A waste recycling device and method for high-simulated resin handicrafts

Abstract

This invention relates to the field of simulated resin recycling technology, and discloses a waste recycling device and method for highly realistic resin crafts, including a frame; a melting component for melting the simulated resin crafts; an evaporation component for separating harmful gases from the melted mixed solution; and a condensation component for controlling the condensation and collection of the separated harmful gases. This waste recycling device and method for highly realistic resin crafts, by setting up a roller and flat plate structure in the evaporation component, forms a uniform liquid film in the solution during heating and rotation, significantly increasing the evaporation area, promoting the efficient evaporation and separation of harmful solvents such as dichloromethane, reducing residual impurities, and improving the purity of the recovered monomers. The equipment integrates functional modules such as melting, evaporation, condensation, and recycling, and, in conjunction with a servo motor driving a reciprocating screw and a circulation frame, realizes automatic feeding, rotary evaporation, and cooling water circulation pump operation, reducing manual intervention and improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of simulated resin recycling technology, specifically to a waste recycling device and method for highly simulated resin crafts. Background Technology

[0002] High-fidelity resin crafts (such as imitation jade, ivory, and wood carvings) are typically made of thermosetting or photocurable resins. These materials generate a large amount of waste during 3D printing or mold making, such as support structures, failed prints, and scraps. Because resin materials are difficult to biodegrade and contain volatile organic compounds (VOCs), direct disposal or incineration will pollute the environment and waste recyclable polymer resources.

[0003] Existing technologies lack efficient, closed-loop recycling equipment and methods for waste materials from simulated resin crafts. Common processing methods often involve mechanical crushing for use as filler or direct disposal, which fails to effectively separate harmful solvents (such as dichloromethane) and recover monomer raw materials. This leads to a decline in the performance of the recycled materials, making them difficult to reuse for high-precision 3D printing or craft production. Therefore, this paper proposes a waste recycling equipment and method for highly realistic resin crafts to address the aforementioned problems. Summary of the Invention

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a waste recycling device and method for highly realistic resin crafts, solving the problem that existing technologies cannot effectively recycle realistic resin crafts.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waste recycling device for highly realistic resin crafts, comprising a frame; a melting component for melting the simulated resin crafts; an evaporation component for separating harmful gases from the melted mixed solution; and a condensation component for controlling the condensation and collection of the separated harmful gases. The melting component includes a melting tank and a catalytic tank. A heating module is provided at the bottom of the melting tank, and a catalyst is provided inside the catalytic tank. The catalytic tank is connected to the melting tank through a guide pipe, and a drain pipe is connected to the melting tank. The drain pipe is connected to the evaporation component.

[0008] Preferably, the evaporator includes a drum, an outer sleeve is provided around the drum, a heating chamber is provided between the outer sleeve and the drum, a heat source is provided in the heating chamber, a ring is rotatably connected to the drum, one end of the drain pipe passes through the ring and communicates with the drum, a fixing plate is rotatably connected to the side of the drum, the fixing plate is connected to the outer sleeve, a connecting pipe is connected to the ring and the connecting pipe is connected to the condenser, and a discharge pipe is provided on the fixing plate and communicates with the drum.

[0009] Preferably, a servo motor is installed inside the frame, the output end of the servo motor is connected to a reciprocating lead screw, the end face of the reciprocating lead screw is connected to a connecting shaft, and the connecting shaft passes through the outer sleeve and connects to the roller.

[0010] Preferably, the roller is provided with a plurality of flat plates arranged in an array, and the flat plates are provided with a plurality of flow grooves inside the roller. The flat plates are provided with a communicating cavity, which is connected to the heating cavity.

[0011] Preferably, the condenser includes an air box, a flow guide sleeve connected to the bottom of the air box, a condenser pipe connected to the flow guide sleeve, the connecting pipe being connected to the air box, a condensation chamber provided on the air box, and an inlet pipe and an outlet pipe connected to the condensation chamber.

[0012] Preferably, the air box has a conical structure, and the interior of the air box is arranged with multiple ribs, and the water inlet pipe is equipped with a pump.

[0013] Preferably, the pump component includes a piston sleeve, the water inlet pipe is connected to the piston sleeve, the left end of the piston sleeve is connected to a cold water pipe, a piston is provided inside the piston sleeve, the piston is connected to a circulation frame through a connecting rod, a ring is provided on the circulation frame, a sliding pin is provided on the ring, and the sliding pin is slidably connected in the spiral groove on the surface of the reciprocating lead screw.

