High-precision laser printing device

Abstract

The high-precision laser lettering device comprises a machine body, a lettering cavity is formed in the upper portion of the machine body, a lifting base is installed in the lettering cavity through a lifting mechanism, and a downward laser head is arranged at the front end of the lifting base; a reciprocating type feeding mechanism with a placing station and a printing station is arranged in the lettering cavity, a plurality of cooling air pipes attached to the periphery of the laser device and the periphery of the optical device are arranged in the laser head, and the air inlet ends of the cooling air pipes are arranged outside the laser head. Gas in the cooling air pipe is pumped away through the preheating mechanism, the gas flowing in the cooling air pipe takes away heat of the laser device and the optical device and heats the laser device and the optical device, the heated air is further heated in the preheating mechanism, the gas with the needed temperature is obtained, the printing face of a workpiece is preheated, and the printing face of the workpiece is heated. In this way, waste heat recycling is achieved, energy consumption during preheating is reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to laser printing, in particular to a high-precision laser printing device. Background Art

[0002] A laser printer is a device that can mark the surface of an object. Its principle is to use the high temperature generated by the laser beam to cause different degrees of ablation on the surface of the material to achieve the purpose of leaving marks, text or patterns. Among them, the high-precision laser printing device is a type of laser printing, which supports micron-level printing accuracy and is suitable for complex patterns and small text. When the high-precision laser printing device is performing laser printing, in order to ensure a better printing effect, it is usually necessary to use a preheating device to preheat the printing surface of the metal workpiece. The existing method is to preheat by setting up a preheating mechanism, which increases energy consumption. Summary of the invention

[0003] In order to solve the defects of the prior art, the present invention provides a high-precision laser printing device.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The invention discloses a high-precision laser printing device, comprising a machine body, wherein a printing cavity is arranged on the upper part of the machine body, and a lifting seat is installed on the printing cavity via a lifting mechanism, and a downward laser head is arranged at the front end of the lifting seat;

[0006] The printing cavity is provided with a reciprocating feeding mechanism having a placing station and a printing station, the laser head is provided with a plurality of cooling air ducts attached to the periphery of the laser and the periphery of the optical device, and the air inlet end of the cooling air duct is arranged outside the laser head, and the cooling air duct is a metal pipe;

[0007] The printing chamber is provided with a preheating mechanism for preheating the printing surface of the workpiece above the placement station, and the air inlet end of the preheating mechanism is connected to the air outlet end of the cooling air duct via a heat-insulating air duct;

[0008] The gas in the cooling duct is extracted through the preheating mechanism, and the gas flowing in the cooling duct takes away the heat of the laser and optical devices and heats up the air. The heated air is further heated in the preheating mechanism to obtain the gas at the required temperature, and the printing surface of the workpiece is preheated. The preheated workpiece is sent to the printing station through the reciprocating feeding mechanism, and the laser head is used for printing.

[0009] As a preferred technical solution of the present invention, the reciprocating feeding mechanism includes a base plate arranged in the printing cavity, a pair of first limit guide rails arranged in parallel are provided on the base plate, a second limit guide rail is provided between the first limit guide rails, and a first sliding block moving along the first limit guide rail is provided on the first limit guide rail, and a second sliding block moving along the second limit guide rail is provided on the second limit guide rail, and a first bracket is installed between the first sliding blocks, a first mounting seat is provided between the first brackets, a second bracket is installed between the second sliding blocks, and a base frame is installed between the tops of the second brackets, and the length of the first bracket is greater than the length of the second bracket, and a vertically upward telescopic cylinder is provided on the base frame, and a second mounting seat is provided at the telescopic end of the telescopic cylinder, and a reciprocating mechanism for driving the first mounting seat and the second mounting seat to perform cross reciprocating motion is also provided on the base plate.

[0010] As a preferred technical solution of the present invention, both the first mounting seat and the second mounting seat are provided with a positioning mechanism for positioning the workpiece.

