Positioning tool for laser marking of a projection device

Abstract

The application provides a positioning tool for laser marking of a projection device, relates to the positioning technical field of laser marking, and comprises a plurality of threaded holes which are equidistantly arranged on a rotating disc, a bottom disc is threadedly installed in the threaded hole, a plurality of variable springs are equidistantly installed on the side wall of the bottom disc, the upper ends of the plurality of variable springs are provided with a top disc, a pull rod is installed on the top disc, the pull rod is slidingly connected in the bottom disc, and the lower end of the pull rod is provided with a tension spring. The positioning tool adopts a variable spring as a main fixing element, solves the problems of complex fixing mode and time consumption of a traditional tool, when it is necessary to fix the shell of the projection device, an operator only needs to place the shell on the rotating disc, then pushes down the synchronous disc, and the whole fixing process can be completed within a few seconds. After being compressed, the variable spring is automatically expanded outward, uniformly adheres to the outer wall surface of the shell, and forms a flexible surrounding fixation in all directions.

Description

Technical Field

[0001] This invention relates to the field of positioning technology for laser marking, and more specifically, to a positioning fixture for laser marking on a projection device. Background Technology

[0002] In modern manufacturing and precision machining, laser marking technology has become an important means of product identification, serial number engraving, and trademark production. As a key component, the laser marking system of projection equipment directly affects the marking quality and production efficiency through its working accuracy and stability. The working principle of laser marking with projection equipment is to precisely focus the energy of a laser beam on the surface of a workpiece to achieve local melting, vaporization, or chemical changes in the material, thereby forming a permanent mark on the workpiece surface. This process requires extremely high positioning accuracy from the equipment, typically reaching the micrometer level. Any slight positional deviation may lead to quality problems such as inaccurate marking position, character distortion, and unclear lines. Therefore, the projection equipment must remain stable during laser marking operations, without any vibration, displacement, or tilting. At the same time, different specifications and shapes of workpieces have different requirements for positioning fixtures. Some need to be placed horizontally, some need to be tilted at a certain angle, and some need to be marked on multiple sides. This requires the positioning fixture to have good adaptability and adjustability. In addition, the heat and light radiation generated during laser marking also place special requirements on the materials and structure of the positioning fixture, requiring it to have good heat resistance and deformation resistance.

[0003] However, most positioning fixtures used for laser marking on projection equipment on the market currently suffer from significant technical defects and inconveniences in their fixing mechanisms. Traditional positioning fixtures typically employ fixing methods such as bolt tightening, snap-locking, or magnetic adsorption. While these methods can achieve a certain degree of equipment fixation, they reveal numerous problems in actual operation. Bolt tightening requires specialized tools such as wrenches, making the operation cumbersome and time-consuming. This is particularly problematic in production environments where frequent adjustments to workpiece positions or changes to different workpiece specifications are necessary, severely impacting production efficiency. Snap-locking methods, while relatively simple to operate, are often only applicable to specific equipment specifications, lacking versatility. Furthermore, long-term use can lead to issues such as snap-lock wear and insecure locking. More seriously, most existing positioning fixtures lack rapid adjustment and precise positioning functions. Operators must repeatedly experiment and adjust to find the optimal fixing position, wasting considerable debugging time and potentially causing inaccurate positioning due to human error, thus affecting marking quality. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, the present invention provides a positioning fixture for laser marking of projection equipment, so as to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a positioning fixture for laser marking in a projection device, comprising a rotating disk; further comprising a fixing mechanism, the fixing mechanism comprising a plurality of threaded holes equally spaced on the rotating disk, a bottom plate being threadedly installed in the threaded holes, a plurality of deformation springs being equally spaced on the side wall of the bottom plate, a top plate being installed at the upper end of the plurality of deformation springs, a pull rod being installed on the top plate, the pull rod being slidably connected in the bottom plate, a tension spring being installed at the lower end of the pull rod, a locking block being installed at the lower end of the tension spring, a parallel block being symmetrically locked on the side wall of each locking block, and a synchronization disk being installed at the lower end of the plurality of parallel blocks; further comprising a connecting mechanism, the connecting mechanism comprising two lifting rods mounted on the synchronization disk, and a fixing sleeve being slidably installed on the two lifting rods.