[0014] Beneficial effects

[0015] Compared with the prior art, the present invention provides a waste recycling device and method for highly realistic resin crafts, which has the following beneficial effects:

[0016] 1. This waste recycling equipment and method for highly realistic resin crafts utilizes a roller and flat plate structure in the evaporation unit. During heating and rotation, the solution forms a uniform liquid film, significantly increasing the evaporation area and promoting the efficient evaporation and separation of harmful solvents such as dichloromethane. This reduces residual impurities and improves the purity of the recovered monomers. Furthermore, the flat plate with a flow channel is connected to the heating chamber, ensuring uniform heat radiation during rotation. This continuous liquid agitation prevents localized overheating that could lead to resin carbonization or side reactions, guaranteeing the quality of the recycled material. The equipment integrates melting, evaporation, condensation, and recycling modules, and, in conjunction with a servo motor-driven reciprocating screw and circulation frame, achieves automatic feeding, rotary evaporation, and cooling water circulation pump operation, reducing manual intervention and improving processing efficiency.

[0017] 2. The waste recycling equipment and method for this high-simulation resin craft uses a conical gas box in conjunction with a circulating cooling water system to quickly condense and recover the evaporated dichloromethane gas, avoiding direct emission of harmful gases, reducing the risk of environmental pollution, and realizing the recycling of solvents. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a waste recycling device for highly realistic resin crafts proposed in this invention.

[0019] Figure 2 This is a schematic cross-sectional view of the waste recycling equipment for highly realistic resin crafts proposed in this invention.

[0020] Figure 3 This is a schematic diagram of the melting component structure of a waste recycling device for highly realistic resin crafts proposed in this invention.

[0021] Figure 4 This is a schematic diagram of the evaporation component structure of a waste recycling device for highly realistic resin crafts proposed in this invention.

[0022] Figure 5 This is a schematic diagram showing the connection between the evaporator and the servo motor of a waste recycling device for highly realistic resin crafts proposed in this invention.

[0023] Figure 6 This is a schematic diagram of the condenser structure of a waste recycling device for highly realistic resin crafts proposed in this invention.

[0024] Figure 7 This is a schematic diagram of the drum structure of a waste recycling device for highly realistic resin crafts proposed in this invention.

[0025] In the diagram: 1. Frame; 2. Melting component; 21. Melting tank; 22. Guide pipe; 23. Drain pipe; 3. Evaporator; 31. Drum; 32. Fixing plate; 33. Flat plate; 34. Discharge pipe; 35. Connecting pipe; 36. Reciprocating screw; 37. Connecting shaft; 38. Outer sleeve; 39. Ring sleeve; 40. Servo motor; 4. Condenser; 41. Gas box; 42. Water inlet pipe; 43. Water outlet pipe; 44. Rib; 45. Condenser pipe; 46. Guide sleeve; 47. Cold water pipe; 48. Piston sleeve; 49. Circulation frame. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figures 1-7 A waste recycling device for highly realistic resin crafts includes a frame 1; a melting component 2 for melting the simulated resin crafts; an evaporation component 3 for separating harmful gases from the melted mixture; and a condensation component 4 for controlling the condensation and collection of the separated harmful gases.

[0029] In this embodiment, the melting component 2 includes a melting tank 21 and a catalytic tank. A heating module is installed at the bottom of the melting tank 21, and a catalyst is installed inside the catalytic tank. The catalytic tank is connected to the melting tank 21 via a guide pipe 22. A drain pipe 23 is connected to the melting tank 21 and is connected to the evaporator 3. The catalyst solution is pre-stored or prepared online inside the catalytic tank. The catalyst is preferably a mixed solution with dichloromethane as the main solvent and p-toluenesulfonic acid added, used to decompose the cross-linked structure of the resin and promote the rapid dissolution of resin waste under heating conditions. To facilitate control of the reaction process, manual or automatic valves can be installed on both the guide pipe 22 and the drain pipe 23, and temperature sensors and liquid level sensors can be optionally installed to monitor the temperature and liquid level changes inside the melting tank 21 in real time.

