A production system for cold chain insulation boards

Abstract

The present invention discloses a production system for cold chain insulation board, including a feeding mechanism, a heat pasting device, a gluing mechanism, a face paper gluing mechanism, a trimming mechanism, a cutting device, a stomping platform and a control device which are sequentially arranged in front and back. During operation, one side of the EPS board core is hot pressed with a layer of aluminum foil in the heat pasting device, and the other side of the EPS board core is pressed with a layer of kraft paper through the gluing mechanism and the face paper gluing mechanism, and finally, after fixed width trimming and fixed length cutting, a thermal insulation KT board is obtained. The production system of the cold chain insulation board can improve the laminating effect between the face paper and the board core and ensure the bonding strength.

Description

Technical Field

[0001] The present invention relates to the field of cold chain technology, and in particular to a production system for cold chain insulation boards. Background Art

[0002] Cold chain logistics refers to a special supply chain system in which frozen foods, special biological products, and medicines are kept in a specified low-temperature environment at all stages from production, storage, transportation, sales to consumption, in order to ensure product quality and reduce food spoilage due to high temperature.

[0003] KT board is a new type of material made of EPS board core with surface coating or paper lamination. The board is straight, light, not easy to deteriorate, and easy to process. It is widely used in advertising display promotion, aircraft models, architectural decoration, culture and art, and packaging. The EPS board core is a polystyrene foam plastic board with a closed-cell structure made by pre-foaming expandable polystyrene beads and then heating and molding in a mold. The board also has (1) excellent thermal insulation (2) high compressive strength and strong impact resistance, with excellent high-strength compressive resistance (3) excellent waterproof and moisture-proof (4) light texture and easy to use (5) low price. Therefore, people want to use the above characteristics of EPS board to apply it to the supply chain system of cold chain logistics, and use laminating technology to paste the top paper and barrier layer on the upper and lower sides of the EPS board core to produce a thermal insulation KT board. However, the existing KT board production system cannot be directly applied to the production of thermal insulation KT board, and its laminating effect is poor and the bonding strength is not high.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a production system for cold chain insulation boards, aiming to improve the bonding effect between the surface paper and the board core and reduce the gap in the adhesive layer.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A production system for cold chain insulation boards comprises a feeding mechanism, a heat pasting device, a gluing mechanism, a face paper gluing mechanism, a trimming mechanism, a cutting device, a stacking table and a control device which are arranged in sequence in a front-to-back manner. The feeding mechanism is used for unwinding a layer of EPS board core to the heat pasting device, the heat pasting device is used for hot pressing a layer of aluminum foil on the lower surface of the board core, the gluing mechanism is used for uniformly coating glue on the upper surface of the board core, the face paper gluing mechanism is used for pressing a layer of kraft paper on the upper surface of the board core, the trimming mechanism is used for trimming the insulation KT board at a fixed width, the cutting device is used for cutting the insulation KT board at a fixed length, and the stacking table is used for stacking the insulation KT board cut at a fixed length; the heat pasting device and the cutting device are both electrically connected to the control device, and their operations are controlled by the control device.

[0008] The feeding mechanism comprises a base, a material receiving frame arranged on the base, a reel for unwinding the EPS board core, a mounting frame arranged in front of the material receiving frame, and a warning light and a distance sensor arranged on the mounting frame; the reel is rotatably arranged on the material receiving frame.

[0009] The thermal laminating device includes a first frame, a first unwinding mechanism arranged at the lower front side of the first frame, a plurality of hot pressing roller assemblies arranged at the rear of the first frame, a plurality of first flattening roller assemblies arranged behind the hot pressing roller assemblies, an oil temperature controller, and a first driving motor; the first unwinding mechanism is used to unwind a layer of aluminum foil, and the side of the aluminum foil facing the EPS board core is coated with hot melt adhesive.

[0010] The gluing mechanism includes two parallel side plates, a gluing roller group arranged between the two side plates and a guide roller group located below the gluing roller group, as well as a first drive device and a second drive device with two divisions for driving the gluing roller group and the guide roller group. The gluing roller group includes a feeding roller and a gluing roller arranged front and back, and a glue storage space for storing glue is formed between the feeding roller and the gluing roller. A glue leveling roller rotatably connected to the two side plates is arranged on the rear side of the gluing roller. The glue leveling roller is driven by a third drive device and has the same direction of rotation as the feeding roller.

