Laser engraving machine for character pattern signboard

Abstract

The invention provides a laser engraving machine for a character pattern signboard, and relates to the technical field of laser processing. The laser engraving machine for the character and pattern signboard comprises the signboard, a rack, a laser engraving head, a longitudinal translation drive, a transverse translation drive, a wired controller and a wireless controller. The clamping device is attracted and fixed to the magnetic table top after the electromagnet is electrified to generate magnetism, when the position needs to be adjusted, the button switch is pressed to disconnect power supply of the electromagnet, the electromagnet loses magnetism, the electromagnet can freely move within the range of the magnetic table top, the abrasion-resistant layer is arranged on the lower wall of the electromagnet, and the magnetic table top can be prevented from being abraded when the clamping device moves; the signboard is loosened and clamped through the opening and closing action between the clamping head and the clamping step, deformation of the signboard cannot be caused by the side edge clamping mode, meanwhile, the function of flattening the signboard can be achieved by moving the clamping device outwards after clamping, and after the clamping position is lifted through the lifting column, the signboard can be hollowed out.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing, in particular to a laser engraving machine for text and pattern identification plates. Background Art

[0002] Laser engraving machines can improve engraving efficiency, make the surface of the engraved area smooth and round, quickly lower the temperature of the engraved non-metallic material, and reduce the deformation and internal stress of the engraved object.

[0003] Currently, the commonly used laser engraving machine includes a workbench, a laser engraving machine, a plurality of transverse positioning blocks, a plurality of first longitudinal positioning blocks and a plurality of second longitudinal positioning blocks. The laser engraving machine is slidably connected to the workbench. The transverse positioning block, the first longitudinal positioning block and the second longitudinal positioning block are all welded to the workbench. The first longitudinal positioning block and the second longitudinal positioning block are respectively abutted against the opposite sides of the raw material. The first longitudinal positioning block and the second longitudinal positioning block cooperate to limit the raw material. When in use, the raw material is placed between the first longitudinal positioning block and the second longitudinal positioning block, one side of the raw material abuts against the transverse positioning block, and the laser engraving machine slides along the opposite sides of the workbench to engrave the raw material.

