3D printer with auxiliary stripping function and use method

Abstract

The invention discloses a 3D printer with an auxiliary stripping function and a using method, and particularly relates to the technical field of 3D printing.The 3D printer with the auxiliary stripping function comprises a gantry rack, a two-axis moving table is installed on the gantry rack, a printing head is installed at the output end of the two-axis moving table, and a Y-axis electric sliding table is installed at the bottom of the gantry rack. The stripping mechanism is formed by splicing the multiple heating plates, a worker can control opening and closing of the multiple heating plates according to the size of a 3D printing product, so that dynamic heating adjustment in different space ranges is formed, the difficulty that waste is caused and the follow-up cooling difficulty is increased is avoided, the mode that the heating units are completely separated from the tray is adopted, and the working efficiency is improved. The cooling efficiency is synchronously improved, the pretreatment mechanism is additionally arranged on the tray, switching control over a cleaning piece and a treatment piece can be completed through cooperation of a control shaft and two friction wheels, and through the design, intermittent cleaning and pretreatment operation can be completed on the tray.

Description

Technical Field

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

[0002] ‌3D printing is an additive manufacturing technology based on three-dimensional CAD data. It creates three-dimensional objects by stacking materials layer by layer. It takes into account the diversity of materials: it is compatible with a variety of materials such as engineering plastics, photosensitive resins, metal powders, ceramic materials, and even realizes composite printing. Through precise digital control, it realizes the precise use of materials and efficient management of energy, reducing the generation of waste by-products.‌ 3D printing is usually achieved by using digital technology material printers, and is often used to make models in the fields of mold manufacturing, industrial design, etc. 3D printers usually print 3D printed parts on a tray during the printing process. Currently, the bottom of the 3D printed part is softened by subsequently heating the tray so that it can be removed from the tray.

[0003] A 3D printer stripping device disclosed in the patent with reference publication number CN117549560B can conduct the heat generated by the heating end of the refrigeration plate through the guide plate on the upper plate seat during stripping, and conduct the heat to the tray through the groove guide plate and the extension plate to heat the tray and soften the bottom of the 3D printed part, thereby completing the stripping.

[0004] At present, after printing is completed, 3D printers mostly use a heating tray to complete the auxiliary stripping action. For example, the stripping device mentioned above completes the heating and cooling of the tray by flipping the cooling plate. However, in a single stripping operation, the hand wheel needs to be repeatedly operated to complete the flipping and switching of the cooling plate, which is time-consuming and labor-intensive, increases the workload, and affects the printing efficiency. In addition, the stripping device adopts the cooling plates to be arranged side by side at intervals, so that the interval area between adjacent cooling plates cannot be heated well. Similarly, when the cooling plate is subsequently cooled, it is also limited to the extended plate area, and there is a temperature difference, which is not conducive to the stripping of the finished product. In addition, the current stripping device cannot complete active cleaning and pre-processing operations on the pallet. There is a certain amount of residue on the pallet after a single stripping is completed, which may easily interfere with subsequent printing. At the same time, the pallet cannot be pre-processed synchronously. If this continues for a long time, residual material will accumulate on the pallet, continuously increasing the difficulty of subsequent stripping. Summary of the invention

[0005] The purpose of the present invention is to provide a 3D printer with auxiliary material stripping function and a use method to solve the above technical problems.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] 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: 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; 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.

[0008] Furthermore, 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 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.

[0009] Further, each second mounting member comprises: 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 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.

[0010] Furthermore, the cooling unit comprises: Two cooling zones are symmetrically opened on both sides of the top of the stripping chamber; Two cooling spray chambers are set in two cooling zones to complete the temperature control of the tray; Multiple cooling fans are arranged on both sides of the lifting base through brackets to provide auxiliary cooling.

[0011] Further, the extrusion unit comprises: An extrusion chamber is disposed on the heating unit; 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; The first pipe is connected to one side of the bottom of the extrusion chamber, and the second pipe is connected to the other side of the bottom of the extrusion chamber, and the second pipe is connected to the pretreatment mechanism.

[0012] Furthermore, the pre-processing mechanism comprises: 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 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.

[0013] Further, the cleaning member comprises: 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.

[0014] Furthermore, the processing element includes: 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.

[0015] Furthermore, the processing unit also includes: A collecting chamber, which is detachably arranged at the top of the concave seat and is used for feeding the coating roller; The receiving pipe is connected and installed on one side of the collecting chamber.

