Anti-locking guide mechanism for laser engraving machine

Abstract

The utility model discloses an anti-jamming guide mechanism for a laser engraving machine, which comprises two linear guide rails, each linear guide rail comprises an anti-jamming screw rod and an internal thread cylinder, a plurality of rotating heads in the anti-jamming screw rod are connected with internal spiral groove holes in the internal thread cylinders in an embedded manner, and the anti-jamming screw rod further comprises a round rod. The plurality of rotating heads are spirally wound and mounted on the periphery of the round rod, are coaxially and rotatably mounted in the radial direction of the round rod through screws, and are elastically and telescopically mounted on the periphery of the screws through elastic gaskets; according to the anti-jamming guide mechanism for the laser engraving machine, a traditional screw rod is replaced with the anti-jamming screw rod, a plurality of rotating heads connected in a rotating and telescopic mode in the anti-jamming screw rod replace external threads fixedly arranged in the traditional screw rod, and the rotating heads can move in a rotating mode and a telescopic mode; therefore, the anti-blocking screw rod and the internal thread cylinder in the linear guide rail can be prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of laser engraving machines, in particular to an anti-jamming guide mechanism for laser engraving machines. Background Art

[0002] Laser engraving machine is an advanced equipment that uses laser to engrave the materials to be engraved. It can improve the efficiency of engraving, make the surface of the engraved part smooth and round, quickly reduce the temperature of the engraved non-metallic material, and reduce the deformation and internal stress of the engraved object. As we all know, laser engraving machine generally controls the forward and reverse rotation of the high-speed stepper motor output shaft on the X-axis linear guide or Y-axis linear guide through the driver, driving the laser light source in the laser engraving machine to move on the X-axis or Y-axis for engraving.

[0003] From the above, it can be seen that the linear guide is an important component for guiding the movement of the laser light source. The linear guide in the existing laser engraving machine is generally driven by the output shaft of a high-speed stepper motor to drive the threaded connection seat to move along a straight line, that is, the connection seat moves smoothly along the screw, which is the basis for the precise movement of the laser light source; however, when special situations such as small foreign objects are stuck between the connection seat and the screw, the connection seat and the screw are overheated and expanded and deformed, the connection seat and the screw are corroded and adhered, the screw in the linear guide is very likely to get stuck; in view of this, this paper proposes an anti-stuck guide mechanism for a laser engraving machine. Utility Model Content

[0004] The utility model aims to solve the problem that the linear guide rail of the laser engraving machine in the prior art may be stuck, and proposes an anti-stuck guide mechanism for the laser engraving machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-stuck guide mechanism for a laser engraving machine comprises two linear guide rails, wherein the linear guide rails comprise an anti-stuck screw and an internal threaded barrel, wherein a plurality of rotating heads in the anti-stuck screw and an internal spiral groove in the internal threaded barrel are engaged and connected;

[0007] The anti-stuck screw also includes a round rod, and a plurality of rotating heads are spirally wound and installed on the periphery of the round rod. The rotating heads are coaxially rotated and installed on the radial direction of the round rod through screws, and the rotating heads are elastically telescopically installed on the periphery of the screws through elastic gaskets.

[0008] Preferably, a marking thread corresponding to the inner spiral groove hole is arranged on the outer surface of the round rod, and a plurality of screw holes are equidistantly arranged on the outer periphery of the round rod along the marking thread, and the screws are threadedly connected to the screw holes.

[0009] Preferably, the linear guide rail also includes a base plate, and the two ends of the round rod are mounted on the base plate through two side plates for parallel rotation. A guide rod parallel to the round rod is provided between the two side plates, and the internal threaded tube is slidably mounted on the guide rod through a connecting seat.

[0010] Preferably, the connecting seat and the guide rod are movably connected, a positioning rod is vertically arranged on the periphery of the internal threaded tube, a slot corresponding to the positioning rod is arranged on one side of the connecting seat, and the top end of the positioning rod is arranged in the slot.

[0011] Preferably, a cylindrical groove is coaxially arranged in the rotating head, one end of the cylindrical groove in the rotating head is connected to a rotating hole 1, the elastic gasket is provided with a rotating hole 2 which is interconnected with the rotating hole 1, and the screw passes through the rotating hole 1 and the rotating hole 2 in sequence.

