Laser engraving machine for signboard

Abstract

The invention belongs to the technical field of laser processing, and particularly relates to a laser engraving machine for signboards. A pair of supporting columns is connected to the top face of the workbench in a sliding mode. The sides, close to each other, of the two supporting columns are slidably connected with laser emitters, and the laser emitters are controlled by threaded rods in the supporting columns to ascend and descend. A first sliding plate and a second sliding plate are installed at the position, between the two supporting columns, of the top face of the workbench, signboards can be kept perpendicular and stacked together through limiting of the first limiting plate and the second limiting plate, after the signboard at the top is engraved, an ejector rod and a push plate can eject the signboards which are not engraved upwards, and therefore the signboards are not engraved. According to the signboard engraving device, the two laser emitters are arranged, and in the process that the engraved signboard is ejected out, the signboard to be engraved is ejected to the position between the two laser emitters, so that continuous engraving of the signboard is achieved, the situation that clamping is continuously and repeatedly released and re-clamped like a traditional clamp is not needed, and then the batch processing efficiency of the signboard is improved.

Description

Technical Field

[0001] This invention belongs to the field of laser processing technology, specifically a laser engraving machine for signage. Background Technology

[0002] Signage is a visual tool used to convey specific information. Through elements such as graphics, symbols, colors, and text, it plays a key role in guidance, management, warning, or decoration. It is widely used in transportation, commerce, culture and tourism, campuses, medical care, and municipal fields. In order to make the markings on the surface of the sign permanent, wear-resistant, corrosion-resistant, and not faded due to environmental factors, the markings on the surface need to be engraved by a laser engraving machine.

[0003] In actual production, some signs need to be engraved on both sides, but a conventional laser engraving machine can only engrave on one side at a time. Therefore, a dual-head laser engraving machine is often used to engrave on both sides simultaneously. A dual-head laser engraving machine mainly includes a laser system, a galvanometer system, a control system, a mechanical transmission system, a cooling system, and an auxiliary system. It uses a pair of laser systems and galvanometer systems to laser engrave the sign located between them, thereby achieving synchronous engraving on both sides of the sign.

[0004] When engraving signs using the dual-head laser engraving technology described above, the sign to be engraved needs to be fixed between two laser emitters using a clamp before the laser engraving operation can be performed. However, when engraving signs in batches, the signs need to be changed frequently, and the clamps in the existing technology cannot meet the requirements for rapid sign replacement.

[0005] Therefore, the present invention provides a laser engraving machine for signage. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A laser engraving machine for signage, comprising a worktable; a pair of support columns are slidably connected to the top surface of the worktable; laser emitters are slidably connected to the sides of the two support columns that are close to each other, and the laser emitters are controlled to rise and fall by internal threaded rods of the support columns; a sliding plate 1 and a sliding plate 2 are installed on the top surface of the worktable between the two support columns; a pair of limiting plates 1 are installed on the top surface of the sliding plate 1; a pair of limiting plates 2 are installed on the top surface of the sliding plate 2; a top rod is slidably connected to the top surface of the worktable between the two sliding plates; a push plate is fixedly connected to the top surface of the top rod; both sliding plates 1 and 2 have clearance grooves on their top surfaces, and the clearance grooves are adapted to the push plate; a gear 1 is rotatably connected inside the worktable; the gear 1 is driven by a servo motor, and the gear 1 meshes with the top rod.

[0008] Preferably, the first limiting plate has a slot on the side near the second limiting plate; a magnet is inserted into the slot, and the first limiting plate is made of magnetizable metal; a stop bar is rotatably connected to the side of the limiting plate away from the bottom of the slot; and through holes are opened on the surface of the second limiting plate at the corresponding positions of the slot, and the through holes are adapted to the stop bars.

[0009] Preferably, the first limiting plate and the second limiting plate are slidably connected to the first sliding plate and the second sliding plate, respectively; the top surface of the workbench is rotatably connected to the second gear between the two sliding plates, and the push rod is slidably connected to the second gear; both sides of the second gear are meshed with toothed plates, and the toothed plates are slidably connected to the surface of the workbench; the two toothed plates are fixedly connected to the first sliding plate and the second sliding plate, respectively; a double-threaded screw is provided on the side of the first limiting plate away from the second limiting plate; the double-threaded screw is rotatably connected to the top surface of the first sliding plate; the two ends of the double-threaded screw are threadedly connected to the two first limiting plates, respectively.

