Laser edge trimmer for corners of metal labels

Abstract

The invention belongs to the technical field of metal label processing, and particularly relates to a metal label corner laser edge trimmer which comprises a numerical control coordinate assembly and a cutting table which are sequentially arranged in the vertical direction, and further comprises a guide piece, a material carrying cup and an ox horn cup, the numerical control coordinate assembly is provided with a laser head, and the guide piece is arranged on the back face of a metal label; two metal wires, an LED lamp and a lithium battery are arranged in the guide part, the LED lamp and the lithium battery are connected between the two metal wires, a guide hole matched with the guide part and a negative pressure part used for sucking a metal label are formed in an opening of the material carrying cup, and the metal label is positioned relative to the guide hole through the guide part to face the laser head during trimming. And the edge of the metal label is kept away from the material carrying cup and the negative pressure piece. The edge of the metal label can be avoided while rapid positioning is achieved, a falling space is reserved for cut waste edges, and the device is matched with a conductive coolant to assist heat dissipation in the trimming process and indicate the in-place state.

Description

Technical Field

[0001] The invention belongs to the technical field of metal sign processing, and in particular relates to a metal sign corner laser trimming machine. Background Art

[0002] During the processing of metal signs, laser trimming is fast and can be completed in one go, which improves production efficiency. Laser trimming generally undergoes high-temperature ablation, and the cutting edge is flat and smooth without leaving defects such as burrs and cracks.

[0003] Metal signs come in a variety of shapes, such as square, oval, triangle, etc. Some high-end signs even have lace edges. Metal signs can be placed flat on a hollowing table and cut with a laser beam emitted by a laser head to remove excess waste edges or cut out patterns and rounded corners. However, there are still the following shortcomings: When loading metal labels, they often need to be manually positioned and centered to facilitate the laser head to find their edges. However, manual positioning is inefficient, and each metal label must be manually positioned in the loading area, which is not conducive to shortening the positioning preparation time before trimming. The metal sign is positioned on its four sides with a clamp so that the clamp blocks its edges and prevents waste edges from falling off after cutting. The staff has to separate the waste edges, and each metal sign has to be cleaned up after trimming, which is time-consuming and laborious. Summary of the invention

[0004] The purpose of the present invention is to provide a laser trimming machine for metal sign corners, which can avoid the edge of the metal sign while quickly positioning, leaving space for the cut waste edges to fall, and cooperate with conductive coolant to assist in heat dissipation and indicate the status of the trimming process.

[0005] The technical solution adopted by the present invention is as follows: A laser trimming machine for metal sign corners, comprising a numerical control coordinate assembly and a cutting table arranged vertically in sequence, a laser head being installed on the numerical control coordinate assembly, and further comprising: A guide member, wherein the guide member is arranged on the back of the metal sign, and two metal wires and an LED lamp and a lithium battery connected between the two metal wires are arranged inside the guide member; A loading cup, wherein a guide hole cooperating with the guide member and a negative pressure member for absorbing the metal plate are provided at the opening of the loading cup. When trimming, the metal plate is positioned relative to the guide hole through the guide member to face the laser head, and the edge of the metal plate avoids the loading cup and the negative pressure member. A hollow cantilever and a rotating mechanism are sequentially connected to the outside of the loading cup; A bull horn cup, wherein a support bolt, a lifting platform and a lifting mechanism are vertically arranged at the bottom of the bull horn cup in sequence, and a conductive coolant is filled inside the bull horn cup. When the metal plate faces the laser head, the lifting mechanism lifts the bull horn cup to make the bottom of the guide member soaked in the conductive coolant, and the conductive light state of the LED lamp indicates the arrival signal, and the volatilization of the conductive coolant takes away part of the heat of the metal plate and the guide member, which is used for heat dissipation during trimming.

[0006] As an optional solution, an alloy ring is provided between the tops of the guide members, a straightening ring is integrally installed on the bottom surface of the alloy ring, and an annular groove adapted to the straightening ring is opened on the top surface of the loading cup. When the metal sign is positioned, the straightening ring is dropped through the alloy ring to engage with the annular groove to horizontally limit the metal sign.

[0007] As an optional solution, the top surface of the alloy ring is provided with a glue storage groove and a glue extraction port connected to the glue storage groove, a magnetic block is embedded in the inner wall of the glue extraction port, and a wire extending from the alloy ring is fixed on the top of the magnetic block.

