Adhesive production equipment and adhesive preparation method

Abstract

The invention provides adhesive production equipment and a preparation method of an adhesive. The production equipment comprises a reaction device, a heating device and a control device, the stirring device is arranged at the downstream of the reaction device; the kneading device is arranged at the downstream of the stirring device; each of the kneading device, the reaction device and the stirring device internally comprises a containing cavity and a stirring mechanism arranged in the containing cavity; the filtering device comprises an input port, a heating unit and a filtering assembly; the input port is communicated with the lower end of the reaction device, the lower end of the stirring device, the lower end of the kneading device and the lower end of the rolling device respectively; the rolling device is arranged at the downstream of the kneading device; and the automatic cutting and combining device is used for automatically cutting and packaging the adhesive. The invention provides a highly integrated adhesive production system which can improve the uniformity of the high-viscosity adhesive and reduce the impurity content and the solvent content.

Description

Technical Field

[0001] The present application belongs to the technical field of adhesive production equipment, and specifically relates to an adhesive production equipment and an adhesive preparation method. Background Art

[0002] The performance of adhesives depends not only on their chemical composition, but also on the preparation process, which is closely related to the design of production equipment. Especially for high-viscosity adhesives with a viscosity greater than 10,000 cP, high-viscosity adhesives have great rheological complexity and more complex formulas. They often contain a large amount of solid fillers, thickeners and other ingredients, which are very prone to stratification or precipitation during the transmission and transfer process, and their stability is much lower than that of conventional low-viscosity adhesives. In addition, due to its high viscosity, it is difficult to thoroughly mix the raw materials, and it is difficult to effectively remove solvents and impurities during the production process, which easily leads to excessive residual solvents and impurities in the product, which not only affects the performance of the adhesive, but also increases health and environmental risks. Summary of the invention

[0003] The present application provides an adhesive production device and an adhesive preparation method, which can improve the uniformity of the adhesive and reduce the impurity content and solvent content of the adhesive, and is particularly suitable for producing high-quality high-viscosity adhesive products.

[0004] The first aspect of the present application provides an adhesive production device, comprising:

[0005] A reaction device, used for reacting the reaction materials to obtain a preliminary reactant;

[0006] A stirring device, disposed downstream of the reaction device, is used to stir the primary reactants to fully react and obtain secondary reactants;

[0007] A kneading device is arranged downstream of the stirring device and is used to stir the secondary reactants; the kneading device, the reaction device and the stirring device all include a containing chamber and a stirring mechanism arranged in the containing chamber;

[0008] A filtering device, the filtering device comprises an input port, a heating unit and a filtering assembly; the input port is respectively connected to the lower end of the reaction device, the lower end of the stirring device, the lower end of the kneading device and the lower end of the roller pressing device; and is used to remove impurities and recover solvents in the production process;

[0009] A roller pressing device, arranged downstream of the kneading device, for roller pressing the material inputted from the kneading device into the roller pressing device;

[0010] The automatic cutting device is connected with the rolling device and is used for automatically cutting and packaging the adhesive.

[0011] In a feasible implementation manner of the first aspect of the present application, the filtering device is provided with an output port connected to the reaction device, for inputting the solvent recovered by the filtering device into the reaction device to achieve recycling.

[0012] In a feasible implementation of the first aspect of the present application, the filter assembly includes a first filter unit, a second filter unit and a third filter unit along a direction away from the input port of the filter device, the pore size of the filter holes of the first filter unit is larger than the pore size of the filter holes of the second filter unit, which is larger than the pore size of the filter holes of the third filter unit; the first filter unit, the second filter unit and the third filter unit are all provided with output ports for collecting materials intercepted by the filter units.

[0013] In a feasible implementation manner of the first aspect of the present application, the filter device also includes an automatic scraping component and a quality sensor. The automatic scraping component is arranged on the inner wall of the filter device. The quality sensors are connected to the first filter unit, the second filter unit and the third filter unit, and are used to monitor the quality of the substances retained by the filter units. When the quality sensor detects that the mass change rate of the mass of the substance retained on the filter unit within 5 minutes is less than 5%, the automatic scraping component scrapes away the substance retained by the corresponding filter unit.

