Laminating machine capable of recycling waste heat

Abstract

In order to overcome the defect that in the prior art, waste heat generated in the operation process of a laminating machine cannot be fully utilized, the utility model provides a waste heat recycling laminating machine which comprises a laminating main machine, a feeding table and a discharging table, the laminating main machine comprises a heating plate, an upper box, a transmission mechanism and an uncovering mechanism, the upper box is located above the heating plate, and the feeding table is located above the upper box. The upper box and the heating plate form a laminating cavity after being closed under the action of the uncovering mechanism, the transmission mechanism is used for receiving a laminating assembly conveyed by the feeding table, conveying the received laminating assembly to a preset position of the heating plate and conveying the laminated laminating assembly to the discharging table, the feeding table is located on the front side of the laminating main machine, and the discharging table is located on the rear side of the laminating main machine. Comprising a feeding table frame body and a feeding conveying device, the laminating machine adopting the structure can fully collect waste heat generated in the production process, improves the utilization rate of energy, achieves the purposes of saving energy and reducing consumption, and is more obvious in energy-saving effect especially when the waste heat of a main machine and a discharging table is collected at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of laminators, and particularly relates to a laminator capable of recycling waste heat. Background Art

[0002] During the operation of a solar cell module laminator, such as during the lamination and curing process, a large amount of heat is consumed, and at the same time, a large amount of heat is discharged, generating a large amount of waste heat. In the prior art, the above waste heat is dissipated in the workshop as waste heat. Firstly, it increases the temperature in the workshop, and in summer when it is hot, the workshop feels very uncomfortable. Secondly, when laminating stacked components, sufficient heat needs to be supplied to quickly reach the set temperature, consuming a large amount of energy. Currently, in the increasingly competitive industry, energy conservation and consumption reduction have become technical problems that each production provider urgently needs to solve. Therefore, our company has developed a laminator with waste heat recycling to save energy and reduce consumption. Content of the Utility Model

[0003] The purpose of the utility model is to provide a laminator with waste heat recycling in view of the deficiency of the prior art in which the waste heat generated during the operation of the laminator cannot be fully utilized.

[0004] The technical solution for the utility model to solve the technical problem is as follows:

