Plastic material recovery device for 3D printing

Abstract

The utility model relates to a plastic material recovery device for 3D printing. According to the technical scheme, the plastic material recovery device is characterized by comprising a lifting mechanism; a rotary clamping mechanism is arranged at the output end of the lifting mechanism; a cutting mechanism is arranged below the base clamping mechanism; a bottle body heating mechanism is arranged on one side of the cutting mechanism; a filament heating mechanism is arranged at the output end of the cutting mechanism; plastic bottle materials are recycled, pollution of the plastic bottles to the environment is reduced, the resource utilization level of waste plastics is improved, the material cost of 3D printing is reduced, the cost and raw material problems of 3D printing consumables are effectively solved, and the consumable source of a 3D printing system is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of material recycling, and more specifically, to a plastic material recycling device for 3D printing. Background Technique

[0002] China is the world's largest producer and consumer of PET. Its current usage shows a continuous growth trend. Among them, PET bottles, as a common type of plastic bottle, are widely used in the packaging industry. However, PET is a non-degradable plastic that takes hundreds of years or even longer to decompose. The accumulation of a large amount of waste PET plastics will cause environmental pollution and ecological damage. At the same time, PET bottles are a recyclable plastic material. Therefore, recycling PET bottles has always been an important topic. Nowadays, 3D printing technology is widely used in various fields. Using renewable materials and recycled materials for printing helps to promote sustainable development and alleviate the problem of material accumulation pollution.

[0003] In order to recycle PET bottles into 3D consumables, it is necessary to shape PET into filaments that are convenient for 3D printing. Although existing plastic bottle recycling devices can finally cut and recycle plastic bottles, the processes of heating the bottle body and cutting both require manual handling, which inevitably involves safety hazards such as scalding and cutting.

[0004] The existing Chinese patent with the patent number CN218699260U discloses a long-strip PET plastic fiber shearing device, which describes that the device provides power for the entire shearing process by adopting a hand-cranked power component. The disadvantage of this device is that the hand-cranked power supply is not fully automated, consumes a large amount of manpower, increases labor costs, and is difficult to meet the actual application requirements. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a plastic material recycling device for 3D printing to solve the above technical problems.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: A plastic material recycling device for 3D printing, comprising: a lifting mechanism; a rotating clamping mechanism is arranged at the output end of the lifting mechanism; a cutting mechanism is arranged below the clamping mechanism; a bottle body heating mechanism is arranged on one side of the cutting mechanism; a filament heating mechanism is arranged at the output end of the cutting mechanism.

[0007] Since the bottom of the bottle body is difficult to recycle, the bottom of the bottle needs to be removed before recycling. First, the lifting mechanism drives the bottle body clamped by the rotating clamping mechanism to move up and down and rotate the bottle body. At this time, the bottle body heating mechanism heats the rotating bottle body, so that the bottle body expands by heating into a state convenient for cutting. Then, the lifting mechanism drives the bottle body clamped by the rotating clamping mechanism to move down and rotate the bottle body. After moving the bottom of the bottle body to the cutting mechanism, stop moving down, and cut off the bottom of the bottle through the cutting mechanism. Subsequently, adjust the cutting direction of the cutting mechanism, start the lifting mechanism to move the bottle body down while rotating, and the bottle body can be cut into filaments by the cutting mechanism. The width of the filaments is related to the angle of the cutting mechanism and the descending rate of the bottle body. After the filaments are formed, the filaments are introduced into the filament heating mechanism, and the filaments are heated by the filament adding mechanism to soften and form a filamentous substrate for 3D printing.

[0008] By heating the plastic bottle to be processed and shearing it into a filamentous plastic structure, and then passing it through a nozzle heated to a preset temperature, the formed 3D printing filament is output, realizing the recycling of the plastic bottle material, reducing the environmental pollution caused by plastic bottles, improving the resource utilization level of waste plastics, reducing the material cost of 3D printing, effectively solving the cost and raw material problems of 3D printing consumables, and expanding the source of consumables for 3D printing systems.

[0009] Specifically, the bottle body heating mechanism usually uses a hot air blower to heat the bottle body by blowing hot air on the bottle body. The filament heating mechanism generally uses a heating nozzle, and a flared opening is provided at the feeding port of the heating nozzle. The filament enters from the wide opening of the flared opening and exits from the narrow opening of the flared opening, so that the filament enters the heating nozzle smoothly.

[0010] Optionally, the lifting mechanism includes: a lifting drive assembly; a connecting plate is provided at the output end of the lifting drive assembly; the rotating clamping mechanism is arranged on the connecting plate; a lifting guide rail is arranged on the lifting drive assembly; a lifting slider is arranged on the connecting plate; the lifting slider is slidably arranged on the lifting guide rail.

[0011] By driving the connecting plate to move up and down through the lifting drive assembly and driving the rotating clamping mechanism on the connecting plate to move up and down, the bottle body clamped by the rotating clamping mechanism can be moved up and down. During the up and down movement of the connecting plate, the lifting slider slides on the lifting guide rail, which can improve the stability of the connecting plate during movement.

[0012] Optionally, the lifting drive assembly includes: a lifting lead screw and a worm gear reducer; a mounting bracket is arranged on the worm gear reducer; the lifting guide rail is arranged on the mounting bracket; the lifting lead screw is arranged inside the worm gear reducer; the lifting lead screw meshes with the worm gear reducer; the connecting plate is arranged at the end of the lifting lead screw.

[0013] When it is necessary to drive the connecting plate to move up and down, an external motor is used to drive the turbine reducer to rotate. Since the lifting lead screw meshes with the turbine reducer, the lifting lead screw moves on the turbine reducer under the action of the turbine reducer, and drives the connecting plate fixed at the end of the lifting lead screw to move up and down.

[0014] Optionally, the rotation clamping mechanism includes: a rotation driving component and a clamping component; the rotation driving component is arranged on the connecting plate; the output end of the rotation driving component is fixed to the clamping component.

[0015] After the connecting plate drives the clamping component to descend to a preset position, the rotation driving component is used to drive the clamping component to rotate, and then drive the bottle body on the clamping component to rotate, so as to complete the heating and cutting of the bottle body.

[0016] Among them, the clamping component can be set according to actual needs, usually a pneumatic gripper, and other devices capable of clamping the mouth of a plastic bottle can be selected, such as: a three-jaw chuck, a pneumatic chuck, etc.

[0017] Optionally, the rotation driving component includes: a first motor and a pulley assembly; the first motor is arranged on the connecting plate; the output end of the first motor is fixed to the input end of the pulley assembly; a bearing seat is arranged on the connecting plate; the clamping component passes through the bearing seat and is fixed to the output end of the pulley assembly.

[0018] The input end of the pulley assembly is driven to rotate by the first motor, so that the clamping component passing through the bearing seat rotates with the output end of the pulley assembly. The first motor can be a servo motor.

[0019] Optionally, the cutting mechanism includes: a translation driving component; an angle adjusting component is arranged at the output end of the translation driving component; a cutting tool head is arranged at the output end of the angle adjusting component.

[0020] When cutting the bottom of the bottle, first adjust the angle of the cutting tool head through the angle adjusting component to adjust the cutting tool head to a horizontal placement state, and then drive the angle adjusting component to translate through the translation driving component, so that the cutting tool head moves towards the bottle body direction and the cutting tool head cuts into the bottom of the bottle body. Since the bottle body keeps rotating under the action of the rotation driving component, the cutting tool head can cut off the bottom of the bottle body. Then adjust the angle of the cutting tool head through the angle adjusting component to make it tilt upwards, and then start the lifting mechanism to move the bottle body downwards. At this time, the bottle body rotates while moving downwards, and the cutting tool head cuts the bottle body to form PET filaments.