[0011] The face paper gluing mechanism comprises a second frame, a second unwinding mechanism arranged on the upper front side of the second frame, a plurality of second flattening roller assemblies arranged at the rear of the second frame, and a second driving motor; the second unwinding mechanism is used for unwinding a layer of kraft paper.

[0012] The trimming mechanism comprises an adjusting rod arranged above the thermal insulation KT board and extending along the width direction of the thermal insulation KT board, and two cutting knives slidably sleeved on the adjusting rod; the cutting knives are locked on the adjusting rod by a locking screw.

[0013] The cutting device includes a base frame, a slide slidably arranged on the top of the base frame, a support plate, a cutter, a cutter driving mechanism and a pressing plate mechanism arranged in the slide, and a slide driving mechanism for driving the slide to reciprocate in the transmission direction of the insulation KT board; the support plate is used to support the insulation KT board to be cut, the cutter is used to cut the insulation KT board, the cutter driving mechanism is used to drive the cutter to reciprocate along the width direction of the insulation KT board, and the pressing plate mechanism is used to press the insulation KT board against the support plate when cutting the insulation KT board.

[0014] Beneficial effects:

[0015] The present invention provides a production system for cold chain insulation boards. When working, one side of the EPS board core is hot-pressed with a layer of aluminum foil in a heat-pasting device, and the other side of the EPS board core is pressed with a layer of kraft paper through a gluing mechanism and a face paper gluing mechanism. Finally, after fixed-width trimming and fixed-length cutting, a thermal insulation KT board is obtained. Since the thickness of the kraft paper and the aluminum foil layer are not uniform, the kraft paper layer and the aluminum foil layer are pressed separately to avoid the laminating effect of the corresponding fabrics being affected by insufficient force on one side of the EPS board core or excessive force on one side. In addition, according to the material properties of the kraft paper layer and the aluminum foil layer, a hot melt adhesive pressing or glue laminating process is selected to make the kraft paper layer and the aluminum foil layer more firmly adhered to the EPS board core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a production system for cold chain insulation boards provided by the present invention.

[0017] Figure 2 This is a front view of the feeding mechanism in the cold chain insulation board provided by the present invention.

[0018] Figure 3 A front view of the heat-sticking device in the cold chain insulation board provided by the present invention.

[0019] Figure 4 A schematic structural diagram of a hot pressing roller assembly in the cold chain insulation board provided by the present invention.

[0020] Figure 5 A three-dimensional diagram of the gluing mechanism in the cold chain insulation board provided by the present invention.

[0021] Figure 6 A front view of the surface paper gluing mechanism in the cold chain insulation board provided by the present invention.

[0022] Figure 7 A three-dimensional diagram of the trimming mechanism in the cold chain insulation board provided by the present invention.

[0023] Figure 8 A three-dimensional diagram of a cutting device in the cold chain insulation board provided by the present invention. DETAILED DESCRIPTION

[0024] The present invention provides a production system for cold chain insulation boards. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] In this article, the rear refers to the direction of movement along the insulation KT board, that is, Figure 1 The direction of the arrow in the middle is opposite to that of the front and back. Figure 1 The dotted line portion in the figure cannot be directly observed from the outside.

[0026] See also Figure 1-Figure 8 The present invention provides a production system of cold chain insulation board, including a feeding mechanism A, a hot pasting device B, a gluing mechanism C, a face paper gluing mechanism D, a trimming mechanism, a cutting device, a stacking table and a control device (not shown in the figure) arranged in sequence, the feeding mechanism is used to unwind a layer of EPS board core to the hot pasting device, the hot pasting device B is used to hot press a layer of aluminum foil on the lower surface of the board core, the gluing mechanism C is used to evenly apply glue to the upper surface of the board core, the face paper gluing mechanism D is used to press a layer of kraft paper on the upper surface of the board core, the trimming mechanism is used to trim the KT board with a fixed width, the cutting device is used to cut the KT board to a fixed length, and the stacking table is used to stack the KT board cut to a fixed length; the hot pasting device B and the cutting device are both electrically connected to the control device, and the control device controls their operation. The control device includes a PLC controller and related control circuits.