[0010] Preferably, a rotating groove is formed on the top surface of the workbench at the position corresponding to the second gear; a push rod is threadedly connected to the side of the workbench away from the support column; a sleeve is provided in the rotating groove; the sleeve is fixedly connected to the bottom surface of the second gear, and the push rod is located inside the sleeve; a pair of arc-shaped plates are provided in the rotating groove; one of the arc-shaped plates is rotatably connected to the push rod, while the other arc-shaped plate is fixedly connected to the inner wall of the rotating groove.

[0011] Preferably, a support rod is slidably connected to the top surface of the worktable, and the support rod is driven by a servo motor; a sliding sleeve is slidably connected to the surface of the support rod, and the sliding sleeve and the support rod are fixed by a stop screw; side rods are fixedly connected to both sides of the sliding sleeve, and the push plate is located between the two side rods.

[0012] Preferably, the slide plate away from the support column has a base plate fixedly connected to its side away from the support column; baffles are fixedly connected to both ends of the base plate; a slide rod is slidably connected to the surface of the baffle away from the limiting plate; a spring is fixedly connected between the slide rod and the baffle; a pressure plate is fixedly connected to the end of the slide rod near the limiting plate; an electric push rod is installed on the top surface of the workbench, and the electric push rod is located on the side of the base plate away from the slide plate.

[0013] Preferably, each of the two baffles is rotatably connected to a connecting rod on the side away from each other; the surfaces of the two connecting rods are threaded with limit cylinders; a side plate is fixedly connected between the two limit cylinders; and the electric push rod is slidably connected to the worktable.

[0014] Preferably, a plurality of evenly arranged mounting grooves are provided on the side of the baffle and pressure plate that are close to each other near the limiting plate; a plurality of evenly arranged rollers are rotatably connected in the mounting grooves.

[0015] Preferably, a drive rod is rotatably connected to the top surface of the second limiting plate away from the support column, and the drive rod is driven by a drive assembly; a torsion spring is installed at the rotatable connection between the drive rod and the support plate; a rotating plate is fixedly connected to the surface of the drive rod; a guide rail is magnetically attached to the side of the second limiting plate near the support column; a telescopic frame is installed at the bottom of the guide rail; the telescopic frame rests on the top surface of the workbench and is used to control the lifting and lowering of the guide rail; a drive plate is slidably connected to the top of the telescopic frame, and the drive plate is driven by a servo motor; a vacuum suction cup is fixedly connected to the bottom of the drive plate near the end of the second limiting plate.

[0016] Preferably, the drive assembly includes a transmission rod; the transmission rod is slidably connected to the drive rod and fixed by a stop screw; the transmission rod can be engaged with the drive rod.

[0017] The beneficial effects of this invention are as follows: 1. The laser engraving machine for signs described in this invention, through the limiting plates one and two, enables the signs to remain vertical and stacked together. After the top sign is engraved, the top rod and push plate will push the un-engraved sign upwards. In the process of pushing out the engraved sign, the sign to be engraved is pushed between the two laser emitters, thereby realizing continuous engraving of the signs without the need for repeated unclamping and reclamping as with traditional clamps, thus improving the batch processing efficiency of signs.