[0008] As an optional solution, wire grooves for placing the metal wires are provided on both sides of the guide member, and a lamp placement groove and a receiving groove connected to the wire grooves are provided inside the guide member, wherein the lamp placement groove is used to place LED lamps, and the receiving groove is used to place lithium batteries.

[0009] As an optional solution, the negative pressure member includes an electric suction cup and an elastic member vertically installed at the opening of the loading cup. The end of the electric suction cup vertically passes through the middle of the loading cup. When the metal sign is sucked, the elastic member is pressed down to make the bottom of the guide member pass through the guide hole.

[0010] As an optional solution, the rotating mechanism includes a hollow tube and a servo motor spaced apart at the bottom of the cutting table, a driving gear ring is fixed to the bottom of the hollow tube, and the top is fixedly connected to one end of the hollow cantilever, and an active gear meshing with the teeth of the driving gear ring is fixed to the output end of the servo motor.

[0011] As an optional solution, the interior of the hollow tube is vertically connected with a main air pipe, a rotary joint and a branch pipe in sequence, wherein one end of the main air pipe away from the rotary joint passes through the lower opening of the hollow tube, the rotary joint is rotatably installed on the inner wall of the hollow tube, an electric valve is installed on the branch pipe and the end of the branch pipe away from the rotary joint is connected to the end of the electric suction cup.

[0012] As an optional solution, the lifting mechanism includes an electric push rod installed at the bottom of the cutting table and separated from the hollow tube, and the output end of the electric push rod is installed with a metal carrier plate and a side flange plate connected to the outer side of the metal carrier plate, and the electric push rod is connected to the bottom of the hollow cantilever through the side flange plate.

[0013] As an optional solution, a material waiting area with open sides and a bracket located in the material waiting area are provided on the outside of the cutting table, and the bracket is used to place the metal label.

[0014] As an optional solution, the outer sleeve of the support bolt is provided with an elastic bushing, and a positioning tube engaged with the support bolt is fixed on the top surface of the lifting platform. When the support bolt is inserted into the positioning tube, the horn cup performs buffering by compressing the elastic bushing.

[0015] The technical effects achieved by the present invention are: The present invention uses a steel ruler to find the midpoint of the metal sign in advance, and adheres the guide to the back of the metal sign according to the midpoint so as to quickly find the reference. When trimming, the metal sign is positioned relative to the guide hole through the guide to face the laser head, and the negative pressure part is used to absorb the metal sign, and the edge of the metal sign avoids the loading cup and the negative pressure part, and then the edge of the metal sign in the loading area is quickly delivered to the laser cutting area, and the central axis of the loading cup and the guide are used as the cutting reference, so that the laser beam can quickly align with the edge of the metal sign, and there is no need to manually position it in the loading area, which is conducive to shortening the positioning preparation time before trimming. Then the horn cup is lifted, so that the bottom of the guide is soaked in the conductive coolant, and the conductive light state of the LED lamp indicates the arrival signal. At the same time, the laser beam causes the temperature of the metal sign to rise, and the heat therein is transferred to the horn cup along the guide, and the volatilization of the conductive coolant takes away part of the heat of the metal sign and the guide, which is used to dissipate heat during trimming to prevent the negative pressure part and the metal sign from overheating.

[0016] The present invention uses a thin sheet-shaped alloy ring to carry three guide parts to form a whole, which is convenient for sticking to the back of the metal nameplate at one time. When positioning the metal nameplate, the alloy ring is dropped to engage with the annular groove. On the one hand, it is convenient for the alloy ring to be centered on the top of the loading cup without manual centering, thus saving time in the positioning stage. On the other hand, the metal nameplate is horizontally limited to prevent the center of gravity of the metal nameplate from shifting and causing skew when the waste edge falls.