[0021] Specifically, the translation drive assembly can be set according to actual needs. Here, a lead screw driven by a motor and a lead screw nut arranged at the bottom of the mounting plate are used to drive the mounting plate to translate. The angle adjustment assembly is arranged on the mounting plate, and a guide rail is arranged on the base. A corresponding slider is arranged at the lower end of the mounting plate to improve the stability of the mounting plate during translation. The translation drive assembly can also use other devices such as cylinders and electric push rods that can drive the mounting plate to translate.

[0022] Optionally, the angle adjustment assembly includes: a connecting rod group and a connecting rod seat; the connecting rod seat is arranged on the translation drive assembly; a first cylinder is arranged on the translation drive assembly; one end of the connecting rod group is rotatably connected to the output end of the first cylinder, and the other end passes through the connecting rod seat and is fixed to the cutting head; the other end of the connecting rod group is rotatably connected to the connecting rod seat.

[0023] One end of the connecting rod assembly is pushed by the first cylinder. Since the other end of the connecting rod assembly is rotatably connected to the connecting rod seat, the other end of the connecting rod assembly rotates under the action of the first cylinder, which can drive the cutting head to rotate.

[0024] Specifically, the connecting rod group includes a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected to the output end of the first cylinder, and the other end is rotatably connected to one end of the second connecting rod; the other end of the second connecting rod passes through the connecting rod seat and is fixed to the cutting head; the other end of the second connecting rod is rotatably connected to the connecting rod seat. When the first cylinder pushes the first connecting rod, the first connecting rod swings downward around its connection with the first cylinder, and the second connecting rod swings upward around its connection with the connecting rod seat under the action of the first connecting rod, so that the cutting head tilts upward.

[0025] The specific structure of the angle adjustment component can adopt other devices that can drive the cutting head to rotate, such as directly adopting a motor drive.

[0026] Optionally, at least one limiting rod for limiting the position of the bottle body is provided on the translation drive assembly.

[0027] When cutting the bottle body, the limiting rod is inside the bottle body and can limit the position of the bottle body. If two or more limiting rods are provided, both the inside and outside of the bottle body can be fixed, further improving the stability of the bottle body when cutting.

[0028] Optionally, it also includes: a base; a straightening roller and a clamping cam are rotatably arranged on the base; one end of the clamping cam is rotatably arranged on the base, and the other end is provided with a clamping spring; the end of the clamping spring facing away from the clamping cam is arranged on the base; after the cutting mechanism cuts the bottle body into wire strips, one side of the wire strip is in contact with the straightening roller, and the other side is in contact with the clamping cam, and the clamping spring pushes the clamping cam to be close to the straightening roller.

[0029] After the bottle body is cut into filaments, the filaments are straightened by straightening rollers and pressing cams, so that the PET filaments are driven linearly into the filament heating mechanism. Among them, there are several grooves on the straightening rollers. When the bottle body rotates, the filaments extend out from between the straightening rollers and the pressing cams along with the rotation of the bottle body, and the pressing cams press the filaments against the straightening rollers. Moreover, the grooves on the straightening rollers are adapted to the arc of the pressing cams, so that the filaments can be fully squeezed, thereby straightening the filaments.

[0030] Optionally, a straightening cylinder is arranged on the translation drive assembly; a straightening rod is arranged at the output end of the straightening cylinder, and the straightening rod is on one side of the filament; a fixed rod is also arranged on the translation drive assembly; the fixed rod is on the other side of the filament.

[0031] After the bottle body is cut into filaments, the filaments pass through between the fixed rod and the straightening rod, and then the straightening cylinder is started to drive the straightening rod to move towards the filament heating mechanism. The filaments are straightened under the action of the straightening rod, so that the filaments are driven linearly.

[0032] In summary, the utility model has the following beneficial effects:

[0033] When cutting the bottom of the bottle body, the bottle body is moved to the position of the cutting tool head through the lifting mechanism, the rotating clamping mechanism clamps the bottle body and drives the bottle body to rotate, the bottle body heating mechanism heats the bottle body, and then the cutting mechanism is aligned with the bottom of the bottle body to cut the bottom of the bottle body. After cutting off the bottom of the bottle body, the lifting mechanism drives the bottle body to move downward while rotating. At this time, the cutting mechanism can cut the bottle body into filaments, and the filaments are conveyed into the filament heating mechanism under the rotation of the bottle body, and the filaments are heated and shaped to obtain a filamentous substrate for 3D printing. It realizes the recycling of plastic bottle materials, reduces the environmental pollution caused by plastic bottles, improves the resource utilization level of waste plastics, reduces the material cost of 3D printing, effectively solves the cost and raw material problems of 3D printing consumables, and expands the source of consumables for 3D printing systems. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of the utility model;

[0035] Figure 2 is the structural schematic diagram of the lifting mechanism in the utility model;

[0036] Figure 3 is the structural schematic diagram of the rotating clamping mechanism in the utility model;

[0037] Figure 4 is the structural schematic diagram of the cutting mechanism in the utility model;

[0038] Figure 5It is a schematic structural diagram highlighting the straightening roller and the pressing cam in the present utility model.

[0039] In the figure: 1. Base; 2. Lifting mechanism; 21. Mounting frame; 22. Lifting drive assembly; 221. Lifting lead screw; 222. Turbine reducer; 23. Connecting plate; 24. Lifting guide rail; 25. Lifting slider; 3. Rotating clamping mechanism; 31. Mounting seat; 321. First motor; 322. Pulley assembly; 323. Bearing seat; 33. Clamping assembly; 4. Cutting mechanism; 41. Mounting plate; 42. Translation drive assembly; 43. Angle adjustment assembly; 431. Link group; 432. Link seat; 433. First cylinder; 44. Cutting tool head; 5. Bottle heating mechanism; 6. Filament heating mechanism; 7. Limit rod; 8. Straightening roller; 9. Pressing cam; 10. Pressing spring; 11. Straightening cylinder; 12. Straightening stop bar; 13. Fixed stop bar; 14. Bottle body. Detailed implementation manners

[0040] To make the objectives, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific implementation manners of the present utility model with reference to the accompanying drawings. Several embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0041] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include one or more of such features.

[0042] The following combines the accompanying drawings and embodiments to describe the present utility model in detail.

[0043] Embodiment 1

[0044] This embodiment provides a plastic material recycling device for 3D printing, as Figures 1-5As shown in the figure, it includes: a base 1; a lifting mechanism 2 is arranged on the base 1; a rotating clamping mechanism 3 is arranged at the output end of the lifting mechanism 2; a cutting mechanism 4 is arranged on the base 1 and below the clamping mechanism; a bottle heating mechanism 5 is arranged on the base 1 and on one side of the cutting mechanism 4; a wire heating mechanism 6 is arranged on the base 1 and at the output end of the cutting mechanism 4.

[0045] Since it is difficult to recycle the bottom of the bottle 14, the bottom of the bottle needs to be removed before recycling. First, the lifting mechanism 2 drives the bottle 14 clamped by the rotating clamping mechanism 3 to move up and down and rotate the bottle 14. At this time, the bottle heating mechanism 5 heats the rotating bottle 14 to make the bottle 14 expand by heating into a state convenient for cutting. Then, the lifting mechanism 2 drives the bottle 14 clamped by the rotating clamping mechanism 3 to move down and rotate the bottle 14. After moving the bottom of the bottle 14 to the cutting mechanism 4, stop moving down, and cut off the bottom of the bottle through the cutting mechanism 4. Subsequently, adjust the cutting direction of the cutting mechanism 4, start the lifting mechanism 2 to make the bottle 14 move down while rotating, and the bottle 14 can be cut into filaments by the cutting mechanism 4. The width of the filaments is related to the angle of the cutting mechanism 4 and the descending rate of the bottle 14. After the filaments are formed, introduce the filaments into the wire heating mechanism 6, and heat the filaments through the wire adding mechanism to soften and form them into a filamentous substrate for 3D printing.