[0004] With respect to the above-mentioned related technologies, the distance between the first longitudinal positioning block and the second longitudinal positioning block is fixed, and only materials of fixed size can be placed, which limits the scope of application of the device. To solve this problem, there is a public technology on the market that proposes a laser engraving machine for identification plates, which includes a workbench, a laser engraving machine, a plurality of transverse positioning blocks and a plurality of first longitudinal positioning blocks. The laser engraving machine is slidably connected to the workbench, and the transverse positioning block and the first longitudinal positioning block are both fixedly connected to the workbench. The length extension direction of the transverse positioning block is perpendicular to the length extension direction of the longitudinal positioning block. It also includes a plurality of longitudinal positioning members, and the longitudinal positioning members cooperate with the first longitudinal positioning block for position limiting. The longitudinal positioning member is slidably connected to the workbench, and a plurality of the transverse positioning blocks are arranged at intervals along the length extension direction of the transverse positioning blocks, and a plurality of the longitudinal positioning blocks are arranged at intervals along the length extension direction of the longitudinal positioning blocks. This public technology has the effect of expanding the scope of application of the device; However, the lateral positioning and longitudinal positioning proposed in the above-mentioned public technology only play the role of positioning, and do not have the role of clamping. In addition, when hollowing out and engraving, it is necessary to avoid the support rods provided therein. One clamping cannot complete the entire engraving, and the position must be changed and clamped again. Two clampings will inevitably lead to inaccurate engraving positions. There is also a public technology on the market that proposes a laser engraving device for advertising signs, including a placement table, the four corners of the bottom of the placement table are fixedly connected with legs, the inside of the placement table is symmetrically opened with adjustment chambers, the inside of the placement table is opened with a transmission chamber corresponding to the position between the two adjustment chambers, the bottom of the placement table is fixedly installed with a first motor, the output shaft of the first motor passes through the transmission chamber and is fixedly connected with an active bevel gear, the inner wall of the adjustment chamber away from the transmission chamber is fixedly installed with a first bearing, and the first bearing is rotatably connected with a first screw. The public technology claims that the structural design is reasonable and easy to use. When laser engraving the advertising signboard, it can be effectively fixed, thereby effectively preventing the movement of the billboard due to vibration during the operation of the equipment, thereby ensuring the processing accuracy and fully meeting the use requirements. In actual applications, although the public technology can clamp the signboard through two sets of clamping plates, most of the signboards are very thin. The clamping plates close to each other proposed in the public technology clamp the sides of the signboard, which can easily cause the middle position of the signboard to arch upward due to the force on both sides, resulting in deformation, thereby affecting the engraving progress; In addition, existing laser engraving machines for text and pattern signboards, including the above two disclosed technologies, still have problems such as inconvenient position adjustment of the positioning and clamping parts and inability to complete hollow engraving in one clamping, so it is necessary to optimize and improve the structure. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a laser engraving machine for text and pattern signboards, which solves the problems of the laser engraving machine for text and pattern signboards in the prior art, such as the inconvenient position adjustment of the clamping part, the inability to complete hollow engraving by one clamping, and the unreasonable fixing method of thin signboards.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser engraving machine for text and pattern identification plates, comprising an identification plate, a stand, a laser engraving head, a longitudinal translation drive, a transverse translation drive, a wired controller and a wireless controller, the stand being supported by four sets of legs, the upper wall of the stand and the center position of which is fixedly connected to a magnetic table top, the upper wall of the stand is provided with a door frame through a transverse translation drive, the inner upper wall of the door frame is provided with a fixed plate through a longitudinal translation drive, the fixed plate extends toward the left side of the door frame and a connecting seat is slidably connected to the lower side of the fixed plate through a guide structure, the laser engraving head is fixedly connected to the lower wall of the connecting seat, a lifting drive structure for driving the connecting seat to rise and fall is provided between the connecting seat and the fixed plate, and a plurality of clamping devices for clamping the identification plate are provided on the upper wall of the magnetic table top.

[0007] Preferably, the clamping device includes a base, the lower wall of the base is provided with an adsorption structure for adsorbing and fixing with the magnetic table top, the upper wall of the base is fixedly connected with a lifting column, the upper wall of the lifting column is fixedly connected with a fixing frame, the fixing frame is composed of a horizontal plate and a vertical plate arranged on the upper wall of the horizontal plate and close to the rear wall of the horizontal plate, the horizontal plate of the fixing frame is provided with a clamping step for placing the signboard on the side away from the vertical plate, the upper wall of the fixing frame is provided with two groups of rotating shafts at a position between the clamping step and the vertical plate through two groups of rotating seats, the two groups of rotating shafts are coaxially arranged and rollers are fixedly connected between opposite ends of the two groups of rotating shafts, the circumferential outer wall of the roller is provided with a clamping head for cooperating with the clamping step to clamp the signboard, and a rotating drive structure for driving the roller to rotate is provided between the rotating shaft and the fixing frame.

[0008] Preferably, the guide structure includes two groups of sliding seats and guide rods. The two groups of sliding seats are distributed on the left and right and are fixedly connected to the front wall of the fixed plate in sequence. The two groups of guide rods are fixedly connected to the upper wall of the connecting seat. The ends of the two groups of guide rods away from the connecting seat are respectively slidably connected to the inner side walls of a group of sliding seats.

[0009] Preferably, the lifting drive structure is a cylinder, the cylinder is fixedly connected to the front wall of the fixed plate, and the end of the cylinder extending shaft is fixedly connected to the upper wall of the connecting seat.

[0010] Preferably, the adsorption structure includes an electromagnet and a button switch, the button switch is arranged on the circumferential outer wall of the base, a cavity penetrating the lower wall is arranged inside the base, and the electromagnet is fixedly connected to the inner wall of the cavity.

[0011] Preferably, the lower wall of the electromagnet is glued with a wear-resistant layer, the thickness of the wear-resistant layer is one tenth of the maximum adsorption distance of the electromagnet, and the wear-resistant layer is polytetrafluoroethylene.

