A level bubble mounting structure suitable for automated calibration

By adding a bubble holder and pre-tightening mechanism to the spirit level and combining it with an automated system for calibration, the problem of low efficiency in installing vertical bubble holders on the spirit level was solved, achieving efficient and precise automated installation.

CN116242314BActive Publication Date: 2026-05-29QINGDAO KAIPU ROAD TOOLS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO KAIPU ROAD TOOLS CO LTD
Filing Date
2023-02-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing spirit levels have gaps due to production errors when installing vertical bubble level, which affects production efficiency and is not suitable for automated calibration, making it difficult to integrate with automated equipment.

Method used

A bubble holder and pre-tightening mechanism are added to the level, and the bubble holder is fixed by an elastic telescopic plate. Combined with the visual inspection of the automated system and the calibration of the robotic arm, the precise positioning and automated installation of the bubble can be achieved.

Benefits of technology

It improves the installation efficiency and accuracy of the vertical bubble level, adapts to the needs of automated production, ensures the bubble's stable position during adhesive curing, and enhances production efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116242314B_ABST
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Abstract

The application discloses a level vertical bubble mounting structure suitable for automatic calibration, characterized in that the level vertical bubble mounting structure comprises a level body, a vertical bubble structure arranged on one side of the level body, a mounting frame, a bubble holder, a bubble and a cover; the bubble is fixedly connected in the bubble holder, the bubble holder is mounted in the mounting frame, the mounting frame is clamped and fixed in the right side of the level body, the cover is clamped with the mounting frame, and the mounting frame is provided with a pre-tightening mechanism. The bubble holder is additionally arranged between the bubble and the mounting frame, the pre-tightening mechanism is arranged in the mounting frame, the bubble holder is mounted in the mounting frame, and the pre-tightening is fixed through the pre-tightening mechanism, so that the adjustment and calibration are facilitated, the position of the calibrated level frame can be prevented from being changed, and the mounting efficiency of the level vertical bubble is improved.
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Description

Technical Field

[0001] This invention relates to the field of spirit level technology, and more specifically to a vertical bubble mounting structure for a spirit level suitable for automated calibration. Background Technology

[0002] In the current production process of installing vertical bubble levels on spirit levels, the bubble is usually directly installed into the bubble holder and then fixed with adhesive. However, due to certain production errors in both the bubble holder and the bubble, gaps exist between them. After calibration, adhesive is applied, but the adhesive requires a certain amount of time to cure. Therefore, the bubble may move within the holder after adhesive application. Waiting for the adhesive to cure wastes a lot of time and affects production efficiency. Moreover, with the increasing automation of industrial production, the existing vertical bubble level installation structure is not suitable for use with automated equipment, making it difficult to achieve automation and improve installation efficiency. Summary of the Invention

[0003] To address the shortcomings of existing technologies, a vertical bubble mounting structure for a level ruler suitable for automated calibration is proposed, which solves the problems of low efficiency and inability to guarantee the production quality of the level ruler when manually installing and calibrating the bubble in the aforementioned background technologies.

[0004] To achieve the above objectives, the present invention proposes the following technologies:

[0005] A vertical bubble mounting structure for a level suitable for automated calibration includes a level body, a vertical bubble structure on one side of the level body, and the vertical bubble structure includes a mounting bracket, a bubble holder, a bubble, and a cap.

[0006] The bubble is fixedly connected inside the bubble holder, which is installed inside the mounting bracket. The mounting bracket is snapped and fixed inside the spirit level body. The cover is snapped into the mounting bracket, and a pre-tightening mechanism is provided inside the mounting bracket.

[0007] This application adds a bubble holder between the bubble and the mounting frame in a traditional installation structure, and correspondingly sets a pre-tightening mechanism inside the mounting frame. The bubble is pre-fixed in the bubble holder, and the bubble holder, along with the bubble, is installed from the front of the mounting frame. During installation, the elastic expansion joint in the pre-tightening mechanism is compressed, and the elastic expansion joint generates a pushing force on the bubble holder, pushing the bubble holder against the rib on the inner side of the mounting frame, thus achieving the fixed pre-tightening of the bubble holder within the mounting frame. Then, the bubble holder is calibrated. The setting of the elastic expansion joint allows the bubble holder to be rotated and calibrated while its position is fixed. After calibration, glue is dripped through the glue dripping channel inside the mounting frame to fix the bubble holder and the bubble. The setting of the pre-tightening mechanism prevents the bubble holder and the bubble from moving within the mounting frame during the glue curing period after calibration, improving the efficiency of manual installation. Finally, the cap is snapped into place and fixed to the mounting frame to complete the installation.

