Laser code spraying device with precise code printing function

Abstract

The laser code spraying device comprises a conveying belt for conveying a part to be subjected to code spraying and side plates located on the two sides of the conveying belt, the side plates are provided with first driving parts for driving the conveying belt to rotate, the side plates are provided with supports, and the supports are sequentially provided with photoelectric sensors and code spraying devices in the advancing direction of the conveying belt; the side plate is provided with a second driving part below the support, the photoelectric sensor is electrically connected with the first driving part and the second driving part, the output end of the second driving part is provided with a connecting plate, and the connecting plate is provided with an abutting plate capable of abutting against a part to be subjected to code spraying. The first driving piece drives the conveying belt to rotate and convey a to-be-code-sprayed piece, when the to-be-code-sprayed piece passes through the photoelectric sensor, the photoelectric sensor senses the position of the to-be-code-sprayed piece, the first driving piece controls the conveying belt to stop, the second driving piece drives the abutting plate to be matched with the side plate to clamp and fix the to-be-code-sprayed piece, and the code sprayer sprays codes. The position deviation caused by vibration and speed fluctuation of the conveying belt is reduced, and the code spraying precision is improved.

Description

Technical Field

[0001] This application relates to the field of laser marking technology, and in particular to a laser marking device for precise marking. Background Technology

[0002] In today's industrial production and commodity circulation, product identification plays a crucial role. With the ever-increasing market demand for product traceability, anti-counterfeiting, and brand image building, laser marking technology has emerged. With its high precision, permanence, and pollution-free nature, it has gradually replaced traditional ink-based marking methods, becoming the preferred means for modern enterprises to give their products unique identification. From marking production dates on food and beverages to printing serial numbers on electronic and electrical products, laser marking devices are widely used in various industries and deeply integrated into all aspects of manufacturing.

[0003] In existing technologies, most laser marking devices use a conveyor belt to transport the parts to be marked. The parts to be marked, such as plastic shells, pass through the marking area sequentially with the conveyor belt to complete the marking process.

[0004] Regarding the aforementioned technologies, the inventors believe that since the parts to be coded are coded during transportation on a conveyor belt, the mechanical vibration and speed fluctuations of the conveyor belt itself will affect the positional accuracy of the parts to be coded. Utility Model Content

[0005] The purpose of this application is to provide a laser marking device for precise marking, so as to improve the problem that the marking of the parts to be marked is affected by the marking process during transportation on the conveyor belt.

[0006] This application provides a laser marking device for precise coding, which adopts the following technical solution:

[0007] A laser marking device for precise coding includes a conveyor belt for transporting the part to be marked and side plates located on both sides of the conveyor belt. The side plates are provided with a first driving component for driving the conveyor belt to rotate. The side plates are provided with a bracket, and the bracket is provided with a photoelectric sensor and a marking device in sequence along the direction of travel of the conveyor belt. The side plates are provided with a second driving component below the bracket. The photoelectric sensor is electrically connected to the first driving component and the second driving component. The output end of the second driving component is provided with a connecting plate, and the connecting plate is provided with a stop plate that can abut against the part to be marked.

[0008] By adopting the above technical solution, the first drive unit drives the conveyor belt to rotate and transport the item to be printed. When the item to be printed passes the photoelectric sensor, the photoelectric sensor senses the position of the item to be printed. The first drive unit controls the conveyor belt to stop, and the second drive unit drives the abutment plate to cooperate with the side plate to clamp and fix the item to be printed. The inkjet printer then prints the code, which helps to reduce the position deviation caused by the vibration and speed fluctuation of the conveyor belt and improve the accuracy of the printing.

[0009] Optionally, the side plate is provided with baffle strips along the conveyor belt traveling direction to cooperate with the abutment plate to hold the inkjet printing machine parts.

[0010] By adopting the above technical solution, the baffle strip and the abutment plate cooperate to form a stable clamping structure, which helps to stably clamp the parts to be printed.

[0011] Optionally, the side plate of the conveyor belt away from the baffle strip is inclinedly provided with a guide plate that drives the part to be printed to fit against the baffle strip.

[0012] By adopting the above technical solution, when the part to be coded is transported on the conveyor belt, it will slide along the inclined guide plate, thereby gradually conforming to the baffle strip, realizing preliminary position correction, improving positioning efficiency and accuracy, and at the same time, it can adapt to parts to be coded at different placement angles, enhancing the versatility of the device.

