Three-dimensional printing positioning device

Abstract

The utility model provides a three-dimensional printing positioning device which is applied to a three-dimensional printing grafting method and comprises a base and a base plate detachably installed on the base, a positioning mechanism used for positioning the base plate is arranged on the base, and the base plate is used for bearing powder and enabling the powder to be located at the position suitable for three-dimensional printing. By the adoption of the technical scheme, after primary printing, the first workpiece unit and the base plate are detached from the base for powder discharging, the first workpiece unit after powder discharging and the base plate are installed on the positioning mechanism again, and then secondary powder stacking and secondary printing are conducted; the deviation of two printing positions is reduced, and the accuracy of three-dimensional printing and the yield of workpieces are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of three-dimensional printing positioning devices, and more specifically, to a three-dimensional printing positioning device. Background Technology

[0002] In the existing 3D printing technology field, in order to make the interior of the workpiece hollow, 3D printing technology prints on a powder pile, stores the powder in the preset hollow part, and then discharges the powder from the hollow part through the powder discharge port opened on the workpiece. However, in the process of multiple 3D printing, the workpiece needs to be disassembled to discharge the powder. During the second printing, displacement is prone to occur, which makes it impossible for subsequent workpiece units to be accurately printed on the previous workpiece unit, thus reducing the production yield. Utility Model Content

[0003] The purpose of this invention is to provide a 3D printing positioning device to solve the technical problem that existing 3D printing devices are prone to workpiece displacement, resulting in a decrease in production yield.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] Firstly, a 3D printing grafting method is provided, including:

[0006] One-time powder delivery: Provides a preset quantity of powder;

[0007] One-time printing: Three-dimensional printing of the powder in the first layer of powder, so that the powder forms a first workpiece unit, the first workpiece unit having a hollow structure and a powder discharge port communicating with the hollow structure;

[0008] Powder discharge: Discharging the powder from the hollow structure;

[0009] Secondary powder deposition: Powder is deposited on the first workpiece unit;

[0010] Secondary printing: Three-dimensional printing of the powder in the second batch of powder, so that the powder forms a second workpiece unit, wherein the second workpiece unit covers the powder discharge port, and the second workpiece unit is connected to the first workpiece unit to form a workpiece.

[0011] By adopting the above technical solution, due to the secondary 3D printing of the workpiece, there are fewer restrictions when setting the powder discharge port. A large-sized powder discharge port can be set in the first workpiece unit, which is conducive to the discharge of powder in the hollow structure and reduces powder residue. In addition, powder is piled on the first workpiece unit and 3D printed into a second workpiece unit, so that the second workpiece unit can cover the powder discharge port, avoid the powder discharge port being exposed, and improve the aesthetics of the workpiece.

[0012] In one embodiment, during the first printing step, the first workpiece unit is further formed with a cover plate for covering the powder discharge port; during the second powder stacking step, the cover plate is used to cover the powder discharge port.

[0013] By adopting the above technical solution, the powder discharge port is covered with a cover plate before the secondary powder stacking, so that the powder from the secondary powder stacking will not fall into the internal structure again from the powder discharge port, reducing the possibility of internal reference powder.

[0014] Secondly, a three-dimensional printing positioning device is provided for use in a three-dimensional printing grafting method, comprising: a base, a substrate detachably mounted on the base, the base being provided with a positioning mechanism for positioning the substrate, and the substrate being used to carry powder and position the powder at a suitable position for three-dimensional printing.

[0015] By adopting the above technical solution, after one printing, the first workpiece unit and the substrate are removed from the base for powder removal. The first workpiece unit and the substrate after powder removal are then reinstalled on the positioning mechanism for a second powder build-up and a second printing. Since both printings are positioned by the positioning mechanism, the deviation between the two printing positions is reduced, and the accuracy of 3D printing and the yield of the workpiece are improved.

