3D printing platform horizontal calibration auxiliary device
By designing protective covers and limiting rods on the spirit level, the bubble tube is protected, solving the problem of easy damage to the spirit level, improving measurement accuracy and service life, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-03
AI Technical Summary
Existing spirit levels are easily damaged by impacts in complex workshop environments, affecting measurement accuracy and service life.
A horizontal calibration auxiliary device for a 3D printing platform was designed, including a horizontal ruler and a protective cover. The protective cover protects the bubble tube, and the combination of a limiting rod, a sliding block, and a threaded rod structure ensures the stability of the device and facilitates easy replacement.
It effectively protects the bubble tube from collision damage, improves measurement accuracy and service life, and reduces maintenance costs.
Smart Images

Figure CN224075025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of horizontal calibration technology, and in particular to a horizontal calibration auxiliary device for a 3D printing platform. Background Technology
[0002] To prevent the height of the printed model from deviating at different positions, which would affect the dimensional accuracy and shape precision of the model, it is necessary to calibrate the level of the 3D printing platform. During the leveling process, a spirit level is required. The staff only needs to place the spirit level on the 3D printing platform and observe the position of the bubble to quickly determine whether the platform is level.
[0003] Currently, existing spirit levels are prone to collisions when used in complex workshop environments with numerous devices. This is because improper handling, such as excessive or hasty movements, or holding the spirit level too close to other tools, can easily damage or crack the bubble tube inside the spirit level, thus affecting its measurement accuracy and lifespan. To address these issues, we propose a 3D printing platform level calibration auxiliary device. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a horizontal calibration auxiliary device for 3D printing platforms.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A horizontal calibration auxiliary device for a 3D printing platform includes a horizontal ruler body. The horizontal ruler body has an air bubble tube inside. A protective cover is movably fitted on the outer side of the horizontal ruler body. A rectangular groove is opened on the side of the protective cover. A connecting plate is inserted into the rectangular groove. A limiting rod is horizontally connected to the inner side of the connecting plate. The other end of the limiting rod extends through the inner wall of the protective cover into the horizontal ruler body. Two sets of positioning grooves that are adapted to the limiting rod are opened on the side of the horizontal ruler body. A notch is opened on the side of the protective cover.
[0007] Preferably, the connecting plate is configured as a U-shaped structure, and the sides of the connecting plate are uniformly provided with anti-slip textures.
[0008] Preferably, the inner side of the connecting plate is symmetrically connected with connecting springs, and the other end of the connecting spring is connected to the inner wall of the rectangular groove.
[0009] Preferably, a sliding block is connected to the inner side of the protective cover, and a groove adapted to the sliding block is opened on the outer wall of the horizontal ruler.
[0010] Preferably, the inner wall of the protective cover is bonded with a rubber sheet, and the cross-sectional area of the rubber sheet is larger than the cross-sectional area of the horizontal ruler.
[0011] Preferably, a threaded rod is inserted inside the protective cover, and the inner side of the threaded rod extends into the sliding block. The sliding block has a mating groove that matches the threaded rod inside, and a connecting plate is fixedly connected to the side of the threaded rod away from the sliding block.
[0012] Preferably, the outer side of the connecting disc is fitted with a rubber sleeve, and the outer side of the rubber sleeve is uniformly provided with anti-slip texture.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This device is equipped with a protective cover and a limiting rod. When the device is not in use, the protective cover on the outside of the level body can protect the bubble tube installed inside the level body, preventing the bubble tube from being easily damaged or cracked, thus effectively ensuring the overall service life of the device.
[0015] 2. The device is equipped with sliding blocks and sliding grooves. During use, the stability of the protective cover during the pulling process is ensured by the cooperation of the sliding blocks and sliding grooves. The addition of threaded rods and connecting plates makes it easy for workers to disassemble and replace damaged protective covers, thereby reducing the maintenance cost of the device. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a 3D printing platform horizontal calibration auxiliary device proposed in this utility model;
[0017] Figure 2 for Figure 1 A three-dimensional cross-sectional schematic diagram of the protective cover and rubber plate structure in the middle;
[0018] Figure 3 for Figure 1 A three-dimensional cross-sectional schematic diagram of the limiting rod and connecting spring structure in the middle;
[0019] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;
[0020] Figure 5 for Figure 1 A three-dimensional cross-sectional diagram of the sliding block and groove structure.
