Device for manufacturing 3D printing materials and 3D printer including the same

Abstract

An apparatus for manufacturing 3D printing materials based on strip-shaped raw materials and a 3D printer. In an apparatus for manufacturing 3D printing materials based on strip-shaped raw materials, it includes: a coating assembly for coating an additive on the strip-shaped raw materials; a crease roller assembly for applying pressure to the surface of the strip-shaped raw materials coated with the additive to form a plurality of wrinkles on the surface of the strip-shaped raw materials; and a pair of rolling rollers for rolling the strip-shaped raw materials with a plurality of wrinkles formed thereon so that the strip-shaped raw materials are folded along the plurality of wrinkles, thereby obtaining 3D printing materials.

Description

Technical Field

[0001] The present disclosure relates to the field of 3D printing technology, and particularly to an apparatus for manufacturing 3D printing materials based on strip-shaped raw materials and a 3D printer including the apparatus. Background Art

[0002] A 3D printer, also known as a three-dimensional printer or a stereoscopic printer, is a rapid prototyping process device, usually implemented by digitally printing materials. 3D printers are often used in the fields of mold manufacturing, industrial design, etc. to manufacture models or components. In recent years, 3D printing technology has high application prospects in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, and other fields. Summary of the Invention

[0003] The present disclosure provides an apparatus for manufacturing 3D printing materials based on strip-shaped raw materials and a 3D printer including the apparatus.

[0004] According to one aspect of the present disclosure, there is provided an apparatus for manufacturing 3D printing materials based on strip-shaped raw materials, wherein the strip-shaped raw materials are driven to move along a preset path, and the preset path includes a first section, a second section, and a third section arranged in sequence along the movement direction of the strip-shaped raw materials. The apparatus includes: a coating assembly disposed in the first section for coating an additive on the strip-shaped raw materials; a crease roller assembly disposed in the second section for applying pressure to the surface of the strip-shaped raw materials coated with the additive to form a plurality of wrinkles extending along the movement direction of the strip-shaped raw materials on the surface of the strip-shaped raw materials; and a pair of rolling rollers disposed in the third section for rolling the strip-shaped raw materials formed with a plurality of wrinkles so that the strip-shaped raw materials are folded along the plurality of wrinkles, thereby obtaining 3D printing materials.

[0005] According to another aspect of the present disclosure, there is also provided a 3D printer. The 3D printer includes: the above apparatus; a printer nozzle; and an extruder for conveying the 3D printing materials manufactured and output by the apparatus based on strip-shaped raw materials to the printer nozzle to drive the strip-shaped raw materials connected to the 3D printing materials to move along the preset path.

[0006] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. Brief Description of the Drawings

[0007] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in accordance with the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0008] Figure 1 A top - view schematic diagram showing the structure of an apparatus for manufacturing 3D printing materials based on strip - shaped raw materials according to an exemplary embodiment of the present disclosure;

[0009] Figure 2 A side - view schematic diagram showing the structure of an apparatus for manufacturing 3D printing materials based on strip - shaped raw materials according to an exemplary embodiment of the present disclosure;

[0010] Figure 3 A schematic diagram of a scenario showing the morphological changes of strip - shaped raw materials according to an exemplary embodiment of the present disclosure;

[0011] Figure 4 A schematic diagram showing an alternative coating assembly of the coating assembly as shown in Figure 1 and Figure 2 according to an exemplary embodiment of the present disclosure; and

[0012] Figure 5 A block diagram showing the structure of a 3D printer according to an exemplary embodiment of the present disclosure. Detailed Description of the Embodiment

[0013] The following describes exemplary embodiments of the present disclosure in conjunction with the accompanying drawings. Various details of the embodiments of the present disclosure are included to assist understanding, and they should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well - known functions and structures are omitted below.

