3D printer precision guide rail platform leveling device

Abstract

The invention relates to the technical field of 3D printers, in particular to a 3D printer precision guide rail platform leveling device which comprises a moving plate and a printing plate and further comprises a hot plate, an adjusting assembly and a detection assembly, the hot plate is connected to the upper portion of the moving plate, the adjusting assembly is connected to the lower portion of the moving plate, and the top of the adjusting assembly is connected with the hot plate. Through the arrangement of the detection assembly, when the printing plate is not level, the distance for pushing the moving column to move upwards can be changed at the corner of the printing plate, so that the moving column deviates from the specified height, the horizontal state of rotation is further broken, whether the rotating rod returns to the horizontal state or not is observed during leveling, and therefore the leveling degree is visualized; and when the pressing plate downwards presses the printing plate, the protruding edge is attached to the edge of the printing plate, so that the pressing plate is clamped with the corner of the printing plate, and it is avoided that the printing plate deviates in the printing process, and the printing quality is affected.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and specifically to a leveling device for a precision guide rail platform of a 3D printer. Background Art

[0002] In the field of 3D printing technology, the leveling accuracy of the printing platform is a key factor in ensuring the quality of the first layer forming and the overall printing success rate. The motion system of 3D printers generally uses a combination of linear guide rails and stepper motors to achieve precise positioning. For example, the X / Y axis guide rails control the movement of the print head through a slider roller structure. The core function of the leveling device is to keep a constant gap between the nozzle and the printing platform by adjusting the Z-axis height or the platform tilt, so as to ensure the stability and accuracy of the printing quality.

[0003] The leveling methods of the printing platform of 3D printers are divided into manual leveling and automatic leveling. During the manual leveling process, the height at the four corners of the printing platform is changed by turning the screws at the bottoms of the four corners of the printing platform, so as to achieve the leveling of the printing platform. After leveling, it is necessary to detect whether the platform is leveled by the machine. However, during the leveling process, in order to judge whether there is a deviation, the A4 paper resistance test is combined during leveling to complete. The user needs to move the paper between the nozzle and the platform, and judge the "slight resistance" by touch to determine the gap, and repeat the adjustment of the four corners until it is uniform. However, this method has significant subjective perception errors. Different operators have different thresholds for "appropriate resistance", resulting in insufficient consistency in the leveling of the four corners. In addition, the material properties of the paper (such as thickness, surface friction coefficient, and deformation caused by humidity) will also interfere with the test results.

[0004] Therefore, a leveling device for a precision guide rail platform of a 3D printer is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a leveling device for a precision guide rail platform of a 3D printer. In order to solve the problem that it is impossible to accurately judge during the leveling process, it is judged whether the leveling is completed by the degree of pushing the detection component up by the printing plate, so as to provide a judgment basis for the leveling process.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A leveling device for a precision guide rail platform of a 3D printer, comprising a moving plate and a printing plate, further comprising a hot plate, an adjusting assembly and a detecting assembly. The hot plate is connected above the moving plate. The adjusting assembly is connected below the moving plate and its top is connected to the hot plate. The detecting assembly is connected above the moving plate and is connected to the hot plate. The printing plate is connected to the upper side of the hot plate. When the adjusting assembly adjusts the hot plate, the offset distance of the detecting assembly pushed by the four corners of the printing plate is used to judge whether it is leveled. When the detecting assembly presses down the four corners of the printing plate, the printing plate is fixed by fitting with the edge of the printing plate.

[0008] In the above solution, during the adjustment process, the moving distance of the detecting assembly pushed by the printing plate is used to judge whether it is leveled, thus avoiding the judgment by feeling, and further improving the leveling accuracy. And during the printing process, the printing plate can also be fixed, improving the stability of the printing plate during the printing process, and further improving the printing quality. And by observing the detecting assembly, it can be judged whether the four corners of the printing plate are tilted, so that the printing plate can be adjusted in time.

