Automatic laser engraving machine for electronic products and machining method of automatic laser engraving machine

Abstract

The invention relates to the technical field of laser engraving, in particular to an automatic laser engraving machine for electronic products and a machining method of the automatic laser engraving machine. The emitter assembly comprises a row of laser emitters emitting laser beams with different thicknesses, absorption rings correspondingly distributed below the laser emitters, curved flat pipes fixed to the back faces of the laser emitters, light switches electrically connected with the back faces of the laser emitters, and valve assemblies arranged on one sides of the curved flat pipes and used for channel plugging. The laser engraving machine comprises a row of curved flat pipes, a row of laser emitters used for emitting laser, a shaft set used for controlling a row of valve integration selection operation, a main pipe fixedly communicated with one ends of the row of curved flat pipes, a conveying box fixedly communicated with one end of the main pipe, and an air pressure device distributed in the conveying box and used for variable-pressure ventilation. And laser beams emitted by the laser emitters are different in thickness.

Description

Technical Field

[0001] The invention relates to the technical field of laser engraving, in particular to an automatic laser engraving machine for electronic products and a processing method thereof. Background Art

[0002] Laser engraving machines can improve engraving efficiency, make the surface of the engraved area smooth and round, quickly reduce the temperature of the non-metallic material being engraved, and reduce the deformation and internal stress of the engraved object. According to the different laser light sources, they can be divided into CO2 non-metallic laser engraving machines and optical fiber metal engraving machines. When the plastic shell of electronic products is laser engraved, the plastic shell is partially heated and decomposed during the laser engraving process to produce odor. Plastics will undergo chemical changes at high temperatures and release some volatile organic compounds. These compounds include but are not limited to formaldehyde, benzene and toluene, etc. These substances have a pungent odor.

[0003] In addition, during laser engraving, the thickness of the laser beam affects the engraving effect of the electronic product shell to a certain extent. After a thicker laser beam irradiates the electronic product shell, more odorous air will be generated in a short period of time. Based on the research and development purpose of automatically adjusting the odor absorption intensity, the present invention provides an automatic laser engraving machine for electronic products and a processing method thereof. Summary of the invention

[0004] The object of the present invention is to provide an automatic laser engraving machine for electronic products and a processing method thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic laser engraving machine for electronic products, comprising a transmitter assembly and a machine tool supporting the spatial movement of the transmitter assembly, wherein the transmitter assembly comprises a row of laser transmitters emitting laser beams of different thicknesses, an absorption ring correspondingly distributed under each laser transmitter, a curved flat tube fixed on the back of each laser transmitter, an opener electrically connected to the back of each laser transmitter, a valve integration for channel blocking arranged on one side of each curved flat tube, an axis group for controlling the selection operation of an exhaust valve integration, a main pipe fixedly connected to one end of a row of curved flat tubes, a conveying box fixedly connected to one end of the main pipe, and an air pressure device for variable pressure ventilation distributed in the conveying box, and the axis group and the air pressure device are transmission-connected, an exhaust port is opened on the conveying box, and the valve integration when the curved flat tube channel is opened also controls the circuit connection in the opener, and the other end of the curved flat tube is fixedly connected to the absorption ring.

[0006] The absorption ring is in the shape of an arc-shaped plate box, and a plurality of air holes are arranged in a ring on the bottom shell of the arc-shaped plate box. The shaft group includes a shift shaft, a row of cam seats fixed on the shift shaft, a V-shaped plate arranged on one side of each cam seat, and an S-shaped spring piece connected between the cam seat and the V-shaped plate. The V-shaped plate and the cam seat cooperate to form a telescopic cam, and one end of the V-shaped plate is slidably inserted into a groove opened on the cam seat.

[0007] The valve integration includes a door panel, an insulating plate vertically fixed on one side of the door panel, a pull-back spring connected to the other side of the door panel, and a delay box arranged at one end of the door panel. The other end of the door panel is slidably inserted into a flat cylinder vertically fixed on the curved flat tube, and the door panel blocks the channel by inserting into the curved flat tube. The telescopic cam pushes the insulating plate by rotating, and one end of the pull-back spring is fixed on the flat cylinder of the curved flat tube.

