Refrigerator box skin having multiple layers of glass fiber and method of manufacturing and forming apparatus thereof

Abstract

The application discloses a refrigeration box skin with multiple layers of glass fibers and a manufacturing method and forming equipment thereof, and steps are as follows: S1, rolling and coating a glue layer on one side of a glass steel plate; S2, laying a layer of soft insulation board on the glue layer of the glass steel plate; S3, rolling and coating a glue layer on one side of the soft insulation board; S4, laying a layer of glass fiber cloth on the glue layer of the soft insulation board, and part of the glass fibers are needled into the soft insulation board; S5, laying a layer of glass fiber and glue repairing material on the glass fiber cloth and rolling and flattening to obtain a semi-finished product; S6, laying a layer of metal mesh on the glass fiber surface of one semi-finished product, and the metal mesh is provided with barbs on two sides; S7, laying another semi-finished product on the metal mesh and rolling to obtain a finished product. The forming equipment comprises: the discharge ends of two semi-finished product processing devices are oppositely arranged; and a metal mesh unwinding device and a pair of rollers are respectively arranged above and below between the discharge ends of the two semi-finished product processing devices.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerated box, in particular to a refrigerated box skin with multiple layers of glass fiber and a manufacturing method and forming equipment thereof. BACKGROUND

[0002] The refrigerated truck is mainly used for transporting frozen goods such as meat or fresh goods such as fruits or low-temperature preserved goods such as medicines, and is a closed van special transport vehicle. The refrigerated truck is composed of a refrigerating unit for cooling, a heat-insulated van refrigerated box for containing goods, and a vehicle body for moving. Among them, the refrigerating unit is used for temperature control, and the van body is used for temperature maintenance. If the refrigerating unit is the provider of energy, then the van body is the storage of energy. Among the three parts of the refrigerated truck, the refrigerating unit and the refrigerated box have a greater impact on the transported goods and play a key role.

[0003] The main body of the refrigerated box is a box composed of insulation boards. Generally, the insulation board is a full-closed polyurethane board block bonded with glass steel structure. The glass steel is used as the skin, unsaturated polyester resin is used as the bonding agent, and a cushion layer is additionally added. The internal insulation material uses rigid polyurethane foam. Therefore, in addition to the internal insulation material, the skin is also crucial for the heat insulation of the van body. Generally, the thickness of the skin will be changed according to the required temperature of the use environment of the van body, such as cold or deep cold. Generally, at 20℃ and below, only one to two layers of insulation glass fiber layer with a thickness of about 1cm can meet the requirements. When the temperature is lower, the glass fiber layer needs to be appropriately thickened to ensure that the insulation effect is achieved, the material investment is minimized, the thickness of the skin is reduced, and the storage space is maximized.

[0004] Therefore, when manufacturing the skin, a relatively thin glass fiber layer is often used to better adapt to the adjustment of the thickness of the skin. However, because multiple layers of glass fiber layers need to be glued in multiple ways, under the influence of a large temperature difference between the inside and the outside in a hot environment, the multiple layers of glass fiber layers in the skin often appear to be separated and loose, the heat insulation effect is poor, and the use of the refrigerated box is not conducive. SUMMARY

[0005] The present application relates to the technical field of refrigerated box, in particular to a refrigerated box skin with multiple layers of glass fiber and a manufacturing method and forming equipment thereof.

[0006] To solve the above technical problems, the present application adopts the following technical scheme:

[0007] A refrigerated box skin with multiple layers of glass fiber and a manufacturing method thereof, comprising the following steps:

[0008] S1, rolling glue on one side of the glass steel plate and forming a glue layer without blank;

[0009] S2, laying a soft insulation board on the glue layer of the glass steel plate and rolling at least once;

[0010] S3, rolling glue on one side of the soft insulation board and forming a glue layer without blank;

[0011] S4, laying a glass fiber cloth on the glue layer of the soft insulation board, and partially inserting the glass fiber into the soft insulation board by needling;

[0012] S5, laying a layer of glass fiber and glue repair on the glass fiber cloth and rolling, to obtain a semi-finished product;

[0013] S6, laying a layer of metal mesh on one side of the semi-finished product, and the metal mesh has barbs on both sides;

[0014] S7, laying another semi-finished product on the metal mesh and rolling at least once to obtain a finished product skin;

[0015] S8, drying and shaping the finished product skin and storing it in the warehouse.