[0009] Preferably, the detecting assembly includes a mounting post, a moving post, a compression spring, a pressing plate, a movable groove, a rotating rod and a support rod. The mounting post is connected to the upper side of the moving plate and is L-shaped. The moving post is connected inside the mounting post and its lower end extends to the outside. The pressing plate is connected to the lower end of the moving post and its bottom cooperates with the printing plate. The compression spring is sleeved on the outer wall of the moving post. The movable groove is opened inside the mounting post. The support rod is connected inside the movable groove. The rotating rod is hinged to the top of the support rod. The telescopic rod is connected to the outer wall of the moving post. One end of the rotating rod is hinged to the telescopic rod and the other end extends to the outside of the movable groove.

[0010] In the above solution, the pressing plate is pressed above the printing plate. Since the mounting post is mounted on the moving post, the position of the moving post is fixed. When the pressing plate presses on the printing plate, it will push the moving post to move. When it is flat, the moving post will move to a specified height. At this time, the rotating rod is in a horizontal state. When the height of the corner of the printing plate is too high, it will push the moving post to move upward. At this time, the end of the rotating rod hinged to the telescopic rod will move upward with the moving post, so that the extending end of the rotating rod will move downward. When the height of the corner of the printing plate is too low, the moving post will move downward. At this time, the end of the rotating rod hinged to the telescopic rod will move downward with the moving post, so that the extending end of the rotating rod will move upward. Thus, it can be judged whether the corner of the printing plate is too high or too low by the up and down offset of the extending end of the rotating rod. During the adjustment, it can be judged whether it is leveled by observing whether the rotating rod tends to be horizontal, or a mark can be added at the horizontal position. By observing whether the rotating rod coincides with the mark, it can be judged whether the printing plate is leveled. Thus, during the leveling process, the visualization of the leveling degree is realized, and further a judgment basis for leveling is provided, thereby improving the leveling accuracy.

[0011] Preferably, the cross-section of the pressing plate is a right triangle, and protruding edges are connected to the bottoms of the two right-angled sides.

[0012] In the above solution, the pressing plate is designed as a right triangle. When the pressing plate is pressed down, the right-angled sides of the pressing plate are parallel to the right-angled sides of the hot plate, and the protruding edges at the bottoms of the right-angled sides are attached to the edges of the hot plate, thereby wrapping the right-angled sides of the hot plate and engaging the pressing plate with the corners of the hot plate. Since the corners of the printing plate are aligned with the corners of the hot plate when the printing plate is installed on the hot plate, the movement of the printing plate on the hot plate can be restricted by the protruding edges at the bottom of the pressing plate. As the weight of the printed item on the printing plate increases with the printing time, the overall weight of the printing plate and the printed matter increases, and the inertia also increases accordingly. When the moving plate moves back and forth quickly, and because the printing plate and the hot plate are magnetically connected for the convenience of disassembly and assembly of the printing plate, the printing plate has no fixed connection, and thus the printing plate is prone to offset under the action of inertia, affecting the printing quality. The protruding edges are used to restrict the offset of the printing plate, thereby improving the printing quality.

[0013] Preferably, a bevel edge is provided on the side of the protruding edge close to the printing plate, and the thickness of the protruding edge gradually increases from top to bottom.

[0014] In the above solution, when the pressing plate moves downward to press the printing plate after the printing plate is installed, the design of the bevel edge increases the opening when the protruding edge is attached to the printing plate, avoiding hard extrusion between the printing plate and the protruding edge when the printing plate and the hot plate are tilted. And during the downward movement, the bevel edge will also push the tilted printing plate to move, making the printing plate parallel to the hot plate.

[0015] Preferably, the hinge point of the rotating rod and the support rod is close to the hinge point of the rotating rod and the moving column, and the end of the rotating rod away from the hinge point is T-shaped.

[0016] In the above solution, the hinge of the support rod is close to the moving column. Using the principle of leverage, the distance of the short end moving up and down will be magnified at the long end, so that small deviations can be magnified during adjustment, and thus more precise adjustment can be achieved. And the end of the rotating rod is set to be T-shaped, increasing the area of the end, so that it is easier to observe whether the rotating rod is tilted, further improving the installation accuracy.

[0017] Preferably, the adjusting assembly includes a fixed sleeve, a bolt and a nut. A plurality of the fixed sleeves are connected to the bottom of the hot plate. The bolt is connected to the bottom of the moving plate and passes through the moving plate to be movably connected with the fixed sleeve. The nut is connected to the bottom of the bolt.

