Locking device of forming platform and 3D printer

Abstract

The utility model provides a locking device of a forming platform and a 3D printer, the locking device of the forming platform comprises a locking piece, the locking piece comprises a fixing frame, a fixing plate and a moving block, the moving block is arranged on the fixing frame, the fixing plate is provided with a mounting groove, and the mounting groove is provided with an opening; the platform fixing piece is used for being connected with a forming platform and extends into the mounting groove; the fixing plate is provided with a first clamping part, the first end of the platform fixing piece is provided with a second clamping part, and the moving block is provided with a locking position where the second end of the platform fixing piece abuts against and an unlocking position where the second end of the platform fixing piece is separated from each other. Through the technical scheme provided by the invention, the problem that the quality problem of the surface of a printed piece occurs due to the fact that the forming platform tilts and then shakes when a rotating cam is used for driving a pressing block to move downwards to press the forming platform in the related technology can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, and in particular to a locking device for a molding platform and a 3D printer. Background Art

[0002] 3D printing technology is to manufacture three-dimensional entities in a layer-by-layer manner through 3D printing equipment based on the three-dimensional model data of the object. 3D printing technology can overcome special structural obstacles that cannot be achieved by traditional mechanical processing and realize the simplified production of any complex structural parts. Current 3D printing technologies include laser stereolithography (SLA), digital light processing (DLP), liquid crystal display technology (LCD), fused deposition modeling (FDM), selective laser sintering (SLS), etc. Among them, the 3D printer uses a light source to project light to the bottom of the transparent tray, so that the photocurable material between the molding platform and the bottom of the tray undergoes a polymerization reaction to obtain a cured sheet, which is bonded to the molding platform. By keeping the molding platform away from the bottom of the tray and making the light source project light to the bottom of the tray intermittently or uninterruptedly, the stacked cured sheets are cured layer by layer and finally form a three-dimensional solid print.

[0003] In the related art, a rotating cam is arranged to rotate and drive the pressing block to move downward, so that the pressing block applies positive pressure to the forming platform, thereby ensuring that the forming platform works stably.

[0004] However, in the related art, a rotating cam is used to drive the pressing block to move downward and press the forming platform, which may cause the forming platform to tilt, thereby causing the forming platform to shake, resulting in quality problems on the surface of the printed part. Utility Model Content

[0005] The utility model provides a locking device for a molding platform and a 3D printer, so as to solve the problem in the related art that a molding platform is tilted when a pressing block is driven by a rotating cam to move downward and press the molding platform, which causes the molding platform to shake and leads to quality problems on the surface of the printed part.

[0006] According to one aspect of the utility model, a locking device for a molding platform is provided, and the locking device for the molding platform comprises: a locking member, comprising a fixed frame, a fixed plate and a movable block, the movable block is movably arranged on the fixed frame, the fixed plate has a mounting groove, and the mounting groove has an opening; a platform fixing member is used to connect with the molding platform, and the platform fixing member can extend into the mounting groove through the opening; the fixed plate has a first clamping portion, the first end of the platform fixing member has a second clamping portion that is clamped and matched with the first clamping portion, and the movable block has a locking position in which the second end of the platform fixing member abuts and an unlocking position in which the second end of the platform fixing member is separated.

[0007] Furthermore, the first clamping portion includes a clamping groove, and the second clamping portion includes a wedge block, and the wedge block extends into the clamping groove and is clamped and matched with the clamping groove.

[0008] Furthermore, the moving block has a first limiting slope, and the second end of the platform fixing piece has a second limiting slope. When the moving block is in the locking position, the first limiting slope abuts against the second limiting slope, and when the moving block is in the unlocking position, the first limiting slope is separated from the second limiting slope.