[0016] In one embodiment, the top of the substrate has a printing surface for holding the powder, the bottom of the substrate has a positioning hole, and the positioning mechanism includes a positioning member for inserting into the positioning hole to position the substrate.

[0017] By adopting the above technical solution, the positioning base plate of the positioning mechanism was realized.

[0018] In one embodiment, the substrate has an installation direction defined, and the bottom of the substrate is provided with a locking groove parallel to the installation direction. The positioning mechanism further includes a locking member that slides in the locking groove. The locking member slides into the locking groove along the installation direction. The positioning member is inserted into the positioning hole after the locking member slides to the installation position. The installation position corresponds to the substrate moving relative to the base to a suitable position for 3D printing.

[0019] By adopting the above technical solution, the directional movement between the substrate and the base is achieved through the cooperation between the locking groove and the locking component, and the locking component and the positioning component together maintain the relative position of the substrate and the base.

[0020] In one embodiment, an elastic element is provided between the positioning member and the base for driving the positioning member into the positioning hole.

[0021] By adopting the above technical solution, the positioning component is inserted into the positioning hole under the elastic force of the elastic component, realizing the automatic insertion of the positioning component into the positioning hole when the substrate is moved to the installation position.

[0022] In one embodiment, a locking seat is provided at the installation position of the locking slide groove, which is detachably connected to the locking member, and the locking member is connected to the locking seat when it is moved to the installation position.

[0023] By adopting the above technical solution, the substrate is locked onto the base.

[0024] In one embodiment, an operating element is provided between the locking member and the base, the operating element being used to drive the locking member to extend or retract relative to the base to connect with the locking seat.

[0025] By adopting the above technical solution, the locking component is easy to operate.

[0026] In one embodiment, the operating element includes a screw and a drive block threadedly connected to the screw, the drive block having a drive ramp, the screw driving the drive ramp to move axially along the screw, the drive ramp being used to extend and retract the locking element relative to the base.

[0027] By adopting the above technical solution, the structure of the operating component is simple and easy to implement.

[0028] In one embodiment, the locking seat is provided with a locking groove, and the locking member is provided with a locking head that matches the locking groove. The locking head extends into the locking groove when the locking member extends relative to the base, and the locking head locks the locking seat when the locking member retracts relative to the base.

[0029] By adopting the above technical solution, it is beneficial to the locking fit between the locking component and the locking seat.

[0030] In one embodiment, the bottom of the substrate is provided with a plurality of parallel-spaced locking grooves, and the positioning mechanism further includes locking members that correspond one-to-one with the locking grooves.

[0031] By adopting the above technical solution, the stability of the substrate when positioned on the base is improved.

[0032] In one embodiment, the base is further provided with an abutment member that abuts against the substrate when the substrate moves relative to the base to a suitable position for 3D printing.

[0033] By adopting the above technical solution, the accuracy of substrate positioning has been further improved. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a three-dimensional structural diagram of the three-dimensional printing positioning device and the workpiece provided in this embodiment of the utility model.

[0036] Figure 2 This is a schematic diagram of the 3D printing grafting method provided in this embodiment of the utility model. Figure 1 .

[0037] Figure 3 This is a schematic diagram of the 3D printing grafting method provided in this embodiment of the utility model. Figure 2 .

[0038] Figure 4 This is a schematic diagram of the 3D printing grafting method provided in this embodiment of the utility model. Figure 3 .

[0039] Figure 5 This is an exploded view of one perspective of the three-dimensional printing positioning device provided in this embodiment of the utility model.

[0040] Figure 6 This is an exploded view of the three-dimensional printing positioning device provided in this embodiment of the utility model.

[0041] Figure 7 This is a three-dimensional structural diagram of the operating component and locking component provided in the embodiment of this utility model.