[0012] Preferably, the rotary drive structure includes a motor and two sets of gears, the motor is fixedly connected to a side of the fixed frame away from the roller, the two sets of gears are respectively fixedly connected to the outer wall of the rotating shaft and the motor extends out of the outer wall of the shaft, and the two sets of gears are meshed with each other.

[0013] Preferably, a wireless receiver is provided on the upper wall of the motor, and the motor is connected to a wireless controller via a wireless signal via the wireless receiver.

[0014] The present invention provides a laser engraving machine for text and pattern identification plates. It has the following beneficial effects: Compared with the prior art, the laser engraving machine for text and pattern identification plates has a clamping device that is magnetized by the electromagnet after being energized, and is adsorbed and fixed to the magnetic table. When the position needs to be adjusted, the power supply of the electromagnet is disconnected by pressing the button switch, so that the electromagnet loses its magnetism and can be moved arbitrarily within the range of the magnetic table. After the movement is completed, the button switch is released and the electromagnet is energized again to generate magnetism, and is adsorbed and fixed to the magnetic table at the new position, so it is very convenient to adjust the position.

[0015] Compared with the prior art, the laser engraving machine for text and pattern identification plates has a wear-resistant layer on the lower wall of the electromagnet, which can prevent the magnetic table from being worn when the clamping device moves. At the same time, by restricting the thickness of the wear-resistant layer, the magnetic adsorption effect of the electromagnet is not affected.

[0016] Compared with the prior art, the laser engraving machine for text and pattern nameplates uses a motor to drive the roller in the clamping device to rotate forward and flip, thereby driving the clamping head and the clamping step to realize the opening and closing action. The opening and closing action between the clamping head and the clamping step realizes the loosening and clamping of the nameplate. The side clamping method will not cause deformation of the nameplate. At the same time, the clamping device can be moved outward after clamping to level the nameplate. After raising the clamping position by raising the lifting column, the nameplate can be hollowed out. Since the clamping head and the clamping step only clamp a small part of the edge of the nameplate, the engraving operation can be completed by clamping once. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A; Figure 3 For the present invention Figure 1 A partial enlarged view of point B in the middle; Figure 4 This is a schematic diagram of the connection structure of the fixing frame, the motor and the gears of the present invention; Figure 5 It is a cross-sectional schematic diagram of the connection structure of the base, the electromagnet and the wear-resistant layer of the present invention; Figure 6 It is a partial schematic diagram of the side structure of the fixing frame in the clamping state of the clamping head and the clamping step of the present invention; Figure 7 It is a partial schematic diagram of the side structure of the fixing frame when the clamping head and the clamping step are loosened according to the present invention.