[0016] The present invention also provides a method for using a 3D printer with an auxiliary material stripping function, and the method specifically comprises the following steps: Step 1: Control the print head to complete the 3D printing work on the tray as scheduled, and at the same time control the print head to complete multi-directional movement to complete stable 3D printing processing; Step 2: By setting a stripping mechanism, the heating unit is controlled to contact with the lower surface of the tray to complete the heating process, which is conducive to the rapid stripping of the 3D printed product on the tray; Step 3: The heating plate connected to the second mounting piece can be controlled to accelerate downward, thereby forming a height difference with the heating plate of the first mounting piece, which is beneficial to the circulation of subsequent cooling air; 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 for the tray.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a stripping mechanism. Under normal conditions, the heating unit is controlled to contact with the lower surface of the tray to complete the heating process, which is beneficial to the rapid stripping of the 3D printed product on the tray. The heating unit is formed by splicing a plurality of heating plates, 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 printed product, thereby forming dynamic heating adjustment in different spatial ranges, avoiding the dilemma of causing waste and increasing the difficulty of subsequent cooling, and the operation is flexible, avoiding the waste of heat. The present invention can control the heating plate connected thereto to accelerate its descent with the assistance of the second mounting piece, and can form a height difference with the heating plate of the first mounting piece, which is beneficial to the circulation of subsequent cooling cold air, and adopts a method of completely separating the heating unit from the tray, so that the overall cooling efficiency is improved, the cooling efficiency is simultaneously improved, the circulation of cold air is accelerated, and the heat of the tray can be quickly dissipated; The present invention adds a pretreatment mechanism on the pallet, and can complete the switching control of the cleaning part and the processing part through the cooperation of the control shaft and the two friction wheels, so that when the pretreatment mechanism moves on the pallet, the cleaning part contacts the pallet to complete the scraping cleaning, and the processing part separates from the pallet to complete the avoidance. Conversely, when the pretreatment mechanism is reset, the processing part contacts the pallet to complete the pretreatment operation, and the cleaning part separates from the pallet to complete the avoidance. Such a design can complete intermittent cleaning and pretreatment operations on the pallet, so that the surface of the pallet remains clean and the pretreatment can be completed, which is beneficial to the subsequent removal of materials and avoids the problem of a large amount of residual material accumulating on the pallet.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is the overall front view of the present invention; Figure 2 It is a schematic diagram of the distribution of the pallet and the gantry frame of the present invention; Figure 3 It is a schematic diagram of the connection between the tray and the stripping chamber of the present invention; Figure 4 It is a schematic diagram of the distribution of the extrusion unit and the stripping mechanism of the present invention; Figure 5 It is a schematic diagram of the separation of the fixing seat and the stripping chamber of the present invention; Figure 6 It is a schematic diagram of the separation of the tray and the stripping chamber of the present invention; Figure 7 It is a schematic diagram of the contact between multiple heating plates and a tray of the present invention; Figure 8 It is a schematic diagram of a cooling unit of the present invention; Fig. 9 This is a schematic diagram of the structure of the second mounting member of the present invention; Fig.10 It is a schematic diagram of the distribution of multiple No. 2 mounting parts of the present invention; Fig.11 It is a schematic diagram of installing the pretreatment mechanism of the present invention on a tray; Fig.12 This is a schematic diagram of the distribution of the friction wheel and the tray of the present invention; Fig.13 It is a schematic diagram of the pretreatment mechanism of the present invention; Fig.14 It is a schematic diagram of a processing element of the present invention.

[0020] 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, No. 1 mounting piece; 9, No. 2 mounting piece; 91, lifting area; 92, No. 1 rack; 93, No. 2 rack; 94, synchronous shaft; 95, travel gear; 10, heating plate; 11, cooling area; 12, cooling spray chamber; 13, cooling fan; 14, extrusion chamber; 15, piston; 1 6. Tube No. 1; 17. Tube No. 2; 18. Electric linear module; 19. Shift seat; 20. Control shaft; 21. Friction wheel; 22. Seat No. 1; 23. Rod No. 1; 24. Retaining ring No. 1; 25. Mounting seat; 26. Scraper; 27. Spring No. 1; 28. Seat No. 2; 29. ​​Rod No. 2; 30. Retaining ring No. 2; 31. Concave seat; 32. Applicator roller; 33. Spring No. 2; 34. Collection chamber; 35. Receiving tube. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship 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 understood as limiting the present invention.

[0023] 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: 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; 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. 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. 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.

[0024] 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.

[0025] Embodiment 2: Based on the stripping mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the stripping mechanism.