[0042] The labels for the attached figures are as follows:

[0043] 100. Workpiece; 10. First workpiece unit; 20. Second workpiece unit; 30. Cover plate; 101. Powder discharge port;

[0044] 200. Three-dimensional printing positioning device;

[0045] 1. Base; 2. Base plate; 3. Positioning mechanism;

[0046] 21. Positioning hole; 31. Positioning element; X, Installation direction; 22. Locking groove; 32. Locking element; 23. Locking seat; 33. Operating element; 331. Screw; 332. Drive block; 3321. Drive inclined surface; 231. Locking groove; 321. Locking head; 11. Abutment element. Detailed Implementation

[0047] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0048] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0051] like Figure 1 As shown in the figure, this utility model provides a three-dimensional printing grafting method for secondary printing of workpieces with hollow structures. This results in the final product of the workpiece having no powder discharge port, improving the workpiece's aesthetics. Simultaneously, it improves the cleanliness of powder discharge during processing, reducing residual powder in the hollow structure and minimizing the decrease in workpiece yield. The following detailed embodiments illustrate this method:

[0052] Please refer to the following: Figures 2 to 4 The 3D printing grafting method provided in this embodiment includes the following steps:

[0053] One-time powder delivery: Provides a preset quantity of powder;

[0054] One-time printing: The powder is 3D printed on the first powder stack, so that the powder forms the first workpiece unit 10, the first workpiece unit 10 has a hollow structure and a powder discharge port 101 that connects the hollow structure;

[0055] Powder removal: removing powder from the hollow structure;

[0056] Secondary powder deposition: Powder is deposited on the first workpiece unit 10;

[0057] Secondary printing: The second batch of powder is 3D printed so that the powder forms a second workpiece unit 20, wherein the second workpiece unit 20 covers the powder discharge port 101, and the second workpiece unit 20 is connected to the first workpiece unit 10 to form a workpiece 100.

[0058] Here, it can be understood that "powder stacking" refers to stacking a preset amount of powder on the position to be 3D printed, such as the substrate 2 used to hold the powder; specifically, the preset amount of powder is matched with the weight and volume of the workpiece 100 to be printed, so that the powder at the preset position can be printed into the workpiece 100 of the preset shape. Since the workpiece 100 has a hollow structure, the powder in the hollow structure needs to be discharged from the hollow structure after printing is completed.

[0059] One-time printing refers to three-dimensional printing of powder; three-dimensional printing of the powder piled up for the first time, so that the powder forms a first workpiece unit 10, wherein the interior of the first workpiece unit 10 forms a hollow structure, and the first workpiece unit 10 also forms a powder discharge port 101 that connects to the hollow structure, so that the residual powder in the hollow structure can be discharged from the powder discharge port 101.

[0060] Powder discharge refers to the process of discharging powder from inside the workpiece 100; specifically, the first workpiece unit 10 has a hollow structure, and powder remains in the hollow structure. In this step, the powder in the hollow structure is discharged from the powder discharge port 101.

[0061] Secondary powder stacking refers to the process of stacking a preset amount of powder onto the first workpiece unit 10.

[0062] Secondary printing refers to three-dimensional printing of the powder on the first workpiece unit 10; three-dimensional printing of the powder piled up for the second time, so that the powder forms a second workpiece unit 20, wherein the second workpiece unit 20 covers the powder discharge port 101 and is connected to the first workpiece unit 10 to form a workpiece 100.

[0063] The specific process of the 3D printing grafting method provided in this embodiment is as follows:

[0064] A preset amount of powder is deposited on substrate 2, and the powder is 3D printed using a 3D printing device to form a first workpiece unit 10. The first workpiece unit 10 has a hollow structure and a powder discharge port 101 that connects to the hollow structure. After one printing, the residual powder in the hollow structure is discharged from the powder discharge port 101. The first workpiece unit 10 is fixed on substrate 2, and the powder is deposited on the first workpiece unit 10 again. The powder is then 3D printed using a 3D printing device to form a second workpiece unit 20. Since the powder is directly 3D printed on the first workpiece unit 10, the second workpiece unit 20 is connected to the first workpiece unit 10 to form a workpiece 100. At the same time, the second workpiece unit 20 can be set to cover the position of the powder discharge port 101, thus hiding the powder discharge port 101.