[0018] Among them, 1. support leg; 2. stand; 3. magnetic table top; 4. door frame; 5. laser engraving head; 6. fixed plate; 7. sliding seat; 8. guide rod; 9. connecting seat; 10. cylinder; 11. base; 12. wear-resistant layer; 13. button switch; 14. lifting column; 15. fixed frame; 1501, clamping step; 16. roller; 1601, clamping head; 17. rotating shaft; 18. gear; 19. motor; 20. wireless receiver; 21. electromagnet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] like Figures 1 to 7 As shown, an embodiment of the present invention provides a laser engraving machine for text and pattern identification plates, including an identification plate, a stand 2, a laser engraving head 5, a longitudinal translation drive, a transverse translation drive, a wired controller and a wireless controller. The stand 2 is supported by four sets of legs 1, and a magnetic table 3 is fixedly connected to the upper wall and the center position of the stand 2. A door frame 4 is provided on the upper wall of the stand 2 through a transverse translation drive, and a fixed plate 6 is provided on the inner upper wall of the door frame 4 through a longitudinal translation drive. The fixed plate 6 extends toward the left side of the door frame 4 and a connecting seat 9 is slidably connected to the lower side of the fixed plate 6 through a guide structure. The laser engraving head 5 is fixedly connected to the lower wall of the connecting seat 9, and a useful The lifting drive structure for driving the connection seat 9 to lift and lower, the upper wall of the magnetic table 3 is provided with a plurality of clamping devices for clamping the identification plate. In this embodiment, the laser engraving head 5, the longitudinal translation drive, the transverse translation drive, the wired controller and the wireless controller are all mature technologies currently available on the market. The laser engraving head 5 is used for engraving text patterns. The longitudinal translation drive is used to drive the laser engraving head 5 to move forward and backward, and the transverse translation drive is used to drive the door frame 4 and the laser engraving head 5 to move left and right. The wired controller is used to control the actions of the laser engraving head 5, the longitudinal translation drive and the transverse translation drive. The wireless controller synchronously controls the actions of the motors 19 in the plurality of clamping devices through wireless signals. In order to control the horizontal height of the laser engraving head 5, the guide structure includes two groups of sliding seats 7 and guide rods 8. The two groups of sliding seats 7 are distributed left and right and are fixedly connected to the front wall of the fixed plate 6 in sequence. The two groups of guide rods 8 are fixedly connected to the upper wall of the connecting seat 9. The ends of the two groups of guide rods 8 away from the connecting seat 9 are respectively slidably connected to the inner side wall of one group of sliding seats 7. The lifting drive structure is a cylinder 10. The cylinder 10 is fixedly connected to the front wall of the fixed plate 6. The end of the extended shaft of the cylinder 10 is fixedly connected to the upper wall of the connecting seat 9. The extension and retraction of the extended shaft of the cylinder 10 can drive the laser engraving head 5 to descend and ascend, so as to meet the requirements of engraving of signboards of different thicknesses. The guide rod 8 is used to maintain the stability of the lifting action of the laser engraving head 5 and improve the engraving accuracy. In order to facilitate the fixing and movement of the clamping device, the clamping device includes a base 11, and the lower wall of the base 11 is provided with an adsorption structure for adsorbing and fixing with the magnetic absorption table 3, and the adsorption structure includes an electromagnet 21 and a button switch 13, and the button switch 13 is arranged on the outer wall of the circumference of the base 11, and a cavity penetrating with the lower wall is arranged inside the base 11, and the electromagnet 21 is fixedly connected to the inner wall of the cavity. After the button switch 13 is pressed, the electromagnet 21 is powered off and loses its magnetism. At this time, the position of the base 11 can be conveniently moved as needed. After moving to a new position, the button switch 13 can be released to make the electromagnet 21 powered on again to generate magnetism, and then adsorbed and fixed with the magnetic absorption table 3; In order to prevent the magnetic table 3 from being worn when the base 11 moves, a wear-resistant layer 12 is connected to the lower wall of the electromagnet 21 by glue. The thickness of the wear-resistant layer 12 is one tenth of the maximum adsorption distance of the electromagnet 21. The wear-resistant layer 12 is made of polytetrafluoroethylene. The wear-resistant layer 12 made of polytetrafluoroethylene has good wear resistance and a smooth surface, which is easy to move and will not cause wear of the magnetic table 3, thereby effectively improving the service life of the magnetic table 3. In order to facilitate hollow carving, a lifting column 14 is fixedly connected to the upper wall of the base 11, and a fixing frame 15 is fixedly connected to the upper wall of the lifting column 14. The lifting column 14 raises the distance between the clamping position of the sign and the magnetic table 3 as a whole, thereby facilitating the hollow carving operation; In order to better fix the sign, the fixing frame 15 is composed of a horizontal plate and a vertical plate arranged on the upper wall of the horizontal plate and close to the rear wall of the horizontal plate. A clamping step 1501 for placing the sign is arranged on the upper wall of the horizontal plate of the fixing frame 15 and located on the side away from the vertical plate. Two sets of rotating shafts 17 are rotatably connected to the upper wall of the fixing frame 15 and located between the clamping step 1501 and the vertical plate through two sets of rotating seats. The two sets of rotating shafts 17 are coaxially arranged and rollers 16 are fixedly connected between the opposite ends of the two sets of rotating shafts 17. A clamping head 1601 for cooperating with the clamping step 1501 to clamp the sign is arranged on the circumferential outer wall of the roller 16. A rotating driving structure for driving the roller 16 to rotate is arranged between the rotating shaft 17 and the fixing frame 15. The rotating driving structure includes a motor 19 and two sets of gears 18. The motor 19 is fixedly connected to the side of the fixing frame 15 away from the roller 16. The two sets of gears 18 are respectively fixedly connected to the outer wall of the rotating shaft 17 and the motor 1 9 extends out of the outer wall of the shaft and the two sets of gears 18 are meshed with each other. A wireless receiver 20 is arranged on the upper wall of the motor 19. The motor 19 is connected to the wireless controller by wireless signals through the wireless receiver 20. After the multiple clamping devices are adjusted to the position according to the size of the identification plate, the wireless controller controls the motor 19 to start, driving the roller 16 to rotate, so that an open state is formed between the clamping head 1601 and the clamping step 1501, and then the identification plate is placed on the clamping step 1501 of the multiple clamping devices, and then the motor 19 is controlled to flip, driving the clamping head 1601 to clamp the identification plate. In order to avoid the middle part of the relatively thin identification plate from sinking and deforming, the electromagnet 21 of the clamping device that is not in the positioning position can be cut off after clamping, and then the clamping device is moved outward to form a pulling effect on the identification plate, thereby pulling the identification plate flat, and then re-adsorbing and fixing the clamping device at the new position. After the clamping is completed, the engraving work can be carried out.