[0013] Optionally, one end of the guide plate is rotatably connected to the side plate, the guide plate is provided with a sliding groove, a rod is slidably engaged in the sliding groove, and the side plate is provided with a plurality of insertion holes for inserting the rod at the end away from the guide plate.

[0014] By adopting the above technical solution, the tilt angle of the guide plate can be changed by sliding the rod in the chute and inserting the rod into different holes. The tilt angle of the guide plate can be flexibly adjusted according to the different sizes, shapes and transportation requirements of the parts to be printed, so that the device can adapt to diverse production needs.

[0015] Optionally, the end of the chute away from the rotating end of the guide plate is open.

[0016] By adopting the above technical solution, it is easier to insert or remove the insertion rod from the opening, thus improving the operability and maintenance efficiency of the insertion rod.

[0017] Optionally, the insertion rod is provided with a limiting plate that abuts against the side plate.

[0018] By adopting the above technical solution, the insertion depth of the limit plate is standardized, which reduces the deviation of the guide plate tilt angle caused by human operation factors, reduces operation error, and improves the overall reliability and stability of the device.

[0019] Optionally, the outer wall of the side plate is provided with a fixing nut that is threadedly connected to the end of the insertion rod away from the guide plate.

[0020] By adopting the above technical solution, the fixing nut enhances the firmness of the connection between the insertion rod and the side plate, reduces the possibility of the insertion rod shifting due to vibration and other factors during the operation of the device, improves the stability of the guide plate tilt angle, and helps to provide a stable and reliable guiding effect for the parts to be printed.

[0021] Optionally, a number of elastic elements are provided between the connecting plate and the abutment plate.

[0022] By adopting the above technical solution, when the abutment comes into contact with the workpiece to be printed, the elastic element will undergo elastic deformation, buffering the impact force of the abutment on the workpiece to be printed and protecting the workpiece to be printed.

[0023] Optionally, the elastic element is provided with a telescopic rod, and the two ends of the telescopic rod are fixed to the connecting plate and the abutment plate, respectively.

[0024] By adopting the above technical solution, the telescopic rod plays a guiding and supporting role during the expansion and contraction of the elastic element, which helps the elastic element to expand and contract in a straight line, helps the pressure plate to apply pressure to the inkjet-printed part to be stabilized, and improves the stability of clamping.

[0025] Optionally, an elastic pad is provided on the side of the abutment near the baffle strip.

[0026] By adopting the above technical solution, the elastic pad increases friction to make the part to be printed more stable during the clamping process, reducing positional changes caused by minor vibrations.

[0027] In summary, this application includes at least one of the following beneficial technical effects of a laser marking device for precise coding:

[0028] 1. Drive component one drives the conveyor belt to rotate and transport the item to be printed. When the item to be printed passes the photoelectric sensor, the photoelectric sensor senses the position of the item to be printed. Drive component one controls the conveyor belt to stop. Drive component two drives the abutment plate to cooperate with the side plate to clamp and fix the item to be printed. The inkjet printer prints the code, which helps to reduce the position deviation caused by the vibration and speed fluctuation of the conveyor belt and improve the accuracy of the printing.

[0029] 2. When the part to be printed is transported on the conveyor belt, it will slide along the inclined guide plate, thereby gradually conforming to the baffle strip, achieving preliminary position correction, improving positioning efficiency and accuracy, and at the same time, it can adapt to parts to be printed at different placement angles, enhancing the versatility of the device.

[0030] 3. By sliding the insert rod in the chute and inserting it into different holes, the tilt angle of the guide plate can be changed. The tilt angle of the guide plate can be flexibly adjusted according to the different sizes, shapes and transportation requirements of the parts to be printed, so that the device can adapt to diverse production needs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a laser marking device for precise coding;

[0032] Figure 2 This is a schematic diagram illustrating the limiting plate structure in the embodiment.

[0033] In the diagram, 1. Conveyor belt; 2. Side plate; 21. Drive component one; 22. Bracket; 23. Socket; 3. Photoelectric sensor; 31. Inkjet printer; 4. Drive component two; 41. Connecting plate; 42. Support plate; 5. Baffle strip; 6. Guide plate; 61. Slide groove; 62. Insert rod; 621. Limiting plate; 7. Fixing nut; 8. Elastic component; 81. Telescopic rod; 9. Elastic pad. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0035] A laser marking device for precise coding, referring to Figure 1 The system includes a conveyor belt 1 for transporting the parts to be printed and side plates 2 located on both sides of the conveyor belt 1. The conveyor belt 1 is used to carry and transport the parts to be printed. The side plates 2 are equipped with a drive unit 21 for driving the conveyor belt 1 to rotate. The drive unit 21 is preferably a stepper motor. The motor shaft of the drive unit 21 is connected to the transmission roller of the conveyor belt 1 by a coupling to realize power transmission. The side plates 2 are equipped with a bracket 22, which is a structure installed on the side plates 2 to support the photoelectric sensor 3 and the inkjet printer 31. The bracket 22 is generally made of metal and is fixed to the side plates 2 by welding or bolting.

