A paper-plastic product production line

Abstract

The utility model discloses a paper plastic product production line, paper plastic product production line includes: main control system, slurry forming machine, automatic cutting machine, a plurality of hot press setting machine and a plurality of handling robot, slurry forming machine sets up between automatic cutting machine and a plurality of hot press setting machine, just slurry forming machine, automatic cutting machine and a plurality of hot press setting machine form the activity space of handling robot between, main control system is provided with a plurality of planning motion path, a plurality of planning motion path and a plurality of handling robot one to one corresponding setting, a plurality of planning motion path independent distribution each other. Through setting the production line of automation operation, cooperate handling robot and carry out intelligent sorting and handling, ensure the accurate link between each process, improve production efficiency and product yield.

Description

Technical Field

[0001] This utility model relates to the field of paper-plastic production line technology, specifically to a paper-plastic product production line. Background Technology

[0002] The main processes of paper-plastic product manufacturing include setting up pulp raw materials, using a molding machine to produce wet paper-plastic preforms, heating and shaping them in a mold to prepare dry preforms, and finally cutting and separating the products using die-cutting equipment. In the traditional pulp molding industry, a semi-automatic production mode is generally adopted, with operators handling products, scooping pulp for molding, and controlling hot pressing and shaping. This results in low production efficiency and a low pass rate. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology. This utility model provides a paper-plastic product production line. By setting up an automated production line and cooperating with handling robots for intelligent sorting and handling, it ensures precise connection between each process and improves production efficiency and product yield.

[0004] This utility model provides a paper-plastic product production line, which includes: a main control system, a pulp forming machine, an automatic cutting machine, several hot pressing and shaping machines, and several handling robots; The pulp forming machine is positioned between the automatic cutting machine and several hot pressing and shaping machines, and the pulp forming machine, the automatic cutting machine, and the several hot pressing and shaping machines form the activity space of the transport robot; The main control system is configured with several planned motion paths, each corresponding to a specific transport robot, and these planned motion paths are distributed independently of each other.

[0005] Furthermore, the pulp forming machine includes a frame, an upper mold, and a lower mold. The upper mold is fixed at the upper end of the frame, and the lower mold is movably disposed within the frame.

[0006] Furthermore, the slurry forming machine also includes a slurry tank, which is located at the lower end of the frame, and the movement path of the lower mold passes over the top and middle of the slurry tank.

[0007] Furthermore, the plurality of transport robots includes one or more first transport robots and one or more second transport robots; The first handling robot's movement range covers the slurry forming machine, the automatic cutting machine, and several hot pressing and shaping machines, and the first handling robot is used for the transfer of blanks between the slurry forming machine, the automatic cutting machine, and several hot pressing and shaping machines; The second handling robot is located on one side of the automatic cutting machine and is used for product unloading, transportation, and stacking.

[0008] Furthermore, the first handling robot is equipped with a first handling fixture, which includes: a support plate, a first suction cup group disposed on the front of the support plate, and a second suction cup group disposed on the back of the support plate; The first suction cup group is used to adsorb and clamp wet blank products, the second suction cup group is used to adsorb and clamp semi-dry blank products, or the second suction cup group is used to adsorb dry blank products.

[0009] Furthermore, the first suction cup group is provided with several large-diameter suction cups, which are matched with the outer contour dimensions of the product.

[0010] Furthermore, the second suction cup group is equipped with several small-diameter suction cups. When the second suction cup group performs the handling and gripping task, the several small-diameter suction cups are attached to the bottom surface of several products one by one.

[0011] Furthermore, the second handling robot is equipped with a second handling fixture, which includes: a support frame, a plurality of finished product suction cups disposed on the support frame, and a waste pusher plate disposed on one side of the support frame; A waste collection box is provided on one side of the automatic cutting machine, and the waste collection box is located in the pushing direction of the waste pusher plate.

[0012] Furthermore, several finished suction cups are arranged in an array on the support frame to form several finished suction cup queues; Several rows of finished suction cups are arranged in an independent drive configuration based on the control air path layout.

[0013] Furthermore, the paper-plastic product production line also includes a finished product discharge line, which is provided with a finished product stacking area.