[0017] In order to facilitate the guide to be adhered to the back of the metal sign, the present invention applies glue with low viscosity in the glue storage tank and then adheres it to the back of the metal sign, so that the glue is annular and firmly adheres to the guide and the alloy ring, and the excess glue can overflow from the glue opening to prevent the alloy ring from being padded, making the loading more convenient. When the metal sign is removed, the wire can be pulled hard to drive the glue strip to separate from the glue storage tank along the glue opening, so that the alloy ring can be debonded for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the metal sign corner laser trimming machine of the present invention; Figure 2 is a front view of the cutting table of the present invention; Figure 3 It is a front view of the numerical control coordinate assembly of the present invention; Figure 4 is a front view of the hollow tube of the present invention; Figure 5 This is a front view of the electric suction cup and the main air pipe in the communication state of the present invention; Figure 6 This is a front view of the guide member and the loading cup of the present invention in an assembled state; Figure 7 is a top view of the alloy ring of the present invention; Figure 8 This is a front view of the electric suction cup and the loading cup of the present invention in an assembled state; Fig. 9 is a cross-sectional view of a guide member of the present invention; Fig.10 is a front view of the trigger member of the present invention; Fig.11 is a front view of the lifting mechanism of the present invention; Fig.12 It is a front view of the ox horn cup of the present invention; Fig.13 is a plan view of a metal sign applicable to a portion of the present invention; Fig.14 is a system block diagram of the control mainboard of the present invention; Fig.15 It is a circuit diagram of the LED lamp of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Cutting table; 2. CNC coordinate assembly; 3. Laser head; 301. Laser generator; 4. Guide; 402. Glue storage tank; 403. Glue opening; 404. Magnetic block; 405. Wire drawing; 501. Metal wire; 502. LED light; 503. Lithium battery; 504. Wire slot; 505. Lamp slot; 506. Accommodation slot; 6. Loading cup; 601. Guide hole; 602. Hollow cantilever; 603. Elastic part; 604. Electric suction cup; 60 5. Annular groove; 606. Elastic bushing; 607. Positioning tube; 7. Horn cup; 701. Support bolt; 702. Lifting platform; 8. Alloy ring; 801. Straightening ring; 9. Hollow tube; 901. Drive gear ring; 902. Driving gear; 10. Servo motor; 11. Main air pipe; 12. Rotary joint; 13. Branch pipe; 14. Electric valve; 15. Waiting area; 16. Bracket; 17. Electric push rod; 18. Metal carrier plate; 19. Side flange plate. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0021] like Figure 1-Figure 15 As shown in the figure, a laser trimming machine for metal sign edges and corners can be controlled by the RDC6442G / S model control motherboard. The multi-channel uses the I / O interface for control signal transmission. The communication with the PC supports Ethernet communication and USB communication, which can be automatically selected. Fig.14 As shown, this embodiment includes a laser head 3, a CNC coordinate assembly 2 and a cutting table 1 which are arranged vertically in sequence. When processing a metal label, the metal label is first placed inside the cutting table 1, and the laser head 3 is moved by the X-axis drag chain track and the Y-axis drag chain track included in the CNC coordinate assembly 2 to align with the metal label. Then, a laser beam is emitted to the laser head 3 through the laser generator 301 and the laser restraint on the CNC coordinate assembly 2. The laser head 3 is focused and emitted to the edge of the metal label to cut off excess waste edges.

[0022] See attached Figure 1 and Figure 2 In this embodiment, a material waiting area 15 with a side opening and a bracket 16 located in the material waiting area 15 are arranged outside the cutting table 1. The bracket 16 is fixed to the material waiting area 15 by bolts for stacking metal labels. The metal labels before and after trimming are placed on different brackets 16 respectively, so as to be distinguished.

[0023] When loading, if Fig.13As shown, the types of metal labels are not limited to abcd, and the processing difficulty is also different. For example, some metal labels with lace have different edge shapes and different reference points relative to the laser head 3, so each batch of metal labels needs to be positioned independently, and the preliminary preparation time is relatively long.