[0014] In a feasible implementation manner of the first aspect of the present application, the stirring mechanism in the stirring device includes a first rotating shaft and a first propeller connected to the first rotating shaft, and a second rotating shaft and a second propeller connected to the second rotating shaft; the driving device drives the first propeller and the second propeller to rotate in opposite directions.

[0015] In a feasible implementation manner of the first aspect of the present application, the rolling device includes at least three groups of rolling units arranged along the first direction, and the three groups of rolling units each include a first rotating roller and a first rolling roller located outside the first rotating roller, a second rotating roller and a second rolling roller located outside the second rotating roller; the first rolling roller and the second rolling roller are provided with threads with opposite rotation directions on the outer sides;

[0016] The distance between the first laminating roller and the second laminating roller in the two groups of laminating units close to the kneading device is greater than the distance between the first laminating roller and the second laminating roller in the two groups of laminating units close to the automatic cutting device.

[0017] In a feasible implementation manner of the first aspect of the present application, the distance between the first rolling roller and the second rolling roller in the two groups of rolling units close to the kneading device is 2mm~3mm; the distance between the first rolling roller and the second rolling roller in the two groups of rolling units close to the automatic cutting device is 0.3mm~0.8mm.

[0018] The pressure of the two rolling units near the kneading device rolling the adhesive is 300N / cm 2 ~500N / cm 2; The pressure of the rolling unit near the automatic cutting device rolling the adhesive is 50N / cm 2 ~200N / cm 2 ; The roller speeds of the first rolling roller and the second rolling roller are both less than 1m / min.

[0019] In a feasible implementation manner of the first aspect of the present application, the adhesive production equipment also includes a heating device and a feeding device, the heating device is arranged on the outer wall of the accommodating chamber of the reaction device; the feeding device and the reaction device are both provided with a temperature sensor and a quality sensor; the feeding device, the reaction device, the heating device, the kneading device, the filtering device and the rolling device are all connected to the control electrical appliance.

[0020] In a feasible implementation manner of the first aspect of the present application, a first solenoid valve is provided between the feeding device and the reaction device; a second solenoid valve is provided between the reaction device and the stirring device, and both the first solenoid valve and the second solenoid valve are connected to the control electrical appliance; and are used to prevent the adhesive material in the stirring device from flowing back to the reaction device during the production process.

[0021] A second aspect of the present application provides a method for preparing an adhesive, comprising:

[0022] The raw materials are placed in a feeding device for mixing, and then transported to a reaction device for stirring and reaction to obtain a preliminary reactant;

[0023] The reactants are input into a stirring device for secondary stirring to obtain a secondary reactant; the secondary reactants are input into a kneading device for stirring to obtain a refined secondary reactant; the refined secondary reactants are input into a rolling device for pressing, and transported to an automatic cutting device to automatically cut and package the adhesive; wherein the filtering device is connected to the reaction device, the stirring device, the kneading device and the rolling device to remove impurities in the preparation process and recover the solvent; the viscosity of the adhesive is 10000cP to 1000000cP.

[0024] In a feasible implementation manner of the second aspect of the present application, during the preparation of the reactants, the stirring rate is 20rpm / min to 100rpm / min; during the preparation of the secondary reactants, the stirring rate is 150rpm / min to 300rpm / min; during the preparation of the refined secondary reactants, the stirring rate is 20rpm / min to 100rpm / min. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of adhesive production equipment in some embodiments of the present application;

[0026] Among them: 1, feeding device; 2, automatic control system; 3, heating device; 4, reaction device; 5, stirring device; 6, kneading device; 7, rolling device; 8, automatic cutting device; 9, filtering device;

[0027] Figure 2 is a schematic diagram of the structure of the filtering device in some embodiments of the present application;

[0028] Among them, 9-1, automatic scraping mud component; 9-2, first filter unit; 9-3, second filter unit; 9-4, third filter unit; 9-5, output port; 9-6, quality sensor; 9-7, output port of recovered solvent;

[0029] Figure 3 is a schematic diagram of the structure of a stirring device in some embodiments of the present application;

[0030] Among them, 5-1, the first rotation axis; 5-2, the first propeller; 5-3, the second rotation axis; 5-4, the second propeller; 5-5, the viewing window;

[0031] Figure 4 is a schematic structural diagram of a rolling device in some embodiments of the present application;

[0032] Among them, 7-1, the second rolling roller; 7-2, the first rolling roller; 7-3, the first rotating roller; 7-4, the second rotating roller; 7-5, the thread; 7-6, the rolling roller; 7-7, the conveyor belt speed controller; 7-8, the rotating roller speed controller; 7-9, the control panel; 7-10, the electric cabinet. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0035] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0039] The term "plurality" used in the present application refers to two or more (including two).

