 5. hot pressing mechanism; 51. guide column; 52. top plate; 53. lifting plate; 54. hydraulic cylinder; 6. upper mold; 7. combing heating assembly; 71. transverse slide rail; 72. connecting block; 73. heat collecting box; 74. needle tube; 75. heating air hole; 76. air inlet; 8. linear drive mechanism; 81. mounting frame; 9. glue spraying assembly; 91. glue spraying box; 92. glue delivery hose; 93. atomizing nozzle; 94. glue inlet hose; 10. protective top cover. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] See also Figure 1-8 , the present invention provides the following technical solutions:

[0044] A production device for a vacuum insulation panel with a compression ratio of less than 8%, comprising: a distribution box 1, a table 2 is installed on the upper end surface of the distribution box 1, a protective top cover 10 is installed above the distribution box 1, and the protective top cover 10 is composed of a profile frame and an upper baffle for protecting operators.

[0045] A feeding mechanism 3, wherein the feeding mechanism 3 is installed on the table 2, and a lower mold 4 is installed on the feeding mechanism 3, and the feeding mechanism 3 is used to drive the lower mold 4 to feed; the feeding mechanism 3 includes a longitudinal slide rail 31, a feeding plate 32 and a linear slide 33, the longitudinal slide rail 31 is installed on the table 2, the feeding plate 32 is installed on the longitudinal slide rail 31 through a slider, a linear slide 33 for driving the feeding plate 32 to move is installed on the table 2, and the lower mold 4 is installed on the upper end surface of the feeding plate 32; the setting of the feeding mechanism 3 is convenient for the staff to load the materials, and can transport the lower mold 4 that has been loaded to the bottom of the upper mold 6.

[0046] A hot pressing mechanism 5 is installed on the table 2 and is located on the upper side of the feeding mechanism 3. An upper mold 6 that cooperates with the lower mold 4 is installed on the hot pressing mechanism 5; the hot pressing mechanism 5 includes a guide column 51, a top plate 52 and a lifting plate 53. The guide column 51 is vertically installed on the four sides of the table 2, the top plate 52 is installed on the top of the guide column 51, and the guide column 51 is slidably connected with the lifting plate 53. A hydraulic cylinder 54 for driving the lifting plate 53 to slide is installed on the top plate 52, and the upper mold 6 is installed on the lower end surface of the lifting plate 53; the hydraulic cylinder 54 can drive the upper mold 6 to close the mold with the lower mold 4 to realize hot pressing processing of the core material.

[0047] A combing and heating component 7 is installed on the hot pressing mechanism 5 and is located at the lower side of the upper mold 6. The combing and heating component 7 is used to comb the core material in parallel and to evenly heat the inside of the core material. The combing and heating component 7 includes a transverse slide rail 71, a connecting block 72 and a heat collecting box 73. The transverse slide rail 71 is installed on the lower end surface of the lifting plate 53. The connecting block 72 is slidably connected to the transverse slide rail 71 through a slider. The lower end of the connecting block 72 is connected to the heat collecting box 73. The lower end surface of the heat collecting box 73 is linearly and equidistantly connected to a needle tube 74. A plurality of heating air holes 75 are provided on the side wall of the needle tube 74. An air inlet 76 is provided on the heat collecting box 73. A hot air source is connected to the air inlet 76, and the needle tube 74 enters the core material and moves horizontally. The heating air hole 75 outputs hot air to evenly heat and soften the core material. The needle tube 74 can comb the core material to reduce the interlacing rate of the core material.

[0048] The combing and heating components 7 are installed in two groups, and the initial positions of the two groups of combing and heating components 7 are the middle positions of the upper mold 6, and the two groups of combing and heating components 7 can move synchronously away from or towards each other; the combing and heating components 7 are moved from the middle to both sides, that is, the core material can be evenly force-combed without positioning the core material, which can shorten the heating time and reduce the temperature change, which is beneficial to compression molding.

[0049] A linear drive mechanism 8 is installed on the hot pressing mechanism 5, and is used to drive the combing and heating component 7 to move back and forth in a straight line; the linear drive mechanism 8 is a cylinder, and the linear drive mechanism 8 is installed on the lifting plate 53 through a mounting frame 81, and the output end of the linear drive mechanism 8 is connected to the combing and heating component 7; the cylinders on both sides of the lifting plate 53 can drive the corresponding combing and heating components 7 to move away from or towards each other.