[0005] A waste heat recycling laminator, comprising a laminating main machine, a feeding table, and a discharging table. The laminating main machine includes a heating plate, an upper box, a transmission mechanism, and an opening / closing mechanism. The upper box is located above the heating plate. Under the action of the opening / closing mechanism, the upper box and the heating plate form a laminating cavity after closing. The transmission mechanism is used to receive the laminated assembly conveyed by the feeding table and transfer the received laminated assembly to a predetermined position on the heating plate, and transfer the laminated assembly after lamination to the discharging table. The feeding table is located in front of the laminating main machine and includes a feeding table frame body and a feeding conveying device. The conveying component of the feeding conveying device is supported and fixed by the feeding table frame body. The laminated assembly is conveyed by the feeding conveying device onto the conveying component of the transmission mechanism of the laminating main machine. The discharging table is located behind the laminating main machine and includes a discharging conveying device and a discharging table frame body. The conveying component of the discharging conveying device is fixedly supported by the discharging table frame body. The discharging conveying component receives the laminated assembly after lamination conveyed by the transmission mechanism. It further includes a heat recycling mechanism. The heat recycling mechanism includes a heat collection device, a heat exchange device, and a heat transfer mechanism. The heat exchange device is a gas-liquid heat exchanger. The heat transfer mechanism includes a circulation pump, a circulation pump control device, and a preheating table. The preheating table is located above or below the feeding conveying component. A medium channel is provided in the preheating table. The liquid inlet end of the preheating table is hermetically connected to the heat outlet end of the heat exchange device through an external heat transfer pipeline, and its liquid outlet end is hermetically connected to the cold inlet end of the heat exchange device through an external heat transfer pipeline. The heat collection device includes a discharging table heat collection device and / or a main machine heat collection device, and a heat collection control device. The discharging table heat collection device includes a discharging table heat collection cover, a discharging table exhaust fan, and a discharging table temperature detection device. The discharging table heat collection cover is arranged above the discharging table and has a distance from the upper surface of the laminated assembly conveyed on the discharging table. The air outlet of the discharging table heat collection cover is hermetically connected to the air inlet of the discharging table exhaust fan through an air duct. The air outlet of the discharging table exhaust fan is hermetically connected to the heat inlet end of the heat exchange device through an air duct. The discharging table exhaust fan is electrically connected to the output end of the heat collection control device. The discharging table temperature detection device is electrically connected to the input end of the heat collection control device by an electrical signal. The detection end of the discharging table temperature detection device is located between the discharging table heat collection cover and the discharging table. When the discharging table temperature detection device detects that the temperature in the discharging table heat collection cover reaches the set temperature, the heat collection control device controls the discharging table fan to start;The host heat collection device includes a host exhaust fan, a host heat collection cover, and a host temperature detection device. The host heat collection cover is installed outside the upper box. When the upper box is in the open state, the bottom of the host heat collection cover is higher than or at the same level as the bottom of the upper box. The air inlet of the host exhaust fan is sealed and connected to the air outlet of the host heat collection cover through an air duct, and the air outlet is sealed and connected to the hot inlet end of the heat exchange device. The host temperature detection device is electrically connected to the input end of the heat collection control device, and the host exhaust fan is electrically connected to the output end of the heat collection control device. The detection end of the host temperature detection device is arranged below the host heat collection cover. When the host temperature detection device detects that the temperature below the host heat collection cover reaches the set temperature, the heat collection control device controls the host fan to start;

[0006] The heat collection control device described above is a PLC;

[0007] The host temperature detection device is arranged on the housing of the host heat collection cover, and its detection end is located between the host heat collection cover and the upper box;

[0008] The conveying component of the discharging table is a roller shaft, and an axial flow fan is arranged below it. The air outlet of the axial flow fan faces the side of the conveying component of the discharging table;

[0009] A host air duct valve switch is arranged on the host air duct between the host exhaust fan and the heat exchange device;

[0010] A discharging table air duct valve switch is arranged on the discharging table air duct between the discharging table exhaust fan and the heat exchange device;

[0011] The liquid inlet end of the preheating table is located at the discharging end of the discharging table, and the liquid outlet end is located at the feeding end of the discharging table;

[0012] It further includes a preheating table temperature detection device. The preheating table temperature detection device is arranged at the liquid inlet end of the preheating table, and its detection end is fixedly arranged on the preheating table;

[0013] It includes multiple preheating table temperature detection devices. The multiple preheating table temperature detection devices are arranged along the feeding end and the discharging end of the feeding table. Each preheating table temperature detection device is electrically connected to the input end of the circulation pump control device;

[0014] The cold outlet end of the air heat exchanger is connected to the air inlet of the heat exchange fan through an air duct. The air outlet of the heat exchange fan is provided with an exhaust air duct, and an exhaust air filter is arranged on the exhaust air duct. The cooled gas is discharged into the air after being filtered.

[0015] The advantages and beneficial effects of the present utility model are:

[0016] For the laminator adopting the structure of the present utility model, since heat collection covers are provided above the discharging table and / or the main machine, and the collection covers are connected with exhaust fans, the hot air collected from the discharging table and / or the main machine is sent into the gas-liquid heat exchanger through the exhaust fans, and the heat collected is transferred to the preheating workbench on the feeding table through the gas-liquid heat exchanger. It can fully collect the waste heat generated during the production process, improve the energy utilization rate, and achieve the purpose of energy conservation and consumption reduction. Especially when collecting the waste heat of both the main machine and the discharging table simultaneously, the energy-saving effect is more obvious. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the principle embodiment of the waste heat recycling laminator of the present utility model, which shows the heat circulation process.