[0012] Preferably, a high-speed stepper motor is fixedly mounted on the base plate, and the output shaft of the high-speed stepper motor is coaxially fixedly connected to a round rod through a coupling.

[0013] Compared with the prior art, the utility model provides an anti-jamming guide mechanism for a laser engraving machine, which has the following beneficial effects:

[0014] The laser engraving machine uses an anti-stuck guide mechanism, which replaces the traditional screw with an anti-stuck screw. Several rotating and telescopically connected rotating heads in the anti-stuck screw replace the external threads fixed in the traditional screw. The rotating and telescopically connected rotating heads can not only rotate along the coaxially arranged screws, but also radially telescope along the round rod in the anti-stuck screw, that is, the rotating head arranged on the spherical surface of the anti-stuck screw can only move by spiral sliding compared to the traditional fixed external threads, while the rotating head can also move by rotating and telescoping, thereby preventing the anti-stuck screw and the internal thread barrel in the linear guide from being stuck, and the anti-stuck screw replaces the spiral sliding friction between the traditional screw and the internal thread barrel with rolling friction with less friction by rotating the rotating head, that is, the friction between the anti-stuck screw and the internal thread barrel is smaller, the internal thread barrel moves more smoothly and is not easy to be stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an anti-jamming guide mechanism for a laser engraving machine proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a linear guide rail in an anti-jamming guide mechanism for a laser engraving machine proposed by the utility model;

[0017] Figure 3 This is a structural schematic diagram of an anti-stuck screw in an anti-stuck guide mechanism for a laser engraving machine proposed by the utility model;

[0018] Figure 4 A cross-sectional view of an anti-stuck screw in an anti-stuck guide mechanism for a laser engraving machine proposed by the utility model;

[0019] Figure 5 The utility model is a schematic structural diagram of an internal threaded barrel in an anti-jamming guide mechanism for a laser engraving machine.

[0020] In the figure: 1. Engraving machine housing; 2. Linear guide rail; 21. Bottom plate; 22. High-speed stepping motor; 23. Anti-stuck screw; 231. Round rod; 232. Marking thread; 233. Turning head; 234. Elastic gasket; 235. Cylindrical groove; 236. Screw; 237. Screw hole; 238. Turning hole 1; 24. Guide rod; 25. Side plate; 26. Connecting seat; 27. Internal threaded cylinder; 28. Internal spiral groove hole; 29. ​​Positioning rod; 3. Engraving laser; 4. Rectangular plate; 5. Mounting cylinder; 6. T-shaped screw rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Reference Figure 1-5 A laser engraving machine anti-jamming guide mechanism includes an engraving housing 1 and an engraving laser 3. The engraving laser 3 is installed on the engraving housing 1 through two overlapping vertically staggered linear guide rails 2. The two linear guide rails 2 are respectively used to drive the engraving laser 3 to move on the X-axis and Y-axis on the same horizontal plane. A battery is fixedly installed in the engraving housing 1, and the battery is connected to the high-speed stepping motors 22 in the two linear guide rails 2 through wires.

[0024] In this embodiment, the linear guide 2 includes a base plate 21, a high-speed stepper motor 22, an anti-stuck screw 23, a guide rod 24, a connecting seat 26 and an internal threaded tube 27. The base plate 21 in the lower linear guide 2 is fixedly connected to the inner cavity of the engraving machine housing 1, the upper base plate 21 is fixedly installed on the connecting seat 26 in the lower linear guide 2 by bolts, the high-speed stepper motor 22 is fixedly installed on the base plate 21, and the output shaft of the high-speed stepper motor 22 is coaxially fixedly connected with the round rod 231 in the anti-stuck screw 23 through a coupling. The anti-stuck screw 23 and the guide rod 24 are respectively rotated parallel to the base plate 21 through two side plates 25, and the lower ends of the two side plates 25 are respectively vertically fixedly installed on the two ends of the base plate 21;

[0025] The round rod 231 in the anti-stuck screw 23 and the two ends of the guide rod 24 are rotatably connected to the side plate 25 respectively, an internal spiral groove 28 is provided in the internal threaded tube 27, and a positioning rod 29 is vertically fixedly installed on the periphery of the internal threaded tube 27. The internal spiral groove 28 in the internal threaded tube 27 is spirally arranged on the periphery of the round rod 231. One side of the connecting seat 26 is movably installed on the periphery of the guide rod 24. The connecting seat 26 can slide and rotate along the guide rod 24. The other end of the connecting seat 26 is provided with a corresponding groove that is engaged with the positioning rod 29. When the groove on the connecting seat 26 is engaged and stuck into the round rod 231 on the internal threaded tube 27, the connecting seat 26 is fixed to the round rod 231 by bolts, so that the connecting seat 26 and the internal threaded tube 27 can be fixedly connected.

