Laser cutting machine head and laser cutting machine

Abstract

The utility model is a laser cutting machine head and a laser cutting machine, belonging to the field of laser processing equipment. Its technical solution is that a laser cutting machine head includes a head seat, a first lifting mechanism and a second lifting mechanism are provided on the head seat, a laser head assembly is installed on the moving part of the first lifting mechanism, a drilling assembly is installed on the moving part of the second lifting mechanism, and the laser head assembly and the drilling assembly are arranged in parallel. Based on the laser processing function of the head, this solution adds a drilling assembly, and when processing high-reflective materials, it can pre-drill at the knife-leading position and start cutting at the hole position, thereby avoiding a large amount of laser reflection and improving the protection of optical elements.

Description

Technical Field

[0001] The utility model relates to the field of laser processing equipment, in particular to a laser cutting machine head and a laser cutting machine. Background Art

[0002] Laser cutting technology is one of the key technologies in the field of modern manufacturing. It uses the high energy density characteristics of the laser beam to heat the material as a high-intensity heat source after focusing, so that the material in the laser action area melts or vaporizes and then evaporates, thereby forming holes or cutting seams.

[0003] In the actual processing, when the processing starts, the laser penetrates the plate at the lead-in position. At the moment of penetrating the plate, the laser will be reflected in large quantities, especially for highly reflective materials (materials with high reflectivity to lasers) such as copper, brass, aluminum and their alloys. The reflection is particularly serious, which can easily cause damage to the laser head. In addition, during the laser perforation process, especially when high-frequency perforation is performed, the high-pressure auxiliary gas quickly ejects the molten material, but part of the molten material may bounce back, and it may also contaminate the optical components and focusing lenses. Summary of the invention

[0004] The utility model aims at the problem that a large amount of reflection occurs when a laser knife penetrates a plate made of a high-reflective material, which easily damages optical elements, and provides a laser cutting machine head capable of pre-punching.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is a laser cutting machine head, including a head seat, a first lifting mechanism and a second lifting mechanism are provided on the head seat, a laser head assembly is installed on the moving part of the first lifting mechanism, a drilling assembly is installed on the moving part of the second lifting mechanism, and the laser head assembly and the drilling assembly are arranged in parallel. Based on the laser processing function of the head, this solution adds a drilling assembly, which can pre-drill the knife lead position when processing high-reflective materials, and guide the knife at the pre-drilled position for subsequent cutting steps, eliminating the laser perforation step, thereby avoiding laser reflection of the plate when penetrating, reducing the outward sputtering of slag, and improving the protection of the lens; at the same time, it improves the utilization rate of laser energy and improves processing efficiency.

[0006] Preferably, the first lifting mechanism comprises a first driving motor, a lead screw assembly is connected to an output shaft of the first driving motor, a first mounting frame is mounted on a nut seat of the lead screw assembly, and the laser head assembly is mounted on the first mounting frame.

[0007] Preferably, a linear guide rail is further provided between the first mounting frame and the head seat.

[0008] Preferably, the second lifting mechanism includes a second driving motor and a second mounting frame, a driving gear is installed on the output shaft of the second driving motor, a rack is installed on the second mounting frame, the driving gear is meshed with the rack, and a linear guide rail is also provided between the second mounting frame and the head seat.

[0009] Preferably, the head base includes a vertical mounting plate, the second driving motor of the second lifting mechanism is mounted on the second surface of the vertical mounting plate, the second mounting frame is mounted on the first surface of the vertical mounting plate, the rack is mounted on the side of the second mounting frame facing the vertical mounting plate, the vertical mounting plate is provided with a hollow window, the teeth of the driving gear pass through the hollow window and mesh with the rack. The layout of components on the head is optimized, and the components of the second lifting mechanism are distributed on both sides of the vertical mounting plate to reduce the concentration of components on the front of the vertical mounting plate. The laser head assembly and the drilling assembly can be arranged at the same front and rear positions, and the size of the head in the front and rear directions can be reduced. After installation, the center of gravity of the head is closer to the crossbeam of the laser cutting machine, optimizing the crossbeam load.

[0010] Preferably, the first lifting mechanism and the laser head assembly are mounted on a first surface of the vertical mounting plate.

[0011] Preferably, a lifting limit structure is provided between the first mounting frame and the machine head base, and / or between the second mounting frame and the machine head base. The limiting structure can ensure that the lifting and moving of the laser head assembly and / or the drilling assembly are within a safe range.

[0012] Preferably, the lifting and limiting structure comprises an upper sensing device and a lower sensing device and a trigger block installed on the head seat, and the trigger block is installed on the side of the first mounting frame and / or the second mounting frame.

[0013] Preferably, a mounting bracket is provided on the headstock, a long hole is provided on the mounting bracket, the length direction of the long hole is along the vertical direction, and the upper sensing device and / or the lower sensing device are installed in the long hole. The positions of the upper and lower sensing devices can be adjusted, thereby adjusting the travel range of the laser head assembly and / or the drilling assembly.

