Light beam focusing knob device of laser cutting plotter

Abstract

The utility model relates to the technical field of laser cutting plotter focusing, and discloses a laser cutting plotter light beam focusing knob device which comprises a cutting plotter galvanometer, the outer wall of the cutting plotter galvanometer is sleeved with a focusing lens barrel, a focusing lens is fixed to the position, close to the front side, in the focusing lens barrel, and a knob adjusting assembly is arranged on the outer wall of the cutting plotter galvanometer. The knob adjusting assembly comprises a fixing ring fixed to the middle position of the outer wall of the character carving machine galvanometer. The adjusting knob is arranged to abut against the pressing ring to press the damping ring, so that the damping ring is slightly extruded by the fixing ring and the pressing ring, the damping ring and the threaded sleeve are restrained by damping, and the situation that focus adjustment is affected due to focal length deviation caused by accidental touch of the damping ring and the threaded sleeve during adjustment is prevented; and after adjustment, the damping ring is further pressed by the fixing ring and the pressing ring so as to be fixed and locked, focal length change caused by vibration or external force is avoided, and the reliability of the device is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of laser engraving machine focusing technology, and in particular to a laser engraving machine beam focusing knob device. Background Technology

[0002] Laser engraving machines are widely used in various precision machining fields. They use the high energy density of a laser beam to engrave or cut on the surface of materials. When processing materials of different thicknesses, the focusing lens of the laser engraving machine needs to be adjusted to adjust the laser focal length.

[0003] The existing focus adjustment device (publication number: CN207873387U) has at least the following drawbacks: the device does not have a reliable rotation damping mechanism, which causes the knob to shift the focus due to accidental contact during the adjustment process, affecting the focus adjustment. Furthermore, the knob cannot be locked after adjustment, and the focus can easily change due to vibration or external force, affecting the reliability of the device. Therefore, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a laser engraving machine beam focusing knob device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A laser engraving machine beam focusing knob device includes an engraving machine galvanometer. A focusing lens barrel is sleeved on the outer wall of the engraving machine galvanometer. A focusing lens is fixed inside the focusing lens barrel near the front side. A knob adjustment assembly is provided on the outer wall of the engraving machine galvanometer. The knob adjustment assembly includes a fixing ring fixed at the middle position of the outer wall of the engraving machine galvanometer. A damping ring is movably sleeved on the outer wall of the engraving machine galvanometer behind the fixing ring. A pressure ring is movably sleeved on the outer wall of the engraving machine galvanometer behind the damping ring. A clamping knob is threadedly connected to the rear side of the pressure ring on the outer wall of the engraving machine galvanometer. A threaded sleeve is fixed on the outer wall of the pressure ring. An adjustment knob is fixed on the outer wall of the threaded sleeve. The focusing lens barrel is threadedly connected to the inside of the threaded sleeve.

[0007] As a further embodiment of this utility model, four first limiting rods are fixed on the outer wall of the engraving machine galvanometer and in front of the fixing ring, and a first sliding groove is provided on the inner wall of the focusing lens tube. The first sliding groove and the first limiting rod are slidably arranged inside the first limiting rod. Four second limiting rods are fixed on the outer wall of the engraving machine galvanometer and in front of the damping ring, and four second limiting grooves are provided on the inner wall of the pressure ring. The second limiting rod and the second limiting groove are slidably arranged inside the second limiting groove.

[0008] As a further embodiment of this utility model, the outer wall of the pressure ring is provided with scale lines, and the outer wall of the damping ring is fixed with a finger block, the tip of the finger block pointing towards the scale line.

[0009] As a further embodiment of this utility model, a first rubber ring is fixed to the side of the fixing ring near the damping ring, and a second rubber ring is fixed to the side of the pressure ring near the damping ring.

[0010] As a further embodiment of this utility model, both the adjusting knob and the pressing knob have anti-slip grooves on their outer walls.

[0011] As a further embodiment of this invention, a positioning groove is provided on the outer wall of the focusing lens tube.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The damping ring is pressed against the pressure ring by the adjustment knob, which in turn is slightly squeezed by the fixing ring and the pressure ring. The damping ring and the threaded sleeve are subjected to damping constraint, preventing the damping ring and the threaded sleeve from being accidentally touched during adjustment, which could cause focal length shift and affect the focus adjustment. After adjustment, the fixing ring and the pressure ring further press the damping ring to fix and lock it, preventing focal length changes due to vibration or external force, and effectively ensuring the reliability of the device. At the same time, the first limit rod and the second limit rod are set to limit the focusing lens barrel and the pressure ring, preventing the focusing lens barrel and the pressure ring from rotating during adjustment, and ensuring adjustment accuracy. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a laser engraving machine beam focusing knob device proposed in this utility model;

[0015] Figure 2 This is a three-dimensional disassembled structural diagram of a laser engraving machine beam focusing knob device proposed in this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the fixing ring of the laser engraving machine beam focusing knob device proposed in this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the pressure ring of the laser engraving machine beam focusing knob device proposed in this utility model.