[0009] Further, the moving block includes a base and a pressure block arranged on the base, the pressure block is passed through the fixed frame and is slidably connected to the fixed frame, the lower end of the pressure block passes through the fixed frame, when the moving block is in the locked position, the lower end of the pressure block abuts against the second end of the platform fixing member, and when the moving block is in the unlocked position, the lower end of the pressure block is separated from the second end of the platform fixing member; and / or, a first spring is arranged between the fixed frame and the moving block, the first end of the first spring abuts against the lower end of the moving block, and the second end of the first spring abuts against the fixed frame.

[0010] Furthermore, the fixing plate has a lifting mechanism connection portion, the fixing frame extends vertically, and the fixing plate extends horizontally and is connected to the lower end of the fixing frame.

[0011] Furthermore, a sliding guide structure is provided between the moving block and the fixing frame.

[0012] Furthermore, a guide block is arranged on the moving block, the guide block is slidably arranged on the moving block in a transverse direction, and the sliding guide structure is arranged between the guide block and the fixed frame.

[0013] Further, the sliding guide structure includes a first guide bevel and a second guide bevel, the first guide bevel is arranged on the side wall of the guide block facing the fixed frame, and the second guide bevel is arranged on the side wall of the fixed frame facing the guide block, and the first guide bevel is in contact with the second guide bevel; and / or, a first screw and a second spring are arranged on the moving block, the first screw is passed through the guide block and is threadedly connected to the moving block, and the second spring is located between the guide block and the moving block.

[0014] Furthermore, the moving block includes a first lifting block and a second lifting block, the first lifting block is arranged above the second lifting block, the moving block also includes a second screw and a third spring, the second screw is passed through the first lifting block and is threadedly connected to the second lifting block, the third spring is sleeved on the second screw, the first end of the third spring abuts against the first lifting block, and the second end of the third spring abuts against the second lifting block, and a driving member is provided on the fixed frame, which is drivingly connected to the first lifting block to drive the first lifting block to rise and fall relative to the fixed frame.

[0015] Furthermore, the locking device of the forming platform also includes a driving member, which includes a rotating shaft, a handle and a rotating cam. The rotating shaft is laterally inserted into the fixed frame, the handle is connected to the rotating shaft, the rotating cam is arranged on the rotating shaft and abuts against the upper end of the moving block, the handle drives the rotating shaft to rotate, and the rotating shaft uses the rotating cam to drive the moving block to move from the unlocking position to the locking position.

[0016] Furthermore, the locking device of the molding platform also includes a position detection member for detecting the position of the handle.

[0017] Furthermore, the platform fixing member includes a first locking block and a second locking block which are arranged at intervals, and the first locking block and the second locking block are used to extend into the installation groove.

[0018] According to another aspect of the utility model, a 3D printer is provided, comprising: a lifting mechanism; a molding platform; a locking device, wherein the molding platform is arranged on the locking device, the lifting mechanism is connected to the lifting mechanism connecting portion of the locking device, and the locking device is the locking device provided above.

[0019] The technical solution of the utility model is applied, and the locking device of the molding platform includes a locking member and a platform fixing member, the fixing frame on the locking member is connected to the fixing plate, the moving block is movably arranged on the fixing frame, the platform fixing member is connected to the molding platform, the fixing plate is provided with a mounting groove, the mounting groove has an opening, so that the platform fixing member can extend into the mounting groove through the opening, the fixing plate has a first clamping portion, and the first end of the locking member has a second clamping portion, and when the platform fixing member extends into the mounting groove, the first clamping portion and the second clamping portion are clamped and matched, so that the fixing member The plate is clamped with the platform fixing part, and then when the moving block moves to the locking position, the moving block abuts against the second end of the platform fixing part, and because when the fixing plate is clamped with the platform fixing part, the moving block has a mutual abutting force on the platform fixing part, so that the platform fixing part and the fixing plate are clamped and fixed under the action of the force, avoiding the shaking of the molding platform, ensuring that the locking part is locked with the platform fixing part, and when the moving block switches from the locking position to the unlocking position, the moving block is separated from the platform fixing part, and then it is easy to separate the locking part from the platform fixing part. With the above structure, the first clamping part of the fixing plate is clamped and fixed with the second clamping part of the platform fixing part, when the moving block moves to the locking position, the problem of the molding platform being lifted can be avoided, and the shaking of the molding platform can also be avoided, thereby ensuring the printing quality of the printed part and improving the structural reliability of the locking device of the molding platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A schematic diagram showing the structure of a locking device of a molding platform provided in an embodiment of the utility model is shown;