[0030] Furthermore, the evaporator 3 includes a drum 31, with an outer sleeve 38 surrounding the drum 31. A heating chamber is formed between the outer sleeve 38 and the drum 31, and a heat source is installed inside the heating chamber. A ring 39 is rotatably connected to the drum 31, and one end of a drain pipe 23 passes through the ring 39 and communicates with the drum 31. A fixing plate 32 is rotatably connected to the side of the drum 31 and is connected to the outer sleeve 38. A connecting pipe 35 is connected to the ring 39 and is connected to the condenser 4. A discharge pipe 34 is installed on the fixing plate 32 and communicates with the drum 31. The outer sleeve 38 is coaxially arranged around the drum 31, forming a closed heating chamber between the outer sleeve 38 and the drum 31. A heat source, such as an electric heating wire, heating rod, or hot air circulation device, is arranged inside the heating chamber to uniformly heat the outer wall of the drum 31, thereby indirectly heating the mixed solution inside. One end of the drum 31 is rotatably connected to a ring 39, which is fixedly mounted on the frame 1 or the outer sleeve 38 and rotates relative to the drum 31 through a sealed bearing. The end of the guide pipe 23 passes through the ring 39 and extends into the inside of the drum 31, used to continuously or intermittently introduce the processed mixed solution from the melting tank 21 into the inner cavity of the drum 31. A connecting pipe 35 is also connected to the ring 39, one end of which is connected to the gas phase region inside the drum 31, and the other end is connected to the condenser 4, used to guide the high-temperature harmful gases separated by evaporation to the condenser 4 for cooling and recovery.

[0031] Furthermore, a servo motor 40 is installed inside the frame 1. The output end of the servo motor 40 is connected to a reciprocating lead screw 36, and the end face of the reciprocating lead screw 36 is connected to a connecting shaft 37. The connecting shaft 37 passes through the outer sleeve 38 and connects to the drum 31. When the servo motor 40 is started, its output shaft drives the reciprocating lead screw 36 to rotate. The reciprocating lead screw 36 drives the externally installed circulation frame 49 and other components to reciprocate through the spiral groove on its surface to drive the pump pressure components. On the other hand, it transmits the rotational power directly to the drum 31 through the connecting shaft 37, so that the drum 31 rotates slowly and continuously inside the outer sleeve 38 at a set speed.

[0032] In addition, multiple flat plates 33 are arrayed on the drum 31. Multiple flow channels are formed inside the drum 33, and a connecting cavity is provided within each flat plate 33, which is connected to the heating chamber. During operation, the heat source heats the heating chamber, and the high-temperature airflow or heat is transferred to the interior of each flat plate 33 through the connecting cavity, causing the flat plate 33 to heat up. As the drum 31 rotates, the mixed solution continuously agitates under centrifugal force and gravity, adhering to the surface of the multiple flat plates 33. Due to the high temperature of the flat plates 33, a uniform and thin liquid film quickly forms on their surface. The flow channels ensure continuous flow of the solution between the flat plates 33, constantly renewing the liquid film surface and preventing localized overheating or excessive thickness. Simultaneously, the connecting cavity inside the flat plate 33 directly introduces heat from the heating chamber, bringing the heating source closer to the liquid film, significantly improving evaporation efficiency and avoiding the uneven heat transfer problem caused by indirect heating from the outer wall of the drum 31. The structural design of connecting the cavity and the heating cavity makes the flat plate 33 an internal heat source radiator. Even if there is a temperature gradient in the overall temperature distribution of the roller 31, the flat plate 33 can still maintain a high and uniform temperature, which is conducive to the rapid escape of harmful gases such as dichloromethane from the solution.

