Three-dimensional printing grafting method and three-dimensional printing positioning device

Abstract

The invention provides a three-dimensional printing grafting method and a three-dimensional printing positioning device. The three-dimensional printing grafting method comprises the following steps: primary powder stacking: providing a preset amount of powder; three-dimensional printing is conducted on the powder stacked for the first time, so that the powder forms a first workpiece unit, and the first workpiece unit is provided with a hollow structure and a powder discharging opening communicating with the hollow structure; powder discharging: discharging powder in the hollow structure; secondary powder stacking: stacking powder on the first workpiece unit; and secondary printing is conducted, specifically, three-dimensional printing is conducted on the powder of the second powder stack, so that the powder forms a second workpiece unit, the second workpiece unit covers the powder discharging opening, and the second workpiece unit and the first workpiece unit are connected to form a workpiece. By the adoption of the technical scheme, the large-size powder discharging opening can be formed in the first workpiece unit, powder in the hollow structure can be discharged easily, and powder residues are reduced; in addition, the second workpiece unit can cover the powder discharging opening, the powder discharging opening is prevented from being exposed, and the attractive degree of the workpiece is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of three-dimensional printing positioning devices, and more specifically, to a three-dimensional printing grafting method and a three-dimensional printing positioning device. Background Art

[0002] In the existing field of three-dimensional printing technology, in order to make the inside of a workpiece hollow, three-dimensional printing technology is used. The three-dimensional printing technology prints on a powder pile, stores powder in a preset hollow part, and then discharges the powder in the hollow part from a powder discharge port opened on the workpiece; however, the powder discharge port opened in the workpiece in the finished state is limited by the shape of the workpiece, resulting in a smaller powder discharge port, which is not conducive to powder discharge. At the same time, the powder discharge port opened in the workpiece in the finished state is difficult to cover, resulting in a decrease in the aesthetics of the workpiece. Summary of the invention

[0003] The purpose of the present invention is to provide a three-dimensional printing grafting method and a three-dimensional printing positioning device to solve the technical problems in the prior art that the three-dimensional printing method has an unclean powder discharge and a reduced aesthetics due to a too small powder discharge port.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] In a first aspect, a three-dimensional printing grafting method is provided, comprising:

[0006] One-time powder stacking: provides a preset amount of powder;

[0007] One-time printing: three-dimensionally printing the powder of the first powder pile so that the powder forms a first workpiece unit, wherein the first workpiece unit has a hollow structure and a powder discharge port connected to the hollow structure;

[0008] Powder discharge: discharge the powder in the hollow structure;

[0009] Secondary powder stacking: stacking powder on the first workpiece unit;

[0010] Secondary printing: three-dimensional printing of powder in the second pile 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 three-dimensional printing of the workpiece, there are fewer limitations 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 three-dimensionally printed into a second workpiece unit, so that the second workpiece unit can cover the powder discharge port to avoid exposure of the powder discharge port, thereby improving the aesthetics of the workpiece.

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

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

[0014] In a second aspect, a three-dimensional printing positioning device is provided, which is applied to a three-dimensional printing grafting method, comprising: a base, and a substrate detachably mounted on the base, wherein the base is provided with a positioning mechanism for positioning the substrate, and the substrate is used to carry powder and place the powder in a position suitable for three-dimensional printing.

[0015] By adopting the above technical solution, after one printing, the first workpiece unit together with the substrate is removed from the base to discharge powder, and the first workpiece unit after powder discharge is installed on the positioning mechanism again together with the substrate, and then a second powder stacking and a second printing are performed. Since both prints are positioned by the positioning mechanism, the deviation of the two printing positions is reduced, thereby improving the accuracy of three-dimensional printing and the yield rate of the workpiece.

[0016] In one embodiment, a printing surface for carrying the powder is provided on the top of the substrate, a positioning hole is provided on the bottom of the substrate, 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 mechanism can position the substrate.

[0018] In one embodiment, the substrate defines an installation direction, and the bottom of the substrate is also provided with a locking groove parallel to the installation direction. The positioning mechanism also includes a locking piece slidably arranged in the locking groove, and the locking piece slides into the locking groove along the installation direction. The positioning piece is inserted into the positioning hole after the locking piece slides to the installation position, and the installation position corresponds to the substrate moving relative to the base to a position suitable for three-dimensional 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 member, and the locking member and the positioning member jointly maintain the relative position of the substrate and the base.

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

[0021] By adopting the above technical solution, the positioning member is inserted into the positioning hole under the elastic force of the elastic member, so that the positioning member is automatically inserted into the positioning hole when the substrate moves to the installation position.

