Follow-up hovering mechanism and laser engraving machine

Abstract

The utility model discloses a kind of follow-up hovering mechanism and laser engraving machine, it is related to laser engraving technical field, the follow-up hovering mechanism includes mounting bracket, load slider and constant force component, the load slider is slidably arranged in the mounting bracket;At least part of the constant force component is arranged in the mounting bracket, the constant force component is connected to the load slider, and the constant force component is used to provide constant force for the load slider.The technical scheme provided by the utility model aims to improve the precision of the protective cover hovering, improve the user's experience.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving technology, and in particular to a follow-up hovering mechanism and a laser engraving machine. Background Technology

[0002] Existing laser engraving machines are typically equipped with a retractable protective shield. This shield protects operators from laser radiation and splashes during the engraving process, while also preventing dust and debris from entering the engraving area, ensuring engraving quality and the normal operation of the equipment.

[0003] Protective covers typically use tension springs as elastic connecting elements to achieve hovering. However, the elastic force of the tension spring increases with the increase of the stretching length, resulting in different hovering forces for the protective cover at different positions. This makes it impossible to achieve precise hovering, which makes the protective cover prone to shaking when hovering, affecting the stability and safety of operation. Utility Model Content

[0004] The main purpose of this invention is to propose a follow-up hovering mechanism and a laser engraving machine, which aims to improve the accuracy of the protective cover's hovering and enhance the user experience.

[0005] To achieve the above objectives, this utility model proposes a follow-up hovering mechanism, which includes:

[0006] Mounting bracket;

[0007] A load slider, wherein the load slider is slidably disposed on the mounting bracket; and

[0008] A constant force component, at least a portion of which is disposed on the mounting bracket, is connected to the load slider and is used to provide a constant force to the load slider.

[0009] In one embodiment, the constant force component includes:

[0010] Constant force elastic element;

[0011] A mounting slider is slidably disposed on the mounting bracket, and one end of the constant force elastic element is connected to the mounting slider; and

[0012] A connector, one end of which is connected to the mounting slider, and the other end of which is connected to the load slider.

[0013] In one embodiment, the mounting slider is provided with a clamping groove, and one end of the constant force elastic element passes through the clamping groove;

[0014] The mounting slider is provided with a mounting hole that communicates with the pressing groove, the constant force elastic element is provided with a connecting hole, and the constant force assembly further includes a locking element, which passes through the mounting hole and the connecting hole to press the constant force elastic element.

[0015] In one embodiment, the mounting bracket includes:

[0016] The frame includes a first slide rail and a second slide rail, which are arranged parallel to each other. At least a portion of the load slider is slidably disposed on the first slide rail, and at least a portion of the mounting slider is disposed on the second slide rail.

[0017] A fixed pulley is rotatably connected to the frame. The fixed pulley is located at one end of the first slide rail and the second slide rail, and the connecting member is wound around the fixed pulley.

[0018] In one embodiment, the load slider is provided with at least a first roller and a second roller, the first roller and the second roller are slidably disposed on the first slide rail, and the rotation axes of the first roller and the second roller are arranged at an angle.

[0019] In one embodiment, the load slider includes a sliding part and a connecting part connected to each other, the sliding part being disposed on the first slide rail, and the connecting part extending out of the first slide rail;

[0020] Both the first roller and the second roller include multiple sets, with at least two sets of the first rollers respectively located on a first side and a third side opposite to the sliding portion; and at least two sets of the second rollers respectively located on a second side and a fourth side opposite to the sliding portion.

[0021] In one embodiment, the first slide rail includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected in sequence, wherein the first sidewall and the third sidewall are disposed opposite to each other, and the second sidewall and the fourth sidewall are disposed opposite to each other.

[0022] The circumferential surface of the first roller abuts against the second sidewall and the fourth sidewall, and the end face of the first roller abuts against the first sidewall or the third sidewall. The circumferential surface of the second roller abuts against the first sidewall and the third sidewall, and the end face of the second roller abuts against the second sidewall or the fourth sidewall.

