Laser engraving positioning jig

Abstract

The utility model relates to a laser etching positioning jig for positioning a sound box. The laser etching positioning jig comprises a base and a positioning mechanism. The positioning mechanism comprises a positioning plate, support columns, locking members and positioning inserts. The positioning plate is connected to the support columns. The ends of the support columns away from the positioning plate are detachably connected to the base. The sound box is fixed to the positioning plate by the locking members. The positioning plate is provided with a first through hole and a mounting step along its thickness direction. The first through hole is opposite to the foot pad of the sound box. The mounting step is located on the side of the positioning plate facing the base. The mounting step is annularly arranged at the edge of the first through hole. The positioning insert is annular. The positioning insert is detachably fixed to the mounting step. The positioning insert is provided with a plurality of avoiding holes. The avoiding holes correspond to the protrusions on the foot pad one by one. The utility model can effectively reduce the cumulative tolerance that is difficult to control in the assembly of multiple parts, solve the problems of inaccurate laser etching position and offset of the mark, meet the requirements of the laser etching process with high positioning accuracy, and improve the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of speaker manufacturing equipment technology, specifically to a laser engraving positioning fixture. Background Technology

[0002] Currently, most audio products, after assembly, have speaker surfaces (such as...) Figure 1 As shown, laser engraving is required to create lettering and graphic markings. To ensure the positional accuracy of these markings, this process necessitates the use of specialized fixtures. Traditional fixtures rely on the speaker's shape for positioning. However, the speaker's external structure is assembled from multiple parts such as grilles, cabinets, feet, and hooks, leading to significant cumulative tolerances. These tolerances ultimately cause problems such as inaccurate laser engraving positions and marking misalignment, affecting the product's appearance. Utility Model Content

[0003] The purpose of this utility model is to provide a laser engraving positioning fixture, which can effectively reduce the cumulative tolerance that is difficult to control in the assembly of multiple parts when positioning a speaker, solve problems such as inaccurate laser engraving position and mark offset, meet the laser engraving process with extremely high positioning accuracy requirements, and improve production efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A laser-engraved positioning fixture is provided for positioning a speaker. The laser-engraved positioning fixture includes a base and a positioning mechanism. The positioning mechanism includes a positioning plate, support columns, locking components, and positioning inserts. The positioning plate is connected to multiple support columns, and the end of each support column away from the positioning plate is detachably connected to the base. The speaker is fixed to the positioning plate by the locking components. The positioning plate has a first through hole and a mounting step along its thickness direction. The first through hole is directly opposite the speaker's foot pad. The mounting step is located on the side of the positioning plate facing the base and is arranged around the edge of the first through hole. The positioning insert is annular and detachably fixed to the mounting step. The positioning insert has several clearance holes, each corresponding to a protrusion on the foot pad.

[0006] As a further embodiment of the laser engraving positioning fixture, the step surface of the mounting step is provided with a second through hole corresponding to the avoidance hole, and the second through hole is larger than the avoidance hole.

[0007] As a further embodiment of the laser-engraved positioning fixture, the locking component includes two sets of locking structures, which are spaced apart along the length of the positioning plate. Each set of locking structures includes a pressure rod, a first mounting seat, a second mounting seat, and an elastic buckle. The first mounting seat and the second mounting seat are spaced apart along the width of the positioning plate. One end of the pressure rod is hinged to the first mounting seat via a hinge shaft, the axis of which extends along the length of the positioning plate. The elastic buckle is mounted on the second mounting seat. The pressure rod can rotate around the hinge shaft, and the other end of the pressure rod can engage with the elastic buckle to fix the speaker on the positioning plate.

[0008] As a further embodiment of the laser-engraved positioning fixture, the locking element further includes a buffer pad, which is fixed to the side of the pressure rod facing the positioning plate and abuts against the speaker; and / or,

[0009] The side of the pressure rod facing the positioning plate is aligned with the contour of the upper surface of the speaker; and / or,

[0010] The locking structure further includes an elastic post, which is disposed on the second mounting base. The elastic post is located on the side of the elastic buckle facing the first mounting base, and the elastic buckle can press against the elastic post and engage with the pressure rod.

[0011] As a further embodiment of the laser engraving positioning fixture, the positioning mechanism further includes multiple baffles, all of which are arranged on the positioning plate around the outer periphery of the speaker.

