Common rail tube two-dimensional code laser engraving universal device

Abstract

The utility model discloses a common rail tube two-dimensional code laser engraving universal device, which comprises a bottom plate provided with a through T-shaped groove extending along the length direction; the lower ends of the movable stand columns are fixed in the T-shaped grooves of the bottom plate through T-shaped nut assemblies, and the movable stand columns can transversely slide along the rectangular through grooves so as to be matched with the hole pitches of different common rail pipes; the left positioning block and the right positioning block are mounted on the stand column through the vertical through grooves respectively and can move up and down along the through grooves to meet laser marking focusing; the left positioning block is provided with a positioning pin used for being inserted into a flat position hole in the left side of the common rail pipe, and the right positioning block is provided with a supporting face for supporting the flat position lower plane of the common rail pipe. An elastic steel ball positioning assembly is fixedly installed above the supporting face of the right positioning block at the upper end of the right stand column. The movable stand column is adapted to different hole pitches, the accuracy is guaranteed through focusing of the positioning block, the ingenious elastic steel ball positioning assembly is adopted, and the technical effects of being high in universality, high in engraving accuracy and stable and reliable in positioning are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of common rail tube production technology, and in particular relates to a universal device for laser engraving QR codes on common rail tubes. Background Technology

[0002] As a core component of the fuel injection system, the common rail pipe's information traceability and product management during its production process are crucial. QR code engraving technology, with its advantages of large information capacity, strong resistance to contamination, and ease of automated identification, has become the preferred solution for common rail pipe identification. However, common rail pipe products have complex and diverse specifications, with significant differences between different models in key parameters such as length, flatness orifice diameter, and orifice spacing (according to industry statistics, orifice spacing can vary from 80-270mm). This leads to the following technical bottlenecks faced by traditional laser engraving tooling:

[0003] Specialization limitations: Existing tooling is mostly designed for a single specification, and each common rail pipe requires a dedicated positioning fixture, resulting in a large variety of tooling types and high management costs. Taking a mainstream diesel system supplier as an example, its production line requires multiple types of common rail pipe engraving tooling, leading to high annual maintenance costs.

[0004] Low changeover efficiency: When switching product specifications, the entire set of tooling needs to be replaced, resulting in a long average changeover time, which severely restricts the demand for flexible production.

[0005] Insufficient positioning accuracy: Traditional rigid positioning methods are difficult to adapt to the machining errors of flat holes, which can easily lead to offset of the engraving position or inaccuracy of the focal length.

[0006] Therefore, this utility model designs a modular and reconfigurable laser marking positioning scheme for a common rail tube laser marking QR code universal device. Summary of the Invention

[0007] To address the problems existing in the prior art, this utility model provides a universal device for laser engraving QR codes using a common rail tube.

[0008] This utility model is implemented as follows: a universal device for laser engraving QR codes on common rail tubes includes: a base plate with a through T-shaped groove extending along its length; at least two movable columns, the lower ends of which are fixed in the T-shaped groove of the base plate by a T-shaped nut assembly, and can slide laterally along the rectangular through groove to adapt to the hole spacing of different common rail tubes; a left positioning block and a right positioning block, respectively installed on the columns through vertical through grooves, and can move up and down along the through grooves to meet the focusing during laser engraving; the left positioning block is provided with a positioning pin for inserting into the flat hole on the left side of the common rail tube, and the right positioning block is provided with a support surface for supporting the lower plane of the flat part of the common rail tube; an elastic steel ball positioning assembly is fixedly installed above the support surface of the right positioning block at the upper end of the right column.

[0009] More preferably, the upper part of the T-slot is provided with a rectangular through groove with a width greater than the opening width of the T-slot; the width of the rectangular through groove is equal to the width of the movable column.

[0010] More preferably, the base plate has fixing holes on both sides for connecting a horizontal operating table.

[0011] A further preferred embodiment includes a connecting block fixedly connected to a movable column, and a hollow steel ball seat threadedly connected to the connecting block along the support surface direction perpendicular to the right positioning block; the steel ball seat contains a steel ball with a diameter not less than the inner diameter of the common rail tube flat hole, and a compression spring is provided on the upper part of the steel ball, with a spring adjusting screw threadedly connected to the upper part of the steel ball seat of the compression spring.