[0027] During operation, the feeding mechanism unwinds a layer of EPS board core, which is made of PS particles after heating and foaming to form EPS sheets (expandable polystyrene sheets, thickness of 1.5mm-3.5mm), and then undergoes secondary foaming to form a board core. One side of the EPS board core is hot-pressed with a layer of aluminum foil in a hot-sticking device, and the other side of the EPS board core is pressed with a layer of kraft paper by a gluing mechanism and a face paper gluing mechanism. Finally, after fixed-width trimming and fixed-length cutting, the thermal insulation KT board is obtained. It can be seen that the thermal insulation KT board consists of a kraft paper layer, an EPS board core, and an aluminum foil layer. Since the thickness of the kraft paper and aluminum foil layers is not equal, the kraft paper layer and the aluminum foil layer are pressed separately to avoid the laminating effect of the corresponding fabrics due to insufficient force on one side of the EPS board core or excessive force on one side. In addition, according to the material properties of the kraft paper layer and the aluminum foil layer, hot melt laminating or glue laminating process is selected to make the kraft paper layer and the aluminum foil layer more firmly adhered to the EPS board core. The aluminum foil layer can further play the role of waterproof, moisture-proof, steam-proof and odor-proof on the basis of the EPS board core; the kraft paper layer is used as the outer packaging layer, and its surface is convenient for printing logos and patterns. The material itself has high tear strength and rupture strength, is flexible and strong, and improves the service life of the thermal insulation KT board.

[0028] For details, please refer to Figure 2 The feeding mechanism A includes a base A1, a material receiving frame A2 arranged on the base, a reel A3 for unwinding the EPS board core, a mounting frame arranged in front of the material receiving frame, and a warning A4 and a distance sensor A5 arranged on the mounting frame; the distance sensor and the buzzer are electrically connected to the control device, and the reel is rotatably arranged on the material receiving frame. The distance sensor can measure the distance between the EPS board core roll and the distance sensor in real time, thereby indirectly measuring the thickness of the EPS board core roll. When the thickness is less than the preset value, it means that the EPS board core roll is about to run out and needs to be replaced. At this time, the warning light reminds the staff to place a new EPS board core roll.

[0029] For details, please refer to Figure 3 The thermal bonding device B comprises a first frame B1, a first unwinding mechanism B2 arranged at the lower front side of the first frame, a plurality of hot pressing roller assemblies B3 arranged at the rear of the first frame, a plurality of first flattening roller assemblies B4 arranged behind the hot pressing roller assemblies, an oil temperature controller B5, and a first driving motor B6; the first unwinding mechanism B2 is used to unwind a layer of aluminum foil, the side of the aluminum foil facing the EPS board core is coated with hot melt adhesive. It should be noted that the hot melt adhesive on the aluminum foil has been coated in advance.

[0030] During operation, the aluminum foil coated with hot melt adhesive and the EPS board core are input into the hot pressing roller assembly B3 for heating and pressurization. After the hot melt adhesive is melted by heat, the aluminum foil and the board core are bonded under pressure, and then the aluminum foil is flattened in the flattening roller assembly B4. Due to the hot melt adhesive bonding method, the glue coating step is saved, the bonding effect of the aluminum foil and the board core is good, and the gap between the aluminum foil and the board core is reduced.

[0031] Among them, see Figure 4 Each hot pressing roller assembly B3 includes an upper hot pressing roller B31 and a lower hot pressing roller B32, and the oil temperature machine is used to provide hot oil to the upper hot pressing roller and the lower hot pressing roller; each first flattening roller assembly B4 includes an upper pressing roller B41 and a lower pressing roller B42, and the first driving motor B6 drives all the upper hot pressing rollers B31, the lower hot pressing rollers B32, the upper pressing rollers B41 and the lower pressing rollers to rotate B42. The oil temperature machine B5 and the first driving motor B6 are electrically connected to the control device.

[0032] In this embodiment, both ends of the upper hot pressing roller and the upper pressing roller are rotatably sleeved with sliders B7, each slider is slidably arranged in a gantry B8, and the upper end of the slider is connected to the top of the gantry through an adjusting screw, and a hand wheel B9 is arranged on the top of the adjusting screw ( Figure 4 Only the connection structure of the upper hot pressing roller is drawn). By turning the hand wheel, the gap between the upper hot pressing roller and the lower hot pressing roller, and the gap between the upper pressing roller and the lower pressing roller can be adjusted to meet the production needs of board cores of different thicknesses and improve applicability.

[0033] Furthermore, the ends of the upper hot pressing roller and the lower hot pressing roller are connected to the oil pipe B11 (the oil pipe is the hot oil input and output pipeline of the oil temperature machine) through a rotary joint B10, ensuring that the hot oil can flow in and out of the upper hot pressing roller and the lower hot pressing roller smoothly without hindering their normal rotation.