[0012] As a further embodiment of the laser engraving positioning fixture, the first mounting base is provided with a baffle on the side facing the second mounting base, the second mounting base is provided with a baffle on the side facing the first mounting base, and the positioning plate is provided with a baffle at each end adjacent to its length direction.

[0013] As a further embodiment of the laser engraving positioning fixture, the elastic buckle includes a base plate, a buckle, and a limiting block. The base plate is fixed to the second mounting base, and the base plate has an installation step. The buckle is fixed in the installation step by bolts. The buckle includes a buckle body, a locking block, and a pressing plate. The buckle body is fixed in the installation step by bolts. The locking block protrudes from the buckle body on the side facing the first mounting base to form a locking slot. The pressing plate is fixed to the end of the buckle body away from the base plate, and the pressing plate is located on the side of the buckle body away from the first mounting base. The limiting block is fixed to the base plate and spaced apart from the buckle body. The pressing plate is spaced above the limiting block. The end of the pressure rod away from the first mounting base can engage with the locking slot. By pressing the pressing plate, the pressure rod can be separated from the buckle.

[0014] As a further embodiment of the laser engraving positioning fixture, it also includes two positioning posts, which are spaced apart along the length of the base. The upper end of each positioning post is provided with a positioning groove. The positioning plate has two positioning blocks protruding along one side of its width direction, which correspond one-to-one with the positioning groove. The positioning blocks are inserted into the positioning groove.

[0015] As a further embodiment of the laser engraving positioning fixture, the bottom of the positioning groove is provided with a positioning pin, and the positioning block is provided with a pin hole corresponding to the positioning pin, and the positioning pin is inserted into the pin hole.

[0016] As a further embodiment of the laser engraving positioning fixture, it also includes two positioning seats, each corresponding to a positioning post. The positioning seats are fixed on the base and located on one side of the positioning post along the width direction of the base. Each positioning seat has a positioning notch facing the positioning post. The two support posts located on one side of the positioning plate in the width direction can be inserted into the corresponding positioning notches.

[0017] The beneficial effects of this utility model are:

[0018] This utility model involves creating a first through hole on a positioning plate and installing a positioning insert at the mounting step on the edge of the first through hole. The positioning insert fits snugly against the speaker's feet, exposing the target laser-engraved area of ​​the feet through the first through hole. The clearance holes on the positioning insert avoid protrusions on the feet, improving the fit between the feet and the positioning insert. Simultaneously, the corresponding engagement of the clearance holes and protrusions also facilitates faster positioning of the speaker on the positioning plate. This embodiment of the laser-engraved positioning fixture only requires the speaker's feet, eliminating the source of error and effectively avoiding the cumulative tolerance problem that is difficult to control in the assembly of multiple parts. It can solve the problem of inaccurate laser engraving positions. This invention addresses issues such as mark misalignment and meets the requirements of laser engraving processes with extremely high positioning accuracy. The positioning mechanism and base of this invention adopt a split-type structure design, meaning the positioning mechanism and base are detachably connected. After the speaker is positioned and fixed on the positioning plate by locking components, it is then installed on the base. Therefore, efficient turnover can be achieved by configuring multiple interchangeable positioning mechanisms. Multiple sets of positioning mechanisms can be prepared in advance, allowing operators to clamp the next speaker on a spare positioning mechanism while the laser engraving equipment is processing, realizing simultaneous operation of clamping and laser engraving, thereby minimizing equipment downtime and improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the speaker being mounted in a laser-engraved positioning fixture in one embodiment;

[0020] Figure 2 This is an exploded view of the positioning insert and positioning plate in one embodiment;

[0021] Figure 3 This is a schematic diagram of the speaker structure in one embodiment;

[0022] Figure 4 This is a schematic diagram of the positioning insert in another embodiment;

[0023] Figure 5 This is a schematic diagram of the positioning insert in yet another embodiment;

[0024] Figure 6 This is a schematic diagram of the structure of the laser-engraved positioning fixture in one embodiment;

[0025] Figure 7 This is an exploded view of the base plate and positioning mechanism in one embodiment;

[0026] Figure 8 This is a schematic diagram of the positioning mechanism (the pressure rod is engaged with the elastic buckle) in one embodiment;

[0027] Figure 9 This is a schematic diagram of the positioning mechanism (the pressure rod and the elastic buckle are separated) in one embodiment;

[0028] Figure 10 This is a schematic diagram of the elastic buckle in one embodiment.