[0024] See attached Figure 1 , Figure 2 and Figure 4 In order to shorten the preparation time, the present embodiment further includes a guide member 4, a loading cup 6, and a horn cup 7. When loading, the staff uses a steel ruler to find the midpoint of the metal label outside the cutting table 1, surrounds the midpoint with three guide members 4 in a circular array and adheres them to the back of the metal label so as to quickly find the reference. A guide hole 601 cooperating with the guide member 4 and a negative pressure member for sucking the metal label are provided at the opening of the loading cup 6. When trimming, the metal label is positioned relative to the guide hole 601 through the guide member 4 to face the laser head 3, and the negative pressure member is used to suck the metal label. And make the edge of the metal sign avoid the loading cup 6 and the negative pressure piece, and the hollow cantilever 602 and the rotating mechanism are connected in sequence on the outside of the loading cup 6. In this embodiment, the four hollow cantilever arms 602 are rotated by the rotating mechanism to realize the alternating loading and unloading of the four stations. Each rotation is 90°, and the edge of the metal sign in the loading area is quickly delivered to the laser cutting area. The central axis of the loading cup 6 and the three guide members 4 are used as the cutting reference, so that the laser beam can be quickly aligned with the edge of the metal sign without manual positioning in the loading area, which is conducive to shortening the positioning preparation time before trimming. After the guide member 4 falls, it is received by the horn cup 7; Furthermore, in this embodiment, a support bolt 701, a lifting platform 702 and a lifting mechanism are vertically arranged at the bottom of the horn cup 7 in sequence, and a conductive coolant is filled inside the horn cup 7. When the metal plate faces the laser head 3, the horn cup 7 is lifted by the lifting mechanism, so that the bottom of the guide member 4 is soaked in the conductive coolant, and two metal wires 501 and an LED lamp 502 and a lithium battery 503 connected between the two metal wires 501 are arranged inside the guide member 4. Fig.15 As shown, once the two metal wires 501 contact the conductive coolant, current will be conducted, and the conductive light-emitting state of the LED lamp 502 indicates the arrival signal. At the same time, the laser beam causes the temperature of the metal plate to rise, and the heat therein is transferred to the horn cup 7 along the guide member 4. The conductive coolant evaporates and takes away part of the heat of the metal plate and the guide member 4, which is used for heat dissipation during trimming to prevent the negative pressure member and the metal plate from overheating. Furthermore, the conductive coolant can be ethylene glycol or HSF-300 (graphene / CNT composite conductive transparent antistatic liquid). Among them, propylene glycol generally boils at 188°C, so it can be mixed with tap water, and its toxicity is minimal. It is generally used for nail polish and has almost no toxic side effects. Since its main components are graphene and CNT (carbon nanotubes), these materials are relatively environmentally friendly and are mainly dispersed in deionized water. At the same time, the liquid does not contain harmful heavy metals and other toxic substances, and complies with environmental regulations such as SGS and REACH.

[0025] Among them, the lithium battery 503 can be a No. 7 dry battery, which is small in size and can be easily replaced by opening the cover reserved on the guide member 4, and the cost is low. In addition, the LED light 502 used has low energy consumption and can be bright for a long time with only one No. 7 dry battery. After the replacement is completed, the cover reserved on the guide member 4 can be tightened with screws to prevent it from falling.

[0026] In this embodiment, the conductive coolant can be preferably HSF-300 solution, which is almost harmless to the human body. To a certain extent, it is convenient for the staff to take and put the conductive coolant in the horn cup 7 more safely. Fig.12 As shown, both ends of the horn cup 7 are opened, the vertical opening is used to insert the metal wire 501, and the oblique opening is used to volatilize the conductive coolant.

[0027] See attached Figure 6 , Figure 7 and Figure 8 , an alloy ring 8 is arranged between the tops of the guide members 4. In this embodiment, a thin sheet-shaped alloy ring 8 is selected to carry three guide members 4, and the guide members 4 are threadedly installed on the alloy ring 8 to form a whole, which is convenient for sticking to the back of the metal nameplate at one time. Since the bottom surface of the alloy ring 8 is integrally installed with a straightening ring 801, and the top surface of the loading cup 6 is provided with an annular groove 605 adapted to the straightening ring 801, when the metal nameplate is positioned, the straightening ring 801 is dropped by the alloy ring 8 and engages with the annular groove 605. On the one hand, it is convenient for the alloy ring 8 to be centered on the top of the loading cup 6, and on the other hand, the metal nameplate is horizontally limited to prevent the center of gravity of the metal nameplate from shifting and causing skew when the waste edge falls.

