A 3D printer with an auxiliary material discharging function and its usage method

Abstract

The present invention discloses a 3D printer with an auxiliary material discharging function and a using method, specifically relating to the technical field of 3D printing. The 3D printer with an auxiliary material discharging function includes a gantry frame, on which a two-axis moving table is installed. The output end of the two-axis moving table is equipped with a print head, and a Y-axis electric slide is installed at the bottom of the gantry frame. The material discharging mechanism of the present invention is composed of multiple heating plates spliced together, which is conducive for the staff to control the opening and closing of multiple heating plates according to the size of the 3D printed product, thereby forming a dynamic heating adjustment within different spatial ranges, avoiding the dilemmas of waste and increasing the subsequent cooling difficulty. Moreover, by adopting the method of completely separating the heating unit from the tray, the cooling efficiency is synchronously improved. By adding a pretreatment mechanism to the tray, the cooperation between the control shaft and the two friction wheels can complete the switching control between the cleaning part and the processing part. With such a design, intermittent cleaning and pretreatment operations can be performed on the tray.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly to a 3D printer with an auxiliary material removal function and a usage method thereof. Background Art

[0002] 3D printing is an additive manufacturing technology based on three-dimensional CAD data. By stacking materials layer by layer to create three-dimensional objects, it takes into account material diversity: it can be compatible with a variety of materials such as engineering plastics, photosensitive resins, metal powders, and ceramic materials, and even achieve composite printing. Through precise digital control, it realizes the precise utilization of materials and the efficient management of energy, reducing the generation of waste by-products.

[0003] 3D printing is usually achieved by using a digital technology material printer and is often used in the fields of mold manufacturing, industrial design, etc. to manufacture models. Among them, during the printing process, a 3D printer usually prints a 3D printed part on a tray. Currently, the bottom of the 3D printed part is usually softened by heating the tray subsequently to remove it from the tray.

[0004] Referring to a 3D printer material removal device disclosed in the patent with the publication number CN117549560B, this material removal device can, during material removal, conduct the heat generated by the heating end of the thermoelectric cooler through the guiding piece on the upper piece seat, and conduct the heat to the tray through the groove guiding piece and the protruding piece to heat the tray, so that the bottom of the 3D printed part is softened, thereby completing the material removal.

[0005] Currently, after a 3D printer finishes printing, the auxiliary material removal action is mostly completed by heating the tray. For example, in the above-mentioned material removal device, the heating and cooling of the tray are completed by flipping the thermoelectric cooler. However, during a single material removal, the handwheel needs to be repeatedly operated to complete the flipping and switching of the thermoelectric cooler, which is time-consuming and laborious, increasing the workload and affecting the printing efficiency. Moreover, the above-mentioned material removal device uses the thermoelectric coolers arranged side by side at intervals, resulting in poor heating in the interval area between adjacent thermoelectric coolers. Similarly, when the thermoelectric cooler cools down subsequently, it is also limited to the area of the protruding piece, with a temperature difference, which is not conducive to the removal of the finished product.

[0006] And currently, the material removal device cannot perform active cleaning and pretreatment operations on the tray. There is a certain amount of residue on the tray after a single material removal, which is likely to interfere with subsequent printing. At the same time, synchronous pretreatment of the tray cannot be carried out. If this continues for a long time, the residual material on the tray accumulates, continuously increasing the difficulty of subsequent material removal. Summary of the Invention

[0007] The purpose of the present invention is to provide a 3D printer with an auxiliary material removal function and a usage method thereof to solve the above technical problems.

[0008] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0009] The present invention is a 3D printer with an auxiliary stripping function, comprising a gantry frame, a two-axis moving platform is installed on the gantry frame, a print head is installed at the output end of the two-axis moving platform, a Y-axis electric slide is installed at the bottom of the gantry frame, and further comprises:

[0010] A fixed seat is arranged at the output end of the Y-axis electric slide, and a stripping chamber is arranged on the fixed seat;

[0011] The tray is installed on the top of the stripping chamber to support the 3D printed products;

[0012] The stripping mechanism is arranged in the stripping chamber for assisting stripping of the 3D printed product on the tray. The stripping mechanism is divided into a heating unit and a cooling unit. The heating unit is arranged in the stripping chamber to complete the heating action at the bottom of the tray, and the cooling unit is arranged in the stripping chamber to complete the cooling action at the bottom of the tray. The heating unit avoids the cooling unit in a staggered manner;

[0013] The pretreatment mechanism is arranged on the tray to complete auxiliary cleaning and pretreatment operations. An extrusion unit is arranged between the pretreatment mechanism and the stripping mechanism. The stripping mechanism triggers the extrusion unit to complete the active feeding operation of the pretreatment mechanism.