[0040] The above-mentioned summary of the invention of the present application is not intended to describe each disclosed embodiment or each implementation in the present application. The following description more specifically illustrates exemplary embodiments. In many places throughout the application, guidance is provided by a series of examples, which can be used in various combinations. In each example, enumeration is only used as a representative group and should not be interpreted as exhaustive.

[0041] For high-viscosity adhesives with a viscosity greater than 10,000 cP, the rheological complexity of high-viscosity adhesives is large, the formula is more complicated, and they often contain a large amount of solid fillers, thickeners and other ingredients. They are very prone to stratification or precipitation during the transmission and transfer process, and their stability is much lower than that of conventional low-viscosity adhesives. In addition, due to their high viscosity, it is difficult to thoroughly mix the raw materials, and it is difficult to effectively remove solvents and impurities during the production process, which easily leads to excessive residual solvents and impurities in the product, which not only affects the performance of the adhesive, but also increases health and environmental risks.

[0042] Currently, most adhesive production systems on the market use a basic combination of equipment, including feeding devices, reactors, heating and cooling facilities, etc., which not only have low production efficiency, but also have unsatisfactory uniformity of adhesives, and elimination of impurities and solvents, making it difficult to produce high-quality, high-viscosity adhesives.

[0043] In view of this, the inventors proposed an adhesive production device and an adhesive preparation method in this application, which can improve the uniformity of the obtained adhesive and reduce the impurity content and solvent content of the adhesive, and is particularly suitable for producing high-quality high-viscosity adhesive products.

[0044] like Figure 1 As shown, the first aspect of the present application provides an adhesive production device, including:

[0045] A reaction device, used for reacting the reaction materials to obtain a preliminary reactant;

[0046] A stirring device, disposed downstream of the reaction device, is used to stir the primary reactants to fully react and obtain secondary reactants;

[0047] A kneading device is arranged downstream of the stirring device and is used to stir the secondary reactants; the kneading device, the reaction device and the stirring device all include a containing chamber and a stirring mechanism arranged in the containing chamber;

[0048] A filtering device, the filtering device comprises an input port, a heating unit and a filtering assembly; the input port is respectively connected to the lower end of the reaction device, the lower end of the stirring device, the lower end of the kneading device and the lower end of the roller pressing device; and is used to remove impurities and recover solvents in the production process;

[0049] A roller pressing device, arranged downstream of the kneading device, for roller pressing the material inputted from the kneading device into the roller pressing device;

[0050] The automatic cutting device is connected with the rolling device and is used for automatically cutting and packaging the adhesive.

[0051] The adhesive production equipment of the present application provides a closed, highly integrated adhesive production system. The material enters the reaction device from the feeding device for copolymerization reaction. As the reaction proceeds, the viscosity of the product gradually increases, and it is necessary to continuously add solvent for dilution and stirring to promote the complete reaction. After the reaction stops, the viscosity will continue to increase. Therefore, it is difficult to remove large particles and impurities in the adhesive and eliminate the solvent. It is easy for the particles in the adhesive to be unevenly dispersed, the product consistency and uniformity to be poor, the impurity content is high, and the solvent residue is large.

[0052] First, the present application provides a stirring device including a stirring mechanism and a kneading device between the reaction device and the roller pressing device, thereby increasing secondary stirring. Together with the stirring in the reaction device, a total of three-stage stirring is formed, which can improve the uniformity of the adhesive.