[0021] In the diagram: 1. Level ruler body; 2. Bubble tube; 3. Protective cover; 4. Rectangular groove; 5. Connecting plate; 6. Limiting rod; 7. Connecting spring; 8. Sliding block; 9. Slide groove; 10. Threaded rod; 11. Connecting plate; 12. Rubber sleeve; 13. Groove; 14. Rubber plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Reference Figure 1-5 A horizontal calibration auxiliary device for a 3D printing platform includes a horizontal ruler 1, with a bubble tube 2 inside the horizontal ruler 1. The connection method and calibration principle of the horizontal ruler 1 and the bubble tube 2 are existing technologies and will not be described in detail here. A protective cover 3 is movably fitted on the outside of the horizontal ruler 1, and a rectangular groove 4 is opened on the side of the protective cover 3. The cross-section of the protective cover 3 is set with a U-shaped structure. The protective cover 3 can protect the bubble tube 2, and the rectangular groove 4 can accommodate the connecting plate 5. A connecting plate 5 is inserted inside the rectangular groove 4. The connecting plate 5 has a limiting rod 6 connected laterally on its inner side. The other end of the limiting rod 6 extends through the inner wall of the protective cover 3 into the horizontal ruler 1. The side of the horizontal ruler 1 is provided with two sets of positioning grooves that are compatible with the limiting rod 6. The two sets of positioning grooves are provided to limit the protective cover 3 that is pulled out from the outside of the horizontal ruler 1 or the protective cover 3 that completely covers the outside of the horizontal ruler 1. The side of the protective cover 3 is provided with a slot 13. The slot 13 is provided to facilitate the quick pulling of the horizontal ruler 1 by the staff, so as to effectively improve the convenience of using this device.
[0024] Furthermore, refer to Figure 3 It can be seen that the connecting plate 5 is set with a U-shaped structure, and the sides of the connecting plate 5 are evenly provided with anti-slip textures. The U-shaped structure of the connecting plate 5 makes it easy for workers to quickly pull the connecting plate 5, and the anti-slip textures on the sides of the connecting plate 5 can improve the anti-slip performance when pulling the connecting plate 5.
[0025] Furthermore, refer to Figure 3 It can be seen that the inner side of the connecting plate 5 is symmetrically connected with connecting springs 7, and the other end of the connecting springs 7 is connected to the inner wall of the rectangular groove 4. During use, the connection of the connecting springs 7 can effectively ensure the tightness of the limit rod 6 when it is inserted into the positioning groove on the side of the horizontal ruler 1.
[0026] Furthermore, refer to Figure 3 and Figure 5It can be seen that the inner side of the protective cover 3 is connected to the sliding block 8, and the outer wall of the horizontal ruler 1 is provided with a sliding groove 9 that matches the sliding block 8. During use, the sliding block 8 and the sliding groove 9 can be used to guide the protective cover 3 and the horizontal ruler 1 laterally during sliding, so as to ensure the stable pulling of the protective cover 3 and the horizontal ruler 1.
[0027] Furthermore, refer to Figure 2 and Figure 5 It can be seen that the inner wall of the protective cover 3 is bonded with a rubber plate 14, and the cross-sectional area of the rubber plate 14 is larger than the cross-sectional area of the horizontal ruler 1. In use, the rubber plate 14 with a larger cross-sectional area can effectively prevent the horizontal ruler 1 from directly colliding with the inner wall of the protective cover 3 when it is embedded inside the protective cover 3, so as to protect the end of the horizontal ruler 1.
[0028] Furthermore, refer to Figure 1 It can be seen that a threaded rod 10 is inserted inside the protective cover 3, and the inner side of the threaded rod 10 extends into the sliding block 8. The sliding block 8 has a mating groove that matches the threaded rod 10. A connecting plate 11 is fixedly connected to the side of the threaded rod 10 away from the sliding block 8. The inner wall of the mating groove has an internal thread. During use, the protective cover 3 and each set of sliding blocks 8 can be easily disassembled through the mutual cooperation of the threaded rod 10 and the connecting plate 11, as well as the mating groove inside the sliding block 8. This makes it easy to remove the damaged protective cover 3 from the outside of the level body 1 for replacement.