[0033] In addition, the condenser includes a gas box 41, with a guide sleeve 46 connected to the bottom of the gas box 41. A condenser pipe 45 is connected to the guide sleeve 46, and a connecting pipe 35 is connected to the gas box 41. A condensation chamber is provided on the gas box 41, and an inlet pipe 42 and an outlet pipe 43 are connected to the condensation chamber. The gas box 41 has a conical structure, and multiple ribs 44 are arranged in an array inside the gas box 41. A pump is provided on the inlet pipe 42. The condensation chamber is provided on the gas box 41, and the inlet pipe 42 and the outlet pipe 43 are connected to the inner or outer wall of the condensation chamber to form a cooling water circulation loop. Cooling water enters the cooling jacket or cooling channel of the condensation chamber from the inlet pipe 42, absorbs the heat of the gas inside the gas box 41, and is discharged from the outlet pipe 43, keeping the inner wall of the gas box 41 at a low temperature and promoting the rapid condensation of the high-temperature gas. The gas box 41 has an overall conical structure, such as a frustum or pyramid, with a hollow interior forming the condensation chamber. The conical structure facilitates the downward convergence of condensed droplets along the wall under gravity, reducing droplet residue and improving recovery efficiency. The ribs 44 significantly increase the contact area between the gas and the cold wall, enhancing heat exchange efficiency. The ribs 44 also serve as a condensate drainage path, allowing condensed droplets to slide more quickly into the bottom guide sleeve 46, preventing secondary evaporation.

[0034] It is worth noting that the pump components include a piston sleeve 48, an inlet pipe 42 connected to the piston sleeve 48, a cold water pipe 47 connected to the left end of the piston sleeve 48, a piston inside the piston sleeve 48, and a circulation frame 49 connected to the piston via a connecting rod. A ring is mounted on the circulation frame 49, and a sliding pin is mounted on the ring. The sliding pin is slidably connected to the spiral groove on the surface of the reciprocating screw 36 and to the circulation frame 49. When the reciprocating screw 36 rotates with the servo motor 40, the spiral groove drives the sliding pin and the circulation frame 49 to reciprocate linearly along the axial direction of the reciprocating screw 36. The circulation frame 49 drives the piston to slide reciprocally inside the piston sleeve 48 via the connecting rod. When the piston moves to the right or outward, a negative pressure is generated inside the piston sleeve 48, drawing cooling water from an external water source through the cold water pipe 47. When the piston moves to the left, the cooling water inside the piston sleeve 48 is pressurized and forced into the condensation chamber of the gas box 41 through the inlet pipe 42. To ensure unidirectional flow of cooling water, one-way valves are installed on both the cold water pipe 47 and the inlet pipe 42 to prevent backflow of cooling water.

[0035] Example 2

[0036] A waste disposal method for highly realistic resin crafts includes the following steps:

[0037] Step S1: Pre-treatment. The simulated resin crafts to be recycled are pre-treated. First, the waste is classified according to material type, and non-recyclable foreign objects such as metal inserts, glass, and paper are removed. Then, the waste is crushed using mechanical crushing to break large pieces of crafts into blocks or irregular particles with a side length of no more than 2-5 cm, in order to increase the contact area with the catalyst solution during the subsequent heating and melting process. Finally, the crushed waste is cleaned and dried to remove dust, oil, and moisture adhering to the surface, in order to ensure the purity and stability of the subsequent chemical reaction.

[0038] Step S2: Prepare the catalyst. The amount of catalyst to be melted is determined based on the weight of the simulated resin crafts to be added. For every kilogram of resin waste, 3-8 liters of dichloromethane are needed, and the amount of p-toluenesulfonic acid added is 0.5%-2.0% of the mass of dichloromethane. During preparation, slowly add the p-toluenesulfonic acid to the dichloromethane and stir at room temperature until completely dissolved to form a homogeneous catalyst solution. The prepared catalyst solution must be sealed and stored to prevent solvent evaporation.

[0039] Step S3: Heating and Melting; The pretreated resin waste is placed into the melting tank 21, and then the catalyst solution prepared in step S2 is quantitatively introduced into the melting tank 21 through the guide pipe 22 until the catalyst solution completely submerges the surface of the waste. The heating module at the bottom of the melting tank 21 is activated, and the temperature is controlled at 70℃-90℃, preferably 80℃, and heated continuously for 4-6 hours, preferably 4-5 hours. During the heating process, the melting tank 21 can be stirred or shaken appropriately to ensure sufficient contact between the catalyst and the waste. Observe the changes in the morphology of the waste. When all solid resin has completely dissolved and the solution becomes relatively transparent with no obvious solid particles, the melting is complete.