[0014] This utility model provides a control method and production line for paper-plastic products. Through fully automated wet blank transfer, segmented temperature-controlled hot pressing and shaping, intelligent sorting and palletizing and other technical means, the entire production process is fully automated, effectively reducing manual intervention and ensuring precise connection between each process. It has the advantages of improving production efficiency, ensuring product quality and reducing operating costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the layout of the paper-plastic product production line in an embodiment of this utility model; Figure 2 This is a top view of the layout of the paper-plastic product production line in this embodiment of the utility model; Figure 3 This is a schematic diagram of the structure of the first handling robot in the paper-plastic product production line of this utility model embodiment; Figure 4 This is a schematic diagram of the structure of the second handling robot in the paper-plastic product production line of this utility model embodiment. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please refer to Figures 1 to 4 The paper-plastic product production line includes: a main control system, a pulp forming machine 4, an automatic cutting machine 6, several hot pressing and shaping machines 3, and several handling robots; the pulp forming machine 4 is used to prepare wet blank products, the hot pressing and shaping machine 3 is used to prepare dry blank products, and the automatic cutting machine 6 is used to separate paper-plastic products and model waste. The main control system is used to acquire the working signals of the pulp forming machine 4, the automatic cutting machine 6, and several hot pressing and shaping machines 3, and to schedule several handling robots to perform handling operations according to the working signals.

[0019] Specifically, the main control system communicates with each device via a wired communication module, while each device uses wirelessly connected sensors for data acquisition, allowing the main control system to receive real-time data on the device's operating status. The slurry forming machine 4 is equipped with a vacuum adsorption device to form wet preforms in the slurry. The hot press setting machine 3 has an internal temperature sensor to monitor the heating temperature of the pressing mold. The handling robot can be configured as a multi-axis robotic arm or a track-type transport device, with its end effector including a vacuum suction cup or clamping mechanism. The main control system generates a handling command based on the completion signal of the hot press setting machine 3, controlling the handling robot to transfer the dry preforms to the automatic cutting machine 6. After the automatic cutting machine 6 completes cutting, the main control system triggers the second handling robot 2 to perform a sorting and transport operation, transporting the paper-plastic workpieces and model waste to the finished product output line 7 and the waste collection area 5, respectively.

[0020] The pulp forming machine 4 is positioned between the automatic cutting machine 6 and several hot pressing and shaping machines 3. The pulp forming machine 4, the automatic cutting machine 6, and the several hot pressing and shaping machines 3 form the activity space for the transport robot. The transport robot moves within the activity space and transports the processed products between the pulp forming machine 4, the automatic cutting machine 6, and the several hot pressing and shaping machines 3. This can replace manual material transfer by operators, thereby improving processing efficiency.

[0021] The main control system is equipped with several planned motion paths, each corresponding to a specific number of transport robots. These planned motion paths are independently distributed, ensuring that the transport tracks of the robots are independent of each other. This avoids motion interference between the robots and ensures the accuracy and reliability of the work control of the paper-plastic product production line.

[0022] Specifically, the plurality of transport robots include one or more first transport robots 1 and one or more second transport robots 2. The range of motion of the first transport robot 1 covers the pulp forming machine 4, the automatic cutting machine 6, and the plurality of hot pressing and shaping machines 3. The first transport robot 1 is used for the transfer of blanks between the pulp forming machine 4, the automatic cutting machine 6, and the plurality of hot pressing and shaping machines 3. The second handling robot 2 is located on one side of the automatic cutting machine 6. The second handling robot 2 is used for product unloading, transportation and stacking.

[0023] Specifically, after the pulp forming machine 4 prepares the wet blank product, the main control system receives the forming completion signal and drives the first handling robot 1 to transfer the wet blank product to the preheated hot press forming machine 3. The hot press forming machine 3 performs vacuum dehumidification and hot pressing within a temperature range of 150℃~250℃. After processing, it sends a work completion signal to the main control system. The main control system generates a second handling instruction based on this signal, controlling the first handling robot 1 to transfer the dry blank product to the processing station of the automatic cutting machine 6. After the automatic cutting machine 6 completes the cutting, the main control system triggers the second handling robot 2 to adsorb and clamp the paper-plastic workpiece, and at the same time pushes the model waste into the waste collection area 5 through the push plate 21 mechanism. After the handling robot transports the paper-plastic workpiece to the finished product output line 7, it completes the stacking in a layered manner. During this process, the main control system ensures seamless material transfer between various devices by dynamically scheduling multiple handling robots, avoiding process delays or operational errors caused by manual intervention. By controlling multiple hot press forming machines 3 in parallel, the drying and forming cycle of the wet blank product can be shortened, and the overall production efficiency can be improved.