[0053] Secondly, the stirring device with secondary stirring is particularly important, because for high-viscosity reactive adhesives, the viscosity will increase with time. In order to allow the raw materials to fully polymerize, the reaction device is usually slow and the filler is roughly processed; the kneading device is mainly used to refine the adhesive particles (refining refers to reducing the particle size of the particles), which is a low-speed and high-shear state. The dispersion effect of the filler in the high-viscosity adhesive is very limited, and the improvement effect of the uniformity of the produced adhesive is not much improved; and by arranging a stirring device with a secondary stirring mechanism in the reaction device and the kneading device, the product output by the reaction device can be subjected to high-speed secondary stirring before entering the kneading device, thereby improving the dispersibility of auxiliary materials such as fillers in the adhesive, discharging bubbles that are easily retained in the system under high viscosity conditions, improving the viscosity uniformity inside the adhesive, avoiding product stratification or precipitation during the production process, improving mixing efficiency and optimizing material fluidity and uniformity.

[0054] In addition, due to the high viscosity of the adhesive, it is difficult to achieve a good removal effect of the impurities and solvents inside it at one time. The production equipment of the present application also includes a filtering device with multiple interfaces to communicate and cooperate with other devices, so that each device can filter simultaneously during the post-processing of the adhesive, and achieve multiple graded precipitation filtration, which can help discharge the unreacted components and other impurity particles in the adhesive from each link, and timely and effectively remove the solvent in the adhesive. Therefore, through the arrangement and connection of each device in the adhesive production equipment of the present application, the uniformity of the adhesive can be improved, and the impurity particles and solvents in the adhesive can be removed to obtain a high-viscosity adhesive product with good uniformity, low impurity content and low solvent residue.

[0055] At the same time, the filter device can also be used as a recovery device to recycle the recovered solvent and reduce production costs. For example, in some embodiments, the filter device includes an output port connected to the reaction device, which is used to input the solvent recovered by the filter device into the reaction device, forming a highly integrated circulation system, achieving high recycling of the solvent, greatly improving production efficiency and reducing production costs.

[0056] like Figure 2As shown, the present application further optimizes the structure of the filter device. In some embodiments, the filter assembly includes a first filter unit, a second filter unit, and a third filter unit along a direction away from the input port of the filter device. The pore size of the filter holes of the first filter unit is larger than the pore size of the filter holes of the second filter unit, which is larger than the pore size of the filter holes of the third filter unit; the first filter unit, the second filter unit, and the third filter unit are all provided with output ports for collecting materials intercepted by the filter units.

[0057] The first filter unit is used to intercept large particles or large agglomerated materials that are not dispersed during the reaction process, the second filter unit is used to intercept high-viscosity impurity solutions, and the heating device in the filter unit can precipitate impurities. The third filter unit is used to intercept solutions with a viscosity of less than 10,000 cP. Through this design, on the one hand, large particles and impurities of adhesives in the production process can be more effectively removed, and solvents can be recovered and the recovered solvents can be made purer and easier to use; on the other hand, different substances can be graded and processed through the output ports of different filter units, which is convenient for classification and recycling.

[0058] The filtering device also includes an automatic scraping component and a quality sensor. The automatic scraping component is arranged on the inner wall of the filtering device. The quality sensors are connected to the first filter unit, the second filter unit and the third filter unit, and are used to monitor the quality of the substances retained by the filter units. When the quality sensor monitors that the mass change rate of the mass of the substances retained on the filter unit within 5 minutes is less than 5%, the automatic scraping component scrapes away the substances retained by the corresponding filter unit.

[0059] like Figure 3 As shown, the double helical structure in the stirring device can be a double helical shaft that rotates relatively to each other to stir the adhesive vigorously. In some embodiments, the stirring mechanism in the stirring device includes a first rotating shaft and a first propeller connected to the first rotating shaft, and a second rotating shaft and a second propeller connected to the second rotating shaft; the driving device drives the first propeller and the second propeller to rotate in opposite directions. There can also be a window on the stirring device to observe the stirring state of the material.

[0060] like Figure 4 As shown, in some embodiments, the rolling device includes at least three groups of rolling units arranged along the first direction, and the three groups of rolling units each include a first rotating roller and a first rolling roller located outside the first rotating roller, a second rotating roller and a second rolling roller located outside the second rotating roller; the first rolling roller and the second rolling roller are provided with threads with opposite rotation directions on the outside;

[0061] The distance between the first laminating roller and the second laminating roller in the two groups of laminating units close to the kneading device is greater than the distance between the first laminating roller and the second laminating roller in the two groups of laminating units close to the automatic cutting device.