[0022] Figure 2 A schematic diagram showing the separation of the locking member and the platform fixing member provided in an embodiment of the utility model is shown;

[0023] Figure 3 A front view of a locking device of a molding platform provided in an embodiment of the utility model is shown;

[0024] Figure 4 Shows Figure 3 Sectional view at AA in the middle;

[0025] Figure 5 A schematic diagram of the structure of a locking member provided in an embodiment of the utility model is shown;

[0026] Figure 6 An exploded view of a moving block of a locking member provided in an embodiment of the utility model is shown;

[0027] Figure 7 A schematic diagram of the structure of a platform fixing member provided in an embodiment of the utility model is shown;

[0028] Figure 8 A schematic structural diagram of a fixing plate of a locking member provided in an embodiment of the utility model is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Locking member; 11. Fixing frame; 111. Driving member; 1111. Rotating shaft; 1112. Handle; 1113. Rotating cam; 12. Fixing plate; 121. First clamping portion; 1211. Clamping groove; 13. Moving block; 131. First limiting inclined plane; 132. Base; 133. Pressing block; 134. First spring; 135. First screw; 136. Second spring; 137. First lifting block; 138. Second lifting block; 14. Sliding guide structure; 141. First guiding inclined plane; 142. Second guiding inclined plane; 15. Guide block; 16. Second screw; 17. Third spring;

[0031] 20. Platform fixing member; 21. Second clamping portion; 211. Wedge block; 22. Second limiting inclined surface; 23. First locking block; 24. Second locking block;

[0032] 30. Position detection parts;

[0033] 40. Molding platform;

[0034] 50. Locking device. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figures 1 to 8 As shown, an embodiment of the utility model provides a locking device for a molding platform, which includes a locking member 10 and a platform fixing member 20. The locking member 10 includes a fixing frame 11, a fixing plate 12 and a moving block 13. The moving block 13 is movably arranged on the fixing frame 11. The fixing plate 12 has a mounting groove, and the mounting groove has an opening. The platform fixing member 20 is used to connect with the molding platform, and the platform fixing member 20 can extend into the mounting groove through the opening. The fixing plate 12 has a first clamping portion 121, and the first end of the platform fixing member 20 has a second clamping portion 21 that is clamped and matched with the first clamping portion 121. The moving block 13 has a locking position in which the second end of the platform fixing member 20 abuts and an unlocking position in which the second end of the platform fixing member 20 is separated.

[0037] The locking device of the molding platform provided by the present embodiment is applied, and the locking device of the molding platform includes a locking member 10 and a platform fixing member 20. The fixing frame 11 on the locking member 10 is connected to the fixing plate 12. The moving block 13 is movably arranged on the fixing frame 11. The platform fixing member 20 is connected to the molding platform. The fixing plate 12 is provided with a mounting groove, and the mounting groove has an opening, so that the platform fixing member 20 can extend into the mounting groove through the opening. The fixing plate 12 has a first clamping portion 121, and the first end of the locking member 10 has a second clamping portion 21. When the platform fixing member 20 extends into the mounting groove, the first clamping portion 121 and the second clamping portion 21 are clamped and matched, so that The fixing plate 12 is clamped with the platform fixing part 20, and then when the moving block 13 moves to the locking position, the moving block 13 abuts against the second end of the platform fixing part 20, and because when the fixing plate 12 is clamped with the platform fixing part 20, the moving block 13 has a mutual abutment force on the platform fixing part 20, so that the platform fixing part 20 and the fixing plate 12 are clamped and fixed under the action of the force, avoiding the shaking of the forming platform and ensuring that the locking part 10 is locked with the platform fixing part 20. When the moving block 13 switches from the locking position to the unlocking position, the moving block 13 is separated from the platform fixing part 20, which makes it easy to separate the locking part 10 from the platform fixing part 20. By adopting the above structure, the first clamping portion 121 of the fixing plate 12 is clamped and fixed with the second clamping portion 21 of the platform fixing member 20. When the moving block 13 moves to the locking position, the problem of the molding platform being lifted up can be avoided, and the shaking of the molding platform can also be avoided, thereby ensuring the printing quality of the printed part and improving the structural reliability of the locking device of the molding platform.