[0018] Description of the Reference Numerals

[0019] 100 - Laminating main machine; 110 - Upper box; 111 - Bottom of the upper box; 120 - Heating plate; 130 - Lower box frame; 140 - High-temperature conveyor belt;

[0020] 200 - Feeding table; 210 - Feeding conveyor device; 211 - Feeding conveyor component; 220 - Feeding table frame;

[0021] 300 - Discharging table; 310 - Discharging conveyor device; 320 - Axial flow fan;

[0022] 400 - Heat exchange device; 410 - Hot inlet end; 420 - Cold outlet end; 430 - Cold inlet end; 440 - Hot outlet end; 450 - Heat exchange exhaust fan; 460 - Exhaust filter; 470 - Exhaust port;

[0023] 500 - Heat collection device; 510 - Main machine heat collection device; 511 - Main machine heat collection cover; 5111 - Bottom of the main machine heat collection cover body; 512 - Main machine exhaust fan; 513 - Main machine temperature detection device; 514 - Main machine air duct valve switch; 515 - Main machine heat collection cover air outlet; 520 - Discharging table heat collection device; 521 - Discharging table heat collection cover; 522 - Discharging table exhaust fan; 523 - Discharging table temperature detection device; 524 - Discharging table heat collection cover air outlet; 525 - Discharging air duct valve switch; 530 - Heat collection control device

[0024] 600 - Heat transfer mechanism; 610 - Preheating table; 620 - Circulation pump; 630 - Circulation pump control device; 640 - Preheating table temperature detection device; 650 - External heat transfer pipeline, 660 - Preheating table discharging end

[0025] 700 - Component. Detailed Description of the Preferred Embodiment

[0026] The present utility model will be further described in detail through specific embodiments below. The following embodiments are only descriptive and not restrictive, and the protection scope of the present utility model cannot be limited thereby. The description is based on the actual use position of the lamination component production line in practical applications.

[0027] The laminator of the technical solution of the present invention includes a lamination main machine for laminating and curing the lamination component, a main machine frame, a feeding table for conveying the lamination component to be laminated to the main machine, and a discharging table for discharging the laminated lamination component from the main machine. The lamination main machine includes a heating plate and an upper box. The heating plate is supported by the main machine frame, and the upper box is located above the heating plate. The upper box is controlled by an opening and closing mechanism to perform opening and closing lid movements. After closing the lid, it forms a sealed lamination cavity with the heating plate, and the sealing, heat preservation, and pressurization of the lamination component are realized in the sealed cavity. The lamination main machine also includes a transmission mechanism. The transmission component of the transmission mechanism carries and conveys the lamination component, and conveys the lamination component above the heating plate. The feeding table and the discharging table are located on the front and rear sides of the lamination main machine, and respectively include a feeding conveying device and a discharging conveying device. The feeding conveying device is arranged on the feeding frame body, and the discharging conveying device is arranged on the discharging frame body. The heights of the feeding conveying device and the discharging conveying device respectively match the height of the transmission component of the transmission mechanism. The feeding conveying device can convey the lamination component onto the transmission component of the transmission mechanism, and the discharging conveying device receives the lamination component conveyed out by the transmission component of the transmission mechanism. The above are all the structures of the existing laminator.

[0028] In the technical solution of the present invention, a heat recycling mechanism is added on the basis of the existing laminator structure. The heat recycling mechanism mainly includes a heat collection device, a heat exchange device, and a heat transfer mechanism. The heat collection device mainly collects the residual heat of the lamination component on the discharging table and the residual heat of the upper box of the main machine when the lid is opened. The heat exchange device mainly includes a gas-liquid heat exchanger, which converts the collected heat through the gas-liquid heat exchanger and then introduces it into the lower-level heat transfer component. The heat transfer component mainly transfers the heat input to the lamination component conveying platform of the feeding table through a heat conduction pipeline to realize the preheating process of the lamination component before entering the main machine chamber.