[0011] As a preferred technical solution of the present invention, the reciprocating mechanism includes a pair of pulleys arranged on the base plate, located between the first limit guide rail and the second limit guide rail, and distributed at both end portions of the first limit guide rail, and a synchronous belt is installed between the pulleys, and one side of the synchronous belt is fixedly connected to the first sliding block via a positioning member, and the other side of the synchronous belt is fixedly connected to the second sliding block via a positioning member, and a servo motor for driving one of the pulleys to rotate is provided on the machine body.

[0012] As a preferred technical solution of the present invention, the preheating mechanism includes a positioning frame arranged in the printing cavity and located above the placement station, the positioning frame is provided with a vertically downward electric telescopic rod, and the end of the electric telescopic rod is provided with a lifting platform, the bottom of the lifting platform is provided with a sealing cover for covering the surface to be printed of the workpiece, the bottom of the sealing cover is an opening, the sealing cover is provided with an air inlet pipe, and the end of the air inlet pipe is provided with a fan, and the air inlet end of the fan is provided with an air heater, and the air inlet end of the air heater is connected to the air outlet end of the cooling air duct.

[0013] As a preferred technical solution of the present invention, a first temperature sensor is provided at the air inlet end of the air heater, and a second temperature sensor is provided at the air outlet end of the air heater, and a third temperature controller is provided in the sealing cover, and a controller is provided on the lifting platform, and the first temperature sensor, the second temperature sensor, the third temperature sensor, the air heater and the fan are all connected to the controller.

[0014] As a preferred technical solution of the present invention, a spring seat is arranged between the sealing cover and the mounting seat.

[0015] As a preferred technical solution of the present invention, an air outlet plate is provided inside the sealing cover, and the air outlet plate is provided with a plurality of air outlet nozzles facing the surface to be printed.

[0016] As a preferred technical solution of the present invention, a plurality of air outlet holes are provided on the circumferential side of the upper end of the sealing cover.

[0017] The beneficial effects of the present invention are:

[0018] 1. This high-precision laser printing device extracts the gas in the cooling duct through the preheating mechanism, and the gas flowing in the cooling duct takes away the heat of the laser and optical devices and heats up the temperature. The heated air is further heated in the preheating mechanism to obtain the gas at the required temperature, and the printing surface of the workpiece is preheated. The preheated workpiece is sent to the printing station through the reciprocating feeding mechanism, and the laser head is used for printing. In this way, the heat generated by the laser is used to preheat the product workpiece, thereby realizing the reuse of waste heat, reducing the energy consumption during preheating, and playing a role in energy saving.

[0019] 2. In this high-precision laser printing device, a specific reciprocating feeding mechanism is set up to perform reciprocating feeding, wherein the first mounting seat moves along the first limiting guide rail, and the second mounting seat moves along the second limiting guide rail, and the length of the first bracket is greater than the length of the second bracket, and a vertically upward telescopic cylinder is provided on the base frame, so that the telescopic cylinder drives the second mounting seat to rise and fall, and the reciprocating mechanism drives the first mounting seat and the second mounting seat to perform cross reciprocating motion without any impact.

[0020] 3. The preheating mechanism in this high-precision laser printing device drives the lifting platform to rise and fall through the electric telescopic rod when working, which makes it convenient to connect the sealing cover with the area to be printed on the workpiece. At the docking interface, the fan guides the air in the cooling air duct into the heating cavity where the sealing cover and the area to be printed are connected. The air heater further heats the hot air generated by the heat dissipation and preheats the area to be printed, thereby realizing the reuse of waste heat and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a structural schematic diagram of a high-precision laser printing device of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a reciprocating feeding mechanism of an origin positioning mechanism of a high-precision laser printing device of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a reciprocating mechanism of a high-precision laser printing device of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation of a cooling air duct of a high-precision laser printing device of the present invention;

[0026] Figure 5 The present invention is a schematic structural diagram of a preheating mechanism of a high-precision laser printing device.

