Jig

Abstract

The application discloses a jig for positioning a structure to be processed on a laser marking product. The jig comprises a workbench for placing the laser marking product and a light shielding component movably arranged relative to the workbench. The light shielding component comprises a light shielding sheet for shielding a non-processing surface of the structure to be processed. The light shielding sheet is provided with a first through hole for exposing a processing surface of the structure to be processed. The non-processing surface of the structure to be processed is shielded by the light shielding sheet, and the processing surface of the structure to be processed is exposed through the first through hole of the light shielding sheet, so that the position of the processing surface can be accurately defined, the laser can accurately process the processing surface, the non-processing surface is prevented from being damaged by the laser, and the processing quality of the laser marking is improved.

Description

Technical Field

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

[0002] In related technologies, products that undergo laser marking are generally fixed and positioned using fixtures such as vacuum chucks and positioning columns. However, the positioning accuracy is insufficient, and both the machined and unmachined surfaces are exposed within the laser marking area, which can easily lead to problems such as incomplete marking, misalignment, and damage to the unmachined surfaces. Utility Model Content

[0003] This application provides a fixture for solving at least one of the above-mentioned technical problems.

[0004] The fixture described in this application is used to position the structure to be processed on a laser-marked product. The fixture includes: A workbench is used to place the laser-marked product; and, A light-shielding component is disposed on one side of the worktable and is movably disposed relative to the worktable. The light-shielding component includes a light-shielding sheet, which blocks the non-processed surface of the structure to be processed and has a first through hole, through which the surface to be processed of the structure to be processed is exposed.

[0005] The fixture in this embodiment of the application uses a light-shielding plate to block the non-machined surface of the structure to be processed, and exposes the machined surface of the structure to be processed through the first through hole of the light-shielding plate. This allows for accurate definition of the position of the machined surface, enabling the laser to precisely process the machined surface, avoiding laser damage to the non-machined surface, and improving the processing quality of laser marking.

[0006] In some embodiments, the light-shielding component further includes a mounting portion, the light-shielding sheet is fixedly connected to the mounting portion, and the mounting portion is provided with a second through hole corresponding to and communicating with the first through hole; The structure to be processed includes a cylindrical part, the top end face of the cylindrical part is the surface to be processed, the cylindrical part extends into the first through hole and the second through hole and the top end face is exposed through the first through hole, and the hole wall of the first through hole at least partially abuts against the peripheral surface of the cylindrical part.

[0007] Thus, by extending the cylindrical part into the first through hole and the second through hole, the top end face of the cylindrical part, that is, the surface to be processed, is exposed from the first through hole. The hole wall of the first through hole at least partially abuts against the peripheral surface of the cylindrical part. Therefore, the first through hole and the second through hole can play a certain limiting role on the cylindrical part, and the light shield can effectively block the peripheral side of the cylindrical part and the non-processed surface at the bottom of the cylindrical part.

[0008] In some embodiments, the mounting portion includes a base plate and a cover plate correspondingly connected to the base plate, the light-shielding sheet is sandwiched between the base plate and the cover plate, and the base plate is located on the side of the light-shielding sheet facing the bottom end of the cylindrical portion.

[0009] In this way, by sandwiching the light-shielding sheet between the base plate and the cover plate, the structural stability of the light-shielding component is ensured, and the assembly of the light-shielding component is relatively simple.

[0010] In some embodiments, at least one of the base plate and the cover plate is formed with a mounting groove that communicates with the second through hole, and the light-shielding sheet is accommodated in the mounting groove.

[0011] Thus, by housing the light-shielding sheet in the mounting groove, which is connected to the second through hole, the position of the light-shielding sheet between the base plate and the cover plate is further ensured, and the cylindrical part is facilitated to pass through the second through hole and extend into the first through hole.

[0012] In some embodiments, the second through hole penetrates the base plate to form a first hole segment, the second through hole penetrates the cover plate to form a second hole segment, at least a portion of the hole wall of the second hole segment is inclined, and the diameter of the second hole segment at the end away from the light-shielding sheet is larger than the diameter of the second hole segment at the end closer to the light-shielding sheet.