[0029] Specifically, the heat collection device includes a discharge table heat collection device 520, a mainframe heat collection device 510, and a heat collection control device 530. The discharge table heat collection device includes a discharge table heat collection hood 521, a discharge table exhaust fan 522, and a discharge table temperature detection device 523. The detection end of the discharge table temperature detection device is located below the discharge table heat collection hood and above the discharge table, preferably fixed on the discharge table heat collection hood, and is used to detect the temperature of the space above the discharge table. The discharge table heat collection hood is provided with a discharge table air outlet 524, which is connected to the discharge table exhaust fan through a discharge air duct 525. The discharge table exhaust fan is connected to the heat inlet end 410 of the heat exchange device through a discharge air duct. The mainframe heat collection device includes a mainframe heat collection hood 511, a mainframe exhaust fan 512, and a mainframe temperature detection device 513. The mainframe heat collection hood is located above the mainframe upper box 110 and has a certain distance from the mainframe upper box, enabling the heat dissipated from the mainframe to flow into the mainframe heat collection hood. The mainframe heat collection hood is provided with a mainframe heat collection hood air outlet 515, which is communicated with the mainframe exhaust fan through a mainframe air duct. The outlet of the mainframe exhaust fan is connected to the heat inlet end of the heat exchange device through a mainframe air duct. The mainframe temperature detection device is located below the mainframe heat collection hood, preferably set on the mainframe heat collection hood, and its detection end is located below the mainframe heat collection hood, which can accurately sense the temperature change after the heat is dissipated when the mainframe cover is opened, so that the temperature of the gas entering the heat exchange device is closer to its actual temperature. The heat collection control device usually adopts a PLC. Both the discharge table exhaust fan and the mainframe exhaust fan are electrically connected to the output end of the heat collection control device by electrical signals. Both the mainframe temperature detection device and the discharge table temperature detection device are electrically connected to the input end of the heat collection control device by electrical signals. A control module is set in the heat collection control device. When the temperature detected by the mainframe temperature detection device and / or the discharge table temperature detection device reaches the set value, the heat collection control device outputs a signal to control the mainframe exhaust fan and / or the discharge table exhaust fan to work and draw away the heat. Preferably, a mainframe air duct valve switch 514 is provided on the pipeline of the mainframe air duct between the mainframe exhaust fan and the heat inlet end of the heat exchange device to control the on-off of the mainframe air duct. When the mainframe exhaust fan is turned on, the mainframe air duct valve switch is opened to connect the passage between the heat inlet end of the heat exchange device and the mainframe heat collection hood air outlet. Preferably, a discharge table air duct valve switch is provided on the pipeline of the discharge table air duct between the discharge table exhaust fan and the heat inlet end of the heat exchange device. When the discharge table exhaust fan works, the discharge table air duct valve switch is opened.

[0030] Preferably, the heat exchange device adopts a gas-liquid heat exchanger. Preferably, its cold outlet end 420 is communicated with the air inlet of a heat exchange fan 450 through an air duct. The air outlet of the heat exchange fan is provided with an exhaust air duct, and an exhaust air filter 460 is provided on the exhaust air duct. The gas is filtered and then discharged into the air.

[0031] The discharge table temperature detection device and the mainframe temperature detection device respectively adopt temperature sensors. The heat collection control device preferably adopts a PLC.