[0014] Furthermore, the heating unit comprises:

[0015] The lifting seat is slidably arranged in the middle position of the stripping chamber;

[0016] Two electric push rods are symmetrically arranged on the fixed seat, and the output ends of the two electric push rods are transmission-connected to the bottom of the lifting seat;

[0017] A plurality of No. 1 mounting parts are arranged side by side and at intervals on the lifting seat;

[0018] A plurality of No. 2 mounting members are arranged on the lifting seat and are arranged alternately with the plurality of No. 1 mounting members in sequence;

[0019] Multiple heating plates are arranged on top of multiple No. 1 mounting parts and No. 2 mounting parts. The multiple heating plates are combined into an integral heating platform through the No. 1 mounting parts and No. 2 mounting parts. The No. 2 mounting part is used to control the heating plate on it to produce a height difference with the heating plate on the No. 1 mounting part.

[0020] Further, each second mounting member comprises:

[0021] Two lifting areas are symmetrically arranged on both sides of the inner wall of the stripping chamber. A No. 1 rack is installed on one side of the inner wall of each lifting area, and a No. 2 rack is slidably installed on the other side of the inner wall of each lifting area. The No. 2 rack of each No. 2 mounting piece is connected to the corresponding heating plate;

[0022] The synchronous shaft is arranged on the lifting seat through the bracket and rotated at intervals. The synchronous shaft on each No. 2 mounting part corresponds to the two lifting areas respectively. Travel gears are arranged at both ends of each synchronous shaft, and each travel gear is meshed with the corresponding No. 1 rack and No. 2 rack.

[0023] Furthermore, the cooling unit comprises:

[0024] Two cooling zones are symmetrically opened on both sides of the top of the stripping chamber;

[0025] Two cooling spray chambers are set in two cooling zones to complete the temperature control of the tray;

[0026] Multiple cooling fans are arranged on both sides of the lifting base through brackets to provide auxiliary cooling.

[0027] Further, the extrusion unit comprises:

[0028] An extrusion chamber is disposed on the heating unit;

[0029] The piston member and the sliding seal are arranged in the extrusion chamber, and the top of the piston member is connected with the heating unit to achieve power connection;

[0030] The first pipe is connected and arranged at one side of the bottom of the extrusion chamber, and the second pipe is connected and installed at the other side of the bottom of the extrusion chamber, and the second pipe is connected with the pretreatment mechanism.

[0031] Furthermore, the pre-processing mechanism comprises:

[0032] The electric linear module is arranged on one side of the stripping chamber through a bracket, and a shift seat is installed at the output end of the electric linear module;

[0033] A control shaft is rotatably arranged on the transfer seat and extends above the tray;

[0034] Two friction wheels are symmetrically sleeved on both ends of the control shaft, and both friction wheels are in friction contact with the upper surface of the tray to complete the switching control;

[0035] A cleaning piece, arranged on one side of the control shaft, to clean the surface of the pallet;

[0036] The processing part is arranged on the other side of the control shaft to complete the surface pretreatment of the tray, and the switching control between the cleaning part and the processing part is completed through the cooperation of the two friction wheels and the tray.

[0037] Further, the cleaning member comprises:

[0038] A No. 1 seat is arranged on one side of the control shaft, and two No. 1 rods are symmetrically slidably penetrated on the No. 1 seat, and No. 1 retaining rings are installed on the tops of the two No. 1 rods;

[0039] The mounting base is detachably and fixedly arranged at the bottoms of two first rods, and a scraping plate is detachably mounted at the bottom of the mounting base;

[0040] Two first springs are correspondingly sleeved outside the two first rods.

[0041] Further, the processing member includes:

[0042] The second base is arranged on the other side of the control shaft. Two second rods are symmetrically and slidably penetrated through the second base, and second retaining rings are mounted at the tops of the two second rods;

[0043] The concave base is detachably and fixedly arranged at the bottoms of the two second rods, and a coating roller is rotatably mounted in the concave base;

[0044] Two second springs are correspondingly sleeved outside the two second rods.

[0045] Further, the processing member further includes:

[0046] The collecting chamber is detachably arranged at the inner top of the concave base for feeding the coating roller;

[0047] The receiving pipe is connected and mounted on one side of the collecting chamber.

[0048] The present invention also provides a usage method of a 3D printer with an auxiliary material discharging function. The usage method specifically includes the following steps:

[0049] Step 1: Control the print head to complete 3D printing work on the tray according to a preset, and at the same time control the print head to complete multi-directional movement to complete stable 3D printing processing;

[0050] Step 2: By setting the material discharging mechanism, control the heating unit to contact the lower surface of the tray to complete the heating treatment, which is beneficial to the rapid material discharging of the 3D printed product on the tray;

[0051] Step 3: Through the second mounting member, it is possible to control the heating plate connected thereto to accelerate the descent, forming a height difference with the heating plate of the first mounting member, which is beneficial to the circulation of the subsequent cooling air;

[0052] Step 4: Through the pretreatment mechanism, it is possible to complete the switching control between the cleaning member and the processing member, and perform intermittent cleaning and pretreatment operations on the tray.