[0028] See attached Figure 5 , Figure 6 and Figure 7In order to facilitate the guide member 4 to be adhered to the back of the metal sign, in this embodiment, a glue storage groove 402 and a glue opening 403 connected to the glue storage groove 402 are opened on the top surface of the alloy ring member 8. Glue with lower viscosity is applied to the glue storage groove 402 and then pasted to the back of the metal sign, so that the glue is annular and firmly adheres to the guide member 4 and the alloy ring member 8. Excess glue can overflow from the glue opening 403 to prevent the alloy ring member 8 from being padded. Since a magnetic block 404 is embedded and installed on the inner wall of the glue opening 403, and a wire 405 extending from the alloy ring member 8 is bonded to the top of the magnetic block 404, when the metal sign is removed, the wire 405 can be pulled hard to drive the glue strip to separate from the glue storage groove 402 along the glue opening 403, so as to facilitate the degumming of the alloy ring member 8 for subsequent use.

[0029] See attached Figure 1 , Figure 2 and Figure 4 The rotating mechanism of this embodiment includes a hollow tube 9 and a servo motor 10 arranged at intervals at the bottom of the cutting table 1. A three-phase asynchronous motor of the YEJ series can be selected to be electrically connected to the control main board. Since a driving gear ring 901 is welded at the bottom of the hollow tube 9 and the top is welded to one end of the hollow cantilever 602, the driving gear 902 welded at the output end of the servo motor 10 and meshing with the teeth of the driving gear ring 901 is used for transmission. The start button can be manually pressed. When the servo motor 10 is started, the hollow tube 9 and the four hollow cantilevers 602 are intermittently rotated to realize the alternating loading and unloading of the four stations, and each rotation is 90°, so that the metal label edge of the loading area is quickly delivered to the laser cutting area. When they stop, the staff can load the material at the station farthest from the laser head 3.

[0030] See attached Figure 6 and Figure 8 The negative pressure member of this embodiment includes an electric suction cup 604 and an elastic member 603 vertically installed at the opening of the loading cup 6, wherein the elastic member 603 is composed of a telescopic tube and a spring sleeved on the outside of the telescopic tube, and the two ends of the telescopic tube are respectively welded to the inner side of the loading cup 6 and the outer side of the electric suction cup 604, and the end of the electric suction cup 604 is vertically passed through the middle of the loading cup 6. When the metal sign is sucked, the elastic member 603 is pressed down through the metal sign and the alloy ring 8, so that the bottom of the guide member 4 passes through the guide hole 601, completing the positioning matching process. Here, the aperture of the guide hole 601 is slightly larger than the aperture of the guide member 4.

[0031] See attached Figure 4 , Figure 5 and Fig.14, the interior of the hollow tube 9 is vertically connected with a main air pipe 11, a rotary joint 12 and a branch pipe 13 in sequence, wherein the end of the main air pipe 11 away from the rotary joint 12 is passed through the lower opening of the hollow tube 9, and the air compression tank and the air compressor can be connected in sequence. This technical solution is a prior art and is not shown in the figure. The air compressor is started to suck the excess air in the air compression tank to form a negative pressure condition, and the rotary joint 12 is rotatably installed on the inner wall of the hollow tube 9 through the bearing. While connecting the branch pipe 13, it is convenient for the branch pipe 13 to rotate. An electric valve 14 is installed on the branch pipe 13, and the end of the branch pipe 13 away from the rotary joint 12 is connected to the end of the electric suction cup 604. Since the signal of the electric valve 14 is connected to the control main board, the electric valve 14 can be remotely controlled to open, so that the branch pipe 13 maintains a negative pressure state. Conversely, the electric valve 14 is closed, and the branch pipe 13 is released from the negative pressure state.

[0032] See attached Figure 2 , Figure 8 and Fig.14 The lifting mechanism includes an electric push rod 17 installed at the bottom of the cutting table 1 and separated from the hollow tube 9. The electric push rod 17 can be an electric push rod of the DTZ-1600-300-50 model and is electrically connected to the control main board. The output end of the electric push rod 17 is installed with a metal carrier plate 18 and a side flange plate 19 connected to the outer side of the metal carrier plate 18 by screws. The electric push rod 17 is connected to the bottom of the hollow cantilever 602 through the side flange plate 19. The electric push rod 17 is started to drive the metal carrier plate 18, the side flange plate 19 and the hollow cantilever 602 to rise, so as to lift the horn cup 7 until the conductive coolant infiltrates the bottom of the guide member 4. There is no need to manually move the horn cup 7, but to lower the horn cup 7 until it is lower than the guide member 4, leaving enough safety distance for loading and unloading of metal signs.