[0026] like Figure 7 As shown, the heating unit comprises: A lifting seat 6 is slidably arranged in the middle position of the stripping chamber 4; 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; A plurality of first mounting members 8 are arranged side by side and spaced apart on the lifting seat 6; A plurality of No. 2 mounting members 9 are arranged on the lifting seat 6 and are arranged alternately with the plurality of No. 1 mounting members 8 in sequence; A plurality of heating plates 10 are arranged on the top of a plurality of No. 1 mounting parts 8 and No. 2 mounting parts 9. The heating plates 10 are specifically one of an electric heating plate and a water heating plate. The plurality of heating plates 10 are combined into an integral heating platform through the No. 1 mounting parts 8 and the No. 2 mounting parts 9. The No. 2 mounting parts 9 are used to control the height difference between the heating plates 10 thereon and the heating plates 10 on the No. 1 mounting parts 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 difference. like Fig. 9 and Fig.10 As shown, each second mounting member 9 includes: Two lifting areas 91 are symmetrically arranged on both sides of the inner wall of the stripping chamber 4. A No. 1 rack 92 is installed on one side of the inner wall of each lifting area 91, and a No. 2 rack 93 is slidably installed on the other side of the inner wall of each lifting area 91. The No. 2 rack 93 of each No. 2 mounting member 9 is connected to the corresponding heating plate 10, and a sliding area cooperating with the No. 2 rack 93 is provided in the lifting area 91; The synchronous shaft 94 is rotatably arranged on the lifting seat 6 through the bracket. The synchronous shaft 94 on each No. 2 mounting member 9 corresponds to the two lifting areas 91 respectively. Travel gears 95 are arranged at both ends of each synchronous shaft 94. Each travel gear 95 is meshed with the corresponding No. 1 rack 92 and No. 2 rack 93. It is worth noting that: when stripping, the stripping mechanism is provided. Under normal conditions, the electric push rod 7 pushes the lifting seat 6 to move upward in the stripping chamber 4, and multiple No. 1 mounting parts 8 and No. 2 mounting parts 9 control multiple heating plates 10 to be synchronously spliced ​​to the lower surface of the tray 5. The opening and closing of the heating plates 10 can complete the heating of the bottom of the tray 5, so that the bottom of the 3D printed product is softened, which is convenient for stripping; like Figure 8 As shown, the cooling unit includes: Two cooling zones 11 are symmetrically arranged on both sides of the top of the stripping chamber 4; Two cooling spray chambers 12 are arranged in the two cooling zones 11 to complete the temperature control of the tray 5. The two cooling spray chambers 12 are connected to the external cold source gas through pipelines. The nozzles of the two cooling spray chambers 12 are designed to face the inside of the stripping chamber 4, and the nozzles of the two cooling spray chambers 12 are arranged toward the bottom of the tray 5, which is conducive to the rapid cooling of the tray 5. 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; It is worth noting that when the tray 5 is cooled down: a cooling unit is provided to control the electric push rod 7 and the lifting seat 6 to move downward. First, the heating plate 10 thereon is controlled to move downward and separate from the tray 5 via the No. 1 mounting member 8. When the lifting seat 6 moves downward, multiple synchronous shafts 94 are driven to move downward. Since the traveling gears 95 at both ends of the synchronous shaft 94 are meshed with the No. 1 rack 92 and the No. 2 rack 93, when the synchronous shaft 94 moves downward, the downward movement of the lifting seat 6 is first sensed and the synchronous shaft 94 is driven to move downward. When the synchronous shaft 94 moves downward, the traveling gear 95 is rotated, so that the No. 2 rack 93 is superimposed with the rotation amount of the traveling gear 95 during the downward movement, so that The second rack 93 and the heating plate 10 thereon are accelerated to move downward, and can be highly dislocated with the heating plate 10 on the first mounting member 8, which is beneficial to the subsequent cooling. Then, the external cold air is sent into the cooling spray chamber 12 and sprayed to the lower surface of the tray 5 to complete the cooling. Then, the cold air is discharged through the staggered heating plate 10. At the same time, the design of multiple cooling fans 13 accelerates the circulation of cold air, and can quickly dissipate the heat of the tray 5, which is beneficial to the subsequent 3D printing process. After the cooling is completed, the electric push rod 7 is reset to control the first mounting member 8 and the heating plate 10 on the second mounting member 9 to reset to the lower surface of the tray 5 again to wait for the subsequent heating action; like Figure 4 As shown, in an embodiment of the present invention, the extrusion unit includes: The 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 open. The extrusion chamber 14 is connected to the external release agent through a No. 1 pipe 16 to complete continuous feeding. The type of the release agent is adapted and adjusted according to the printing material to ensure a good demolding effect; The piston member 15 is provided with a sliding seal in the extrusion chamber 14, and the top of the piston member 15 is connected with the heating unit in a dynamic manner. Specifically, the top of the piston member 15 is connected with the bottom of the lifting seat 6 in a detachable fixed manner; A No. 1 pipe 16 is connected to one side of the bottom of the extrusion chamber 14, and a No. 1 one-way valve for controlling the one-way introduction of the medium into the extrusion chamber 14 is arranged at the end of the No. 1 pipe 16. A No. 2 pipe 17 is connected to the other side of the bottom of the extrusion chamber 14, and a No. 2 one-way valve for controlling the one-way discharge of the medium from the extrusion chamber 14 is arranged at the end of the No. 2 pipe 17, and the No. 2 pipe 17 is connected to the pretreatment mechanism; It is worth mentioning that when the pretreatment mechanism is replenished with materials: by providing an extrusion unit, when the lifting seat 6 moves downward, the cooperatively controlled piston member 15 moves downward in the extrusion chamber 14, and the release agent in the extrusion chamber 14 is sent into the pretreatment mechanism through the No. 2 pipe 17. After the subsequent lifting seat 6 is reset, the control piston member 15 is reset, and the external release agent is synchronously introduced into the extrusion chamber 14 to wait for subsequent feeding. Therefore, the extrusion unit can follow the lifting seat 6 to complete the cooperative action, and can complete the continuous feeding operation of the pretreatment mechanism.