[0008] The delay box includes a square cylindrical shell with one end inserted by a door panel, a wall panel fixed to the other end of the square cylindrical shell, and a door spring covering one side of a square hole in the wall panel. One end of the door spring is fixed to the wall panel, and the wall panel is also provided with fine holes for air in the square cylindrical shell to leak out. The square cylindrical shell is fixed and supported by a horizontal plate on the curved flat tube.

[0009] The opener includes a straight conductive plate fixed on an insulating plate, two symmetrical U-shaped conductive plates arranged on one side of the straight conductive plate, and a limit frame for supporting the two U-shaped conductive plates. One end of the limit frame is fixed on the laser emitter, and the straight conductive plate realizes circuit connectivity of the laser emitter by contacting the two U-shaped conductive plates.

[0010] The opener also includes an incoming wire, an intermediate transmission wire and a loop wire. One end of the incoming wire is connected to a U-shaped conductive sheet, one end of the intermediate transmission wire is connected to another U-shaped conductive sheet, the other end of the intermediate transmission wire is electrically connected to the laser emitter, and one end of the loop wire is also electrically connected to the laser emitter.

[0011] The wind pressure device includes a T-shaped frame fixed on the conveying box, a fan shaft supported by one end of the T-shaped frame, a fan group arranged on the fan shaft, and a transformer group supported by the other end of the T-shaped frame. The transformer group establishes a transmission between the shift shaft and the fan group. The fan shaft and the shift shaft are respectively movably connected in two through holes opened on the T-shaped frame. A through hole for the shift shaft and the fan shaft to pass through is opened on the conveying box shell.

[0012] The transformer group includes a ring plate gear fixed on the shift shaft, a worm driven by one side of the ring plate gear, and an L-shaped regulating plate driven by one side of the worm. One end of the worm is connected to the ring plate gear through a meshing transmission connection with a fixed gear, and the L-shaped regulating plate is connected to the helical teeth on the worm by a row of teeth. One end of the L-shaped regulating plate slides through a prismatic hole opened on the T-shaped plate frame, and the other end of the L-shaped regulating plate is placed on the fan group.

[0013] The fan group includes a plurality of blades evenly arranged around the fan shaft, a blade shaft fixed at one end of each blade, a pressure plate driven at one side of each blade shaft, a limiting ring body fixed vertically to all the pressure plates, and a unit frame for supporting the blade shaft, the limiting ring body is arranged on the outside of the fan shaft, the blade shaft is meshed and driven by a row of teeth and grooves provided on the pressure plate through a fixed annular gear, the unit frame is fixed on the fan shaft, the blade shaft is movably sleeved in a circular hole provided on the unit frame, and the pressure plate slides through a square hole provided on the unit frame, and an outer edge of one side of the limiting ring body is inserted into an arc-shaped slide groove provided on the L-shaped control plate.

[0014] An automatic laser engraving machine processing method for electronic products comprises the following steps:

[0015] Step 1: Fix the electronic product shell on the laser engraving station, move the transmitter assembly above the electronic product shell, and a single laser transmitter in the transmitter assembly emits a laser beam, which is irradiated on the electronic product shell for engraving. After the engraving is completed, another laser transmitter is automatically replaced for secondary engraving. Laser beams of different thicknesses are irradiated on the same area or different areas on the electronic product shell to achieve multi-level or multi-size laser engraving effects on the electronic product shell;

[0016] Step 2: When a single laser emitter is performing laser engraving, the absorption ring around the laser beam absorbs the odor emitted during the engraving operation. When a new laser emitter is replaced to continue laser engraving, the absorption ring under the new laser emitter starts to automatically absorb the odor, and the previous absorption ring automatically stops absorbing air.

[0017] Step 3: The laser beam emitted by each laser transmitter has different thickness. The suction force of the absorption ring around the thick laser beam is automatically enhanced, effectively absorbing more odorous air generated by the thick laser beam engraving.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Compared with the traditional laser engraving in which a single laser emitter completes the engraving operation, the present invention adopts a row of laser emitters to perform complex engraving to meet the engraving processing requirements of the electronic product shell. Each laser emitter emits a laser beam of different thickness. The suction force of the absorption ring corresponding to the thick laser beam is automatically enhanced, while the suction force of the absorption ring corresponding to the thin laser beam is reduced. This ensures that the odorous air is effectively absorbed while meeting the concept of energy saving and emission reduction of the laser engraving machine.