[0032] The heat transfer component of the present utility model includes a lamination component preheating table 610 (hereinafter referred to as the preheating table for convenience of description), a circulation pump 620, a circulation pump control device 630, and a preheating table temperature detection device 640. The preheating table temperature detection device is electrically connected to the input end of the circulation pump control device, and the circulation pump is electrically connected to the output end of the circulation pump control device. The preheating workbench can be arranged on the feeding table frame 220, below the feeding conveyor component 211, or above the feeding table, above the feeding conveyor component. When the preheating table is located above the conveyor component, the lamination component conveyed by the feeding conveyor component is heated by thermal radiation. When the preheating table is located below the feeding conveyor component, it should be as close as possible to the feeding conveyor component, and preferably, the lamination component is heated by direct heating. Whether it is arranged above or below the feeding table, it is opposite to the position of the feeding conveyor component, preferably directly opposite, so that the lamination component can absorb heat more fully. The feeding conveyor device uses a high-temperature conveyor belt or rollers as the conveyor component. The preheating table temperature detection device is arranged on the preheating workbench, and its detection end is located inside the preheating workbench, used to detect the temperature of the preheating workbench. Preferably, preheating table temperature detection devices are arranged at both the feeding end and the discharging end of the preheating workbench. The liquid inlet end of the circulation pump is connected to the heat outlet end of the heat exchange device through an external heat transfer pipeline 650, the liquid outlet end of the circulation pump is hermetically connected to the liquid inlet of the preheating table through an external heat transfer pipeline, and the liquid outlet of the preheating table is hermetically connected to the cold inlet end of the heat exchange device through an external heat transfer pipeline. Preferably, the liquid inlet of the preheating table is arranged at its discharging end, which is hereinafter referred to as the preheating table discharging end 660 for convenience of description. In this way, when the component enters the feeding table, it first receives heating at a lower temperature, and its heating temperature gradually increases, so that the component can be heated evenly. When the component reaches the discharging end of the feeding table, since the discharging end of the discharging table is the liquid inlet end of the preheating table, the temperature of the preheating table is the highest, and the temperature at which the component is heated is also the highest, enabling the component to reach the highest preheating temperature state before entering the main machine, which is conducive to the rational utilization of heat and reduces heat loss during the conveying process of the component. When the temperature detection device located at the discharging end of the feeding table detects that the temperature of the preheating table reaches the set highest temperature, the circulation pump control device controls the circulation pump to stop working to prevent the temperature from rising too high. The feeding table temperature detection device feeds back the detected temperature information to the circulation pump control device, and the circulation pump control device records this temperature information, and the situation of waste heat collection can be understood based on this information. Preferably, a switch valve is arranged on the external heat transfer pipeline between the circulation pump and the liquid inlet of the preheating table to control the on-off of the external heat transfer pipeline, and the valve body is opened when the pump works. Preferably, a temperature detection device is also arranged at the feeding end of the preheating table. When the average temperature detected by multiple temperature detection devices reaches the temperature set by the process, the circulation pump control device controls the circulation pump to stop rotating.When the temperature is lower than the process-set temperature, the circulating pump control device controls the circulating pump to start working. In this way, by ensuring that the overall temperature of the preheating table does not exceed the process-set temperature, it is ensured that the heating temperature of the component does not exceed the set process temperature, preventing the circulating pump from stopping working due to insufficient heat absorption during the transfer of the component.