[0046] By heating the plastic bottle to be processed and shearing it into a filamentous plastic structure, and then passing it through a nozzle heated to a preset temperature, the formed 3D printing filament is output, realizing the recycling of the plastic bottle material, reducing the environmental pollution caused by plastic bottles, improving the resource utilization level of waste plastics, reducing the material cost of 3D printing, effectively solving the cost and raw material problems of 3D printing consumables, and expanding the source of consumables for 3D printing systems.

[0047] Specifically, the bottle heating mechanism 5 usually uses a hot air blower to heat the bottle 14 by blowing hot air on the bottle 14. The wire heating mechanism 6 generally uses a heating nozzle, and a flared opening is arranged at the feed inlet of the heating nozzle. The wire enters from the wide opening of the flared opening and exits from the narrow opening of the flared opening, so that the wire enters the heating nozzle smoothly.

[0048] Optionally, as Figure 1 and Figure 2 shown, the lifting mechanism 2 includes: a mounting frame 21; the mounting frame 21 is arranged on the base 1; a lifting drive assembly 22 is arranged on the mounting frame 21; a connecting plate 23 is arranged at the output end of the lifting drive assembly 22; the rotating clamping mechanism 3 is arranged on the connecting plate 23; a lifting guide rail 24 is arranged on the mounting frame 21; a lifting slider 25 is arranged on the connecting plate 23; the lifting slider 25 is slidably arranged on the lifting guide rail 24.

[0049] The lifting and driving assembly 22 drives the connecting plate 23 to move up and down, and drives the rotating clamping mechanism 3 on the connecting plate 23 to move up and down, so that the bottle body 14 clamped by the rotating clamping mechanism 3 can move up and down. During the up and down movement of the connecting plate 23, the lifting slider 25 slides on the lifting guide rail 24, which can improve the stability of the connecting plate 23 during movement.

[0050] Optionally, as Figure 1 and Figure 2 shown, the lifting and driving assembly 22 includes: a lifting lead screw 221 and a worm gear reducer 222; the worm gear reducer 222 is arranged on the mounting frame 21; the lifting lead screw 221 is arranged inside the worm gear reducer 222; the lifting lead screw 221 meshes with the worm gear reducer 222; the connecting plate 23 is arranged at the end of the lifting lead screw 221.

[0051] When it is necessary to drive the connecting plate 23 to move up and down, an external motor is used to drive the worm gear reducer 222 to rotate. Since the lifting lead screw 221 meshes with the worm gear reducer 222, the lifting lead screw 221 moves on the worm gear reducer 222 under the action of the worm gear reducer 222, and drives the connecting plate 23 fixed at the end of the lifting lead screw 221 to move up and down.

[0052] Optionally, as Figure 1 and Figure 3 shown, the rotating clamping mechanism 3 includes: a mounting seat 31; the mounting seat 31 is arranged on the connecting plate 23; a rotating driving assembly is arranged on the mounting seat 31; a clamping assembly 33 is arranged on the mounting seat 31; the output end of the rotating driving assembly is fixed to the clamping assembly 33.

[0053] After the connecting plate 23 drives the clamping assembly 33 to descend to a preset position, the rotating driving assembly is used to drive the clamping assembly 33 to rotate, and then drive the bottle body 14 on the clamping assembly 33 to rotate, so as to complete the heating and cutting of the bottle body 14.

[0054] Among them, the clamping assembly 33 can be set according to actual needs, usually a pneumatic gripper, and other devices capable of clamping the mouth of a plastic bottle can be selected, such as: a three-jaw chuck, a pneumatic chuck, etc.

[0055] Among them, a camera is also arranged at the lower end of the mounting seat 31, which is convenient for identifying the size of the bottle to be recycled and observing the relative position between the bottle and the cutting mechanism 4

[0056] Optionally, the rotation driving assembly includes: a first motor 321 and a pulley assembly 322; the first motor 321 is disposed on the mounting base 31; the output end of the first motor 321 is fixed to the input end of the pulley assembly 322; a bearing block 323 is disposed on the mounting base 31; the clamping assembly 33 passes through the bearing block 323 and is fixed to the output end of the pulley assembly 322.

[0057] The input end of the pulley assembly 322 is rotated by the first motor 321, so that the clamping assembly 33 passing through the bearing block 323 rotates with the output end of the pulley assembly 322. The first motor 321 can be a servo motor.

[0058] Optionally, as Figure 1 and Figure 4 shown, the cutting mechanism 4 includes: a mounting plate 41; a translation driving assembly 42 is disposed on the base 1; the output end of the translation driving assembly 42 is fixed to the mounting plate 41; the mounting plate 41 is slidably connected to the base 1; an angle adjusting assembly 43 is disposed on the mounting plate 41; a cutting tool head 44 is disposed at the output end of the angle adjusting assembly 43.

[0059] When cutting the bottom of the bottle, first, the angle of the cutting tool head 44 is adjusted by the angle adjusting assembly 43 to adjust the cutting tool head 44 to a horizontal placement state, and then the mounting plate 41 is driven to translate by the translation driving assembly 42, so that the cutting tool head 44 moves toward the bottle body 14 and the cutting tool head 44 cuts into the bottom of the bottle body 14. Since the bottle body 14 rotates under the action of the rotation driving assembly, the cutting tool head 44 can cut off the bottom of the bottle body 14. Then, the angle of the cutting tool head 44 is adjusted by the angle adjusting assembly 43 to make it tilt upward, and then the lifting mechanism 2 is started to lower the bottle body 14. At this time, the bottle body 14 rotates while moving downward, and the cutting tool head 44 cuts the bottle body 14 to form PET filaments.

[0060] Specifically, the translation driving assembly 42 can be set according to actual needs. Here, a motor-driven lead screw and a lead screw nut disposed at the bottom of the mounting plate 41 are used to drive the mounting plate 41 to translate, and a guide rail is disposed on the base 1, and corresponding sliders are disposed at the lower end of the mounting plate 41 to improve the stability of the mounting plate 41 during translation. The translation driving assembly 42 can also adopt other devices such as a cylinder and an electric push rod that can drive the mounting plate 41 to translate.

[0061] Optionally, the angle adjustment component 43 includes: a connecting rod group 431 and a connecting rod seat 432; the connecting rod seat 432 is arranged on the mounting plate 41; a first cylinder 433 is arranged on the mounting plate 41; one end of the connecting rod group 431 is rotatably connected to the output end of the first cylinder 433, and the other end passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432.

[0062] By pushing one end of the connecting rod group 431 with the first cylinder 433, since the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432, the other end of the connecting rod group 431 rotates under the action of the first cylinder 433, and can drive the cutting tool head 44 to rotate.

[0063] Specifically, the connecting rod group 431 includes a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected to the output end of the first cylinder 433, and the other end is rotatably connected to one end of the second connecting rod; the other end of the second connecting rod passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the second connecting rod is rotatably connected to the connecting rod seat 432. When the first cylinder 433 pushes the first connecting rod, the first connecting rod swings downward around its connection with the first cylinder 433, and the second connecting rod swings upward around its connection with the connecting rod seat 432 under the action of the first connecting rod, making the tool head tilt upward.

[0064] The specific structure of the angle adjustment component 43 can adopt other devices capable of driving the cutting tool head 44 to rotate, such as directly using a motor to drive.