[0018] In the above solution, the bolt is rotated by turning the nut, so that the bolt moves up and down relative to the moving plate, thereby realizing the upward or downward movement of the hot plate, and thus realizing the leveling of the printing plate. The connection between the top of the bolt and the fixed sleeve can rotate, so that the bolt can rotate relative to the hot plate.

[0019] Preferably, the bolt is divided into an upper adjustment end and a lower adjustment end. The upper adjustment end is movably connected to the upper end of the lower adjustment end. A hexagonal hole is formed at the top of the lower adjustment end. The diameter of the hexagonal hole gradually decreases from top to bottom. A locking assembly is connected inside the hexagonal hole.

[0020] In the above solution, by dividing the bolt into an upper adjustment end and a lower adjustment end, and they are threadedly connected. The thread density between the upper adjustment end and the lower adjustment end is greater than the thread density between the lower adjustment end and the moving plate, so as to realize the coarse adjustment of the hot plate by the lower adjustment end and the fine adjustment of the hot plate by the lower adjustment end, thereby improving the accuracy of adjustment.

[0021] Preferably, the locking assembly includes a locking column, a locking rod and a return spring. The locking column is slidably connected inside the upper adjustment end. The upper end of the locking column is hexagonal and the lower end is cylindrical. A return spring is sleeved on the outer wall of the lower end of the locking column. The nut is connected to the lower end of the locking column. A plurality of locking rods are slidably connected to the top of the inner wall of the fixed sleeve, and the lower ends extend out of the hot plate and cooperate with the locking column.

[0022] In the above solution, in the initial state, the locking column moves upward under the push of the return spring, so that the upper end of the locking column pushes some of the locking rods upward, so that a plurality of locking rods form a hexagonal groove that engages with the upper end of the locking column, thereby restricting the rotation of the locking column. When the locking column moves upward, the top of the nut will contact the bottom of the lower adjustment end, and the two contact surfaces are designed to be rough, so as to increase the resistance of the lower adjustment end to rotate, thereby avoiding the self-rotation of the lower adjustment end when the moving plate vibrates, and further restricting the rotation of the bolt after the leveling is completed, so as to avoid the imbalance of the printing plate caused by the self-rotation and loosening of the bolt due to vibration during the movement of the moving plate. And pull down the locking rod so that the locking rod fits against the inner wall of the hexagonal hole, and then turn the nut so that the locking rod drives the upper adjustment end and the lower adjustment end of the bolt to rotate simultaneously, thereby realizing coarse adjustment. Pull down some of the locking rods to a position where they do not contact the inner wall of the hexagonal hole, and then turn the nut so that the locking rod drives the upper adjustment end to rotate, thereby realizing fine adjustment.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. By setting up a detection component, when the corner of the printing plate is too high, the printing plate will push the moving column upward; when it is too low, the moving column will move downward. When the moving column deviates from the specified height, the moving column will break the horizontal state of rotation, thereby reflecting the horizontal state of the printing plate. When leveling, observe whether the rotating rod returns to the horizontal state to visualize the leveling degree, and further provide a judgment basis for leveling, thereby improving the accuracy of leveling. Moreover, when the pressing plate presses down on the printing plate, it fits with the edge of the printing plate through the protruding edge, so that the pressing plate is clamped with the corner of the printing plate, avoiding the offset of the printing plate during printing and affecting the printing quality.

[0025] 2. By setting up a locking component, the upper end of the locking column is used to push the locking rod upward, so that multiple locking rods form a hexagonal groove that engages with the upper end of the locking column, thereby restricting the rotation of the locking column, and avoiding the self-rotation and loosening of the printing plate caused by vibration during the movement of the moving plate, resulting in the imbalance of the printing plate. At the same time, pulling down the locking column by different distances realizes the coarse adjustment and fine adjustment of the bolt, improving the accuracy of leveling.

