Gray board composite production line

Abstract

The invention discloses a grey board composite production line, relates to the technical field of grey board production, and solves the problems that in a pre-pressing procedure, glue liquid is easy to remain on the surface of a pre-pressed roller body, and the improvement of production efficiency is not facilitated. The grey board composite production line comprises a mounting plate; the mounting plate adopts a rectangular plate structure; a first sliding block of an I-shaped block structure is arranged in the rectangular sliding groove of the first installation base in a sliding mode. A group of first sliding rails are fixedly mounted on the front side between the two groups of first sliding blocks and the rear sides of the two groups of first mounting seats; the two sides of the interior of the first sliding rail are each provided with a set of second sliding blocks of a rectangular block structure in a sliding mode. A first sliding rod of a cylindrical structure is slidably arranged in each of the two circular through grooves of the four second sliding blocks, and the outer side of each first sliding rod is sleeved with a spring. Scraping grooves of rectangular groove structures are fixedly formed in one ends of the two first sliding rods; residual glue liquid on the surface of the roller body can be thoroughly scraped, and the glue liquid adhesion is prevented from affecting the body paper conveying and compounding quality.

Description

A grey board paper composite production line Technical Field

[0001] This invention belongs to the field of grey board paper production technology, and more specifically, relates to a grey board paper composite production line. Background Technology

[0002] Grey board paper is a commonly used packaging material, widely used in various packaging and printing fields. In its production process, the lamination process is the core link to improve the thickness, strength and flatness of grey board paper. It needs to go through a series of processes such as pre-pressing of the base paper, lamination and drying through a dedicated production line to ensure that the quality of the final product meets the requirements.

[0003] The current production of grey board paper still has the following shortcomings: In the pre-pressing process, glue residue is easily left on the surface of the roller after pre-pressing. The glue residue not only affects the smoothness of the paper feeding, but also leads to problems such as loose bonding and delamination in the subsequent lamination process, which seriously affects the product quality. At the same time, the residual glue residue cannot be recycled, resulting in resource waste, and manual cleaning is required, which increases the labor burden and cost and is not conducive to improving production efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a grey board paper composite production line to solve the problem mentioned in the background art where, during the pre-pressing process, adhesive residue easily remains on the surface of the roller after pre-pressing. This adhesive residue not only affects the smoothness of the base paper conveying but also leads to problems such as loose bonding and delamination in subsequent composite processes, seriously affecting product quality. Furthermore, the residual adhesive residue cannot be recycled, resulting in resource waste, and manual cleaning is required, increasing labor burden and costs, which is not conducive to improving production efficiency.

[0005] The purpose and effectiveness of this invention's grey board paper composite production line are achieved by the following specific technical means: A grey board paper composite production line includes: a mounting plate; the mounting plate adopts a rectangular plate structure; guide grooves are fixedly arranged on both sides of the top rear end of the mounting plate; a heat exchange chamber is fixedly arranged on one side of the top of the mounting plate; a set of first mounting seats with rectangular block structures are fixedly arranged on both sides of the top front end of the mounting plate, and a through rectangular sliding groove structure is opened in the middle of the first mounting seat; a cylindrical lower pre-pressure roller is rotatably arranged at the bottom between the two sets of first mounting seats; an I-shaped block structure is slidably arranged in the rectangular sliding groove of the first mounting seat. The first slider has a through-hole structure at the top of the two sets of first sliders on the left; a set of first slide rails is fixedly installed on the front side between the two sets of first sliders and the rear side of the two sets of first mounting seats; a set of rectangular block structure second sliders is slidably installed on both sides of the inner side of the first slide rail, and a through-hole structure is opened on one side of the second slider, and two sets of through-circular slot structures are opened on the front side of the second slider; a set of cylindrical structure first slide rods is slidably installed in the two sets of circular slots of the four sets of second sliders, and a spring is sleeved on the outside of the first slide rods; a scraper groove with a rectangular groove structure is fixedly installed at one end of the two sets of first slide rods.

[0006] Furthermore, an upper preload roller is rotatably arranged between the two sets of first sliders; a first screw is rotatably arranged on the inner side of the first mounting base on the left side, and the first screw is connected to the first slider through a threaded engagement; a first motor is fixedly arranged on the top of the first mounting base on the left side, and the first motor is drivenly connected to the first screw; a first bidirectional lead screw is rotatably arranged on the inner side of the first slide rail, and the first bidirectional lead screw is connected to the second slider through a threaded engagement; a second motor is fixedly arranged on one side of the first slide rail, and the second motor is drivenly connected to the first bidirectional lead screw.

