A laser marking device

Abstract

This utility model discloses a laser marking device, relating to the field of laser processing technology. Specifically, it includes a housing, a laser marking device, a conveying component, and multiple trays. The top of the housing is open; the laser marking device is installed on the open side of the housing, with its output side forming the marking area; the conveying component is located inside the housing; multiple trays are connected at intervals to the conveying component, and their upper surfaces are used to define and support workpieces; wherein, when the conveying component moves the workpieces on the trays to the marking area, the trays away from the marking area serve as the workpiece loading area. By strictly separating the workpiece loading area and the marking area, workpieces on the trays can be assembled in the loading area before, during, or after marking. This not only allows marking and workpiece assembly to be performed simultaneously but also avoids the position of the workpieces and the laser marking device, preventing the risk of collision and greatly improving marking efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to a laser marking device. Background Technology

[0002] The laser marking device is a key piece of equipment in the laser marking process. Its core function is to accurately position the workpiece to be marked and ensure that the laser beam accurately acts on the designated position, thereby improving the marking accuracy and efficiency.

[0003] Before CNC machining, aluminum alloy die-cast parts need to be laser-marked. Currently, the marking device uses a combination of an independent laser marking machine and a tray. When a workpiece needs to be marked, it needs to be assembled on the tray. Once the workpiece and the tray are in place, the laser marking machine marks the workpiece. After the workpiece is marked, it is removed from the tray and replaced with a new workpiece.

[0004] However, the above solution cannot achieve simultaneous workpiece replacement and marking during the marking process, which increases the idle time of the laser marking machine and reduces the overall work efficiency. At the same time, when the workpiece is assembled at the laser marking machine, it is easy to touch the laser marking machine during assembly, which can damage the laser marking machine and further reduce the marking efficiency.

[0005] Therefore, this application aims to solve the problems of long idle time during workpiece assembly, low marking efficiency, and protection of the laser marking device. Utility Model Content

[0006] The main purpose of this utility model is to provide a laser marking device, which aims to improve the work efficiency of workpiece marking, reduce the idle time of the laser marking device, and prevent the laser marking device from being damaged by contact.

[0007] To achieve the above objectives, this utility model proposes a laser marking device, comprising: The outer shell has an open top; A laser marking device is installed on the open side of the housing, with its output side forming a marking area; The conveying component is disposed within the housing; Multiple trays are connected at intervals to the conveying component, and are used above it to define and support the workpiece; When the conveying component moves the workpiece on the tray to the marking area, the tray away from the marking area becomes the workpiece loading area. Furthermore, it includes a positioning component placed in the marking area, which is connected to the open side of the housing. The positioning component includes a linear actuator mounted on the housing, the output direction of which is toward or away from the laser marking device. Furthermore, a positioning block A is provided on one side of the tray, and a positioning block B is connected to the output shaft of the linear actuator. When the linear actuator is triggered, it uses the positioning block B to press the positioning block A and the tray against one side wall of the housing. Furthermore, positioning block A and positioning block B are on the same horizontal plane. When the linear actuator is triggered, it drives positioning block B to move toward positioning block A. Furthermore, the positioning block B passes over the positioning block A and rests against the side of the positioning block A facing the laser marking device. When the linear actuator is triggered, it drives the positioning block B to move away from the laser marking device. Furthermore, the upper surface of the tray is provided with at least three pad pins, on which workpieces are inserted and / or supported. Furthermore, the conveying component includes a drive wheel, a traction member, and a conveying motor connected within the housing. The drive wheel and the traction member are connected to the inner wall of the housing. The traction member is mounted on the drive wheel at both ends of the housing. The output shaft of the conveying motor is connected to the drive wheel. The tray is spaced apart and mounted on the traction member. Furthermore, the traction component is a chain or belt.

[0008] Furthermore, a limit sensor is included, which is connected to the same side of the housing facing the laser marking device, to identify the posture and / or position of the workpiece on the tray.