[0026] 3. By setting up a support rod and a rotating rod, the support rod and the rotating rod are hinged to form a lever structure. When the moving column moves up and down, the rotating rod will deflect around the support rod, so that the extended end of the rotating rod deviates from the horizontal position, and then judge whether the printing plate is tilted. And make the hinge point close to the moving column, and then use the principle that the distance of the short end of the lever moving up and down will be magnified at the long end, so as to magnify the small movement of the moving column at the extended end of the rotating rod, and then realize more accurate adjustment. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the whole invention;

[0028] Figure 2 It is a schematic structural diagram of the adjusting component of the invention;

[0029] Figure 3 It is a schematic structural diagram of the detection component of the invention;

[0030] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of part A in;

[0031] Figure 5 It is a schematic structural diagram of the bolt of the invention;

[0032] Figure 6 It is a schematic diagram when the corner of the printing plate of the invention is in a horizontal state;

[0033] Figure 7 It is a schematic diagram when the corner of the printing plate of the invention is in a low state;

[0034] Figure 8This is a schematic diagram when the corners of the printing plate of the present invention are in a relatively high state.

[0035] In the figure: 1. Moving plate; 2. Printing plate; 3. Heating plate;

[0036] 4. Adjusting component; 401. Fixed sleeve; 402. Bolt; 4021. Upper adjusting end; 4022. Lower adjusting end; 4023. Hexagonal hole; 403. Nut;

[0037] 5. Detection component; 501. Mounting post; 502. Moving post; 503. Compression spring; 504. Pressing plate; 5041. Protruding edge; 505. Activity slot; 506. Rotating rod; 507. Support rod; 508. Telescopic rod;

[0038] 6. Locking component; 601. Locking post; 602. Locking rod; 603. Return spring. Detailed implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, and combined with the working state to make its structural characteristics more detailed. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figures 1 to 8 , the present invention provides a leveling device for a 3D printer precision guide rail platform, and the technical solution is as follows:

[0041] A leveling device for a 3D printer precision guide rail platform, referring to Figure 1 、 Figure 2 and Figure 3 , includes a moving plate 1 and a printing plate 2, and also includes a heating plate 3, an adjusting component 4 and a detection component 5. The heating plate 3 is connected above the moving plate 1, the adjusting component 4 is connected below the moving plate 1 and the top is connected to the heating plate 3, the detection component 5 is connected above the moving plate 1 and is connected to the heating plate 3, the printing plate 2 is connected to the upper side of the heating plate 3. When the adjusting component 4 adjusts the heating plate 3, the offset distance of the detection component 5 pushed up by the four corners of the printing plate 2 is used to judge whether it is leveled, thus avoiding judging by feeling, and then improving the leveling accuracy. When the detection component 5 presses down the four corners of the printing plate 2, the printing plate 2 is fixed by fitting with the edge of the printing plate 2, improving the stability of the printing plate 2 during the printing process, and then improving the printing quality. And it is also possible to judge whether the four corners of the printing plate 2 are inclined by observing the detection component 5, so that the printing plate 2 can be adjusted in time.

[0042] As an implementation manner of the present invention, refer to Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 , the detection component 5 includes a mounting post 501, a moving post 502, a compression spring 503, a pressing plate 504, a moving slot 505, a rotating rod 506 and a support rod 507. The mounting post 501 is connected to the upper side of the moving plate 1 and is L-shaped. The moving post 502 is connected to the inside of the mounting post 501, and the lower end extends to the outside. The moving post 502 can move up and down inside the mounting post 501. The pressing plate 504 is connected to the lower end of the moving post 502, and the bottom cooperates with the printing plate 2. The compression spring 503 is sleeved on the outer wall of the moving post 502. The moving slot 505 is opened inside the mounting post 501. The support rod 507 is connected to the inside of the moving slot 505. The rotating rod 506 is hinged to the top end of the support rod 507. The telescopic rod 508 is connected to the outer wall of the moving post 502. One end of the rotating rod 506 is hinged to the outer wall of the telescopic rod 508, and the other end extends to the outside of the moving slot 505. When the pressing plate 504 presses on the printing plate 2 and the printing plate 2 is flat, the moving post 502 will move to a specified height. At this time, the rotating rod 506 is in a horizontal state. When the height of the corner of the printing plate 2 is too high, it will push the moving post 502 upward. At this time, the end of the rotating rod 506 hinged to the telescopic rod 508 will move upward with the moving post 502, so that the extended end of the rotating rod 506 moves downward. When the height of the corner of the printing plate 2 is too low, the moving post 502 will move downward. At this time, the end of the rotating rod 506 hinged to the telescopic rod 508 will move downward with the moving post 502, so that the extended end of the rotating rod 506 will move upward. Furthermore, it can be judged whether the corner of the printing plate 2 is too high or too low by the up and down offset of the extended end of the rotating rod 506. During leveling, when the rotating rod 506 is in a horizontal position, the leveling is completed. Thus, during the leveling process, the visualization of the leveling degree is realized, and furthermore, a judgment basis is provided for leveling, thereby improving the accuracy of leveling.