[0013] In this way, the cylindrical part can pass through the first hole and extend into the first through hole. The first hole can play a role in rough positioning, and the second hole can expose the top end face of the cylindrical part while avoiding blocking the laser used to process the top end face.

[0014] In some embodiments, the diameter of the second through hole is larger than the outer diameter of the cylindrical portion, and the first through hole is interference-fitted with the cylindrical portion.

[0015] In this way, the contact between the cylindrical part and the wall of the second through hole can be reduced, thus reducing the risk of scratches. Furthermore, the wall of the first through hole can fully contact the peripheral surface of the cylindrical part, which is beneficial for accurately limiting the position of the cylindrical part and thus ensuring that laser marking can accurately process the top end face of the cylindrical part.

[0016] In some embodiments, the wall of the first through hole is formed with a plurality of flexible teeth, the plurality of flexible teeth being arranged circumferentially along the first through hole, and each of the flexible teeth abutting against the peripheral surface of the cylindrical portion.

[0017] In this way, by using flexible teeth to abut against the peripheral surface of the cylindrical part, the flexible teeth have a certain radial deformation margin, thereby avoiding scratching the surface of the cylindrical part. Furthermore, the flexible teeth can fully contact the peripheral surface of the cylindrical part, which is beneficial to improving the accurate positioning of the cylindrical part.

[0018] In some embodiments, the fixture further includes a limiting structure, wherein the mounting portion is formed with a limiting hole for use with the limiting structure, and the limiting structure is accommodated in the limiting hole when the top end face of the cylindrical portion protrudes from the first through hole.

[0019] Thus, with the top end face of the cylindrical part exposed through the first through hole, the limiting structure is accommodated in the limiting hole, thereby further restricting the relative position of the light-shielding component and the structure to be processed.

[0020] In some embodiments, the fixture further includes a drive component connected to the light-shielding component, which drives the light-shielding component to move relative to the worktable so that the light-shielding component blocks or moves away from the non-machined surface of the structure to be processed.

[0021] In this way, by driving the light-shielding component to move relative to the worktable, before each laser processing begins, the light-shielding component can move to the position where the surface to be processed is exposed through the first through hole, so that the light-shielding plate can block the non-processed surfaces around the surface to be processed, thereby improving the automation level in the use of the fixture.

[0022] In some implementations, the worktable is equipped with suction cups for adsorbing and fixing the laser marking products.

[0023] In this way, by using a suction cup to hold the laser marking product, the laser marking product can be fixedly placed on the worktable, which makes it easy for the first through hole of the light shield to be accurately aligned with the structure to be processed, and can ensure the stability of the position of the surface to be processed during the laser marking process.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of the fixture according to the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the fixture on which the laser marking product is placed according to an embodiment of this application; Figure 3 This is an exploded structural diagram of the light-shielding component according to an embodiment of this application; Figure 4 yes Figure 2 An enlarged schematic diagram of the fixture in the light-shielding component section; Figure 5 yes Figure 4One of the schematic diagrams of the fixture after the light-shielding component moves relative to the worktable; Figure 6 yes Figure 4 The second schematic diagram shows the structure of the fixture after the light-shielding component moves relative to the worktable.

[0026] Explanation of reference numerals in the attached figures: 100-Jig, 10-Workbench, 11-Tabletop, 12-Positioning pin, 13-Suction cup, 20-Light shielding component, 21-Light shielding plate, 211-First through hole, 212-Flexible tooth, 22-Mounting part, 221-Second through hole, 222-Base plate, 2221-First hole section, 2222-Mounting groove, 223-Cover plate, 2231-Second hole section, 224-Connecting block, 225-Limiting hole, 30-Limiting structure, 31-Limiting pin; 40-Drive component, 41-Drive part, 42-Transmission part; 200 - Laser marking product, 201 - Columnar part, 202 - Top end face, 203 - Peripheral surface. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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 this application. 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, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] Please see Figure 1 and Figure 2 The fixture 100 of this application embodiment is used to position the structure to be processed on the laser marking product 200. The fixture 100 includes a worktable 10 and a light-shielding component 20. The worktable 10 is used to place the laser marking product 200. The light-shielding component 20 is movably disposed relative to the worktable 10. The light-shielding component 20 includes a light-shielding plate 21, which is used to block the non-processed surface of the structure to be processed. The light-shielding plate 21 is provided with a first through hole 211, which is used to expose the surface to be processed of the structure to be processed.