[0007] Furthermore, a set of collection tanks is fixedly installed on both sides of the front end of the mounting plate, and the collection tanks are connected to the inner side of the scraper groove through a hose. The hose between the collection tank and the scraper groove is equipped with a one-way valve structure. A through circular groove structure is opened at the bottom of the collection tank. A cylindrical second slide rod is slidably installed in the circular groove at the bottom of the collection tank, and a spring is sleeved on the outer side of the second slide rod. A circular piston plate is fixedly installed at the top of the second slide rod, and the outer wall of the piston plate is in contact with the inner wall of the collection tank. A set of S-shaped block transmission rods is rotatably installed on both sides of the front end of the mounting plate, and the transmission rods are in contact with the bottom end of the second slide rod. A set of third motors is fixedly installed on both sides of the front end of the mounting plate, and the third motors are connected to the transmission rods. A recovery tank is fixedly installed at the bottom of the front end of the mounting plate, and the recovery tank is connected to the two sets of collection tanks through a pipe. A one-way valve structure is installed between the recovery tank and the collection tank.

[0008] Furthermore, the mounting plate has two second mounting seats fixedly arranged on the top center of each side, and each second mounting seat has a through rectangular groove structure in the middle; a lower composite roller is rotatably connected between the two sets of second mounting seats; a third slider with an I-shaped block structure is slidably arranged inside the rectangular groove of the second mounting seat, and a through screw hole structure is opened at the top of the third slider; an upper composite roller is rotatably connected between the two sets of third sliders; a fourth motor is fixedly installed on the top of each set of second mounting seats on the left; a second screw is rotatably arranged inside each set of second mounting seats on the left, and the second screw is connected to the third slider by a threaded engagement, and the second screw is driven by the fourth motor.

[0009] Furthermore, a set of rectangular groove-structured heating plates is slidably connected between the left and right sets of guide grooves. The bottom of each heating plate has a rectangular array of heat dissipation vents, and one side of the top of the heating plate has a through-hole screw. A heating wire structure is provided on the inner side of each heating plate. A second bidirectional lead screw is rotatably mounted on the inner side of each set of guide grooves on the right side, and the second bidirectional lead screw is connected to the heating plate via a threaded connection. A fifth motor is fixedly mounted on the top of each set of guide grooves on the right side, and the fifth motor is driven by the second bidirectional lead screw. A first blower is fixedly arranged on the top of the heating plate. A heating element is fixedly mounted on the inner end of the heating plate. The filter plate has a rectangular plate structure with through-holes arranged in a rectangular array. A set of second slide rails is fixedly installed on both sides of the filter plate. A first lead screw is rotatably installed on the inner side of the right set of second slide rails. A sixth motor is fixedly installed on one side of the right set of second slide rails and is connected to the first lead screw via a transmission connection. A rectangular connecting block is slidably installed between the two sets of second slide rails, and the connecting block is threadedly connected to the first lead screw. A brush structure is installed at the bottom of the connecting block. A vacuum cleaner is fixedly installed on one side of the connecting block. A preheating air outlet is fixedly connected to the front of each of the two frontmost heating plates.

[0010] Furthermore, the heat exchange chamber adopts a rectangular groove structure, and a filter screen is provided on one side of the heat exchange chamber opening; an S-shaped heat exchange tube is provided inside the heat exchange chamber; a second blower is fixedly provided on one side of the heat exchange chamber, and the second blower is connected to the preheating air outlet; S-shaped baffles are fixedly provided on both sides inside the heat exchange chamber; an air inlet is fixedly connected to the top of the heat exchange tube, and the air inlet is connected to the drying cylinder; and an air outlet is provided at the bottom of the heat exchange tube.

[0011] Compared with the prior art, the present invention has the following beneficial effects: Through the cooperation of the second motor, the first bidirectional lead screw, the second slider and the first slide rod, the position of the scraper groove can be flexibly adjusted. Combined with the elastic force provided by the spring on the outside of the first slide rod, it is ensured that the scraper groove is in close contact with the pre-pressing roller body, which can thoroughly scrape off the residual glue on the roller body surface and avoid glue adhesion affecting the paper conveying and lamination quality. The scraped glue is efficiently recycled and reused through the synergistic action of the collection tank, piston plate, transmission rod and recycling tank, which not only reduces glue waste, but also lowers production costs, avoids downtime for cleaning, and is conducive to improving production efficiency.