[0033] See attached Fig. 9 and Fig.10 In order to ensure smooth positioning, this embodiment provides wire grooves 504 for placing the metal wire 501 on both sides of the guide member 4, which can hide the metal wire 501 and prevent the metal wire 501 from scratching the inner wall of the guide hole 601. In addition, since the guide member 4 is provided with a lamp placement groove 505 and a receiving groove 506 that are connected to the wire groove 504, the lamp placement groove 505 is used to place the LED lamp 502, and the receiving groove 506 is used to place the lithium battery 503, the LED lamp 502 and the lithium battery 503 can be suspended in the air, avoiding the inner wall of the guide hole 601 and not contacting the conductive coolant.

[0034] See attached Fig.11 and Fig.12The outer sleeve of the support bolt 701 is provided with an elastic bushing 606 made of fluororubber. The elastic bushing 606 can be deformed under pressure for buffering. A positioning tube 607 that is inserted into the support bolt 701 is welded on the top surface of the lifting platform 702. When the support bolt 701 is inserted into the positioning tube 607, the horn cup 7 is buffered by compressing the elastic bushing 606. Moreover, the number of positioning tubes 607 in this embodiment can be set to 13. By changing the position of the support bolt 701 laterally and inserting different positioning tubes 607, the spacing between the horn cups 7 can be changed to meet the needs of metal signs of different shapes.

[0035] The working principle of the present invention is as follows: when loading materials, the staff uses a steel ruler to find the midpoint of the metal label outside the cutting table 1, and surrounds the midpoint with three guide members 4 and adheres them to the back of the metal label so as to quickly find the reference. When trimming, the metal label is positioned relative to the guide hole 601 through the guide member 4 to face the laser head 3. At the same time, the negative pressure member is used to suck the metal label, and the edge of the metal label is kept away from the loading cup 6 and the negative pressure member. The four hollow cantilevers 602 are rotated by the rotating mechanism to realize alternating loading and unloading of the four workstations, each rotation is 90°, so that the edge of the metal label in the loading area is quickly delivered to the laser cutting area.

[0036] At this time, the central axis of the loading cup 6 and the three guide members 4 are used as the cutting reference, so that the laser beam can be quickly aligned with the edge of the metal sign without manual positioning in the loading area, which is conducive to shortening the positioning preparation time before trimming.

[0037] When the metal plate faces the laser head 3, the horn cup 7 is lifted by the lifting mechanism, so that the bottom of the guide 4 is immersed in the conductive coolant, and the two metal wires 501 contact the conductive coolant to conduct current, and the conductive light state of the LED light 502 indicates the arrival signal.

[0038] Then, the laser head 3 is moved by the X-axis drag chain track and the Y-axis drag chain track included in the CNC coordinate assembly 2 to align with the metal sign, and then a laser beam is emitted to the laser head 3 by the laser generator 301 and the laser constrainer on the CNC coordinate assembly 2. The laser head 3 is focused and emitted to the edge of the metal sign to cut off excess waste edges. Since the edge of the metal sign is avoided, sufficient falling space is left for the cut waste edges, and the laser beam causes the temperature of the metal sign to rise. The heat therein is transferred to the horn cup 7 along the guide 4, and part of the heat of the metal sign and the guide 4 is taken away by the volatilization of the conductive coolant, which is used to dissipate heat during trimming to prevent overheating of the negative pressure part and the metal sign.

[0039] The above is only an optional implementation of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A laser trimming machine for metal sign edges and corners, comprising a CNC coordinate assembly (2) and a cutting table (1) arranged vertically in sequence, wherein a laser head (3) is mounted on the CNC coordinate assembly (2), and characterized in that: Also includes: A guide member (4), the guide member (4) being arranged on the back of the metal sign, the guide member (4) being provided with two metal wires (501) inside, and an LED lamp (502) and a lithium battery (503) connected between the two metal wires (501); A loading cup (6), wherein a guide hole (601) cooperating with the guide member (4) and a negative pressure member for absorbing the metal plate are provided at the opening of the loading cup (6); when trimming, the metal plate is positioned relative to the guide hole (601) through the guide member (4) so ​​as to face the laser head (3), and the edge of the metal plate avoids the loading cup (6) and the negative pressure member; and the outer side of the loading cup (6) is connected in sequence with a hollow cantilever (602) and a rotating mechanism; A bull horn cup (7), wherein a support bolt (701), a lifting platform (702) and a lifting mechanism are vertically arranged in sequence at the bottom of the bull horn cup (7); a conductive coolant is filled inside the bull horn cup (7); while positioning, the lifting mechanism lifts the bull horn cup (7) so that the bottom of the guide member (4) is soaked in the conductive coolant; the LED light (502) emits a conductive light at the bottom of the guide member (4) to indicate a signal of position; and the volatilization of the conductive coolant takes away part of the heat of the metal plate and the guide member (4) for heat dissipation during trimming.