[0053] Compared with the prior art, the beneficial effects of the present invention are:

[0054] In the present invention, a material discharging mechanism is provided. Under normal conditions, the heating unit is controlled to contact the lower surface of the tray to complete the heating process, which is beneficial to the rapid discharging of the 3D printing product on the tray. Moreover, the heating unit is composed of a plurality of heating plates spliced together, which is beneficial for the staff to control the opening and closing of the plurality of heating plates according to the size of the 3D printing product, so as to form a dynamic heating adjustment in different spatial ranges, avoid waste and the dilemma of increasing the subsequent cooling difficulty, with flexible operation and avoiding heat waste.

[0055] With the assistance of the second mounting member, the present invention can control the heating plate connected thereto to accelerate the descent, form a height difference with the heating plate of the first mounting member, which is beneficial to the circulation of the subsequent cooling air. And by adopting the method of completely separating the heating unit from the tray, the overall cooling efficiency is improved, the cooling efficiency is synchronously increased, the circulation of the cold air is accelerated, and the heat of the tray can be quickly dissipated.

[0056] In the present invention, a pretreatment mechanism is added to the tray. Through the cooperation of the control shaft and the two friction wheels, the switching control of the cleaning member and the processing member can be completed. When the pretreatment mechanism moves on the tray, the cleaning member contacts the tray to complete the scraping and cleaning, and the processing member separates from the tray to complete the avoidance. On the contrary, when the pretreatment mechanism is reset, the processing member contacts the tray to complete the pretreatment operation, and the cleaning member separates from the tray to complete the avoidance. With such a design, the tray can be intermittently cleaned and pretreated, so that the surface of the tray remains clean, and the pretreatment can be completed, which is beneficial to subsequent discharging use and avoids the problem of a large amount of residual material accumulating on the tray.

[0057] Of course, any product implementing the present invention does not necessarily need to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 is the overall front view of the present invention;

[0059] Figure 2 is the distribution schematic diagram of the tray and the gantry frame of the present invention;

[0060] Figure 3 is the connection schematic diagram of the tray and the material discharging chamber of the present invention;

[0061] Figure 4 is the distribution schematic diagram of the extrusion unit and the material discharging mechanism of the present invention;

[0062] Figure 5 is the separation schematic diagram of the fixed seat and the material discharging chamber of the present invention;

[0063] Figure 6 is the separation schematic diagram of the tray and the material discharging chamber of the present invention;

[0064] Figure 7Schematic diagram of multiple heating plates of the present invention in contact with the tray;

[0065] Figure 8 Schematic diagram of the cooling unit of the present invention;

[0066] Figure 9 Schematic diagram of the structure of the second mounting member of the present invention;

[0067] Figure 10 Schematic diagram of the distribution of multiple second mounting members of the present invention;

[0068] Figure 11 Schematic diagram of the installation of the pretreatment mechanism of the present invention on the tray;

[0069] Figure 12 Schematic diagram of the distribution of the friction wheel and the tray of the present invention;

[0070] Figure 13 Schematic diagram of the pretreatment mechanism of the present invention;

[0071] Figure 14 Schematic diagram of the processing part of the present invention.

[0072] In the figure: 1, gantry frame; 2, print head; 3, fixed seat; 4, stripping chamber; 5, tray; 6, lifting seat; 7, electric push rod; 8, first mounting member; 9, second mounting member; 91, lifting area; 92, first rack; 93, second rack; 94, synchronizing shaft; 95, traveling gear; 10, heating plate; 11, cooling area; 12, cooling spray chamber; 13, cooling fan; 14, extrusion chamber; 15, piston member; 16, first pipe; 17, second pipe; 18, electric linear module; 19, moving seat; 20, control shaft; 21, friction wheel; 22, first seat; 23, first rod; 24, first retaining ring; 25, mounting seat; 26, scraper; 27, first spring; 28, second seat; 29, second rod; 30, second retaining ring; 31, concave seat; 32, coating roller; 33, second spring; 34, collecting chamber; 35, receiving pipe. Detailed implementation manners

[0073] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0074] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0075] Embodiment 1: The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a 3D printer with an auxiliary stripping function includes a gantry frame 1, a two-axis moving platform is installed on the gantry frame 1, a print head 2 is installed at the output end of the two-axis moving platform, the two-axis moving platform is specifically an X-axis electric slide and a Z-axis electric slide, which can control the print head 2 to complete up and down and left and right adjustments, and a Y-axis electric slide is installed at the bottom of the gantry frame 1, and also includes:

[0076] A fixed seat 3 is arranged at the output end of the Y-axis electric slide, and a stripping chamber 4 is arranged on the fixed seat 3. The top and bottom of the stripping chamber 4 are through-designed, and a plurality of ventilation areas are arranged on the fixed seat 3;

[0077] The tray 5 is arranged on the top of the stripping chamber 4 to support the 3D printed product. The tray 5 is made of a heat-conducting material and can receive heat, which is beneficial for stripping.