[0012] The heating wires inside the heating plate work in conjunction with the first blower to evenly blow heat onto the cardboard through the heat dissipation vents, achieving comprehensive and uniform drying of the cardboard and improving drying efficiency and shaping effect. At the same time, the filter plate can effectively filter impurities and prevent blockage of the heat dissipation vents. With the coordinated action of the sixth motor, the first lead screw, the connecting block and the vacuum cleaner, impurities on the surface of the filter plate can be automatically cleaned without frequent manual cleaning, reducing labor costs, ensuring a continuous and stable drying process and improving the surface quality of the dried cardboard.

[0013] By combining the heat exchange chamber, heat exchange tubes, baffles, and a second blower, the heat released by the exhaust steam from the drying cylinder can be effectively recovered. The exhaust steam enters the heat exchange tubes through the air inlet, and under the action of the baffles, the air comes into full contact with the heat exchange tubes, maximizing the absorption of the exhaust steam's heat. The hot air after heat exchange is preheated through the preheating air outlet to preheat the pre-pressed cardboard, which not only reduces the temperature difference between the cardboard and the drying process, preventing the cardboard from warping or deforming, but also reduces the heat consumption of the drying process, improves energy efficiency, and achieves energy-saving production. Attached Figure Description

[0014] Figure 1 is an overall axial view schematic diagram of the present invention.

[0015] Figure 2 is a schematic diagram of the overall top structure of the present invention.

[0016] Figure 3 is a schematic diagram of the connection relationship between the mounting plate and the first mounting base of the present invention.

[0017] Figure 4 is a schematic diagram of the connection between the collection tank and the transmission rod in cross-section of the present invention.

[0018] Figure 5 is a cross-sectional view of the heat exchange cavity structure of the present invention.

[0019] Figure 6 is a schematic diagram of the connection between the guide groove and the heating plate of the present invention.

[0020] Figure 7 is a schematic diagram of the connection between the filter plate and the second slide rail of the present invention.

[0021] Figure 8 is a schematic diagram of the connection relationship between the slide rail and the scraper groove of the present invention.

[0022] In the diagram, the correspondence between component names and attached drawing numbers is as follows: 1. Mounting plate; 101. First mounting base; 102. Lower preload roller; 103. First slider; 104. Upper preload roller; 105. First screw; 106. First motor; 107. First slide rail; 108. First bidirectional lead screw; 109. Second motor; 110. Second slider; 111. First slide rod; 112. Collection tank; 113. Second slide rod; 114. Piston plate; 115. Transmission rod; 116. Third motor; 117. Recovery tank; 118. Second mounting base; 119. Lower composite roller; 120. Third slider; 121. Upper composite roller; 122. Fourth motor; 123. Second screw; 124. Scraper groove; 2. Guide groove; 201. Heating plate; 202. Second bidirectional lead screw; 203. Fifth motor; 204. First blower; 205. Filter plate; 206. Second slide rail; 207. First lead screw; 208. Sixth motor; 209. Connecting block; 210. Vacuum cleaner; 211. Preheating air outlet; 3. Heat exchange chamber; 301. Heat exchange tube; 302. Second blower; 303. Baffle plate; 304. Air inlet; 305. Air outlet. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Example 1: As shown in Figures 1 to 8: This invention provides a grey board paper composite production line, including: a mounting plate 1; the mounting plate 1 adopts a rectangular plate structure, and the mounting plate 1 serves as the installation foundation for the entire production line; guide grooves 2 are fixedly arranged on both sides of the top rear end of the mounting plate 1; a heat exchange chamber 3 is fixedly arranged on one side of the top of the mounting plate 1, which is used to realize waste heat recovery and heat exchange, thereby improving energy utilization efficiency; a set of first mounting seats 101 with rectangular block structures are fixedly arranged on both sides of the top front end of the mounting plate 1, which serve as the mounting carrier for the pre-pressing roller group, and a through rectangular sliding groove structure is opened in the middle of the first mounting seat 101; a lower pre-pressing roller 102 with a cylindrical structure is rotatably arranged at the bottom between the two sets of first mounting seats 101, which can rotate around its own axis and is used to cooperate with the upper pre-pressing roller 104 to complete the pre-pressing treatment of the base paper; an I-shaped block structure is slidably arranged in the rectangular sliding groove of the first mounting seat 101. The first slider 103 of the structure has a through-hole structure on the top of the two sets of first sliders 103 on the left. A set of first slide rails 107 are fixedly installed on the front side between the two sets of first sliders 103 and the rear side of the two sets of first mounting seats 101. A set of rectangular block structure second sliders 110 are slidably arranged on both sides of the inner side of the first slide rails 107. A through-hole structure is opened on one side of the second slider 110. Two sets of through-hole circular slot structures are opened on the front side of the second slider 110. A set of cylindrical structure first slide rods 111 are slidably arranged in the two sets of circular slots of the four sets of second sliders 110. A spring is sleeved on the outside of the first slide rod 111. The spring is used to provide elastic force for the scraper groove 124 to ensure that the scraper groove 124 is tightly attached to the roller body. A rectangular groove structure scraper groove 124 is fixedly arranged at one end of the two sets of first slide rods 111. The scraper groove 124 is used to scrape off the residual glue on the surface of the roller body to avoid glue adhesion and affect production.