[0018] 2. The laser engraving machine for signage described in this invention adjusts the distance between limiting plate one and limiting plate two, as well as between the pair of limiting plates one and limiting plate two, through gear two, toothed plate and double-toothed screw, so that limiting plate one and limiting plate two can adapt to signs of different lengths and thicknesses, thereby improving the applicability of the embodiments of this invention. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the structure of gear one in this invention; Figure 3 This is a schematic diagram of the structure of the limiting plate one in this invention; Figure 4 This is a schematic diagram of the structure of the stop bar in this invention; Figure 5 This is a schematic diagram of the push plate structure in this invention; Figure 6 This is a schematic diagram of the structure of the base plate in this invention; Figure 7 This is a schematic diagram of the baffle structure in this invention; Figure 8 This is a schematic diagram of the telescopic frame in this invention; Figure 9 This is a schematic diagram of the arc-shaped plate in this invention; Figure 10 This is a schematic diagram of the support rod structure in this invention; In the diagram: 1. Workbench; 2. Support column; 3. Laser emitter; 4. Slide plate one; 5. Slide plate two; 6. Limiting plate one; 7. Limiting plate two; 8. Push rod; 9. Push plate; 10. Clearance groove; 11. Gear one; 12. Slot; 13. Magnet block; 14. Stop bar; 15. Through hole; 17. Gear two; 18. Gear plate; 19. Double-threaded screw; 20. Rotating groove; 21. Push rod; 22. Sleeve; 23. 24. Arc plate; 25. Support rod; 26. Sliding sleeve; 27. Side rod; 28. Base plate; 29. ​​Baffle; 30. Sliding rod; 31. Spring; 32. Pressure plate; 33. Electric actuator; 34. Connecting rod; 35. Limiting cylinder; 36. Side plate; 37. Mounting groove; 38. Roller; 39. Drive rod; 40. Rotating plate; 41. Guide rail; 42. Telescopic frame; 43. Drive plate; 44. Vacuum suction cup; 45. Transmission rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 3As shown in the embodiment of the present invention, a laser engraving machine for signage includes a worktable 1; a pair of support columns 2 are slidably connected to the top surface of the worktable 1; laser emitters 3 are slidably connected to the sides of the two support columns 2 that are close to each other, and the laser emitters 3 are controlled to rise and fall by the internal threaded rods of the support columns 2; a sliding plate 4 and a sliding plate 5 are installed on the top surface of the worktable 1 between the two support columns 2; a pair of limiting plates 6 are installed on the top surface of the sliding plate 4; a pair of limiting plates 7 are installed on the top surface of the sliding plate 5; and a top rod is slidably connected to the top surface of the worktable 1 between the two sliding plates. 8; A push plate 9 is fixedly connected to the top surface of the push rod 8; The top surfaces of the sliding plate 1 4 and the sliding plate 2 5 are both provided with relief grooves 10, and the relief grooves 10 are adapted to the push plate 9; Gear 11 is rotatably connected inside the worktable 1; Gear 11 is driven by a servo motor, and gear 11 is meshed with the push rod 8; During operation, in order to facilitate double-sided batch laser engraving of signs, the embodiment of the present invention can be used. First, the user needs to place the sign to be welded between the pair of limiting plates 1 6 and limiting plates 2 7, and then move the support column 2 to adjust the focus of the laser generator so that it... Aligning with the top sign, laser emitter 3 is activated to laser engrave the sign. Once engraving is complete, gear 11 rotates under the drive of a servo motor, causing push rod 8 to rise and push the engraved sign out between the paired limiting plates 6 and 7. The user then removes the ejected sign. As push rod 8 pushes push plate 9 to eject the engraved sign, the unengraved sign at the bottom of the engraved sign also rises between the two laser emitters 3, allowing for the engraving of the next sign. This process is repeated continuously. During the engraving process, all the signs between the first limiting plate 6 and the second limiting plate 7 can be engraved. The limiting plates 6 and 7 keep the signs vertical and stacked together. After the top sign is engraved, the top rod 8 and the push plate 9 will push the un-engraved signs upward. In the process of pushing out the engraved signs, the signs to be engraved will be pushed between the two laser emitters 3, thus realizing continuous engraving of signs. Unlike traditional clamps, there is no need to repeatedly release and re-clamp, thereby improving the batch processing efficiency of signs.