[0038] like Figure 2 , Figure 4 , Figure 7 as well as Figure 8As shown, the first clamping portion 121 includes a clamping groove 1211, and the second clamping portion 21 includes a wedge block 211, and the wedge block 211 extends into the clamping groove 1211 and is clamped with the clamping groove 1211. With the above structure, the first clamping portion 121 is set as the clamping groove 1211, and the second clamping portion 21 is a wedge block 211 set on the platform fixing member 20, so that when the fixing plate 12 extends into the installation groove, the clamping groove 1211 on the fixing plate 12 is clamped with the wedge block 211 on the platform fixing member 20, so that the platform fixing member 20 can be prevented from falling off from the fixing plate 12, and the locking member 10 and the platform fixing member 20 can be installed easily. In addition, when the moving block 13 moves downward, the moving block 13 abuts against the second end of the platform fixing piece 20, and then the moving block 13 applies a force to the platform fixing piece 20. Since the fixing plate 12 and the platform fixing piece 20 are clamped together, it can be ensured that under the action of the moving block 13, there is still an abutting force when the fixing plate 12 and the platform fixing piece 20 are clamped together. This can ensure that the locking piece 10 and the platform fixing piece 20 are clamped stably and avoid the locking piece 10 and the platform fixing piece 20 from separating from each other. This can ensure that the clamping is firm, avoid the platform fixing piece 20 from shaking, and also ensure the stability of the forming platform.

[0039] It should be noted that a third limiting slope is provided on the fixing plate 12, and a fourth limiting slope is provided on the first end of the platform fixing component 20. When the fixing plate 12 extends into the installation groove of the platform fixing component 20, the third limiting slope of the fixing plate 12 is fitted with the fourth limiting slope of the platform fixing component 20, and the angle between the third limiting slope and the horizontal plane and the angle between the fourth limiting slope and the horizontal plane are both obtuse angles, which can prevent the platform fixing component 20 from detaching from the fixing plate 12 and ensure that the fixing plate 12 and the platform fixing component 20 are clamped and fixed to each other.

[0040] like Figure 4As shown, the moving block 13 has a first limiting slope 131, and the second end of the platform fixing member 20 has a second limiting slope 22. When the moving block 13 is in the locking position, the first limiting slope 131 abuts against the second limiting slope 22. When the moving block 13 is in the unlocking position, the first limiting slope 131 is separated from the second limiting slope 22. By adopting the above structure, by setting the first limiting slope 131 on the moving block 13, the second end of the platform fixing member 20 has the second limiting slope 22, and then when the moving block 13 moves downward, the moving block 13 and the second end of the platform fixing member 20 are abutted, so that the first limiting slope 131 can abut against the second limiting slope 22, so that the force of the moving block 13 on the platform fixing member 20 can be decomposed into a vertical downward force and a horizontal force under the action of the first limiting slope 131 and the second limiting slope 22. In this way, when it is decomposed into a vertical downward force, it can ensure that the platform fixing member 20 and the fixed plate 12 are abutted and fixed, and when it is decomposed into a horizontal force, it can ensure that the wedge block 211 of the platform fixing member 20 and the clamping groove 1211 of the fixed plate 12 are clamped and fixed. This can not only prevent the platform fixing member 20 from tilting, but also ensure the stability of the forming platform connected to the platform fixing member 20.