[0009] Furthermore, the limiting sensor is located away from the feeding area and is at least higher than the support surface of the pad pin.

[0010] The above technical solution has the following advantages: This application employs a conveyor component to move multiple pallets sequentially to the marking area of ​​the laser marking machine, strictly separating the workpiece loading area and the marking area. Before, during, or after marking, the workpieces on the pallets can be assembled in the loading area. This not only allows marking and workpiece assembly to be performed simultaneously but also avoids the position between the workpieces and the laser marking machine, thus preventing the risk of collision and greatly improving marking efficiency. Attached Figure Description

[0011] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a structural diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a structural diagram of the workpiece marking position according to the present invention.

[0012] In the diagram: 1. Control panel; 2. Limit sensor; 3. Tray; 4. Laser marking device; 5. Linear actuator; 6. Drive wheel; 7. Conveyor motor; 8. Bracket; 9. Housing; 10. Pad pin; 11. Positioning block A; 12. Positioning block B; 13. Traction component. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0014] like Figure 1 As shown, a laser marking device includes a housing 9, a laser marking device 4, a conveying component, and multiple trays 3. The top of the housing 9 is open. The laser marking device 4 is installed on the open side of the housing 9, and its output side forms a marking area. The conveying component is located inside the housing 9. Multiple trays 3 are connected to the conveying component at intervals, and their upper surfaces are used to define and support workpieces. When the conveying component moves the workpieces on the trays 3 to the marking area, the trays 3 away from the marking area are the workpiece loading areas. Specifically, the outer shell 9 has a cavity for accommodating the conveying components, with its top open to facilitate the movement of the pallet 3 through the open portion of the outer shell 9. This allows the pallet 3 to move the workpiece on it to the marking area. The laser marking device 4 uses a high-energy laser beam for marking, and the beam on its output side interacts with the surface of the workpiece in the marking area to achieve permanent marking. In the marking area, as long as the conveying components have not yet started, workpiece assembly can be performed on the pallet 3 in the loading area before, during, or after marking, when the workpiece on the pallet 3 is in the marking area. This not only allows marking and workpiece assembly to be performed simultaneously but also avoids the position between the workpiece and the laser marking device 4, thus preventing the risk of collision and greatly improving marking efficiency.

[0015] like Figures 1-3 As shown, this application includes a positioning component placed in the marking area, which is connected to the open side of the housing 9. The positioning component includes a linear actuator 5 mounted on the housing 9, the output direction of the linear actuator 5 being towards or away from the laser marking device 4. The positioning component and the workpiece are as follows... Figure 1 As shown by the arrow, the linear actuator 5 can be installed on either side of the housing 9. It is only necessary to ensure that when the pallet 3 passes through the marking area, the linear actuator 5 presses the pallet 3 against one side wall of the housing 9, which facilitates marking and positioning of the workpiece.

[0016] like Figure 1 and Figure 3As shown, this application takes the linear actuator 5 located on the opposite side of the laser marking machine 4 as an example. A positioning block A11 is provided on one side of the tray 3, and a positioning block B12 is connected to the output shaft of the linear actuator 5. When the linear actuator 5 is triggered, it uses the positioning block B12 to abut the positioning block A11 and the tray 3 against one side wall of the housing 9. The positioning block B12 is installed on the output shaft of the linear actuator 5, and the positioning block A11 is installed on the tray 3. Preferably, the positioning block A11 is located at the edge of the tray 3, especially close to the edge of the linear actuator 5, so that the linear actuator 5 can abut against the positioning block A11 through the positioning block B12, thereby limiting the position of the tray 3.

[0017] like Figure 3 As shown, in one embodiment of this application, positioning block A11 and positioning block B12 are on the same horizontal plane. When the linear actuator 5 is triggered, it drives positioning block B12 to move toward positioning block A11. The linear actuator 5 drives positioning block B12 toward positioning block A11, thereby causing positioning block A11 and tray 3 to come into close contact with the laser marking device 4, ensuring that tray 3 is pressed firmly against the side wall of the housing 9 near the laser marking device 4.