[0040] Step S4: Separation and purification. After cooling the melted reaction mixture, impurities are separated by rotation. After cooling, the valve on the inlet pipe 23 is opened to introduce the mixed solution into the drum 31 of the evaporator 3. The servo motor 40 is started to drive the drum 31 to rotate slowly at a speed preferably 10-60 rpm. At the same time, the heat source in the heating chamber is started to maintain the internal temperature of the drum 31 at 50℃-80℃. During this process, harmful solvents such as dichloromethane evaporate upon heating and are recovered into the condenser 4 through the connecting pipe 35. The flat plates 33 inside the drum 31 form a uniform liquid film, promoting rapid solvent overflow. The evaporation process continues until no obvious gas is produced. What remains in the drum 31 is the preliminarily purified resin monomer mixture. Then, the discharge pipe 34 is opened to discharge the mixture, which can be further filtered to remove trace amounts of insoluble impurities.

[0041] Step S5: Reprocessing and reuse. The mixed solution separated in Step S4 is recycled. A small amount of fresh monomer is added according to the original formula ratio. After mixing evenly and degassing, it is poured back into the 3D printer to reprint new crafts. The mixed solution separated and purified in Step S4 is recycled, and its effective component content and residual solvent ratio are analyzed. A small amount of fresh monomer is added according to the original formula, i.e., the monomer formula used to prepare the simulated resin craft. The addition ratio is usually 5%-20% of the total amount of recycled liquid, depending on the purity of the recycled liquid, to compensate for the loss of low molecular weight components or adjust the viscosity during the recycling process. After adding, it is thoroughly stirred and mixed evenly, and then degassed. Vacuum degassing or static degassing can be used to remove tiny air bubbles in the mixture. After processing, the mixture is poured into the material tank of the 3D printer and printed according to the conventional process parameters to recreate new simulated resin crafts, thereby achieving high-value closed-loop recycling of waste materials.

[0042] The working principle is as follows: First, the recycled simulated resin crafts are put into the melting tank 21. Then, the catalyst solution is prepared. The catalyst with dichloromethane as the main solvent is prepared according to the weight and volume of the crafts. P-toluenesulfonic acid is added. The catalyst solution is introduced into the melting tank 21 through the guide pipe 22 until the crafts are submerged. Then, the melting tank 21 is heated and the temperature is controlled at 80°C. The heating is continued for 4 to 5 hours. When all the solid resin is completely dissolved and the solution becomes a relatively transparent liquid, the melting is complete. After cooling to room temperature, the valve of the inlet pipe 23 is opened to introduce the solution into the drum 31. Then, the servo motor 40 is turned on. The servo motor 40 will first drive the connecting shaft 37 to rotate via the reciprocating screw 36. The connecting shaft 37 will drive the drum 31 to rotate slowly. The heat source between the outer sleeve 38 and the drum 31 is energized to generate a high-temperature environment. The heat source airflow will gradually penetrate and radiate into the interior of the drum 31 through the slots of multiple flat plates 33. At this time, when the drum 31 rotates, the flat plates 33 will also rotate, so the solution will adhere to the surface of the multiple flat plates 33, forming a uniform liquid film on its surface, which greatly increases the evaporation area of ​​the liquid. The rotation makes the liquid constantly tumble, avoiding local overheating. The purpose of this process is mainly to remove the dichloromethane solvent in the solution and evaporate and separate the dichloromethane solvent. At this time, the inside of the drum 31 is basically a mixture of monomeric foreign matter that can be continuously reused and recycled. The high-temperature evaporated gas enters the gas box 41 through the connecting pipe 35. The gas box 41 is a relatively low-temperature environment because cooling water is injected from the inlet pipe 42 and discharged from the outlet pipe 43, achieving a low-temperature cooling water circulation. Therefore, the evaporated dichloromethane gas condenses in this low-temperature environment, falling from the conical surface as condensate beads into the guide sleeve 46, and then flowing out from the condenser pipe 45 for collection. Under the rotation of the reciprocating screw 36, the circulation frame 49 moves left and right. The circulation frame 49 drives the piston to slide left and right inside the piston sleeve 48 through the connecting rod, generating a moving negative pressure suction force. The negative pressure suction force acts on the cold water pipe 47, drawing water from the external water source. When the piston moves to the left, it forces the drawn-out cooling water from the inlet pipe 42 into the gas box 41. Of course, both the cold water pipe 47 and the inlet pipe 42 are equipped with one-way valves. After a period of high-temperature evaporation, when the dichloromethane no longer condenses into beads, it means that the mixed solution has been basically separated. Then, the discharge pipe 34 is opened and the material is injected into the material tank inside the 3D printer for reprinting of new products, thus forming a complete recycling system.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A waste recycling device for highly realistic resin crafts, characterized in that, include: Rack (1); Melting part (2) is used to melt the simulated resin crafts. Evaporation element (3) is used to separate harmful gases from the melted mixed solution; Condensing element (4) controls the collection of condensate after the separation of harmful gases; The melting component (2) includes a melting box (21) and a catalyst box. A heating module is provided at the bottom of the melting box (21). A catalyst is provided inside the catalyst box. The catalyst box is connected to the melting box (21) through a guide pipe (22). A drain pipe (23) is connected to the melting box (21). The drain pipe (23) is connected to the evaporator (3).