[0041] It should be noted that in this embodiment, the angle between the first limiting slope 131 and the horizontal plane and the angle between the second limiting slope 22 and the horizontal plane are both set to acute angles, which can ensure that the moving block 13 is abutted against the platform fixing member 20, and the first limiting slope 131 is abutted against the second limiting slope 22 to achieve the function of fixing the platform fixing member 20.

[0042] like Figure 2 , Figure 4 as well as Figure 5As shown, the moving block 13 includes a base 132 and a pressure block 133 arranged on the base 132. The pressure block 133 is penetrated through the fixing frame 11 and is slidably connected with the fixing frame 11. The lower end of the pressure block 133 passes through the fixing frame 11. When the moving block 13 is in the locking position, the lower end of the pressure block 133 abuts against the second end of the platform fixing member 20. When the moving block 13 is in the unlocking position, the lower end of the pressure block 133 is separated from the second end of the platform fixing member 20. By adopting the above structure, by setting the base 132 and the pressure block 133, the pressure block 133 can be passed through the fixed frame 11 and slidably connected with the fixed frame 11. When the movable block 13 moves vertically downward and is in the locking position, the lower end of the pressure block 133 passes through the fixed frame 11 and can slide relative to the fixed frame 11, so that the lower end of the pressure block 133 can be abutted against the second end of the platform fixing member 20. When the movable block 13 moves vertically upward and switches from the locking position to the unlocking position, the lower end of the pressure block 133 is separated from the second end of the platform fixing member 20, ensuring that the movable block 13 can be abutted and fixed with the platform fixing member 20 under the action of the pressure block 133.

[0043] It should be noted that a moving block 13 is penetrated at the upper end of the pressing block 133, and a third screw is provided on the moving block 13. The third screw penetrates the moving block 13 and is threadedly connected to the pressing block 133, so that it is convenient to fix the pressing block 133 on the moving block 13 and facilitate the pressing block 133 to move with the moving block 13.

[0044] In this embodiment, the first limiting slope 131 is arranged at the lower end of the pressing block 133, and the second limiting slope 22 is arranged at the second end of the platform fixing member 20, so that when the pressing block 133 moves downward and abuts against the second end of the platform fixing member 20, the first limiting slope 131 abuts against the second limiting slope 22.

[0045] like Figure 5 and Figure 6 As shown, a first spring 134 is provided between the fixed frame 11 and the moving block 13, the first end of the first spring 134 abuts against the lower end of the moving block 13, and the second end of the first spring 134 abuts against the fixed frame 11. With the above structure, by providing the first spring 134 between the fixed frame 11 and the moving block 13, the moving block 13 can be reset under the action of the first spring 134, and then when the moving block 13 is in the locked position, the moving block 13 moves downward to compress the first spring 134, and when the moving block 13 is in the unlocked position, the moving block 13 is reset under the action of the first spring 134.

[0046] In this embodiment, the fixing plate 12 has a lifting mechanism connection part, the fixing frame 11 extends vertically, and the fixing plate 12 extends horizontally and is connected to the lower end of the fixing frame 11. With the above structure, the lifting mechanism connection part is provided on the fixing plate 12, and the platform fixing member 20 extends into the installation groove of the locking member 10, so that the platform fixing member 20 can be locked and fixed, and under the action of the lifting mechanism connection part, the locking device is connected to the lifting mechanism of the 3D printer, so that the molding platform can be driven to lift and move, which is convenient for 3D printing operation.

[0047] like Figure 5 and Figure 6 As shown, a sliding guide structure 14 is provided between the moving block 13 and the fixed frame 11. With the above structure, by providing the sliding guide structure 14, the problem of the moving block 13 being stuck can be avoided when the moving block 13 moves, and the moving block 13 can be moved along the fixed frame 11 under the action of the sliding guide structure 14.

[0048] like Figure 5 and Figure 6 As shown, the moving block 13 is provided with a guide block 15, the guide block 15 is slidably arranged on the moving block 13 in the transverse direction, and the sliding guide structure 14 is arranged between the guide block 15 and the fixed frame 11. With the above structure, by arranging the guide block 15 on the moving block 13, the guide block 15 can be movably arranged on the moving block 13 in the transverse direction, so that the moving block 13 can play a role of sliding guide under the action of the guide block 15.