[0025] Among them, an upper pre-pressure roller 104 is rotatably arranged between the two sets of first sliders 103. The upper pre-pressure roller 104 can rotate around its own axis and cooperates with the lower pre-pressure roller 102 to pre-press the passing paper, squeezing out interlayer air and excess glue. A first screw 105 is rotatably arranged on the inner side of the left set of first mounting bases 101, and the first screw 105 is connected to the first slider 103 by a threaded engagement. When the first screw 105 rotates, it can drive the first slider 103 to move up and down along the rectangular slide groove of the first mounting base 101, thereby adjusting the distance between the upper pre-pressure roller 104 and the lower pre-pressure roller 102. A first motor 106 is fixedly installed at the top and is connected to a first screw 105. The first motor 106 provides power for the rotation of the first screw 105. A first bidirectional lead screw 108 is rotatably installed on the inner side of the first slide rail 107 and is connected to a second slider 110 by a threaded connection. When the first bidirectional lead screw 108 rotates, it can drive the second sliders 110 on both sides to move synchronously in opposite directions along the first slide rail 107, thereby adjusting the position of the scraper groove 124. A second motor 109 is fixedly installed on one side of the first slide rail 107 and is connected to the first bidirectional lead screw 108.

[0026] The mounting plate 1 has a set of collection tanks 112 fixedly installed on both sides of its front end. The collection tanks 112 collect the adhesive scraped by the scraper groove 124. The collection tanks 112 are connected to the inside of the scraper groove 124 via hoses, allowing the adhesive in the scraper groove 124 to flow into the collection tanks 112. A one-way valve is installed on the hose between the collection tanks 112 and the scraper groove 124 to prevent the adhesive in the collection tanks 112 from flowing back into the scraper groove 124. A through-hole circular groove is provided at the bottom of the collection tanks 112. A cylindrical second slide rod 113 is slidably installed in the circular groove at the bottom of the collection tanks 112, and a spring is sleeved on the outside of the second slide rod 113 to provide a restoring force for the piston plate 114. A circular piston plate 114 is fixedly installed at the top of the second slide rod 113, and the outer wall of the piston plate 114 is in contact with the inner wall of the collection tanks 112. The piston plate 114 can slide up and down along the inner wall of the collection tank 112 to squeeze the adhesive in the collection tank 112 and make it flow into the recycling tank 117. A set of S-shaped block structure transmission rods 115 are rotatably arranged on both sides of the front end of the mounting plate 1, and the transmission rods 115 are in contact with the bottom end of the second slide rod 113. When the transmission rods 115 rotate, they can push the second slide rod 113 to move up and down, thereby driving the piston plate 114 to move. A set of third motors 116 are fixedly arranged on both sides of the front end of the mounting plate 1, and the third motors 116 are connected to the transmission rods 115. A recycling tank 117 is fixedly arranged at the bottom of the front end of the mounting plate 1. The recycling tank 117 is used to collect the adhesive in the collection tank 112 and realize the reuse of the adhesive. The recycling tank 117 is connected to the two sets of collection tanks 112 through pipes, and a one-way valve structure is arranged between the recycling tank 117 and the collection tank 112.

[0027] The mounting plate 1 has two second mounting seats 118 fixedly arranged on both sides of its top center, and each second mounting seat 118 has a through rectangular groove structure in the middle. A lower composite roller 119 is rotatably connected between the two sets of second mounting seats 118. The lower composite roller 119 can rotate around its own axis to cooperate with the upper composite roller 121 to complete the composite processing of the base paper. A third slider 120 with an I-shaped block structure is slidably arranged inside the rectangular groove of the second mounting seat 118, and the top of the third slider 120 has a through screw hole structure. The two sets of third sliders 120 are rotatably connected. An upper composite roller 121 is installed; a fourth motor 122 is fixedly installed on the top of each group of second mounting seats 118 on the left; a second screw 123 is rotatably installed on the inner side of each group of second mounting seats 118 on the left, and the second screw 123 is connected to the third slider 120 by a threaded engagement. The second screw 123 is driven by the fourth motor 122. When the fourth motor 122 drives the second screw 123 to rotate, it can drive the third slider 120 to move up and down along the rectangular slide groove of the second mounting seat 118, thereby adjusting the distance between the upper composite roller 121 and the lower composite roller 119 to adapt to the composite requirements of different specifications of base paper.