[0024] Specifically, the pulp forming machine 4 includes a frame, an upper mold, and a lower mold. The upper mold is fixed at the upper end of the frame, and the lower mold is movably disposed within the frame. The frame is provided with guide rails for the lower mold to move up and down, which can limit the movement area of ​​the lower mold, ensure the accuracy of the lower mold's up and down movement, and ensure the accuracy of the mold closing and pressing between the upper mold and the lower mold.

[0025] Specifically, the slurry forming machine 4 also includes a slurry tank, which is located at the lower end of the frame. The movement path of the lower mold passes through the top and middle of the slurry tank, meaning that the lower mold can be immersed in the slurry tank along the guide rail inside the frame, allowing the slurry in the tank to adhere to the surface of the lower mold. The lower mold rises along the guide rail of the frame, allowing the lower mold and the upper mold to close and press together, thus pressing the product.

[0026] Slurry is injected into the slurry tank of the slurry forming machine 4, and the lower mold is immersed in the slurry. The negative pressure parameter of vacuum adsorption can be adjusted between -0.03MPa and -0.1MPa, and the adsorption duration is set to 8-12 seconds to ensure uniform fiber distribution. The mold closing pressure is adjusted according to the thickness of the preform; for example, 0.5~1.0MPa pressure is used for thin-walled products, and 1.5~2.0MPa pressure is used for thick-walled products. The vacuum pipeline continues to operate after mold closing, and the drainage time is set to 15-20 seconds to fully remove free water.

[0027] Specifically, after the slurry is injected into the slurry tank of the slurry forming machine 4, the lower mold is completely immersed in the slurry to ensure that the fiber raw material is in full contact with the mold surface.

[0028] The product blank is formed by adsorption in the lower mold through vacuum adsorption; When the vacuum adsorption system is started, the fibers in the slurry are directionally adsorbed onto the mold surface under negative pressure, forming a uniformly dense green body structure.

[0029] The product preform is initially shaped by the closing of the upper and lower molds, resulting in a wet preform. When the upper mold moves downward and closes with the lower mold, the closing pressure compresses the gaps between the fiber layers, and excess moisture is discharged into the slurry tank through the vacuum pipes built into the mold. During this process, the synergistic control of adsorption pressure and mold closing pressure reduces the moisture content of the preform to 25%-30%, resulting in a tightly interwoven fiber structure, providing a wet preform with a stable shape for subsequent hot pressing and shaping.

[0030] Specifically, the hot pressing and shaping machine 3 is equipped with a pressing mold. The preheating of the pressing mold can be achieved through an electric heating element or a heat transfer oil circulation system, and the first heating temperature range can be 100℃ to 150℃. The conveying of the wet preform product is performed by the first handling robot 1, and the hot pressing pressure can be set to 5MPa to 10MPa. The second heating temperature range can be further set to 150℃ to 250℃, which needs to be higher than the preheating temperature to maintain continuous heat input during the hot pressing process. The preheating temperature of the pressing mold and the hot pressing temperature form a gradient control, wherein the preheating stage creates a uniform temperature field on the mold surface, the vacuum dehumidification stage accelerates moisture migration through a negative pressure environment, and the high temperature conditions in the hot pressing stage promote the tight cross-linking of the fiber structure.

[0031] Furthermore, the pressing mold is preheated to the first heating temperature range, ensuring uniform temperature distribution on the mold surface and preventing localized shrinkage and deformation when the wet preform comes into contact with the cold mold. The preheated mold is monitored in real-time by a temperature sensor to ensure temperature fluctuations do not exceed ±3℃. The wet preform is precisely positioned into the mold cavity by a handling robot. Immediately after the mold closes, a vacuum pump is activated to extract air from the cavity, causing the moisture inside the wet preform to rapidly vaporize under negative pressure. Further, pressure is applied to the mold while maintaining vacuum; the pressure value is adjusted according to the product thickness, for example, 8MPa pressure is applied to a 3mm thick product and maintained for 50 seconds. High-temperature hot pressing causes plastic deformation of the pulp fibers and the formation of hydrogen bonds, while the vacuum environment continuously removes residual water vapor. After hot pressing, the mold separates, and the moisture content of the dry preform can be controlled below 8%, with compressive strength increased to over 15MPa. This process, through the synergistic effect of staged temperature control and vacuum pressure, effectively eliminates thermal stress caused by temperature differences in the mold, while simultaneously improving moisture removal efficiency and product density.