[0050] A glue spraying assembly 9, which is installed inside the combing and heating assembly 7, and is used to uniformly spray glue inside the core material; the glue spraying assembly 9 includes a glue spraying box 91, a glue delivery pipe 92 and an atomizing nozzle 93, the glue spraying box 91 is installed inside the heat collecting box 73, and the glue spraying box 91 is connected with a plurality of glue delivery pipes 92, and the glue delivery pipes 92 extend into the needle tube 74, and the side wall of the glue delivery pipe 92 is installed with a plurality of atomizing nozzles 93, and the atomizing nozzles 93 penetrate into the mounting hole of the side wall of the needle tube 74. Inside, the glue spray box 91 is connected with a glue inlet pipe 94, and the glue inlet pipe 94 passes through the mounting hole on the heat collecting box 73; by designing the glue spray component 9 inside the combing and heating component 7, the temperature of the combing and heating component 7 can ensure that the glue in the glue spray component 9 is in a relatively thin state, which is conducive to the atomization and spraying of the glue. In addition, the atomizing nozzle 93 is combined with the needle tube 74, and the glue spraying operation is carried out simultaneously during the combing and heating process of the needle tube 74, which shortens the time from glue addition to compression, and the glue spraying is more uniform, which is conducive to the hot pressing and shaping of the core material.

[0051] The present invention also provides a production process of a vacuum insulation panel, comprising the following steps:

[0052] S1: core material production: laying fiber raw materials in a lower mold 4 according to a set thickness, combing, glue spraying and hot pressing the fiber raw materials using production equipment, the glue spraying and heating are both performed inside the fiber raw materials, and the vacuum insulation board core material is obtained;

[0053] S2: core material bagging: the vacuum insulation panel core material and adsorbent prepared in S1 are packed into packaging bags;

[0054] S3: Vacuum sealing: vacuumizing and sealing the inside of the packaging bag using vacuum sealing equipment to obtain a vacuum insulation panel;

[0055] S4: Rolling: Set appropriate pressure and roll the vacuum insulation panel;

[0056] S5: Folding: fold and fix the excess corners of the packaging bag;

[0057] S6: Testing and packaging: After the rolled vacuum insulation panels are left to stand for a period of time, the vacuum insulation panels are tested for sealing properties, and the vacuum insulation panels that pass the test are packaged to complete the production of the vacuum insulation panels.

[0058] Through the combination of the production equipment and the production process of the present invention, a vacuum insulation board core material with uniform heat pressing and stable state can be prepared. By vacuum packaging the core material into a packaging bag, a vacuum insulation board with a compression ratio of less than 8% can be produced. The production standard is higher than the industry standard and has excellent thermal insulation performance and damage and anti-expansion performance.

[0059] The working process of the production equipment in the present invention is as follows:

[0060] When it is necessary to produce glass microfiber core material, the glass microfiber raw material of corresponding thickness is placed in the lower mold 4, and the linear slide 33 drives the feeding plate 32 and the lower mold 4 to enter under the hot pressing mechanism 5, so that the lower mold 4 is located directly below the upper mold 6.

[0061] The hydraulic cylinder 54 drives the lifting plate 53 to move downward, and the lifting plate 53 drives the combing and heating assembly 7 to move downward synchronously, so that the needle tube 74 enters the glass microfiber raw material, and the hot air source is supplied to the heat collecting box 73 through the air inlet 76. The hot air is blown out through the heating air hole 75 on the needle tube 74, so as to achieve uniform heating and softening of the inside of the glass microfiber raw material. At the same time, the linear drive mechanism 8 drives the corresponding combing and heating assemblies 7 to move away from each other. The needle tube 74 can comb the glass microfiber raw material while outputting hot air, so that the interlacing rate of the glass microfiber raw material is reduced, and the thermal conductivity of the core material is reduced.

[0062] During the process of heating and combing the glass microfiber raw material, glue with a certain pressure is supplied to the glue spray box 91 through the glue inlet pipe 94, and the glue is atomized and sprayed out from the atomizing nozzle 93 through the glue delivery pipe 92. As the needle tube 74 moves at a uniform speed, the glue in the glass microfiber raw material is more evenly distributed, the amount of glue used is reduced, and the shaping effect is improved; after the above process is completed, the combing heating component 7 moves to the edge position of the lifting plate 53 and separates from the lower mold 4, and the hydraulic cylinder 54 drives the upper mold 6 to move downward and close the mold with the lower mold 4 to achieve hot pressing and shaping of the glass microfiber raw material. After maintaining the pressure for a certain period of time, the mold is opened to obtain the glass microfiber core material.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for vacuum insulation panels with a compression ratio of less than 8%, characterized in that: include: A distribution box (1), wherein a table (2) is installed on the upper end surface of the distribution box (1); A feeding mechanism (3), the feeding mechanism (3) is mounted on the table (2), a lower mold (4) is mounted on the feeding mechanism (3), and the feeding mechanism (3) is used to drive the lower mold (4) to feed materials; A hot pressing mechanism (5), the hot pressing mechanism (5) is installed on the table (2) and is located on the upper side of the feeding mechanism (3), and an upper mold (6) that cooperates with the lower mold (4) is installed on the hot pressing mechanism (5); A combing and heating component (7), the combing and heating component (7) is installed on the hot pressing mechanism (5) and is located at the lower side of the upper mold (6), and the combing and heating component (7) is used to comb the core material in parallel and to evenly heat the inside of the core material; A linear drive mechanism (8), the linear drive mechanism (8) being mounted on the heat pressing mechanism (5), and the linear drive mechanism (8) being used to drive the combing and heating component (7) to move back and forth in a linear manner; A glue spraying component (9), the glue spraying component (9) is installed inside the combing and heating component (7), and the glue spraying component (9) is used to evenly spray glue inside the core material.

2. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 1, characterized in that: The feeding mechanism (3) comprises a longitudinal slide rail (31), a feeding plate (32) and a linear slide (33); the longitudinal slide rail (31) is mounted on a table (2); the feeding plate (32) is mounted on the longitudinal slide rail (31) via a slider; a linear slide (33) for driving the feeding plate (32) to move is mounted on the table (2); and the lower mold (4) is mounted on the upper end surface of the feeding plate (32).

3. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 1, characterized in that: The hot pressing mechanism (5) comprises a guide column (51), a top plate (52) and a lifting plate (53); the guide column (51) is vertically mounted on the four sides of the table (2); the top plate (52) is mounted on the top of the guide column (51); the guide column (51) is slidably connected to the lifting plate (53); a hydraulic cylinder (54) for driving the lifting plate (53) to slide is mounted on the top plate (52); and the upper mold (6) is mounted on the lower end surface of the lifting plate (53).

4. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 3, characterized in that: The combing heating component (7) comprises a transverse slide rail (71), a connecting block (72) and a heat collecting box (73); the transverse slide rail (71) is mounted on the lower end surface of the lifting plate (53); the connecting block (72) is slidably connected to the transverse slide rail (71) via a slider; the lower end of the connecting block (72) is connected to the heat collecting box (73); the lower end surface of the heat collecting box (73) is linearly and equidistantly connected to a needle tube (74); a plurality of heating air holes (75) are provided on the side wall of the needle tube (74); and an air inlet (76) is provided on the heat collecting box (73).

5. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 4, characterized in that: The glue spraying assembly (9) comprises a glue spraying box (91), a glue delivery pipe (92) and an atomizing nozzle (93). The glue spraying box (91) is installed inside the heat collecting box (73). The glue spraying box (91) is connected with a plurality of glue delivery pipes (92). The glue delivery pipes (92) extend into the needle tube (74). The side wall of the glue delivery pipe (92) is installed with a plurality of atomizing nozzles (93). The atomizing nozzles (93) penetrate into the mounting hole of the side wall of the needle tube (74). The glue spraying box (91) is connected with a glue inlet pipe (94), and the glue inlet pipe (94) penetrates through the mounting hole on the heat collecting box (73).

6. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 3, characterized in that: The linear drive mechanism (8) is a cylinder, and the linear drive mechanism (8) is mounted on the lifting plate (53) via a mounting frame (81). The output end of the linear drive mechanism (8) is connected to the combing heating component (7).

7. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 1, characterized in that: The combing and heating components (7) are installed in two groups, the initial positions of the two groups of combing and heating components (7) are the middle positions of the upper mold (6), and the two groups of combing and heating components (7) can move synchronously away from or towards each other.

8. The production equipment of a vacuum insulation panel with a compression ratio less than 8% according to claim 1, characterized in that: A protective top cover (10) is installed above the distribution box (1).

9. A process for producing a vacuum insulation panel using the production equipment according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: core material production: laying fiber raw materials in a set thickness in a lower mold (4), combing, glue spraying and hot pressing the fiber raw materials using production equipment, with glue spraying and heating being performed inside the fiber raw materials, to obtain a vacuum insulation board core material; S2: core material bagging: the vacuum insulation panel core material and adsorbent prepared in S1 are packed into packaging bags; S3: Vacuum sealing: vacuum the inside of the packaging bag and seal it using vacuum sealing equipment to obtain a vacuum insulation panel; S4: Rolling: Set appropriate pressure and roll the vacuum insulation panel; S5: Folding: fold and fix the excess corners of the packaging bag; S6: Testing and packaging: After the rolled vacuum insulation panels are left to stand for a period of time, the vacuum insulation panels are tested for sealing properties, and the vacuum insulation panels that pass the test are packaged to complete the production of the vacuum insulation panels.

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