2. The waste recycling equipment for high-simulation resin crafts according to claim 1, characterized in that: The evaporator (3) includes a drum (31), an outer sleeve (38) is provided around the drum (31), a heating chamber is provided between the outer sleeve (38) and the drum (31), a heat source is provided in the heating chamber, a ring sleeve (39) is rotatably connected to the drum (31), one end of the drain pipe (23) passes through the ring sleeve (39) and communicates with the drum (31), a fixing plate (32) is rotatably connected to the side of the drum (31), the fixing plate (32) is connected to the outer sleeve (38), a connecting pipe (35) is connected to the ring sleeve (39), the connecting pipe (35) is connected to the condenser (4), a discharge pipe (34) is provided on the fixing plate (32), and the discharge pipe (34) is connected to the drum (31).

3. The waste recycling equipment for high-simulation resin crafts according to claim 2, characterized in that: The frame (1) is equipped with a servo motor (40), the output end of which is connected to a reciprocating lead screw (36), and the end face of the reciprocating lead screw (36) is connected to a connecting shaft (37). The connecting shaft (37) passes through the outer sleeve (38) and is connected to the roller (31).

4. The waste recycling equipment for high-simulation resin crafts according to claim 3, characterized in that: Multiple flat plates (33) are arranged in an array on the roller (31). Multiple flow grooves are opened on the flat plates (33) inside the roller (31). A connecting cavity is provided inside the flat plate (33) and the connecting cavity is connected to the heating cavity.

5. The waste recycling equipment for high-simulation resin crafts according to claim 2, characterized in that: The condenser includes an air box (41), the bottom of which is connected to a flow guide sleeve (46), and a condenser pipe (45) is connected to the flow guide sleeve (46). The connecting pipe (35) is connected to the air box (41), and a condenser chamber is provided on the air box (41). A water inlet pipe (42) and a water outlet pipe (43) are connected to the condenser chamber.

6. The waste recycling equipment for high-simulation resin crafts according to claim 5, characterized in that: The air box (41) has a conical structure, and multiple ribs (44) are arranged in an array inside the air box (41). A pump is provided on the water inlet pipe (42).

7. The waste recycling equipment for high-simulation resin crafts according to claim 6, characterized in that: The pump component includes a piston sleeve (48), the water inlet pipe (42) is connected to the piston sleeve (48), the left end of the piston sleeve (48) is connected to a cold water pipe (47), a piston is provided inside the piston sleeve (48), the piston is connected to a circulation frame (49) through a connecting rod, a ring is provided on the circulation frame (49), a sliding pin is provided on the ring, and the sliding pin is slidably connected in the spiral groove on the surface of the reciprocating screw (36) on the circulation frame (49).

8. A waste disposal method for highly realistic resin handicrafts, characterized in that, The waste recycling equipment, which is applied to a high-simulation resin craft as described in any one of claims 1-7, further includes the following steps; Step S1: Pre-treatment, pre-treatment of the simulated resin crafts that need to be recycled; Step S2: Prepare the catalyst by mixing the catalyst according to the weight of the simulated resin crafts being added. Step S3: Heat and melt; Step S4: Separation and purification. After cooling the reaction-melted mixture, impurities are separated by rotation. Step S5: Re-preparation and reuse. The mixed solution separated in step S4 is recycled, a small amount of fresh monomer is added according to the original formula ratio, mixed evenly and degassed, and then poured into the 3D printer to reprint new crafts.

9. A method for recycling waste materials from highly realistic resin crafts according to claim 8, characterized in that: The catalyst uses dichloromethane as the main solvent and adds p-toluenesulfonic acid, and the catalyst solution needs to be immersed in the surface of the workpiece to be recycled.

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