Low-color-difference laser etching device

Abstract

The utility model discloses a low-color-difference laser carving device, which comprises a laser carving machine, a laser light source and a laser light source, the conveying track is used for conveying the material belt; the upper pressing plate is arranged on the upper side of the conveying track and used for limiting the position of the material belt in the conveying track, preventing the material belt from being separated from the conveying track and ensuring Z-direction repeated positioning consistency of the product, and a laser carving hole is formed in the upper pressing plate, so that a laser beam conveniently penetrates through the laser carving hole to conduct laser carving on the surface of the product on the material belt on the conveying track; the elastic pressing head assembly comprises an elastic pressing head and a jacking driving part, the elastic pressing head is connected with the jacking driving part, and the jacking driving part drives the elastic pressing head to move towards the conveying track and presses the product on the material belt on the upper pressing plate; by means of the mode, the position consistency of products on the material belt at the laser etching machining position can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving technology, and in particular to a low color difference laser engraving device. Background Technology

[0002] Laser engraving technology, as a high-precision surface processing method, is widely used in marking and decoration of electronic components, precision instruments, and other fields. In existing technologies, to achieve stability in laser engraving color difference, the uniformity of energy distribution is typically ensured by optimizing laser pulse parameters, controlling beam quality, and adjusting the scanning path. However, in actual production processes, insufficient positional stability of the processed parts remains a significant cause of color difference fluctuations.

[0003] Traditional laser engraving fixtures mostly use rigid fixing methods. However, during high-speed laser engraving or continuous processing, mechanical vibration, external stress, or gaps in the fixture's own structure can cause micron-level displacement of the workpiece. Such displacement directly disrupts the precise matching between the laser beam and the preset path, causing the laser's point of action to shift, resulting in uneven energy distribution in the character filling area, and consequently, local color differences. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a low color difference laser engraving device that can ensure the positional consistency of products on the material strip at the laser engraving processing position.

[0005] To solve the above-mentioned technical problems, the present invention provides a low color difference laser engraving device, comprising: a laser engraving machine that emits a laser beam; and a transmission track for transporting material strips.

[0006] The upper pressure plate is set on the upper side of the conveyor track to limit the position of the material strip in the conveyor track, prevent the material strip from leaving the conveyor track, and ensure the consistency of product Z-axis repeatability positioning. The upper pressure plate has laser engraving holes, which facilitates the laser beam to pass through the laser engraving holes to laser engrave the surface of the product on the material strip on the conveyor track.

[0007] The spring-loaded pressure head assembly includes an elastic pressure head and a lifting drive. The elastic pressure head is connected to the lifting drive, which drives the elastic pressure head to move toward the conveyor track and presses the product on the conveyor belt onto the upper pressure plate.

[0008] Preferably, the lifting drive component is provided with a mounting plate and a guide block. The guide block is connected to the mounting plate, and the mounting plate is connected to the lifting drive component. The guide block is provided with a guide hole. The elastic pressure head includes a pressure block and an elastic element. The pressure block is slidably engaged with the guide hole, and the elastic element is disposed between the pressure block and the mounting plate for elastically supporting the pressure block.

[0009] Preferably, the pressure block has an installation groove, one end of the elastic element abuts in the installation groove, and the other end of the elastic element abuts on the mounting plate.

[0010] Preferably, the mounting plate is provided with positioning pins, and the transmission track is provided with positioning holes that cooperate with the positioning pins. The positioning pins pass through the positioning holes and are inserted into the material holes on the material belt, thereby positioning the product and the upper pressure plate.

[0011] Preferably, a dust suction hood is provided on the transmission track, which surrounds the upper pressure plate to remove the smoke and dust generated during laser engraving.

[0012] Preferably, a braking assembly is provided on the transmission track. The braking assembly includes a brake frame, a brake block, and a brake spring. The brake frame is set on the transmission track, one end of the brake block passes through the transmission track and contacts the material belt to provide resistance to the movement of the material belt, and both ends of the brake spring abut against the brake frame and the brake block respectively to provide pressure for the brake block to contact the material belt.