[0023] like Figures 3 to 4As shown, a slot 12 is provided on the side of the first limiting plate 6 near the second limiting plate 7; a magnet 13 is inserted into the slot 12, and the first limiting plate 6 is made of magnetizable metal; a stop bar 14 is rotatably connected to the side of the limiting plate away from the bottom of the slot 12; through holes 15 are provided on the surface of the second limiting plate 7 at the corresponding positions of the slot 12, and the through holes 15 are adapted to the stop bar 14; during operation, when the sign is placed between the pair of first limiting plates 6 and second limiting plates, both ends of the sign will be restricted by the stop bar 14, so that the central printing area of ​​the sign is located between the pair of first limiting plates 6 and second limiting plates 7, avoiding the laser engraving accuracy from being affected by the offset of the sign. At the same time, the stop bar 14 is attracted to the slot 12 by the magnet 13, which also makes it convenient for the user to disassemble and replace it, thereby reducing the maintenance difficulty of this embodiment of the invention.

[0024] like Figure 3 As shown, the first limiting plate 6 and the second limiting plate 7 are slidably connected to the first sliding plate 4 and the second sliding plate 5, respectively; the top surface of the workbench 1 is rotatably connected to the second gear 17 between the two sliding plates, and the push rod 8 is slidably connected to the second gear 17; both sides of the second gear 17 are meshed with toothed plates 18, and the toothed plates 18 are slidably connected to the surface of the workbench 1; the two toothed plates 18 are fixedly connected to the first sliding plate 4 and the second sliding plate 5, respectively; a double-threaded screw 19 is provided on the side of the first limiting plate 6 away from the second limiting plate 7; the double-threaded screw 19 is rotatably connected to the top surface of the first sliding plate 4; the two ends of the double-threaded screw 19 are threadedly connected to the two limiting plates 6, respectively; during operation, when the user needs to adjust the distance between the first limiting plate 6 and the second limiting plate 7, the user can slide the first sliding plate 4, while the first sliding plate 4 and the second sliding plate 5 are slidably connected to the second limiting plate 5. 5 is connected by a toothed plate 18 and a gear. When the first slide plate 4 moves, the second slide plate 5 can also move synchronously. This allows the first slide plate 4 and the second slide plate 5 to move synchronously towards or away from each other by driving the first limit plate 6 and the second limit plate 7. This allows for adjustment of the distance between the first limit plate 6 and the second limit plate 7, thus adapting to signs of different thicknesses. When the user adjusts the distance between the first limit plate 6 and the second limit plate 7, the user only needs to turn the double-threaded screw 19. The double-threaded screw 19 will drive the two limit plates 6 to move closer or further apart. The stop bar 14 on the surface of the first limit plate 6 is inserted into the through hole 15 on the surface of the second limit plate 7. Therefore, the second limit plate 7 will also move with the movement of the first limit plate 6, thus adapting to signs of different lengths. This improves the applicability of the embodiments of the present invention.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 9As shown, a rotating groove 20 is provided on the top surface of the workbench 1 at the position corresponding to gear 2 17; a push rod 21 is threadedly connected to the side of the workbench 1 away from the support column 2; a sleeve 22 is provided inside the rotating groove 20; the sleeve 22 is fixedly connected to the bottom surface of gear 2 17, and the push rod 8 is located inside the sleeve; a pair of arc-shaped plates 23 are provided inside the rotating groove 20; one of the arc-shaped plates 23 is rotatably connected to the push rod 21, while the other arc-shaped plate 23 is fixedly connected to the inner wall of the rotating groove 20; during operation, after the user adjusts the limit plate 1 6 After the distance between the limiting plate 2 and 7 is cleared, the user needs to turn the push rod 21. The push rod 21 will drive the arc plate 23 to move closer to the sleeve 22 and cooperate with another arc plate 23 in the rotating groove 20 to clamp the sleeve. Since the sleeve is fixedly connected to the gear 2 17, the gear 2 17 will also be fixed. This will fix the position of the slide plate 1 4 and the slide plate 2 5, thus preventing them from sliding accidentally. This would cause the sign between the limiting plate 1 6 and the limiting plate 2 7 to tilt, which would affect the laser engraving of the sign.