[0027] Embodiment 3: Based on the pretreatment mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the pretreatment mechanism.

[0028] like Fig.11 , Fig.12 and Fig.13 As shown, the pre-processing mechanism includes: The electric linear module 18 is arranged on one side of the stripping chamber 4 through a bracket, and a shift seat 19 is installed at the output end of the electric linear module 18. At the same time, in order to improve stability, the electric linear module 18 and the shift seat 19 can also be added on the other side of the stripping chamber 4, and the other end of the control shaft 20 can also be guided to move, so as to ensure the stability of the switching between the cleaning part and the processing part; The control shaft 20 is rotatably disposed on the shift seat 19 and extends above the tray 5; Two friction wheels 21 are symmetrically sleeved on both ends of the control shaft 20. Both friction wheels 21 are in friction contact with the upper surface of the tray 5 to complete the switching control. In order to increase the friction force, a friction area adapted to the two friction wheels 21 can be set on the tray 5; A cleaning member is arranged on one side of the control shaft 20 to complete the surface cleaning of the tray 5; The processing piece is arranged on the other side of the control shaft 20 to complete the surface pretreatment of the tray 5. The two friction wheels 21 cooperate with the tray 5 to complete the switching control between the cleaning piece and the processing piece. In order to improve the stability of the switching between the cleaning piece and the processing piece, limiting blocks are arranged on both sides of the shifting seat 19 to limit the extreme movement position of the cleaning piece and the processing piece to avoid excessive movement of the cleaning piece and the processing piece to affect the use; In an embodiment of the present invention, the cleaning member comprises: A No. 1 seat 22 is arranged at one side of the control shaft 20. Two No. 1 rods 23 are symmetrically slidably penetrated on the No. 1 seat 22. A No. 1 retaining ring 24 is installed on the top of the two No. 1 rods 23 to limit the movement of the No. 1 rods 23. The mounting seat 25 is detachably fixed at the bottom of the two No. 1 rods 23. A scraper 26 is detachably mounted at the bottom of the mounting seat 25. The scraper 26 is made of metal or a flexible material, and can scrape and clean the tray 5. Two No. 1 springs 27 are correspondingly sleeved outside the two No. 1 rods 23, and the two No. 1 springs 27 are arranged between the No. 1 retaining ring 24 and the No. 1 seat 22 to control the flexible movement of the scraper 26; like Fig.14 As shown, in the embodiment of the present invention, the processing element includes: A No. 2 seat 28 is arranged at the other side of the control shaft 20. Two No. 2 rods 29 are symmetrically slidably penetrated on the No. 2 seat 28. A No. 2 retaining ring 30 is installed on the top of the two No. 2 rods 29 to limit the movement of the No. 2 rods 29. The concave seat 31 is detachably fixed at the bottom of the two No. 2 rods 29. A smear roller 32 is rotatably installed in the concave seat 31. An absorption layer is sleeved on the outside of the smear roller 32. The received medium is transferred to the surface of the tray 5 through the absorption layer to complete the pretreatment. Two No. 2 springs 33 are correspondingly sleeved outside the two No. 2 rods 29, and the two No. 2 springs 33 are arranged between the No. 2 retaining ring 30 and the concave seat 31 to control the flexible movement of the coating roller 32; The processing part also includes: The collecting chamber 34 is detachably arranged at the top of the concave seat 31 for feeding the coating roller 32. The bottom of the collecting chamber 34 is open, and the opening at the bottom of the collecting chamber 34 is designed to be in the same shape as the coating roller 32. At the same time, the collecting chamber 34 and the coating roller 32 can be set to maintain a certain gap according to needs, so that the release agent can be discharged smoothly. The distance between the two can be freely set according to needs, so that the collecting chamber 34 can continuously release the medium to the surface of the coating roller 32 to complete the pretreatment; The receiving pipe 35 is connected and installed on one side of the collecting chamber 34, and the receiving pipe 35 is connected with the second pipe 17 through a telescopic pipe to complete the medium reception; 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.