[0016] Further technical solutions are: in the S5, the ratio of glue to glass fiber in the repair is 1:1.5-3.5.

[0017] Further technical solutions are: the soft insulation board is an elastoplastic insulation material.

[0018] Further technical solutions are: the barb height of the metal mesh does not exceed half the thickness of the glass fiber cloth.

[0019] A refrigeration box skin with multiple layers of glass fiber, the refrigeration box skin comprising:

[0020] a glass steel plate;

[0021] a soft insulation board, two of which are respectively glued to the surfaces of the two glass steel plates;

[0022] a glass fiber cloth, two of which are respectively glued to the surfaces of the two soft insulation boards, and part of the glass fiber cloth is located in the soft insulation board;

[0023] a repair layer, two of which are respectively laid on the two glass fiber cloths;

[0024] a metal mesh layer, which is located between the two repair layers, and the barbs on the metal mesh layer penetrate the repair layers and are located in the glass fiber cloths.

[0025] A cold box skin forming device with multi-layer glass fiber, characterized in that the forming device comprises:

[0026] A semi-finished product processing device, the discharge ends of the two semi-finished product processing devices are oppositely arranged;

[0027] A metal mesh unwinding device is arranged above the discharge ends of the two semi-finished product processing devices;

[0028] A pair of rollers is arranged below the discharge ends of the two semi-finished product processing devices.

[0029] A further technical solution is that the semi-finished product processing device comprises a conveying device and, arranged in sequence on the conveying device according to the material advancing direction, a glass fiber reinforced plastic plate unwinding device, a first glue rolling device, a soft insulation board unwinding device, a compression roller, a second glue rolling device, a glass fiber cloth unwinding device, a needle punching machine, a patch laying machine, a flattening roller and a reversing roller.

[0030] A further technical solution is that the needle punching machine comprises a horizontal plate, a cylinder, a needle plate and a filter plate, the horizontal plate and the filter plate are both mounted on the conveying device, the cylinder is vertically mounted downward on the horizontal plate, the needle plate is mounted on the output end of the cylinder, and the needle plate is arranged correspondingly to the filter plate, and the filter plate is provided with needle holes matched with the needle plate.

[0031] A further technical solution is that the patch laying machine comprises an insulation box, a stirrer, a discharge nozzle and a baffle, the insulation box is mounted on the conveying device, the stirrer is mounted on the insulation box, and the stirring end of the stirrer is located in the insulation box, the discharge nozzle is mounted on the bottom discharge port of the insulation box, and a plurality of baffles are vertically mounted on the bottom of the insulation box, and the baffles are located at the discharge end of the discharge nozzle.

[0032] Compared with the prior art, the present application can at least achieve one of the following beneficial effects:

[0033] The present application provides a cold box skin with multi-layer glass fiber and a manufacturing method thereof. The cold box skin produced by the method can bond the multi-layer glass fiber cloth more tightly. Even if the internal cold and external hot environment causes the glue to fail or deteriorate, the multi-layer glass fiber cloth will not easily separate or loosen, ensuring the insulation and heat insulation effect of the skin. In addition, the outermost glass fiber cloth can form a connection relationship other than adhesion with the soft insulation board, further improving the firmness of each layer of the cold box skin and enhancing the insulation effect.

[0034] A cold box skin forming device with multi-layer glass fiber is also provided, which can perform one-time forming processing on the cold box skin with multi-layer glass fiber, improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A structure diagram of a refrigeration box skin with multiple layers of glass fiber according to the present application.

[0036] Figure 2 A structure diagram of a forming device of a refrigeration box skin with multiple layers of glass fiber according to the present application.