[0065] By adopting the above technical solution, since the workpiece 100 is 3D printed twice, there are fewer restrictions when setting the powder discharge port 101. A large-sized powder discharge port 101 can be set in the first workpiece unit 10, which is conducive to the discharge of powder in the hollow structure and reduces powder residue. In addition, powder is piled on the first workpiece unit 10 and 3D printed into a second workpiece unit 20, so that the second workpiece unit 20 can cover the powder discharge port 101, avoiding the powder discharge port 101 from being exposed and improving the aesthetics of the workpiece 100.

[0066] In one embodiment, during the first printing step, the first workpiece unit 10 further includes a cover plate 30 for covering the powder discharge port 101; during the second powder stacking step, the cover plate 30 is used to cover the powder discharge port 101.

[0067] Here, it can be understood that the cover plate 30 is used to cover the powder discharge port 101 to prevent powder from falling back into the internal structure from the powder discharge port 101 during the secondary powder stacking, further reducing the possibility of residual powder in the internal structure; specifically, in the first printing step, the first workpiece unit 10 can be three-dimensionally printed into a cover plate 30, wherein the cover plate 30 is located near the powder discharge port 101, so that the cover plate 30 can be covered on the powder discharge port 101 in the next step; in the second powder stacking step, the cover plate 30 is first covered on the powder discharge port 101, and the shape and size of the cover plate 30 match the shape and size of the powder discharge port 101, so that the cover plate 30 can just cover the powder discharge port 101; preferably, the cover plate 30 can be connected to the surrounding part of the powder discharge port 101 by welding or bonding to achieve a sealed powder discharge port 101.

[0068] By adopting the above technical solution, since the powder discharge port 101 is covered by the cover plate 30 before the secondary powder stacking, the powder from the secondary powder stacking will not fall into the internal structure again from the powder discharge port 101, thus reducing the possibility of internal reference powder.

[0069] Please refer to the following: Figure 5Secondly, a three-dimensional printing positioning device 200 is provided for use in a three-dimensional printing grafting method, comprising: a base 1, a substrate 2 detachably mounted on the base 1, a positioning mechanism 3 for positioning the substrate 2 on the base 1, and the substrate 2 for carrying powder and positioning the powder at a suitable position for three-dimensional printing.

[0070] Here, it can be understood that the base 1 refers to the seat used to support the substrate 2. The base 1 is provided with a positioning mechanism 3, which is used to position the substrate 2 so that the substrate 2 is in a suitable position for 3D printing. The substrate 2 refers to the plate-shaped component used to support the powder. Since the positioning mechanism 3 positions the substrate 2 in a suitable position for 3D printing, the powder on the substrate 2 is also in a suitable position for 3D printing.

[0071] By adopting the above technical solution, after one printing, the first workpiece unit 10 and the substrate 2 are removed from the base 1 for powder removal. The first workpiece unit 10 and the substrate 2 after powder removal are then reinstalled on the positioning mechanism 3, and then a second powder build-up and a second printing are performed. Since both printings are positioned by the positioning mechanism 3, the deviation between the two printing positions is reduced, the accuracy of 3D printing and the yield of workpiece 100 are improved.

[0072] Please refer to the following: Figure 6 In one embodiment, the top of the substrate 2 is provided with a printing surface for carrying powder, and the bottom of the substrate 2 is provided with a positioning hole 21. The positioning mechanism 3 includes a positioning member 31 for inserting into the positioning hole 21 to position the substrate 2.