[0026] like Figure 1 , Figure 2 and Figure 10 As shown, a support rod 24 is slidably connected to the top surface of the workbench 1, and the support rod 24 is driven by a servo motor; a sliding sleeve 25 is slidably connected to the surface of the support rod 24, and the sliding sleeve 25 is fixed to the support rod 24 by a stop screw; side rods 26 are fixedly connected to both sides of the sliding sleeve 25, and the push plate 9 is located between the two side rods 26; during operation, in order to facilitate the continuous feeding of the sign, the user can remove the magnet block 13 and the stop rod 14 located at the bottom near the support rod. At this time, whenever the push rod 8 and the push plate 9 push upwards to engrave the sign, After the sign is placed, the servo motor drives the support rod 24 to move towards the limiting plate 6, thereby moving the side rod 26 to the bottom surface of the sign. Then, the top rod 8 drives the push plate 9 to descend. At this time, the sign at the top is positioned to allow space between the push plates 9 for the height of the sign. Then, the user can insert the sign to be welded into the top surface of the push plate 9 from the side where the stop rod 14 has been removed, thereby completing the loading of the sign and expanding the capacity between the limiting plate 6 and the second limiting plate, so that it can accommodate a larger batch of sign engravings.

[0027] like Figure 1 and Figure 6As shown, the sliding plate 4, which is away from the support column 2, has a base plate 27 fixedly connected to its side away from the support column 2; baffles 28 are fixedly connected to both ends of the base plate 27; a sliding rod 29 is slidably connected to the surface of the baffle 28, which is away from the limiting plate 6; a spring 30 is fixedly connected between the sliding rod 29 and the baffle 28; a pressure plate 31 is fixedly connected to the end of the sliding rod 29 near the limiting plate 6; an electric actuator 32 is installed on the top surface of the worktable 1, and the electric actuator 32 is located on the side of the base plate 27 away from the sliding plate 4; during operation, to facilitate the user's engraving of the target... For automatic label loading, the user can place the label to be loaded between the baffle 28 and the pressure plate 31, and press the label between the baffle 28 and the pressure plate 31 with the slide rod 29 and the spring 30. Then, whenever the bottom of the first limiting plate 6 and the second limiting plate 7 leaves space for loading, the electric push rod 32 will fix the label between the baffle 28 and the pressure plate 31, so that the label can be inserted between the first limiting plate 6 and the second limiting plate 7, thereby completing the automatic loading of the label, reducing the user's operating difficulty and improving the ease of use of this embodiment.

[0028] like Figure 6 As shown, each of the two baffles 28 is rotatably connected to a connecting rod 33 on the side away from each other; the surfaces of the two connecting rods 33 are threadedly connected to a limiting cylinder 34; a side plate 35 is fixedly connected between the two limiting cylinders 34; the electric actuator 32 is slidably connected to the worktable 1; during operation, when it is necessary to engrave different length signs, the user can screw the connecting rod 33 onto the limiting cylinder 34, so that the limiting cylinder 34 drives the side plate 35 to move closer to or away from the base plate 27, thereby adapting to signs of different lengths and improving the applicability of this embodiment of the invention.

[0029] like Figures 6 to 7 As shown, a plurality of evenly arranged mounting grooves 36 are provided on the side of the baffle 28 and the pressure plate 31 that are close to each other near the limiting plate 6; a plurality of evenly arranged rollers 37 are rotatably connected in the mounting grooves 36; during operation, when the electric push rod 32 pushes the sign, the rollers 37 in the mounting grooves 36 on the surface of the baffle 28 and the pressure plate 31 can reduce the friction when the sign is pushed, thereby avoiding obstruction of the sign and reducing the wear of the sign during the feeding process, thus ensuring the final engraving quality.