[0023] In one embodiment, the constant force assembly further includes a guide roller disposed between the constant force elastic member and the mounting slider, with one end of the constant force elastic member bypassing one side of the guide roller and connected to the mounting slider.

[0024] This utility model also proposes a laser engraving machine, which includes a follow-up suspension mechanism and a protective cover as described above, wherein the protective cover is connected to the load slider.

[0025] In one embodiment, both the mounting bracket and the load slider include multiple components, with each load slider corresponding to one of the mounting brackets, and the multiple load sliders connected to the same constant force component.

[0026] The technical solution of this utility model connects the protective cover of a laser engraving machine to a load slider. The load slider is slidably mounted on a mounting bracket, and the protective cover can move relative to the mounting bracket following the load slider. After the follow-up hovering mechanism is installed in the laser engraving machine, the processing space of the laser engraving machine can be opened or closed by raising or lowering the protective cover relative to the mounting bracket. A constant force component is at least partially mounted on the mounting bracket and connected to the load slider. The constant force component transmits force to the load slider, enabling the load slider and the protective cover to overcome their own weight and thus hover at any position within the movement stroke. The constant force component ensures that the force on the load slider and the protective cover is constant throughout the entire movement stroke, avoiding instability in the hovering position due to force changes and improving the accuracy of the protective cover's hovering position. Users can adjust the position of the protective cover using the follow-up hovering mechanism of this application to ensure that the protective cover is stably hovered at the desired position without worrying about it suddenly falling or failing to hover stably. Compared with traditional hovering mechanisms, the follow-up hovering mechanism of this application provides a stabilizing force, effectively solving the problem of unstable hovering position caused by changes in the elastic force of the tension spring, and improving the user experience. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the follow-up hovering mechanism in one embodiment of this utility model;

[0029] Figure 2 A schematic diagram of the structure of the follow-up hovering mechanism without the mounting bracket in one embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the structure of some constant force components in one embodiment of this utility model;

[0031] Figure 4An exploded structural diagram of some constant force components in one embodiment of this utility model;

[0032] Figure 5 A schematic diagram of the frame structure in one embodiment of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the load slider in one embodiment of the present invention.

[0034] Explanation of icon numbers:

[0035] 100. Follow-up hovering mechanism; 1. Mounting bracket; 11. Frame; 12. Fixed pulley; 13. First slide rail; 131. First side wall; 132. Second side wall; 133. Third side wall; 134. Fourth side wall; 14. Second slide rail; 2. Load slider; 21. Sliding part; 211. First side; 212. Second side; 213. Third side; 214. Fourth side; 22. Connecting part; 23. First roller; 24. Second roller; 3. Constant force assembly; 31. Constant force elastic element; 311. Connecting hole; 32. Mounting slider; 321. Pressing groove; 322. Mounting hole; 33. Connecting piece; 34. Locking piece; 35. Guide roller.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] Please refer to the reference. Figures 1 to 6 As shown, this utility model proposes a follow-up hovering mechanism 100, which includes a mounting bracket 1, a load slider 2, and a constant force component 3. The load slider 2 is slidably disposed on the mounting bracket 1; at least part of the constant force component 3 is disposed on the mounting bracket 1 and connected to the load slider 2. The constant force component 3 is used to provide a constant force to the load slider 2.