[0073] Specifically, the substrate 2 has a top and a bottom, wherein the top is provided with a printing surface for holding powder, and the bottom of the substrate 2 is provided with a positioning hole 21. The positioning mechanism 3 includes a positioning member 31 inserted into the positioning hole 21, and the interaction between the positioning hole 21 and the positioning member 31 is used to position the substrate 2.

[0074] It needs to be further explained that the positioning element 31 can be a positioning post.

[0075] By adopting the above technical solution, the positioning mechanism 3 and the positioning base plate 2 were realized.

[0076] In one embodiment, the substrate 2 is defined with an installation direction X, and the bottom of the substrate 2 is also provided with a locking groove 22 parallel to the installation direction X. The positioning mechanism 3 also includes a locking member 32 that slides in the locking groove 22. The locking member 32 slides into the locking groove 22 along the installation direction X. After the locking member 32 slides to the installation position, the positioning member 31 is inserted into the positioning hole 21. The installation position corresponds to the substrate 2 moving relative to the base 1 to a suitable position for 3D printing.

[0077] By adopting the above technical solution, the directional movement between the base plate 2 and the base 1 is realized through the cooperation between the locking groove 22 and the locking member 32, and the locking member 32 and the positioning member 31 jointly maintain the relative position of the base plate 2 and the base 1.

[0078] In one embodiment, an elastic element is provided between the positioning member 31 and the base 1 for driving the positioning member 31 into the positioning hole 21.

[0079] Here, it can be understood that the elastic element refers to the component used to provide elastic force to the positioning element 31. The elastic element includes, but is not limited to, a spring. The two ends of the elastic element abut against the positioning element 31 and the base 1 respectively. The elastic force of the elastic element drives the positioning element 31 to extend relative to the base 1. When the positioning element 31 moves to be directly opposite the positioning hole 21, the elastic element drives the positioning element 31 to be inserted into the positioning hole 21.

[0080] By adopting the above technical solution, the positioning member 31 is inserted into the positioning hole 21 under the elastic force of the elastic member, so that the positioning member 31 is automatically inserted into the positioning hole 21 when the substrate 2 is moved to the installation position.

[0081] In one embodiment, the mounting position of the locking slide 22 is provided with a locking seat 23 that is detachably connected to the locking member 32, and the locking member 32 is connected to the locking seat 23 when it is moved to the mounting position.

[0082] Here, it can be understood that in this embodiment, the locking member 32 can be a clamping pin, and the locking member 32 can be connected to the locking seat 23, thereby locking the base plate 2 onto the base 1.

[0083] By adopting the above technical solution, the substrate 2 is locked onto the base 1.

[0084] In one embodiment, an operating member 33 is provided between the locking member 32 and the base 1. The operating member 33 is used to drive the locking member 32 to extend or retract relative to the base 1 to connect with the locking seat 23.

[0085] Here, it can be understood that the user operates the operating component 33 to drive the locking component 32 to extend or retract. When the locking component 32 extends, it can be inserted into the locking seat 23, and when the locking component 32 retracts, it is connected to the locking seat 23.

[0086] By adopting the above technical solution, the locking component 32 is easy to operate.

[0087] Please refer to the following: Figure 7 In one embodiment, the operating member 33 includes a screw 331 and a drive block 332 threadedly connected to the screw 331. The drive block 332 has a drive ramp 3321. The screw 331 drives the drive ramp 3321 to move along the axial direction of the screw 331. The drive ramp 3321 is used to drive the locking member 32 to extend and retract relative to the base 1.

[0088] By adopting the above technical solution, the structure of the operating component 33 is simple and easy to implement.

[0089] In one embodiment, the locking seat 23 is provided with a locking groove 231, and the locking member 32 is provided with a locking head 321 that matches the locking groove 231. The locking head 321 extends into the locking groove 231 when the locking member 32 extends relative to the base 1, and the locking head 321 locks the locking seat 23 when the locking member 32 retracts relative to the base 1.