[0020] 2. The present invention switches different laser emitters to be powered on by rotating the shift shaft. The corresponding curved flat tube channel on one side of the laser emitter is automatically opened, and the other curved flat tube channels are closed. In this way, the absorption ring corresponding to the laser emitter that is powered on to emit the laser beam will absorb the external odorous air and transport it away through a smooth path, thereby improving the environmental air for laser engraving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 Schematic diagram of the laser transmitter location.

[0023] Figure 3 This is a schematic diagram of the position of the curved flat tube.

[0024] Figure 4 It is a schematic diagram of the conveyor box structure.

[0025] Figure 5 This is a schematic diagram of the location of the wind pressure device.

[0026] Figure 6 This is a schematic diagram of the shaft group structure.

[0027] Figure 7 Schematic diagram of valve integration structure.

[0028] Figure 8 Schematic diagram of the delay box structure.

[0029] Fig. 9 Schematic diagram of the V-shaped plate structure.

[0030] Fig.10 This is a schematic diagram of the light opener structure.

[0031] Fig.11 This is a schematic diagram of the electrical port structure of the laser transmitter.

[0032] Fig.12 It is a schematic diagram of the wind pressure device structure.

[0033] Fig.13 This is a schematic diagram of the transformer group structure.

[0034] Fig.14 This is a schematic diagram of the fan group structure.

[0035] In the figure: transmitter assembly 1, machine tool 2, laser transmitter 3, absorption ring 4, curved flat tube 5, valve integration 6, opener 7, main pipe 8, conveying box 9, wind pressure device 10, shaft group 11, V-shaped plate 12, S-shaped spring 13, cam seat 14, shift shaft 15, pull-back spring 16, door plate 17, insulating plate 18, delay box 19, wall panel 20, door spring 21, square cylinder shell 22, inlet wire 23, limit frame 24, U-shaped conductive sheet 25, straight conductive sheet 26, intermediate transmission wire 27, return wire 28, transformer group 29, T-shaped plate frame 30, fan group 31, fan shaft 32, L-shaped control plate 33, worm 34, ring plate gear 35, blade 36, blade shaft 37, limit ring body 38, unit frame 39, pressure plate 40. DETAILED DESCRIPTION

[0036] 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 technical solutions in 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.

[0037] See also Figures 1 to 14 The present invention provides a technical solution: an automatic laser engraving machine for electronic products, comprising a transmitter assembly 1, and a machine tool 2 supporting the transmitter assembly 1 to move in space, wherein the transmitter assembly 1 comprises a row of laser transmitters 3 emitting laser beams of different thicknesses, an absorption ring 4 correspondingly distributed below each laser transmitter 3, a curved flat tube 5 fixed on the back of each laser transmitter 3, an opener 7 electrically connected to the back of each laser transmitter 3, a valve integration 6 for channel blocking arranged on one side of each curved flat tube 5, an axis group 11 for controlling a row of valve integrations 6 to select an operation, a main pipe 8 fixedly connected to one end of a row of curved flat tubes 5, a conveying box 9 fixedly connected to one end of the main pipe 8, and an air pressure device 10 for variable pressure ventilation distributed in the conveying box 9, and the axis group 11 and the air pressure device 10 are transmission-connected, an exhaust port is opened on the conveying box 9, and the valve integration 6 when the channel of the curved flat tube 5 is opened also controls the circuit connection in the opener 7, and the other end of the curved flat tube 5 is fixedly connected to the absorption ring 4.

[0038] The absorption ring 4 is shaped as an arc-shaped plate box, and a plurality of air holes are arranged on the upper ring of the bottom shell of the arc-shaped plate box. The shaft group 11 includes a shift shaft 15, a row of cam seats 14 fixed on the shift shaft 15, a V-shaped plate 12 arranged on one side of each cam seat 14, and an S-shaped spring piece 13 connected between the cam seat 14 and the V-shaped plate 12. The V-shaped plate 12 and the cam seat 14 cooperate to form a telescopic cam, and one end of the V-shaped plate 12 is slidably inserted into the groove opened on the cam seat 14.