[0018] In the diagram: 1. Engraving machine galvanometer; 101. Focusing lens barrel; 102. Focusing lens; 2. Fixing ring; 201. Damping ring; 202. Pressure ring; 203. Pressing knob; 204. Threaded sleeve; 205. Adjusting knob; 206. First limiting rod; 207. First sliding groove; 208. Second limiting rod; 209. Second limiting groove; 3. Scale line; 301. Finger block; 4. First rubber ring; 401. Second rubber ring; 5. Anti-slip groove; 6. Positioning groove. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0022] like Figures 1-4 As shown, a laser engraving machine beam focusing knob device includes an engraving machine galvanometer 1. A focusing lens barrel 101 is sleeved on the outer wall of the engraving machine galvanometer 1. A focusing lens 102 is fixed inside the focusing lens barrel 101 near the front side. A knob adjustment assembly is provided on the outer wall of the engraving machine galvanometer 1. The knob adjustment assembly includes a fixing ring 2 fixed at the middle position of the outer wall of the engraving machine galvanometer 1. A damping ring 201 is movably sleeved on the outer wall of the engraving machine galvanometer 1 and located behind the fixing ring 2. A pressure ring 202 is movably sleeved on the outer wall of the engraving machine galvanometer 1 and located behind the damping ring 201. A clamping knob 203 is threadedly connected to the rear side of the pressure ring 202 on the outer wall of the engraving machine galvanometer 1. A threaded sleeve 204 is fixed on the outer wall of the pressure ring 202. An adjustment knob 205 is fixed on the outer wall of the threaded sleeve 204. The focusing lens barrel 101 and the threaded sleeve 204 are internally threadedly connected.

[0023] like Figures 2-4As shown, in this embodiment, four first limiting rods 206 are fixed to the outer wall of the engraving machine galvanometer 1 and to the front of the fixing ring 2. A first sliding groove 207 is formed on the inner wall of the focusing lens barrel 101, and the first sliding groove 207 slides within the first limiting rods 206. Four second limiting rods 208 are fixed to the outer wall of the engraving machine galvanometer 1 and to the rear of the damping ring 201. Four second limiting grooves 209 are formed on the inner wall of the pressure ring 202. The second limiting rods 208... The damping ring 201 is pressed against the pressure ring 202 by rotating the clamping knob 203, which is connected to the outer wall of the engraving machine galvanometer 1 by the threaded connection between the clamping knob 203 and the pressure ring 202. During this process, the second limiting rod 208 slides inside the second limiting groove 209 to limit the pressure ring 202. Subsequently, the damping ring 201 is slightly squeezed by the fixing ring 2 and the pressure ring 202. The threaded sleeve 204 is damped to prevent accidental contact between the damping ring 201 and the threaded sleeve 204 during adjustment, which could cause focal length shift and affect focus adjustment. Then, the focusing lens barrel 101 is placed at the front end of the engraving machine galvanometer 1, and then placed inside the threaded sleeve 204. During this process, rotating the adjustment knob 205 drives the threaded sleeve 204 to rotate, so that the focusing lens barrel 101 and the threaded sleeve 204 are threadedly connected and fitted into the engraving machine galvanometer 1. At the same time, the second limiting rod 208 and the first sliding groove 207 slide inside to limit the focusing lens barrel 101, controlling the focusing lens barrel 101 to move linearly on the engraving machine galvanometer 1, thereby achieving focus adjustment. Then, the adjustment knob 205 is rotated again to press the damping ring 201 tightly against the pressure ring 202, further pressing the damping ring 201 to achieve fixation and locking, avoiding focal length changes due to vibration or external force, and effectively ensuring the reliability of the device.

[0024] like Figures 2-4 As shown, in this embodiment, the outer wall of the pressure ring 202 is provided with a scale line 3, and the outer wall of the damping ring 201 is fixed with a finger block 301. The tip of the finger block 301 points to the scale line 3. By determining the position of the finger block 301 pointing to the scale line 3, the adjustment knob 205 can be rotated to more accurately adjust the focus of the device.

[0025] like Figures 2-4 As shown, in this embodiment, a first rubber ring 4 is fixed to the side of the fixed ring 2 near the damping ring 201, and a second rubber ring 401 is fixed to the side of the pressure ring 202 near the damping ring 201. By setting the first rubber ring 4 and the second rubber ring 401 to replace the fixed ring 2 and the pressure ring 202 in contacting the damping ring 201, a greater frictional force can be generated under the same contact force, thereby increasing the rotational damping effect on the damping ring 201.