[0033] The fixture 100 of this application embodiment blocks the non-processed surface of the structure to be processed by the light shield 21, and exposes the surface to be processed by the first through hole 211 of the light shield 21. This can accurately define the position of the surface to be processed, so that the laser can accurately scan the surface to be processed, avoid laser damage to the non-processed surface, and improve the processing quality of laser marking.

[0034] Specifically, the worktable 10 includes a table surface 11, which can be a flat surface and approximately parallel to the bottom surface. The laser marking product 200 is placed on the table surface 11. The size and shape of the table surface 11 match the outer contour size and shape of the laser marking product 200. For example, if the laser marking product 200 is a rectangular frame structure, the table surface 11 is also a square plane.

[0035] Furthermore, a positioning structure may be provided on the table 11, such as a positioning post 12. The positioning post 12 may be located at the edge of the table 11, and multiple positioning posts 12 may respectively abut against multiple sides of the laser marking product 200 to limit the position of the laser marking product 200.

[0036] After the laser marking product 200 is placed on the table 11, the light-shielding component 20 moves relative to the worktable 10 until the first through hole 211 coincides with the structure to be processed, allowing the surface to be processed on the structure to be processed to be exposed through the first through hole 211. At the same time, the non-processed surfaces of the structure to be processed, as well as the non-processed surfaces on the laser marking product 200 connected to the structure to be processed, can be blocked by the light-shielding plate 21. Since the surface to be processed is positioned through the first through hole 211, processing defects such as laser misalignment or incomplete processing are reduced, and the non-processed surfaces are blocked by the light-shielding plate 21, reducing the risk of damage to the non-processed surfaces caused by laser processing.

[0037] The light source used for laser marking can project a laser beam from the table 11 onto the product 200 to be marked. Combined with... Figure 6 When the surface to be processed is exposed through the first through hole 211, a visual recognition device can be set up to detect the surface to be processed, and then the light source can be controlled to project laser onto the location of the surface to be processed based on the visual recognition result.

[0038] The light-shielding plate 21 can be square, circular, triangular, polygonal, or other shapes. For example, the light-shielding plate 21 is a rectangular thin plate. The first through hole 211 extends through the light-shielding plate 21 in a square shape along its thickness. The first through hole 211 can be located at the center of the light-shielding plate 21. The first through hole 211 can be circular, elliptical, square, triangular, polygonal, racetrack-shaped, or other shapes, and the shape of the first through hole 211 is consistent with the shape of the surface to be processed, thereby ensuring that the first through hole 211 can be fully exposed to the surface to be processed, while the non-processed surface connected to the surface to be processed can be blocked.

[0039] Please see Figure 1 In some embodiments, the worktable 10 is provided with a suction cup 13, which is used to adsorb and fix the laser marking product 200.

[0040] Thus, by adsorbing the laser marking product 200 by the suction cup 13, the laser marking product 200 can be fixedly placed on the worktable 10, which facilitates the accurate alignment of the first through hole 211 of the light shield 21 with the structure to be processed, and ensures that the position of the surface to be processed is stable during the laser marking process.

[0041] Specifically, suction cups 13 are disposed on the worktable 11 and may protrude relative to the worktable 11. Multiple suction cups 13 may be present, spaced apart on the worktable 11. When the laser-marked product 200 is placed on the worktable 10, the suction cups 13 can contact a portion of the surface of the laser-marked product 200. The suction cups 13 can adhere the laser-marked product 200 by vacuuming, thus fixing the laser-marked product 200 relative to the worktable 10.

[0042] Please see Figure 2 and Figure 3 In some embodiments, the light-shielding component 20 includes a mounting portion 22, and the light-shielding sheet 21 is fixedly connected to the mounting portion 22. The mounting portion 22 forms a second through hole 221 that is opposite to and communicates with the first through hole 211. The structure to be processed includes a cylindrical portion 201, the top end face 202 of the cylindrical portion 201 is the surface to be processed, the cylindrical portion 201 extends at least partially into the second through hole 221, the top end face 202 is exposed through the first through hole 211, and the hole wall of the first through hole 211 at least partially abuts against the peripheral surface 203 of the cylindrical portion 201.