[0039] refer to Figure 7It is understood that the valve integration 6 includes a door panel 17, an insulating plate 18 vertically fixed on one side of the door panel 17, a pull-back spring 16 connected to the other side of the door panel 17, and a delay box 19 arranged at one end of the door panel 17, the other end of the door panel 17 is slidably inserted into the flat cylinder vertically fixed on the curved flat tube 5, and the door panel 17 blocks the channel by inserting into the curved flat tube 5, the telescopic cam pushes the insulating plate 18 by rotating, and one end of the pull-back spring 16 is fixed on the flat cylinder of the curved flat tube 5.

[0040] refer to Figure 8 It is understood that the delay box 19 includes a square cylindrical shell 22 with one end inserted by the door panel 17, a wall panel 20 fixed to the other end of the square cylindrical shell 22, and a door spring piece 21 covering one side of the square hole opened on the wall panel 20. One end of the door spring piece 21 is fixed to the wall panel 20, and the wall panel 20 is also provided with a fine hole for the air in the square cylindrical shell 22 to leak out. The square cylindrical shell 22 is fixed and supported by a horizontal plate on the curved flat tube 5.

[0041] refer to Fig.10 It is understood that the opener 7 includes a straight conductive plate 26 fixed on the insulating plate 18, two symmetrical U-shaped conductive plates 25 are arranged on one side of the straight conductive plate 26, and a limit frame 24 for supporting the two U-shaped conductive plates 25, one end of the limit frame 24 is fixed on the laser emitter 3, and the straight conductive plate 26 realizes circuit connectivity of the laser emitter 3 by contacting with the two U-shaped conductive plates 25.

[0042] The opener 7 also includes an incoming wire 23, an intermediate transmission wire 27 and a loop wire 28. One end of the incoming wire 23 is connected to a U-shaped conductive sheet 25, one end of the intermediate transmission wire 27 is connected to another U-shaped conductive sheet 25, the other end of the intermediate transmission wire 27 is electrically connected to the laser emitter 3, and one end of the loop wire 28 is also electrically connected to the laser emitter 3.

[0043] The wind pressure device 10 includes a T-shaped frame 30 fixed on the conveying box 9, a fan shaft 32 supported by one end of the T-shaped frame 30, a fan group 31 arranged on the fan shaft 32, and a transformer group 29 supported by the other end of the T-shaped frame 30. The transformer group 29 establishes transmission between the shift shaft 15 and the fan group 31. The fan shaft 32 and the shift shaft 15 are respectively movably connected in two through holes opened on the T-shaped frame 30. A through hole is opened on the shell of the conveying box 9 for the shift shaft 15 and the fan shaft 32 to pass through.

[0044] The transformer group 29 includes a ring plate gear 35 fixedly sleeved on the shift shaft 15, a worm 34 driven by one side of the ring plate gear 35, and an L-shaped regulating plate 33 driven by one side of the worm 34. One end of the worm 34 is meshed and connected to the ring plate gear 35 through a fixed gear. The L-shaped regulating plate 33 is meshed and connected to the helical teeth on the worm 34 by a row of teeth. One end of the L-shaped regulating plate 33 slides through the prismatic hole opened on the T-shaped plate frame 30, and the other end of the L-shaped regulating plate 33 is placed on the fan group 31.

[0045] The fan group 31 includes a plurality of blades 36 evenly arranged around the fan shaft 32, a blade shaft 37 fixed at one end of each blade 36, a pressure plate 40 driven at one side of each blade shaft 37, a limiting ring body 38 fixed vertically to all the pressure plates 40, and a unit frame 39 for supporting the blade shaft 37. The limiting ring body 38 is arranged on the outside of the fan shaft 32, and the blade shaft 37 is meshed and driven by a row of teeth and grooves opened on the fixed annular gear and the pressure plate 40. The unit frame 39 is fixed on the fan shaft 32, and the blade shaft 37 is movably sleeved in the circular hole opened in the unit frame 39, and the pressure plate 40 slides through the square hole opened in the unit frame 39, and the outer edge of one side of the limiting ring body 38 is stuck in the arc-shaped slide groove opened on the L-shaped control plate 33.