[0018] As an alternative embodiment of this application, positioning block B12 passes over positioning block A11 and rests against the side of positioning block A11 facing the laser marking device 4. When the linear actuator 5 is triggered, it drives positioning block B12 to move away from the laser marking device 4. Positioning block B12 is shaped like a zigzag or an L-shape. When the tray 3 moves to the marking area, positioning block B12 does not contact positioning block A11, and the end of positioning block B12 is located on the side of positioning block A11 closest to the laser marking device 4. At this time, the output shaft of the linear actuator 5 retracts, pulling positioning block A11 through the end of positioning block B12, causing the tray 3 to press tightly against the side wall of the outer casing 9 away from the laser marking device 4.

[0019] In both of the above methods, with redundant conveying components, regardless of which side of the outer casing 9 the pallet 3 leans against, it can be pressed against the side wall of the outer casing 9 after moving a small distance. If the pallet 3 moves the workpiece toward the laser marking device 4, the distance between the workpiece and the laser marking device 4 can be shortened, increasing the laser beam's effective area. If the pallet 3 moves the workpiece away from the laser marking device 4, the risk of metal spatter from the laser marking device 4 contaminating the mirror surface can be reduced. These two methods need to be selected differently depending on the workpiece's structure. In this application, the workpiece is an aluminum alloy die-cast part with an irregular external shape, and the marking position is on the bottom of the workpiece. Figure 4 As indicated by the arrow, it is necessary to increase the effective area of ​​the laser beam.

[0020] In this application, the linear actuator 5 can be a variety of products, such as pneumatic pipes, hydraulic cylinders, electric cylinders, lead screw actuators, etc., and there is no limitation on the selection here.

[0021] like Figure 3 As shown, at least three pad pins 10 are provided on the upper surface of the tray 3, and workpieces are inserted into and / or supported on the pad pins 10. Some of the pad pins 10 have plugs at their top ends for insertion into the bottom of the workpiece, thus restricting the workpiece. Simultaneously, some pad pins 10 also have supporting surfaces to support the bottom of the workpiece. The multiple pad pins 10 work together to provide support and positioning, raising the workpiece a certain distance on the tray 3, making it easier for the laser marking device 4 to align with the marking position on the workpiece.

[0022] like Figure 1 and Figure 2 As shown, the conveying component includes a drive wheel 6, a traction member 13, and a conveying motor 7 connected inside the housing 9. The drive wheel 6 and the traction member 13 are connected to the inner wall of the housing 9. The traction member 13 is mounted on the drive wheels 6 at both ends of the housing 9. The output shaft of the conveying motor 7 is connected to the drive wheels 6. The trays 3 are spaced apart and mounted on the traction member 13. Preferably, the conveying motor 7 is installed at the bottom of the housing 9 to conceal the drive wheels 6 inside the housing 9. A bracket 8 is installed at the bottom of the housing 9, and the conveying motor 7 can also be partially mounted on the bracket 8. The output shaft of the conveying motor 7 transmits torque to one of the drive wheels 6 via a belt or gear. The drive wheel 6 drives the traction member 13 to rotate, thereby moving the multiple trays 3 connected to it. In this application, the traction member 13 is a chain or belt. Considering the weight of the workpiece, the traction member 13 is preferably a chain. Correspondingly, the drive wheel 6 is a sprocket driving the chain.

[0023] like Figure 1 As shown, this application includes a limit sensor 2 connected to the same side of the housing 9 facing the laser marking machine 4, used to identify the posture and / or position of the workpiece on the tray 3. A control panel 1 is also installed on the housing 9. The control panel 1 is used to monitor the status of the laser marking machine 4, the conveyor motor 7, and various sensors, such as the limit sensor 2 described below. The limit sensor 2 is also installed on the housing 9 to detect whether a workpiece exists on the tray 3 in the marking area or other areas, and can also detect whether the workpiece is correctly positioned on the tray 3.