[0013] The beneficial effects of this utility model are: by using an elastic pressure head to flexibly press the product to be laser engraved onto the upper pressure plate, it can compensate for positional errors, thereby ensuring the consistency and stability of the product in the Z-direction position and reducing laser engraving color difference. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the positional relationship between the transmission track and the upper pressure plate of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the spring-loaded pressure head assembly of this utility model;

[0017] Figure 4 This is an exploded structural diagram of the spring-loaded pressure head assembly of this utility model.

[0018] The components in the attached diagram are labeled as follows:

[0019] 1. Laser engraving machine;

[0020] 2. Transmission track;

[0021] 3. Upper pressure plate; 31. Laser engraving holes;

[0022] 4. Elastic pressure head assembly; 41. Elastic pressure head; 411. Pressure block; 412. Elastic element; 42. Lifting drive element; 421. Mounting plate; 4211. Positioning pin; 422. Guide block; 4221. Guide hole;

[0023] 5. Vacuum cleaner cover;

[0024] 61. Brake bracket; 62. Brake block; 63. Brake spring; 64. Adjusting cam wrench. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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 utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0032] Example:

[0033] refer to Figures 1-4 A low-color-difference laser engraving device includes: a laser engraving machine 1 that emits a laser beam; a transmission track 2 for transporting a material strip; an upper pressure plate 3 bolted to the upper side of the transmission track 2 to limit the position of the material strip in the transmission track 2, prevent the material strip from leaving the transmission track 2, and ensure the consistency of product Z-axis repeatability positioning. The upper pressure plate 3 has laser engraving holes 31, which facilitate the laser beam to pass through the laser engraving holes 31 to laser engrave the surface of the product on the material strip on the transmission track 2; and a spring-loaded pressure head assembly 4, which includes an elastic pressure head 41 and a lifting drive component 42. The elastic pressure head 41 is connected to the lifting drive component 42, which can be a cylinder. Under the action of the lifting drive component 42, the elastic pressure head 41 is driven to move towards the transmission track 2 and press the product on the material strip onto the upper pressure plate 3, thereby ensuring the consistency of the product's Z-axis position when laser engraving is required and ensuring the laser engraving effect. The lifting drive 42 moves the elastic pressure head 41 toward the product on the conveyor belt and presses the product part on the conveyor belt onto the upper pressure plate 3, thereby ensuring the consistency of the product's Z-axis position. In conjunction with the self-adaptability of the elastic pressure head 41, the stability of the product's Z-axis position is improved, thereby reducing laser engraving color difference.

[0034] refer to Figure 3 and Figure 4 The lifting drive component 42 is bolted to a mounting plate 421 and a guide block 422. The guide block 422 is bolted to the mounting plate 421, and the mounting plate 421 is bolted to the lifting drive component 42. The guide block 422 has a guide hole 4221. The elastic pressure head 41 includes a pressure block 411 and an elastic element 412, which can be a spring. The pressure block 411 is slidably engaged with the guide hole 4221, and the guide hole 4221 also serves to support and limit the position of the pressure block 411. The elastic element 412 is disposed between the pressure block 411 and the mounting plate 421 to elastically support the pressure block 411. When the lifting drive component 42 is activated, its piston rod moves upward, i.e., towards the product, thereby driving the mounting plate 421, guide block 422, and pressure block 411 to move towards the product together. Subsequently, the pressure block 411 contacts the product on the conveyor belt and presses the product against the upper pressure plate 3. At this time, when the lifting drive component 42 drives the pressure head to move towards the product, due to the support and buffer of the elastic component 412, even if the piston rod of the lifting drive component 42 moves a small distance, it will not damage the product. On the contrary, it can reduce positional errors and ensure that the product is tightly pressed against the upper pressure plate 3, ensuring the stability and consistency of the product in the processing position, thereby ensuring the laser engraving effect.

[0035] refer to Figure 3 and Figure 4 In order to stabilize the position between the elastic element 412 and the pressure block 411, and thus provide more stable elastic support for the pressure block 411, an installation groove is provided in the pressure block 411. One end of the elastic element 412 abuts in the installation groove, and the other end of the elastic element 412 abuts on the mounting plate 421. Due to the weight of the pressure block 411 and under the limit of the guide hole 4221, the pressure block 411 can also stably press on the elastic element 412 and be above the mounting plate 421.