[0046] An automatic laser engraving machine processing method for electronic products comprises the following steps:

[0047] Step 1: Fix the electronic product shell on the laser engraving station, and the transmitter assembly 1 moves above the electronic product shell. The single laser transmitter 3 in the transmitter assembly 1 emits a laser beam, and the laser beam is irradiated on the electronic product shell for engraving. After the engraving is completed, another laser transmitter 3 is automatically replaced for secondary engraving. Laser beams of different thicknesses are respectively irradiated on the same area or different areas on the electronic product shell to achieve multi-level or multi-size laser engraving effects on the electronic product shell;

[0048] Step 2: During the laser engraving process of a single laser emitter 3, the absorption ring 4 arranged around the laser beam absorbs the odor volatilized during the engraving operation. A new laser emitter 3 is replaced to continue laser engraving. The absorption ring 4 under the new laser emitter 3 starts to automatically absorb the odor, and the previous absorption ring 4 automatically stops absorbing air;

[0049] Step 3: The laser beam emitted by each laser emitter 3 is of different thickness. The suction force of the absorption ring 4 around the thick laser beam is automatically enhanced, and more odorous air generated by the thick laser beam engraving is effectively absorbed.

[0050] The shift shaft 15 is externally connected to a driving mechanism in the prior art to control the rotation of the shift shaft 15. The rotation range of the shift shaft 15 does not exceed one circle. The shift shaft 15 drives the telescopic cam composed of the V-shaped plate 12 and the cam seat 14 to rotate. Figure 7 When the telescopic cam presses against the insulating plate 18, the corresponding laser emitter 3 will be powered on to emit the laser beam, and the absorption ring 4 below the laser emitter 3 will absorb air. Fig. 9It is understood that the shift shaft 15 rotates to control all the retracting cams to rotate synchronously, and only one retracting cam is against the insulating plate 18 at a time, so only one laser emitter 3 is powered on and working at a time. Different laser emitters 3 are switched to work by rotating the shift shaft 15. The laser emitter 3 is a prior art instrument.

[0051] The inlet conductor 23 and the return conductor 28 are externally connected to the power supply in the prior art. When the telescopic cam presses against the insulating plate 18, the straight conductive sheet 26 fixed on the insulating plate 18 translates and contacts with the two U-shaped conductive sheets 25, so that the circuit in the opener 7 is unblocked, and the laser emitter 3 is powered on. At the same time, the insulating plate 18 drives the door panel 17, and the door panel 17 is pulled out from the local section of the curved flat tube 5, so that the channel of the curved flat tube 5 is opened, while the other channels of the curved flat tube 5 are blocked. Therefore, the odor discharge path corresponding to the laser emitter 3 engraved by the laser is set. Specifically, the absorption ring 4 absorbs the odorous air, and then transports it to the main pipe 8 through the unblocked curved flat tube 5, and then discharges it through the conveying box 9. Here, the conveying box 9 is externally connected to the odor absorption and purification mechanism in the prior art.

[0052] The fan shaft 32 is driven by a motor in the prior art, and then the fan group 31 rotates at a constant speed to ventilate the conveying box 9. As mentioned before, different laser emitters 3 emit laser beams of different thicknesses, and thus the amount of odorous air generated during the laser engraving process is different. When a thicker laser beam is working, a stronger air intake ventilation is required. Therefore, the fan group 31 rotates at a constant speed to generate a stronger wind force. Specifically, the shift shaft 15 rotates to control the replacement of different laser emitters 3. The rotation of the shift shaft 15 will also drive the worm 34 to rotate, thereby causing the L-shaped control plate 33 to translate. The L-shaped control plate 33 drives the limit ring 38. The limit ring 38 moves axially along the fan shaft 32 to drive all the pressure plates 40 to move. Then the blade shaft 37 rotates to drive the blade 36. The inclination of the blade 36 changes. In this way, when the blade 36 moves around the fan shaft 32, although the orbiting speed remains unchanged, the amount of air pushed changes. Although the fan group 31 rotates at a constant speed, the ventilation intensity is automatically adjusted and enhanced to meet the engraving requirements of the thick laser beam.