[0041] In this embodiment, the mounting bracket 1 serves as a support and mounting structure, providing support and mounting for the load slider 2 and the constant force component 3. The load slider 2 is primarily used to connect the protective cover of the laser engraving machine. The load slider 2 is slidably mounted on the mounting bracket 1, and the protective cover can move relative to the mounting bracket 1 following the load slider 2. After the follow-up hovering mechanism 100 is installed in the laser engraving machine, the processing space of the laser engraving machine can be opened or closed by raising or lowering the protective cover relative to the mounting bracket 1. The constant force component 3 is the core component in the follow-up hovering mechanism 100 that realizes the hovering function, providing a hovering force for the load slider 2 and the protective cover when no external force is applied. The constant force component 3 is at least partially mounted on the mounting bracket 1 and connected to the load slider 2. The constant force component 3 transmits force to the load slider 2, enabling the load slider 2 and the protective cover to overcome their own weight and thus achieve hovering at any position within the movement stroke. The setting of the constant force component 3 ensures that the force on the load slider 2 and the protective cover is constant throughout the entire movement stroke, avoiding instability in the hovering position due to force changes and improving the accuracy of the protective cover's hovering position. Users can adjust the position of the protective cover using the follow-up hovering mechanism 100 of this application, ensuring that the protective cover hovers stably in the desired position without worrying about it suddenly falling or failing to hover stably. Compared with traditional hovering mechanisms, the follow-up hovering mechanism 100 of this application provides a stabilizing force that effectively solves the problem of unstable hovering position caused by changes in the elastic force of the tension spring, thus improving the user experience.

[0042] In practical implementation, the mounting bracket 1 can be connected to the frame of the laser engraving machine to achieve modular installation of the follow-up hovering mechanism 100. Optionally, the mounting bracket 1 can be detachably connected to the frame of the laser engraving machine using screws or snap-fit ​​structures. The follow-up hovering mechanism 100 of this application is easy to install and maintain, suitable for various types of laser engraving machines, and can meet the usage needs in different scenarios.

[0043] In embodiments of this utility model, such as Figures 1 to 4 As shown, the constant force component 3 includes a constant force elastic element 31, a mounting slider 32, and a connector 33. The mounting slider 32 is slidably mounted on the mounting bracket 1. One end of the constant force elastic element 31 is connected to the mounting slider 32. One end of the connector 33 is connected to the mounting slider 32, and the other end of the connector 33 is connected to the load slider 2.

[0044] In this embodiment, the constant force elastic element 31 can maintain a constant force within a certain stroke. Even if the constant force elastic element 31 is stretched or compressed due to the movement of the load slider 2, the force output by the constant force elastic element 31 does not change, thereby providing a constant force within the movement stroke range of the load slider 2 and the protective cover, and avoiding instability in the hovering position of the protective cover due to changes in force.

[0045] Specifically, one end of the constant force elastic element 31 is connected to the mounting slider 32, which is slidably mounted on the mounting bracket 1. Both ends of the connecting element 33 are connected to the mounting slider 32 and the load slider 2, respectively, to form a complete transmission chain. The connecting element 33 is used to transmit movement and force between the mounting slider 32 and the load slider 2. When the load slider 2 moves, it drives the mounting slider 32 to slide relative to the mounting bracket 1 via the connecting element 33. That is, the movement of the load slider 2 within its stroke is transmitted to the constant force elastic element 31 through the connecting element 33 and the mounting slider 32. The constant force elastic element 31 correspondingly stretches or compresses to compensate for the movement distance of the mounting slider 32. In this embodiment, the movement trajectory of the mounting slider 32 relative to the mounting bracket 1 is relatively fixed, so that the force transmission direction between the mounting slider 32 and the connecting element 33 is relatively fixed, thereby improving the stability of the protective cover's movement.

[0046] In actual implementation, the constant force elastic element 31 is fixedly positioned. The constant force elastic element 31 can be mounted on the mounting bracket 1 or on other components of the laser engraving machine. The constant force elastic element 31 can be a constant force spring, a nitrogen spring, etc. The connecting part 33 can be a steel wire rope, a timing belt, a flat belt, or a nylon rope, etc.

[0047] Optionally, the constant force elastic element 31 is a coiled constant force spring to provide sufficient deformation stroke while reducing the installation space. In this embodiment, one end of the constant force elastic element 31 is connected to the mounting slider 32.

[0048] Optionally, the constant force elastic element 31 can be detachably connected to the mounting slider 32 by means of clips or screws.

[0049] In some embodiments, the constant force component 3 and the constant force elastic element 31 can be replaced by a counterweight with a constant weight.