[0008] Preferably, the fixing mechanism further includes a fixed base mounted on the external equipment and a swing frame rotatably connected to the fixed base. The rotating disk is rotatably connected to the swing frame, and the two fixed sleeves are fixedly mounted on the swing frame. This layered connection structure provides a stable foundation support for the entire positioning fixture, and the fixed base ensures a reliable connection between the equipment and the external equipment.

[0009] Preferably, a rotary motor is fixedly installed on the swing frame, and a rotary belt is engaged with the extended end of the rotary motor and the rotating disk. A swing motor is fixedly installed on the fixed base, and a swing belt is engaged with the extended end of the swing motor and the swing frame. The dual-motor drive system realizes precise electric control of the projection device in two degrees of freedom: horizontal rotation and vertical swing.

[0010] Preferably, the outer shell is fitted onto the rotating disk, and multiple deformable springs are respectively fitted onto the outer wall of the outer shell. This fitted installation method ensures a tight fit between the outer shell and the rotating disk. The evenly distributed design of multiple deformable springs allows them to surround the outer wall of the outer shell in all directions. When compressed, the deformable springs expand outward to form a flexible clamping force, which not only ensures sufficient fixing strength but also avoids damage to the surface of the outer shell, achieving a fast, reliable and gentle fixing effect.

[0011] Preferably, each of the card blocks has a handle coaxially mounted at its lower end, and the two parallel blocks are in a through-hole state. The handle provides the operator with a convenient manual control point, making the operation of the card blocks more intuitive and labor-saving.

[0012] Preferably, the connecting mechanism further includes an internal groove formed within the fixed sleeve, in which multiple elastic plates are installed at equal intervals. Multiple annular grooves are formed at equal intervals on the side wall of the lifting rod, and the elastic plates are engaged within the annular grooves. This mating structure of the elastic plates and the annular grooves forms a precise one-way locking mechanism. The equal-interval installation of the elastic plates within the internal grooves ensures a uniform distribution of locking force.

[0013] Preferably, each of the lifting rods has a vertical groove, and a six-leaf rod is slidably installed in the vertical groove. A follower ring is installed at the lower end of the six-leaf rod and is fitted onto the lifting rod. The sliding design of the six-leaf rod in the vertical groove provides operating space for the unlocking mechanism. The follower ring can be inserted into the elastic sheet when needed to prevent it from bending inward, thereby temporarily releasing the engagement between the elastic sheet and the annular groove.

[0014] Preferably, each of the six-leaf rods is equipped with a lifting ring at its upper end, and two lifting rings are equipped with a release disc. The release disc and the synchronization disc are coaxially arranged, and the release disc is slidably connected to the fixed sleeve. The design of the double lifting rings ensures the smooth movement of the release disc, and the coaxial arrangement of the release disc and the synchronization disc achieves the coordinated and unified unlocking and locking operations.

[0015] Preferably, a bottom ring is coaxially mounted on the lower end of the fixed sleeve, and a return spring is mounted on the bottom ring. The other end of the return spring abuts against the lifting rod, and the return spring provides an automatic reset function for the lifting rod.

[0016] Preferably, the synchronizing disc and the unspinning disc are located at the upper end of the rotating belt. This positional design ensures that the synchronizing disc and the unspinning disc will not interfere with the rotating belt during rotation.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a positioning fixture for laser marking of projection equipment, which has the following beneficial effects:

[0019] This positioning fixture uses deformable springs as the main fixing element, solving the problems of complexity and time-consuming traditional fixture fixing methods. When fixing the projection equipment shell, the operator only needs to place the shell on the rotating disk and then push the synchronous disk downwards. The entire fixing process can be completed within seconds. After being compressed, the deformable spring automatically expands outwards, evenly conforming to the outer surface of the shell, forming a multi-directional flexible enclosure fixation. This flexible fixing method is not only simple and quick to operate, requiring no special tools, but also adaptable to shells of different shapes and sizes, avoiding the local stress concentration and workpiece damage problems that may be caused by traditional rigid fixing. The flexible characteristics of the deformable spring allow it to provide sufficient fixing force while avoiding scratches or indentations on the shell surface, making it particularly suitable for precision workpieces with high surface quality requirements. This one-click rapid fixing system greatly improves operating efficiency, reduces equipment debugging time, and allows operators to devote more energy to controlling the marking quality.

