Molding platform locking structure of 3D printer

Abstract

The utility model relates to a forming platform locking structure of a 3D printer. The forming platform locking structure comprises a horizontal sliding rail, a horizontal frame and a printing platform. The horizontal frame is arranged on the horizontal sliding rail, and the printing platform is fixedly installed on the horizontal frame through a locking device. The locking device comprises a fixed seat, a pressing plate and a locking piece, and the locking piece is driven by an ejector rod and a handle to drive the pressing plate to lock and connect the printing platform and the horizontal frame; the horizontal frame adopts a hollow structure and consists of a transverse rod, a vertical rod, an arc-shaped rod and an inclined rod, so that the weight is reduced and the sliding sensitivity is improved; in addition, a magnetic attraction block is arranged on the upper surface of the horizontal frame and used for achieving magnetic attraction connection with a printing platform. The lower surface of a pressing block of the pressing plate is provided with a conical protruding block which is matched with a conical groove of the printing platform, and the fixing effect is further enhanced. The 3D printing platform is simple in design structure, convenient to operate, capable of effectively improving the stability and the installation efficiency of the printing platform and suitable for various 3D printer devices.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer equipment technology, and in particular to the locking structure of the forming platform of a 3D printer. Background Technology

[0002] 3D printing technology, as a rapid prototyping technology, has been widely used in industrial manufacturing, medical, and educational fields in recent years. The build platform of a 3D printer is a key component that supports the printed object, and its stability and precision directly affect print quality. Traditional build platforms are usually fixed with bolts or clamps, making installation and disassembly cumbersome and prone to loosening, causing platform wobbling during printing and affecting printing accuracy. Furthermore, traditional build platforms are relatively bulky, increasing the overall weight of the equipment and reducing the flexibility of moving and adjusting the printing device.

[0003] In existing technologies, some 3D printers use simple locking devices or magnetic methods to fix the printing platform, but these designs often have the following problems:

[0004] 1. Loose locking: Traditional locking devices are prone to loosening after prolonged use, leading to a decrease in the stability of the printing platform;

[0005] 2. Inconvenient operation: Installing and disassembling the printing platform requires tools, increasing the complexity of the operation;

[0006] 3. Excessive weight: The unreasonable structural design of the molding platform results in an excessively heavy overall weight of the equipment, affecting the flexibility of platform movement and adjustment. Utility Model Content

[0007] To address the existing problems, this utility model proposes a locking structure for the forming platform of a 3D printer. By optimizing the locking device, adopting a hollow frame design, and introducing a magnetic connection method, it solves the problems of insecure locking, inconvenient operation, and insensitive movement in traditional technologies, thereby improving the stability, ease of operation, and overall performance of the printing platform.

[0008] This utility model proposes a locking structure for a forming platform of a 3D printer, including a horizontal slide rail, a horizontal frame mounted on the horizontal slide rail, a printing platform mounted on the upper surface of the horizontal frame, and a locking device between the printing platform and the horizontal frame for fixing the printing platform onto the horizontal frame. The locking device includes:

[0009] The mounting bracket is fixedly installed at one end of the horizontal frame;

[0010] The pressure plate is rotatably connected to the fixed base;

[0011] A locking element is connected to one end of the fixed base via a shaft.

[0012] When the locking member is pushed upward, one end of the pressure plate is lifted, causing the pressure block at the other end of the pressure plate to lock the printing platform to the horizontal frame.

[0013] Preferably, the locking device further includes a set screw, which is disposed at the other end of the fixed seat away from the locking member. The end of the set screw passes through a screw hole on the fixed seat and abuts against one side wall of the horizontal frame to realize the connection between the fixed seat and the horizontal frame.

[0014] Preferably, the locking member includes a top rod, and a handle is provided on one side of the top rod for driving the top rod to rotate relative to the fixed seat. One end of the top rod is rotatably connected to the fixed seat through a pin, and the other end is provided with a crossbar perpendicular to the top rod. The two ends of the crossbar are respectively provided with rotating wheels, which can roll relative to each other along the lower surface of the pressure plate.

[0015] Preferably, a locking block is provided at the connection between the top rod and the handle. The locking block cooperates with a notch provided at one end of the pressure plate to realize the snap-fit ​​connection between the locking element and the pressure plate.

[0016] Preferably, a tapered protrusion extends downward on the lower surface of the pressure plate, and the tapered protrusion cooperates with a tapered groove at one end of the printing platform to achieve a fixed connection between the pressure plate and the printing platform.

[0017] Preferably, the upper surface of the horizontal frame is provided with a magnetic block for magnetic connection with the printing platform.

[0018] Preferably, the horizontal frame is composed of multiple horizontal rods, vertical rods, arc rods and diagonal rods to form a hollow frame structure, which is used to reduce the weight of the horizontal frame and enhance its sensitivity to sliding on the horizontal slide rail.

[0019] The technical advantages of the locking structure for the molding platform of the 3D printer provided by this utility model are as follows:

[0020] 1. The structure employs a top rod-driven pressure plate combined with a tapered protrusion and tapered groove design. Through leverage and mechanical self-locking, it achieves rapid locking, effectively preventing displacement and loosening of the printing platform due to vibration or external forces during printing, significantly improving the stability of the printing platform. The locking block of the locking component is snapped into the notch of the pressure plate, further enhancing the reliability of the locking state and preventing accidental loosening.