[0012] A further preferred embodiment is that a locking nut is threaded onto the steel ball seat on the upper surface of the connecting block.

[0013] The advantages and technical effects of this utility model are as follows: The overall technical effect of the universal device for laser engraving QR codes on common rail tubes is significant. Its movable column slides within a rectangular slot on the base plate, adapting to different hole spacings on common rail tubes, greatly enhancing the device's versatility. The left and right positioning blocks can move up and down along the vertical slot, meeting the focusing requirements of laser engraving and ensuring engraving accuracy.

[0014] The elastic steel ball positioning component is ingeniously designed. The connecting block is firmly fixed to the column, and the threaded connection of the steel ball seat facilitates installation and adjustment to meet the positioning needs of flat sections with different thicknesses. The steel ball size adaptability enables precise positioning, the compression spring provides elastic support to enhance stability, the spring adjusting screw can adjust the pressure acting on the steel ball to ensure that the common rail tube flat section is in a horizontal state, and the locking nut further ensures the stability and reliability of the component.

[0015] In addition, fixing holes are provided on both sides of the base plate for easy connection to a horizontal operating table, enhancing the overall stability and ease of installation of the device. In actual operation, the device can be precisely adjusted according to the common rail pipe to achieve stable positioning. The laser scanner can then be turned on to smoothly engrave QR codes, improving engraving efficiency and quality while reducing production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 AA section view;

[0018] Figure 3 yes Figure 1 BB section view.

[0019] In the diagram: 1. Base plate; 101. T-slot; 102. Fixing hole; 2. T-nut assembly; 3. Movable column; 301. Vertical through slot; 4. Left positioning block; 5. Positioning pin; 6. Right positioning block; 7. Steel ball; 8. Steel ball seat; 9. Connecting block; 10. Compression spring; 11. Spring adjusting screw; 12. Locking nut. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0021] Please see Figures 1 to 3 A universal device for laser engraving QR codes on common rail tubes includes: a base plate 1 with a through T-slot 101 extending along its length; at least two movable columns 3, the lower ends of which are fixed to the T-slot of the base plate by T-nut assemblies 2, and can slide laterally along the rectangular through slot to adapt to the hole spacing of different common rail tubes, thus having strong versatility; a left positioning block 4 and a right positioning block 6, respectively installed on the columns 3 through vertical through slots 301, and can move up and down along the through slots to meet the laser engraving focusing and ensure engraving accuracy; the left positioning block 4 is provided with a positioning pin 5 for inserting into the flat hole on the left side of the common rail tube, and the right positioning block 6 is provided with a support surface for supporting the lower plane of the flat part of the common rail tube; an elastic steel ball positioning assembly is fixedly installed above the support surface of the right positioning block 6 at the upper end of the right column to ensure accurate positioning of the common rail tube. The overall device is reasonably designed, improving engraving efficiency and quality, and reducing production costs.

[0022] Preferably, the upper part of the T-slot has a rectangular through slot with a width greater than the opening width of the T-slot; the width of the rectangular through slot is equal to the width of the movable column. This design allows the column to slide stably laterally, adapting to different hole spacings, while limiting the column position to prevent displacement, improving the versatility and stability of the device, and ensuring engraving accuracy.

[0023] Preferably, the base plate has fixing holes 102 on both sides for connecting to a horizontal operating table. This facilitates connection to a horizontal operating table and enhances the overall stability and ease of installation of the device. Alternatively, clamps can be used to fix the entire device in place.

[0024] A further preferred embodiment of the elastic steel ball positioning assembly includes a connecting block 9 fixedly connected to the movable column 3, and a hollow steel ball seat 8 is threadedly connected to the upper edge of the connecting block along the support surface perpendicular to the right positioning block 6; the steel ball seat contains a steel ball 7 with a diameter not less than the inner diameter of the common rail tube flat hole, and a compression spring 10 is provided on the upper part of the steel ball, with a spring adjusting screw 11 threadedly connected to the upper part of the steel ball seat of the compression spring.