[0008] Furthermore, the bubble holder is circular in shape, with several first drop glue grooves on the inner wall surface, and a bubble is fixedly connected inside. A first calibration groove is provided on the top front side of the bubble holder, and the first calibration groove and the bubble reference point are on the same vertical plane. Several adjustment grooves are provided at equal intervals on the circumference of the front side of the bubble holder.

[0009] Furthermore, the mounting frame is circular, with a second calibration groove on the top of its inner wall. The pre-tightening mechanism includes a rib, a movable groove, and an elastic telescopic piece. The rib is located on the inner wall of the mounting frame and protrudes towards the center of the mounting frame. Its top is an arc shape that adapts to the outside of the bubble holder. A second drip groove is opened in the middle of the outside of the rib. The movable groove is located at the bottom of the mounting frame, and the elastic telescopic piece is movably connected inside the movable groove.

[0010] Furthermore, the mounting bracket has connecting grooves on both the left and right sides, and a connecting port is opened in the middle of the outer side of the connecting groove. The two connecting grooves are symmetrical about the second calibration groove.

[0011] Furthermore, the cover is circular in shape, with connecting legs on the left and right sides. Connecting legs have connecting blocks at their ends, and the connecting legs slide in the connecting groove. The connecting blocks are adapted to the size of the connecting opening.

[0012] Meanwhile, the mounting structure in this application can be used in conjunction with an automated system. A vision camera detects the relative position of the second calibration slot on the mounting bracket and the first calibration slot on the bubble level holder, converting the positional information into data and transmitting it to a data processing system. The data processing system analyzes the positional deviation between the calibration slots, generates instructions that are sent to the robotic arm, and controls the robotic arm's gripper to engage with the adjustment slot on the bubble level holder to rotate and adjust the position of the bubble level holder until the two calibration slots are aligned. Then, the bubble level holder is fixed with epoxy resin. By combining the mounting structure in this application with an automated system, the installation efficiency of the level and vertical bubble level holder will be significantly improved.

[0013] The comprehensive advantages of this invention include: The invention has a simple structure and reasonable design. Compared to the prior art where the bubble level is directly mounted onto the spirit level body via a mounting bracket, this application adds a bubble holder between the bubble level and the mounting bracket, and includes a pre-tightening mechanism within the mounting bracket. The bubble holder is installed within the mounting bracket and secured by the pre-tightening mechanism, facilitating adjustment and calibration while preventing changes in the position of the level bracket after calibration. This improves the installation efficiency of the vertical bubble level on the spirit level, while ensuring the position of the vertical bubble level and maintaining the accuracy of the spirit level. Furthermore, the installation structure of this application can be integrated with an automated system. The adjustment slot on the bubble holder is easily gripped by a robotic arm for automated calibration. The use of an automated system will further improve the installation efficiency of the vertical bubble level on the spirit level. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the level ruler according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the water bubble installation structure according to an embodiment of the present invention;

[0016] Figure 3 This is an embodiment of the present invention. Figure 2 Enlarged view of a portion;

[0017] Figure 4 This is a schematic diagram of the bubble holder structure according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the mounting bracket structure according to an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the sealing structure according to an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the installation structure of a vertical water bubble in the prior art.

[0021] Legend: 1. Level body; 2. Vertical bubble structure; 3. Mounting bracket; 4. Bubble holder; 5. Cover; 6. Bubble; 7. Adjustment groove; 8. First calibration groove; 9. Connecting groove; 10. Rib; 11. Glue dripping pipe; 12. Second calibration groove; 13. Movable groove; 14. Elastic telescopic piece; 15. Connecting leg; 16. Connecting block. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0023] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Terms such as "upper," "lower," "left," "right," and "top" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are used only for the convenience of describing the invention and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0024] like Figure 7As shown, in the prior art, the bubble is directly installed into the bubble holder, calibrated, and then glue is applied for fixation. Due to production errors and installation requirements, there is a gap between the bubble and the bubble holder. After applying the glue, it takes a period of time for the glue to cure. During this period, the bubble can easily move within the bubble holder. If we wait for the glue to fully cure, it will waste a lot of time and the production efficiency will be very low.