[0065] In this embodiment, the lifting lead screw 221 is driven by the turbine speed reducer 222 to move downward, and the clamping component 33 is driven by the first motor 321 to rotate, so that the bottle body 14 clamped by the clamping component 33 rotates while moving downward; when cutting the bottom of the bottle body 14, the bottle body 14 is moved to the position of the cutting tool head 44, and the bottle body 14 is heated by the bottle body heating mechanism 5. Subsequently, the cutting tool head 44 is aligned with the bottom of the bottle body 14, the first cylinder 433 is used to push the connecting rod group 431 to rotate, so that the cutting tool head 44 is in a horizontal position, and then the translation driving component 42 is used to push the cutting tool head 44 to move towards the bottle body 14 and cut the bottom of the bottle body 14. After cutting off the bottom of the bottle body 14, the first cylinder 433 is used to push the connecting rod group 431 to rotate, so that the cutting tool head 44 tilts upward, and the bottle body 14 is driven to move downward while rotating. At this time, the cutting tool head 44 can cut the bottle body 14 into filaments, and the filaments are conveyed into the filament heating mechanism 6 under the rotation of the bottle body 14, and the filaments are heated and shaped to obtain a filamentous substrate for 3D printing. It realizes the recycling of plastic bottle materials, reduces the environmental pollution caused by plastic bottles, improves the resource utilization level of waste plastics, reduces the material cost of 3D printing, effectively solves the cost and raw material problems of 3D printing consumables, and expands the consumable sources of the 3D printing system.

[0066] Example Two

[0067] This embodiment provides a plastic material recycling device for 3D printing, as Figures 1-5 shown, including: a base 1; a lifting mechanism 2 is arranged on the base 1; a rotating clamping mechanism 3 is arranged at the output end of the lifting mechanism 2; a cutting mechanism 4 is arranged on the base 1 and below the clamping mechanism; a bottle heating mechanism 5 is arranged on the base 1 and on one side of the cutting mechanism 4; a wire heating mechanism 6 is arranged on the base 1 and at the output end of the cutting mechanism 4.

[0068] Since it is difficult to recycle the bottom of the bottle 14, the bottom of the bottle needs to be removed before recycling. First, the lifting mechanism 2 drives the bottle 14 clamped by the rotating clamping mechanism 3 to move up and down and rotate the bottle 14. At this time, the bottle heating mechanism 5 heats the rotating bottle 14, so that the bottle 14 expands by heating into a state convenient for cutting. Then, the lifting mechanism 2 drives the bottle 14 clamped by the rotating clamping mechanism 3 to move down and rotate the bottle 14. After moving the bottom of the bottle 14 to the cutting mechanism 4, stop moving down, and cut off the bottom of the bottle through the cutting mechanism 4. Subsequently, adjust the cutting direction of the cutting mechanism 4, start the lifting mechanism 2 to make the bottle 14 move down while rotating, and then the bottle 14 can be cut into filaments by the cutting mechanism 4. The width of the filaments is related to the angle of the cutting mechanism 4 and the descending rate of the bottle 14. After the filaments are formed, the filaments are introduced into the wire heating mechanism 6, and the filaments are heated by the wire feeding mechanism to soften and form a filamentous substrate for 3D printing.

[0069] By heating the plastic bottle to be processed and shearing it into a filamentous plastic structure, and then passing it through a nozzle heated to a preset temperature, the formed 3D printing filament is output, realizing the recycling of the plastic bottle material, reducing the environmental pollution caused by plastic bottles, improving the resource utilization level of waste plastics, reducing the material cost of 3D printing, effectively solving the cost and raw material problems of 3D printing consumables, and expanding the source of consumables for 3D printing systems.

[0070] Specifically, the bottle heating mechanism 5 usually adopts a hot air blower to complete the heating of the bottle 14 by blowing hot air on the bottle 14. The wire heating mechanism 6 generally adopts a heating nozzle, and a flared opening is arranged at the feeding port of the heating nozzle. The filaments enter from the wide opening of the flared opening and are output from the narrow opening of the flared opening, so that the filaments enter the heating nozzle smoothly.

[0071] Optionally, as Figure 1 and Figure 2As shown in the figure, the lifting mechanism 2 includes: a mounting frame 21; the mounting frame 21 is arranged on the base 1; a lifting drive assembly 22 is arranged on the mounting frame 21; a connecting plate 23 is arranged at the output end of the lifting drive assembly 22; the rotating clamping mechanism 3 is arranged on the connecting plate 23; a lifting guide rail 24 is arranged on the mounting frame 21; a lifting slider 25 is arranged on the connecting plate 23; the lifting slider 25 is slidably arranged on the lifting guide rail 24.

[0072] By driving the connecting plate 23 to move up and down through the lifting drive assembly 22, and driving the rotating clamping mechanism 3 on the connecting plate 23 to move up and down, the bottle body 14 clamped by the rotating clamping mechanism 3 can be moved up and down. During the up and down movement of the connecting plate 23, the lifting slider 25 slides on the lifting guide rail 24, which can improve the stability of the connecting plate 23 during movement.

[0073] Optionally, as Figure 1 and Figure 2 shown in the figure, the lifting drive assembly 22 includes: a lifting lead screw 221 and a planetary gear reducer 222; the planetary gear reducer 222 is arranged on the mounting frame 21; the lifting lead screw 221 is arranged in the planetary gear reducer 222; the lifting lead screw 221 meshes with the planetary gear reducer 222; the connecting plate 23 is arranged at the end of the lifting lead screw 221.

[0074] When it is necessary to drive the connecting plate 23 to move up and down, an external motor is used to drive the planetary gear reducer 222 to rotate. Since the lifting lead screw 221 meshes with the planetary gear reducer 222, the lifting lead screw 221 moves on the planetary gear reducer 222 under the action of the planetary gear reducer 222, and drives the connecting plate 23 fixed at the end of the lifting lead screw 221 to move up and down.

[0075] Optionally, as Figure 1 and Figure 3 shown in the figure, the rotating clamping mechanism 3 includes: a mounting seat 31; the mounting seat 31 is arranged on the connecting plate 23; a rotating drive assembly is arranged on the mounting seat 31; a clamping assembly 33 is arranged on the mounting seat 31; the output end of the rotating drive assembly is fixed to the clamping assembly 33.

[0076] After the connecting plate 23 drives the clamping assembly 33 to descend to a preset position, the rotating drive assembly is used to drive the clamping assembly 33 to rotate, thereby driving the bottle body 14 on the clamping assembly 33 to rotate, and the heating and cutting of the bottle body 14 can be completed.

[0077] Among them, the clamping assembly 33 can be set according to actual needs, usually a pneumatic gripper, and other devices capable of clamping the mouth of a plastic bottle can be selected, such as: a three-jaw chuck, a pneumatic chuck, etc.

[0078] Among them, a camera is also provided at the lower end of the mounting base 31, which is convenient for identifying the size of the bottle to be recycled and observing the relative position between the bottle and the cutting mechanism 4.

[0079] Optionally, the rotation driving assembly includes: a first motor 321 and a pulley assembly 322; the first motor 321 is arranged on the mounting base 31; the output end of the first motor 321 is fixed to the input end of the pulley assembly 322; a bearing seat 323 is arranged on the mounting base 31; the clamping assembly 33 passes through the bearing seat 323 and is fixed to the output end of the pulley assembly 322.

[0080] The first motor 321 drives the input end of the pulley assembly 322 to rotate, so that the clamping assembly 33 passing through the bearing seat 323 rotates with the output end of the pulley assembly 322. The first motor 321 can be a servo motor.

[0081] Optionally, as Figure 1 and Figure 4 shown, the cutting mechanism 4 includes: a mounting plate 41; a translation driving assembly 42 is arranged on the base 1; the output end of the translation driving assembly 42 is fixed to the mounting plate 41; the mounting plate 41 is slidably connected to the base 1; an angle adjusting assembly 43 is arranged on the mounting plate 41; a cutting tool head 44 is arranged at the output end of the angle adjusting assembly 43.