[0014] On the other hand, the utility model also provides a laser cutting machine, which adopts the above-mentioned laser cutting machine head.

[0015] It can be seen from the above technical solutions that the advantages of the utility model are as follows: the machine head provided by the solution has two functional components: drill drilling and laser cutting. It can pre-drill holes at the leading position before laser cutting, and introduce the laser cutting head to the drilled hole for cutting, which reduces the sputtering of slag to the outside. Due to the pre-set hole position, the optical facilities of the laser head can be better protected and its service life can be extended. Through the structural design of the first and second lifting mechanisms, the overall layout of the machine head is optimized, the position interference between components is reduced, and the dimensions of the machine head in the front and rear directions are reduced, and the crossbeam load after installation is optimized; based on this, the laser cutting machine provided by the utility model has higher energy utilization and is more suitable for drilling processing of high-reflective materials; by integrating cutting and drilling into one, the ability to complete multiple processes on one device is realized, which not only saves the time of transferring materials between different devices, but also reduces the errors caused by repeated positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.

[0018] Figure 2 for Figure 1 Front view of .

[0019] Figure 3 for Figure 1 Side view of.

[0020] Description of main reference numerals

[0021] 1. Machine head base, 2. Laser head assembly, 3. Drilling assembly, 4-1. First drive motor, 4-2. Screw assembly, 4-3. First mounting bracket, 5-1. Second drive motor, 5-2. Drive gear, 5-3. Second mounting bracket, 5-4. Rack, 6-1. Upper sensing device, 6-2. Lower sensing device, 7. Trigger block, 8. Mounting bracket. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0023] Embodiment 1

[0024] like Figure 1-3 As shown, a laser cutting machine head includes a head base 1. The head base 1 is an L-shaped structure, including a vertical mounting plate and a horizontal mounting plate. The horizontal mounting plate is located at the upper edge of the back of the vertical mounting plate and is used to install the X-axis drive structure between the head and the cutting machine beam. In this way, the front-to-back direction is defined as the direction perpendicular to the vertical mounting plate, and the back of the vertical mounting plate is its rear. The head base 1 is provided with a laser head assembly 2 and a drilling assembly 3, specifically:

[0025] A first lifting mechanism is provided on the front of the vertical mounting plate, and the first lifting mechanism includes a first driving motor 4-1 and a screw assembly 4-2. The first driving motor is installed on the top of the vertical mounting plate, and its output shaft is vertically arranged and connected to the screw body of the screw assembly 4-2. A first mounting frame 4-3 is installed on the nut seat of the screw assembly. The laser head assembly 2 is installed on the first mounting frame 4-3. Two linear guide rails are also provided on both sides of the screw body. The two side positions of the first mounting frame in the horizontal direction are connected to the sliders of the linear guide rails. The nut seat is located in the middle position of the first mounting frame. The laser head assembly 2 can adopt various existing laser heads according to processing requirements.

[0026] by Figure 2 In the direction shown, a first lifting limit structure is also provided between the left side of the first mounting frame 4-3 and the vertical mounting plate. The first lifting limit structure includes a mounting bracket 8 installed on the front side of the vertical mounting plate. The mounting bracket 8 is a strip plate structure along the vertical direction, and long holes are provided at its upper and lower ends respectively. The length direction of the long hole is along the vertical direction. The upper and lower long holes are respectively installed with an upper sensing device 6-1 and a lower sensing device 6-2, or a long hole with a longer length is set, and the upper and lower sensing devices are both installed in the long hole. In this embodiment, the upper sensing device 6-1 and the lower sensing device 6-2 both use induction switches (distance sensors), and a trigger block 7 is installed on the left side of the first mounting frame. The trigger block 7 can move between the upper and lower sensing devices. After the upper sensing device 6-1 and the lower sensing device 6-2 are triggered, the first drive motor stops rotating.

[0027] A second lifting mechanism is also provided on the vertical mounting plate, and the second lifting mechanism includes a second drive motor 5-1 and a second mounting frame 5-3. The second drive motor 5-1 is installed on the back of the vertical mounting plate, and a drive gear 5-2 is installed on the output shaft of the second drive motor 5-1. A rack 5-4 is installed on the back of the second mounting frame 5-3. A hollow window is provided on the vertical mounting plate, and the teeth of the drive gear 5-2 pass through the hollow window and mesh with the rack 5-4. A linear guide is also provided between the second mounting frame 5-3 and the head seat 1. The drilling assembly includes a drilling drive motor, and a drill bit is installed on the output shaft of the drilling drive motor through a drill bit clamp. This is a prior art and will not be repeated here.

[0028] Furthermore, a second lifting limit structure is provided between the second mounting frame 5-3 and the vertical mounting plate. The second lifting limit structure can adopt the same structure and principle as the first lifting limit structure; at the same time, the first and second lifting limit structures can also adopt other methods such as block hard limit in addition to the above-mentioned sensor limit embodiment.