[0053] The present invention limits the translation of the insulating plate 18 by cooperating with the telescopic cam and the delay box 19. The shift shaft 15 rotates to drive the telescopic cam, and the telescopic cam presses against the insulating plate 18. Although the insulating plate 18 will eventually show Figure 7The state shown is shown, but the insulating plate 18 is delayed in translation into place, because the insulating plate 18 and the door panel 17 move synchronously, and the process of inserting the door panel 17 into the square cylinder shell 22 is slowly carried out. The air in the square cylinder shell 22 can only be discharged through the fine holes on the wall panel 20. The delayed position of the insulating plate 18 is to prevent that when different laser emitters 3 are switched, other laser emitters 3 between the two laser emitters 3 will not be powered on to emit laser beams. The corresponding telescopic cam of the laser emitter 3 that needs to work will not move at all after it presses against the insulating plate 18, which will trigger the laser emitter 3 to be powered on. If the telescopic cam only rotates quickly to skip the insulating plate 18, the telescopic cam is not fully expanded, and the insulating plate 18 is not fully in place, it will not cause the corresponding laser emitter 3 to be powered on. Fig. 9 Only three telescopic cams are shown, corresponding to the operation of three laser emitters 3. Each telescopic cam has a different orientation. If more laser emitters 3 are arranged, when the two laser emitters 3 at the head and tail are switched, if there is no delayed position mechanism of the insulating plate 18, the multiple laser emitters 3 between the head and tail will be briefly powered on in turn to emit laser beams, which does not meet the switching requirements of laser engraving.

[0054] 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. An automatic laser engraving machine for electronic products, comprising a transmitter assembly (1), and a machine tool (2) for supporting the transmitter assembly (1) to move in space, characterized in that: The transmitter assembly (1) comprises a row of laser transmitters (3) that emit laser beams of different thicknesses, an absorption ring (4) correspondingly distributed below each laser transmitter (3), a curved flat tube (5) fixed on the back of each laser transmitter (3), an opener (7) electrically connected to the back of each laser transmitter (3), a valve assembly (6) for channel blocking arranged on one side of each curved flat tube (5), an axis group (11) for controlling the operation selection of an exhaust valve assembly (6), a main pipe (8) fixedly connected to one end of a row of curved flat tubes (5), a conveying box (9) fixedly connected to one end of the main pipe (8), and a wind pressure device (10) for variable pressure ventilation distributed in the conveying box (9), and the axis group (11) and the wind pressure device (10) are transmission-connected, the conveying box (9) is provided with an exhaust port, and when the channel of the curved flat tube (5) is opened, the valve assembly (6) also controls the circuit connection in the opener (7), and the other end of the curved flat tube (5) is fixedly connected to the absorption ring (4).

2. The automatic laser engraving machine for electronic products according to claim 1, characterized in that: The absorption ring (4) is in the shape of an arc-shaped plate box, and a plurality of air holes are arranged on the bottom shell of the arc-shaped plate box. The shaft group (11) comprises a shift shaft (15), a row of cam seats (14) fixed on the shift shaft (15), a V-shaped plate (12) arranged on one side of each cam seat (14), and an S-shaped spring piece (13) connected between the cam seat (14) and the V-shaped plate (12). The V-shaped plate (12) and the cam seat (14) cooperate to form a telescopic cam, and one end of the V-shaped plate (12) is slidably inserted into a groove provided on the cam seat (14).

3. The automatic laser engraving machine for electronic products according to claim 2, characterized in that: The valve assembly (6) comprises a door panel (17), an insulating plate (18) vertically fixed on one side of the door panel (17), a retractable spring sheet (16) connected to the other side of the door panel (17), and a delay box (19) arranged at one end of the door panel (17); the other end of the door panel (17) is slidably inserted into a flat cylinder vertically fixed on the curved flat tube (5), and the door panel (17) blocks the passage by being inserted into the curved flat tube (5); the telescopic cam pushes the insulating plate (18) by rotating, and one end of the retractable spring sheet (16) is fixed on the flat cylinder of the curved flat tube (5).

4. The automatic laser engraving machine for electronic products according to claim 3, characterized in that: The delay box (19) comprises a square cylindrical shell (22) with one end inserted by the door panel (17), a wall panel (20) to which the other end of the square cylindrical shell (22) is fixed, and a door spring (21) covering one side of the square hole provided on the wall panel (20), wherein one end of the door spring (21) is fixed on the wall panel (20), and a fine hole is provided on the wall panel (20) for air in the square cylindrical shell (22) to leak out. The curved flat tube (5) is fixedly supported by a horizontal plate provided on the square cylindrical shell (22).