[0037] Figure 3 A structure diagram of a needle punching machine according to the present application. Figure 2

[0038] Figure 4 A structure diagram of a prosthetic material laying machine according to the present application. Figure 2

[0039] Reference signs: 1, glass fiber reinforced plastic plate; 2, soft insulation board; 3, glass fiber cloth; 4, repair layer; 5, metal mesh layer; 6, metal mesh unwinding device; 7, counter roller; 8, conveying device; 9, glass fiber reinforced plastic plate unwinding device; 10, first glue rolling device; 11, soft insulation board unwinding device; 12, pressing roller; 14, second glue rolling device; 14, glass fiber cloth unwinding device; 15, needle punching machine; 151, horizontal plate; 152, air cylinder; 153, needle plate; 154, filter plate; 16, prosthetic material laying machine; 161, insulation box; 162, stirrer; 163, discharge nozzle; 164, baffle; 17, flattening roller; 18, reversing roller. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0042] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0043] ​​It should be noted that similar reference numerals and letters refer to like items in the several figures of the drawing described below, and thus, once an item is defined in one figure, it is not necessary to further define and explain it in the subsequent figures.

[0044] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0046] Embodiment one:

[0047] The embodiment, for example Figure 1 As shown in a method for manufacturing a refrigeration box skin with multiple layers of glass fibers, comprising the following steps:

[0048] S1, rolling glue on one side of the glass steel plate to form a glue layer without blank;

[0049] S2, lay a layer of soft insulation board on the glue layer of the glass steel plate, and roll at least once;

[0050] S3, rolling glue on one side of the soft insulation board to form a glue layer without blank;

[0051] S4, lay a layer of glass fiber cloth on the glue layer of the soft insulation board, and pierce part of the glass fiber into the soft insulation board by needling;

[0052] S5, lay a layer of glass fiber and glue repair on the glass fiber cloth and roll flat to obtain a semi-finished product;

[0053] S6, lay a layer of metal mesh on the glass fiber surface of a semi-finished product, and the metal mesh is provided with barbs on both sides;

[0054] S7, laying another semi-finished product on the metal net and rolling at least once to obtain a finished skin;

[0055] S8, drying and shaping the finished skin and then storing it.

[0056] Further technical solutions are: the ratio of glue to glass fiber in the patching material is 1:1.5-3.5, which prevents the patching material from being too thin and dripping when the semi-finished product is reversed.

[0057] Further technical solutions are: the soft insulation board is an elastoplastic insulation material.

[0058] Further technical solutions are: the height of the barbs of the metal net does not exceed half the thickness of the glass fiber cloth.

[0059] A cold box skin with multiple layers of glass fiber, the cold box skin comprising: Figure 1 as shown

[0060] a glass steel plate 1;

[0061] a soft insulation board 2, two soft insulation boards 2 are respectively glued to the surfaces of the two glass steel plates 1;

[0062] a glass fiber cloth 3, two glass fiber cloths 3 are respectively glued to the surfaces of the two soft insulation boards 2, and the glass fiber cloth 3 is partially located in the soft insulation board 2;

[0063] a patching layer 4, two patching layers 4 are respectively laid on the two glass fiber cloths 3;

[0064] a metal net layer 5, the metal net layer 5 is located between the two patching layers 4, and the barbs on the metal net layer 5 penetrate the patching layer 4 and are located in the glass fiber cloth 3.

[0065] In the glass steel plate 1 (hard texture) inside glue a layer of soft insulation board 2 (soft texture), on the one hand to further play a heat insulation effect, on the other hand can be used as the outermost layer of glass fiber cloth 3 of the connection basis, the outermost layer of glass fiber cloth 3 of the part of the fiber together with the glue into the soft insulation board 2, the soft insulation board 2 due to its own contraction force will part of the fiber to stay and clamp, the soft insulation board 2 and the outermost layer of glass fiber cloth 3 do further connection and firm reinforcement, because the outermost layer of glass fiber cloth 3 part into the soft insulation board 2, will cause the surface of the outer layer of glass fiber cloth 3 uneven, more with the main concave, at this time need to use the broken glass fiber and glue repair to fill up and roll flat, then according to the skin (insulation layer) thickness requirements, calculate the need to lay several layers of glass fiber cloth 3, then in each layer of glass fiber cloth 3 between the sandwich metal mesh layer 5, on the one hand to play a role in structure reinforcement; the other hand through the metal mesh layer 5 on the barb through the repair layer 4 and into the glass fiber cloth 3, to the glass fiber cloth 3 play the role of anchoring, at the same time in the adhesion of the glue, make the glass fiber cloth 3 combined more closely and firmly. The use of the method produced by the refrigeration box skin, can be more closely bonded together with multiple layers of glass fiber cloth, even if the influence of the temperature difference of the inner cold and outer hot environment, resulting in the failure or deterioration of the glue, multiple layers of glass fiber cloth will not easily separate or loose, to ensure the insulation effect of the skin; in addition, the outermost layer of glass fiber cloth can produce a connection relationship other than the adhesive with the soft insulation board, further improve the firmness of the refrigeration box skin each layer, improve the insulation effect.