[0034] For details, please refer to Figure 1 and Figure 5 The gluing mechanism C includes two parallel side plates C1, a gluing roller group C2 arranged between the two side plates and a guide roller group C3 located below the gluing roller group, as well as a first driving device and a second driving device for driving the gluing roller group and the guide roller group. The gluing roller group includes a feeding roller and a gluing roller arranged front and back. A glue storage space for storing glue is formed between the feeding roller and the gluing roller. A glue leveling roller C4 rotatably connected to the two side plates is arranged on the rear side of the gluing roller. The glue leveling roller is driven by a third driving device and has the same direction of rotation as the feeding roller.

[0035] The guide roller group C3 includes three guide rollers respectively located below the feeding pressure roller, the glue coating roller, and the glue leveling roller. Two adjacent guide rollers are connected by a gear group. The first drive device, the second drive device, and the third drive device all include motors and reducers that are connected to each other. The reducers in the first drive device, the second drive device, and the third drive device are connected to the end shafts of the feeding pressure roller, the guide roller, and the glue leveling roller.

[0036] For further information, see Figure 6 The face paper gluing mechanism D comprises a second frame D1, a second unwinding mechanism D2 arranged at the upper front side of the second frame, a plurality of second flattening roller assemblies D3 arranged at the rear of the second frame, and a second driving motor D4 for driving the second flattening roller assemblies to move; the second unwinding mechanism D2 is used to unwind a layer of kraft paper. The first flattening roller assembly B4 and the second flattening roller assembly D3 have the same structure.

[0037] When working, glue is put into the glue storage space, and the EPS board core with aluminum foil passes between the glue roller group C2 and the guide roller group C3. The glue roller combination applies glue to the EPS board core, and then the EPS board core passes between the glue leveling roller C4 and the guide roller group C3. The glue leveling roller levels the glue on the EPS board core to further ensure the uniform thickness of the glue. Finally, the kraft paper coated with glue and the EPS board core are input into the second flattening roller combination for pressure. Under the action of pressure, the kraft paper and the board core are bonded to obtain the thermal insulation KT board. Since the bonding layer between the kraft paper and the board core is glue, the gluing effect is good and it is not easy to separate.

[0038] Furthermore, a first tensioning roller group B11 is provided at the rear side of the first unwinding mechanism, and a second tensioning roller group D5 is provided at the rear side of the second unwinding mechanism. The first tensioning roller group and the second tensioning roller group are respectively used to tension the corresponding face paper. Through the tensioning action of the first tensioning roller group and the second tensioning roller group, the two layers of paper can be tightened, so that the face paper is flatly attached to the board core, and the flatness of the KT board surface is improved.

[0039] For details, please refer to Figure 7 The trimming mechanism includes an adjustment rod E1 arranged above the insulation KT board and extending along the width direction of the insulation KT board, and two cutters E2 slidably sleeved on the adjustment rod; the cutters are locked on the adjustment rod by a locking screw, and the adjustment rod is fixed between the upper ends of two mounting columns E4. When the KT board moves, the cutters will cut off the excess material on both sides of the insulation KT board to form a side board. By adjusting the distance between the two cutters, the insulation KT board can be cut to a fixed width.

[0040] See Figure 8 The cutting device includes a base frame F1, a slide F2 slidably arranged on the top of the base frame, a support plate F3, a cutter F4, a cutter driving mechanism F5 and a pressing plate mechanism F6 arranged in the slide, and a slide driving mechanism F7 for driving the slide to reciprocate in the transmission direction of the insulation KT board; the support plate F3 is used to support the insulation KT board to be cut, the cutter F4 is used to cut the insulation KT board, the cutter driving mechanism F5 is used to drive the cutter to reciprocate along the width direction of the insulation KT board, and the pressing plate mechanism is used to press the insulation KT board against the support plate when cutting the insulation KT board.

[0041] Before cutting, the insulation KT board to be cut moves on the pallet. When cutting is required, the carriage driving mechanism F7 drives the carriage and the insulation KT board to move in the same direction and at the same speed. At the same time, the pressing plate mechanism F6 operates to press the insulation KT board against the pallet. Then the cutter driving mechanism drives the cutter to cut. Since the carriage and the insulation KT board move in the same direction and at the same speed during the cutting process and the insulation KT board is pressed, there will be no relative movement between the KT board and the carriage. The movement of the cutter relative to the KT board is a linear movement along the width direction, and the cut is neat. It can be seen that the insulation KT board cutting device can neatly cut the moving insulation KT board.