[0027] In the figure: 1. machine body; 2. printing cavity; 3. lifting seat; 4. laser head; 5. reciprocating feeding mechanism; 6. cooling air duct; 7. preheating mechanism; 8. bottom plate; 9. first limit guide rail; 10. second limit guide rail; 11. first sliding block; 12. second sliding block; 13. first bracket; 14. first mounting seat; 15. second bracket; 16. bottom frame; 17. telescopic cylinder; 18. second mounting seat; 19. pulley; 20. synchronous belt; 21. electric telescopic rod; 22. lifting platform; 23. sealing cover; 24. fan; 25. air heater; 26. first temperature sensor; 27. second temperature sensor; 28. third temperature controller; 29. ​​spring seat; 30. air outlet plate; 31. air outlet nozzle; 32. air outlet hole. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present invention is a high-precision laser printing device, comprising a body 1, a printing cavity 2 is provided on the upper part of the body 1, and a lifting seat 3 is installed on the printing cavity 2 via a lifting mechanism, and a laser head 4 facing downward is provided at the front end of the lifting seat 3;

[0030] The printing cavity 2 is provided with a reciprocating feeding mechanism 5 having a placing station and a printing station, and the laser head 4 is provided with a plurality of cooling air ducts 6 attached to the periphery of the laser and the periphery of the optical device, and the air inlet end of the cooling air duct 6 is arranged outside the laser head, and the cooling air duct 6 is a metal tube;

[0031] The printing chamber 2 is provided with a preheating mechanism 7 for preheating the printing surface of the workpiece above the placement station, and the air inlet end of the preheating mechanism 7 is connected to the air outlet end of the cooling air duct 6 via a heat-insulating air duct;

[0032] The gas in the cooling air duct 6 is extracted through the preheating mechanism 7, and the gas flowing in the cooling air duct 6 takes away the heat of the laser and the optical device and heats up the temperature. The heated air is further heated in the preheating mechanism 7 to obtain the gas of the required temperature, and the printing surface of the workpiece is preheated. The preheated workpiece is sent to the printing station through the reciprocating feeding mechanism 5, and the laser head 4 is used for printing, so that the waste heat is reused, the energy consumption during preheating is reduced, and the effect of energy saving is achieved.

[0033] The reciprocating feeding mechanism 5 includes a bottom plate 8 arranged in the printing cavity 2, a pair of first limit guide rails 9 arranged in parallel are arranged on the bottom plate 6, a second limit guide rail 10 is arranged between the first limit guide rails 9, and a first sliding block 11 moving along the first limit guide rail 9 is arranged on the first limit guide rail 9, and a second sliding block 12 moving along the second limit guide rail 10 is arranged on the second limit guide rail 10, and a first bracket 13 is installed between the first sliding blocks 11, a first mounting seat 14 is arranged between the first brackets 13, a second bracket 15 is installed between the second sliding blocks 12, and the second bracket A base frame 16 is installed between the tops of 15, and the length of the first bracket 13 is greater than that of the second bracket 13, and a vertically upward telescopic cylinder 17 is provided on the base frame 16, and a second mounting seat 18 is provided at the telescopic end of the telescopic cylinder 17, and a reciprocating mechanism for driving the first mounting seat 14 and the second mounting seat 18 to perform cross-reciprocating motion is also provided on the bottom plate 9, so that the telescopic cylinder drives the second mounting seat to rise and fall, and the reciprocating mechanism drives the first mounting seat and the second mounting seat to perform cross-reciprocating motion without affecting each other, so that alternating work is performed, thereby having a higher working efficiency, and printing and preheating do not affect each other.

[0034] The first mounting seat 14 and the second mounting seat 18 are both provided with positioning mechanisms for positioning the workpiece, so as to avoid shaking and falling of the workpiece, thereby ensuring the stability of the workpiece.

[0035] Among them, the reciprocating mechanism includes a pair of pulleys 19 arranged on the base plate 8, located between the first limit guide rail 9 and the second limit guide rail 11, and distributed at the two end portions of the first limit guide rail 9, and a synchronous belt 20 is installed between the pulleys 19, and one side of the synchronous belt 20 is fixedly connected to the first sliding block 11 via a positioning member, and the other side of the synchronous belt 20 is fixedly connected to the second sliding block 12 via a positioning member, and a servo motor for driving one of the pulleys 19 to rotate is provided on the machine body 1, wherein the placement station and the printing station are driven alternately through the synchronous belt, and it has the characteristics of a response block.