[0082] When cutting the bottom of the bottle, first adjust the angle of the cutting tool head 44 through the angle adjusting assembly 43 to adjust the cutting tool head 44 to a horizontal placement state, and then drive the mounting plate 41 to translate through the translation driving assembly 42, so that the cutting tool head 44 moves towards the bottle body 14 and the cutting tool head 44 cuts into the bottom of the bottle body 14. Since the bottle body 14 rotates under the action of the rotation driving assembly, the cutting tool head 44 can cut off the bottom of the bottle body 14. Then adjust the angle of the cutting tool head 44 through the angle adjusting assembly 43 to make it tilt upwards, and then start the lifting mechanism 2 to move the bottle body 14 downwards. At this time, the bottle body 14 rotates while moving downwards, and the cutting tool head 44 cuts the bottle body 14 to form PET filaments.

[0083] Specifically, the translation driving assembly 42 can be set according to actual needs. Here, a screw rod driven by a motor and a lead screw nut arranged at the bottom of the mounting plate 41 are used to drive the mounting plate 41 to translate, and a guide rail is arranged on the base 1, and corresponding sliders are arranged at the lower end of the mounting plate 41 to improve the stability of the mounting plate 41 during translation. The translation driving assembly 42 can also adopt other devices such as a cylinder or an electric push rod that can drive the mounting plate 41 to translate.

[0084] Optionally, the angle adjustment assembly 43 includes: a connecting rod group 431 and a connecting rod seat 432; the connecting rod seat 432 is disposed on the mounting plate 41; a first cylinder 433 is disposed on the mounting plate 41; one end of the connecting rod group 431 is rotatably connected to the output end of the first cylinder 433, and the other end passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432.

[0085] By pushing one end of the connecting rod group 431 with the first cylinder 433, since the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432, the other end of the connecting rod group 431 rotates under the action of the first cylinder 433, and can drive the cutting tool head 44 to rotate.

[0086] Specifically, the connecting rod group 431 includes a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected to the output end of the first cylinder 433, and the other end is rotatably connected to one end of the second connecting rod; the other end of the second connecting rod passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the second connecting rod is rotatably connected to the connecting rod seat 432. When the first cylinder 433 pushes the first connecting rod, the first connecting rod swings downward around its connection with the first cylinder 433, and the second connecting rod swings upward around its connection with the connecting rod seat 432 under the action of the first connecting rod, causing the tool head to tilt upward.

[0087] The specific structure of the angle adjustment assembly 43 may adopt other devices capable of driving the cutting tool head 44 to rotate, such as directly using a motor drive.

[0088] Optionally, as Figure 1 and Figure 4 shown, at least one limiting rod 7 for restricting the position of the bottle body 14 is disposed on the mounting plate 41.

[0089] When cutting the bottle body 14, the limiting rod 7 is inside the bottle body 14 and can restrict the position of the bottle body 14. If two or more limiting rods 7 are provided, the inside and outside of the bottle body 14 can be fixed, further improving the stability during cutting of the bottle body 14.

[0090] In this embodiment, two limiting rods 7 are provided and are respectively located on the inner and outer sides of the bottle body 14. A fixing groove for fixing the bottle body 14 is formed between the two limiting rods 7; after the bottom of the bottle body 14 is cut, the bottle body is in the fixing groove, and the position of the bottle body 14 can be restricted, improving the stability during cutting of the bottle body 14.

[0091] In other embodiments, one limiting rod 7 may also be provided and located on the outer side of the bottle body 14. At this time, the limiting rod 7 can restrict the offset of the bottle body 14 in a certain direction.

[0092] In other embodiments, multiple limiting rods 7 can also be provided. For example, multiple limiting rods 7 are all located inside the bottle body 14 and are arranged in a circular array, capable of supporting the inner wall of the bottle body 14 to improve the stability of the bottle body 14 during cutting. Similarly, multiple limiting rods 7 can also be all located outside the bottle body 14 and are arranged in a circular array to limit the outer wall of the bottle body 14, which can also improve the stability of the bottle body 14 during cutting.

[0093] Embodiment III

[0094] This embodiment provides a plastic material recycling device for 3D printing, as Figures 1-5 shown, including: a base 1; a lifting mechanism 2 is provided on the base 1; a rotating clamping mechanism 3 is provided at the output end of the lifting mechanism 2; a cutting mechanism 4 is provided on the base 1 and below the clamping mechanism; a bottle body heating mechanism 5 is provided on the base 1 and on one side of the cutting mechanism 4; a wire heating mechanism 6 is provided on the base 1 and at the output end of the cutting mechanism 4.

[0095] Since it is difficult to recycle the bottom of the bottle body 14, the bottom of the bottle needs to be removed before recycling. First, the lifting mechanism 2 drives the bottle body 14 clamped by the rotating clamping mechanism 3 to move up and down and rotate the bottle body 14. At this time, the bottle body heating mechanism 5 heats the rotating bottle body 14 to make the bottle body 14 expand due to heat into a state convenient for cutting. Then, the lifting mechanism 2 drives the bottle body 14 clamped by the rotating clamping mechanism 3 to move down and rotate the bottle body 14. After moving the bottom of the bottle body 14 to the cutting mechanism 4, stop moving down, and cut off the bottom of the bottle by the cutting mechanism 4. Subsequently, adjust the cutting direction of the cutting mechanism 4, start the lifting mechanism 2 to make the bottle body 14 move down while rotating, and the bottle body 14 can be cut into filaments by the cutting mechanism 4. The width of the filaments is related to the angle of the cutting mechanism 4 and the descending rate of the bottle body 14. After the filaments are formed, introduce the filaments into the wire heating mechanism 6, and heat the filaments through the wire adding mechanism to soften and form them into a filamentous base material for 3D printing.

[0096] By heating the plastic bottle to be processed and shearing it into a filamentous plastic structure, and then passing it through a nozzle heated to a preset temperature, the formed 3D printing filament is output, realizing the recycling of the plastic bottle material, reducing the environmental pollution caused by plastic bottles, improving the resource utilization level of waste plastics, reducing the material cost of 3D printing, effectively solving the cost and raw material problems of 3D printing consumables, and expanding the consumable sources of 3D printing systems.

[0097] Specifically, the bottle body heating mechanism 5 usually adopts a hot air blower to heat the bottle body 14 by blowing hot air onto the bottle body 14. The filament heating mechanism 6 generally adopts a heating nozzle, and a flared opening is provided at the feed inlet of the heating nozzle. The filament enters from the wide opening of the flared opening and exits from the narrow opening of the flared opening, so that the filament enters the heating nozzle smoothly.

[0098] Optionally, as Figure 1 and Figure 2 shown, the lifting mechanism 2 includes: a mounting frame 21; the mounting frame 21 is arranged on the base 1; a lifting drive assembly 22 is arranged on the mounting frame 21; a connecting plate 23 is arranged at the output end of the lifting drive assembly 22; the rotating clamping mechanism 3 is arranged on the connecting plate 23; a lifting guide rail 24 is arranged on the mounting frame 21; a lifting slider 25 is arranged on the connecting plate 23; the lifting slider 25 is slidably arranged on the lifting guide rail 24.

[0099] By driving the connecting plate 23 to move up and down through the lifting drive assembly 22 and driving the rotating clamping mechanism 3 on the connecting plate 23 to move up and down, the bottle body 14 clamped by the rotating clamping mechanism 3 can be moved up and down. During the up and down movement of the connecting plate 23, the lifting slider 25 slides on the lifting guide rail 24, which can improve the stability of the connecting plate 23 during movement.