[0050] In embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the mounting slider 32 is provided with a clamping groove 321, and one end of the constant force elastic element 31 passes through the clamping groove 321; the mounting slider 32 is provided with a mounting hole 322 communicating with the clamping groove 321, the constant force elastic element 31 is provided with a connecting hole 311, and the constant force assembly 3 also includes a locking element 34, which passes through the mounting hole 322 and the connecting hole 311 to clamp the constant force elastic element 31.

[0051] Specifically, when assembling the constant force elastic element 31 and the mounting slider 32, one end of the constant force elastic element 31 passes through the clamping groove 321 to achieve initial installation of the constant force elastic element 31 and the mounting slider 32. After initial installation, the connecting hole 311 of the constant force elastic element 31 and the mounting hole 322 of the mounting slider 32 are aligned. The locking element 34 is inserted into the connecting hole 311 and the mounting hole 322 and locked, thus floatingly connecting the constant force elastic element 31 to the mounting slider 32. The groove walls on opposite sides of the clamping groove 321 are brought closer together to clamp one end of the constant force elastic element 31, preventing the constant force elastic element 31 from coming out of the clamping groove 321.

[0052] Optionally, the locking element 34 can be a screw, which threadedly engages with the connecting hole 311 and the mounting hole 322. Optionally, the shape and size of the clamping groove 321 match the end of the constant force elastic element 31 to ensure that the constant force elastic element 31 can be stably embedded therein, reducing shaking and displacement during installation and use.

[0053] In actual implementation, the clamping groove 321 is provided at the end of the mounting slider 32 away from the connecting member 33, so as to facilitate the connection of the constant force elastic member 31.

[0054] Optionally, the mounting slider 32 is further provided with a clamping hole and a locking hole connected to the clamping hole. One end of the connector 33 passes through the clamping hole, and the screw passes through the locking hole to connect the connector 33 and the mounting slider 32; wherein the screw is threadedly engaged with the locking hole.

[0055] In embodiments of this utility model, such as Figure 1 and Figure 5As shown, the mounting bracket 1 includes a frame 11 and a fixed pulley 12. The frame 11 is provided with a first slide rail 13 and a second slide rail 14. The first slide rail 13 and the second slide rail 14 are arranged in parallel. At least part of the load slider 2 is slidably disposed on the first slide rail 13, and at least part of the mounting slider 32 is disposed on the second slide rail 14. The fixed pulley 12 is rotatably connected to the frame 11. The fixed pulley 12 is disposed at one end of the first slide rail 13 and the second slide rail 14, and the connecting member 33 is wound around the fixed pulley 12.

[0056] Specifically, compared to the load slider 2 and mounting slider 32 being located in the same slide rail, the load slider 2 and mounting slider 32 are respectively located in the first slide rail 13 and the second slide rail 14. This allows the mounting slider 32 to have sufficient travel while also reducing the height of the mounting bracket 1. The connecting piece 33 bypasses the fixed pulley 12, changes its extension direction, and connects to the load slider 2 located in the first slide rail 13 and the mounting slider 32 located in the second slide rail 14, respectively.

[0057] In actual implementation, the first slide rail 13 and the second slide rail 14 are separated by a partition. The partition has a notch, and a fixed pulley 12 is located within the notch and can rotate freely. The connecting member 33 extends from the first slide rail 13, around the fixed pulley 12, into the second slide rail 14 to connect the mounting slider 32 and the load slider 2. The fixed pulley 12 changes the direction of force transmission and reduces wear on the connecting member 33 during transmission. In this embodiment, the partition is part of the frame 11, which is integrally formed. The first slide rail 13 and the second slide rail 14 are both located on the frame 11. Besides providing sliding space for the mounting slider 32 and the load slider 2, the frame 11 also functions as a column in the laser engraving machine, resulting in a small overall size and high space utilization.