[0032] Specifically, after the pressing mold is preheated to 150℃~250℃, the wet blank product undergoes hot pressing within a sealed mold cavity. The mold locking time cycle is precisely controlled within the range of 40 to 60 seconds, for example, 45 seconds is set as a baseline value via PLC. At this time, the uniformity of the mold temperature field distribution reaches over 92%, and the moisture evaporation rate is stable between 85% and 90%. When the timer reaches the set value, the pneumatic components of the mold separation mechanism are activated, driving the upper mold to rise at a speed of 10mm / s. Simultaneously, a proximity switch detects that the separation displacement has reached the 8mm threshold, triggering a work completion signal. After receiving this signal, the main control system sends a second handling command containing the target coordinates and handling path to the first handling robot 1 via the CAN bus. Upon receiving the command, the end effector of the handling robot uses a vacuum suction cup to adsorb the dry blank product with a negative pressure of 0.3MPa and completes the picking action within 3 seconds. This process controls the time matching error between the hot pressing process and the handling process within ±1.5 seconds, increases equipment utilization to over 93%, and avoids temperature fluctuations on the mold surface caused by manual intervention.

[0033] In this process, the preheating effect of the first heating stage establishes a uniform temperature field for the subsequent high-temperature hot pressing, while the hot pressing treatment in the second heating stage, under vacuum conditions, increases the moisture removal rate to 92%~95%, while reducing the hot pressing energy consumption to 65%~70% of the conventional single-stage heating mode. Through staged temperature control, the moisture content of the wet blank product gradually decreases from the initial 45%~50% to 8%~12%, and the density deviation of the final dry blank product is controlled within ±0.15g / cm³.

[0034] After the hot pressing and shaping machine 3 completes the hot pressing and shaping of the wet blank product, the main control system obtains the operation completion signal of the hot pressing and shaping machine 3, and generates a second handling instruction based on the operation completion signal, so that the main control system can control the first handling robot 1 to perform handling operation based on the second handling instruction, and drive the first handling robot 1 to transport the dry blank product into the automatic cutting machine 6.

[0035] Specifically, the first handling robot 1 is equipped with a first handling fixture, which includes: a support plate, a first suction cup assembly 11 disposed on the front of the support plate, and a second suction cup assembly 12 disposed on the back of the support plate. The first suction cup assembly 11 is used to adsorb and grip wet blank products, and the second suction cup assembly 12 is used to adsorb and grip semi-dry blank products, or the second suction cup assembly 12 is used to adsorb dry blank products. The first handling robot 1's handling fixture is equipped with two types of suction cup assemblies, allowing the first handling robot 1 to adjust the gripping suction cup assembly according to the product's condition, thereby improving the handling efficiency of the first handling robot. The first handling robot 1 has convenient and reliable clamping operation, and can meet the handling needs of processed products at different processing stations. After the pulp forming machine 4 completes the initial pressing and molding operation of the paper-plastic product, the first handling robot 1 can use the first suction cup group 11 of the first handling fixture to adsorb and grab the wet blank product of the pulp forming machine 4, so that the first handling robot 1 carries the wet blank product of the pulp forming machine 4 and transports the wet blank product to the hot pressing and shaping machine 3, so that the hot pressing and shaping machine 3 can heat and shape the wet blank product.

[0036] Specifically, the first suction cup group 11 is equipped with several large-diameter suction cups. The large-diameter suction cups are matched with the outer contour dimensions of the product. The outer contour of the large-diameter suction cups is adapted to the outer contour of the wet blank product of the pulp forming machine 4. When the pulp forming machine 4 completes the pressing of the wet blank product, the upper mold adsorbs the wet blank product into the mold cavity of the upper mold based on vacuum adsorption. The lower mold is driven by the internal drive mechanism of the pulp forming machine 4 to descend into the pulp tank for immersion and attachment of the next product, so as to improve the production cycle and production efficiency of the pulp forming machine 4.