[0036] refer to Figure 3 and Figure 4 To ensure that the elastic pressure head 41 accurately presses the product into the position of the laser engraving hole 31 on the upper pressure plate 3, a positioning pin 4211 is interference-fitted on the mounting plate 421. A positioning hole that mates with the positioning pin 4211 is opened on the transmission track 2. The positioning pin 4211 passes through the positioning hole and is inserted into the material hole on the material belt, thereby positioning the product and the upper pressure plate 3, thus ensuring the accuracy of the position of the product and the laser engraving hole 31 on the upper pressure plate 3.

[0037] refer to Figure 1 and Figure 2 A dust suction hood 5 is bolted to the transmission track 2. The dust suction hood 5 is arranged around the upper pressure plate 3 to remove the smoke and dust generated during laser engraving, thereby further ensuring the laser engraving effect.

[0038] refer to Figure 1 and Figure 2A braking assembly is installed on the transmission track 2. The braking assembly includes a brake frame 61, a brake block 62, and a brake spring 63. The brake frame 61 is bolted to the transmission track 2. One end of the brake block 62 passes through the transmission track 2 and contacts the material belt, thereby providing resistance to the movement of the material belt. The two ends of the brake spring 63 abut against the brake frame 61 and the brake block 62 respectively, thereby providing pressure for the brake block 62 to contact the material belt. An adjusting cam wrench 64 can also be rotatably connected to the brake frame 61. The adjusting cam wrench 64 is connected to the brake block 62. When the brake block 62 does not need to contact the material belt, turning the adjusting cam wrench 64 will move the brake block 62 away from the material belt on the transmission track 2 and prevent it from contacting the material belt.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-color-difference laser engraving device, characterized in that, include: Laser engraving machine (1), which emits a laser beam; transmission track (2), which is used to transport material strips; The upper pressure plate (3) is set on the upper side of the transmission track (2) to limit the position of the material strip in the transmission track (2), prevent the material strip from leaving the transmission track (2), and ensure the consistency of product Z-axis repeat positioning. The upper pressure plate (3) is provided with laser engraving holes (31) so that the laser beam can pass through the laser engraving holes (31) to engrave the surface of the product on the material strip on the transmission track (2). The spring-loaded pressure head assembly (4) includes an elastic pressure head (41) and a lifting drive (42). The elastic pressure head (41) is connected to the lifting drive (42). The lifting drive (42) drives the elastic pressure head (41) to move toward the transmission track (2) and presses the product on the material belt onto the upper pressure plate (3).

2. The low color difference laser engraving device according to claim 1, characterized in that: The lifting drive component (42) is provided with a mounting plate (421) and a guide block (422). The guide block (422) is connected to the mounting plate (421), and the mounting plate (421) is connected to the lifting drive component (42). The guide block (422) is provided with a guide hole (4221). The elastic pressure head (41) includes a pressure block (411) and an elastic element (412). The pressure block (411) is slidably engaged with the guide hole (4221). The elastic element (412) is disposed between the pressure block (411) and the mounting plate (421) for elastically supporting the pressure block (411).

3. The low color difference laser engraving device according to claim 2, characterized in that: The pressure block (411) has an installation groove, one end of the elastic element (412) abuts against the installation groove, and the other end of the elastic element (412) abuts against the mounting plate (421).

4. The low color difference laser engraving device according to claim 2, characterized in that: The mounting plate (421) is provided with a positioning pin (4211), and the transmission track (2) is provided with a positioning hole that cooperates with the positioning pin (4211). The positioning pin (4211) passes through the positioning hole and is inserted into the material hole on the material belt, thereby positioning the product and the upper pressure plate (3).

5. The low color difference laser engraving device according to claim 1, characterized in that: A dust suction hood (5) is provided on the transmission track (2). The dust suction hood (5) is arranged around the upper pressure plate (3) and is used to suck away the smoke and dust generated during laser engraving.

6. The low color difference laser engraving device according to claim 1, characterized in that: A braking assembly is provided on the transmission track (2). The braking assembly includes a brake frame (61), a brake block (62), and a brake spring (63). The brake frame (61) is set on the transmission track (2). One end of the brake block (62) passes through the transmission track (2) and contacts the material belt, providing resistance to the movement of the material belt. The two ends of the brake spring (63) abut against the brake frame (61) and the brake block (62) respectively, providing pressure for the brake block (62) to contact the material belt.

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