[0021] Working principle: In this embodiment, the laser engraving head 5, the longitudinal translation drive, the transverse translation drive, the wired controller and the wireless controller are all mature technologies available on the market. The laser engraving head 5 is used for engraving text patterns. The longitudinal translation drive is used to drive the laser engraving head 5 to move forward and backward, and the transverse translation drive is used to drive the gantry 4 and the laser engraving head 5 to move left and right. The wired controller is used to control the actions of the laser engraving head 5, the longitudinal translation drive and the transverse translation drive. The wireless controller synchronously controls the actions of the motors 19 in the multiple clamping devices through wireless signals; the extension and retraction of the cylinder 10 can drive the laser engraving head 5 to descend and ascend to meet the requirements of engraving of signboards of different thicknesses. The guide rod 8 is used to maintain the stability of the lifting action of the laser engraving head 5 and improve the engraving accuracy; after the button switch 13 is pressed, the electromagnet 21 is powered off and loses its magnetism. At this time, the position of the base 11 can be conveniently moved as needed. After moving to the new position, releasing the button switch 13 can make the electromagnet 21 energized again to generate magnetism, and then adsorbed and fixed to the magnetic absorption table 3; wear-resistant layer made of polytetrafluoroethylene 12, has good wear resistance, and the surface is smooth, easy to move, will not cause wear of the magnetic table 3, and effectively improves the service life of the magnetic table 3; the lifting column 14 raises the distance between the clamping position of the sign and the magnetic table 3 as a whole, thereby facilitating the hollowing and engraving operation; the motor 19 is connected to the wireless controller by wireless signal through the wireless receiver 20, and after the multiple clamping devices are adjusted according to the size of the sign, the wireless controller controls the motor 19 to start, driving the roller 16 to rotate, so that the clamping head 1601 and the clamping table An open state is formed between the steps 1501, and then the identification plate is placed on the clamping steps 1501 of the multiple clamping devices, and then the motor 19 is controlled to flip, driving the clamping head 1601 to clamp the identification plate. In order to prevent the middle part of the relatively thin identification plate from sinking and deforming, the power of the electromagnet 21 of the clamping device that is not in the positioning position can be cut off after clamping, and then the clamping device can be moved outward to form a pulling effect on the identification plate, thereby pulling the identification plate flat, and then the clamping device is re-adsorbed at the new position. After clamping is completed, the engraving work can be started.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser engraving machine for text and pattern identification plates, characterized by: The invention comprises a signboard, a stand (2), a laser engraving head (5), a longitudinal translation drive, a transverse translation drive, a wired controller and a wireless controller, wherein the stand (2) is supported by four groups of legs (1), a magnetic table top (3) is fixedly connected to the upper wall and the center of the stand (2), a door frame (4) is arranged on the upper wall of the stand (2) through transverse translation drive, a fixing plate (6) is arranged on the inner upper wall of the door frame (4) through longitudinal translation drive, the fixing plate (6) extends toward the left side of the door frame (4) and a connecting seat (9) is slidably connected to the lower part of the fixing plate (6) through a guide structure, the laser engraving head (5) is fixedly connected to the lower wall of the connecting seat (9), a lifting drive structure for driving the connecting seat (9) to lift and lower is arranged between the connecting seat (9) and the fixing plate (6), and a plurality of clamping devices for clamping the signboard are arranged on the upper wall of the magnetic table top (3).