[0020] This tooling design incorporates an adaptive fixing mechanism that automatically adjusts fixing parameters based on different shell sizes. The bottom plate can be installed in threaded holes at different positions via threaded connections, enabling coarse adjustment of the basic dimensions. Meanwhile, the deformation spring provides fine adaptive adjustment. Regardless of how the shell size changes within the design range, the deformation spring automatically adjusts its deformation degree to ensure that the appropriate fixing force is applied to the shell. This adaptive mechanism allows the same tooling to be used for various specifications of projection equipment shells, greatly improving the tooling's versatility and efficiency. Operators no longer need to frequently change tooling of different specifications or perform complex parameter adjustments. After a simple coarse adjustment, the system can automatically complete precise adaptation and fixing. This design not only reduces equipment investment costs but also simplifies production line management complexity, making it particularly suitable for multi-variety, small-batch production models.

[0021] This fixture employs a one-way locking system using an elastic plate and an annular groove, achieving precise locking and rapid adjustment of the lifting rod position. The special design of the elastic plate allows it to pass smoothly downwards, while firmly locking into the annular groove when needed, forming a reliable one-way lock. This locking mechanism is not only reliable but also flexible in adjustment, allowing operators to quickly adjust the height of the lifting rod to meet the marking requirements of workpieces of different thicknesses. More ingeniously, the system also features a dedicated unlocking mechanism. By inserting the follower coil, the elastic plate can temporarily lose its locking function, facilitating rapid position adjustment. This precise locking and unlocking mechanism ensures absolute stability of the fixture during operation while maintaining ease of adjustment, improving the equipment's flexibility and operational efficiency.

[0022] In summary, this positioning fixture for laser marking in projection equipment solves the problems of difficult fixing, complex adjustment, and poor adaptability of traditional positioning fixtures through technological innovations such as a fast and convenient flexible fixing system, providing the laser marking industry with an efficient, accurate, and convenient positioning solution. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a positioning fixture for laser marking on a projection device according to the present invention;

[0024] Figure 2 In this invention Figure 1 A schematic diagram of the rear structure;

[0025] Figure 3 This is an exploded structural diagram of the rotating disk and the deformation spring in this invention;

[0026] Figure 4 This is a schematic diagram of the deformation spring and the synchronizing disk in this invention;

[0027] Figure 5 This is a schematic diagram of the structure of the synchronization disk and the unsynchronization disk in this invention;

[0028] Figure 6 This is a schematic diagram of the deformation spring and the tie rod in this invention;

[0029] Figure 7 This is a schematic diagram of the rotating disk in this invention;

[0030] Figure 8 This is a schematic diagram of the structure of the fixing sleeve and the lifting rod in this invention;

[0031] Figure 9 This is a cross-sectional view of the fixing sleeve in this invention;

[0032] Figure 10 This is a schematic diagram of the six-leaf rod structure in this invention.

[0033] In the diagram: 11. Rotary disc; 21. Threaded hole; 22. Bottom disc; 23. Deformation spring; 24. Top disc; 25. Pull rod; 26. Tension spring; 27. Locking block; 28. Parallel block; 29. ​​Synchronizing disc; 31. Lifting rod; 32. Fixing sleeve; 33. Internal groove; 34. Elastic sheet; 35. Annular groove; 36. Vertical groove; 37. Hexagonal rod; 38. Follower ring; 39. Lifting ring; 210. Fixed base; 211. Swing frame; 212. Rotary motor; 213. Rotary belt; 214. Swing motor; 215. Swing belt; 216. Outer shell; 217. Handle; 310. Release disc; 311. Bottom ring; 312. Return spring. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0037] Please see Figures 1 to 10 A positioning fixture for laser marking in a projection device includes a rotating disk 11 and a fixing mechanism. The fixing mechanism includes multiple threaded holes 21 evenly spaced on the rotating disk 11. A bottom disk 22 is threaded into the internal threads of the threaded holes 21. Multiple deformation springs 23 are evenly spaced on the side wall of the bottom disk 22. A top disk 24 is mounted on the upper end of the multiple deformation springs 23. A pull rod 25 is mounted on the top disk 24 and slidably connected to the bottom disk 22. A tension spring 26 is mounted on the lower end of the pull rod 25. A locking block 27 is mounted on the lower end of the tension spring 26. Parallel blocks 28 are symmetrically engaged on the side wall of each locking block 27. A synchronization disk 29 is mounted on the lower end of the multiple parallel blocks 28. The fixing mechanism also includes a fixing seat 21 mounted on an external device. A rocker arm 211 is rotatably connected to a fixed base 210. A rotating disk 11 is rotatably connected to the rocker arm 211. Two fixed sleeves 32 are fixedly installed on the rocker arm 211. A rotary motor 212 is fixedly installed on the rocker arm 211. A rotary belt 213 is meshed with the extended end of the rotary motor 212 and the rotating disk 11. A rocker motor 214 is fixedly installed on the fixed base 210. A rocker belt 215 is meshed with the extended end of the rocker motor 214 and the rocker arm 211. A housing 216 is attached to the rotating disk 11. Multiple deformation springs 23 are attached to the outer wall of the housing 216. A handle 217 is coaxially installed at the lower end of each locking block 27, and the two parallel blocks 28 are in a through-hole state.