[0028] In this system, a set of rectangular grooved heating plates 201 are slidably connected between the left and right sets of guide grooves 2. The heating plates 201 can slide up and down along the guide grooves 2 for drying the laminated cardboard. The bottom of the heating plates 201 has a rectangular array of heat dissipation vents, and one side of the top of the heating plates 201 has a through-hole screw hole. The inner side of the heating plates 201 is provided with a heating wire structure to generate heat and provide a heat source for drying. A set of second bidirectional screws 202 is rotatably installed on the inner side of each set of guide grooves 2 on the right side. The second bidirectional screws 202 are connected to the heating plates 201 by threaded engagement. When the bidirectional lead screw 202 rotates, it can drive the heating plates 201 on both sides to move synchronously in opposite directions along the guide groove 2, thereby adjusting the distance between the heating plates 201; a fifth motor 203 is fixedly installed at the top of each set of guide grooves 2 on the right side, and the fifth motor 203 is connected to the second bidirectional lead screw 202 for transmission; a first blower 204 is fixedly arranged on the top of the heating plate 201, and the first blower 204 is used to blow air into the heating plate 201, so that the heat inside the heating plate 201 can be blown to the cardboard through the heat dissipation vent with the air, thereby improving the drying efficiency; a rectangular plate filter plate 205 is fixedly installed on the inner end of the heating plate 201, and the filter plate 205... 05 is used to filter and block impurities between the raw paper and the heating plate 201, preventing impurities from entering and affecting the drying effect. The filter plate 205 has a through-hole structure in a rectangular array. A set of second slide rails 206 are fixedly installed on both sides of the filter plate 205. A first lead screw 207 is rotatably installed on the inner side of the second slide rail 206 on the right side. A sixth motor 208 is fixedly installed on one side of the second slide rail 206 on the right side, and the sixth motor 208 is connected to the first lead screw 207 for transmission. A rectangular block structure connecting block 209 is slidably installed between the two sets of second slide rails 206, and the connecting block 209 is threadedly engaged with the first lead screw 207. When the first lead screw 207 rotates, it can drive the connecting block 209 to move along the second slide rail 206. The bottom of the connecting block 209 is provided with a brush structure, which is used to clean impurities on the surface of the filter plate 205 to prevent the filter holes from clogging. A vacuum cleaner 210 is fixedly installed on one side of the connecting block 209. The vacuum cleaner 210 is used to suck away the impurities cleaned by the brush in time to avoid the accumulation of impurities affecting the filtration effect. A set of preheating air outlets 211 is fixedly connected to the front of the two sets of heating plates 201. The preheating air outlets 211 are used to blow preheated air to the pre-pressed cardboard to realize the preheating treatment of the cardboard and lay the foundation for subsequent drying.