[0022] In one embodiment, a locking seat detachably connected to the locking member is provided at the installation position of the locking slot, 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 on the base.

[0024] In one embodiment, an operating member is provided between the locking member and the base, and the operating member is used to drive the locking member to extend and retract relative to the base so as to be connected to the locking seat.

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

[0026] In one embodiment, the operating member includes a screw and a drive block threadedly connected to the screw, the drive block has a drive bevel, the screw drives the drive bevel to move along the axial direction of the screw, and the drive bevel is used to drive the locking member to extend and retract relative to the base.

[0027] By adopting the above technical solution, the structure of the operating part 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 matching the locking groove, the locking head extends into the locking groove when the locking member extends relative to the base, and the locking head clamps the locking seat when the locking member retracts relative to the base.

[0029] The adoption of the above technical solution facilitates the locking cooperation between the locking member and the locking seat.

[0030] In one embodiment, a plurality of parallel and spaced locking grooves are further provided at the bottom of the base plate, and the positioning mechanism further comprises locking members corresponding one-to-one to 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 position suitable for three-dimensional printing.

[0033] By adopting the above technical solution, the accuracy of substrate positioning is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a three-dimensional structural diagram of a three-dimensional printing positioning device and a workpiece provided in an embodiment of the present invention.

[0036] Figure 2 Schematic diagram of the three-dimensional printing grafting method provided by the embodiment of the present invention Figure 1 .

[0037] Figure 3 Schematic diagram of the three-dimensional printing grafting method provided by the embodiment of the present invention Figure 2 .

[0038] Figure 4 Schematic diagram of the three-dimensional printing grafting method provided by the embodiment of the present invention Figure 3 .

[0039] Figure 5 It is an exploded view from one perspective of the three-dimensional printing positioning device provided by an embodiment of the present invention.

[0040] Figure 6 It is an exploded view from another perspective of the three-dimensional printing positioning device provided by an embodiment of the present invention.

[0041] Figure 7 It is a three-dimensional structural diagram of the operating member and the locking member provided in the embodiment of the present invention.

[0042] The reference numerals in the figures are:

[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 piece; X, installation direction; 22, locking slot; 32, locking piece; 23, locking seat; 33, operating piece; 331, screw rod; 332, driving block; 3321, driving slope; 231, locking slot; 321, locking head; 11, abutment piece. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate that a device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The specific implementation of the present invention is described in more detail below in conjunction with specific embodiments:

[0051] like Figure 1 As shown, a three-dimensional printing grafting method provided by an embodiment of the present invention is used for secondary printing of a workpiece with a hollow structure, so that the final product of the workpiece does not have a powder discharge port, thereby improving the aesthetics of the workpiece; at the same time, the cleanliness of the powder discharge of the workpiece during the processing is improved, and the residual powder of the hollow structure is reduced, which causes the yield of the workpiece to decrease; the following is described through a specific implementation method:

[0052] Please also read Figures 2 to 4 The three-dimensional printing grafting method provided in this embodiment includes the following steps:

[0053] One-time powder stacking: provides a preset amount of powder;

[0054] One-time printing: three-dimensionally printing the powder of the first powder pile, so that the powder forms a first workpiece unit 10, and the first workpiece unit 10 has a hollow structure and a powder discharge port 101 connected to the hollow structure;

[0055] Powder discharge: discharge the powder in the hollow structure;

[0056] Secondary powder stacking: stacking powder on the first workpiece unit 10;

[0057] Secondary printing: three-dimensionally printing the powder of the second pile of powder, 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 a powder stacking process refers to stacking a preset amount of powder at a position to be three-dimensionally printed, such as a substrate 2 for carrying powder; specifically, the preset amount of powder matches the weight and volume of the workpiece 100 to be printed, so that the powder at the preset position can be printed into a workpiece 100 of a 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 printing refers to three-dimensional printing of powder; three-dimensional printing is performed on the powder of the first powder pile, so that the powder forms a first workpiece unit 10, wherein a hollow structure is formed inside the first workpiece unit 10, and the first workpiece unit 10 also forms a powder discharge port 101 connected to the hollow structure, and 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 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 is used to stack a preset amount of powder on 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 of the second powder pile is performed 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 three-dimensional printing grafting method provided in this embodiment is as follows:

[0064] A preset amount of powder is piled on the substrate 2, and the powder is three-dimensionally printed by a three-dimensional printing device, that is, the powder is formed into a first workpiece unit 10, wherein a hollow structure and a powder discharge port 101 connected to the hollow structure are formed on the first workpiece unit 10, and the residual powder in the hollow structure is discharged from the powder discharge port 101 after one printing, and the first workpiece unit 10 is fixed on the substrate 2, and the powder is piled on the first workpiece unit 10, and the powder is three-dimensionally printed by a three-dimensional printing device to form the powder into a second workpiece unit 20. Since the powder is directly three-dimensionally 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, and the second workpiece unit 20 can be set to cover the position of the powder discharge port 101, so that the powder discharge port 101 is hidden.