[0043] Thus, as the cylindrical portion 201 extends into the second through hole 221, the top end face 202 of the cylindrical portion 201, i.e. the surface to be processed, is exposed from the first through hole 211. The wall of the first through hole 211 at least partially abuts against the peripheral surface 203 of the cylindrical portion 201. Therefore, the first through hole 211 and the second through hole 221 can play a certain limiting role on the cylindrical portion 201, and the light shield 21 can effectively block the peripheral surface 203 of the cylindrical portion 201 and the unprocessed surface at the bottom of the cylindrical portion 201.

[0044] Specifically, in this embodiment, the cylindrical portion 201 can be a hollow stud, and the top end face 202 of the cylindrical portion 201 can be an annular plane at the top of the stud. The light-shielding plate 21 and the mounting portion 22 can be sleeved on the cylindrical portion 201, so that while the top end face 202 is exposed, the light-shielding plate 21 can block the peripheral surface 203 of the cylindrical portion 201, as well as the part of the surface connected to the bottom end of the cylindrical portion 201. Please see Figures 2-4In some embodiments, the mounting portion 22 includes a base plate 222 and a cover plate 223, with a light-shielding sheet 21 sandwiched between the base plate 222 and the cover plate 223. The base plate 222 is located on the side of the light-shielding sheet 21 facing the bottom end of the columnar portion 201.

[0045] Thus, by sandwiching the light-shielding sheet 21 between the base plate 222 and the cover plate 223, the structure of the light-shielding component 20 is ensured to be stable, and the assembly of the light-shielding component 20 is relatively simple.

[0046] Specifically, the cover plate 223, the light-shielding sheet 21, and the base plate 222 can be stacked sequentially from top to bottom. The size and area of ​​the base plate 222 and the cover plate 223 can both be larger than the light-shielding sheet 21, that is, the outer contour edges of the base plate 222 and the cover plate 223 both extend beyond the edge of the light-shielding sheet 21.

[0047] Please see Figures 2-4 In some embodiments, at least one of the base plate 222 and the cover plate 223 is formed with a mounting groove 2222, which communicates with the second through hole 221, and the light shield 21 is accommodated in the mounting groove 2222.

[0048] Thus, by having the light-shielding sheet 21 accommodated in the mounting groove 2222, which is connected to the second through hole 221, the position of the light-shielding sheet 21 between the base plate 222 and the cover plate 223 is further ensured, and the columnar part 201 is facilitated to pass through the second through hole 221 and extend into the first through hole 211.

[0049] Specifically, the base plate 222 and the cover plate 223 are stacked, and a mounting groove 2222 is formed on the side of the base plate 222 facing the cover plate 223. The mounting groove 2222 is a recessed groove, and its shape and depth can correspond to the outer contour shape and thickness of the light-shielding sheet 21. For example, the light-shielding sheet 21 is a square flat plate structure, and the mounting groove 2222 is a square shallow groove. The light-shielding sheet 21 is accommodated in the mounting groove 2222, and the two side surfaces of the light-shielding sheet 21 in the thickness direction can respectively fit against the cover plate 223 and the bottom surface of the mounting groove 2222.

[0050] The mounting groove 2222 is connected to the first hole segment 2221 of the second through hole 221, and the mounting groove 2222 and the first hole segment 2221 together penetrate the base plate 222 along the thickness direction.

[0051] Optionally, the base plate 222 and the cover plate 223 are fixedly connected by fasteners (not shown). The fasteners can be screws, which pass through the base plate 222 and the cover plate 223, avoiding the mounting groove 2222.

[0052] Please see Figures 2-4In some embodiments, the second through hole 221 penetrates the bottom plate 222 to form a first hole segment 2221, and the second through hole 221 penetrates the cover plate 223 to form a second hole segment 2231. At least a portion of the hole wall of the second hole segment 2231 is inclined, and the diameter of the second hole segment 2231 at the end away from the light shield 21 is larger than the diameter of the second hole segment 2231 at the end close to the light shield 21.