[0043] As an implementation manner of the present invention, refer to Figure 3 , the cross-section of the pressing plate 504 is a right triangle, and when the pressing plate 504 presses down, the right-angled side of the pressing plate 504 is parallel to the right-angled side of the hot plate 3, and a protruding edge 5041 is connected to the bottom of the two right-angled sides. By the protruding edge 5041 at the bottom of the right-angled side fitting with the edge of the hot plate 3, the right-angled side of the hot plate 3 is wrapped, so that the pressing plate 504 is engaged with the corner of the hot plate 3. Since when the printing plate 2 is installed on the hot plate 3, the corner of the printing plate 2 is parallel to the corner of the hot plate 3, the movement of the printing plate 2 on the hot plate 3 can be restricted by the protruding edge 5041 at the bottom of the pressing plate 504, and further, it is avoided that the printing plate 2 is prone to shift under the action of inertia, affecting the printing quality.

[0044] As an implementation manner of the present invention, referring to Figure 4 , a bevel edge is provided on one side of the protruding edge 5041 close to the printing plate 2, and the thickness of the protruding edge 5041 gradually increases from top to bottom. The design of the bevel edge increases the opening when the protruding edge 5041 fits with the printing plate 2, avoiding hard extrusion between the printing plate 2 and the hot plate 3 when the printing plate 2 and the hot plate 3 are inclined. Moreover, during the downward movement, the bevel edge will also push the inclined printing plate 2 to move, making the printing plate 2 parallel to the hot plate 3, further improving the accuracy of leveling.

[0045] As an implementation manner of the present invention, referring to Figure 4 , the hinge point of the rotating rod 506 and the support rod 507 is close to the hinge point of the rotating rod 506 and the moving column 502. Using the principle of the lever, the distance of the short end moving up and down will be amplified at the long end, so that small deviations can be amplified during adjustment, and thus more precise adjustment can be achieved. The end of the rotating rod 506 away from the hinge point is set in a T shape, increasing the area of the end, so that it is easier to observe whether the rotating rod 506 is inclined, further improving the accuracy of installation.

[0046] As an implementation manner of the present invention, referring to Figure 5 , the adjusting assembly 4 includes a fixed sleeve 401, a bolt 402 and a nut 403. A plurality of the fixed sleeves 401 are connected to the bottom of the hot plate 3. The bolt 402 is connected to the bottom of the moving plate 1 and passes through the moving plate 1 to be movably connected to the fixed sleeve 401, enabling the bolt 402 to rotate relative to the hot plate 3. The nut 403 is connected to the bottom of the bolt 402. By rotating the nut 403, the bolt 402 rotates, so that the bolt 402 moves up and down relative to the moving plate 1, thereby realizing the upward or downward movement of the hot plate 3, and thus realizing the leveling of the printing plate 2.

[0047] As an implementation manner of the present invention, referring to Figure 5 , the bolt 402 is divided into an upper adjusting end 4021 and a lower adjusting end 4022. The upper adjusting end 4021 is movably connected to the upper end of the lower adjusting end 4022. The thread density between the upper adjusting end 4021 and the lower adjusting end 4022 is greater than the thread density between the lower adjusting end 4022 and the moving plate 1, so as to realize the coarse adjustment of the hot plate 3 by the lower adjusting end 4022 and the fine adjustment of the hot plate 3 by the upper adjusting end 4021, thereby improving the accuracy of adjustment. A hexagonal hole 4023 is opened at the top of the lower adjusting end 4022, and the diameter of the hexagonal hole 4023 gradually decreases from top to bottom. A locking assembly 6 is connected inside the hexagonal hole 4023.