[0100] Optionally, as Figure 1 and Figure 2 shown, the lifting drive assembly 22 includes: a lifting lead screw 221 and a worm gear reducer 222; the worm gear reducer 222 is arranged on the mounting frame 21; the lifting lead screw 221 is arranged inside the worm gear reducer 222; the lifting lead screw 221 meshes with the worm gear reducer 222; the connecting plate 23 is arranged at the end of the lifting lead screw 221.

[0101] When it is necessary to drive the connecting plate 23 to move up and down, an external motor is used to drive the worm gear reducer 222 to rotate. Since the lifting lead screw 221 meshes with the worm gear reducer 222, the lifting lead screw 221 moves on the worm gear reducer 222 under the action of the worm gear reducer 222 and drives the connecting plate 23 fixed at the end of the lifting lead screw 221 to move up and down.

[0102] Optionally, as Figure 1 and Figure 3 shown, the rotating clamping mechanism 3 includes: a mounting seat 31; the mounting seat 31 is arranged on the connecting plate 23; a rotating drive assembly is arranged on the mounting seat 31; a clamping assembly 33 is arranged on the mounting seat 31; the output end of the rotating drive assembly is fixed to the clamping assembly 33.

[0103] After the connecting plate 23 drives the clamping assembly 33 to descend to the preset position, the clamping assembly 33 is driven to rotate by the rotating drive assembly, and then the bottle body 14 on the clamping assembly 33 is driven to rotate, so that the heating and cutting of the bottle body 14 can be completed.

[0104] Among them, the clamping assembly 33 can be set according to actual needs. Usually, it is a pneumatic gripper, and other devices capable of clamping the mouth of a plastic bottle can be selected, such as: three-jaw chuck, pneumatic chuck, etc.

[0105] Among them, a camera is also provided at the lower end of the mounting seat 31 to facilitate identifying the size of the bottle to be recycled and observing the relative position between the bottle and the cutting mechanism 4.

[0106] Optionally, the rotating drive assembly includes: a first motor 321 and a pulley assembly 322; the first motor 321 is arranged on the mounting seat 31; the output end of the first motor 321 is fixed to the input end of the pulley assembly 322; a bearing seat 323 is arranged on the mounting seat 31; the clamping assembly 33 passes through the bearing seat 323 and is fixed to the output end of the pulley assembly 322.

[0107] The input end of the pulley assembly 322 is driven to rotate by the first motor 321, so that the clamping assembly 33 passing through the bearing seat 323 rotates with the output end of the pulley assembly 322. The first motor 321 can be a servo motor.

[0108] Optionally, as Figure 1 and Figure 4 shown, the cutting mechanism 4 includes: a mounting plate 41; a translation drive assembly 42 is arranged on the base 1; the output end of the translation drive assembly 42 is fixed to the mounting plate 41; the mounting plate 41 is slidably connected to the base 1; an angle adjustment assembly 43 is arranged on the mounting plate 41; a cutting tool head 44 is arranged at the output end of the angle adjustment assembly 43.

[0109] When cutting the bottom of the bottle, first adjust the angle of the cutting tool head 44 through the angle adjustment assembly 43 to adjust the cutting tool head 44 to a horizontal placement state, and then drive the mounting plate 41 to translate through the translation drive assembly 42, so that the cutting tool head 44 moves towards the bottle body 14 and the cutting tool head 44 cuts into the bottom of the bottle body 14. Since the bottle body 14 keeps rotating under the action of the rotating drive assembly, the cutting tool head 44 can cut off the bottom of the bottle body 14. Then adjust the angle of the cutting tool head 44 through the angle adjustment assembly 43 to make it tilt upwards, and then start the lifting mechanism 2 to move the bottle body 14 downwards. At this time, the bottle body 14 rotates while moving downwards, and the cutting tool head 44 cuts the bottle body 14 to form PET filaments.

[0110] Specifically, the translation drive assembly 42 can be set according to actual requirements. Here, a lead screw driven by a motor and a lead screw nut arranged at the bottom of the mounting plate 41 are used to drive the mounting plate 41 to translate. A guide rail is arranged on the base 1, and corresponding sliders are arranged at the lower end of the mounting plate 41 to improve the stability of the mounting plate 41 during translation. The translation drive assembly 42 can also adopt other devices such as a cylinder or an electric push rod that can drive the mounting plate 41 to translate.

[0111] Optionally, the angle adjustment assembly 43 includes: a connecting rod group 431 and a connecting rod seat 432; the connecting rod seat 432 is arranged on the mounting plate 41; a first cylinder 433 is arranged on the mounting plate 41; one end of the connecting rod group 431 is rotatably connected to the output end of the first cylinder 433, and the other end passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432.

[0112] By pushing one end of the connecting rod group 431 with the first cylinder 433, since the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432, the other end of the connecting rod group 431 rotates under the action of the first cylinder 433, and can drive the cutting tool head 44 to rotate.

[0113] Specifically, the connecting rod group 431 includes a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected to the output end of the first cylinder 433, and the other end is rotatably connected to one end of the second connecting rod; the other end of the second connecting rod passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the second connecting rod is rotatably connected to the connecting rod seat 432. When the first cylinder 433 pushes the first connecting rod, the first connecting rod swings downward around its connection with the first cylinder 433, and the second connecting rod swings upward around its connection with the connecting rod seat 432 under the action of the first connecting rod, making the tool head tilt upward.

[0114] The specific structure of the angle adjustment assembly 43 can adopt other devices that can drive the cutting tool head 44 to rotate, such as directly using a motor to drive.

[0115] Optionally, as Figure 1 and Figure 4 shown, at least one limiting rod 7 for restricting the position of the bottle body 14 is arranged on the mounting plate 41.

[0116] When cutting the bottle body 14, the limiting rod 7 is inside the bottle body 14 and can restrict the position of the bottle body 14. If two or more limiting rods 7 are provided, the inside and outside of the bottle body 14 can be fixed, further improving the stability of the bottle body 14 during cutting.

[0117] Optionally, as Figure 1 and Figure 5As shown, it also includes: a straightening roller 8 and a clamping cam 9; the straightening roller 8 is rotatably set on the base 1; one end of the clamping cam 9 is rotatably set on the base 1, and the other end is provided with a clamping spring 10; the end of the clamping spring 10 facing away from the clamping cam 9 is set on the base 1; after the cutting mechanism 4 cuts the bottle body 14 into wire strips, one side of the wire strip is in contact with the straightening roller 8, and the other side is in contact with the clamping cam 9, and the clamping spring 10 pushes the clamping cam 9 to be close to the straightening roller 8.

[0118] After the bottle body 14 is cut into filaments, the filaments are straightened by the straightening roller 8 and the pressing cam 9, so that the PET filaments are transmitted along a straight line into the filament heating mechanism 6. There are a number of grooves on the straightening roller 8. When the bottle body 14 rotates, the filaments extend from between the straightening roller 8 and the pressing cam 9 as the bottle body 14 rotates, and the pressing cam 9 presses the filaments onto the straightening roller 8. The grooves on the straightening roller 8 match the curvature of the pressing cam 9, so the filaments can be fully squeezed, thereby straightening the filaments.

[0119] In this embodiment, the wire strip is placed between the straightening roller 8 and the pressing cam 9 so that the wire strip is straightened by the squeezing action of the straightening roller 8 and the pressing cam 9 during the transmission process, so that the wire strip can enter the wire strip heating mechanism 6 straightly for heating, ensuring that the filamentary substrate output by the wire strip heating mechanism 6 is smoother and more uniform.