[0078] The stripping mechanism is arranged in the stripping chamber 4 for assisting stripping of the 3D printed product on the tray 5. The stripping mechanism is divided into a heating unit and a cooling unit. The heating unit is arranged in the stripping chamber 4 to complete the heating action at the bottom of the tray 5. The cooling unit is arranged in the stripping chamber 4 to complete the cooling action at the bottom of the tray 5. The heating unit avoids the cooling unit in a staggered manner.

[0079] The pretreatment mechanism is arranged on the tray 5 to complete auxiliary cleaning and pretreatment operations. An extrusion unit is arranged between the pretreatment mechanism and the stripping mechanism. The stripping mechanism triggers the extrusion unit to complete the active feeding operation of the pretreatment mechanism.

[0080] Among them, the electric push rod 7, the electric linear module 18 and other electrical components are connected to the switch through the wire, and the switch is electrically connected to the controller, and the specific structure of the controller is not limited.

[0081] Embodiment 2: Based on the stripping mechanism provided in Embodiment 1, this embodiment provides a further technical solution for the stripping mechanism.

[0082] like Figure 7 As shown, the heating unit comprises:

[0083] A lifting seat 6 is slidably arranged in the middle position of the stripping chamber 4;

[0084] Two electric push rods 7 are symmetrically arranged on the fixed seat 3, and the output ends of the two electric push rods 7 are both transmission-connected to the bottom of the lifting seat 6;

[0085] A plurality of first mounting members 8 are arranged side by side and spaced apart on the lifting seat 6;

[0086] A plurality of second mounting members 9 are arranged on the lifting seat 6 and are alternately arranged with a plurality of first mounting members 8 in sequence;

[0087] A plurality of heating plates 10 are arranged on the tops of the plurality of first mounting members 8 and second mounting members 9. The heating plates 10 are specifically one of an electric heating plate and a hydrothermal plate. Through the first mounting members 8 and second mounting members 9, the plurality of heating plates 10 are combined into an integral heating platform. By the second mounting members 9, a height difference is controlled between the heating plates 10 thereon and the heating plates 10 on the first mounting members 8. In order to improve the flatness of the splicing of the heating plates 10, a flexible heat conducting sheet can be added to the heating plates 10, so that the heat of the heating plates 10 can be stably transferred to the tray 5 to avoid temperature differences;

[0088] As Figure 9 and Figure 10 shown, each second mounting member 9 includes:

[0089] Two lifting areas 91 are symmetrically and spacedly opened on both sides of the inner wall of the stripping chamber 4. On one side of the inner wall of each lifting area 91, a first rack 92 is installed. On the other side of the inner wall of each lifting area 91, a second rack 93 is slidably installed. The second rack 93 of each second mounting member 9 is connected to the corresponding heating plate 10, and a sliding area cooperating with the second rack 93 is provided in the lifting area 91;

[0090] A synchronous shaft 94 is rotatably arranged on the lifting seat 6 at intervals through a bracket. The synchronous shaft 94 on each second mounting member 9 corresponds to the two lifting areas 91 respectively. At both ends of each synchronous shaft 94, a traveling gear 95 is provided, and each traveling gear 95 meshes with the corresponding first rack 92 and second rack 93;

[0091] It should be noted that when stripping: through the stripping mechanism, under normal conditions, the electric push rod 7 pushes the lifting seat 6 to move upward in the stripping chamber 4. Through the plurality of first mounting members 8 and second mounting members 9, the plurality of heating plates 10 are controlled to be synchronously spliced to the lower surface of the tray 5. By controlling the opening and closing of the heating plates 10, the bottom of the tray 5 can be heated up, causing the bottom of the 3D printing product to soften and facilitating stripping;

[0092] As Figure 8 shown, the temperature reduction unit includes:

[0093] Two temperature reduction areas 11 are symmetrically opened on both sides of the top of the stripping chamber 4;

[0094] Two temperature reduction spray chambers 12 are arranged in the two temperature reduction areas 11 to complete the temperature control of the tray 5. The two temperature reduction spray chambers 12 are both communicated with an external cold source gas through pipelines. The spray nozzles of the two temperature reduction spray chambers 12 are designed to face the inside of the stripping chamber 4, and the spray nozzles of the two temperature reduction spray chambers 12 are arranged facing the bottom of the tray 5, which is beneficial to the rapid temperature reduction of the tray 5;

[0095] Multiple cooling fans 13 are arranged on both sides of the lifting seat 6 through brackets to complete auxiliary cooling. The multiple cooling fans 13 cooperate with the two cooling spray chambers 12 to form a cold air flow channel, which can quickly dissipate the residual heat on the tray 5.