[0038] When marking the projection device housing 216, the housing 216 must first be quickly fixed onto the rotating disk 11, and multiple deformation springs 23 should be pressed against the side walls of the housing 216. After the housing 216 is fixed, both sides of the synchronous disk 29 are pushed downwards synchronously. Since the locking block 27 is locked between the two parallel blocks 28, it will drive multiple locking blocks 27 and tension springs 26 to move downwards. The tension spring 26 is connected to the pull rod 25, which will drive the pull rod 25 and the top disk 24 to move downwards synchronously. Since the bottom disk 22 is threaded into the threaded hole 21 and is in a fixed state, the top disk 24 and the bottom disk 22 are in a fixed state. As the distance between them gets closer, they press on multiple deformation springs 23, causing the deformation springs 23 to expand outward and adhere to the outer wall of the outer shell 216. Since multiple deformation springs 23 simultaneously abut against the outer shell 216, the outer shell 216 is fixed. Furthermore, since the deformation springs 23 are flexible, they will not generate large local stresses that could cause them to break, thus completing the fixing process. After fixing, the swing motor 214 can drive the swing frame 211 to rotate along the fixed frame, and the rotary motor 212 can drive the rotary disk 11 to rotate along the swing frame 211. Therefore, the direction of the outer shell 216 is adjusted to meet the positioning requirements of laser marking.

[0039] When marking is required for housings 216 of different sizes, the positions of multiple deformation springs 23 need to be adjusted. Since the bottom plate 22 is threaded onto the threaded hole 21, the bottom plate 22 can be installed in the corresponding threaded hole 21 according to the shape and size of the housing 216. After the connection is completed, the locking block 27 needs to be locked onto the parallel block 28. Since the bottom plate 22 and the locking block 27 are connected by a tension spring 26, and both ends of the two parallel blocks 28 are in a connected state, the locking block 27 can be locked into the parallel block 28 on either side, thus completing the adjustment process.

[0040] The connecting mechanism includes two lifting rods 31 mounted on the synchronous disc 29. Fixed sleeves 32 are slidably mounted on the two lifting rods 31. The connecting mechanism also includes an internal groove 33 formed within the fixed sleeve 32. Multiple elastic plates 34 are evenly spaced within the internal groove 33. Multiple annular grooves 35 are evenly spaced on the side walls of the lifting rods 31, and the elastic plates 34 are engaged within the annular grooves 35. Each lifting rod 31 has a vertical groove 36, and a six-leaf rod 37 is slidably mounted within the vertical groove 36. A follower coil 3 is mounted at the lower end of the six-leaf rod 37. 8. The follower ring 38 is fitted onto the lifting rod 31. Each six-leaf rod 37 has a lifting ring 39 installed at its upper end. The two lifting rings 39 are fitted with a release plate 310. The release plate 310 and the timing plate 29 are coaxially arranged. The release plate 310 is slidably connected to the fixed sleeve 32. The lower end of the fixed sleeve 32 is coaxially fitted with a bottom ring 311. The bottom ring 311 is fitted with a return spring 312. The other end of the return spring 312 abuts against the lifting rod 31. The timing plate 29 and the release plate 310 are respectively located at the upper end of the rotating belt 213.

[0041] When the synchronizing disc 29 is pulled down, the two lifting rods 31 move down synchronously. Due to the unidirectional setting of the elastic plate 34, the lifting rod 31 is not restricted in its downward movement until it is adjusted to the corresponding position. After that, the elastic plate 34 is locked in the corresponding annular groove 35, ensuring unidirectional locking. When it is necessary to disconnect the connection, since the disconnecting disc 310 is connected to the two lifting rings 39, it drives the disconnecting disc 310 and the synchronizing disc 29 to move down synchronously. At this time, the follower ring 38 will be inserted into multiple elastic plates 34 to prevent inward bending and locking with the annular groove 35. At this time, the follower ring 38 is released and the synchronizing disc 29 is pulled up to disconnect the connection. After the position adjustment of the lifting rod 31 is completed, the disconnecting disc 310 is pulled up again to make the elastic plate 34 lock in the annular groove 35, thus completing the fixing process.