[0029] In the picture:

[0030] 1. Speaker enclosure; 11. Foot pads; 12. Protrusions;

[0031] 100. Base; 1001. Waist-shaped hole; 200. Positioning mechanism; 210. Positioning plate; 2101. First through hole; 2102. Mounting step; 2103. Second through hole; 211. Positioning block; 2111. Pin hole; 220. Support column; 230. Locking element; 231. Pressure rod; 232. First mounting seat; 233. Second mounting seat; 234. Elastic buckle; 2341. Base plate; 2 3411, Mounting slot; 2342, Buckle; 23421, Buckle body; 23422, Buckle block; 23423, Pressing plate; 2343, Limiting block; 235, Buffer pad; 236, Elastic post; 240, Positioning insert; 2401, Clearance hole; 250, Baffle; 300, Positioning post; 3001, Positioning groove; 400, Positioning pin; 500, Positioning seat; 5001, Positioning notch. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly 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 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 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.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figures 1 to 3 As shown, the laser-engraved positioning fixture in this embodiment is used to position the speaker 1. The laser-engraved positioning fixture includes a base 100 and a positioning mechanism 200. The positioning mechanism 200 includes a positioning plate 210, support columns 220, locking elements 230, and positioning inserts 240. The positioning plate 210 is connected to multiple support columns 220, and the end of the support column 220 away from the positioning plate 210 is detachably connected to the base 100. The speaker 1 is fixed on the positioning plate 210 by the locking elements 230. The positioning plate 210 is opened along its thickness direction. The device has a first through hole 2101 and a mounting step 2102. The first through hole 2101 is directly opposite the foot pad 11 of the speaker 1. The mounting step 2102 is located on the side of the positioning plate 210 facing the base 100. The mounting step 2102 is arranged around the edge of the first through hole 2101. The positioning insert 240 is annular and can be detachably fixed on the mounting step 2102. The positioning insert 240 has several clearance holes 2401, and the clearance holes 2401 correspond one-to-one with the protrusions 12 on the foot pad 11.

[0037] In this embodiment, a first through hole 2101 is opened on the positioning plate 210, and a positioning insert 240 is installed at the mounting step 2102 on the edge of the first through hole 2101. The positioning insert 240 fits against the foot pad 11 of the speaker 1, so that the target laser-engraved area of ​​the foot pad 11 is exposed in the first through hole 2101. The clearance hole 2401 on the positioning insert 240 can avoid the protrusion 12 on the foot pad 11, improving the fit between the foot pad 11 and the positioning insert 240. At the same time, the corresponding cooperation between the clearance hole 2401 and the protrusion 12 can also improve the rapid positioning of the speaker 1 on the positioning plate 210. The laser-engraved positioning fixture in this embodiment only requires the foot pad 11 of the speaker 1, so the source of error is singular, effectively avoiding the cumulative tolerance problem that is difficult to control in the assembly of multiple parts. This solution addresses issues such as inaccurate laser engraving positioning and mark misalignment, meeting the requirements of laser engraving processes with extremely high positioning accuracy. In this embodiment, the positioning mechanism 200 and the base 100 adopt a split structure design, meaning the positioning mechanism 200 and the base 100 are detachably connected. After the speaker 1 is positioned and fixed on the positioning plate 210 by the locking member 230, it is then installed on the base 100. Therefore, efficient turnover can be achieved by configuring multiple interchangeable positioning mechanisms 200. Multiple sets of positioning mechanisms 200 can be prepared in advance, allowing operators to clamp the next speaker 1 on a spare positioning mechanism 200 while the laser engraving equipment is processing, achieving simultaneous clamping and laser engraving operations. This minimizes equipment downtime and improves production efficiency.

[0038] Furthermore, the step surface of the mounting step 2102 is provided with a second through hole 2103 corresponding to the clearance hole 2401, and the second through hole 2103 is larger than the clearance hole 2401.