[0096] It should be noted that when cooling the tray 5: by means of the cooling unit, the electric push rod 7 and the lifting seat 6 are controlled to move downward. First, the heating plate 10 on it is controlled by the first mounting member 8 to move downward and separate from the tray 5. When the lifting seat 6 moves downward, it drives the multiple synchronizing shafts 94 to move downward. Since the traveling gears 95 at both ends of the synchronizing shaft 94 are engaged with the first rack 92 and the second rack 93, when the synchronizing shaft 94 moves downward, it first senses the downward movement amount of the lifting seat 6 and drives the synchronizing shaft 94 to move downward. When the synchronizing shaft 94 moves downward, the traveling gears 95 rotate, so that the second rack 93 superimposes a rotation amount of the traveling gear 95 during the downward movement, enabling the second rack 93 and the heating plate 10 on it to accelerate downward, and being able to complete a height dislocation with the heating plate 10 on the first mounting member 8, which is beneficial to subsequent cooling. Then, external cold air is sent into the cooling spray chamber 12 and blown onto the lower surface of the tray 5 to complete cooling. After that, the cold air is discharged through the misaligned heating plates 10. At the same time, the design of the multiple cooling fans 13 accelerates the circulation of the cold air, and can quickly dissipate the heat of the tray 5, which is beneficial to subsequent 3D printing processing. After the cooling is completed, the electric push rod 7 resets, and the heating plates 10 on the first mounting member 8 and the second mounting member 9 are controlled to reset to the lower surface of the tray 5 again to wait for subsequent heating actions.

[0097] As Figure 4 shown, in the embodiment of the present invention, the extrusion unit includes:

[0098] An extrusion chamber 14 is arranged on the heating unit. Specifically, the extrusion chamber 14 is installed on one side of the electric push rod 7 through a bracket. The top of the extrusion chamber 14 is designed to be open. The extrusion chamber 14 is connected to the outside demolding agent through a first pipe 16 to complete continuous feeding. The type of the demolding agent is adapted and adjusted according to the printing material to ensure a good demolding effect.

[0099] A piston member 15 is slidably and sealingly arranged in the extrusion chamber 14, and the top of the piston member 15 is dynamically connected to the heating unit. Specifically, the top of the piston member 15 is detachably and fixedly connected to the bottom of the lifting seat 6.

[0100] A first pipe 16 is connected and arranged on one side of the bottom of the extrusion chamber 14. A first one-way valve for controlling the one-way introduction of the medium into the extrusion chamber 14 is arranged at the end of the first pipe 16. A second pipe 17 is connected and installed on the other side of the bottom of the extrusion chamber 14. A second one-way valve for controlling the one-way discharge of the medium from the extrusion chamber 14 is arranged at the end of the second pipe 17, and the second pipe 17 is connected to the pretreatment mechanism.

[0101] It should be noted that when feeding the pretreatment mechanism: by providing an extrusion unit, when the lifting seat 6 moves downward, the piston member 15 is jointly controlled to move downward in the extrusion chamber 14, and the release agent in the extrusion chamber 14 is sent into the pretreatment mechanism through the second pipe 17. After the subsequent lifting seat 6 is reset, the piston member 15 is controlled to reset, and at the same time, the external release agent is introduced into the extrusion chamber 14 to wait for subsequent feeding. Therefore, the extrusion unit can complete coordinated actions following the lifting seat 6 and can complete continuous feeding operations for the pretreatment mechanism.

[0102] Embodiment 3: Based on the pretreatment mechanism provided in Embodiment 1, this embodiment provides a further technical solution for the pretreatment mechanism.

[0103] As Figure 11 、 Figure 12 and Figure 13 shown, the pretreatment mechanism includes:

[0104] An electric linear module 18 is arranged on one side of the stripping chamber 4 through a bracket. A moving seat 19 is installed at the output end of the electric linear module 18. At the same time, in order to improve stability, an electric linear module 18 and a moving seat 19 can be added on the other side of the stripping chamber 4 as well, and the other end of the control shaft 20 can also be guided to move, ensuring the stability of the switching between the cleaning part and the processing part;

[0105] A control shaft 20 is rotatably passed through the moving seat 19 and extends above the tray 5;