[0036] Reference Figure 1 The bracket 22 is equipped with a photoelectric sensor 3 and a coding machine 31 in sequence along the travel direction of the conveyor belt 1. The photoelectric sensor 3 is used to detect the position of the part to be coded. When the part to be coded is detected to have reached the designated position, it will send a signal to the control system. The coding machine 31 is a device used to perform laser coding on the part to be coded. It is connected to the control system through optical fiber or other cables and receives coding instructions.

[0037] Reference Figure 1 Side plate 2 is located below bracket 22 and is equipped with drive component 4. Drive component 4 is a cylinder and is fixedly connected to side plate 2 by bolts. Photoelectric sensor 3 is electrically connected to drive component 21 and drive component 4, so that the signal detected by photoelectric sensor 3 can be transmitted to drive component 21 and drive component 4 in a timely manner, thereby realizing the control of them.

[0038] Reference Figure 1 The output end of the second driving component 4 is provided with a connecting plate 41, which is a metal plate and is fixedly connected to the output shaft of the second driving component 4 by welding. It is used to transmit the power of the second driving component 4 to the abutment plate 42. The connecting plate 41 is provided with an abutment plate 42 that can abut against the workpiece to be printed. The abutment plate 42 is made of hard plastic or metal, and its shape and size are designed according to the size and shape of the workpiece to be printed.

[0039] Reference Figure 1A plurality of elastic elements 8 are provided between the connecting plate 41 and the abutment plate 42. In this embodiment, two elastic elements are preferred. The elastic elements 8 are springs, and the two ends of the springs are fixedly connected to the connecting plate 41 and the abutment plate 42 by welding. The two ends of the telescopic rod 81 are fixed to the connecting plate 41 and the abutment plate 42, respectively. The telescopic rod 81 includes a cylindrical part that is welded and fixed to the connecting plate 41 and a rod that is slidably inserted into the cylindrical part. The end of the rod away from the cylindrical part is welded and fixed to the abutment plate 42. An elastic pad 9 is provided on the side of the abutment plate 42 near the baffle strip 5. The elastic pad 9 is made of rubber and is glued to the abutment plate 42.

[0040] Reference Figure 1 The side plate 2 is provided with a baffle strip 5 along the traveling direction of the conveyor belt 1, which cooperates with the abutment plate 42 to clamp the part to be printed. The baffle strip 5 is a strip structure installed on the side plate 2 corresponding to the abutment plate 42. It is generally made of metal and is fixedly connected to the side plate 2 by bolts. Together with the abutment plate 42, it clamps and positions the part to be printed.

[0041] Reference Figure 1 The side plate 2 of the conveyor belt 1 away from the baffle strip 5 is inclinedly provided with a guide plate 6 that drives the part to be printed to fit against the baffle strip 5. The guide plate 6 is a plate structure installed at an incline, which guides the part to be printed to gradually fit against the baffle strip 5 as it moves on the conveyor belt 1. The guide plate 6 is made of metal.

[0042] Reference Figure 1 One end of the guide plate 6 is rotatably connected to the side plate 2. This rotatability is achieved by installing a shaft at one end of the guide plate 6, which is rolledly connected to the side plate 2 via a bearing, allowing the guide plate 6 to rotate around the shaft. The guide plate 6 is provided with a groove 61, which is a strip-shaped groove formed on the guide plate 6. The end of the groove 61 away from the rotating end of the guide plate 6 is open to facilitate the removal of the insertion rod 62. The insertion rod 62 is slidably engaged within the groove 61. Specifically, the two side walls of the groove 61 are slidably engaged with a rod (not shown in the figure) at one end of the insertion rod 62 via side grooves (not shown in the figure). The insertion rod 62 is a metal rod whose diameter matches the width of the groove 61, allowing it to slide freely within the groove 61.