[0065] By adopting the above technical solution, since the workpiece 100 is three-dimensionally printed twice, there are fewer limitations 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 beneficial 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 three-dimensionally printed into the second workpiece unit 20, so that the second workpiece unit 20 can cover the powder discharge port 101 to avoid exposure of the powder discharge port 101, thereby improving the aesthetics of the workpiece 100.

[0066] In one embodiment, in the first printing step, the first workpiece unit 10 further has a cover plate 30 for covering the powder discharge port 101 ; in the second powder stacking step, the cover plate 30 covers 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 the powder from falling into the internal structure from the powder discharge port 101 again during the secondary powder stacking, thereby 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 the 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 closed 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 of the secondary powder stacking will not fall into the internal structure from the powder discharge port 101 again, reducing the possibility of internal powder reference.

[0069] Please also read Figure 5In the second aspect, a three-dimensional printing positioning device 200 is provided, which is applied to a three-dimensional printing grafting method, and includes: a base 1, a substrate 2 detachably mounted on the base 1, a positioning mechanism 3 for positioning the substrate 2 is provided on the base 1, and the substrate 2 is used to carry powder and place the powder in a suitable position for three-dimensional printing.

[0070] Here, it can be understood that the base 1 refers to a base body for carrying the substrate 2, and a positioning mechanism 3 is provided on the base 1, and the positioning mechanism 3 is used to position the substrate 2 so that the substrate 2 is located at a position suitable for three-dimensional printing; the substrate 2 refers to a plate-like component for carrying powder, and since the positioning mechanism 3 positions the substrate 2 at a position suitable for three-dimensional printing, the powder on the substrate 2 is also located at a position suitable for three-dimensional printing;

[0071] By adopting the above technical solution, after one printing, the first workpiece unit 10 together with the substrate 2 is removed from the base 1 to discharge powder, and the first workpiece unit 10 after powder discharge together with the substrate 2 is installed on the positioning mechanism 3 again, and then a second powder stacking and a second printing are performed. Since both printings are positioned by the positioning mechanism 3, the deviation of the two printing positions is reduced, thereby improving the accuracy of three-dimensional printing and the yield rate of the workpiece 100.

[0072] Please also read Figure 6 In one embodiment, a printing surface for carrying powder is provided on the top of the substrate 2 , a positioning hole 21 is provided on the bottom of the substrate 2 , and 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 relative top and bottom, wherein the top 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 piece 31 inserted into the positioning hole 21. The positioning hole 21 interacts with the positioning piece 31 to locate the position of the substrate 2.

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

[0075] By adopting the above technical solution, the positioning mechanism 3 can position the substrate 2.

[0076] In one embodiment, the substrate 2 defines 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 piece 32 slidably arranged in the locking groove 22. The locking piece 32 slides into the locking groove 22 along the installation direction X. The positioning piece 31 is inserted into the positioning hole 21 after the locking piece 32 slides to the installation position. The installation position corresponds to the substrate 2 moving relative to the base 1 to a suitable three-dimensional printing position.

[0077] By adopting the above technical solution, the directional movement between the substrate 2 and the base 1 is achieved 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 substrate 2 and the base 1.

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

[0079] Here, it can be understood that the elastic member refers to a component used to provide elastic force to the positioning member 31, and the elastic member includes but is not limited to a spring; the two ends of the elastic member are respectively abutted against the positioning member 31 and the base 1, and the elastic force of the elastic member drives the positioning member 31 to extend relative to the base 1. When the positioning member 31 moves to be opposite to the positioning hole 21, the elastic member drives the positioning member 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 moves to the installation position.

[0081] In one embodiment, a locking seat 23 detachably connected to a locking member 32 is provided at the installation position of the locking slot 22 , and the locking member 32 is connected to the locking seat 23 when it is moved to the installation 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, so as to achieve locking of the base plate 2 on the base 1.

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

[0084] In one embodiment, an operating member 33 is provided between the locking member 32 and the base 1 , and the operating member 33 is used to drive the locking member 32 to extend and retract relative to the base 1 so as to be connected to the locking seat 23 .

[0085] Here, it can be understood that the user manipulates the operating member 33 to drive the locking member 32 to extend and retract. When the locking member 32 is extended, it can be inserted into the locking seat 23, and when the locking member 32 is retracted, it is connected to the locking seat 23.