2. The laser engraving machine for text and pattern identification plates according to claim 1, characterized in that: The clamping device comprises a base (11), the lower wall of the base (11) is provided with an adsorption structure for adsorbing and fixing with the magnetic table (3), the upper wall of the base (11) is fixedly connected with a lifting column (14), the upper wall of the lifting column (14) is fixedly connected with a fixing frame (15), the fixing frame (15) is composed of a horizontal plate and a vertical plate arranged on the upper wall of the horizontal plate and close to the rear wall of the horizontal plate, the upper wall of the horizontal plate of the fixing frame (15) and located away from the vertical plate is provided with a clamping step (1501) for placing the sign, the fixing frame Two groups of rotating shafts (17) are rotatably connected to the upper wall (15) and located between the clamping step (1501) and the vertical plate through two groups of rotating seats. The two groups of rotating shafts (17) are coaxially arranged and a roller (16) is fixedly connected between opposite ends of the two groups of rotating shafts (17). A clamping head (1601) for cooperating with the clamping step (1501) to clamp the identification plate is arranged on the circumferential outer wall of the roller (16). A rotating driving structure for driving the roller (16) to rotate is arranged between the rotating shaft (17) and the fixed frame (15).

3. The laser engraving machine for text and pattern identification plates according to claim 2, characterized in that: The guide structure comprises two groups of sliding seats (7) and guide rods (8); the two groups of sliding seats (7) are distributed on the left and right and are fixedly connected to the front wall of the fixed plate (6) in sequence; the two groups of guide rods (8) are fixedly connected to the upper wall of the connecting seat (9); and the ends of the two groups of guide rods (8) away from the connecting seat (9) are respectively slidably connected to the inner side wall of one group of sliding seats (7).

4. The laser engraving machine for text and pattern identification plates according to claim 3, characterized in that: The lifting drive structure is a cylinder (10), and the cylinder (10) is fixedly connected to the front wall of the fixed plate (6). The extended shaft end of the cylinder (10) is fixedly connected to the upper wall of the connecting seat (9).

5. The laser engraving machine for text and pattern identification plates according to claim 4, characterized in that: The adsorption structure comprises an electromagnet (21) and a button switch (13); the button switch (13) is arranged on the circumferential outer wall of the base (11); a cavity penetrating the lower wall is arranged inside the base (11); and the electromagnet (21) is fixedly connected to the inner wall of the cavity.

6. The laser engraving machine for text and pattern identification plates according to claim 5, characterized in that: The lower wall of the electromagnet (21) is glued to a wear-resistant layer (12), the thickness of the wear-resistant layer (12) is one tenth of the maximum adsorption distance of the electromagnet (21), and the wear-resistant layer (12) is polytetrafluoroethylene.

7. The laser engraving machine for text and pattern identification plates according to claim 6, characterized in that: The rotary drive structure comprises a motor (19) and two sets of gears (18); the motor (19) is fixedly connected to a side of the fixed frame (15) away from the roller (16); the two sets of gears (18) are respectively fixedly connected to the outer wall of the rotating shaft (17) and the outer wall of the shaft where the motor (19) protrudes; and the two sets of gears (18) are meshed with each other.

8. The laser engraving machine for text and pattern identification plates according to claim 7, characterized in that: A wireless receiver (20) is provided on the upper wall of the motor (19), and the motor (19) is connected to a wireless controller via a wireless signal via the wireless receiver (20).

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