[0024] Specifically, when the limit sensor 2 is installed in the marking area, if the workpiece on the tray 3 is not placed, the limit sensor 2 will send the acquired signal to the control panel 1, and the control panel 1 will stop the laser marking machine 4 from working; or if the limit sensor 2 detects that the workpiece on the tray 3 is not placed in the correct position, the limit sensor 2 will send the signal to the control panel 1, and the control panel 1 will also stop the laser marking machine 4 from working until the workpiece on the tray 3 is placed in the correct position.

[0025] The aforementioned limit sensor 2 can use an ultrasonic detector or an infrared sensor to determine whether a workpiece is placed on the tray 3. By measuring the time difference of ultrasonic waves reflected on the workpiece surface, the distance and position of the workpiece can be calculated, thereby obtaining whether the posture of the workpiece is accurate. Alternatively, it can determine whether there is a workpiece on the tray 3 by the obstruction or reflection of the light beam, or determine whether the posture of the workpiece is properly assembled by the intensity of the light beam reflection.

[0026] like Figure 3 As shown in this application, the limit sensor 2 is located away from the loading area and is at least higher than the support surface of the pad pin 10. This design ensures that the limit sensor 2 can obtain the workpiece information of the tray 3 in real time, so as to avoid interference from the pad pin 10 or the positioning block A11 on the tray 3, which would lead to misjudgment by the limit sensor 2.

[0027] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A laser marking device, characterized in that, include: The outer shell (9) has an open top; A laser marking device (4) is installed on the open side of the housing (9), and its output side forms a marking area; A conveying component is disposed within the housing (9); Multiple trays (3) are connected at intervals to the conveying component, and are used above to define and support the workpiece; When the conveying component moves the workpiece on the tray (3) to the marking area, the tray (3) away from the marking area is the workpiece loading area.

2. The laser marking device as described in claim 1, characterized in that, The device includes a positioning component placed in the marking area, which is connected to the open side of the housing (9). The positioning component includes a linear actuator (5) mounted on the housing (9), the output direction of which is toward or away from the laser marking device (4).

3. The laser marking apparatus of claim 2, wherein A positioning block A (11) is provided on one side of the tray (3), and a positioning block B (12) is connected to the output shaft of the linear actuator (5). When the linear actuator (5) is triggered, it uses the positioning block B (12) to press the positioning block A (11) and the tray (3) against one side wall of the outer shell (9).

4. The laser marking apparatus of claim 3, wherein The positioning block A (11) and the positioning block B (12) are on the same horizontal plane. When the linear actuator (5) is triggered, it drives the positioning block B (12) to move toward the positioning block A (11).

5. The laser marking apparatus of claim 3, wherein The positioning block B (12) passes over the positioning block A (11) and rests on the side of the positioning block A (11) facing the laser marking device (4). When the linear actuator (5) is triggered, it drives the positioning block B (12) to move away from the laser marking device (4).

6. The laser marking apparatus of claim 1, wherein The upper surface of the tray (3) is provided with at least three pad pins (10), on which workpieces are inserted and / or supported.

7. The laser marking apparatus of claim 1, wherein The conveying component includes a drive wheel (6), a traction member (13), and a conveying motor (7) connected inside the housing (9). The drive wheel (6) and the traction member (13) are connected to the inner wall of the housing (9). The traction member (13) is mounted on the drive wheel (6) at both ends of the housing (9). The output shaft of the conveying motor (7) is connected to the drive wheel (6). The tray (3) is installed at intervals on the traction member (13).

8. The laser marking apparatus of claim 7, wherein, The traction component (13) is a chain or belt.

9. The laser marking device as described in claim 6, characterized in that, Includes a limit sensor (2), which is connected to the same side of the housing (9) facing the laser marking device (4) to identify the posture and / or position of the workpiece on the tray (3).

10. The laser marking apparatus as described in claim 9, characterized in that, The limiting sensor (2) is located away from the feeding area and is at least higher than the support surface of the pad pin (10).

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