[0014] In the present disclosure, unless otherwise stated, the use of terms such as "first", "second", etc. to describe various elements does not intend to limit the positional relationship, timing relationship, or importance relationship of these elements. Such terms are only used to distinguish one element from another. In some examples, the first element and the second element may refer to the same example of that element, and in certain cases, based on the context description, they may also refer to different examples.

[0015] In the description of the various examples in this disclosure, the terms used are for the purpose of describing specific examples only and are not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically defined, the element can be one or more. In addition, the term "and / or" used in this disclosure covers any one of the listed items and all possible combinations.

[0016] When a user performs 3D printing, they need to change the properties of the existing plastic wire (such as wire color, surface texture, physical properties, etc.) according to their needs using additives. Currently, two methods are known in the art. The first is to add the additive to the surface of the plastic wire, and the second is to add the additive to the plastic wire in a molten state. However, in the first method, due to the thickness of the plastic wire itself, the additive added to the surface cannot uniformly diffuse inside the plastic wire. In the second method, due to the very low Reynolds number of the plastic wire, the plastic wire in a molten state is very viscous, and in order to allow the additive to uniformly diffuse, an additional device is required to continuously stir.

[0017] In view of this, the embodiments of the present disclosure provide a device for manufacturing 3D printing materials based on strip-shaped raw materials and a 3D printer including the device, which can alleviate, mitigate, or even eliminate the above problems.

[0018] Figure 1 A top view schematic diagram showing the structure of a device 100 for manufacturing 3D printing materials based on strip-shaped raw materials according to an exemplary embodiment of the present disclosure is shown. Figure 2 A side view schematic diagram showing the structure of a device 100 for manufacturing 3D printing materials based on strip-shaped raw materials according to an exemplary embodiment of the present disclosure is shown.

[0019] The following will refer to Figure 1 and Figure 2 to describe in detail the structure of the device 100 for manufacturing 3D printing materials based on strip-shaped raw materials.

[0020] As Figure 1 and Figure 2 shown, in this device, the strip-shaped raw material 101 is driven to move along a preset path, and the preset path includes a first section 106, a second section 107, and a third section 108 arranged in sequence along the movement direction of the strip-shaped raw material 101. The device 100 for manufacturing 3D printing materials based on strip-shaped raw materials includes: a coating assembly 102, a crease roller assembly 103, and a pair of rollers (roller 104 and roller 109).

[0021] The coating assembly 102 is disposed in the first section 106 for coating an additive on the strip-shaped raw material 101. The additive includes pigments or fillers for changing the color and surface quality (such as high-gloss material and matte material) of the strip-shaped raw material 101, and / or modifiers for changing physical properties (such as density, hardness, and modulus of strength, etc.).

[0022] In an embodiment where the additive is a liquid additive, the coating assembly 102 may include at least one nozzle for coating the liquid additive onto the strip-shaped raw material 101.

[0023] As Figure 1 and Figure 2 shown, the coating assembly 102 may include six nozzles ( Figure 2 only one nozzle is shown, and the remaining nozzles are blocked and not shown in Figure 1 and Figure 2 ), where four nozzles are respectively used for spraying yellow pigment, magenta pigment, cyan pigment, and black pigment for changing the color of the strip-shaped raw material 101, one nozzle is used for spraying a liquid additive for changing the surface quality of the strip-shaped raw material 101, and another nozzle is used for spraying a liquid additive for changing the physical properties of the strip-shaped raw material 101. It can be understood that in other embodiments, the coating assembly 102 may include any number of nozzles, and each nozzle is used for spraying a liquid additive for changing the color, surface quality, or physical properties of the strip-shaped raw material 101, which is not limited herein.

[0024] It can be understood that if the additive is an additive in particulate state, the particulate additive can be first dissolved as a solvent to obtain a liquid additive, and then the liquid additive is coated onto the strip-shaped raw material by the nozzles of the coating assembly 102.

[0025] Other embodiments of the coating assembly are possible, and examples thereof will be specifically described in conjunction with Figure 4 subsequent content.