[0036] Among them, the preheating mechanism 7 includes a positioning frame arranged in the printing cavity 2 and located above the placement station, the positioning frame is provided with a vertically downward electric telescopic rod 21, and the end of the electric telescopic rod 21 is provided with a lifting platform 22, the bottom of the lifting platform 22 is provided with a sealing cover 23 for covering the surface to be printed of the workpiece, the bottom of the sealing cover 23 is an opening, the sealing cover 23 is provided with an air inlet pipe, and the end of the air inlet pipe is provided with a fan 24, and the air inlet end of the fan 24 is provided with an air heater 25, and the air inlet end of the air heater 25 is connected to the air outlet end of the cooling air duct 6. The lifting platform 22 is driven to rise and fall by the electric telescopic rod 21, which makes it convenient to connect the sealing cover 23 with the area to be printed on the workpiece. At the docking port, the fan 24 introduces the wind in the cooling air duct 6 into the heating chamber where the sealing cover 23 and the area to be printed are connected. The air heater 25 further heats the hot air generated by the heat dissipation and preheats the area to be printed, thereby realizing the reuse of waste heat and reducing energy consumption.

[0037] The air inlet end of the air heater 25 is provided with a first temperature sensor 26, the air outlet end of the air heater 26 is provided with a second temperature sensor 27, the sealing cover 23 is provided with a third temperature controller 28, and the lifting platform 22 is provided with a controller, and the first temperature sensor 26, the second temperature sensor 27, the third temperature sensor 28, the air heater 25 and the fan 24 are all connected to the controller. In this way, the air inlet temperature, the air outlet temperature and the internal heating temperature of the sealing cover are detected, and the fan and the air heater are conveniently controlled, so as to have a better preheating effect.

[0038] A spring seat 29 is provided between the sealing cover 23 and the mounting seat, so that the sealing cover and the workpiece are in elastic contact, thereby having a better sealing effect.

[0039] The sealing cover 23 is provided with an air outlet plate 30 inside, and the air outlet plate 30 is provided with a plurality of air outlet nozzles 31 facing the surface to be printed, so that the printing area can be omnidirectionally ventilated.

[0040] A plurality of air outlet holes 32 are provided around the upper end of the sealing cover 23, wherein the air outlet holes 32 can be connected to the air inlet end of the fan, thereby realizing partial circulation.

[0041] When working, this high-precision laser printing device extracts the gas in the cooling air duct 6 through the preheating mechanism 7, and the gas flowing in the cooling air duct 6 takes away the heat of the laser and the optical device and heats up the temperature. The heated air is further heated in the preheating mechanism 7 to obtain the gas at the required temperature, and the printing surface of the workpiece is preheated. The preheated workpiece is sent to the printing station through the reciprocating feeding mechanism 5, and the laser head 4 is used for printing, so that the waste heat is reused, the energy consumption during preheating is reduced, and the energy saving effect is achieved.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-precision laser printing device, characterized in that: It comprises a machine body (1), a printing cavity (2) is provided on the upper part of the machine body (1), a lifting seat (3) is installed on the printing cavity (2) via a lifting mechanism, and a downward laser head (4) is provided at the front end of the lifting seat (3); The printing cavity (2) is provided with a reciprocating feeding mechanism (5) having a placement station and a printing station, the laser head (4) is provided with a plurality of cooling air ducts (6) attached to the periphery of the laser and the periphery of the optical device, and the air inlet end of the cooling air duct (6) is arranged outside the laser head, and the cooling air duct (6) is a metal tube; The printing chamber (2) is provided with a preheating mechanism (7) for preheating the printing surface of the workpiece above the placement station, and the air inlet end of the preheating mechanism (7) is connected to the air outlet end of the cooling air duct (6) via a heat-insulating air duct; The gas in the cooling air duct (6) is extracted by the preheating mechanism (7), and the gas flowing in the cooling air duct (6) takes away the heat of the laser and the optical device and heats up the air. The heated air is further heated in the preheating mechanism (7) to obtain gas at a required temperature, and the printing surface of the workpiece is preheated. The preheated workpiece is then fed into the printing station by the reciprocating feeding mechanism (5), and then printed by the laser head (4).