2. The metal sign edge laser trimming machine according to claim 1, characterized in that: An alloy ring (8) is arranged between the tops of the guide members (4); a stabilizing ring (801) is integrally mounted on the bottom surface of the alloy ring (8); an annular groove (605) adapted to the stabilizing ring (801) is provided on the top surface of the loading cup (6); when positioning the metal plate, the stabilizing ring (801) is dropped through the alloy ring (8) to engage with the annular groove (605) to horizontally limit the metal plate.

3. The metal sign edge laser trimming machine according to claim 2, characterized in that: The top surface of the alloy ring (8) is provided with a glue storage groove (402) and a glue extraction port (403) connected to the glue storage groove (402); a magnetic block (404) is embedded in the inner wall of the glue extraction port (403); and a pulling wire (405) extending from the alloy ring (8) is fixed on the top of the magnetic block (404).

4. The metal sign edge laser trimming machine according to claim 1, characterized in that: Both sides of the guide member (4) are provided with wire grooves (504) for accommodating the metal wire (501), and the interior of the guide member (4) is provided with a lamp placement groove (505) and a receiving groove (506) which are both in communication with the wire groove (504), wherein the lamp placement groove (505) is used to place an LED lamp (502), and the receiving groove (506) is used to place a lithium battery (503).

5. The metal sign edge laser trimming machine according to claim 1, characterized in that: The negative pressure member comprises an electric suction cup (604) and an elastic member (603) vertically mounted at the opening of the loading cup (6); the end of the electric suction cup (604) vertically passes through the middle of the loading cup (6); when the metal plate is sucked, the elastic member (603) is pressed downward, so that the bottom of the guide member (4) passes through the guide hole (601).

6. The metal sign edge laser trimming machine according to claim 5, characterized in that: The rotating mechanism comprises a hollow tube (9) and a servo motor (10) arranged at intervals at the bottom of the cutting table (1); a driving gear ring (901) is fixed to the bottom of the hollow tube (9); the top is fixedly connected to one end of the hollow cantilever (602); and a driving gear (902) meshing with teeth of the driving gear ring (901) is fixed to the output end of the servo motor (10).

7. The metal sign edge laser trimming machine according to claim 6, characterized in that: The interior of the hollow tube (9) is vertically connected in sequence with a main air pipe (11), a rotary joint (12) and a branch pipe (13), wherein one end of the main air pipe (11) away from the rotary joint (12) passes through the lower opening of the hollow tube (9), the rotary joint (12) is rotatably mounted on the inner wall of the hollow tube (9), an electric valve (14) is mounted on the branch pipe (13), and one end of the branch pipe (13) away from the rotary joint (12) is connected to the end of the electric suction cup (604).

8. The metal sign edge laser trimming machine according to claim 7, characterized in that: The lifting mechanism comprises an electric push rod (17) installed at the bottom of the cutting table (1) and separated from the hollow tube (9); a metal carrier plate (18) and a side flange plate (19) connected to the outside of the metal carrier plate (18) are installed at the output end of the electric push rod (17); the electric push rod (17) is connected to the bottom of the hollow cantilever (602) via the side flange plate (19).

9. The metal sign edge laser trimming machine according to claim 1, characterized in that: A material waiting area (15) with a side open and a bracket (16) located in the material waiting area (15) are arranged outside the cutting table (1), and the bracket (16) is used to place a metal label.

10. The metal sign edge laser trimming machine according to claim 1, characterized in that: The support bolt (701) is externally sleeved with an elastic bushing (606), and a positioning tube (607) that is plugged into the support bolt (701) is fixed to the top surface of the lifting platform (702). When the support bolt (701) is inserted into the positioning tube (607), the horn cup (7) performs buffering by compressing the elastic bushing (606).

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