[0120] Embodiment 4

[0121] This embodiment provides a plastic material recycling device for 3D printing, such as Figures 1-5 As shown, it includes: a base 1; a lifting mechanism 2 is arranged on the base 1; a rotating clamping mechanism 3 is arranged at the output end of the lifting mechanism 2; a cutting mechanism 4 is arranged on the base 1 and below the clamping mechanism; a bottle heating mechanism 5 is arranged on the base 1 and on one side of the cutting mechanism 4; a wire strip heating mechanism 6 is arranged on the base 1 and at the output end of the cutting mechanism 4.

[0122] Since the bottom of the bottle body 14 is difficult to recycle, the bottom of the bottle needs to be removed before recycling. First, the lifting mechanism 2 drives the bottle body 14 clamped by the rotating clamping mechanism 3 to move up and down and rotates the bottle body 14. At this time, the bottle body heating mechanism 5 heats the rotating bottle body 14, so that the bottle body 14 expands by heating into a state convenient for cutting. Then, the lifting mechanism 2 drives the bottle body 14 clamped by the rotating clamping mechanism 3 to move down and rotates the bottle body 14. After moving the bottom of the bottle body 14 to the cutting mechanism 4, stop moving down, and cut off the bottom of the bottle through the cutting mechanism 4. Subsequently, adjust the cutting direction of the cutting mechanism 4, start the lifting mechanism 2 to make the bottle body 14 move down while rotating, and the bottle body 14 can be cut into filaments by the cutting mechanism 4. The width of the filaments is related to the angle of the cutting mechanism 4 and the descending speed of the bottle body 14. After the filaments are formed, the filaments are introduced into the filament heating mechanism 6, and the filaments are heated by the filament feeding mechanism to soften and form a filamentous substrate for 3D printing.

[0123] By heating the plastic bottle to be processed and shearing it into a filamentous plastic structure, and then passing it through a nozzle heated to a preset temperature, the formed 3D printing filament is output, realizing the recycling of the plastic bottle material, reducing the environmental pollution caused by plastic bottles, improving the resource utilization level of waste plastics, reducing the material cost of 3D printing, effectively solving the cost and raw material problems of 3D printing consumables, and expanding the source of consumables for 3D printing systems.

[0124] Specifically, the bottle body heating mechanism 5 usually uses a hot air blower to heat the bottle body 14 by blowing hot air on the bottle body 14. The filament heating mechanism 6 generally uses a heating nozzle, and a flared opening is provided at the feed inlet of the heating nozzle. The filament enters from the wide opening of the flared opening and exits from the narrow opening of the flared opening, so that the filament enters the heating nozzle smoothly.

[0125] Optionally, as Figure 1 and Figure 2 shown, the lifting mechanism 2 includes: a mounting frame 21; the mounting frame 21 is arranged on the base 1; a lifting drive assembly 22 is arranged on the mounting frame 21; a connecting plate 23 is arranged at the output end of the lifting drive assembly 22; the rotating clamping mechanism 3 is arranged on the connecting plate 23; a lifting guide rail 24 is arranged on the mounting frame 21; a lifting slider 25 is arranged on the connecting plate 23; the lifting slider 25 is slidably arranged on the lifting guide rail 24.

[0126] The lifting drive assembly 22 drives the connecting plate 23 to move up and down, and drives the rotating clamping mechanism 3 on the connecting plate 23 to move up and down, so that the bottle body 14 clamped by the rotating clamping mechanism 3 can move up and down. During the up and down movement of the connecting plate 23, the lifting slider 25 slides on the lifting guide rail 24, which can improve the stability of the connecting plate 23 during movement.

[0127] Optionally, as Figure 1 and Figure 2 shown, the lifting drive assembly 22 includes: a lifting lead screw 221 and a worm gear reducer 222; the worm gear reducer 222 is disposed on the mounting bracket 21; the lifting lead screw 221 is disposed within the worm gear reducer 222; the lifting lead screw 221 meshes with the worm gear reducer 222; the connecting plate 23 is disposed at the end of the lifting lead screw 221.

[0128] When it is necessary to drive the connecting plate 23 to move up and down, an external motor is used to drive the worm gear reducer 222 to rotate. Since the lifting lead screw 221 meshes with the worm gear reducer 222, the lifting lead screw 221 moves on the worm gear reducer 222 under the action of the worm gear reducer 222, and drives the connecting plate 23 fixed at the end of the lifting lead screw 221 to move up and down.

[0129] Optionally, as Figure 1 and Figure 3 shown, the rotary clamping mechanism 3 includes: a mounting base 31; the mounting base 31 is disposed on the connecting plate 23; a rotary drive assembly is disposed on the mounting base 31; a clamping assembly 33 is disposed on the mounting base 31; the output end of the rotary drive assembly is fixed to the clamping assembly 33.

[0130] After the connecting plate 23 drives the clamping assembly 33 to descend to a preset position, the rotary drive assembly is used to drive the clamping assembly 33 to rotate, thereby driving the bottle body 14 on the clamping assembly 33 to rotate, and the heating and cutting of the bottle body 14 can be completed.

[0131] Among them, the clamping assembly 33 can be set according to actual needs, usually a pneumatic gripper, and other devices capable of clamping the mouth of a plastic bottle can be selected, such as: a three-jaw chuck, a pneumatic chuck, etc.

[0132] Among them, a camera is further disposed at the lower end of the mounting base 31 to facilitate identifying the size of the pre-recycled bottle and observing the relative position between the bottle and the cutting mechanism 4

[0133] Optionally, the rotary drive assembly includes: a first motor 321 and a pulley assembly 322; the first motor 321 is disposed on the mounting base 31; the output end of the first motor 321 is fixed to the input end of the pulley assembly 322; a bearing block 323 is disposed on the mounting base 31; the clamping assembly 33 passes through the bearing block 323 and is fixed to the output end of the pulley assembly 322.

[0134] The first motor 321 drives the input end of the pulley assembly 322 to rotate, so that the clamping assembly 33 passing through the bearing block 323 rotates with the output end of the pulley assembly 322. The first motor 321 can be a servo motor.

[0135] Optionally, as Figure 1 and Figure 4 shown, the cutting mechanism 4 includes: a mounting plate 41; a translation driving assembly 42 is arranged on the base 1; the output end of the translation driving assembly 42 is fixed to the mounting plate 41; the mounting plate 41 is slidably connected to the base 1; an angle adjusting assembly 43 is arranged on the mounting plate 41; and a cutting tool head 44 is arranged at the output end of the angle adjusting assembly 43.

[0136] When cutting the bottom of the bottle, first adjust the angle of the cutting tool head 44 through the angle adjusting assembly 43 to adjust the cutting tool head 44 to a horizontal placement state, then drive the mounting plate 41 to translate through the translation driving assembly 42, so that the cutting tool head 44 moves towards the bottle body 14 and the cutting tool head 44 cuts into the bottom of the bottle body 14. Since the bottle body 14 keeps rotating under the action of the rotation driving assembly, the cutting tool head 44 can cut off the bottom of the bottle body 14. Then adjust the angle of the cutting tool head 44 through the angle adjusting assembly 43 to make it tilt upwards, and then start the lifting mechanism 2 to lower the bottle body 14. At this time, the bottle body 14 rotates while descending, and the cutting tool head 44 cuts the bottle body 14 to form PET filaments.

[0137] Specifically, the translation driving assembly 42 can be set according to actual needs. Here, a lead screw driven by a motor and a lead screw nut arranged at the bottom of the mounting plate 41 are used to drive the mounting plate 41 to translate, and a guide rail is arranged on the base 1, and corresponding sliders are arranged at the lower end of the mounting plate 41 to improve the stability of the mounting plate 41 during translation. The translation driving assembly 42 can also adopt other devices such as a cylinder and an electric push rod that can drive the mounting plate 41 to translate.