[0039] For different speaker 1 foot pads 11, the position of the protrusions 12 on the foot pad 11 does not change much, but the shape of the protrusions 12 will be different. In this embodiment, a second through hole 2103 corresponding to the avoidance hole 2401 is opened on the step surface of the mounting step 2102. For protrusions 12 with different shapes and heights, such as Figure 4 and Figure 5 As shown, positioning inserts 240 with different types of clearance holes 2401 can be designed. Since the second through hole 2103 is larger than the clearance hole 2401, when the protrusion 12 is high enough, the protrusion 12 can pass through the clearance hole 2401 and extend into the second through hole 2103. Therefore, in this embodiment, for different models of foot pads 11, positioning inserts 240 with different types of clearance holes 2401 can be replaced; for different models of speakers 1 (the protrusions 12 on the foot pads 11 are different), only the positioning insert 240 needs to be replaced, which improves the versatility of the laser engraving positioning fixture and reduces the cost of laser engraving operations.

[0040] Furthermore, such as Figures 6 to 9As shown, the locking component 230 includes two sets of locking structures, which are spaced apart along the length of the positioning plate 210. Each set of locking structures includes a pressure rod 231, a first mounting base 232, a second mounting base 233, and an elastic buckle 234. The first mounting base 232 and the second mounting base 233 are spaced apart along the width of the positioning plate 210. One end of the pressure rod 231 is hinged to the first mounting base 232 via a hinge shaft. The axis of the hinge shaft extends along the length of the positioning plate 210. The elastic buckle 234 is mounted on the second mounting base 233. The pressure rod 231 can rotate around the hinge shaft, and the other end of the pressure rod 231 can engage with the elastic buckle 234 to fix the speaker 1 on the positioning plate 210.

[0041] In this embodiment, the locking structure achieves rapid clamping and release of the speaker 1 through the cooperation of a pressure rod 231 that can rotate around a hinge axis and an elastic buckle 234. The hinged pressure rod 231 can press down smoothly and provide uniform clamping force, while the elastic buckle 234 ensures the reliability of locking and ease of operation. By setting two sets of locking structures, the two sets of locking structures arranged at intervals work together to effectively prevent the speaker 1 from shifting or vibrating during processing, thereby improving positioning stability and production efficiency.

[0042] Furthermore, the locking member 230 also includes a buffer pad 235, which is fixed to the side of the pressure rod 231 facing the positioning plate 210 and abuts against the speaker 1; and / or, the side of the pressure rod 231 facing the positioning plate 210 conforms to the contour of the upper surface of the speaker 1.

[0043] By fixing the buffer pad 235 to one side of the pressure rod 231 and positioning the buffer pad 235 between the pressure rod 231 and the speaker 1, the buffer pad 235, as a flexible medium, can prevent the hard pressure rod 231 from directly scratching the surface of the speaker 1, thus providing surface protection for the speaker 1. At the same time, it can effectively absorb and disperse the clamping force and vibration during the processing, which not only prevents product deformation caused by excessive local pressure, but also enhances the stability of locking by increasing friction, preventing the speaker 1 from micro-movement during laser engraving, thereby improving processing accuracy while protecting the product appearance.

[0044] The pressing surface of the pressure rod 231 is in close contact with the contour of the upper surface of the speaker 1, which can significantly increase the contact area between the pressure rod 231 and the speaker 1. This allows the locking force to be evenly distributed on the surface of the speaker 1, thereby effectively avoiding local deformation or surface indentation of the product that may be caused by concentrated force. At the same time, the close-fitting structure enhances the stability of the pressure rod 231 in a vibration environment, prevents the speaker 1 from micro-movement or displacement during processing, further ensures the accuracy of laser engraving positioning, and improves the protection level of the product appearance.

[0045] Furthermore, the locking structure also includes an elastic post 236, which is disposed on the second mounting base 233. The elastic post 236 is located on the side of the elastic buckle 234 facing the first mounting base 232. The elastic buckle 234 can press against the elastic post 236 and engage with the pressure rod 231.

[0046] When the pressure rod 231 is pressed down and engages with the elastic buckle 234, the elastic column 236 is compressed. The resulting reverse elastic force provides a stable and flexible support base for the buckle 2342. This not only effectively absorbs the impact and vibration generated during locking and avoids component wear and abnormal noise caused by rigid collisions, but also enhances the stability of the locking state through continuous elastic preload, preventing the buckle 2342 from accidentally loosening due to vibration during processing, thereby improving the overall durability and locking reliability of the equipment.