[0029] The specific usage and function of this embodiment: In this invention, during operation, after the first motor 106 starts, it drives the first screw 105 to rotate, which in turn drives the upper pre-pressure roller 104, which is rotated and installed between the two sets of first sliders 103, to rise and fall synchronously. This achieves the adjustment of the distance between the upper pre-pressure roller 104 and the lower pre-pressure roller 102, adapting to the thickness requirements of different specifications of the base paper to be laminated. After the distance adjustment is completed, the base paper to be laminated is conveyed between the upper pre-pressure roller 104 and the lower pre-pressure roller 102. The two rollers rotate synchronously, forming a uniform compression on the base paper, fully squeezing out the air between the layers of the base paper, and at the same time squeezing the excess glue between the layers to the edge of the base paper. Meanwhile, the two sets of scraper grooves 12 are adjusted according to the position of the glue squeezed out of the base paper. At position 4, after starting the second motor 109, it drives the first bidirectional lead screw 108 to rotate, simultaneously driving the second sliders 110 on both sides to move in a synchronous reverse linear motion along the first slide rail 107. This adjusts the position of the scraper grooves 124 fixed at one end of the two sets of first slide rods 111, so that the scraper grooves 124 are respectively aligned with the roller surfaces of the upper pre-pressure roller 104 and the lower pre-pressure roller 102. The springs sleeved on the outside of the first slide rods 111 provide a continuous elastic force to the scraper grooves 124, ensuring that the scraper grooves 124 are in close contact with the roller surface without damaging the roller surface. During the rotation of the roller, the scraper grooves 124 completely scrape off the residual adhesive on the roller surface and collect it into their own grooves; simultaneously, the third motor 1 is started. 16. The transmission rod 115 is rotated, and through the contact between the transmission rod 115 and the second slide rod 113 during the rotation, the second slide rod 113 can be pushed up and down, causing the piston plate 114 to slide along the inner wall of the collection tank 112. During the movement of the piston plate 114, when it moves downward, it creates a negative pressure in the collection tank 112, causing the adhesive in the scraper groove 124 to flow into the collection tank 112 through the hose between the scraper groove 124 and the collection tank 112. The one-way valve structure on the hose can effectively prevent the adhesive in the collection tank 112 from flowing back into the scraper groove 124. When it moves upward, it squeezes the adhesive in the collection tank 112, causing the adhesive to pass between the collection tank 112 and the recovery tank 117. The adhesive flows into the recycling tank 117 through the pipeline, realizing the recycling and reuse of the adhesive and completing the entire adhesive cleaning and recycling process. After the raw paper is pre-pressed, it enters between the lower composite rollers 119 and the upper composite rollers 121. The fourth motor 122 is started, driving the second screw 123 to rotate inside the second mounting base 118, which in turn drives the upper composite rollers 121, which are installed between the left and right third sliders 120, to rise and fall synchronously. The distance between the upper composite rollers 121 and the lower composite rollers 119 is adjusted to match the thickness of the pre-pressed raw paper and ensure uniform pressing force. The pre-pressed raw paper is transported between the upper composite rollers 121 and the lower composite rollers 119 for high-strength pressing to form a preliminary composite paperboard.The cardboard enters between the heating plates 201. First, the fifth motor 203 is started, driving the second bidirectional lead screw 202 to rotate inside the guide groove 2. This causes the heating plates 201 on both sides to move synchronously in opposite directions along the guide groove 2. The distance between the two sets of heating plates 201 is adjusted to suit the thickness of the composite cardboard. The distance between the heating plates 201 and the cardboard is also adjusted. After the distance is adjusted, the heating wires inside the heating plates 201 are energized to generate heat. At the same time, the first blower 204 is started, blowing air into the heating plates 201. The air mixes thoroughly with the heat generated by the heating wires inside the heating plates 201, and then is evenly blown onto the surface of the composite cardboard through the rectangular array of heat dissipation vents at the bottom of the heating plates 201, achieving comprehensive and uniform drying of the cardboard. During this process, the filter plate 205 is used to filter and block paper scraps and impurities generated during the paper feeding process, preventing impurities from entering the heating plate 201 and clogging the heat dissipation vents or affecting the drying effect. To avoid impurities accumulating on the surface of the filter plate 205 and clogging the filter holes, the sixth motor 208 is started, driving the first lead screw 207 to rotate inside the second slide rail 206 on the right side. This, in turn, drives the connecting block 209 to move linearly along the second slide rail 206. The brush structure at the bottom of the connecting block 209 moves along with it, cleaning the impurities on the surface of the filter plate 205. At the same time, the vacuum cleaner 210 is started to promptly remove the impurities cleaned by the brush, preventing impurities from accumulating on the surface of the filter plate 205 or falling onto the cardboard, ensuring a stable drying process and ensuring the surface quality of the cardboard after drying.

[0030] Example 2: Based on Example 1, as shown in Figures 1 to 8: The heat exchange chamber 3 adopts a rectangular groove structure, and a filter screen is provided on one side of the opening of the heat exchange chamber 3. The filter screen is used to filter the air entering the heat exchange chamber 3 to prevent impurities from entering the heat exchange tube 301 and affecting the heat exchange effect. An S-shaped heat exchange tube 301 is provided inside the heat exchange chamber 3. A second blower 302 is fixedly installed on one side of the heat exchange chamber 3, and the second blower 302 is connected to the preheating air outlet 211. The second blower 302 is used to blow the hot air that has undergone heat exchange in the heat exchange chamber 3 to the preheating air outlet 211 to preheat the cardboard. The heat exchanger provides a heat source; S-shaped baffles 303 are fixedly installed on both sides of the heat exchange chamber 3. The baffles 303 are used to disrupt the airflow trajectory in the heat exchange chamber 3, increase the residence time of the air in the heat exchange chamber 3, and improve the heat exchange effect; an air inlet 304 is fixedly connected to the top of the heat exchange tube 301, and the air inlet 304 is connected to the drying cylinder. The exhaust steam generated by the drying cylinder can enter the heat exchange tube 301 through the air inlet 304 to release heat for heat exchange; an air outlet 305 is provided at the bottom of the heat exchange tube 301. The exhaust steam after heat exchange can be discharged from the heat exchange chamber 3 through the air outlet 305 to complete the waste heat recovery process.