[0053] Thus, the cylindrical part 201 can pass through the first hole segment 2221 and extend into the first through hole 211. The first hole segment 2221 can play a coarse positioning role, and the second hole segment 2231 can expose the top end face 202 of the cylindrical part 201 while avoiding blocking the laser used to process the top end face 202.

[0054] Specifically, the first hole segment 2221 and the second hole segment 2231 can be connected through the first through hole 211. The second hole segment 2231 can be a conical hole, and the hole wall of the second hole segment 2231 is inclined relative to the axial direction of the second through hole 221.

[0055] After the fixture 100 completes the positioning of the cylindrical part 201, during the laser marking process, the cylindrical part 201 passes through the first hole section 2221 and the first through hole 211. The top end face 202 of the cylindrical part 201 can be located in the first through hole 211, or in the second hole section 2231, or flush with the side surface of the light shield 21 facing the cover plate 223.

[0056] Please see Figure 3 and Figure 4 In some embodiments, the diameter of the second through hole 221 is larger than the outer diameter of the cylindrical portion 201, and the first through hole 211 is interference-fitted with the cylindrical portion 201.

[0057] In this way, the contact between the cylindrical part 201 and the hole wall of the second through hole 221 can be reduced, the risk of scratching can be reduced, and the hole wall of the first through hole 211 can fully contact the peripheral surface 203 of the cylindrical part 201, which is conducive to accurately limiting the position of the cylindrical part 201, thereby ensuring that laser marking can accurately process the top end face 202 of the cylindrical part 201.

[0058] Specifically, the diameter of the second through hole 221 at any position is larger than the outer diameter of the cylindrical portion 201 and also larger than the diameter of the first through hole 211. The diameter of the first hole segment 2221 can be uniform, and the diameter of the first hole segment 2221 is larger than the diameter of the first through hole 211 and also larger than the outer diameter of the cylindrical portion 201. The minimum diameter of the second hole segment 2231, that is, the diameter of the opening formed by the first hole segment 2221 on the side surface of the cover plate 223 that abuts against the light-shielding sheet 21, is larger than the outer diameter of the cylindrical portion 201.

[0059] The interference fit between the first through hole 211 and the cylindrical part 201 means that the inner diameter of the first through hole 211 is interference-fitted with the outer diameter of the cylindrical part 201.

[0060] Please see Figure 3 and Figure 6 In some embodiments, the wall of the first through hole 211 is formed with a plurality of flexible teeth 212, which are arranged circumferentially along the first through hole 211. The flexible teeth 212 are used to abut against the peripheral surface 203 of the cylindrical part 201.

[0061] Thus, by the flexible teeth 212 abutting against the peripheral surface 203 of the cylindrical part 201, the flexible teeth 212 have a certain radial deformation margin, thereby avoiding scratching the surface of the cylindrical part 201. Furthermore, the flexible teeth 212 and the peripheral surface 203 of the cylindrical part 201 can make full contact, which is beneficial to improving the accurate positioning of the cylindrical part 201.

[0062] Specifically, multiple flexible teeth 212 can surround the entire circumference, and a groove is formed between every two circumferentially adjacent flexible teeth 212 along the first through hole 211. Each flexible tooth 212 includes a root and an end. The root of the multiple flexible teeth 212 can be integrally connected to the main body of the light-shielding sheet 21, and the end of the flexible teeth 212 abuts against the peripheral surface 203 of the cylindrical portion 201. The flexible teeth 212 can be made of a relatively soft material with good light absorption properties, and the light-shielding sheet 21 can be integrally formed with the flexible teeth 212 and made of the same material. For example, the light-shielding sheet 21 and the flexible teeth 212 can be formed by stamping white rubber.

[0063] It should be noted that the diameter of the first through hole 211 refers to the diameter of the circumference around the end of the flexible tooth 212, not the diameter of the circumference around the root of the flexible tooth 212.