[0026] In this embodiment, the anti-stuck screw 23 also includes a plurality of rotating heads 233, the ends of the rotating heads 233 are engaged with the inner cavity of the inner spiral groove 28, and the outer periphery of the round rod 231 is provided with a marking thread 232 corresponding to the inner spiral groove 28 in the inner threaded barrel 27, and the outer periphery of the round rod 231 is provided with a plurality of screw holes 237 equidistantly along the marking thread 232, such as Figure 4 , a plurality of screw holes 237 are evenly divided into four parts with the central axis of the round rod 231, a plurality of rotating heads 233 are respectively installed in the plurality of screw holes 237 on the round rod 231 by spirally winding screws 236, and the rotating heads 233 are coaxially arranged in the radial direction of the round rod 231;

[0027] The rotating head 233, the round rod 231 and the internal threaded tube 27 are all made of stainless steel. An elastic gasket 234 is fitted on the bottom surface of the rotating head 233 near the outer surface of the round rod 231. The elastic gasket 234 is made of highly elastic rubber. The bottom surface of the elastic gasket 234 is fitted with the outer surface of the round rod 231. A cylindrical groove 235 is coaxially arranged in the rotating head 233. A rotating hole 238 is arranged at one end of the cylindrical groove 235. A rotating hole 238 is arranged on the elastic gasket 234. Second, the end of the screw 236 rotates through the first rotating hole 238 and the second rotating hole in turn, and is tightened in the screw hole 237. When the rotating head 233 is installed on the screw hole 237 of the round rod 231 through the screw 236, the rotating hole 238 of the rotating head 233 is coaxially rotated and installed on the screw 236. After the internal threaded barrel 27 is installed on the periphery of the anti-stuck screw 23, the inner circle of the internal threaded barrel 27 always has more than five rotating heads 233, which is mainly used to ensure that the internal threaded barrel 27 can be stably arranged on the periphery of the anti-stuck screw 23.

[0028] It can be seen that the present application mainly replaces the external threads fixed in the traditional screw rod with a plurality of rotating heads 233. The replaced rotating heads 233 can not only rotate about the central axis of the screw 236, but also elastically compress the elastic gasket 234 along the screw 236, and the end of the rotating head 233 protrudes outward in a spherical shape.

[0029] In this embodiment, a rectangular plate 4 is fixedly installed on the upper surface of the connecting seat 26 in the linear guide rail 2, and a mounting tube 5 is fixedly installed on the rectangular plate 4. The lower end of the engraving laser 3 can be inserted into the mounting tube 5, and a T-shaped screw rod 6 is vertically threadedly connected to one side of the mounting tube 5. After the engraving laser 3 is inserted into the mounting tube 5, the end of the T-shaped screw rod 6 is squeezed and tightened on the periphery of the engraving laser 3 in the mounting tube 5, so that the engraving laser 3 can be fixedly installed on the rectangular plate 4.

[0030] In the utility model, after the high-speed stepper motor 22 in the lower linear guide 2 is connected to the circuit, the output shaft of the high-speed stepper motor 22 can drive the anti-stuck screw 23 to rotate forward or reverse, thereby driving the lower connecting seat 26 and the connected linear guide 2 to move horizontally along the X-axis, thereby driving the engraving laser 3 on the upper linear guide 2 to move horizontally along the X-axis. When the high-speed stepper motor 22 in the upper linear guide 2 is connected to the circuit, the output shaft of the upper high-speed stepper motor 22 can drive the anti-stuck screw 23 to rotate forward or reverse, thereby driving the rectangular plate 4 and the connected engraving laser 3 to move horizontally along the Y-axis.