[0037] Furthermore, the first handling robot 1, by cooperating with the first suction cup group 11 and the upper clamp, adapts the first suction cup group 11 to the wet blank product in the upper clamp. Based on the adsorption of the wet blank product by the first suction cup group 11, the upper clamp performs vacuum breaking treatment on the wet blank product, so that the first suction cup group 11 can adsorb and fix the wet blank product, enabling the first handling robot 1 to obtain the wet blank product in the slurry forming machine 4 and realize the transfer of the wet blank product.

[0038] Furthermore, the wet blank product is in a preliminary pressing state, has a lot of moisture, and has poor structural stability. By using the first suction cup group 11 of the first handling robot 1 to adsorb and support the wet blank product, the structural stability of the wet blank product during the handling process can be ensured. Moreover, the outer contour of the first suction cup group 11 is adapted to the outer contour of the wet blank product, which can maintain the appearance of the wet blank product.

[0039] Specifically, the second suction cup group 12 is equipped with several small-diameter suction cups. When the second suction cup group 12 performs the handling and gripping task, the several small-diameter suction cups are attached to the bottom surface of several products one by one. The several small-diameter suction cups are in contact with the bottom surface of the semi-dry or dry products, which can obtain the semi-dry or dry products in the hot press setting machine 3 and complete the adsorption and transfer operation. The first handling robot 1 uses the second suction cup group 12 to adsorb and transport the dry products to the automatic cutting machine 6, and the automatic cutting machine 6 realizes the cutting and separation of paper-plastic products and waste materials.

[0040] Furthermore, the small-diameter suction cup is equipped with a spring 221, which provides a buffering force for the handling and adsorption operation of the second handling robot 2. This allows the second suction cup assembly 2 to be mechanically buffered based on the spring force when it comes into contact with the paper-plastic product, thereby reducing the risk of the second handling robot 2 squeezing and damaging the paper-plastic product.

[0041] Furthermore, the automatic cutting machine 6 is equipped with a cutting frame with suction cups, which allows the paper-plastic products to be adsorbed during the cutting process and to cut several paper-plastic products into pieces. Waste residue can be formed on the workbench, while the paper-plastic products are adsorbed inside the cutting frame.

[0042] Specifically, the second handling robot 2 is equipped with a second handling fixture, which includes: a support frame, a plurality of finished product suction cups 22 disposed on the support frame, and a waste push plate 21 disposed on one side of the support frame; A waste collection box 5 is provided on one side of the automatic cutting machine 6. The waste collection box 5 is located in the pushing direction of the waste pusher plate 21. The pusher plate 21 can be made of stainless steel and its surface is coated with an anti-stick coating to prevent waste from adhering. For example, it can be driven by hydraulic power to achieve linear reciprocating motion and push the waste to the waste collection area 5. The adsorption component can be configured with a vacuum suction cup array, and its adsorption force range is set to 0.5~0.8MPa to adapt to paper and plastic products of different sizes. At the same time, the spacing between the suction cups can be adjusted to adapt to changes in product shape. During the palletizing process, the robot path planning algorithm can generate a stacking trajectory based on the size limit of the placement area. For example, the number of items stacked per layer is 4~6, and the number of stacking layers is limited to 5~8 layers. The timing of the actions of the pusher plate 21 and the adsorption component is synchronously controlled by the main control system to ensure that there is no time conflict between waste feeding and product clamping. For example, after the pusher plate 21 completes the feeding action, the adsorption component immediately performs the clamping operation.

[0043] Specifically, model waste is forcibly separated by push plate 21 and pushed away to waste collection box 5 to avoid residual waste interfering with subsequent processes. Several finished product suction cups 22 are arranged in an array on the supporting frame to form several rows of finished product suction cups 22. The rows of finished product suction cups 22 are independently driven based on the arrangement of control air paths. Several finished product suction cups 22 are configured as vacuum suction cups. The contact area between the vacuum suction cup and the product surface is controlled at 30%~50% to avoid indentation. At the same time, the suction force is dynamically adjusted according to the product weight. During the palletizing process, the robot end effector corrects the placement position deviation based on the vision positioning system. For example, a laser rangefinder is used to calibrate the stacking height in real time to ensure that the alignment accuracy error of each layer of products is less than ±1mm. Through the combination of mechanical sorting and suction handling, the sorting efficiency is increased to more than 3 times that of manual operation, and the palletizing and stacking qualification rate is increased to 99.5%.