[0049] like Figure 5 and Figure 6 As shown, the sliding guide structure 14 includes a first guiding bevel 141 and a second guiding bevel 142. The first guiding bevel 141 is arranged on the side wall of the guide block 15 facing the fixed frame 11, and the second guiding bevel 142 is arranged on the side wall of the fixed frame 11 facing the guide block 15. The first guiding bevel 141 is in contact with the second guiding bevel 142. By adopting the above structure, a first guide bevel 141 is provided on the side wall of the guide block 15 facing the fixed frame 11, and a second guide bevel 142 is provided on the side wall of the fixed frame 11 facing the guide block 15, so that the first guide bevel 141 can play a role of sliding guide under the action of the second guide bevel 142, so that when the moving block 13 moves downward, the guide block 15 also moves downward, and the first guide bevel 141 and the second guide bevel 142 are slidably matched, so that the guide block 15 moves laterally toward the direction close to the moving block 13, and when the moving block 13 moves upward, the guide block 15 moves laterally toward the direction away from the moving block 13, so that the moving block 13 can be prevented from getting stuck.

[0050] like Figure 6As shown, the moving block 13 is provided with a first screw 135 and a second spring 136, the first screw 135 is passed through the guide block 15 and is threadedly connected to the moving block 13, and the second spring 136 is located between the guide block 15 and the moving block 13. With the above structure, by using the first screw 135 passed through the guide block 15 and threadedly connected to the moving block 13, the second spring 136 is sleeved on the first screw 135 and is located between the guide block 15 and the moving block 13, so that when the guide block 15 moves in the direction away from the moving block 13 in the lateral direction, the second spring 136 can reset the guide block 15, ensuring that the guide block 15 can slide with the fixed frame 11.

[0051] like Figure 6 As shown, the moving block 13 includes a first lifting block 137 and a second lifting block 138. The first lifting block 137 is arranged above the second lifting block 138. The moving block 13 also includes a second screw 16 and a third spring 17. The second screw 16 is penetrated by the first lifting block 137 and is threadedly connected with the second lifting block 138. The third spring 17 is sleeved on the second screw 16. The first end of the third spring 17 abuts against the first lifting block 137, and the second end of the third spring 17 abuts against the second lifting block 138. A driving member 111 is provided on the fixed frame 11. The driving member 111 is drivingly connected to the first lifting block 137 to drive the first lifting block 137 to rise and fall relative to the fixed frame 11. With the above structure, a first lifting block 137 and a second lifting block 138 are provided, a second screw 16 and a third spring 17 are provided between the first lifting block 137 and the second lifting block 138, the second screw 16 is sequentially passed through the first lifting block 137 and the second lifting block 138 and is threadedly connected with the second lifting block 138, the third spring 17 can play a role of elastic buffering, and a driving member 111 is provided on the fixing frame 11, the driving member 111 can drive the first lifting block 137 to move downward, and under the action of the third spring 17, the second lifting block 138 moves downward at the same time, so that the locking member 10 can be locked with the platform fixing member 20, so that the moving block 13 can be easily driven to move under the action of the driving member 111.

[0052] like Figures 1 to 5As shown, the locking device of the forming platform also includes a driving member 111, which includes a rotating shaft 1111, a handle 1112 and a rotating cam 1113. The rotating shaft 1111 is horizontally penetrated through the fixed frame 11, the handle 1112 is connected to the rotating shaft 1111, the rotating cam 1113 is arranged on the rotating shaft 1111 and abuts against the upper end of the moving block 13, the handle 1112 drives the rotating shaft 1111 to rotate, and the rotating shaft 1111 uses the rotating cam 1113 to drive the moving block 13 to move from the unlocking position to the locking position. By adopting the above structure, the rotating shaft 1111 is rotatably arranged on the fixed frame 11 in the horizontal direction, and the handle 1112 is connected to the rotating shaft 1111, so that it is convenient to drive the rotating shaft 1111 to rotate by controlling the handle 1112, and a rotating cam 1113 is provided on the rotating shaft 1111. When the rotating shaft 1111 rotates, the rotating cam 1113 can abut against the moving block 13. In this way, when the rotating cam 1113 rotates, it can drive the moving block 13 to move vertically downward and then put the moving block 13 in a locking position, so that the locking member 10 is locked with the platform fixing member 20, so that the driving method is simple and easy to control.