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

[0087] Please also read Figure 7 In one embodiment, the operating member 33 includes a screw rod 331 and a driving block 332 threadedly connected to the screw rod 331 , the driving block 332 has a driving inclined surface 3321 , the screw rod 331 drives the driving inclined surface 3321 to move along the axial direction of the screw rod 331 , and the driving inclined surface 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 member 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 matching the locking groove 231. The locking head 321 extends into the locking groove 231 when the locking member 32 is extended relative to the base 1, and the locking head 321 clamps the locking seat 23 when the locking member 32 is retracted 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 clamp the locking seat 23 .

[0091] By adopting the above technical solution, the locking cooperation between the locking member 32 and the locking seat 23 is facilitated.

[0092] In one embodiment, a plurality of parallel and spaced locking grooves 22 are further provided at the bottom of the base plate 2 , and the positioning mechanism 3 further includes locking members 32 corresponding one-to-one to 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 when it is positioned. Specifically, multiple locking grooves 22 and locking members 32 are distributed at different positions of the substrate 2. For example, the connecting line of multiple locking members 32 forms a triangle. In this way, the stability of the substrate 2 when it is positioned is further improved.

[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 which abuts against the substrate 2 when the substrate 2 moves relative to the base 1 to a position suitable for three-dimensional printing.

[0096] Here, it can be understood that the abutment 11 is protruded on the base 1, and the abutment 11 is located at the end in the installation direction X, so that when the substrate 2 abuts against the abutment 11, the substrate 2 is just located at a position suitable for three-dimensional printing, further improving the accuracy of positioning the substrate 2.

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

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

Claims

1. A three-dimensional printing grafting method, characterized in that: The following steps are involved: One-time powder stacking: provides a preset amount of powder; One-time printing: three-dimensionally printing the powder of the first powder pile so that the powder forms a first workpiece unit, wherein the first workpiece unit has a hollow structure and a powder discharge port connected to the hollow structure; Powder discharge: discharge the powder in the hollow structure; Secondary powder stacking: stacking powder on the first workpiece unit; Secondary printing: three-dimensional printing of powder in the second pile 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.

2. The three-dimensional printing grafting method according to claim 1, characterized in that: In the first printing step, the first workpiece unit is further formed with a cover plate for covering the powder discharge port; in the second powder stacking step, the cover plate covers the powder discharge port.

3. A three-dimensional printing positioning device, used in a three-dimensional printing grafting method, characterized in that: include: A base, a substrate detachably mounted on the base, a positioning mechanism for positioning the substrate is provided on the base, and the substrate is used to carry powder and position the powder at a position suitable for three-dimensional printing.

4. The three-dimensional printing positioning device according to claim 3, characterized in that: The top of the substrate is provided with a printing surface for carrying the powder, the bottom of the substrate is provided with a positioning hole, and the positioning mechanism includes a positioning piece for inserting into the positioning hole to position the substrate.

5. The three-dimensional printing positioning device according to claim 4, characterized in that: The base plate defines an installation direction, and a locking groove parallel to the installation direction is provided at the bottom of the base plate. The positioning mechanism also includes a locking piece slidably arranged in the locking groove, and the locking piece slides into the locking groove along the installation direction. The positioning piece is inserted into the positioning hole after the locking piece slides to the installation position, and the installation position corresponds to the base moving relative to the base to a position suitable for three-dimensional printing.

6. The three-dimensional printing positioning device according to claim 5, characterized in that: An elastic member for driving the positioning member to be inserted into the positioning hole is provided between the positioning member and the base.

7. The three-dimensional printing positioning device according to claim 5, characterized in that: A locking seat detachably connected to the locking member is provided at the installation position of the locking slide groove, and the locking member is connected to the locking seat when it is moved to the installation position.

8. The three-dimensional printing positioning device according to claim 7, characterized in that: An operating member is provided between the locking member and the base, and the operating member is used to drive the locking member to extend and retract relative to the base so as to be connected with the locking seat.

9. The three-dimensional printing positioning device according to claim 8, characterized in that: The operating member includes a screw and a driving block threadably connected to the screw, the driving block has a driving bevel, the screw drives the driving bevel to move along the axial direction of the screw, and the driving bevel is used to drive the locking member to extend and retract relative to the base.

10. The three-dimensional printing positioning device according to claim 9, characterized in that: The locking seat is provided with a locking groove, and the locking member is provided with a locking head matching the locking groove. When the locking member is extended relative to the base, the locking head extends into the locking groove, and when the locking member is retracted relative to the base, the locking head clamps the locking seat.

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