2. A high-precision laser printing device according to claim 1, characterized in that: The reciprocating feeding mechanism (5) comprises a bottom plate (8) arranged in the printing cavity (2); a pair of first position limiting guide rails (9) arranged in parallel are arranged on the bottom plate (6); a second position limiting guide rail (10) is arranged between the first position limiting guide rails (9); a first sliding block (11) moving along the first position limiting guide rail (9) is arranged on the first position limiting guide rail (9); a second sliding block (12) moving along the second position limiting guide rail (10) is arranged on the second position limiting guide rail (10); a first bracket (13) is installed between the first sliding blocks (11); the ... sliding block (13) is installed between the first sliding blocks (11); the first bracket (13) is installed between the first sliding blocks (11); the first sliding block (13) is installed between the first sliding blocks (11); the first bracket (13) is installed 3), a first mounting seat (14) is arranged between the second sliding blocks (12), a second bracket (15) is arranged between the second sliding blocks (12), a bottom frame (16) is arranged between the tops of the second brackets (15), the length of the first bracket (13) is greater than the length of the second bracket (13), a telescopic cylinder (17) extending vertically upward is arranged on the bottom frame (16), a second mounting seat (18) is arranged at the telescopic end of the telescopic cylinder (17), and a reciprocating mechanism for driving the first mounting seat (14) and the second mounting seat (18) to perform cross reciprocating motion is also arranged on the bottom plate (9).

3. A high-precision laser printing device according to claim 2, characterized in that: The first mounting seat (14) and the second mounting seat (18) are both provided with positioning mechanisms for positioning the workpiece.

4. A high-precision laser printing device according to claim 2, characterized in that: The reciprocating mechanism comprises a pair of pulleys (19) arranged on a base plate (8) between a first limiting guide rail (9) and a second limiting guide rail (11), and distributed at both ends of the first limiting guide rail (9), and a synchronous belt (20) is installed between the pulleys (19), and one side of the synchronous belt (20) is fixedly connected to the first sliding block (11) via a positioning member, and the other side of the synchronous belt (20) is fixedly connected to the second sliding block (12) via a positioning member, and a servo motor for driving one of the pulleys (19) to rotate is provided on the machine body (1).

5. A high-precision laser printing device according to claim 1, characterized in that: The preheating mechanism (7) comprises a positioning frame arranged in the printing cavity (2) and located above the placement station, the positioning frame is provided with an electric telescopic rod (21) extending vertically downward, and a lifting platform (22) is provided at the end of the electric telescopic rod (21), and a sealing cover (23) for covering the surface to be printed of the workpiece is provided at the bottom of the lifting platform (22), the bottom of the sealing cover (23) is open, an air inlet pipe is provided on the sealing cover (23), and a fan (24) is provided at the end of the air inlet pipe, and an air heater (25) is provided at the air inlet end of the fan (24), and the air inlet end of the air heater (25) is connected to the air outlet end of the cooling air duct (6).

6. A high-precision laser printing device according to claim 5, characterized in that: The air inlet end of the air heater (25) is provided with a first temperature sensor (26), and the air outlet end of the air heater (26) is provided with a second temperature sensor (27), and a third temperature controller (28) is provided in the sealing cover (23), and a controller is provided on the lifting platform (22), and the first temperature sensor (26), the second temperature sensor (27), the third temperature sensor (28), the air heater (25) and the fan (24) are all connected to the controller.

7. A high-precision laser printing device according to claim 5, characterized in that: A spring seat (29) is arranged between the sealing cover (23) and the mounting seat.

8. A high-precision laser printing device according to claim 5, characterized in that: An air outlet plate (30) is provided inside the sealing cover (23), and the air outlet plate (30) is provided with a plurality of air outlet nozzles (31) facing the surface to be printed.

9. A high-precision laser printing device according to claim 5, characterized in that: A plurality of air outlet holes (32) are provided on the circumferential side of the upper end of the sealing cover (23).

Images