[0026] The crease roller assembly 103 is disposed in the second section 107 for applying pressure to the surface of the strip-shaped raw material 101 coated with the additive to form a plurality of folds 105 extending along the movement direction of the strip-shaped raw material 101 on the surface of the strip-shaped raw material 101.

[0027] As Figure 1 and Figure 2As shown, the creasing roller assembly 103 includes a creasing roller 103-1 and a rotating shaft 103-2. The rotating shaft 103-2 is coaxially and fixedly connected to the output shaft of the motor (not shown). In other embodiments, the rotating shaft 103-2 may be drivingly connected to the output shaft of the motor. The ways of driving connection include but are not limited to direct driving by a back wheel, belt driving, gear driving, worm driving, chain driving, and friction wheel driving, etc., which are not limited herein.

[0028] The creasing roller 103-1 is coaxially connected to the rotating shaft 103-2, and a plurality of circumferential ridges are arranged on the creasing roller 103-1 along the axial direction. Exemplarily, the motor transmits power to the rotating shaft 103-2 through the output shaft, causing the rotating shaft 103-2 to rotate, thereby driving the creasing roller 103-1 to rotate. When the creasing roller 103-1 rotates, the plurality of circumferential ridges distributed along the axial direction apply pressure to the surface of the strip-shaped raw material 101 in contact therewith to form, on the surface of the strip-shaped raw material 101, Figure 1 and Figure 2 a plurality of folds 105 extending along the movement direction of the strip-shaped raw material 101 as shown.

[0029] A pair of rolling rollers, a rolling roller 104 and a rolling roller 109, are arranged in the third section 108 for rolling the strip-shaped raw material 101 formed with a plurality of folds 105, so that the strip-shaped raw material 101 is folded along the plurality of folds 105 to obtain a 3D printing material.

[0030] The rolling roller 104 and the rolling roller 109 are oppositely arranged to sandwich the strip-shaped raw material 101 between the rolling roller 104 and the rolling roller 109. The rolling roller 104 and the rolling roller 109 roll the strip-shaped raw material 101 by the pressure generated during rotation.

[0031] To more intuitively reflect the morphological changes of the strip-shaped raw material 101 in the second section 107 and the third section 108, the following will be specifically described in conjunction with Figure 3 Specifically.

[0032] Figure 3 FIG. shows a schematic diagram of a scene 300 of the morphological change of the strip-shaped raw material 101 according to an exemplary embodiment of the present disclosure. In conjunction with Figure 1 and Figure 2 , in Figure 3 , three morphologies of the strip-shaped raw material 101 are schematically shown, the strip-shaped raw material 101-1 after being coated by the coating assembly 102, the strip-shaped raw material 101-2 after being extruded by the creasing roller assembly 103, and the strip-shaped raw material 101-3 after being rolled by the rolling roller 104 and the rolling roller 109.

[0033] The surface of the strip-shaped raw material 101-1 has additives coated by the coating assembly 102. Due to the small thickness of the strip-shaped raw material 101-1, the additives coated on its surface can uniformly and rapidly diffuse in the strip-shaped raw material 101-1.

[0034] The strip-shaped raw material 101-1 is driven to move along a preset path and passes through the creasing roller assembly 103 provided in the second section 107. The creasing roller assembly 103 applies pressure to the surface of the strip-shaped raw material 101-1 coated with additives, and a plurality of folds 105 extending along the moving direction of the strip-shaped raw material are formed on the surface of the strip-shaped raw material 101-1. In this way, the strip-shaped raw material 101-1 is processed into a strip-shaped raw material 101-2 with a plurality of folds 105 extending along the moving direction of the strip-shaped raw material on its surface.

[0035] The strip-shaped raw material 101-2 is driven to move along a preset path and passes through a pair of rollers, the roller 104 and the roller 109, provided in the third section 108. The roller 104 and the roller 109 roll and crush the strip-shaped raw material 101-2 by the pressure generated by rotation, so that the distance between the plurality of folds 105 on the strip-shaped raw material 101-2 is reduced until the plurality of folds 105 are folded to obtain the strip-shaped raw material 101-3.