[0106] Two friction wheels 21 are symmetrically sleeved on both ends of the outside of the control shaft 20. Both friction wheels 21 are in frictional contact with the upper surface of the tray 5 to complete switching control. In order to increase the friction force, a friction area adapted to the two friction wheels 21 can be provided on the tray 5;

[0107] A cleaning part is arranged on one side of the control shaft 20 to clean the surface of the tray 5;

[0108] A processing part is arranged on the other side of the control shaft 20 to perform surface pretreatment on the tray 5. The switching control between the cleaning part and the processing part is completed through the cooperation of the two friction wheels 21 and the tray 5. In order to improve the stability of the switching between the cleaning part and the processing part, limit blocks for limiting the extreme moving positions of the cleaning part and the processing part are arranged on both sides of the moving seat 19 to prevent the cleaning part and the processing part from moving excessively and affecting the use;

[0109] In the embodiment of the present invention, the cleaning part includes:

[0110] A first seat 22 is arranged on one side of the control shaft 20. Two first rods 23 are symmetrically and slidably passed through the first seat 22. First retaining rings 24 are installed at the tops of the two first rods 23 to limit the movement of the first rods 23;

[0111] The mounting base 25 is detachably and fixedly arranged at the bottoms of two first rods 23. A scraping plate 26 is detachably mounted at the bottom of the mounting base 25. The scraping plate 26 is specifically made of one of metal and flexible materials, and can adaptively scrape and clean the tray 5;

[0112] Two first springs 27 are correspondingly sleeved outside the two first rods 23. The two first springs 27 are arranged between the first retaining ring 24 and the first seat 22 to control the flexible movement of the scraping plate 26;

[0113] As Figure 14 shown, in the embodiment of the present invention, the processing member includes:

[0114] A second seat 28 is arranged on the other side of the control shaft 20. Two second rods 29 are symmetrically and slidably penetrated through the second seat 28. Second retaining rings 30 are installed at the tops of the two second rods 29 to limit the movement of the second rods 29;

[0115] A concave seat 31 is detachably and fixedly arranged at the bottoms of the two second rods 29. An application roller 32 is rotatably installed in the concave seat 31. An absorption layer is sleeved outside the application roller 32. The medium received is transferred to the surface of the tray 5 through the absorption layer to complete pretreatment;

[0116] Two second springs 33 are correspondingly sleeved outside the two second rods 29. The two second springs 33 are arranged between the second retaining ring 30 and the concave seat 31 to control the flexible movement of the application roller 32;

[0117] The processing member further includes:

[0118] A collecting chamber 34 is detachably arranged at the inner top of the concave seat 31 for feeding the application roller 32. The bottom of the collecting chamber 34 is open. The opening at the bottom of the collecting chamber 34 is in imitation design with the application roller 32. At the same time, a certain gap can be set between the collecting chamber 34 and the application roller 32 according to requirements, so that the release agent can be discharged smoothly. The distance between the two can be freely set according to requirements, so that the collecting chamber 34 can continuously release the medium to the surface of the application roller 32 to complete pretreatment;

[0119] A receiving pipe 35 is connected and installed on one side of the collecting chamber 34, and the receiving pipe 35 is connected to the second pipe 17 through a telescopic pipe to complete medium reception;

[0120] It is worth mentioning that when the pallet 5 is cleaned and pre-treated: a pre-treatment mechanism is provided to send the release agent into the receiving tube 35 through the No. 2 tube 17, and collect it in the collection chamber 34, and then the electric linear module 18 is controlled to move, driving the shift seat 19 and the control shaft 20 to follow the movement. During the forward movement, the friction between the two friction wheels 21 and the pallet 5 is controlled to cause the control shaft 20 to rotate, so that the scraper 26 moves and contacts the pallet 5. Then, driven by the electric linear module 18, the scraper 26 contacts the pallet 5 to complete the scraping and cleaning. At the same time, the design of the No. 1 spring 27 and the No. 1 rod 23 can complete the flexible control of the scraper 26, so that the scraper 26 maintains a stable pressure to contact the pallet 5 to complete the cleaning, thereby improving the cleaning accuracy. At this time, affected by the rotation of the control shaft 20, The processing part is separated from the tray 5 and is not in contact with it. During the subsequent resetting, the friction force sensed by the two friction wheels 21 changes, causing the control shaft 20 to rotate, and the smear roller 32 is linked to contact with the tray 5. The scraper 26 is separated from the tray 5 to avoid it. Subsequently, under the control of the electric linear module 18, the smear roller 32 is rotated, and the release agent collected in the collection chamber 34 can be continuously released to the smear roller 32 to complete the slow release, which is beneficial to the subsequent stripping of the printed product. At the same time, the design of the No. 2 spring 33 and the No. 2 rod 29 can complete the flexible control of the smear roller 32 to maintain a stable smearing effect. By adopting the design of the friction wheel 21, the control shaft 20 can actively complete the switching of the cleaning part and the processing part during the forward and backward movement, thereby realizing the switching operation of different processing methods for the tray 5 and improving the processing efficiency.