[0058] Optionally, the openings of the first slide rail 13 and the second slide rail 14 are respectively located on different sides of the frame 11. The opening of the second slide rail 14 can avoid the connection structure between the mounting slider 32 and the connector 33 or the constant force elastic member 31. The opening of the first slide rail 13 can avoid the connection structure between the load slider 2 and the protective cover. The load slider 2 can extend out of the first slide rail 13 through the opening of the first slide rail 13 to connect with the protective cover outside the first slide rail 13. Alternatively, part of the protective cover can extend into the first slide rail 13 through the opening of the first slide rail 13 to connect with the load slider 2 inside the first slide rail 13.

[0059] Optionally, the first slide rail 13 and the second slide rail 14 are arranged along the extension direction of the frame 11, that is, along the lifting direction of the protective cover.

[0060] Understandably, in this embodiment, the first slide rail 13 and the second slide rail 14 are arranged in a groove shape, with one end of the first slide rail 13 and the second slide rail 14 at least penetrating the frame 11, so that the load slider 2 and the mounting slider 32 can be installed into the first slide rail 13 and the second slide rail 14. After the load slider 2 and the mounting slider 32 are installed, the penetrating ends of the first slide rail 13 and the second slide rail 14 can be blocked by a stop block. This facilitates the modular assembly and disassembly of the load slider 2 and the mounting slider 32.

[0061] In other embodiments, the first slide rail 13 and the second slide rail 14 may also be in other forms, such as linear guide rails. Correspondingly, the pulleys provided on the load slider 2 and the mounting slider 32 may be provided with grooves, which are not specifically limited here.

[0062] In embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 6 As shown, the load slider 2 is provided with at least a first roller 23 and a second roller 24. The first roller 23 and the second roller 24 are slidably disposed on the first slide rail 13, and the rotation axes of the first roller 23 and the second roller 24 are set at an angle.

[0063] In this embodiment, the load slider 2 is slidably disposed within the first slide rail 13 via the first roller 23 and the second roller 24 to reduce the moving resistance of the load slider 2 and improve the smoothness of its movement along the first slide rail 13. The rotation axes of the first roller 23 and the second roller 24 are in different directions and are set at an angle. Thus, when the load slider 2 moves within the first slide rail 13, it is supported by at least two angled supports to balance the overturning moment caused by the center offset during the movement of the protective cover, ensuring that the load slider 2 can smoothly drive the protective cover to move.

[0064] In actual implementation, the first slide rail 13 has a bottom wall and a side wall, the first roller 23 slides against the bottom wall, the second roller 24 slides against the side wall, and the angle between the rotation axis of the first roller 23 and the rotation axis of the second roller 24 is consistent with the angle formed by the bottom wall and the side wall.

[0065] Understandably, the first roller 23 and the second roller 24 are rotatably connected to the load slider 2 by engaging with the mounting shaft hole on the load slider 2, and the extension direction of the mounting shaft is the direction of the rotation axis of the first roller 23 or the second roller 24.

[0066] Optionally, the extension direction of the first slide rail 13 is the first direction, and the rotation axes of the first roller 23 and the second roller 24 are the second and third directions, respectively, with the first, second, and third directions arranged at an angle to each other. Optionally, the first, second, and third directions are arranged perpendicular to each other.

[0067] In actual implementation, the mounting slider 32 is slidably mounted within the second slide rail 14 via a third pulley to ensure smooth movement of the mounting slider 32 along the second slide rail 14. Optionally, the mounting slider 32 can also be mounted within the second slide rail 14 via third and fourth pulleys with different rotation axes to further improve the stability of the movement of the mounting slider 32.

[0068] In embodiments of this utility model, such as Figure 1 and Figure 6 As shown, the load slider 2 includes a sliding part 21 and a connecting part 22 connected to each other. The sliding part 21 is disposed on the first slide rail 13, and the connecting part 22 extends out of the first slide rail 13. The first roller 23 and the second roller 24 each include multiple sets. At least two sets of first rollers 23 are respectively disposed on the first side 211 and the third side 213 opposite to the sliding part 21. At least two sets of second rollers 24 are respectively disposed on the second side 212 and the fourth side 214 opposite to the sliding part 21.