[0036] It can be understood that the strip-shaped raw material 101-3 may include a larger number of folds 105, and the distance between the plurality of folds 105 is smaller. Even the plurality of folds 105 can be adhered together, so that the outer contour of the strip-shaped raw material 101-3 is a cylinder, which conforms to the shape of the wire used in the 3D printer, thereby obtaining the 3D printing material.

[0037] In this way, the user can select the additives corresponding to the requirements and process the 3D printing material required according to their own needs. And during the process of processing the required 3D printing material, the additives are uniformly and rapidly diffused on the strip-shaped raw material 101-1. Then, the strip-shaped raw material 101-1 after the additives have been uniformly diffused is processed to obtain the strip-shaped raw material 101-3 with a cylindrical shape, thereby obtaining the 3D printing material that meets the use of the 3D printer, and this 3D printing material meets the user's requirements.

[0038] Figure 4 Shows a schematic diagram of an alternative coating assembly 400 of the coating assembly 102 as shown in Figure 1 and Figure 2 In such an embodiment, the additive can be a powder-state additive. The alternative coating assembly 400 is used to coat the powder-state additive on the strip-shaped raw material 101. As shown in Figure 4As shown, the alternative coating assembly 400 includes: a laser emitter 401, a drum core 402, a charging roller 403, a first roller 404, a second roller 405, and a third roller 406.

[0039] When the alternative coating assembly 400 starts to work, the drum core 402 is configured to rotate in a first direction. In Figure 4 this case, the first direction is counterclockwise. In other embodiments, the first direction can also be clockwise, which is not limited herein.

[0040] The circumferential surface of the charging roller 403 is force-transmittingly connected to the circumferential surface of the drum core 402 (e.g., in contact with each other and transmitted through friction), so that as the drum core 402 rotates, the charging roller 403 covers the circumferential surface area of the drum core 402 with first-polarity charges.

[0041] In one example, the charging roller 403 causes the circumferential surface area of the drum core 402 to carry negative-polarity charges through the principle of corona discharge. In this example, the first-polarity charges are negative-polarity charges, but the present disclosure is not limited thereto.

[0042] The laser emitter 401 is used to irradiate laser pulses onto the circumferential surface area of the rotating drum core 402 to intermittently eliminate the first-polarity charges at the positions on the circumferential surface area irradiated by the laser pulses.

[0043] In the example, the circumferential surface area of the drum core 402 is divided into multiple sub-regions, and then each sub-region is encoded through binary coding. For example, the sub-regions that need to be covered with powder additives subsequently are encoded as 0, and the sub-regions that do not need to be covered with powder additives subsequently are encoded as 1. The laser emitter irradiates laser pulses onto the sub-regions encoded as 1 according to the coding results to eliminate the negative-polarity charges of the sub-regions encoded as 1. The sub-regions encoded as 0 are not irradiated by laser pulses and retain the negative-polarity charges. This is similar to the principle of a laser printer, where the circumferential surface of the drum core is a layer of photoconductor. When irradiated by a laser beam, the sub-regions of the circumferential surface irradiated will become conductive, thereby releasing the negative-polarity charges thereon.

[0044] The circumferential surface of the first roller 404 is force-transmittingly connected to the circumferential surface of the drum core 402, so that the powder additives with second-polarity charges on the first roller 404 are adsorbed to the positions on the circumferential surface area of the drum core that have been irradiated by laser pulses and still carry first-polarity charges.

[0045] Continuing with the previous example, the first roller 404 imparts a positive charge to the powdered additive. A sub-region with a negative charge on the circumferential surface region of the drum core 402 enables the powdered additive with a positive charge to be adsorbed onto the sub-region with a negative charge on the circumferential surface region of the drum core 402. In this example, the second polar charge is a positive charge, but the present disclosure is not limited thereto.