[0043] Reference Figure 1 The side plate 2 has several insertion holes 23 for inserting the rod 62 at the end away from the guide plate 6. The number of insertion holes 23 is not specifically required. The insertion holes 23 are circular holes on the side plate 2, and their diameter matches the diameter of the rod 62. By inserting the rod 62 into different insertion holes 23, the tilt angle of the guide plate 6 can be adjusted.

[0044] Reference Figure 1 , Figure 2The insertion rod 62 is provided with a limiting plate 621 that abuts against the side plate 2. The limiting plate 621 is a circular plate welded to the insertion rod 62. The outer wall of the side plate 2 is provided with a fixing nut 7 that is threadedly connected to the end of the insertion rod 62 away from the guide plate 6. The fixing nut 7 fastens the insertion rod 62 to the side plate 2 by threading with the insertion rod 62.

[0045] The implementation principle of this application embodiment is as follows:

[0046] In actual use, drive component 21 drives the conveyor belt 1 to rotate, feeding the part to be printed onto the belt. The part to be printed slides along the guide plate 6 on the side plate 2 towards the baffle strip 5 to initially regulate its travel path. When it reaches the sensing area of ​​the photoelectric sensor 3, the photoelectric sensor 3 sends a signal to the control system. The control system controls drive component 21 to operate intermittently on the one hand, and drives drive component 4 on the other hand, so that the connecting plate 41 and the abutment plate 42 move towards the part to be printed. During the process, the elastic component 8 and the telescopic rod 81 buffer and stabilize the force. The abutment plate 42 pushes the part to be printed to fit tightly against the baffle strip 5 to correct the position. Finally, the inkjet printer 31 receives the instruction, focuses and scans, and accurately prints the code at the fixed position. After the process is completed, the components are reset. This helps to reduce the position deviation caused by the vibration and speed fluctuation of the conveyor belt 1 and improve the accuracy of the printing.

[0047] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser marking device for precise coding, characterized in that: The device includes a conveyor belt (1) for transporting the parts to be printed and side plates (2) located on both sides of the conveyor belt (1). The side plates (2) are provided with a drive component (21) for driving the conveyor belt (1) to rotate. The side plates (2) are provided with a bracket (22). The bracket (22) is provided with a photoelectric sensor (3) and a printer (31) in sequence along the direction of travel of the conveyor belt (1). The side plates (2) are provided with a drive component (4) located below the bracket (22). The photoelectric sensor (3) is electrically connected to the drive component (21) and the drive component (4). The output end of the drive component (4) is provided with a connecting plate (41). The connecting plate (41) is provided with a stop plate (42) that can abut against the parts to be printed.

2. The laser marking device for precise coding according to claim 1, characterized in that: The side plate (2) is provided with a baffle strip (5) that cooperates with the abutment plate (42) to hold the inkjet printing machine parts along the traveling direction of the conveyor belt (1).

3. The laser marking device for precise coding according to claim 2, characterized in that: The side plate (2) of the conveyor belt (1) away from the baffle strip (5) is inclinedly provided with a guide plate (6) that drives the part to be printed to adhere to the baffle strip (5).

4. The laser marking device for precise coding according to claim 3, characterized in that: One end of the guide plate (6) is rotatably connected to the side plate (2). The guide plate (6) is provided with a sliding groove (61). A plug rod (62) is slidably engaged in the sliding groove (61). The side plate (2) has several insertion holes (23) through which the plug rod (62) is inserted at the end away from the guide plate (6).

5. The laser marking device for precise coding according to claim 4, characterized in that: The groove (61) is open at one end away from the rotating end of the guide plate (6).

6. The laser marking device for precise coding according to claim 4, characterized in that: The insertion rod (62) is provided with a limiting plate (621) that abuts against the side plate (2).

7. The laser marking device for precise coding according to claim 6, characterized in that: The outer wall of the side plate (2) is provided with a fixing nut (7) that is threadedly connected to the end of the insertion rod (62) away from the guide plate (6).

8. The laser marking device for precise coding according to claim 1, characterized in that: A number of elastic elements (8) are provided between the connecting plate (41) and the abutment plate (42).

9. The laser marking device for precise coding according to claim 8, characterized in that: The elastic element (8) is provided with a telescopic rod (81), and the two ends of the telescopic rod (81) are fixed to the connecting plate (41) and the abutment plate (42) respectively.

10. A laser marking device for precise coding according to claim 2, characterized in that: An elastic pad (9) is provided on the side of the abutment (42) near the baffle strip (5).

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