5. The automatic laser engraving machine for electronic products according to claim 3, characterized in that: The opener (7) comprises a straight conductive sheet (26) fixed on an insulating plate (18), two symmetrical U-shaped conductive sheets (25) arranged on one side of the straight conductive sheet (26), and a limit frame (24) for supporting the two U-shaped conductive sheets (25), one end of the limit frame (24) being fixed on the laser emitter (3), and the straight conductive sheet (26) realizes circuit connection of the laser emitter (3) by contacting the two U-shaped conductive sheets (25).

6. The automatic laser engraving machine for electronic products according to claim 5, characterized in that: The opener (7) also includes an incoming wire (23), an intermediate wire (27) and a return wire (28), one end of the incoming wire (23) is connected to a U-shaped conductive sheet (25), one end of the intermediate wire (27) is connected to another U-shaped conductive sheet (25), the other end of the intermediate wire (27) is electrically connected to the laser emitter (3), and one end of the return wire (28) is also electrically connected to the laser emitter (3).

7. The automatic laser engraving machine for electronic products according to claim 2, characterized in that: The wind pressure device (10) comprises a T-shaped frame (30) fixed on the conveying box (9), a fan shaft (32) supported by one end of the T-shaped frame (30), a fan group (31) arranged on the fan shaft (32), and a transformer group (29) supported by the other end of the T-shaped frame (30). The transformer group (29) establishes transmission between the shift shaft (15) and the fan group (31). The fan shaft (32) and the shift shaft (15) are respectively movably sleeved in two through holes opened on the T-shaped frame (30). A through hole for the shift shaft (15) and the fan shaft (32) to pass through is opened on the shell of the conveying box (9).

8. The automatic laser engraving machine for electronic products according to claim 7, characterized in that: The transformer group (29) comprises a ring plate gear (35) fixedly sleeved on the shift shaft (15), a worm (34) driven by one side of the ring plate gear (35), and an L-shaped regulating plate (33) driven by one side of the worm (34); one end of the worm (34) is meshed and driven with the ring plate gear (35) through a fixed gear; a row of teeth is arranged on the L-shaped regulating plate (33) and meshed and driven with the helical teeth on the worm (34); one end of the L-shaped regulating plate (33) slides through a prism hole provided on the T-shaped plate frame (30); and the other end of the L-shaped regulating plate (33) rests on the fan group (31).

9. The automatic laser engraving machine for electronic products according to claim 8, characterized in that: The fan group (31) comprises a plurality of blades (36) uniformly arranged around the fan shaft (32), a blade shaft (37) fixed at one end of each blade (36), a pressure plate (40) driven at one side of each blade shaft (37), a limiting ring body (38) vertically fixed to all the pressure plates (40), and a unit frame (39) for supporting the blade shaft (37). The limiting ring body (38) is arranged around the outside of the fan shaft (32). The blade shaft (37) is meshed and driven with a row of teeth and grooves provided on the pressure plate (40) through a fixed annular gear. The unit frame (39) is fixed on the fan shaft (32). The blade shaft (37) is movably sleeved in a circular hole provided on the unit frame (39). The pressure plate (40) slides through a square hole provided on the unit frame (39). The outer edge of one side of the limiting ring body (38) is inserted into an arc-shaped sliding groove provided on the L-shaped regulating plate (33).

10. An automatic laser engraving machine processing method for electronic products, using the automatic laser engraving machine for electronic products according to claim 1, characterized in that: The following steps are involved: Step 1: fix the electronic product shell on the laser engraving station, the transmitter assembly (1) moves above the electronic product shell, and a single laser transmitter (3) in the transmitter assembly (1) emits a laser beam, which is irradiated on the electronic product shell for engraving. After the engraving is completed, another laser transmitter (3) is automatically replaced for secondary engraving. Laser beams of different thicknesses are respectively irradiated on the same area or different areas on the electronic product shell, so as to achieve a multi-level or multi-size laser engraving effect on the electronic product shell; Step 2: When a single laser emitter (3) performs laser engraving, an absorption ring (4) arranged around the laser beam absorbs the odor emitted during the engraving operation. When a new laser emitter (3) is replaced to continue laser engraving, the absorption ring (4) below the new laser emitter (3) starts to automatically absorb the odor, and the previous absorption ring (4) automatically stops absorbing air; Step 3: The laser beams emitted by each laser emitter (3) are of different thicknesses, and the suction force of the absorption ring (4) around the thick laser beam is automatically enhanced, effectively absorbing more odorous air generated by the thick laser beam engraving.

Images