[0046] The second roller 405 is disposed opposite to the drum core 402 for sandwiching the strip-shaped raw material 101 between the second roller 405 and the drum core 402. The second roller 405 is used to apply a first polar charge to the first surface of the strip-shaped raw material 101 to transfer the powdered additive with a second polar charge adsorbed on the drum core 402 to the second surface of the strip-shaped raw material 101 opposite to the first surface.

[0047] Continuing with the previous example, the second roller 405 causes the first surface of the strip-shaped raw material 101 to have a negative charge, and then the powdered additive with a second polar charge adsorbed on the drum core 402 falls off the drum core 402 and is adsorbed at the second surface opposite to the first surface of the strip-shaped raw material 101. In Figure 4 the example, the second surface is closer to the drum core 402 than the first surface.

[0048] The third roller 406 is used to heat and press the powdered additive adsorbed on the second surface of the strip-shaped raw material 101 so that the powdered additive is fixed on the strip-shaped raw material 101.

[0049] Continuing with the previous example, when the strip-shaped raw material 101 covered with the powdered additive passes through the third roller 406, the third roller 406 can heat and melt the powdered additive. For example, a heater is provided inside the third roller 406 or heat-transfer connected to a heater. Then, the third roller 406 applies pressure to press the heated and melted powdered additive into the strip-shaped raw material 101, thereby achieving coating the additive on the strip-shaped raw material 101.

[0050] It can be understood that the device 100 for manufacturing 3D printing materials based on strip-shaped raw materials can be an independent device for manufacturing 3D printing materials adapted for 3D printers. The device 100 for manufacturing 3D printing materials based on strip-shaped raw materials can also be a partial device inside a 3D printer for manufacturing 3D printing materials adapted for 3D printers. Other devices (such as an extruder) of the 3D printer receive the manufactured 3D printing materials and start the 3D printing task.

[0051] When the apparatus 100 for manufacturing 3D printing material based on strip-shaped raw material is a stand-alone apparatus, the apparatus 100 may further include a driving wheel for driving the 3D printing material to move along the extending direction of a preset path, so as to drive the strip-shaped raw material 101 connected to the 3D printing material to move along the preset path. Exemplarily, by driving the 3D printing material to move along the extending direction of the preset path, when the strip-shaped raw material 101 connected to the 3D printing material moves along the preset path, the strip-shaped raw material 101 is always in a taut state, so that the crease roller assembly 103 and a pair of rolling rollers 104 and 109 in contact with the strip-shaped raw material 101 will not idle.

[0052] When the apparatus 100 for manufacturing 3D printing material based on strip-shaped raw material is a part of a 3D printer, Figure 5 FIG. shows a structural block diagram of a 3D printer 500 according to an exemplary embodiment of the present disclosure. As Figure 5 shown, the 3D printer includes: an apparatus 100 for manufacturing 3D printing material based on strip-shaped raw material, a printer nozzle 501, and an extruder 502.

[0053] The apparatus 100 for manufacturing 3D printing material based on strip-shaped raw material has been described in detail above, and thus will not be elaborated herein for the sake of brevity.

[0054] The printer nozzle 501 is used to extrude the 3D printing material in a molten state.

[0055] The extruder 502 is used to convey the 3D printing material manufactured and output by the apparatus 100 based on the strip-shaped raw material 101 to the printer nozzle 501, so as to drive the strip-shaped raw material 101 connected to the 3D printing material to move along the preset path. It can be understood that when the extruder 502 drives the 3D printing material to move, the driving speed set by the extruder 502 may be consistent with the driving speed set by the driving wheel in the apparatus 100 for manufacturing 3D printing material based on strip-shaped raw material, so as to prevent the crease roller assembly 103 and a pair of rolling rollers, i.e., rolling roller 104 and rolling roller 109, from idling.

[0056] In one example, the extruder 502 is integrated with the printer nozzle 501, and the extruder 502 is used to convey the 3D printing material to the printer nozzle 501.