[0047] Furthermore, the positioning mechanism 200 also includes multiple baffles 250, all of which are arranged around the outer periphery of the speaker 1 on the positioning plate 210.

[0048] In this embodiment, multiple baffles 250 are set around the outer periphery of the speaker 1 on the positioning plate 210 to form a limiting enclosure. Before the locking member 230 presses the upper part of the speaker 1, the speaker 1 is quickly initially positioned. During the processing, the horizontal movement and rotation of the speaker 1 are effectively restricted from multiple directions, thereby forming a three-dimensional constraint with the clamping force of the pressure rod 231. This greatly enhances the overall stability and positioning accuracy of the product during the laser engraving process and ensures processing consistency.

[0049] Furthermore, a baffle 250 is provided on the side of the first mounting base 232 facing the second mounting base 233, a baffle 250 is provided on the side of the second mounting base 233 facing the first mounting base 232, and a baffle 250 is provided on both ends of the positioning plate 210 adjacent to its length direction.

[0050] Before placing speaker 1, the positioning mechanism 200 is rotated 180°, and then speaker 1 is placed on positioning plate 210 (with speaker 1's feet 11 facing the first through hole 2101). At this time, baffles 250 installed on the first mounting base 232 and the second mounting base 233 are used to initially position the two sides of speaker 1 in the width direction, and the other two baffles 250 are used to initially position the two sides of speaker 1 in the length direction. After the initial positioning is completed, the pressure rod 231 is used to fix speaker 1 on positioning plate 210. This embodiment not only achieves rapid and accurate initial positioning and centering of speaker 1 in the horizontal plane, but also forms a stable three-dimensional constraint in conjunction with the locking structure, effectively limiting the displacement and torsion of speaker 1 in various directions during processing, thereby significantly improving the positioning rigidity and the repeatability accuracy of laser engraving.

[0051] Furthermore, the baffle 250 is a flexible board, such as a rubber board or a silicone board, which can prevent the baffle 250 from making rigid contact with the speaker 1 and damaging the speaker 1.

[0052] Furthermore, such as Figure 10 As shown, the elastic buckle 234 includes a base plate 2341, a buckle 2342, and a limiting block 2343. The base plate 2341 is fixed on the second mounting base 233. The base plate 2341 has a mounting groove 23411. The buckle 2342 is fixed in the mounting groove 23411 by bolts. The buckle 2342 includes a buckle body 23421, a locking block 23422, and a pressing plate 23423. The buckle body 23421 is fixed in the mounting step 2102 by bolts. The locking block 23422 protrudes from the buckle body 23421 towards the first mounting base 232. One side forms a bayonet, and the pressing plate 23423 is fixed to the end of the buckle body 23421 away from the base plate 2341, and the pressing plate 23423 is located on the side of the buckle body 23421 away from the first mounting seat 232; the limiting block 2343 is fixed on the base plate 2341 and spaced apart from the buckle body 23421, and the pressing plate 23423 is spaced above the limiting block 2343; the end of the pressure rod 231 away from the first mounting seat 232 can engage with the bayonet, and the pressure rod 231 can be separated from the buckle 2342 by pressing the pressing plate 23423.

[0053] In this embodiment, the pressure rod 231 rotates until it contacts the buckle body 23421 and continues to move downward. At this time, the buckle body 23421 deforms under the pressure of the pressure rod 231 until the end of the pressure rod 231 engages with the buckle. Then, the positioning mechanism 200 with the speaker 1 fixed is flipped to the upper end of the base 100 and connected to the base 100, so that laser engraving can be performed. After the laser engraving is completed, by pressing the pressing plate 23423, the buckle body 23421 can be tilted away from the pressure rod 231. At this time, the pressure rod 231 is popped out under the action of the elastic column 236. The limiting block 2343 located below the pressing plate 23423 can limit the pressing deformation of the pressing plate 23423 and prevent the pressing plate 23423 from being damaged by excessive pressing. This embodiment can achieve precise positioning and rigid locking of the locking block 23422 when the pressure rod 231 is engaged. The lever structure and stroke limitation formed by the pressing plate 23423 and the limiting block 2343 ensure that the unlocking operation is labor-saving and reliable, effectively avoiding damage to parts caused by excessive pressing. The overall structure can significantly improve the convenience of assembly and disassembly operations and the service life of components while ensuring locking stability.