[0121] Embodiment 4: A method for using a 3D printer with an auxiliary material stripping function, the method specifically comprising the following steps:

[0122] Step 1: Control the print head 2 to complete the 3D printing work on the tray 5 as scheduled, and at the same time control the print head 2 to complete multi-directional movement to complete stable 3D printing processing;

[0123] Step 2: By setting a stripping mechanism, the heating unit is controlled to contact with the lower surface of the tray 5 to complete the heating process, which is conducive to the rapid stripping of the 3D printed product on the tray 5;

[0124] Step 3: The second mounting member 9 can be used to control the heating plate 10 connected thereto to accelerate its descent, thereby forming a height difference with the heating plate 10 of the first mounting member 8, which is beneficial to the subsequent circulation of cooling air;

[0125] Step 4: The pre-treatment mechanism can complete the switching control between the cleaning part and the treatment part, and complete the intermittent cleaning and pre-treatment operations on the tray 5.

[0126] The present invention provides a 3D printer with an auxiliary material discharging function and a usage method. The specific working principle is as follows: First, control the print head 2 to complete 3D printing work on the tray 5 according to a preset, and at the same time control the print head 2 to complete multi-directional movement, so as to complete stable 3D printing processing. By providing a material discharging mechanism, under normal conditions, control the heating unit to contact the lower surface of the tray 5 to complete the heating treatment, which is beneficial to the rapid material discharging of the 3D printed product on the tray 5. Moreover, the heating unit is composed of a plurality of heating plates 10 spliced together, which is beneficial for the staff to control the opening and closing of the plurality of heating plates 10 according to the size of the 3D printed product, so as to form a dynamic heating adjustment in different spatial ranges, avoiding the dilemma of waste and increasing the subsequent cooling difficulty, with flexible operation, avoiding heat waste and the problem of temperature difference. During subsequent cooling, with the assistance of the second mounting member 9, it is possible to control the heating plate 10 connected thereto to accelerate the descent, and a height difference can be formed with the heating plate 10 of the first mounting member 8, which is beneficial to the circulation of subsequent cooling cold air, and by adopting the method of completely separating the heating unit from the tray 5, the overall cooling efficiency is improved, and the cooling efficiency is synchronously increased;

[0127] By adding a pretreatment mechanism on the tray 5, after a single material discharging is completed, control the pretreatment mechanism to move. Through the cooperation of the control shaft 20 and the two friction wheels 21, the switching control between the cleaning part and the processing part can be completed. When the pretreatment mechanism moves on the tray 5, the cleaning part contacts the tray 5 to complete scraping and cleaning, and the processing part separates from the tray 5 to complete avoidance. On the contrary, when the pretreatment mechanism is reset, the processing part contacts the tray 5 to complete the pretreatment operation, and the cleaning part separates from the tray 5 to complete avoidance. With such a design, intermittent cleaning and pretreatment operations can be performed on the tray 5, keeping the surface of the tray 5 clean, and pretreatment can be completed, which is beneficial for subsequent material discharging use and avoids the problem of a large amount of residual material accumulating on the tray 5.

[0128] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0129] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A 3D printer with an auxiliary material removal function, comprising a gantry frame, on which a two-axis moving table is installed, the output end of the two-axis moving table is equipped with a print head, and a Y-axis electric slide is installed at the bottom of the gantry frame, characterized in that, Also includes: A fixed seat is arranged at the output end of the Y-axis electric slide, and a stripping chamber is arranged on the fixed seat; The tray is installed on the top of the stripping chamber to support the 3D printed products; The stripping mechanism is arranged in the stripping chamber for assisting stripping of the 3D printed product on the tray. The stripping mechanism is divided into a heating unit and a cooling unit. The heating unit is arranged in the stripping chamber to complete the heating action at the bottom of the tray, and the cooling unit is arranged in the stripping chamber to complete the cooling action at the bottom of the tray. The heating unit avoids the cooling unit in a staggered manner; A pre-processing mechanism is arranged on the tray to complete auxiliary cleaning and pre-processing operations. An extrusion unit is arranged between the pre-processing mechanism and the stripping mechanism. The stripping mechanism triggers the extrusion unit to complete the active feeding operation of the pre-processing mechanism. The pre-treatment mechanism includes: The electric linear module is arranged on one side of the stripping chamber through a bracket, and a shift seat is installed at the output end of the electric linear module; A control shaft is rotatably arranged on the transfer seat and extends above the tray; Two friction wheels are symmetrically mounted on both ends of the control shaft, and both friction wheels are in friction contact with the upper surface of the tray to complete the switching control; A cleaning piece, arranged on one side of the control shaft, to complete the surface cleaning of the tray; The processing part is arranged on the other side of the control shaft to complete the surface pretreatment of the pallet, and the switching control between the cleaning part and the processing part is completed through the cooperation of two friction wheels and the pallet; The cleaning kit includes: A No. 1 seat is arranged on one side of the control shaft, and two No. 1 rods are symmetrically slidably penetrated on the No. 1 seat, and No. 1 retaining rings are installed on the tops of the two No. 1 rods; A mounting seat is detachably fixed at the bottom of the two No. 1 poles, and a scraper is detachably mounted at the bottom of the mounting seat; Two No. 1 springs are correspondingly sleeved on the outside of the two No. 1 rods; The processing parts include: A No. 2 seat is arranged on the other side of the control shaft, and two No. 2 rods are symmetrically slidably penetrated on the No. 2 seat, and No. 2 retaining rings are installed on the tops of the two No. 2 rods; A concave seat is detachably fixed at the bottom of the two No. 2 rods, and a coating roller is rotatably installed in the concave seat; Two No. 2 springs are correspondingly sleeved on the outside of the two No. 2 rods.