[0026] like Figures 2-4As shown in this embodiment, both the adjustment knob 205 and the clamping knob 203 have anti-slip grooves 5 on their outer walls. The anti-slip grooves 5 make it easier for workers to rotate the adjustment knob 205 and the clamping knob 203.

[0027] like Figures 2-4 As shown in this embodiment, the outer wall of the focusing lens barrel 101 is provided with a positioning groove 6. By setting the positioning groove 6, the focusing lens barrel 101 can be aligned during installation, thus avoiding misalignment that could affect subsequent focusing adjustments.

[0028] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, by rotating the clamping knob 203, under the action of the clamping knob 203 and the threaded connection of the outer wall of the engraving machine galvanometer 1, the adjusting knob 205 abuts against the pressure ring 202 to clamp the damping ring 201. During this process, the second limiting rod 208 slides inside the second limiting groove 209 to limit the pressure ring 202. Subsequently, the damping ring 201 is slightly squeezed by the fixing ring 2 and the pressure ring 202, and the damping ring 201 and the threaded sleeve 204 are subjected to damping constraint to prevent the damping ring 201 and the threaded sleeve 204 from being accidentally touched during adjustment, which would cause focal length shift and affect the focusing adjustment. Then, the focusing lens barrel 101 is placed at the front end of the engraving machine galvanometer 1, and the positioning groove 6 is ensured to be upward. The focusing lens barrel 101 is then placed inside the threaded sleeve 204. During this process, rotating the adjusting knob 205 causes the threaded sleeve 204 to rotate, so that the focusing lens barrel 101 is threadedly connected to the threaded sleeve 204 and fits into the inside of the engraving machine galvanometer 1. At the same time, the second limiting rod 208 slides inside the first sliding groove 207 to limit the focusing lens barrel 101. At this time, the position of the finger block 301 pointing to the scale line 3 is determined by rotating the adjusting knob 205 to control the focusing lens barrel 101 to move linearly on the engraving machine galvanometer 1, thereby realizing the focus adjustment. Then, the adjusting knob 205 is rotated to press the damping ring 201 tightly against the pressure ring 202, and the damping ring 201 is further pressed to achieve fixation and locking, so as to avoid the focal length change due to vibration or external force, and effectively ensure the reliability of the device.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A laser engraving machine beam focusing knob device, comprising an engraving machine galvanometer (1), characterized in that, The outer wall of the engraving machine galvanometer (1) is fitted with a focusing lens tube (101). A focusing lens (102) is fixed inside the focusing lens tube (101) near the front side. The outer wall of the engraving machine galvanometer (1) is provided with a knob adjustment assembly. The knob adjustment assembly includes a fixing ring (2) fixed at the middle position of the outer wall of the engraving machine galvanometer (1). A damping ring (201) is movably fitted on the outer wall of the engraving machine galvanometer (1) and behind the fixing ring (2). A pressure ring (202) is movably fitted on the outer wall of the engraving machine galvanometer (1) behind the damping ring (201). A pressing knob (203) is threadedly connected to the rear side of the pressure ring (202) of the outer wall of the engraving machine galvanometer (1). A threaded sleeve (204) is fixed on the outer wall of the pressure ring (202). An adjustment knob (205) is fixed on the outer wall of the threaded sleeve (204). The focusing lens tube (101) is threadedly connected to the inside of the threaded sleeve (204).

2. The laser engraving machine beam focusing knob device according to claim 1, characterized in that, Four first limiting rods (206) are fixed on the outer wall of the engraving machine galvanometer (1) and in front of the fixing ring (2). A first sliding groove (207) is provided on the inner wall of the focusing lens tube (101). The first sliding groove (207) and the first limiting rod (206) are slidably arranged inside the first limiting rod (206). Four second limiting rods (208) are fixed on the outer wall of the engraving machine galvanometer (1) and in front of the damping ring (201). Four second limiting grooves (209) are provided on the inner wall of the pressure ring (202). The second limiting rods (208) and the second limiting grooves (209) are slidably arranged inside the second limiting rods (208).

3. The laser engraving machine beam focusing knob device according to claim 2, characterized in that, The outer wall of the pressure ring (202) is provided with scale lines (3), and the outer wall of the damping ring (201) is fixed with finger blocks (301), the tip of the finger blocks (301) pointing to the scale lines (3).

4. The laser engraving machine beam focusing knob device according to claim 3, characterized in that, The fixing ring (2) has a first rubber ring (4) fixed on the side near the damping ring (201), and the pressure ring (202) has a second rubber ring (401) fixed on the side near the damping ring (201).

5. The laser engraving machine beam focusing knob device according to claim 4, characterized in that, The outer walls of both the adjustment knob (205) and the clamping knob (203) are provided with anti-slip grooves (5).

6. The laser engraving machine beam focusing knob device according to claim 5, characterized in that, The outer wall of the focusing lens tube (101) is provided with a positioning groove (6).

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