[0054] In this embodiment, the end of the pressure rod 231 away from the hinge axis is a Y-shaped structure. One branch of the Y-shaped structure is engaged with the bayonet, and the other branch is used as the pressing end of the pressure rod 231 to facilitate the engagement operation between the pressure rod 231 and the bayonet.

[0055] Furthermore, such as Figure 7 As shown, the laser engraving positioning fixture of this embodiment also includes two positioning posts 300. The two positioning posts 300 are spaced apart along the length direction of the base 100. The upper end of the positioning post 300 is provided with a positioning groove 3001. The positioning plate 210 has two positioning blocks 211 protruding on one side along its width direction, which correspond one-to-one with the positioning groove 3001. The positioning blocks 211 are inserted and engaged with the positioning groove 3001.

[0056] In this embodiment, positioning grooves 3001 are opened on the upper ends of two positioning posts 300 fixed on the base 100, and a positioning block 211 corresponding to the positioning groove 3001 is set on one side of the positioning plate 210 in the width direction. When the positioning mechanism 200 is connected to the base 100, the positioning block 211 is inserted into the corresponding positioning groove 3001, which plays a role in preventing the positioning mechanism 200 from being mistaken. This enables the positioning mechanism 200 to be positioned with the base 100, and realizes the rapid and accurate positioning and installation of the positioning mechanism 200 on the base 100. This not only effectively eliminates the positional deviation during the installation process, but also significantly enhances the overall rigidity and torsional resistance of the laser engraving positioning fixture during load bearing and processing, thereby ensuring the uniformity of the positional reference of the speaker 1 during the laser engraving process and the stability and reliability of long-term use.

[0057] Furthermore, the bottom of the positioning groove 3001 is provided with a positioning pin 400, and the positioning block 211 is provided with a pin hole 2111 corresponding to the positioning pin 400, and the positioning pin 400 and the pin hole 2111 are inserted and engaged.

[0058] This embodiment achieves secondary precise positioning of the two by adding a precise fit between the positioning pin 400 and the pin hole 2111 in the insertion fit of the positioning groove 3001 and the positioning block 211. This effectively eliminates the slight positional deviation caused by machining tolerances and fit clearances, thereby improving the repeatability of positioning between the positioning plate 210 and the base 100 to a higher level. This ensures that the speaker 1 can maintain an absolutely consistent reference position after multiple disassemblies and reassemblies, greatly guaranteeing the long-term stability of laser engraving operations and the consistency of processed products.

[0059] Furthermore, the laser engraving positioning fixture in this embodiment also includes two positioning seats 500, which correspond one-to-one with the positioning posts 300. The positioning seats 500 are fixed on the base 100 and located on one side of the positioning posts 300 along the width direction of the base 100. The positioning seats 500 are provided with positioning notches 5001 facing the positioning posts 300. The two support posts 220 located on one side of the positioning plate 210 in the width direction can be inserted into the corresponding positioning notches 5001 respectively.

[0060] By engaging the positioning notch 5001 on the positioning seat 500 with the lateral insertion of the support column 220, an additional rigid limit is formed on the positioning plate 210. This structure, combined with the positioning column 300 and the positioning block 211 in the length direction, achieves comprehensive constraint on the two degrees of freedom of the positioning mechanism 200 in the horizontal plane, effectively preventing lateral displacement and torsion that may occur during processing, greatly enhancing the rigidity and stability of the entire fixture system, thereby ensuring the long-term accuracy and reliability of the laser engraving positioning reference.