[0025] like Figures 1 to 6 As shown, a vertical bubble mounting structure for a level ruler suitable for automated calibration includes a level ruler body 1, a vertical bubble structure 2 on one side of the level ruler body 1, and the vertical bubble structure 2 includes a mounting bracket 3, a bubble holder 4, a bubble 6, and a cover 5.

[0026] Bubble 6 is fixedly connected inside bubble holder 4, mounting bracket 3 is snapped and fixed inside level body 1, cover 5 is snapped into mounting bracket 3, and mounting bracket 3 is provided with pre-tightening mechanism inside.

[0027] Among them, the bubble holder 4 is in the shape of a ring, and several first glue grooves are opened on the inner wall surface. The bubble 6 is fixedly connected inside. The bubble 6 is fixed by glue dripping through the first glue grooves. A first calibration groove 8 is opened on the top front side of the bubble holder 4. The first calibration groove 8 and the bubble reference point are on the same vertical plane.

[0028] The bubble holder 4 is installed inside the mounting frame 3, which is circular. A second calibration groove 12 is provided on the top of its inner wall. The second calibration groove 12 and the first calibration groove 8 serve a positioning function. Adjustment is made to align the first calibration groove 8 and the second calibration groove 12 in a straight line to achieve calibration. The pre-tightening mechanism includes a rib 10, a movable groove 13, and an elastic telescopic piece 14. The rib 10 is located on the inner wall of the mounting frame 3 and protrudes towards the center of the mounting frame 3. Its top is arc-shaped to fit the outside of the bubble holder 4. The movable groove 13 is located at the bottom of the mounting frame 3, and the elastic telescopic piece 14 is movably connected inside the movable groove 13. The bubble holder 4 is then installed... During the installation process on the mounting bracket 3, the bottom of the bubble frame 4 contacts and is squeezed by the elastic expansion joint 14. The elastic expansion joint 14 slides and deforms in the sliding groove 13, generating a pressing force that pushes the bubble frame 4 onto the rib 10, thus fixing the bubble frame 4. Because of the elastic force generated by the elastic expansion joint 14, the bubble frame 4 can be rotated to achieve the calibration purpose while being fixed. After calibration, the position of the bubble frame 4 will not change. In addition, a second glue groove is provided in the middle of the outer side of the rib 10. Glue is dripped through the second glue groove to fix the calibrated bubble frame 4 to the mounting bracket 3.

[0029] The mounting bracket 3 has connecting grooves 9 on both sides, and a connecting port is opened in the middle of the outer side of the connecting groove 9. The two connecting grooves 9 are symmetrical about the second calibration groove 12. The cover 5 is circular, and connecting legs 15 are provided on both sides. Connecting blocks 16 are provided at the ends of the connecting legs 15. The connecting legs 15 are slidably connected in the connecting groove 9. The connecting blocks 16 are adapted to the size of the connecting port. The cover 5 cooperates with the mounting bracket 3 to protect the vertical water bubble installation structure.

[0030] In addition, several adjustment slots 7 are evenly spaced on the front circumference of the bubble holder 4, which cooperate with the first calibration slot 8 and the second calibration slot 12, making it suitable for use with an automated calibration and debugging system to further improve the installation calibration efficiency.

[0031] This application adds a bubble frame 4 between the bubble 6 and the mounting frame 3, and correspondingly sets a pre-tightening mechanism in the mounting frame 3. The bubble 6 is pre-fixed in the bubble frame 4. The bubble frame 4, together with the bubble 6, is installed into the mounting frame 3. During the installation process, the bubble frame 4 compresses the elastic telescopic piece 14 in the pre-tightening mechanism. The elastic telescopic piece 14 generates a pushing force on the bubble frame 4, pushing the bubble frame 4 against the rib 10 on the inner side of the mounting frame 3, thus achieving the fixed pre-tightening of the bubble frame 4 in the mounting frame 3. Then, the bubble frame 4 is calibrated. The setting of the elastic telescopic piece 14 allows the bubble frame 4 to be rotated and calibrated while fixing its position. After calibration, glue is dripped through the glue dripping pipe on the inner side of the mounting frame 3 to fix the bubble frame 4 and the bubble 6. The setting of the pre-tightening mechanism prevents the bubble frame 4 and the bubble 6 from moving in the mounting frame 3 during the glue curing period after calibration, improving the efficiency of manual installation. Finally, the cover 5 is locked and fixed to the mounting frame 3 to complete the installation.