[0062] The pressure of the two groups of rolling units near the kneading device when rolling the adhesive is greater than the pressure of the rolling units near the automatic cutting device when rolling the adhesive.

[0063] In some embodiments, the distance between the first rolling roller and the second rolling roller in the two rolling units near the kneading device is 2 mm to 3 mm; the distance between the first rolling roller and the second rolling roller in the two rolling units near the automatic cutting device is 0.3 mm to 0.8 mm.

[0064] The pressure of the two rolling units near the kneading device rolling the adhesive is 300N / cm 2 ~500N / cm 2 ; The pressure of the rolling unit near the automatic cutting device rolling the adhesive is 50N / cm 2 ~200N / cm 2 ; The roller speeds of the first rolling roller and the second rolling roller are both less than 1m / min.

[0065] Conventional rolling devices, such as a rolling device with a single rolling unit, can be used to press ordinary or low-viscosity adhesives, but for high-viscosity adhesives, the composition is complex and the viscosity is high, and further optimization of the device is required to achieve better results. The present application optimizes the rolling device as described above to make the high-viscosity adhesive more evenly pressed, and through the differentiated design between different rolling units and the change in the distance between the rolling rollers, it is possible to reduce energy consumption while achieving uniform pressing.

[0066] In addition, the inventor of the present application also connects the lower end of the roller pressing device with the filtering device, so as to further recover the solvent in the roller pressing device in a timely manner and improve the recovery rate.

[0067] In some embodiments, a first solenoid valve is provided between the feeding device and the reaction device; a second solenoid valve is provided between the reaction device and the stirring device to prevent the adhesive material in the stirring device from flowing back to the reaction device during the production process.

[0068] In some embodiments, the adhesive production equipment further includes a heating device and a feeding device, the heating device is arranged on the outer wall of the containing chamber of the reaction device; the feeding device and the reaction device are both provided with a temperature sensor and a quality sensor; the feeding device, the reaction device, the heating device, the kneading device, the filtering device and the rolling device are all connected to the control electrical device. The first solenoid valve and the second solenoid valve may also be connected to the control electrical device.

[0069] The mass sensor can be arranged in the metering tank, which is fixed to the bottom of the feeding device and the reaction device by a magnetic clamping device. The clamping device ensures that the position of the metering tank remains unchanged during stirring, and even when the cylinder rotates, its position remains stationary relative to the cylinder, ensuring accurate measurement.

[0070] The entire production system of the present application is managed by a control device, which connects all key sensors and solenoid valves to achieve automation and precise control. The present application can be controlled by a control appliance, collect the temperature and quality data of the materials in each device, calculate the possible value of the viscosity of the material, and then adjust the feeding speed, feeding amount, stirring speed, and heating temperature.

[0071] A second aspect of the present application provides a method for preparing an adhesive, comprising:

[0072] The raw materials are placed in a feeding device for mixing, and then transported to a reaction device for stirring and reaction to obtain a preliminary reactant;

[0073] The reactants are input into a stirring device for secondary stirring to obtain a secondary reactant; the secondary reactants are input into a kneading device for stirring to obtain a refined secondary reactant; the refined secondary reactants are input into a rolling device for pressing, and transported to an automatic cutting device to automatically cut and package the adhesive; wherein the filtering device is connected to the reaction device, the stirring device, the kneading device and the rolling device to remove impurities in the preparation process and recover the solvent; the viscosity of the adhesive is 10000cP to 1000000cP.

[0074] In some embodiments, during the preparation of the reactants, the stirring rate is 20 rpm / min to 100 rpm / min; during the preparation of the secondary reactants, the stirring rate is 150 rpm / min to 300 rpm / min; during the preparation of the refined secondary reactants, the stirring rate is 20 rpm / min to 100 rpm / min.

[0075] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An adhesive production equipment, characterized in that: include: A reaction device, used for reacting the reaction materials to obtain a preliminary reactant; A stirring device, disposed downstream of the reaction device, for stirring the primary reactant to fully react and obtain a secondary reactant; A kneading device, arranged downstream of the stirring device, for stirring the secondary reactant; the kneading device, the reaction device and the stirring device all include a containing chamber and a stirring mechanism arranged in the containing chamber; A filtering device, the filtering device comprising an input port, a heating unit and a filtering assembly; the input port is respectively connected to the lower end of the reaction device, the lower end of the stirring device, the lower end of the kneading device and the lower end of the roller pressing device; and is used to remove impurities and recover solvents during the production process; A roller pressing device, arranged downstream of the kneading device, for roller pressing the material inputted from the kneading device into the roller pressing device; The automatic cutting device is connected to the rolling device and is used for automatically cutting and packaging the adhesive.