[0029] Embodiment 2

[0030] Based on the laser cutting machine head of Example 1, this embodiment further provides a laser cutting machine, which adopts the laser cutting machine head provided by Example 1. Specifically, the laser cutting machine includes a bed part, a crossbeam part is installed on the bed part, and the head is installed on the crossbeam part.

[0031] When drilling high-reflective materials, the machine head and the laser cutting machine of the utility model first drill the knife guide position of the workpiece through the drill bit assembly, and then guide the knife at the drilling position to start cutting, so that a large amount of laser reflection will not occur when the plate is penetrated, thereby preventing damage to the optical element; at the same time, part of the reflected light beam generated by the laser beam is still in the depression or hole, thereby concentrating the energy in the hole, thereby improving the utilization rate of the laser energy.

[0032] It can be seen from the above embodiments that the beneficial effect of the utility model is that the machine head provided by the present solution has two functional components, namely, drill bit drilling and laser cutting. It can pre-drill holes at the knife-leading position before laser cutting, and introduce the laser cutting head to the drilled hole for cutting, thereby avoiding serious reflection at the moment of laser penetration when the knife is led, and reducing the sputtering of slag to the outside. Due to the pre-set hole position, the optical facilities of the laser head can be better protected and its service life can be extended. Through the structural design of the first and second lifting mechanisms, the overall layout of the machine head is optimized, the position interference between components is reduced, the dimensions of the machine head in the front and rear directions are reduced, and the crossbeam load after installation is optimized; based on this, the laser cutting machine provided by the utility model has higher energy utilization and is more suitable for drilling processing of high-reflective materials; by integrating cutting and drilling into one, the ability to complete multiple processes on one device is realized, which not only saves the time of transferring materials between different devices, but also reduces the errors caused by repeated positioning.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser cutting machine head, comprising a head base (1), characterized in that: The machine head base (1) is provided with a first lifting mechanism and a second lifting mechanism, a laser head assembly (2) is mounted on the moving part of the first lifting mechanism, a drilling assembly (3) is mounted on the moving part of the second lifting mechanism, and the laser head assembly (2) and the drilling assembly (3) are arranged in parallel.

2. The laser cutting machine head according to claim 1, characterized in that: The first lifting mechanism comprises a first drive motor (4-1), the output shaft of the first drive motor (4-1) is connected to a lead screw assembly (4-2), a first mounting frame (4-3) is mounted on a nut seat of the lead screw assembly, and the laser head assembly (2) is mounted on the first mounting frame (4-3).

3. The laser cutting machine head according to claim 2, characterized in that: A linear guide rail is also provided between the first mounting frame (4-3) and the machine head seat (1).

4. The laser cutting machine head according to claim 2, characterized in that: The second lifting mechanism comprises a second driving motor (5-1) and a second mounting frame (5-3); a driving gear (5-2) is mounted on the output shaft of the second driving motor (5-1); a rack (5-4) is mounted on the second mounting frame (5-3); the driving gear (5-2) is meshed with the rack (5-4); and a linear guide rail is also provided between the second mounting frame (5-3) and the machine head seat (1).

5. The laser cutting machine head according to claim 4, characterized in that: The headstock (1) comprises a vertical mounting plate, the second driving motor (5-1) of the second lifting mechanism is mounted on the second surface of the vertical mounting plate, the second mounting frame (5-3) is mounted on the first surface of the vertical mounting plate, the rack (5-4) is mounted on the second mounting frame (5-3) on a surface facing the vertical mounting plate, the vertical mounting plate is provided with a hollow window, the teeth of the driving gear (5-2) pass through the hollow window and mesh with the rack (5-4).

6. The laser cutting machine head according to claim 5, characterized in that: The first lifting mechanism and the laser head assembly are mounted on the first surface of the vertical mounting plate.

7. The laser cutting machine head according to claim 4, characterized in that: A lifting and limiting structure is provided between the first mounting frame (4-3) and the machine head seat, and / or between the second mounting frame (5-3) and the machine head seat.

8. The laser cutting machine head according to claim 7, characterized in that: The lifting and limiting structure comprises an upper sensing device (6-1), a lower sensing device (6-2) and a trigger block (7) mounted on the head seat (1); the trigger block (7) is mounted on the side of the first mounting frame (4-3) and / or the second mounting frame (5-3).

9. The laser cutting machine head according to claim 8, characterized in that: The head base (1) is provided with a mounting bracket (8), the mounting bracket (8) is provided with a long hole, the length direction of the long hole is along the vertical direction, and the upper sensing device (6-1) and / or the lower sensing device (6-2) are mounted in the long hole.

10. A laser cutting machine, characterized in that: A laser cutting machine head as described in any one of claims 1 to 9 is used.

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