[0021] 2. The horizontal frame adopts a hollow structure composed of horizontal bars, vertical bars, arc bars and diagonal bars, which significantly reduces the overall weight while ensuring structural strength, improves the sliding sensitivity of the platform on the horizontal slide rail, and facilitates quick position adjustment.

[0022] 3. The magnetic connection design between the magnetic block and the printing platform simplifies the installation process, allowing for quick positioning without tools; the pull of the handle drives the top rod, and the roller rolls along the pressure plate, making the locking / unlocking action smooth, effortless, and easy to operate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0024] Figure 1 This is an exploded view of the locking structure of the molding platform of the 3D printer according to an embodiment of the present invention;

[0025] Figure 2 This is another perspective structural schematic diagram of the molding platform locking structure of the 3D printer according to an embodiment of the present invention;

[0026] Figure 3 yes Figure 2 Enlarged view of section A in the middle;

[0027] Figure 4 This is a schematic diagram of the locking device structure of the molding platform locking structure of the 3D printer according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the locking device structure of the molding platform locking structure of the 3D printer according to another embodiment of the present invention.

[0029] Figure 6 This is a partial structural diagram of the locking device structure of the molding platform locking structure of the 3D printer according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the locking component structure of the molding platform locking structure of the 3D printer according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the pressure plate structure of the locking structure of the molding platform of the 3D printer according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the pressure plate of the molding platform locking structure of the 3D printer according to another embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the horizontal frame structure of the molding platform locking structure of the 3D printer according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the printing platform structure of the molding platform locking structure of the 3D printer according to an embodiment of the present invention.

[0035] Reference numerals: 1. Horizontal slide rail; 2. Horizontal frame; 21. Horizontal rod; 22. Vertical rod; 23. Arc rod; 24. Diagonal rod; 25. Magnetic block; 3. Printing platform; 31. Conical groove; 4. Locking device; 41. Fixing base; 42. Pressure plate; 420. Pressure block; 421. Notch; 422. Conical groove; 423. Rotating shaft; 43. Locking element; 43. Top rod; 431. Handle; 432. Pin; 433. Crossbar; 434. Rotating wheel; 435. Locking block; 436. Top screw; 44. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figure 1 As shown, the molding platform locking structure of the 3D printer in this embodiment includes a horizontal slide rail 1, a horizontal frame 2, a printing platform 3, and a locking device 4. The horizontal slide rail 1 adopts a linear guide rail structure and is installed parallel to the 3D printer base. The horizontal frame 2 is slidably connected to the horizontal slide rail 1. The printing platform 3 is detachably installed on the upper surface of the horizontal frame 2 via the locking device 4. The locking device 4 is distributed at one end of the horizontal frame 2, or symmetrically distributed at both ends of the horizontal frame 2, for quickly fixing the printing platform 3.

[0038] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 11 As shown, the locking device 4 includes: a fixed base 41, a pressure plate 42, a locking element 43, and a set screw 44. Among them,

[0039] The fixing seat 41 is fixed to one end of the horizontal frame 2 by bolts and connectors. A set screw 44 is provided at its bottom. The end of the set screw 44 passes through the screw hole of the fixing seat 41 and abuts against the side wall of the horizontal frame 2 to achieve fine adjustment and positioning of the fixing seat 41.

[0040] The pressure plate 42 is hinged to the fixed base 41 via a rotating shaft 423. A pressure block 420 is provided at one end of the pressure plate 42. A tapered protrusion 422 extends from the lower surface of the pressure block 420. The tapered protrusion 422 cooperates with the tapered groove 31 provided at one end of the printing platform 3 to realize the fixed connection between the pressure plate 42 and the printing platform 31. A notch 421 is provided at the other end of the pressure plate 42.

[0041] The locking component 43 includes: a push rod 431, a handle 432, a pin 433, a crossbar 434, a rotating wheel 435, and a locking block 436. One end of the push rod 431 is rotatably connected to the fixed seat 41 via the pin 433, and the other end is connected to the middle part of the crossbar 434. The rotating wheels 435 are installed at both ends of the crossbar 434. The rotating wheels 435 are preferably bearings, which can roll relative to each other along the lower surface of the pressure plate 42. The handle 432 is connected to the side of the push rod 431. A locking block 436 is provided at the connection between the handle 432 and the push rod 431. The locking block 436 is engaged with the notch 421 near the end of the pressure plate 42.

[0042] like Figure 10 As shown, the horizontal frame 2 is slidably connected to the horizontal slide rail 1. It is formed by welding or integrally molding horizontal rods 21, vertical rods 22, arc-shaped rods 23, and diagonal rods 24 to form a hollow frame structure, which is used to reduce the weight of the horizontal frame 2 and enhance its sensitivity in sliding on the horizontal slide rail 1. A magnetic block 25 is provided on the upper surface of the horizontal frame 2. It uses neodymium iron boron permanent magnets and is attracted and fixed to the ferromagnetic metal plate at the bottom of the printing platform 3.