[0057] In another example, the extruder 502 is installed at a position far from the printer nozzle 501, and remotely conveys the 3D printing material to the printer nozzle 501 through a material guiding pipe such as a Teflon pipe.

[0058] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and no limitations are imposed herein.

[0059] It should be understood that in this specification, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship or dimensions based on the orientation or positional relationship or dimensions shown in the drawings. The use of these terms is only for convenience of description and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the scope of protection of this disclosure.

[0060] In this disclosure, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0061] In this disclosure, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can include the first and second features being in direct contact, or can include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the first feature is at a lower horizontal level than the second feature.

[0062] This specification provides many different embodiments or examples that can be used to implement the present disclosure. It should be understood that these different embodiments or examples are entirely exemplary and do not limit the scope of protection of the present disclosure in any way. Based on the disclosure content of the specification of the present disclosure, those skilled in the art can conceive of various changes or substitutions, which should all be covered within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the scope of protection defined by the appended claims.

Claims

1. An apparatus for manufacturing 3D printing materials, characterized in that, The device includes: a coating assembly for coating an additive on a strip-shaped raw material to obtain the coated strip-shaped raw material; a crease roller assembly for applying pressure to the surface of the coated strip-shaped raw material to form a plurality of folds extending along the longitudinal axis direction of the coated strip-shaped raw material; and a pair of rolling rollers for rolling the plurality of folds so that the plurality of folds are folded to obtain the 3D printing material.

2. The device according to claim 1, wherein, The additive is a powdered additive, and the coating assembly includes: a drum core configured on one side of the second surface of the strip-shaped raw material for rotating in a first direction; a charging roller, the circumferential surface of the charging roller is in force transmission connection with the circumferential surface of the drum core, so that as the drum core rotates, the charging roller covers a first-polarity charge on the circumferential surface area of the drum core; a laser emitter for irradiating a laser pulse onto the circumferential surface area of the rotating drum core to intermittently eliminate the first-polarity charge at the position irradiated by the laser pulse in the circumferential surface area; a first roller, the circumferential surface of the first roller is in force transmission connection with the circumferential surface of the drum core, so that the powdered additive with a second-polarity charge on the first roller is adsorbed to the position still carrying the first-polarity charge in the circumferential surface area of the drum core irradiated by the laser pulse; a second roller configured on one side of the first surface of the strip-shaped raw material for clamping the strip-shaped raw material between the second roller and the drum core, and the second roller is used to apply a first-polarity charge to the first surface of the strip-shaped raw material to transfer the powdered additive with a second-polarity charge adsorbed on the drum core to the second surface of the strip-shaped raw material opposite to the first surface; and a third roller for heating and pressing the powdered additive adsorbed on the second surface of the strip-shaped raw material to fix the powdered additive on the strip-shaped raw material.

3. The device according to claim 1, wherein, The additive is a liquid additive, and the coating assembly includes at least one nozzle for coating the liquid additive onto the strip-shaped raw material.

4. The apparatus according to claim 1, wherein The crease roller assembly includes: a rotating shaft, the axial direction of the rotating shaft is perpendicular to the longitudinal axis direction of the coated strip-shaped raw material; and a crease roller, the crease roller is coaxially connected to the rotating shaft, and a plurality of circumferential ridges are arranged on the crease roller along the axial direction of the crease roller, and the plurality of circumferential ridges extend along the longitudinal axis direction.

5. The device according to any one of claims 1-4, further comprising a driving wheel for driving the manufactured 3D printing material to move along the extending direction of a preset path, so as to drive the strip-shaped raw material connected to the 3D printing material to move along the preset path.

6. A 3D printer, comprising: the device according to any one of claims 1-5; a printer nozzle; and an extruder for conveying the 3D printing material output by the device to the printer nozzle to drive the strip-shaped raw material connected to the 3D printing material to move along a preset path.

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