[0030] like Figure 1 , Figure 2 and Figure 8As shown, a drive rod 38 is rotatably connected to the top surface of the limiting plate 7 away from the support column 2, and the drive rod 38 is driven by a drive assembly; a torsion spring is installed at the rotatable connection between the drive rod 38 and the support plate; a rotating plate 39 is fixedly connected to the surface of the drive rod 38; a guide rail 40 is magnetically attracted to the side of the limiting plate 7 near the support column 2; a telescopic frame 41 is installed at the bottom of the guide rail 40; the telescopic frame 41 rests on the top surface of the workbench 1 and is used to control the lifting and lowering of the guide rail 40; a drive plate 42 is slidably connected to the top of the telescopic frame 41, and the drive plate 42 is driven by a servo motor; the drive plate 4... A vacuum suction cup 43 is fixedly connected to the bottom of one end of the limiting plate 2 7. During operation, the user first needs to remove the stop bar 14 located at the top. After the engraved sign at the top is pushed out, the drive rod 38 rotates under the drive of the drive assembly and pushes the sign at the top towards the guide rail 40. Then the vacuum suction cup 43 at the end of the drive plate 42 will attract the extended part of the sign. Then the drive plate 42 will move away from the limiting plate 1 6, thereby pulling out the sign completely and dropping it onto the surface of the guide rail 40, and sliding it to one side of the worktable 1, so that the user can collect it.

[0031] like Figure 2 and Figure 8 As shown, the driving assembly includes a transmission rod 44; the transmission rod 44 is slidably connected to the driving rod 38 and fixed by a stop screw; the transmission rod 44 can be engaged with the driving rod 38; during operation, when the driving plate 42 moves towards the limiting plate 6, the driving plate 42 will engage with the transmission rod 44 and drive the rotating plate 39 to rotate, thereby pushing the signboard. Thus, no additional power source is required, thereby reducing the cost of this embodiment of the invention.

[0032] To facilitate double-sided batch laser engraving of signs during operation, this embodiment of the invention can be used. First, the user places the sign to be welded between the pair of limiting plates 6 and 7. Then, the support column 2 is moved to adjust the focus of the laser generator, aligning it with the sign at the top. Subsequently, the laser emitter 3 is activated and laser engraves the sign at the top. After engraving is complete, gear 11 rotates under the drive of the servo motor, thereby raising the push rod 8 and ejecting the engraved sign from between the pair of limiting plates 6 and 7. The user then removes the ejected sign. When the push rod 8 drives the push plate 9 to eject the engraved sign, the bottom of the engraved sign... Unengraved signs will rise between the two laser emitters 3, allowing the next sign to be engraved. This engraving process is repeated until all signs between the first and second limiting plates are engraved. The limiting plates 6 and 7 keep the signs vertical and stacked. After the top sign is engraved, the push rod 8 and push plate 9 will push the unengraved signs upwards. During the process of pushing out the engraved signs, the signs to be engraved will be pushed between the two laser emitters 3, thus achieving continuous engraving of signs without the need for repeated clamping and re-clamping as with traditional fixtures, thereby improving the batch processing efficiency of signs.

[0033] When the sign is placed between the pair of limiting plates 6 and 7, both ends of the sign are restricted by the stop bar 14, so that the central printing area of ​​the sign is located between the pair of limiting plates 6 and 7. This avoids the laser engraving accuracy being affected by the offset of the sign. At the same time, the stop bar 14 is attracted to the slot 12 by the magnet 13, which also makes it convenient for the user to disassemble and replace it, thereby reducing the maintenance difficulty of this embodiment of the invention.

[0034] When the user needs to adjust the distance between the first limiting plate 6 and the second limiting plate 7, the user can slide the first sliding plate 4. The first sliding plate 4 and the second sliding plate 5 are connected together by the toothed plate 18 and gears. When the first sliding plate 4 is moved, the second sliding plate 5 can also move synchronously. This allows the first sliding plate 4 and the second sliding plate 5 to drive the first limiting plate 6 and the second limiting plate 7 to move synchronously towards or away from each other, thereby adjusting the distance between the first limiting plate 6 and the second limiting plate 7 to accommodate signs of different thicknesses. When the user adjusts the distance between the first limiting plate 6 and the second limiting plate 7, the user only needs to turn the double-threaded screw 19. The double-threaded screw 19 will drive the two first limiting plates 6 to move closer or further apart. The stop bar 14 on the surface of the first limiting plate 6 is inserted into the through hole 15 on the surface of the second limiting plate 7, so the second limiting plate 7 will also move with the movement of the first limiting plate 6, thereby accommodating signs of different lengths and thus improving the applicability of the embodiments of the present invention.