[0029] Embodiment 4: A method for using a 3D printer with an auxiliary material stripping function, the method specifically comprising the following steps: 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; 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; 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; 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.

[0030] The present invention provides a 3D printer with an auxiliary stripping function and a method for using the same. The specific working principle is as follows: first, the print head 2 is controlled to complete the 3D printing work on the tray 5 as scheduled, and the print head 2 is controlled to complete multi-directional movement, so as to complete stable 3D printing processing. By providing a stripping mechanism, under normal conditions, the heating unit is controlled to contact with the lower surface of the tray 5 to complete the heating treatment, which is beneficial to the rapid stripping of the 3D printed product on the tray 5. The heating unit is spliced ​​with a plurality of heating plates 10, 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, thereby forming dynamic heating adjustment in different spatial ranges, avoiding the dilemma of causing waste and increasing the difficulty of subsequent cooling. The operation is flexible, avoiding the waste of heat, and avoiding the problem of temperature difference. During the subsequent cooling, with the assistance of the second mounting member 9, the heating plate 10 connected thereto can be controlled 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. In addition, the heating unit is completely separated from the tray 5, so that the overall cooling efficiency is improved, and the cooling efficiency is improved simultaneously. By adding a pretreatment mechanism on the tray 5, after a single material stripping is completed, the pretreatment mechanism is controlled to move, and the switching control of the cleaning part and the processing part can be completed through the coordination of the control shaft 20 and the two friction wheels 21, so that when the pretreatment mechanism moves on the tray 5, the cleaning part contacts the tray 5 to complete the scraping cleaning, and the processing part separates from the tray 5 to complete the avoidance. Conversely, 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 the avoidance. With this design, intermittent cleaning and pretreatment operations can be completed on the tray 5, so that the surface of the tray 5 remains clean and the pretreatment can be completed, which is beneficial to the subsequent material stripping and use, and avoids the problem of a large amount of residual material accumulating on the tray 5.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction 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 any one or more embodiments or examples in a suitable manner.

[0032] 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 implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A 3D printer with auxiliary stripping function, comprising a gantry frame, a two-axis moving table is installed on the gantry frame, a print head is installed at the output end of the two-axis moving table, 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; 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.

2. A 3D printer with auxiliary material stripping 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. A 3D printer with auxiliary material stripping 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 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.

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

5. A 3D printer with auxiliary material stripping function according to claim 1, characterized in that: The extrusion unit comprises: An extrusion chamber is disposed on the heating unit; 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; The first pipe is connected to one side of the bottom of the extrusion chamber, and the second pipe is connected to the other side of the bottom of the extrusion chamber, and the second pipe is connected to the pretreatment mechanism.

6. A 3D printer with auxiliary material stripping function according to claim 1, characterized in that: 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 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.

7. A 3D printer with auxiliary material stripping function according to claim 6, characterized in that: 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.

8. A 3D printer with auxiliary material stripping function according to claim 7, characterized in that: 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.

9. A 3D printer with auxiliary material stripping function according to claim 8, characterized in that: The processing part also includes: A collecting chamber, which is detachably arranged at the top of the concave seat and is used for feeding the coating roller; The receiving pipe is connected and installed on one side of the collecting chamber.

10. A method for using a 3D printer with an auxiliary material stripping function, using the 3D printer with an auxiliary material stripping function as claimed in any one of claims 1 to 9, characterized in that: The method of use specifically includes the following steps: Step 1: Control the print head to complete the 3D printing work on the tray as scheduled, and at the same time control the print head to complete multi-directional movement to complete stable 3D printing processing; Step 2: By setting a stripping mechanism, the heating unit is controlled to contact with the lower surface of the tray to complete the heating process, which is conducive to the rapid stripping of the 3D printed product on the tray; Step 3: The heating plate connected to the second mounting piece can be controlled to accelerate downward, thereby forming a height difference with the heating plate of the first mounting piece, which is beneficial to the circulation of subsequent cooling air; 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 for the tray.

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