[0031] The specific usage and function of this embodiment: The exhaust steam generated during the operation of the drying cylinder enters the interior of the heat exchange tube 301 through the air inlet 304 at the top of the heat exchange tube 301. The exhaust steam releases heat as it flows within the heat exchange tube 301, heating the air inside the heat exchange chamber 3. The second blower 302 is then activated to draw air into the heat exchange chamber 3. The air first passes through a filter screen on one side of the opening of the heat exchange chamber 3 to remove impurities and prevent them from entering the heat exchange tube 301 and affecting the heat exchange effect or clogging the pipes. The filtered air then enters the heat exchange chamber 3. Under the action of the S-shaped baffles 303 fixed on both sides of the heat exchange chamber 3, the residence time of the air in the heat exchange chamber 3 is extended, allowing the air to interact more effectively with the heat exchange tubes. The heat exchange tubes 301 fully contact and absorb the heat released by the exhaust steam within them to the maximum extent. The hot air after heat exchange is then transported through pipes to the preheating air outlets 211 in front of the two sets of heating plates 201 by the second blower 302. The air is then blown from the preheating air outlets 211 onto the pre-pressed cardboard to preheat it, reducing the temperature difference between the cardboard and the drying process. This prevents the cardboard from warping or deforming due to sudden heating, while also reducing heat consumption in the drying process and improving drying efficiency. The exhaust steam released from the heat exchange tubes 301 is discharged from the heat exchange chamber 3 through the air outlet 305 at the bottom of the heat exchange tubes 301, completing the entire waste heat recovery process and effectively improving energy utilization efficiency to achieve energy-saving production.

Claims

1. A grey board paper composite production line, characterized in that, include: Mounting plate (1); the mounting plate (1) adopts a rectangular plate structure; guide grooves (2) are fixedly arranged on both sides of the top rear end of the mounting plate (1); a heat exchange chamber (3) is fixedly arranged on one side of the top of the mounting plate (1); a set of first mounting seats (101) with rectangular block structure are fixedly arranged on both sides of the top front end of the mounting plate (1), and a through rectangular slide groove structure is opened in the middle of the first mounting seat (101); a cylindrical lower preload roller (102) is rotatably arranged at the bottom between the two sets of first mounting seats (101); a first slider (103) with I-shaped block structure is slidably arranged in the rectangular slide groove of the first mounting seat (101), and a through screw is opened at the top of the two sets of first sliders (103) on the left. Hole structure; a set of first slide rails (107) are fixedly installed on the front side between the two sets of first sliders (103) and the rear side of the two sets of first mounting seats (101); a set of second sliders (110) with rectangular block structure are slidably installed on both sides of the inner side of the first slide rail (107), and a through-hole structure is opened on one side of the second slider (110), and two sets of through-circular slot structures are opened on the front side of the second slider (110); a set of first slide rods (111) with cylindrical structure are slidably installed in the two sets of circular slots of the four sets of second sliders (110), and a spring is sleeved on the outer side of the first slide rod (111); a scraper groove (124) with rectangular groove structure is fixedly installed at one end of the two sets of first slide rods (111).

2. The grey board paper composite production line as described in claim 1, characterized in that: An upper preload roller (104) is rotatably arranged between the two sets of first sliders (103); a first screw (105) is rotatably arranged on the inner side of the first mounting base (101) on the left side, and the first screw (105) is connected to the first slider (103) by a threaded connection; a first motor (106) is fixedly arranged on the top of the first mounting base (101) on the left side, and the first motor (106) is connected to the first screw (105) in a transmission connection.

3. The grey board paper composite production line as described in claim 1, characterized in that: The first slide rail (107) is rotatably provided with a first bidirectional lead screw (108), and the first bidirectional lead screw (108) is connected to the second slider (110) by a threaded connection; a second motor (109) is fixedly provided on one side of the first slide rail (107), and the second motor (109) is connected to the first bidirectional lead screw (108) by a transmission connection.