[0048] As an implementation manner of the present invention, referring to Figure 5, the locking assembly 6 includes a locking post 601, a locking rod 602 and a return spring 603. The locking post 601 is slidably connected inside the upper adjusting end 4021. The upper end of the locking post 601 is hexagonal, and the lower end is cylindrical. A return spring 603 is sleeved on the outer wall of the lower end of the locking post 601. The nut 403 is connected to the lower end of the locking post 601. A plurality of locking rods 602 are slidably connected to the top of the inner wall of the fixed sleeve 401, and the lower ends extend out of the hot plate 3 and cooperate with the locking post 601. When not leveling, the locking post 601 moves upward under the push of the return spring 603, so that the upper end of the locking post 601 pushes some of the locking rods 602 upward, so that the plurality of locking rods 602 form a hexagonal groove that engages with the upper end of the locking post 601, thereby restricting the rotation of the locking post 601, and further restricting the rotation of the bolt 402 after leveling is completed, so as to avoid the imbalance of the printing plate 2 caused by the self-rotation and loosening of the bolt 402 due to vibration during the movement of the moving plate 1. When leveling, the nut 403 is pulled to move the locking rod 602 downward to separate from the locking rod 602, thereby releasing the fixation of the bolt 402, and then the nut 403 is rotated to drive the bolt 402 to rotate by the locking rod 602, so as to achieve adjustment. When finely adjusting, some of the locking rods 602 are pulled down, and then the nut 403 is rotated to drive the upper adjusting end 4021 to rotate by the locking rod 602. When coarsely adjusting, the locking rod 602 is pulled down so that the upper half of the locking rod 602 moves to the bottom of the hexagonal hole 4023, and the upper half of the locking rod 602 fits against the inner wall of the hexagonal hole 4023, and then the nut 403 is rotated to drive the bolt 402 to rotate as a whole by the locking rod 602, so as to achieve coarse adjustment.

[0049] Working principle: When in use, first place the printing plate 2 on the hot plate 3, and then press the detection assembly 5 at the four corners of the printing plate 2. Rotate the nuts 403 at the four corners of the moving plate 1 to rotate the bolts 402 to move up or down, so as to level the printing plate 2, and judge whether the printing plate 2 is leveled by observing the rotating rod 506 in the detection assembly 5.

[0050] Specifically: during the judgment process, when the detection component 5 is installed above the four corners of the printing plate 2, the pressing plate 504 is pressed against the four corners of the printing plate 2. Since the height of the moving plate 1 remains unchanged, and the mounting post 501 is connected above the moving plate 1, the height of the mounting post 501 also remains unchanged. When the pressing plate 504 is pressed against the four corners of the printing plate 2, the printing plate 2 pushes the moving post 502 upward by pushing the pressing plate 504. When the printing plate 2 is in a flat state, the moving post 502 moves up to a specified fixed height. At this time, the rotating plate is in a horizontal state. When the corners of the printing plate 2 are too high, it will push the moving post 502 upward. When the moving post 502 moves upward, the hinged end of the rotating rod 506 will move upward. Through the lever formed by the support rod 507 and the rotating rod 506, the extending end of the rotating rod 506 moves downward, so that the extending end of the rotating rod 506 deviates downward. When the height of the corners of the printing plate 2 is too low, the moving post 502 moves downward under the push of the compression spring 503. At this time, the moving post 502 drives the hinged end of the rotating rod 506 downward, so that the extending end of the rotating rod 506 will move upward. Thus, it can be judged whether the corners of the printing plate 2 are too high or too low by the upward and downward deviation of the extending end of the rotating rod 506;

[0051] During coarse adjustment: Pull down the locking rod 602 so that the upper half of the locking rod 602 moves to the bottom of the hexagonal hole 4023, and make the upper half of the locking rod 602 fit against the inner wall of the hexagonal hole 4023. Then rotate the nut 403 to make the locking rod 602 drive the bolt 402 to rotate as a whole, thus realizing coarse adjustment.