[0069] In this embodiment, the sliding part 21 is the part of the load slider 2 that is limited to the first slide rail 13. The sliding part 21 is slidably disposed in the first slide rail 13 through the first roller 23 and the second roller 24. The connecting part 22 is connected to one side of the sliding part 21 and extends into the first slide rail 13 through the opening of the first slide rail 13 to connect with the protective cover outside the first slide rail 13.

[0070] Specifically, in the projection along the sliding direction, the sliding part 21 is roughly rectangular. The four sides of the projection of the sliding part 21 correspond to the first side 211, the second side 212, the third side 213, and the fourth side 214 of the sliding part 21. The first side 211 and the third side 213 of the sliding part 21 each have at least one set of first rollers 23, and the third side 213 and the fourth side 214 each have at least one set of second rollers 24. Thus, each side of the sliding part 21 is provided with rollers, providing sufficient support and ensuring the stability of the sliding part 21 during sliding. The number of first rollers 23 in each set can be one, two, three, etc., and the number of second rollers 24 in each set can be one, two, three, etc., depending on actual needs. When the number of rollers in each set is greater than one, the multiple rollers are evenly spaced.

[0071] Optionally, the connecting portion 22 is located on the third side 213 of the sliding portion 21. Correspondingly, the opening of the first slide rail 13 is located on the third side 213 of the sliding portion 21, and the connecting portion 22 extends out of the first slide rail 13 through the opening. When the sliding portion 21 slides along the first slide rail 13, the connecting portion 22 slides along the opening. The connecting portion 22 is clearance-fitted with the edge of the opening to limit the connecting portion 22 and prevent it from shifting during sliding. Optionally, the connecting portion 22 is centrally located on the third side 213 of the sliding portion 21, so that second rollers 24 can also be provided on both sides of the connecting portion 22.

[0072] In actual implementation, the connecting part 22 is provided with through holes, which not only reduces its own weight, but also provides an installation structure for the protective cover.

[0073] In embodiments of this utility model, such as Figure 1 and Figure 5 As shown, the first slide rail 13 includes a first side wall 131, a second side wall 132, a third side wall 133, and a fourth side wall 134 connected in sequence. The first side wall 131 and the third side wall 133 are arranged opposite to each other, and the second side wall 132 and the fourth side wall 134 are arranged opposite to each other. The circumferential surface of the first roller 23 abuts against the second side wall 132 and the fourth side wall 134, and the end face of the first roller 23 abuts against the first side wall 131 or the third side wall 133. The circumferential surface of the second roller 24 abuts against the first side wall 131 and the third side wall 133, and the end face of the second roller 24 abuts against the second side wall 132 or the fourth side wall 134.

[0074] In this embodiment, the circumferential surface of the first roller 23 abuts against the second sidewall 132 and the fourth sidewall 134, so as to achieve radial limiting while also being able to roll on the second sidewall 132 and the fourth sidewall 134. When the first roller 23 is located on the side of the load slider 2 close to the first sidewall 131, the end face of the first roller 23 away from the load slider 2 abuts against the first sidewall 131. When the first roller 23 is located on the side of the load slider 2 close to the third sidewall 133, the end face of the first roller 23 away from the load slider 2 abuts against the third sidewall 133, so as to achieve axial limiting of the first roller 23 and prevent the first roller 23 from deviating during rotation.

[0075] Similarly, the circumferential surface of the second roller 24 abuts against the first sidewall 131 and the third sidewall 133, so as to achieve radial limiting while also being able to roll on the first sidewall 131 and the third sidewall 133. When the second roller 24 is located on the side of the load slider 2 near the second sidewall 132, the end face of the second roller 24 away from the load slider 2 abuts against the second sidewall 132. When the second roller 24 is located on the side of the load slider 2 near the fourth sidewall 134, the end face of the second roller 24 away from the load slider 2 abuts against the fourth sidewall 134, so as to achieve axial limiting of the second roller 24 and prevent the second roller 24 from deviating during rotation.