[0042] Specifically, the pressing plate mechanism F6 includes a pressing plate F6.1 arranged above the supporting plate, and two first cylinders F6.2 symmetrically arranged at both ends of the pressing plate; the first cylinder is arranged downward, and its upper end is fixed on the top of the slide, and the lower end of its piston rod is connected to the pressing plate. When cutting, the piston rods of the two first cylinders extend downward synchronously, so that the pressing plate presses the thermal insulation KT board, and the two first cylinders are reset after cutting. The solenoid valves at the inlet and outlet ends of the first cylinders are electrically connected to the control device.

[0043] Furthermore, the cutter drive mechanism F5 includes a guide rod F5.1 extending along the width direction of the thermal insulation KT board, a chain F5.2, and a motor F5.3 for driving the chain to move; the cutter is slidably sleeved on the guide rod and fixedly connected to the chain. The motor is electrically connected to the control device. When cutting, the motor rotates to move the chain along the width direction of the thermal insulation KT board, thereby driving the cutter to move in this direction to cut the thermal insulation KT board.

[0044] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A production system for cold chain insulation boards, characterized in that: The utility model comprises a feeding mechanism, a heat laminating device, a gluing mechanism, a face paper gluing mechanism, a trimming mechanism, a cutting device, a stacking table and a control device which are arranged in sequence in the front and the back. The feeding mechanism is used for unwinding a layer of EPS board core to the heat laminating device. The heat laminating device is used for hot pressing a layer of aluminum foil on the lower surface of the board core. The gluing mechanism is used for uniformly coating glue on the upper surface of the board core. The face paper gluing mechanism is used for pressing a layer of kraft paper on the upper surface of the board core. The trimming mechanism is used for trimming the insulation KT board to a fixed width. The cutting device is used for cutting the insulation KT board to a fixed length. The stacking table is used for stacking the insulation KT board cut to a fixed length. The heat laminating device and the cutting device are both electrically connected to the control device, and their operation is controlled by the control device. The gluing mechanism comprises two parallel side plates, a gluing roller group arranged between the two side plates and a guide roller group located below the gluing roller group, and a first driving device and a second driving device which are two parts for driving the gluing roller group and the guide roller group. The gluing roller group includes a feeding roller and a gluing roller arranged at the front and the back, and a glue storage space for storing glue is formed between the feeding roller and the gluing roller, and a glue leveling roller rotatably connected to the two side plates is arranged at the rear side of the gluing roller, and the glue leveling roller is driven by a third driving device and has the same direction as the feeding roller; the face paper gluing mechanism includes a second frame, a second unwinding mechanism arranged at the upper front side of the second frame, a plurality of second flattening roller assemblies arranged at the rear of the second frame, and a second driving motor; the second unwinding mechanism is used to unwind a layer of kraft paper; the hot pasting device includes a first frame, a first unwinding mechanism arranged at the lower front side of the first frame, a plurality of hot pressing roller assemblies arranged at the rear of the first frame, a plurality of first flattening roller assemblies arranged behind the hot pressing roller assembly, an oil temperature machine, and a first driving motor; the first unwinding mechanism is used to unwind a layer of aluminum foil, and the side of the aluminum foil facing the EPS board core is coated with hot melt adhesive.

2. The production system of cold chain insulation board according to claim 1, characterized in that: The feeding mechanism comprises a base, a material receiving frame arranged on the base, a reel for unwinding the EPS board core, a mounting frame arranged in front of the material receiving frame, and a warning light and a distance sensor arranged on the mounting frame; the reel is rotatably arranged on the material receiving frame.

3. The production system of cold chain insulation board according to claim 1, characterized in that: The trimming mechanism comprises an adjusting rod arranged above the thermal insulation KT board and extending along the width direction of the thermal insulation KT board, and two cutting knives slidably sleeved on the adjusting rod; the cutting knives are locked on the adjusting rod by a locking screw.

4. The production system of cold chain insulation board according to claim 1, characterized in that The cutting device includes a base frame, a slide slidably arranged on the top of the base frame, a support plate, a cutter, a cutter driving mechanism and a pressing plate mechanism arranged in the slide, and a slide driving mechanism for driving the slide to reciprocate in the transmission direction of the insulation KT board; the support plate is used to support the insulation KT board to be cut, the cutter is used to cut the insulation KT board, the cutter driving mechanism is used to drive the cutter to reciprocate along the width direction of the insulation KT board, and the pressing plate mechanism is used to press the insulation KT board against the support plate when cutting the insulation KT board.

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