[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for laser marking on a projection device, comprising a rotating disk (11); characterized in that: It also includes a fixing mechanism, which includes multiple threaded holes (21) equally spaced on the rotating disk (11). A bottom plate (22) is threaded into the threaded holes (21). Multiple deformation springs (23) are equally spaced on the side wall of the bottom plate (22). A top plate (24) is installed on the upper end of the multiple deformation springs (23). A pull rod (25) is installed on the top plate (24). The pull rod (25) is slidably connected in the bottom plate (22). A tension spring (26) is installed on the lower end of the pull rod (25). A locking block (27) is installed on the lower end of the tension spring (26). A parallel block (28) is symmetrically locked on the side wall of each locking block (27). A synchronization disk (29) is installed on the lower end of the multiple parallel blocks (28). The rotating disk (11) is fitted with... The enclosure (216) has multiple deformable springs (23) attached to the outer wall of the enclosure (216). The bottom plate (22) can be installed in the threaded holes (21) at different positions through threaded connection to achieve coarse adjustment of the basic size. The deformable springs (23) provide fine adaptive adjustment. No matter how the size of the enclosure (216) changes within the design range, the deformable springs (23) can automatically adjust their deformation degree to ensure that a suitable fixing force is applied to the enclosure (216). After being compressed, the deformable springs (23) will automatically expand outward and evenly fit the outer wall surface of the enclosure (216) to form a multi-directional flexible enclosure fixation. The enclosure also includes a connecting mechanism, which includes two lifting rods (31) mounted on the synchronous plate (29). Fixing sleeves (32) are slidably installed on the two lifting rods (31).

2. The positioning fixture for laser marking in a projection device according to claim 1, characterized in that: The fixing mechanism also includes a fixed base (210) installed on an external device and a swing frame (211) rotatably connected to the fixed base (210). The rotating disk (11) is rotatably connected to the swing frame (211), and the two fixed sleeves (32) are fixedly installed on the swing frame (211).

3. The positioning fixture for laser marking in a projection device according to claim 2, characterized in that: A rotary motor (212) is fixedly installed on the swing frame (211). A rotary belt (213) is meshed with the extended end of the rotary motor (212) and the rotating disk (11). A swing motor (214) is fixedly installed on the fixed base (210). A swing belt (215) is meshed with the extended end of the swing motor (214) and the swing frame (211).

4. The positioning fixture for laser marking in a projection device according to claim 1, characterized in that: Each of the card blocks (27) has a handle (217) coaxially mounted at its lower end, and the two parallel blocks (28) are in a through-hole state.

5. The positioning fixture for laser marking in a projection device according to claim 1, characterized in that: The connecting mechanism also includes an internal groove (33) opened in the fixed sleeve (32), in which multiple elastic pieces (34) are installed at equal intervals, and multiple annular grooves (35) are opened at equal intervals on the side wall of the lifting rod (31), and the elastic pieces (34) are stuck in the annular grooves (35).

6. The positioning fixture for laser marking in a projection device according to claim 5, characterized in that: Each of the lifting rods (31) is provided with a vertical groove (36), and a six-leaf rod (37) is slidably installed in the vertical groove (36). A follower ring (38) is installed at the lower end of the six-leaf rod (37), and the follower ring (38) is sleeved on the lifting rod (31).

7. The positioning fixture for laser marking in a projection device according to claim 6, characterized in that: Each of the six-leaf rods (37) has a lifting ring (39) installed at its upper end. Two lifting rings (39) are equipped with a disassembly disc (310). The disassembly disc (310) and the synchronization disc (29) are coaxially arranged. The disassembly disc (310) is slidably connected to the fixed sleeve (32).

8. The positioning fixture for laser marking in a projection device according to claim 7, characterized in that: The lower end of the fixed sleeve (32) is coaxially mounted with a bottom ring (311), and a return spring (312) is mounted on the bottom ring (311). The other end of the return spring (312) abuts against the lifting rod (31).

9. A positioning fixture for laser marking in a projection device according to claim 8, characterized in that: The synchronizing disc (29) and the unwinding disc (310) are located at the upper end of the rotating belt (213).

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