[0076] Optionally, the abutting fit in this embodiment can be a clearance fit to reduce the possibility of jamming during the sliding of the load slider 2.

[0077] Optionally, the first roller 23 in this embodiment can be not only a single roller, but also a roller group consisting of multiple rollers arranged on the same side.

[0078] Optionally, the first side 211, the second side 212, the third side 213, and the fourth side 214 of the connecting portion 22 correspond to the first sidewall 131, the second sidewall 132, the third sidewall 133, and the fourth sidewall 134 of the first slide rail 13, respectively. The circumferential surfaces of the first rollers 23 provided on the first side 211 and the third side 213 abut against the second sidewall 132 and the fourth sidewall 134, and the end faces of the first rollers 23 provided on the first side 211 and the third side 213 abut against the first sidewall 131 and the third sidewall 133, respectively. The circumferential surfaces of the second rollers 24 provided on the second side 212 and the fourth side 214 abut against the first sidewall 131 and the third sidewall 133, and the end faces of the second rollers 24 provided on the second side 212 and the fourth side 214 abut against the second sidewall 132 and the fourth sidewall 134, respectively.

[0079] Optionally, the first sidewall 131 and the third sidewall 133 are arranged in parallel, and the second sidewall 132 and the fourth sidewall 134 are arranged in parallel.

[0080] In actual implementation, an opening is provided on the third side wall 133 of the first slide rail 13 so that the load slider 2 can extend into the first slide rail 13 and connect with the protective cover.

[0081] In embodiments of this utility model, such as Figure 1 , Figures 2 to 4 As shown, the constant force assembly 3 also includes a guide roller 35, which is located between the constant force elastic member 31 and the mounting slider 32. One end of the constant force elastic member 31 passes around one side of the guide roller 35 and is connected to the mounting slider 32.

[0082] In practical implementation, the guide roller 35 can be mounted on the mounting bracket 1 or on other components of the laser engraving machine. When the mounting slider 32 causes the constant force elastic element 31 to stretch or contract, the constant force elastic element 31 moves along the guide roller 35. The guide roller 35 ensures that the direction of the force exerted by the constant force elastic element 31 on the mounting slider 32 is consistent with the sliding direction of the mounting slider 32, preventing the mounting slider 32 from getting stuck during movement. The guide roller 35 is rotatably mounted to reduce the moving resistance of the constant force elastic element 31 and reduce wear on the constant force elastic element 31.

[0083] Specifically, the constant force elastic element 31 is arranged in a coil shape, with one outer end connected to the mounting slider 32. The movement of the mounting slider 32 will cause the constant force elastic element 31 to automatically unwind or rewind. Understandably, even if the extension direction of the protruding part of the constant force elastic element 31 connected to the mounting slider 32 is consistent with the sliding direction of the mounting slider 32 in the initial state, the diameter of the constant force elastic element 31 will change as it is unwinded or rewinded. Inevitably, the extension direction of the protruding part of the constant force elastic element 31 will change. After a guide roller 35 is set between the constant force elastic element 31 and the mounting slider 32, the guide roller 35 will change the extension direction of the protruding part of the constant force elastic element 31, that is, change the direction of the elastic force of the constant force elastic element 31. The extension direction of the protruding part of the constant force elastic element 31 located between the guide roller 35 and the mounting slider 32 will always be consistent with the sliding direction of the mounting slider 32, so as to improve the stability of the mounting slider 32 when sliding, and thus ensure the stability of the movement of the protective cover.

[0084] Optionally, the guide roller 35 includes a rotating shaft and a sleeve. The rotating shaft is fixedly installed, and the sleeve is sleeved on the rotating shaft and can rotate freely along the rotating shaft to reduce the resistance of the constant force elastic element 31 moving around the guide roller 35. The two ends of the sleeve can be limited by springs.