[0031] The anti-stuck screw 23 replaces the external threads fixed in the conventional screw by a plurality of rotating heads 233, thereby changing the spiral sliding friction between the internal thread barrel 27 and the external threads fixed in the conventional screw into rolling friction between the internal thread barrel 27 and a plurality of rotating heads 233, thereby reducing the friction force required for the movement of the internal thread barrel 27, that is, the friction force between the anti-stuck screw 23 and the internal thread barrel 27 is smaller, the internal thread barrel 27 moves more smoothly and is not easily stuck, and the rotating head 233 can also elastically compress the elastic gasket 234 along the screw 236, that is, the rotating head 233 can be extended and retracted along the radial direction of the round rod 231;

[0032] When a small foreign object is stuck in the internal spiral groove 28 of the internal threaded barrel 27 and cannot be moved, or the internal threaded barrel 27 and the rotating head 233 are overheated and expanded and deformed, the size of the small foreign object is smaller than the elastic deformation size of the elastic gasket 234, and the rotating head 233 arranged in a spherical surface can avoid the small foreign object or the deformed part by rotating and telescoping, thus achieving the prevention of the screw 23 from being stuck in the internal threaded barrel 27 caused by the foreign object or the overheated deformed part;

[0033] When rust and adhesion occur between the rotating head 233 and the inner spiral groove hole 28, the rotating rotating head 233, compared with the continuous traditional fixed external thread, not only has a smaller rust area, but is also easier to destroy the rust and adhesion. Moreover, the rotating head 233 can destroy the rust and adhesion by rotating and telescoping on the basis of spiral sliding. There are more ways to destroy rust and adhesion, which can effectively prevent the anti-stuck screw 23 from being stuck.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-jamming guide mechanism for a laser engraving machine, comprising two linear guide rails (2), characterized in that: The linear guide rail (2) comprises an anti-stuck screw (23) and an internal threaded barrel (27), and a plurality of rotating heads (233) in the anti-stuck screw (23) and an internal spiral groove hole (28) in the internal threaded barrel (27) are engaged and connected; The anti-stuck screw rod (23) further comprises a round rod (231), a plurality of rotating heads (233) are spirally wound and installed on the periphery of the round rod (231), the rotating heads (233) are coaxially rotatably installed on the radial direction of the round rod (231) via screws (236), and the rotating heads (233) are elastically telescopically installed on the periphery of the screws (236) via elastic gaskets (234).

2. The anti-jamming guide mechanism for a laser engraving machine according to claim 1, characterized in that: The outer surface of the round rod (231) is provided with a marking thread (232) corresponding to the inner spiral groove hole (28), and the outer periphery of the round rod (231) is provided with a plurality of screw holes (237) equidistantly along the marking thread (232), and the screws (236) and the screw holes (237) are threadedly connected.

3. The anti-jamming guide mechanism for a laser engraving machine according to claim 1, characterized in that: The linear guide rail (2) also includes a base plate (21), and the two ends of the round rod (231) are mounted on the base plate (21) through two side plates (25) for parallel rotation. A guide rod (24) parallel to the round rod (231) is provided between the two side plates (25), and the internal threaded cylinder (27) is slidably mounted on the guide rod (24) through a connecting seat (26).

4. The anti-jamming guide mechanism for a laser engraving machine according to claim 3, characterized in that: The connecting seat (26) and the guide rod (24) are movably connected, a positioning rod (29) is vertically arranged on the periphery of the internal threaded tube (27), and a slot corresponding to the positioning rod (29) is arranged on one side of the connecting seat (26), and the top end of the positioning rod (29) is arranged in the slot.

5. The anti-jamming guide mechanism for a laser engraving machine according to claim 1, characterized in that: A cylindrical groove (235) is coaxially arranged in the rotating head (233); one end of the cylindrical groove (235) in the rotating head (233) is connected to a rotating hole 1 (238); a rotating hole 2 is arranged on the elastic gasket (234) and is connected to the rotating hole 1 (238); and the screw (236) passes through the rotating hole 1 (238) and the rotating hole 2 in sequence.

6. The anti-jamming guide mechanism for a laser engraving machine according to claim 3, characterized in that: A high-speed stepping motor (22) is fixedly mounted on the base plate (21), and an output shaft of the high-speed stepping motor (22) is coaxially fixedly connected to a round rod (231) via a coupling.

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