[0052] During fine adjustment: Pull down a part of the locking rod 602 without contacting the inner wall of the hexagonal hole 4023. Then rotate the nut 403 to make the locking rod 602 drive the upper adjusting end 4021 to rotate, thus realizing fine adjustment.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leveling device for a precision guide rail platform of a 3D printer, comprising a moving plate (1) and a printing plate (2), characterized in that: It further includes a hot plate (3), an adjusting assembly (4) and a detecting assembly (5). The hot plate (3) is connected above the moving plate (1). The adjusting assembly (4) is connected below the moving plate (1) and its top is connected to the hot plate (3). The detecting assembly (5) is connected above the moving plate (1) and is connected to the hot plate (3). The printing plate (2) is connected to the upper side of the hot plate (3). When the adjusting assembly (4) adjusts the hot plate (3), the offset distance of the detecting assembly (5) is pushed up by the four corners of the printing plate (2) to determine whether it is leveled. When the detecting assembly (5) presses down the four corners of the printing plate (2), the printing plate (2) is fixed by fitting with the edge of the printing plate (2).

2. The leveling device for the precision guide rail platform of a 3D printer according to claim 1, characterized in that: The detecting assembly (5) includes a mounting post (501), a moving post (502), a compression spring (503), a pressing plate (504), a movable slot (505), a rotating rod (506), a support rod (507) and a telescopic rod (508). The mounting post (501) is connected to the upper side of the moving plate (1) and is L-shaped. The moving post (502) is connected inside the mounting post (501) and its lower end extends to the outside. The pressing plate (504) is connected to the lower end of the moving post (502) and its bottom cooperates with the printing plate (2). The compression spring (503) is sleeved on the outer wall of the moving post (502). The movable slot (505) is opened inside the mounting post (501). The support rod (507) is connected inside the movable slot (505). The rotating rod (506) is hinged to the top of the support rod (507). The telescopic rod (508) is connected to the outer wall of the moving post (502). One end of the rotating rod (506) is hinged to the telescopic rod (508) and the other end extends to the outside of the movable slot (505).

3. The leveling device for the precision guide rail platform of a 3D printer according to claim 2, characterized in that: The cross-section of the pressing plate (504) is set as a right triangle, and protruding edges (5041) are connected to the bottoms of the two right-angled sides.

4. A leveling device for a precision guide rail platform of a 3D printer according to claim 3, characterized in that: One side of the protruding edge (5041) close to the printing plate (2) is provided with an inclined side, and the thickness of the protruding edge (5041) gradually increases from top to bottom.

5. The leveling device for the precision guide rail platform of a 3D printer according to claim 2, wherein: The hinge point of the rotating rod (506) and the support rod (507) is close to the hinge point of the rotating rod (506) and the moving post (502). The end of the rotating rod (506) far from the hinge point is set as a T shape.

6. The leveling device for the precision guide rail platform of a 3D printer according to claim 1, characterized in that: The adjusting assembly (4) includes a fixed sleeve (401), a bolt (402) and a nut (403). A plurality of the fixed sleeves (401) are connected to the bottom of the hot plate (3). The bolt (402) is connected to the bottom of the moving plate (1) and passes through the moving plate (1) to be movably connected to the fixed sleeve (401). The nut (403) is connected to the bottom of the bolt (402).

7. A leveling device for a precision guide rail platform of a 3D printer according to claim 6, characterized in that: The bolt (402) is divided into an upper adjusting end (4021) and a lower adjusting end (4022). The upper adjusting end (4021) is movably connected to the upper end of the lower adjusting end (4022). A hexagonal hole (4023) is opened at the top of the lower adjusting end (4022). The diameter of the hexagonal hole (4023) gradually decreases from top to bottom. A locking assembly (6) is connected inside the hexagonal hole (4023).

8. A leveling device for a precision guide rail platform of a 3D printer according to claim 7, characterized in that: The locking assembly (6) includes a locking post (601), a locking rod (602) and a return spring (603). The locking post (601) is slidably connected inside the upper adjusting end (4021). The upper end of the locking post (601) is hexagonal, and the lower end is cylindrical. A return spring (603) is sleeved on the outer wall of the lower end of the locking post (601). The nut (403) is connected to the lower end of the locking post (601). A plurality of locking rods (602) are slidably connected to the top of the inner wall of the fixed sleeve (401), and the lower ends extend out of the interior of the hot plate (3) and cooperate with the locking post (601).

Images