2. The 3D printer with an auxiliary material discharging function according to claim 1, characterized in that: The heating unit comprises: The lifting seat is slidably arranged in the middle position of the stripping chamber; Two electric push rods are symmetrically arranged on the fixed seat, and the output ends of the two electric push rods are both transmission-connected to the bottom of the lifting seat; A plurality of No. 1 mounting parts are arranged side by side and at intervals on the lifting seat; A plurality of No. 2 mounting members are arranged on the lifting seat and are arranged alternately with the plurality of No. 1 mounting members in sequence; Multiple heating plates are arranged on top of multiple No. 1 mounting parts and No. 2 mounting parts. The multiple heating plates are combined into an integral heating platform through the No. 1 mounting parts and No. 2 mounting parts. The No. 2 mounting part is used to control the heating plate on it to produce a height difference with the heating plate on the No. 1 mounting part.

3. The 3D printer with an auxiliary material discharging function according to claim 2, characterized in that: Each No. 2 Mounting Kit includes: Two lifting areas are symmetrically arranged on both sides of the inner wall of the stripping chamber. A No. 1 rack is installed on one side of the inner wall of each lifting area, and a No. 2 rack is slidably installed on the other side of the inner wall of each lifting area. The No. 2 rack of each No. 2 mounting piece is connected to the corresponding heating plate; The synchronous shaft is rotatably arranged on the lifting seat at intervals through brackets. The synchronous shafts on each second mounting member respectively correspond to two lifting zones. Walking gears are arranged at both ends of each synchronous shaft, and each walking gear meshes with the corresponding first rack and second rack.

4. A 3D printer with an auxiliary material discharging function according to claim 3, characterized in that: The cooling unit includes: Two cooling zones, symmetrically opened on both sides of the top of the blanking chamber; Two cooling spray chambers, arranged in the two cooling zones to control the temperature of the tray; Multiple cooling fans, arranged on both sides of the lifting seat through brackets to complete auxiliary cooling.

5. A 3D printer with an auxiliary material discharging function according to claim 1, characterized in that: The extrusion unit includes: An extrusion chamber, arranged on the heating unit; A piston member, slidably and sealingly arranged in the extrusion chamber, and the top of the piston member is power-connected to the heating unit; A first pipe is communicatively arranged on one side of the bottom of the extrusion chamber, and a second pipe is communicatively installed on the other side of the bottom of the extrusion chamber, and the second pipe is communicatively connected to the pretreatment mechanism.

6. A 3D printer with an auxiliary material discharging function according to claim 1, characterized in that: The processing member further includes: A collecting chamber, detachably arranged at the inner top of the concave seat for feeding the coating roller; A receiving pipe, communicatively installed on one side of the collecting chamber.

7. A method for using a 3D printer with an auxiliary material discharging function, which uses a 3D printer with an auxiliary material discharging function as described in any one of claims 1-6, characterized in that, The usage method specifically includes the following steps: Step 1, control the print head to complete 3D printing work on the tray according to a preset, and at the same time control the print head to complete multi-directional movement to complete stable 3D printing processing; Step 2, by setting the blanking mechanism, control the heating unit to contact the lower surface of the tray to complete the heating treatment, which is beneficial to the rapid blanking of the 3D printed product on the tray; Step 3, through the second mounting member, it is possible to control the heating plate connected thereto to accelerate the descent, forming a height difference with the heating plate of the first mounting member, which is beneficial to the subsequent circulation of the cooling air; Step 4, through the pretreatment mechanism, it is possible to complete the switching control between the cleaning member and the processing member, and perform intermittent cleaning and pretreatment operations on the tray.

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