[0044] Furthermore, by controlling the air path to achieve individual adsorption and release control of several finished product suction cups 22, the stability of adsorption control for paper-plastic products can be improved.

[0045] Specifically, the paper-plastic product production line also includes a finished product discharge line 7, which is provided with a finished product stacking area.

[0046] The main control system acquires the cutting completion signal from the automatic cutting machine 6 and generates a third handling instruction based on the cutting completion signal. This third handling instruction drives the second handling robot 2 to classify and handle several paper-plastic products and model waste. Specifically, the classification and handling of several paper-plastic products and model waste by driving the second handling robot 2 with the third handling instruction includes: pushing the model waste from the automatic cutting machine 6 onto the push plate 21 of the second handling robot 2; adsorbing and clamping several paper-plastic products using the adsorption component of the second handling robot 2; and transporting the several paper-plastic products to the placement area of ​​the finished product output line 7 for stacking.

[0047] The paper-plastic product production line provided in this embodiment of the utility model achieves full automation control of the production process through fully automated wet blank transfer, segmented temperature-controlled hot pressing and shaping, intelligent sorting and palletizing and other technical means. It effectively reduces manual intervention, ensures precise connection between each process, and has the advantages of improving production efficiency, ensuring product quality and reducing operating costs.

[0048] Furthermore, the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A paper-plastic product production line, characterized in that, The paper-plastic product production line includes: a main control system, a pulp forming machine, an automatic cutting machine, several hot pressing and shaping machines, and several handling robots; The pulp forming machine is positioned between the automatic cutting machine and several hot pressing and shaping machines, and the pulp forming machine, the automatic cutting machine, and the several hot pressing and shaping machines form the activity space of the transport robot; The main control system is configured with several planned motion paths, each corresponding to a specific transport robot, and these planned motion paths are distributed independently of each other.

2. The paper-plastic product production line as described in claim 1, characterized in that, The pulp forming machine includes a frame, an upper mold, and a lower mold. The upper mold is fixed at the upper end of the frame, and the lower mold is movably disposed within the frame.

3. The paper-plastic product production line as described in claim 2, characterized in that, The slurry forming machine also includes a slurry tank, which is located at the lower end of the frame, and the movement path of the lower mold passes over the top and middle of the slurry tank.

4. The paper-plastic product production line as described in claim 1, characterized in that, Several transport robots include one or more first transport robots and one or more second transport robots; The first handling robot's movement range covers the slurry forming machine, the automatic cutting machine, and several hot pressing and shaping machines, and the first handling robot is used for the transfer of blanks between the slurry forming machine, the automatic cutting machine, and several hot pressing and shaping machines; The second handling robot is located on one side of the automatic cutting machine and is used for product unloading, transportation, and stacking.

5. The paper-plastic product production line as described in claim 4, characterized in that, The first handling robot is equipped with a first handling fixture, which includes: a support plate, a first suction cup group disposed on the front of the support plate, and a second suction cup group disposed on the back of the support plate; The first suction cup group is used to adsorb and clamp wet blank products, the second suction cup group is used to adsorb and clamp semi-dry blank products, or the second suction cup group is used to adsorb dry blank products.

6. The paper-plastic product production line as described in claim 5, characterized in that, The first suction cup group is equipped with several large-diameter suction cups, which are matched with the outer contour dimensions of the product.

7. The paper-plastic product production line as described in claim 5, characterized in that, The second suction cup group is equipped with several small-diameter suction cups. When the second suction cup group performs the handling and gripping task, the several small-diameter suction cups are attached to the bottom surface of several products one by one.

8. The paper-plastic product production line as described in claim 4, characterized in that, The second handling robot is equipped with a second handling fixture, which includes: a support frame, a plurality of finished product suction cups disposed on the support frame, and a waste push plate disposed on one side of the support frame; A waste collection box is provided on one side of the automatic cutting machine, and the waste collection box is located in the pushing direction of the waste pusher plate.

9. The paper-plastic product production line as described in claim 8, characterized in that, Several finished suction cups are arranged in an array on the support frame to form several finished suction cup queues; Several rows of finished suction cups are arranged in an independent drive configuration based on the control air path layout.

10. The paper-plastic product production line as described in claim 1, characterized in that, The paper-plastic product production line also includes a finished product discharge line, which has a finished product stacking area.

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