[0029] Furthermore, refer to Figure 4 It can be seen that the outer side of the connecting plate 11 is fitted with a rubber sleeve 12, and the outer side of the rubber sleeve 12 is evenly provided with anti-slip texture. The rubber sleeve 12 can protect the end of the connecting plate 11, and the anti-slip texture can prevent the operator from slipping when rotating the rubber sleeve 12.
[0030] Working Principle: In use, the operator first pulls the connecting plate 5 horizontally, causing the limiting rod 6 connected to its inner side to be simultaneously stressed. This allows the limiting rod 6 to be pulled out from one of the positioning slots on the side of the horizontal ruler 1, thus releasing the limiting effect on the protective cover 3. The operator then pushes the horizontal ruler 1 to pull it out from inside the protective cover 3. At this time, the sliding groove 9 on the side of the horizontal ruler 1 is subjected to force and slides along the outer surface of the sliding block 8, thereby guiding the horizontal ruler 1. The horizontal ruler 1 is then completely pulled out from inside the protective cover 3. When the time is right, the staff can stop pulling the connecting plate 5, so that the limiting rod 6 can be embedded into another set of positioning grooves on the side of the horizontal ruler 1 to achieve the second limiting of the protective cover 3. Then the staff can place the horizontal ruler 1 at a suitable position above the 3D printing platform for horizontal calibration. After placement, the staff can use the bubble tube 2 to judge whether the 3D printing platform is level. After calibration, the staff can pull the connecting plate 5 horizontally again and embed the horizontal ruler 1 into the protective cover 3 for protection. The above is the complete working principle of this utility model.
[0031] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.
[0032] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
[0033] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. A 3D printing platform horizontal calibration auxiliary device, comprising a level body (1), characterized in that, The inside of the level body (1) is provided with a bubble tube (2), the outside of the level body (1) is movably sleeved with a protective cover (3), a rectangular slot (4) is formed in the side of the protective cover (3), a connecting plate (5) is inserted into the rectangular slot (4), a limiting rod (6) is transversely connected to the inner side of the connecting plate (5), the other end of the limiting rod (6) extends into the level body (1) through the inner wall of the protective cover (3), two groups of positioning grooves matched with the limiting rod (6) are formed in the side of the level body (1), and a notch (13) is formed in the side of the protective cover (3).
2. The 3D printing platform level calibration aid of claim 1, wherein, The connecting plate (5) is provided in a U-shaped structure, and anti-skid lines are uniformly formed in the side of the connecting plate (5).
3. The 3D printing platform horizontal calibration auxiliary device according to claim 1, wherein, The inner side of the connecting plate (5) is symmetrically connected with a connecting spring (7), and the other end of the connecting spring (7) is connected with the inner wall of the rectangular slot (4).
4. The 3D printing platform level calibration aid of claim 1, wherein, The inner side of the protective cover (3) is connected with a sliding block (8), and the outer wall of the level body (1) is provided with a sliding groove (9) matched with the sliding block (8).
5. The 3D printing platform level calibration aid of claim 4, wherein, The inner wall of the protective cover (3) is glued with a rubber plate (14), and the cross-sectional area of the rubber plate (14) is greater than that of the level body (1).
6. The 3D printing platform level calibration aid of claim 1, wherein, The inside of the protective cover (3) is inserted with a threaded rod (10), and the inner side of the threaded rod (10) extends into the sliding block (8), the inside of the sliding block (8) is provided with a butt joint groove matched with the threaded rod (10), and the side, away from the sliding block (8), of the threaded rod (10) is fixedly connected with a connecting disc (11).
7. The 3D printing platform level calibration aid of claim 6, wherein, The outer side of the connecting disc (11) is sleeved with a rubber sleeve (12), and anti-skid lines are uniformly formed in the outer side of the rubber sleeve (12).