[0061] In this embodiment, the base 100 has multiple oblong holes 1001. Bolts pass through the oblong holes 1001 and are screwed into the laser engraving equipment to fix the base 100. The oblong holes 1001 can adjust the installation position of the base 100 so that the first through hole 2101 on the positioning plate 210 is directly facing the laser beam used for laser engraving. In this embodiment, a reliable mechanical connection can be established between the base 100 and the laser engraving equipment.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A laser-engraved positioning fixture for positioning a speaker, characterized in that, The laser-engraved positioning fixture includes a base and a positioning mechanism. The positioning mechanism includes a positioning plate, support columns, locking components, and positioning inserts. The positioning plate is connected to multiple support columns, and the end of each support column away from the positioning plate is detachably connected to the base. The speaker is fixed to the positioning plate by the locking components. The positioning plate has a first through hole and a mounting step along its thickness direction. The first through hole is directly opposite the speaker's foot pad. The mounting step is located on the side of the positioning plate facing the base and is arranged around the edge of the first through hole. The positioning insert is annular and detachably fixed to the mounting step. The positioning insert has several clearance holes, which correspond one-to-one with the protrusions on the foot pad.

2. The laser engraving positioning fixture according to claim 1, characterized in that, The step surface of the installation step is provided with a second through hole corresponding to the avoidance hole, and the second through hole is larger than the avoidance hole.

3. The laser engraving positioning fixture according to claim 1, characterized in that, The locking component includes two sets of locking structures, which are spaced apart along the length of the positioning plate. Each set of locking structures includes a pressure rod, a first mounting base, a second mounting base, and an elastic buckle. The first mounting base and the second mounting base are spaced apart along the width of the positioning plate. One end of the pressure rod is hinged to the first mounting base via a hinge shaft, the axis of which extends along the length of the positioning plate. The elastic buckle is mounted on the second mounting base. The pressure rod can rotate around the hinge shaft, and the other end of the pressure rod can engage with the elastic buckle to fix the speaker on the positioning plate.

4. The laser engraving positioning fixture according to claim 3, characterized in that, The locking element further includes a buffer pad, which is fixed to the side of the pressure rod facing the positioning plate and abuts against the speaker; and / or, The side of the pressure rod facing the positioning plate is aligned with the contour of the upper surface of the speaker; and / or, The locking structure further includes an elastic post, which is disposed on the second mounting base. The elastic post is located on the side of the elastic buckle facing the first mounting base, and the elastic buckle can press against the elastic post and engage with the pressure rod.

5. The laser engraving positioning fixture according to claim 4, characterized in that, The positioning mechanism also includes multiple baffles, all of which are arranged on the positioning plate around the outer periphery of the speaker.

6. The laser engraving positioning fixture according to claim 5, characterized in that, The first mounting base is provided with a baffle on the side facing the second mounting base, the second mounting base is provided with a baffle on the side facing the first mounting base, and the positioning plate is provided with a baffle at each end adjacent to its length direction.

7. The laser engraving positioning fixture according to claim 3, characterized in that, The elastic buckle includes a base plate, a buckle, and a limiting block. The base plate is fixed to the second mounting base and has an installation step. The buckle is fixed in the installation step by bolts. The buckle includes a buckle body, a locking block, and a pressing plate. The buckle body is fixed in the installation step by bolts. The locking block protrudes from the buckle body on the side facing the first mounting base to form a locking slot. The pressing plate is fixed to the end of the buckle body away from the base plate and is located on the side of the buckle body away from the first mounting base. The limiting block is fixed to the base plate and spaced apart from the buckle body. The pressing plate is spaced above the limiting block. The end of the pressure rod away from the first mounting base can engage with the locking slot. Pressing the pressing plate can separate the pressure rod from the buckle.

8. The laser engraving positioning fixture according to any one of claims 1 to 7, characterized in that, It also includes two positioning posts, which are spaced apart along the length of the base. The upper end of each positioning post is provided with a positioning groove. The positioning plate has two positioning blocks protruding along one side of its width direction, which correspond one-to-one with the positioning groove. The positioning blocks are inserted into the positioning groove.

9. The laser engraving positioning fixture according to claim 8, characterized in that, The bottom of the positioning groove is provided with a positioning pin, and the positioning block is provided with a pin hole corresponding to the positioning pin. The positioning pin is inserted into the pin hole.

10. The laser engraving positioning fixture according to claim 8, characterized in that, It also includes two positioning seats, which correspond one-to-one with the positioning posts. The positioning seats are fixed on the base and located on one side of the positioning posts along the width direction of the base. The positioning seats are provided with positioning notches facing the positioning posts. The two support posts located on one side of the width direction of the positioning plate can be inserted into the corresponding positioning notches respectively.

Images