[0064] In some embodiments, since the first through hole 211 is interference-fitted with the cylindrical portion 201, when the end of the flexible tooth 212 abuts against the peripheral surface 203 of the cylindrical portion 201, the flexible tooth 212 will deform under pressure. Therefore, the cylindrical portion 201 can pass through the first through hole 211, and the end face of the flexible tooth 212 can be in close contact with the peripheral surface 203 of the cylindrical portion 201. The groove between adjacent flexible teeth 212 can provide a certain circumferential movement allowance for the flexible tooth 212 to deform under pressure.

[0065] Please see Figure 2 and Figure 3 In some embodiments, the fixture 100 includes a drive component 40, which is connected to the light-shielding component 20. The drive component 40 is used to drive the light-shielding component 20 to move relative to the worktable 10 along a preset trajectory.

[0066] Thus, by driving the light-shielding component 20 to move relative to the worktable 10 along a preset trajectory through the driving component 40, the light-shielding component 20 can move to the position where the surface to be processed is exposed through the first through hole 211 before each laser processing begins. At the same time, the light-shielding plate 21 can block the non-processed surfaces around the surface to be processed, thereby improving the automation level of the fixture 100 during use.

[0067] Specifically, the driving component 40 includes a driving part 41 and a transmission part 42. The transmission part 42 is connected to the light-shielding component 20, and the driving part 41 drives the light-shielding component 20 to move through the transmission part 42. The transmission part 42 can be a shaft or a rod. The axial direction of the transmission part 42 intersects the plane where the table surface 11 is located. The driving part 41 is connected to the transmission part 42 and can drive the transmission part 42 to rotate, and can also drive the transmission part 42 to move or extend along the axial direction of the transmission part 42. The transmission part 42 can be inserted into the mounting part 22, and the transmission part 42 is fixedly connected to the mounting part 22. The driving part 41 drives the transmission part 42 to rotate, causing the mounting part 22 and the light-shielding plate 21 to rotate around the central axis of the transmission part 42; the transmission part 42 moves or extends along its own axial direction, causing the mounting part 22 to move relative to the worktable 10 along the axial direction of the transmission part 42. The axial direction of the transmission part 42 can be parallel to the axial direction of the cylindrical part 201.

[0068] Furthermore, the transmission part 42 protrudes axially from the table surface 11. During the extension and retraction of the transmission part 42, the top end of the transmission part 42 can always be higher than the plane where the bottom of the suction cup 13 is located. The mounting part 22 can be connected to one end of the transmission part 42 in the axial direction, so that the mounting part 22 can always move above the table surface 11, thereby avoiding structural interference and damage or scratches to the laser marking product 200.

[0069] Please see Figures 3-6 The working process of the fixture 100 can be as follows: the light-shielding component 20 is first set on one side of the worktable 10 so that the laser marking product 200 can be placed on the worktable 10; then, the suction cup 13 adsorbs and fixes the laser marking product 200, and the driving part 41 drives the mounting part 22 and the light-shielding plate 21 to rotate around the central axis of the driving part 42 through the transmission part 42 until the light-shielding plate 21 rotates to the position where the first through hole 211 and the cylindrical part 201 are axially opposite; when the first through hole 211 and the cylindrical part 201 are axially opposite, the transmission part 42 can simultaneously shorten or move downward along the axis, driving the mounting part 22 and the light-shielding plate 21 to press down, so that the cylindrical part 201 passes through the first hole section 2221 on the base plate 222 and extends into the first through hole 211.

[0070] Thus, the first through hole 211 can accurately position the column 12-shaped part, and the top end face 202 of the column 201 is fully exposed through the first through hole 211 so as to accept laser processing. At the same time, the light shield 21 can block the peripheral surface 203 and the non-processed surface at the bottom of the column 201.

[0071] It should be noted that the axial direction here refers to both the axial direction of the transmission part 42 and the axial direction of the cylindrical part 201. In some embodiments, the axial direction here may be perpendicular to the table surface 11.

[0072] Optionally, the drive unit 41 includes a cylinder, and further, the drive component 40 is a rotary pressing cylinder.

[0073] Please see Figures 3-6 In some embodiments, the fixture 100 includes a limiting structure 30, and the mounting portion 22 forms a limiting hole 225. When the top end face 202 of the cylindrical portion 201 is exposed through the first through hole 211, the limiting structure 30 is at least partially accommodated in the limiting hole 225.