4. The grey board paper composite production line as described in claim 1, characterized in that: A set of collection tanks (112) are fixedly installed on both sides of the front end of the mounting plate (1), and the collection tanks (112) are connected to the inner side of the scraper groove (124) through a hose. The hose between the collection tanks (112) and the scraper groove (124) is equipped with a one-way valve structure. A through circular groove structure is opened at the bottom of the collection tanks (112). A cylindrical second slide rod (113) is slidably installed in the circular groove at the bottom of the collection tanks (112), and a spring is sleeved on the outer side of the second slide rod (113). A piston plate (114) with a circular plate structure is fixedly installed at the top of the second slide rod (113), and the piston plate (114) is outer... The wall is attached to the inner wall of the collection tank (112); a set of S-shaped block structure transmission rods (115) are rotatably set on both sides of the front end of the mounting plate (1), and the transmission rods (115) are in contact with the bottom end of the second slide rod (113); a set of third motors (116) are fixedly set on both sides of the front end of the mounting plate (1), and the third motors (116) are connected to the transmission rods (115); a recycling tank (117) is fixedly set at the bottom of the front end of the mounting plate (1), and the recycling tank (117) is connected to the two sets of collection tanks (112) through pipes, and a one-way valve structure is set between the recycling tank (117) and the collection tank (112).

5. The grey board paper composite production line as described in claim 1, characterized in that: The mounting plate (1) has two second mounting seats (118) fixedly arranged on the top middle sides, and the second mounting seat (118) has a through rectangular groove structure in the middle; the two sets of second mounting seats (118) are rotatably connected to each other with a lower composite roller (119); the inner side of the rectangular groove of the second mounting seat (118) is slidably provided with a third slider (120) of I-shaped block structure, and the top of the third slider (120) has a through screw hole structure; the two sets of third sliders (120) are rotatably connected to each other with an upper composite roller (121); the top of each set of second mounting seats (118) on the left is fixedly provided with a fourth motor (122); the inner side of each set of second mounting seats (118) on the left is rotatably provided with a second screw (123), and the second screw (123) is connected to the third slider (120) by a threaded connection, and the second screw (123) is connected to the fourth motor (122) by a drive connection.

6. The grey board paper composite production line as described in claim 1, characterized in that: A set of rectangular groove structure heating plates (201) are slidably connected between the left and right sets of guide grooves (2), and the bottom of the heating plates (201) is provided with heat dissipation vents in a rectangular array. A through screw hole structure is provided on one side of the top of the heating plates (201), and a heating wire structure is provided on the inner side of the heating plates (201). A set of second bidirectional screws (202) is rotatably provided on the inner side of each set of guide grooves (2) on the right side, and the second bidirectional screws (202) are connected to the heating plates (201) by threaded engagement. A fifth motor (203) is fixedly provided on the top of each set of guide grooves (2) on the right side, and the fifth motor (203) is connected to the second bidirectional screws (202) in a transmission connection. A first blower (204) is fixedly arranged on the top of the heating plates (201).

7. The grey board paper composite production line as described in claim 6, characterized in that: A rectangular filter plate (205) is fixedly installed on the inner end of the heating plate (201), and the filter plate (205) has a through-hole structure in a rectangular array. A set of second slide rails (206) is fixedly installed on both sides of the filter plate (205). A first lead screw (207) is rotatably installed on the inner side of the set of second slide rails (206) on the right side. A sixth motor (208) is fixedly installed on one side of the set of second slide rails (206) on the right side, and the sixth motor (208) is connected to the first lead screw (207) for transmission.

8. The grey board paper composite production line as described in claim 7, characterized in that: A rectangular block structure connecting block (209) is slidably arranged between the two sets of second slide rails (206), and the connecting block (209) is connected to the first lead screw (207) by threaded engagement. A brush structure is provided at the bottom of the connecting block (209). A vacuum cleaner (210) is fixedly arranged on one side of the connecting block (209). A set of preheating air outlets (211) is fixedly connected to the front of the two sets of heating plates (201) at the front.

9. The grey board paper composite production line as described in claim 1, characterized in that: The heat exchange chamber (3) adopts a rectangular groove structure, and a filter screen is provided on one side of the opening of the heat exchange chamber (3); an S-shaped heat exchange tube (301) is provided inside the heat exchange chamber (3); a second blower (302) is fixedly provided on one side of the heat exchange chamber (3), and the second blower (302) is connected to the preheating air outlet (211).

10. The grey board paper composite production line as described in claim 9, characterized in that: Both sides of the heat exchange chamber (3) are fixedly provided with S-shaped baffles (303); the top of the heat exchange tube (301) is fixedly connected with an air inlet (304), and the air inlet (304) is connected to the drying cylinder; the bottom of the heat exchange tube (301) is provided with an air outlet (305).

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