[0025] This elastic steel ball positioning component boasts significant technological advantages. The connecting block is fixed to the movable column, ensuring structural stability. The steel ball seat is threaded to the connecting block for easy installation and adjustment. The steel ball's size is adapted to the flat hole of the common rail tube, achieving precise positioning. The compression spring provides elastic support, allowing the steel ball to adaptively adjust its position, enhancing positioning stability. The spring adjusting screw allows for flexible adjustment of the spring pressure to meet the positioning requirements of different common rail tubes. The ingenious overall component design improves positioning accuracy and versatility, ensuring the quality of laser engraving.

[0026] Preferably, a locking nut 12 is threaded onto the upper surface of the connecting block 9 and the steel ball seat 8. This further tightens the steel ball seat, preventing loosening, ensuring the stability and reliability of the elastic steel ball positioning assembly, and improving positioning accuracy.

[0027] In actual operation, firstly, based on the specific spacing of the two holes on the common rail flat section, the distance between the two movable columns needs to be precisely adjusted to ensure the compatibility of the device with the common rail. Next, carefully adjust the height of the left and right positioning blocks to obtain the best laser engraving effect through fine-tuning. Finally, adjust the spring adjusting screw 11 to apply a certain pressure to the steel ball 7.

[0028] Next, accurately fit the flat hole on the left side of the common rail tube onto the locating pin on the left side, ensuring that the lower end face of the flat part on the left side is tightly fitted against the upper surface of the left locating block. Then, using the locating pin as a rotation axis, smoothly insert the flat block on the right side of the common rail tube between the right locating block and the steel ball. During this process, the steel ball will automatically be pressed into the hole of the right flat block under the action of the compression spring, achieving stable positioning. After completing the above operations, simply turn on the laser scanner to smoothly perform the QR code engraving work.

[0029] 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 and improvements 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 universal device for laser engraving QR codes using a common rail tube, characterized in that, include: The base plate (1) has a through T-shaped groove (101) extending along the length direction. At least two movable columns (3) are fixed at their lower ends to the T-groove of the base plate by a T-nut assembly (2), and can slide laterally along the rectangular through groove to adapt to the hole spacing of different common rail pipes. The left positioning block (4) and the right positioning block (6) are respectively installed on the column (3) through the vertical through groove (301) and can move up and down along the through groove to meet the focusing requirements during laser engraving; the left positioning block (4) is provided with a positioning pin (5) for inserting into the flat hole on the left side of the common rail tube, and the right positioning block (6) is provided with a support surface for supporting the lower plane of the flat part of the common rail tube; An elastic steel ball positioning component is fixedly installed above the support surface of the right positioning block (6) at the upper end of the right column.

2. The universal device for laser engraving QR codes using a common rail tube according to claim 1, characterized in that: The upper part of the T-slot is provided with a rectangular through groove with a width greater than the opening width of the T-slot; the width of the rectangular through groove is equal to the width of the movable column.

3. The universal device for laser engraving QR codes using a common rail tube according to claim 1, characterized in that: The base plate has fixing holes (102) on both sides for connecting a horizontal operating table.

4. The universal device for laser engraving QR codes using a common rail tube according to claim 1, characterized in that: The elastic steel ball positioning assembly includes a connecting block (9) fixedly connected to the movable column (3), and a hollow steel ball seat (8) is threadedly connected to the upper edge of the connecting block along the support surface perpendicular to the right positioning block (6); the steel ball seat is provided with a steel ball (7) with a diameter not less than the inner diameter of the flat hole of the common rail pipe, and a compression spring (10) is provided on the upper part of the steel ball, and a spring adjusting screw (11) is threadedly connected to the upper part of the steel ball seat of the compression spring.

5. The universal device for laser engraving QR codes using a common rail tube according to claim 4, characterized in that: A locking nut (12) is threaded onto the steel ball seat (8) on the upper surface of the connecting block (9).

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