[0074] Thus, with the top end face 202 of the columnar portion 201 exposed through the first through hole 211, the limiting structure 30 is at least partially accommodated in the limiting hole 225, thereby further limiting the relative position of the light-shielding member 20 and the structure to be processed.

[0075] Specifically, the mounting part 22 includes a connecting block 224 connected to the base plate 222, and a limiting hole 225 is provided on the connecting block 224. The limiting structure 30 can be a limiting pin 31.

[0076] Optionally, the connecting block 224 is fixedly connected to the end of the transmission part 42, and two limiting holes 225 may be provided on both sides of the connection position between the connecting block 224 and the transmission part 42. Two limiting pins 31 are provided on both sides of the transmission part 42 along the radial direction, and the limiting pins 31 can be erected along the axial direction of the transmission part 42. When the connecting block 224 rotates around the central axis of the transmission part 42, while the first through hole 211 is aligned with the cylindrical part 201, the two limiting holes 225 are also aligned with one limiting pin 31; while the base plate 222 and the light shield 21 are pressed down axially, the connecting block 224 also gradually approaches the limiting pin 31, so that the limiting pin 31 can be inserted into the corresponding limiting hole 225.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A fixture for positioning the structure to be processed on a laser-marked product, characterized in that, The fixtures include: A workbench is used to place the laser-marked product; and, A light-shielding component is disposed on one side of the worktable and is movably disposed relative to the worktable. The light-shielding component includes a light-shielding sheet, which blocks the non-processed surface of the structure to be processed and has a first through hole, through which the surface to be processed of the structure to be processed is exposed.

2. The fixture according to claim 1, characterized in that, The light-shielding component also includes a mounting part, the light-shielding sheet is fixedly connected to the mounting part, and the mounting part is provided with a second through hole that corresponds to and communicates with the first through hole; The structure to be processed includes a cylindrical part, the top end face of the cylindrical part is the surface to be processed, the cylindrical part extends into the first through hole and the second through hole and the top end face is exposed through the first through hole, and the hole wall of the first through hole at least partially abuts against the peripheral surface of the cylindrical part.

3. The fixture according to claim 2, characterized in that, The mounting portion includes a base plate and a cover plate correspondingly connected to the base plate. The light-shielding sheet is sandwiched between the base plate and the cover plate, and the base plate is located on the side of the light-shielding sheet facing the bottom end of the columnar portion.

4. The fixture according to claim 3, characterized in that, At least one of the base plate and the cover plate has a mounting groove, the mounting groove is connected to the second through hole, and the light-shielding sheet is accommodated in the mounting groove.

5. The fixture according to claim 3, characterized in that, The second through hole penetrates the bottom plate to form a first hole segment, and the second through hole penetrates the cover plate to form a second hole segment. At least part of the hole wall of the second hole segment is inclined, and the hole diameter at the end of the second hole segment away from the light-shielding sheet is larger than the hole diameter at the end of the second hole segment close to the light-shielding sheet.

6. The fixture according to claim 2, characterized in that, The diameter of the second through hole is larger than the outer diameter of the cylindrical part, and the first through hole is interference-fitted with the cylindrical part.

7. The fixture according to claim 2, characterized in that, The wall of the first through hole is formed with a plurality of flexible teeth, which are arranged circumferentially along the first through hole, and each flexible tooth abuts against the peripheral surface of the cylindrical part.

8. The fixture according to claim 2, characterized in that, The fixture also includes a limiting structure, and the mounting portion is formed with a limiting hole for use with the limiting structure. When the top end face of the cylindrical portion protrudes from the first through hole, the limiting structure is accommodated in the limiting hole.

9. The fixture according to claim 1, characterized in that, The fixture also includes a driving component connected to the light-shielding component. The driving component drives the light-shielding component to move relative to the worktable so that the light-shielding component blocks or moves away from the non-machined surface of the structure to be processed.

10. The fixture according to claim 1, characterized in that, The worktable is equipped with a suction cup, which is used to adhere and fix the laser marking product.

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