2. The adhesive production equipment according to claim 1, characterized in that: The filtering device is provided with an output port which is in communication with the reaction device and is used for inputting the solvent recovered by the filtering device into the reaction device to realize recycling.

3. The adhesive production equipment according to claim 1, characterized in that: The filter assembly includes a first filter unit, a second filter unit and a third filter unit along a direction away from the input port of the filter device, the pore size of the filter holes of the first filter unit is larger than the pore size of the filter holes of the second filter unit, which is larger than the pore size of the filter holes of the third filter unit; the first filter unit, the second filter unit and the third filter unit are all provided with output ports for collecting materials intercepted by the filter units.

4. The adhesive production equipment according to claim 1, characterized in that: The filtering device also includes an automatic scraping component and a quality sensor. The automatic scraping component is arranged on the inner wall of the filtering device. The quality sensors are connected to the first filter unit, the second filter unit and the third filter unit, and are used to monitor the quality of the substances retained by the filter units. When the quality sensor monitors that the mass change rate of the mass of the substances retained on the filter unit within 5 minutes is less than 5%, the automatic scraping component scrapes away the substances retained by the corresponding filter unit.

5. The adhesive production equipment according to claim 1, characterized in that: The stirring mechanism in the stirring device includes a first rotating shaft and a first propeller connected to the first rotating shaft, and a second rotating shaft and a second propeller connected to the second rotating shaft; the driving device drives the first propeller and the second propeller to rotate in opposite directions.

6. The adhesive production equipment according to claim 1, characterized in that: The rolling device comprises at least three groups of rolling units arranged along a first direction, wherein the three groups of rolling units each comprise a first rotating roller and a first rolling roller located outside the first rotating roller, a second rotating roller and a second rolling roller located outside the second rotating roller; the first rolling roller and the second rolling roller are provided with threads with opposite rotation directions on the outer sides thereof; The distance between the first laminating roller and the second laminating roller in the two groups of laminating units close to the kneading device is greater than the distance between the first laminating roller and the second laminating roller in the two groups of laminating units close to the automatic cutting device.

7. The adhesive production equipment according to claim 6, characterized in that: The distance between the first rolling roller and the second rolling roller in the two rolling units close to the kneading device is 2mm to 3mm; the distance between the first rolling roller and the second rolling roller in the two rolling units close to the automatic cutting device is 0.3mm to 0.8mm.

8. The adhesive production equipment according to claim 1, characterized in that: The adhesive production equipment also includes a heating device and a feeding device, wherein the heating device is arranged on the outer wall of the accommodating chamber of the reaction device; the feeding device and the reaction device are both provided with a temperature sensor and a quality sensor; the feeding device, the reaction device, the heating device, the kneading device, the filtering device and the rolling device are all connected to the control electrical appliance.

9. A method for preparing an adhesive, characterized in that: include: The raw materials are placed in a feeding device for mixing, and then transported to a reaction device for stirring and reaction to obtain a preliminary reactant; The reactants are input into a stirring device for secondary stirring to obtain a secondary reactant; the secondary reactants are input into a kneading device for stirring to obtain a refined secondary reactant; the refined secondary reactants are input into a rolling device for pressing, and transported to an automatic cutting device to automatically cut and package the adhesive; wherein the filtering device is connected to the reaction device, the stirring device, the kneading device and the rolling device to remove impurities in the preparation process and recover the solvent; the viscosity of the adhesive is 10000cP to 1000000cP.

10. The method for preparing the adhesive according to claim 9, characterized in that: During the preparation of the reactant, the stirring rate is 20rpm / min to 100rpm / min; during the preparation of the secondary reactant, the stirring rate is 150rpm / min to 300rpm / min; during the preparation of the refined secondary reactant, the stirring rate is 20rpm / min to 100rpm / min.

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