[0035] After the user adjusts the distance between the first limiting plate 6 and the second limiting plate 7, the user needs to turn the push rod 21. The push rod 21 drives the arc plate 23 to move closer to the sleeve 22 and cooperate with another arc plate 23 in the rotating groove 20, thereby clamping the sleeve. Since the sleeve is fixedly connected to the second gear 17, the second gear 17 will also be fixed, thus fixing the position of the first sliding plate 4 and the second sliding plate 5, thereby preventing them from accidentally sliding and causing the sign between the first limiting plate 6 and the second limiting plate 7 to tilt, which in turn affects the laser engraving of the sign.

[0036] To facilitate continuous loading of signs, the user can remove the magnet 13 and stop bar 14 located at the bottom near the support rod. At this time, whenever the top rod 8 and push plate 9 push the engraved sign upwards, the servo motor will drive the support rod 24 to move towards the limit plate 6, thereby moving the side rod 26 to the bottom surface of the sign. Then, the top rod 8 drives the push plate 9 to descend. At this time, the sign located at the top can leave a space of sign height between the push plate 9. Then, the user can insert the sign to be welded into the top surface of the push plate 9 from the side where the stop bar 14 has been removed, thereby completing the loading of the sign and expanding the capacity between the limit plate 6 and the limit plate 2, so that it can accommodate a larger batch of sign engravings.

[0037] To facilitate the user's loading of the engraved sign, the user can place the sign between the baffle 28 and the pressure plate 31, and press the sign between the baffle 28 and the pressure plate 31 with the slide rod 29 and the spring 30. Then, whenever the bottom of the first limiting plate 6 and the second limiting plate 7 leaves space for loading, the electric push rod 32 will fix the sign between the baffle 28 and the pressure plate 31, so that the sign can be inserted between the first limiting plate 6 and the second limiting plate 7, thereby completing the automatic loading of the sign, reducing the user's operating difficulty and improving the ease of use of this embodiment.

[0038] When different length signs need to be engraved, the user can screw the connecting rod 33 into the upper limit cylinder 34, so that the limit cylinder 34 moves the side plate 35 closer to or away from the base plate 27, thereby adapting to signs of different lengths and improving the applicability of the present invention.

[0039] When the electric actuator 32 pushes the sign, the rollers 37 are provided in the mounting grooves 36 on the surfaces of the baffle 28 and the pressure plate 31, which reduces the friction when the sign is pushed, thereby preventing the sign from being obstructed and reducing the wear of the sign during the feeding process, thus ensuring the final engraving quality.

[0040] First, the user needs to remove the top stop bar 14. Then, after the engraved sign at the top is pushed out, the drive rod 38 rotates under the drive assembly and pushes the top sign towards the guide rail 40. Then, the vacuum suction cup 43 at the end of the drive plate 42 will attract the extended part of the sign. Then, the drive plate 42 will move away from the limit plate 6, thereby pulling out the sign completely and letting it fall onto the surface of the guide rail 40 and slide down to one side of the workbench 1, making it convenient for the user to collect.

[0041] When the drive plate 42 moves toward the limiting plate 6, it engages with the transmission rod 44, causing the rotating plate 39 to rotate and thus pushing the sign. This eliminates the need for an additional power source, thereby reducing the cost of this embodiment of the invention.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser engraving machine for signage, characterized in that: The system includes a worktable; a pair of support columns are slidably connected to the top surface of the worktable; laser emitters are slidably connected to the sides of the two support columns that are close to each other, and the laser emitters are controlled to rise and fall by internal threaded rods of the support columns; a sliding plate 1 and a sliding plate 2 are installed on the top surface of the worktable between the two support columns; a pair of limiting plates 1 are installed on the top surface of the sliding plate 1; a pair of limiting plates 2 are installed on the top surface of the sliding plate 2; a push rod is slidably connected to the top surface of the worktable between the two sliding plates; a push plate is fixedly connected to the top surface of the push rod; both sliding plates 1 and 2 have clearance grooves on their top surfaces, and the clearance grooves are adapted to the push plates; a gear 1 is rotatably connected inside the worktable; the gear 1 is driven by a servo motor, and the gear 1 meshes with the push rod.