[0032] Meanwhile, through the adjustment slot 7, the first calibration slot 8, and the second calibration slot 12 in this application, this mounting structure can be used in conjunction with an automated system: a vision camera detects the relative position of the second calibration slot 12 on the mounting bracket 3 and the first calibration slot 8 on the bubble holder 4, converts the position information into data, and transmits it to the data processing system. The data processing system analyzes the positional deviation between the calibration slots, generates instructions, and transmits them to the robotic arm. The robotic arm's gripper engages with the adjustment slot 7 on the bubble holder 4 to rotate and adjust the position of the bubble holder 4 until the two calibration slots are aligned. Then, the bubble holder 4 is fixed with epoxy resin. By combining the mounting structure in this application with an automated system, the installation efficiency of the level and vertical bubble will be greatly improved.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "rotation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Although embodiments of the invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical bubble mounting structure for a level suitable for automated calibration, characterized in that, Includes a spirit level body, and a vertical bubble structure is provided on one side of the spirit level body. The vertical bubble structure includes a mounting bracket, a bubble holder, a bubble, and a cap. The bubble is fixedly connected inside the bubble holder, the bubble holder is installed inside the mounting bracket, the mounting bracket is snapped and fixed inside the spirit level body, the cover is snapped into the mounting bracket, and a pre-tightening mechanism is provided inside the mounting bracket. The bubble holder is circular in shape, with several first glue grooves on the inner wall surface, and a bubble is fixedly connected inside. A first calibration groove is provided on the top front side of the bubble holder, and the first calibration groove and the bubble reference point are on the same vertical plane. Several adjustment grooves are provided at equal intervals on the circumference of the front side of the bubble holder. The mounting frame is circular, with a second calibration groove on the top of its inner wall. The pre-tightening mechanism includes a rib, a movable groove, and an elastic telescopic piece. The rib is located on the inner wall of the mounting frame and protrudes towards the center of the mounting frame. Its top is an arc shape that adapts to the outside of the bubble holder. A second drip groove is opened in the middle of the outside of the rib. The movable groove is located at the bottom of the mounting frame, and the elastic telescopic piece is movably connected inside the movable groove.

2. The vertical bubble mounting structure for a level ruler suitable for automated calibration according to claim 1, characterized in that, The mounting bracket has connecting grooves on its left and right sides, and a connecting opening is provided in the middle of the outer side of the connecting groove. The two connecting grooves are symmetrical about the second calibration groove.

3. The vertical bubble mounting structure for a level suitable for automated calibration according to claim 2, characterized in that, The cover is circular in shape, with connecting legs on the left and right sides. The end of each connecting leg is provided with a connecting block. The connecting leg is slidably connected in the connecting groove, and the connecting block is adapted to the size of the connecting opening.

4. An automated calibration system for a level ruler with a vertical bubble, characterized in that, The level ruler vertical bubble structure adopts the vertical bubble mounting structure as described in any one of claims 1-3, and the automated calibration system includes a vision camera, a data processing system, and a robotic arm.

5. The automated calibration system for a vertical bubble level of a spirit level according to claim 4, characterized in that, The vision camera detects the relative position of the second calibration slot on the mounting bracket and the first calibration slot on the bubble frame, converts the position information into data and transmits it to the data processing system. The data processing system analyzes the positional deviation between the calibration slots, generates instructions and transmits them to the robotic arm, controlling the robotic arm's gripper to cooperate with the adjustment slot on the bubble frame to rotate, adjust and calibrate the position of the bubble frame.

6. The automated calibration system for a vertical bubble level of a spirit level according to claim 5, characterized in that, The robotic arm receives adjustment instructions from the data processing system based on the deviation and rotates the bubble frame until the first calibration slot on the bubble frame and the second calibration slot on the mounting bracket are aligned in a straight line, thus completing the automated calibration.