[0053] It should be noted that, in other embodiments, the driving member 111 can also be a crank slider mechanism, which makes it easy to achieve quick locking and quick disassembly through the crank; or the rotating cam 1113 can be replaced with a knob-type threaded handle, which can facilitate the lifting and lowering of the moving block 13 without setting the rotating cam 1113 and the first spring 134.

[0054] like Figure 5 As shown, the locking device of the molding platform also includes a position detection member 30 for detecting the position of the handle 1112. With the above structure, by providing the position detection member 30, it is convenient to detect the position of the handle 1112, which is used to detect whether it is locked in place.

[0055] It should be noted that, in other embodiments, a grating sensor such as a code disk is used to record the number of rotations to achieve mechanical and electrical locking reminders.

[0056] like Figure 7 As shown, the platform fixing member 20 includes a first locking block 23 and a second locking block 24 arranged at intervals, and the first locking block 23 and the second locking block 24 are used to extend into the installation groove. With the above structure, by arranging the first locking block 23 and the second locking block 24, it is convenient to extend the first locking block 23 and the second locking block 24 into the installation groove of the fixing plate 12.

[0057] Another embodiment of the utility model provides a 3D printer, which includes a lifting mechanism, a molding platform 40 and a locking device 50. The molding platform 40 is arranged on the locking device 50, and the lifting mechanism is connected to the lifting mechanism connecting portion of the locking device 50. The locking device 50 is the locking device provided above. With the above structure, the molding platform is connected to the locking device 50, and the lifting mechanism is connected to the lifting mechanism connecting portion of the locking device 50, which makes it easy to lock the molding platform and drive the molding platform to lift and lower.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0059] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0060] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0063] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A locking device for a molding platform, characterized in that: The locking device of the molding platform comprises: A locking member (10) comprises a fixing frame (11), a fixing plate (12) and a moving block (13), wherein the moving block (13) is movably arranged on the fixing frame (11), and the fixing plate (12) has a mounting groove, and the mounting groove has an opening; A platform fixing member (20) is used to be connected to the molding platform, and the platform fixing member (20) can extend into the installation groove through the opening; The fixing plate (12) has a first clamping portion (121), the first end of the platform fixing member (20) has a second clamping portion (21) clamped with the first clamping portion (121), and the moving block (13) has a locking position abutting against the second end of the platform fixing member (20) and an unlocking position separated from the second end of the platform fixing member (20).

2. The locking device of the molding platform according to claim 1, characterized in that: The first clamping portion (121) comprises a clamping groove (1211), and the second clamping portion (21) comprises a wedge block (211), wherein the wedge block (211) extends into the clamping groove (1211) and is clamped and matched with the clamping groove (1211).

3. The locking device of the molding platform according to claim 1, characterized in that: The moving block (13) has a first limiting inclined surface (131), and the second end of the platform fixing member (20) has a second limiting inclined surface (22); when the moving block (13) is located in the locking position, the first limiting inclined surface (131) abuts against the second limiting inclined surface (22); when the moving block (13) is located in the unlocking position, the first limiting inclined surface (131) is separated from the second limiting inclined surface (22).