[0066] Example two:

[0067] The present embodiment as shown in Figure 2 、 Figure 3 and Figure 4 , a refrigeration box skin forming device with multiple layers of glass fiber, the forming device comprises:

[0068] two semi-finished product processing devices, the discharge end of the two semi-finished product processing devices are oppositely arranged;

[0069] metal mesh unwinding device 6, the metal mesh unwinding device 6 is located above the discharge end between the two semi-finished product processing devices;

[0070] the roller 7, the roller is located below the discharge end between the two semi-finished product processing devices.

[0071] the semi-finished product processing device comprises a conveying device 8 and a glass steel plate unwinding device 9, a glue rolling device 10, a soft insulation board unwinding device 11, a pressure roller 12, a second glue rolling device 13, a glass fiber cloth unwinding device 14, a needle punching machine 15, a repair material laying machine 16, a rolling roller 17 and a reversing roller 18 arranged in sequence on the conveying device 8 according to the material advancing direction.

[0072] The glass steel plate itself has certain folding resistance, and is generally in the form of a roll when entering the factory. The glass steel plate unwinding device 9 is used to place the glass steel plate on the conveying device 8, which can be a belt conveyor. A first glue rolling device 10 applies glue to the glass steel plate (usually in the mode of rolling glue). The soft insulation board unwinding device 11 is placed on the glass steel plate. The soft insulation board is extruded and bonded by the pressure roller 12. Then, the second glue rolling device 13 applies glue to the soft insulation board. The glass fiber cloth unwinding device 14 places the glass fiber cloth on the soft insulation board. The needle machine 15 stings part of the fibers of the glass fiber cloth into the soft insulation board. When stinging, a cross bar is arranged at both ends (inlet and outlet ends) of the needle machine 15 to prevent the needle machine 15 from lifting the glass fiber cloth. The patch laying machine 16 uses a patch to repair the recess left after needling and uses a rolling roller 17 to roll it flat. Under the action of the reversing roller 18, a semi-finished product is obtained. The directions of the two semi-finished products are reversed. The metal mesh unwinding device 6 continuously provides metal mesh between the two reversed semi-finished products. Under the action of the counter roller 7, the two semi-finished products and the metal mesh are pressed together, and then dried by a drying device (not shown in the figure) to obtain a skin finished product. From feeding to discharging, there is no turnover, one-time forming, fast processing speed and controllable quality.

[0073] Preferably (with reference to Figure 3 ): The needle machine 15 includes a cross plate 151, a cylinder 152, a needle plate 153, and a filter plate 154. The cross plate 151 and the filter plate 154 are both installed on the conveying device 8. The cylinder 152 is vertically downwardly installed on the cross plate 151. The needle plate 153 is installed on the output end of the cylinder 152, and the needle plate 153 is arranged corresponding to the filter plate 154. The filter plate 154 is provided with needle holes matched with the needle plate 153.

[0074] The cylinder 152 drives the needle plate 153 to move in the vertical direction under the limiting of the guide rod (not labeled). Figure 3 The fine needles on the needle plate 153 sting part of the glass fibers into the soft insulation board. Under the shrinkage effect of the material of the soft insulation board itself, part of the glass fibers are left in the sting hole.

[0075] Preferably (with reference to Figure 4 ): The patch laying machine 16 includes an insulation box 161, a stirrer 162, a discharge nozzle 163, and a baffle 164. The insulation box 161 is installed on the conveying device 8. The stirrer 162 is installed on the insulation box 161, and the stirring end of the stirrer 162 is located in the insulation box 161. The discharge nozzle 163 is installed at the bottom discharge port of the insulation box 161. A plurality of baffles 164 are vertically installed at the bottom of the insulation box 161, and the baffles 164 are located at the discharge end of the discharge nozzle 163.