[0033] Preferably, when the upper box and the lower box of the main machine are in the open state, the bottom 5111 of the heat collection cover body of the main machine is higher than the bottom 111 of the upper box and has a distance from the peripheral side of the upper box, providing space for air flow, making the hot air below the upper box more conducive to flowing towards the air outlet of the heat collection cover of the main machine, enabling the heat inside the main machine after opening the cover to flow from between the upper box and the inside of the peripheral side of the heat collection cover of the main machine towards the air outlet of the heat collection cover of the main machine, facilitating the collection of hot air. When the temperature detection device of the main machine detects that the temperature below the heat collection cover of the main machine is lower than the set value, the heat collection control device controls the main machine exhaust fan to stop rotating, and at the same time, the main machine valve switch is closed to prevent low-temperature gas from entering the heat exchange device. The discharge table heat collection cover completely covers the discharge table. When the component reaches the discharge table, the lower end surface of the peripheral side of the discharge table heat collection cover is higher than the upper surface of the component, without hindering the normal forward movement of the component. Most importantly, when the discharge table exhaust fan sucks away the hot gas, the relatively low-temperature gas around can enter below and above the discharge table, promoting air circulation above the discharge table and improving the heat dissipation efficiency of the component. When the temperature detection device of the discharge table detects that the temperature above the discharge table is lower than the set value, the heat collection control device controls the discharge table exhaust fan to stop working, and the discharge table valve switch is closed to prevent low-temperature gas from entering the heat exchange device. The discharge table generally adopts a roller drive device. Preferably, an axial flow fan is arranged below the discharge table, and multiple axial flow fans are evenly distributed below the discharge table. Arranging the axial flow fan can improve the heat dissipation efficiency of the component on the one hand. On the other hand, since the axial flow fan blows towards the component from below the discharge table, it can assist the hot air to flow towards the air collection port of the discharge table, increasing the air extraction effect of the discharge table exhaust fan, improving the heat dissipation effect of the component, and preventing empty extraction.

[0034] During the operation of the laminator, the waste heat emitted from the discharge table is collected by the heat collection cover of the discharge table. After the upper box of the main machine and the opening of the upper box cover, the heat dissipated from the upper box and inside the upper box is collected by the heat collection cover of the main machine. The collected heat enters the gas-liquid heat exchanger through the hot inlet end to heat the heat transfer medium in the heat exchange pipeline. The low-temperature gas cooled by the heat transfer medium flows out from the cold outlet end. Under the action of the circulation pump, the hot medium flowing out from the hot outlet end of the gas-liquid heat exchanger enters the liquid inlet of the preheating table and flows in the preheating table under the action of the circulation pump. After the hot medium absorbs heat, it flows out from the liquid outlet of the preheating table and enters the gas-liquid heat exchanger through the cold inlet end of the gas-liquid heat exchanger to continue absorbing heat and circulate. In the present invention, the gas-liquid heat exchanger uses liquid substances such as heat-conducting oil and water as the heat transfer medium. Before the collected heat enters, the heat exchange medium is input into the heat exchange pipeline through the cold inlet end, and the heat transfer medium in the preheating table is circulated by the circulation pump to form a closed circulation structure, and the structure of the entire heat transfer component is simple.