4. The locking device of the molding platform according to claim 1, characterized in that: The moving block (13) comprises a base (132) and a pressing block (133) arranged on the base (132); the pressing block (133) is passed through the fixing frame (11) and is slidably connected to the fixing frame (11); the lower end of the pressing block (133) passes through the fixing frame (11); when the moving block (13) is located in the locking position, the lower end of the pressing block (133) abuts against the second end of the platform fixing member (20); when the moving block (13) is located in the unlocking position, the lower end of the pressing block (133) is separated from the second end of the platform fixing member (20); and / or, A first spring (134) is provided between the fixed frame (11) and the moving block (13); a first end of the first spring (134) abuts against a lower end of the moving block (13); and a second end of the first spring (134) abuts against the fixed frame (11).

5. The locking device of the molding platform according to claim 1, characterized in that: The fixing plate (12) has a lifting mechanism connection portion, the fixing frame (11) extends vertically, and the fixing plate (12) extends horizontally and is connected to the lower end of the fixing frame (11).

6. The locking device of the molding platform according to claim 2, characterized in that: A sliding guide structure (14) is provided between the moving block (13) and the fixed frame (11).

7. The locking device of the molding platform according to claim 6, characterized in that: The moving block (13) is provided with a guide block (15), the guide block (15) is slidably arranged on the moving block (13) in a transverse direction, and the sliding guide structure (14) is arranged between the guide block (15) and the fixed frame (11).

8. The locking device of the molding platform according to claim 7, characterized in that: The sliding guide structure (14) comprises a first guiding inclined surface (141) and a second guiding inclined surface (142), wherein the first guiding inclined surface (141) is arranged on a side wall of the guiding block (15) facing the fixing frame (11), and the second guiding inclined surface (142) is arranged on a side wall of the fixing frame (11) facing the guiding block (15), and the first guiding inclined surface (141) and the second guiding inclined surface (142) are in contact with each other; and / or, The moving block (13) is provided with a first screw (135) and a second spring (136); the first screw (135) is passed through the guide block (15) and is threadedly connected to the moving block (13); and the second spring (136) is located between the guide block (15) and the moving block (13).

9. The locking device of the molding platform according to claim 1, characterized in that: The moving block (13) comprises a first lifting block (137) and a second lifting block (138), wherein the first lifting block (137) is arranged above the second lifting block (138); the moving block (13) further comprises a second screw (16) and a third spring (17), wherein the second screw (16) is passed through the first lifting block (137) and is threadedly connected to the second lifting block (138); the third spring (17) is sleeved on the second screw (16), a first end of the third spring (17) is in contact with the first lifting block (137), and a second end of the third spring (17) is in contact with the second lifting block (138); a driving member (111) is arranged on the fixing frame (11), and the driving member (111) is drivingly connected to the first lifting block (137) so as to drive the first lifting block (137) to rise and fall relative to the fixing frame (11).

10. The locking device of the molding platform according to claim 5, characterized in that: The locking device of the molding platform also includes a driving member (111), the driving member (111) includes a rotating shaft (1111), a handle (1112) and a rotating cam (1113), the rotating shaft (1111) is arranged in the horizontal direction through the fixed frame (11), the handle (1112) is connected to the rotating shaft (1111), the rotating cam (1113) is arranged on the rotating shaft (1111) and abuts against the upper end of the moving block (13), the handle (1112) drives the rotating shaft (1111) to rotate, and the rotating shaft (1111) drives the moving block (13) to move from the unlocking position to the locking position by means of the rotating cam (1113).

11. The locking device of the molding platform according to claim 10, characterized in that: The locking device of the molding platform also includes a position detection member (30) for detecting the position of the handle (1112).

12. The locking device of the molding platform according to claim 1, characterized in that: The platform fixing member (20) comprises a first locking block (23) and a second locking block (24) which are arranged at intervals, and the first locking block (23) and the second locking block (24) are used to extend into the installation groove.

13. A 3D printer, characterized in that: The 3D printer comprises: Lifting mechanism; A forming platform (40); A locking device (50), wherein the molding platform (40) is arranged on the locking device (50), the lifting mechanism is connected to the lifting mechanism connecting part of the locking device (50), and the locking device (50) is the locking device described in any one of claims 1 to 12.

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