[0085] This utility model also proposes a laser engraving machine, which includes a follow-up hovering mechanism 100 and a protective cover. The specific structure of the follow-up hovering mechanism 100 is as described in the above embodiments. Since this laser engraving machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0086] In the laser engraving machine, the protective cover is connected to the load slider 2. The follow-up suspension mechanism 100 can be set up individually or in pairs, without specific limitations.

[0087] Optionally, when the follow-up hovering mechanism 100 includes multiple sets, the mounting bracket 1 and the load slider 2 each include multiple sets. The load slider 2 is set one-to-one with the mounting bracket 1. Each load slider 2 is connected to the protective cover. Multiple load sliders 2 are connected to the same constant force component 3 and are balanced by the same constant force component 3, so as to reduce the complexity and cost of setting up the follow-up hovering mechanism 100.

[0088] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A follow-up hovering mechanism, characterized in that, The follow-up hovering mechanism includes: Mounting bracket; A load slider, wherein the load slider is slidably disposed on the mounting bracket; and A constant force component, at least a portion of which is disposed on the mounting bracket, is connected to the load slider, and is used to provide a constant force to the load slider; The constant force assembly includes a constant force elastic element, a mounting slider, a connector, and a guide roller; the mounting slider is slidably disposed on the mounting bracket, and one end of the constant force elastic element is connected to the mounting slider; one end of the connector is connected to the mounting slider, and the other end of the connector is connected to the load slider; the guide roller is disposed between the constant force elastic element and the mounting slider, and one end of the constant force elastic element passes around one side of the guide roller and is connected to the mounting slider.

2. The follow-up hovering mechanism as described in claim 1, characterized in that, The mounting slider is provided with a clamping groove, and one end of the constant force elastic element passes through the clamping groove; The mounting slider is provided with a mounting hole that communicates with the pressing groove, the constant force elastic element is provided with a connecting hole, and the constant force assembly further includes a locking element, which passes through the mounting hole and the connecting hole to press the constant force elastic element.

3. The follow-up hovering mechanism as described in claim 1, characterized in that, The mounting bracket includes: The frame includes a first slide rail and a second slide rail, which are arranged parallel to each other. At least a portion of the load slider is slidably disposed on the first slide rail, and at least a portion of the mounting slider is disposed on the second slide rail. A fixed pulley is rotatably connected to the frame. The fixed pulley is located at one end of the first slide rail and the second slide rail, and the connecting member is wound around the fixed pulley.

4. The follow-up hovering mechanism as described in claim 3, characterized in that, The load slider is provided with at least a first roller and a second roller, the first roller and the second roller are slidably disposed on the first slide rail, and the rotation axes of the first roller and the second roller are set at an angle.

5. The follow-up hovering mechanism as described in claim 4, characterized in that, The load slider includes a sliding part and a connecting part connected to each other. The sliding part is disposed on the first slide rail, and the connecting part extends out of the first slide rail. Both the first roller and the second roller include multiple sets, with at least two sets of the first rollers respectively located on a first side and a third side opposite to the sliding portion; and at least two sets of the second rollers respectively located on a second side and a fourth side opposite to the sliding portion.

6. The follow-up hovering mechanism as described in claim 4, characterized in that, The first slide rail includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected in sequence. The first sidewall and the third sidewall are arranged opposite to each other, and the second sidewall and the fourth sidewall are arranged opposite to each other. The circumferential surface of the first roller abuts against the second sidewall and the fourth sidewall, and the end face of the first roller abuts against the first sidewall or the third sidewall. The circumferential surface of the second roller abuts against the first sidewall and the third sidewall, and the end face of the second roller abuts against the second sidewall or the fourth sidewall.

7. A laser engraving machine, characterized in that, The laser engraving machine includes a protective cover and a follow-up suspension mechanism as described in any one of claims 1 to 6, wherein the protective cover is connected to the load slider.

8. The laser engraving machine as described in claim 7, characterized in that, Both the mounting bracket and the load slider include multiple components, and the load slider is arranged in a one-to-one correspondence with the mounting bracket. Multiple load sliders are connected to the same constant force component.

Images