[0076] The stirrer 162 is used to mix the glass fiber and glue evenly, the discharge nozzle 163 is used to lay the repair material on the glass fiber cloth evenly, and the baffle 164 is used to spread the repair material

[0077] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent features by those skilled in the art, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for manufacturing a refrigerator lining with multiple layers of glass fiber, characterized in that: Includes the following steps: S1. Apply adhesive to one side of the fiberglass sheet to form a gel coat layer without any gaps; S2. Lay a layer of soft insulation board on the gel coat layer of the fiberglass sheet and roll it at least once. S3. Apply glue to one side of the flexible insulation board to form a gel coat layer without gaps; S4. Lay a layer of fiberglass cloth on the gel coat layer of the flexible insulation board, and insert some of the fiberglass into the flexible insulation board by needle punching. S5. Lay a layer of broken glass fiber and glue repair material on the glass fiber cloth and roll it flat to obtain a semi-finished product; S6. Lay a layer of metal mesh on a semi-finished glass fiber surface, with barbs on both sides of the metal mesh; S7. Lay the glass fiber surface of another semi-finished product onto a metal mesh and roll it at least once to obtain the finished skin. S8. After drying and shaping the finished skin, put it into storage.

2. The method for manufacturing a refrigerator lining with multiple layers of glass fiber according to claim 1, characterized in that: In step S5, the ratio of glue to broken glass fiber in the repair material is 1:1.5 to 3.

5.

3. The method for manufacturing a refrigerator lining with multiple layers of glass fiber according to claim 1, characterized in that: The flexible insulation board is made of rubber and plastic insulation material.

4. The method for manufacturing a refrigerator lining with multiple layers of glass fiber according to claim 1, characterized in that: The barb height of the metal mesh shall not exceed half the thickness of the fiberglass cloth.

5. A refrigerator lining with multiple layers of glass fiber, characterized in that, The refrigerator's outer skin includes: Fiberglass sheet (1); Soft insulation board (2), two soft insulation boards (2) are respectively glued to the surface of two fiberglass boards (1); Fiberglass cloth (3), two of the fiberglass cloths (3) are respectively glued to the surface of two of the soft insulation boards (2), and the fiberglass cloth (3) is partially located inside the soft insulation board (2); Repair layer (4), the two repair layers (4) are respectively laid on the two glass fiber cloths (3); A metal mesh layer (5) is located between the two repair layers (4), and the barbs on the metal mesh layer (5) pass through the repair layer (4) and are located inside the glass fiber cloth (3).

6. A refrigerator skin forming device with multiple layers of glass fiber, characterized in that, The molding equipment includes: A semi-finished product processing device, wherein the discharge ends of two semi-finished product processing devices are arranged opposite to each other; Metal mesh unwinding device (6), which is located above the discharge ends of the two semi-finished product processing devices; The roller pair (7) is located below the discharge ends of the two semi-finished product processing devices. The semi-finished product processing device includes a conveying device (8) and a fiberglass sheet unwinding device (9), a first-stage glue rolling device (10), a soft insulation board unwinding device (11), a pressure roller (12), a second-stage glue rolling device (13), a fiberglass cloth unwinding device (14), a needle punching machine (15), a repair material laying machine (16), a flattening roller (17), and a reversing roller (18) arranged sequentially on the conveying device (8) in the direction of material movement.

7. A refrigerator skin forming device with multiple layers of glass fiber according to claim 6, characterized in that: The acupuncture machine (15) includes a horizontal plate (151), a cylinder (152), a needle plate (153), and a filter plate (154). The horizontal plate (151) and the filter plate (154) are both mounted on the conveying device (8). The cylinder (152) is mounted vertically downward on the horizontal plate (151). The needle plate (153) is mounted on the output end of the cylinder (152), and the needle plate (153) is correspondingly arranged with the filter plate (154). The filter plate (154) is provided with needle holes that are compatible with the needle plate (153).

8. A refrigerator skin forming device with multiple layers of glass fiber according to claim 6, characterized in that: The repair material laying machine (16) includes an insulation box (161), a mixer (162), a discharge nozzle (163), and baffles (164). The insulation box (161) is installed on the conveying device (8). The mixer (162) is installed on the insulation box (161), and the mixing end of the mixer (162) is located inside the insulation box (161). The discharge nozzle (163) is installed at the bottom discharge port of the insulation box (161). Multiple baffles (164) are vertically installed at the bottom of the insulation box (161), and the baffles (164) are located at the discharge end of the discharge nozzle (163).

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