[0138] Optionally, the angle adjusting assembly 43 includes: a connecting rod group 431 and a connecting rod seat 432; the connecting rod seat 432 is arranged on the mounting plate 41; a first cylinder 433 is arranged on the mounting plate 41; one end of the connecting rod group 431 is rotatably connected to the output end of the first cylinder 433, and the other end passes through the connecting rod seat 432 and is fixed to the cutting tool head 44; the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432.

[0139] By pushing one end of the connecting rod group 431 through the first cylinder 433, since the other end of the connecting rod group 431 is rotatably connected to the connecting rod seat 432, the other end of the connecting rod group 431 rotates under the action of the first cylinder 433 and can drive the cutting tool head 44 to rotate.

[0140] Specifically, the connecting rod group 431 includes a first connecting rod and a second connecting rod; one end of the first connecting rod is rotatably connected to the output end of the first cylinder 433, and the other end is rotatably connected to one end of the second connecting rod; the other end of the second connecting rod passes through the connecting rod seat 432 and is fixed to the cutting head 44; the other end of the second connecting rod is rotatably connected to the connecting rod seat 432. When the first cylinder 433 pushes the first connecting rod, the first connecting rod swings downward around its connection with the first cylinder 433, and the second connecting rod swings upward around its connection with the connecting rod seat 432 under the action of the first connecting rod, so that the cutting head tilts upward.

[0141] The specific structure of the angle adjustment component 43 can adopt other devices that can drive the cutting head 44 to rotate, such as directly adopting a motor drive.

[0142] Optional, such as Figure 1 and Figure 4 As shown, at least one limiting rod 7 for limiting the position of the bottle body 14 is provided on the mounting plate 41 .

[0143] When the bottle body 14 is cut, the limiting rod 7 is inside the bottle body 14, and can limit the position of the bottle body 14. If two or more limiting rods 7 are provided, the inside and outside of the bottle body 14 can be fixed, and the stability of the bottle body 14 when cutting is further improved.

[0144] Optional, such as Figure 1 and Figure 5 As shown, it also includes: a straightening roller 8 and a clamping cam 9; the straightening roller 8 is rotatably set on the base 1; one end of the clamping cam 9 is rotatably set on the base 1, and the other end is provided with a clamping spring 10; the end of the clamping spring 10 facing away from the clamping cam 9 is set on the base 1; after the cutting mechanism 4 cuts the bottle body 14 into wire strips, one side of the wire strip is in contact with the straightening roller 8, and the other side is in contact with the clamping cam 9, and the clamping spring 10 pushes the clamping cam 9 to be close to the straightening roller 8.

[0145] After the bottle body 14 is cut into filaments, the filaments are straightened by the straightening roller 8 and the pressing cam 9, so that the PET filaments are transmitted along a straight line into the filament heating mechanism 6. There are a number of grooves on the straightening roller 8. When the bottle body 14 rotates, the filaments extend from between the straightening roller 8 and the pressing cam 9 as the bottle body 14 rotates, and the pressing cam 9 presses the filaments onto the straightening roller 8. The grooves on the straightening roller 8 match the curvature of the pressing cam 9, so the filaments can be fully squeezed, thereby straightening the filaments.

[0146] Optional, such as Figure 1 and Figure 4As shown in the figure, a straightening cylinder 11 is provided on the mounting plate 41; a straightening lever 12 is provided at the output end of the straightening cylinder 11, and the straightening lever 12 is located on one side of the wire strip; a fixing lever 13 is further provided on the mounting plate 41; the fixing lever 13 is located on the other side of the wire strip.

[0147] After the bottle body 14 is cut into wire strips, the wire strips pass through between the fixing lever 13 and the straightening lever 12, and then the straightening cylinder 11 is started to drive the straightening lever 12 to move towards the wire strip heating mechanism 6. The wire strips are straightened under the action of the straightening lever 12, so that the wire strips are transmitted linearly.

[0148] In this embodiment, through the limiting action of the straightening lever 12 and the fixing lever 13 on the straightening cylinder 11, the bending degree of the wire strips can be restricted before the wire strips enter the straightening rollers 8 and the pressing cams 9, further improving the straightening effect.

[0149] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A plastic material recycling device for 3D printing, characterized in that: include: A lifting mechanism; a rotating clamping mechanism is arranged at the output end of the lifting mechanism; a cutting mechanism is arranged below the clamping mechanism; a bottle heating mechanism is arranged on one side of the cutting mechanism; and a wire heating mechanism is arranged at the output end of the cutting mechanism.

2. A plastic material recycling device for 3D printing according to claim 1, characterized in that: The lifting mechanism comprises: a lifting drive assembly; a connecting plate is arranged at the output end of the lifting drive assembly; the rotating clamping mechanism is arranged on the connecting plate; a lifting guide rail is arranged on the lifting drive assembly; a lifting slider is arranged on the connecting plate; and the lifting slider is slidably arranged on the lifting guide rail.

3. A plastic material recycling device for 3D printing according to claim 2, characterized in that: The lifting drive assembly includes: a lifting screw and a worm reducer; a mounting frame is arranged on the worm reducer; the lifting guide rail is arranged on the mounting frame; the lifting screw is arranged in the worm reducer; the lifting screw is meshed with the worm reducer; and the connecting plate is arranged at the end of the lifting screw.

4. The plastic material recycling device for 3D printing according to claim 2, characterized in that: The rotating clamping mechanism comprises: a rotating driving component and a clamping component; the rotating driving component is arranged on the connecting plate; and the output end of the rotating driving component is fixed to the clamping component.

5. The plastic material recycling device for 3D printing according to claim 4, characterized in that: The rotation drive assembly includes: a first motor and a pulley assembly; the first motor is arranged on the connecting plate; the output end of the first motor is fixed to the input end of the pulley assembly; a bearing seat is arranged on the connecting plate; the clamping assembly passes through the bearing seat and is fixed to the output end of the pulley assembly.

6. The plastic material recycling device for 3D printing according to claim 1, characterized in that: The cutting mechanism comprises: a translation driving component; an angle adjustment component is arranged at the output end of the translation driving component; and a cutting tool head is arranged at the output end of the angle adjustment component.

7. A plastic material recycling device for 3D printing according to claim 6, characterized in that: The angle adjustment assembly includes: a connecting rod group and a connecting rod seat; the connecting rod seat is arranged on the translation drive assembly; a first cylinder is arranged on the translation drive assembly; one end of the connecting rod group is rotatably connected to the output end of the first cylinder, and the other end passes through the connecting rod seat and is fixed to the cutting head; the other end of the connecting rod group is rotatably connected to the connecting rod seat.

8. The plastic material recycling device for 3D printing according to claim 6, characterized in that: At least one limiting rod for limiting the position of the bottle body is arranged on the translation driving assembly.

9. The plastic material recycling device for 3D printing according to claim 6, characterized in that: Also includes: Base; a straightening roller and a clamping cam are rotatably arranged on the base; one end of the clamping cam is rotatably arranged on the base, and a clamping spring is arranged on the other end; the end of the clamping spring facing away from the clamping cam is arranged on the base; after the cutting mechanism cuts the bottle body into wire strips, one side of the wire strip is in contact with the straightening roller, and the other side is in contact with the clamping cam, and the clamping spring pushes the clamping cam to be close to the straightening roller.

10. The plastic material recycling device for 3D printing according to claim 9, characterized in that: A straightening cylinder is arranged on the translation drive assembly; a straightening lever is arranged at the output end of the straightening cylinder, and the straightening lever is located on one side of the wire strip; a fixed lever is also arranged on the translation drive assembly; the fixed lever is located on the other side of the wire strip.

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