[0043] like Figure 1-11 As shown, the working principle of this embodiment is as follows:

[0044] Step 1: Pre-positioning of printing platform 3. Place printing platform 3 on horizontal frame 2 and use magnetic blocks for initial positioning.

[0045] Step 2: Locking operation. Pull the handle 432 upward to drive the push rod 431 to rotate around the pin 433; the crossbar 434 rises with the push rod 431, and the rotating wheel 435 rolls along the lower surface of the pressure plate 42, pushing the pressure plate 42 to flip around the rotating shaft 423; the conical protrusion 422 of the pressure block 420 is embedded in the conical groove 31 on the edge of the printing platform 3 to form a mechanical self-lock; when the locking block 436 is engaged with the notch 421 of the pressure plate 42, the locking state is completed, and at this time, the handle 432 is in the locked position.

[0046] Step 3: Unlocking operation: Press down on handle 432, lock block 436 disengages from notch 421, push rod 431 rotates, crossbar 434 drives wheel 435 to move down, pressure plate 42 resets, conical protrusion 422 separates from conical groove 31, and printing platform 3 can be easily removed.

[0047] Example of key parameters:

[0048] Horizontal frame 2 hollowing rate: ≥40%;

[0049] The clearance between the tapered protrusion 422 and the tapered groove 31 is ≤0.1mm;

[0050] Magnetic block 25 adsorption force: ≥50N.

[0051] Implementation results:

[0052] Installation time: Reduced from 3 minutes for traditional bolt fixing to within 1 minute;

[0053] Vibration resistance test: Under a vibration environment with a frequency of 20Hz and an amplitude of 1mm, the displacement of the printing platform is less than 0.05mm;

[0054] Life test: After 10,000 consecutive locking / unlocking cycles, the wear of the rotating wheel is less than 0.2mm, and there is no loosening between the lock block and the notch.

[0055] 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, improvements, etc., 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 forming platform locking structure of a 3D printer, comprising a horizontal slide rail (1), characterized in that, The horizontal slide rail (1) is provided with a horizontal frame (2), the upper surface of the horizontal frame (2) is provided with a printing platform (3), a locking device (4) is arranged between the printing platform (3) and the horizontal frame (2) for fixing the printing platform (3) on the horizontal frame (2), and the locking device (4) comprises: A fixed seat (41) is fixedly installed at one end of the horizontal frame (2); A pressing plate (42) is rotatably connected with the fixed seat (41); A locking piece (43) is connected with one end of the fixed seat (41); When the locking piece (43) is lifted upward, one end of the pressing plate (42) is lifted, so that the pressing block (420) at the other end of the pressing plate (42) locks and connects the printing platform (3) and the horizontal frame (2).

2. The molding platform locking structure according to claim 1, wherein The locking device (4) further comprises a jack screw (44) arranged at the other end of the fixed seat (41) away from the locking piece (43), the end of the jack screw (44) penetrates through a screw hole in the fixed seat (41) and abuts against a side wall of the horizontal frame (2), so as to realize the connection between the fixed seat (41) and the horizontal frame (2).

3. The molding platform locking structure according to claim 2, wherein The locking piece (43) comprises a jack rod (431), one side of the jack rod (431) extends outwardly and is provided with a handle (432) for driving the jack rod (431) to rotate relative to the fixed seat (41), one end of the jack rod (431) is rotatably connected with the fixed seat (41) through a pin shaft (433), and the other end of the jack rod (431) is provided with a cross rod (434) perpendicular to the jack rod (431), and both ends of the cross rod (434) are provided with rotating wheels (435), and the rotating wheels (435) can relatively roll along the lower surface of the pressing plate (42).

4. The molding platform locking structure according to claim 3, wherein A locking block (436) is arranged at the connection between the jack rod (431) and the handle (432), the locking block (436) is matched with a notch (421) arranged at one end of the pressing plate (42), and the locking block (436) is matched with the notch (421) arranged at one end of the pressing plate (42), so as to realize the buckle connection between the locking piece (43) and the pressing plate (42).

5. The molding platform locking structure of claim 1, wherein The lower surface of the pressing block (420) of the pressing plate (42) extends downwardly and is provided with a tapered protrusion (422), the tapered protrusion (422) is matched with a tapered groove (31) arranged at one end of the printing platform (3), and the tapered protrusion (422) is matched with the tapered groove (31) arranged at one end of the printing platform (3), so as to realize the fixed connection between the pressing plate (42) and the printing platform (3).

6. The molding platform locking structure of claim 1, wherein The upper surface of the horizontal frame (2) is provided with a magnetic block (25) for realizing the magnetic connection with the printing platform (3).

7. The molding platform locking structure according to claim 6, wherein The horizontal frame (2) is composed of a plurality of transverse rods (21), vertical rods (22), arc-shaped rods (23) and inclined rods (24), and forms a hollow frame structure, so as to reduce the weight of the horizontal frame (2) and enhance the sensitivity of the horizontal frame (2) sliding on the horizontal slide rail (1).

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