Claims

1. A waste heat recycling laminator, comprising a laminating main machine, a feeding table, and a discharging table. The laminating main machine includes a heating plate, an upper box, a transmission mechanism, and an opening / closing mechanism. The upper box is located above the heating plate. Under the action of the opening / closing mechanism, the upper box and the heating plate form a laminating cavity after being closed. The transmission mechanism is used to receive the laminated components conveyed by the feeding table and convey the received laminated components to a predetermined position on the heating plate, and convey the laminated components after lamination to the discharging table. The feeding table is located in front of the laminating main machine and includes a feeding table frame body and a feeding conveying device. The conveying component of the feeding conveying device is supported and fixed by the feeding table frame body. The laminated components are conveyed to the conveying component of the transmission mechanism of the laminating main machine by the feeding conveying device. The discharging table is located behind the laminating main machine and includes a discharging conveying device and a discharging table frame body. The conveying component of the discharging conveying device is fixedly supported by the discharging table frame body. The discharging conveying component receives the laminated components after lamination conveyed by the transmission mechanism. It is characterized in that: It further includes a heat recycling mechanism, and the heat recycling mechanism includes a heat collection device, a heat exchange device and a heat transfer mechanism. The heat exchange device is a gas-liquid heat exchanger. The heat transfer mechanism includes a circulation pump, a circulation pump control device and a preheating table. The preheating table is located above or below the feeding conveyor component. A medium channel is provided in the preheating table. The liquid inlet end of the preheating table is hermetically connected to the heat outlet end of the heat exchange device through an external heat transfer pipeline, and its liquid outlet end is hermetically connected to the cold inlet end of the heat exchange device through an external heat transfer pipeline. The heat collection device includes a discharge table heat collection device and / or a main machine heat collection device, and a heat collection control device. The discharge table heat collection device includes a discharge table heat collection cover, a discharge table exhaust fan and a discharge table temperature detection device. The discharge table heat collection cover is arranged above the discharge table and has a distance from the upper surface of the laminated assembly conveyed on the discharge table. The air outlet of the discharge table heat collection cover is hermetically connected to the air inlet of the discharge table exhaust fan through an air duct. The air outlet of the discharge table exhaust fan is hermetically connected to the heat inlet end of the heat exchange device through an air duct. The discharge table exhaust fan is electrically connected to the output end of the heat collection control device. The discharge table temperature detection device is electrically connected to the input end of the heat collection control device by an electrical signal. The detection end of the discharge table temperature detection device is located between the discharge table heat collection cover and the discharge table. When the discharge table temperature detection device detects that the temperature in the discharge table heat collection cover reaches the set temperature, the heat collection control device controls the discharge table fan to start. The main machine heat collection device includes a main machine exhaust fan, a main machine heat collection cover and a main machine temperature detection device. The main machine heat collection cover covers the outside of the upper box. When the upper box is in the open state, the bottom of the main machine heat collection cover is higher than or at the same level as the bottom of the upper box. The air inlet of the main machine exhaust fan is hermetically connected to the air outlet of the main machine heat collection cover through an air duct, and the air outlet is hermetically connected to the heat inlet end of the heat exchange device. The main machine temperature detection device is electrically connected to the input end of the heat collection control device by an electrical signal. The main machine exhaust fan is electrically connected to the output end of the heat collection control device by an electrical signal. The detection end of the main machine temperature detection device is arranged below the main machine heat collection cover. When the main machine temperature detection device detects that the temperature below the main machine heat collection cover reaches the set temperature, the heat collection control device controls the main machine fan to start.

2. The laminator for waste heat recycling according to claim 1, wherein The heat collection control device is a PLC.

3. The laminator for waste heat recycling according to claim 1, characterized in that: The main machine temperature detection device is arranged on the cover body of the main machine heat collection cover, and its detection end is located between the main machine heat collection cover and the upper box.

4. The laminator for waste heat recycling according to claim 1, characterized in that: The discharge table conveyor component is a roller shaft, and an axial flow fan is arranged below it, and the air outlet of the axial flow fan faces the side of the discharge table conveyor component.

5. The laminator for recycling waste heat according to claim 1, wherein: A main machine air duct valve switch is arranged on the main machine air duct between the main machine exhaust fan and the heat exchange device.

6. The laminator for waste heat recycling according to claim 1, characterized in that: A discharge table air duct valve switch is arranged on the discharge table air duct between the discharge table exhaust fan and the heat exchange device.

7. The laminator for waste heat recycling according to claim 1, wherein: The liquid inlet end of the preheating table is located at the discharge end of the discharge table, and the liquid outlet end is located at the feeding end of the discharge table.

8. The laminator for waste heat recycling according to claim 7, characterized in that: It further includes a preheating table temperature detection device. The preheating table temperature detection device is arranged at the liquid inlet end of the preheating table, and its detection end is fixedly arranged on the preheating table.

9. The laminator for waste heat recycling according to claim 8, characterized in that: It includes multiple preheating table temperature detection devices, which are arranged along the feeding end and the discharging end of the feeding table, and each preheating table temperature detection device is electrically connected to the input end of the circulation pump control device.

10. A waste heat recycling laminator according to claim 1, characterized in that: The cold outlet end of the air heat exchanger is communicated with the air inlet of the heat exchange fan through an air duct, an exhaust air duct is arranged at the air outlet of the heat exchange fan, an exhaust air filter is arranged on the exhaust air duct, and the cooled gas is discharged into the air after being filtered.

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