2. The laser engraving machine for signage according to claim 1, characterized in that: A slot is provided on the side of the first limiting plate near the second limiting plate; a magnet is inserted into the slot, and the first limiting plate is made of magnetizable metal; a stop bar is rotatably connected to the side of the limiting plate away from the bottom of the slot; through holes are provided on the surface of the second limiting plate at the corresponding positions of the slot, and the through holes are adapted to the stop bars.

3. A laser engraving machine for signage according to claim 2, characterized in that: The first limiting plate and the second limiting plate are slidably connected to the first sliding plate and the second sliding plate, respectively; the top surface of the workbench is rotatably connected to the second gear between the two sliding plates, and the push rod is slidably connected to the second gear; both sides of the second gear are meshed with toothed plates, and the toothed plates are slidably connected to the surface of the workbench; the two toothed plates are fixedly connected to the first sliding plate and the second sliding plate, respectively; a double-threaded screw is provided on the side of the first limiting plate away from the second limiting plate; the double-threaded screw is rotatably connected to the top surface of the first sliding plate; the two ends of the double-threaded screw are threadedly connected to the two first limiting plates, respectively.

4. A laser engraving machine for signage according to claim 3, characterized in that: The top surface of the workbench has a rotating groove at the position corresponding to gear two; a push rod is threadedly connected to the side of the workbench away from the support column; a sleeve is provided in the rotating groove; the sleeve is fixedly connected to the bottom surface of gear two, and the push rod is located inside the sleeve; a pair of arc-shaped plates are provided in the rotating groove; one of the arc-shaped plates is rotatably connected to the push rod, while the other arc-shaped plate is fixedly connected to the inner wall of the rotating groove.

5. A laser engraving machine for signage according to claim 1, characterized in that: The top surface of the worktable is slidably connected to a support rod, which is driven by a servo motor; the surface of the support rod is slidably connected to a sliding sleeve, which is fixed to the support rod by a stop screw; both sides of the sliding sleeve are fixedly connected to side rods, and the push plate is located between the two side rods.

6. A laser engraving machine for signage according to claim 5, characterized in that: A base plate is fixedly connected to the side of the slide plate away from the support column; baffles are fixedly connected to both ends of the base plate; a slide rod is slidably connected to the surface of the baffle away from the limiting plate; a spring is fixedly connected between the slide rod and the baffle; a pressure plate is fixedly connected to the end of the slide rod near the limiting plate; an electric push rod is installed on the top surface of the workbench, and the electric push rod is located on the side of the base plate away from the slide plate.

7. A laser engraving machine for signage according to claim 6, characterized in that: Each of the two baffles is rotatably connected to a connecting rod on the side away from each other; the surfaces of the two connecting rods are threaded with limit cylinders; a side plate is fixedly connected between the two limit cylinders; and the electric push rod is slidably connected to the worktable.

8. A laser engraving machine for signage according to claim 7, characterized in that: A plurality of evenly spaced mounting grooves are provided on the side of the baffle and pressure plate that are close to each other near the limiting plate; a plurality of evenly spaced rollers are rotatably connected in the mounting grooves.

9. A laser engraving machine for signage according to claim 1, characterized in that: A drive rod is rotatably connected to the top surface of the second limiting plate away from the support column, and the drive rod is driven by a drive assembly; a rotating plate is fixedly connected to the surface of the drive rod; a guide rail is magnetically attached to the side of the second limiting plate near the support column; a telescopic frame is installed at the bottom of the guide rail; the telescopic frame rests on the top surface of the workbench and is used to control the lifting and lowering of the guide rail; a drive plate is slidably connected to the top of the telescopic frame, and the drive plate is driven by a servo motor; a vacuum suction cup is fixedly connected to the bottom of the drive plate near the end of the second limiting plate.

10. A laser engraving machine for signage according to claim 9, characterized in that: The drive assembly includes a transmission rod; the transmission rod is slidably connected to the drive rod and fixed by a stop screw; the transmission rod can be engaged with the drive rod.

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