[0090] Here, it can be understood that the shape and size of the locking groove 231 match the shape and size of the locking head 321, so that the locking head 321 can just lock the locking seat 23.

[0091] By adopting the above technical solution, it is beneficial to the locking engagement between the locking member 32 and the locking seat 23.

[0092] In one embodiment, the bottom of the substrate 2 is provided with a plurality of parallel-spaced locking grooves 22, and the positioning mechanism 3 further includes locking members 32 that correspond one-to-one with the locking grooves 22.

[0093] Here, it can be understood that the cooperation between multiple locking grooves 22 and locking members 32 can improve the stability of the substrate 2 during positioning. Specifically, multiple locking grooves 22 and locking members 32 are distributed at different positions on the substrate 2. For example, the lines connecting multiple locking members 32 form a triangle, which further improves the stability of the substrate 2 during positioning.

[0094] By adopting the above technical solution, the stability of the substrate 2 when positioned on the base 1 is improved.

[0095] In one embodiment, the base 1 is further provided with an abutment member 11 that abuts against the substrate 2 when the substrate 2 moves relative to the base 1 to a suitable position for 3D printing.

[0096] Here, it can be understood that the abutment 11 protrudes from the base 1, and the abutment 11 is located at the end in the mounting direction X, so that when the substrate 2 abuts against the abutment 11, the substrate 2 is just in the appropriate position for 3D printing, further improving the accuracy of the substrate 2 positioning.

[0097] By adopting the above technical solution, the accuracy of the positioning of substrate 2 has been further improved.

[0098] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-dimensional printing positioning device, applied in a three-dimensional printing grafting method, characterized in that, include: A base and a substrate detachably mounted on the base, the base being provided with a positioning mechanism for positioning the substrate, the substrate being used to hold powder and position the powder in a suitable position for 3D printing; The top of the substrate is provided with a printing surface for holding the powder, and the bottom of the substrate is provided with a positioning hole. The positioning mechanism includes a positioning member for inserting into the positioning hole to position the substrate. An elastic element is provided between the positioning element and the base to drive the positioning element into the positioning hole; The substrate is defined with an installation direction, and the bottom of the substrate is provided with a locking groove parallel to the installation direction. The positioning mechanism also includes a locking member that slides in the locking groove. The locking member slides into the locking groove along the installation direction. The positioning member is inserted into the positioning hole after the locking member slides to the installation position. The installation position corresponds to the substrate moving relative to the base to a suitable position for 3D printing.

2. The three-dimensional printing positioning device as described in claim 1, characterized in that, The locking slide is provided with a locking seat that is detachably connected to the locking member at the installation position, and the locking member is connected to the locking seat when it is moved to the installation position.

3. The three-dimensional printing positioning device as described in claim 2, characterized in that, An operating element is provided between the locking member and the base, the operating element being used to drive the locking member to extend or retract relative to the base to connect with the locking seat.

4. The three-dimensional printing positioning device as described in claim 3, characterized in that, The operating component includes a screw and a drive block threadedly connected to the screw. The drive block has a drive ramp. The screw drives the drive ramp to move along the axial direction of the screw. The drive ramp is used to extend and retract the locking component relative to the base.

5. The three-dimensional printing positioning device as described in claim 4, characterized in that, The locking seat is provided with a locking groove, and the locking member is provided with a locking head that matches the locking groove. When the locking member extends relative to the base, the locking head extends into the locking groove, and when the locking member retracts relative to the base, the locking head locks the locking seat.

6. The three-dimensional printing positioning device according to any one of claims 1 to 5, characterized in that, The bottom of the substrate is also provided with a plurality of parallel and spaced locking grooves, and the positioning mechanism also includes locking members that correspond one-to-one with the locking grooves.

7. The three-dimensional printing positioning device according to any one of claims 1 to 5, characterized in that, The base is also provided with an abutment member that abuts against the substrate when the substrate moves relative to the base to a suitable position for 3D printing.

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