A laser cutting device

Abstract

This utility model discloses a laser cutting device, including a frame, a laser cutting section mounted on the frame, and two parallel longitudinal slide rails. The laser cutting section is slidably mounted on the two longitudinal slide rails via a bracket. The laser cutting section includes a mounting frame, a laser cutter mounted on the mounting frame, and a mounting frame drive motor. The top of the bracket is provided with a first parallel transverse slide rail and a rack, and the front side wall of the bracket is provided with a second transverse slide rail. The mounting frame includes a horizontal frame and a vertical frame connected to each other. The laser cutting section is mounted on the front side of the vertical frame, and the mounting frame drive motor is mounted on the horizontal frame. The horizontal frame is slidably connected to the first transverse slide rail, and the rear side of the vertical frame is slidably connected to the second transverse slide rail. The output shaft of the mounting frame drive motor is provided with a gear that meshes with the rack. This utility model reduces the maintenance rate and ensures operational stability.

Description

Technical Field

[0001] This utility model relates to a metal cutting device, and more particularly to a laser cutting device. Background Technology

[0002] When metal sheets, such as stainless steel sheets, are finished, they are large pieces that generally need to be cut to the required dimensions. Conventional cutting equipment typically uses laser cutting machines. However, laser cutting machines are generally driven by motors and lead screws, or by motors and belts, when moving along the X-axis. The motor and lead screw method has the following drawbacks: If the X-axis travel is large, the lead screw, due to its own weight during machining, may sag in the middle, causing slight jamming during rotation. Over time, the lead screw grooves at the jamming points will wear, or the entire lead screw assembly will wear, leading to frequent maintenance. Jamming can also cause vibrations, affecting cutting stability. If a belt is used, the high-temperature heat radiation generated during laser cutting will be transferred to the belt, or hot metal chips from the cutting process will splash onto the belt, causing damage. Summary of the Invention

[0003] The purpose of this invention is to provide a laser cutting device that reduces maintenance rates and ensures stable equipment operation by using this structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a laser cutting device, including a frame, a laser cutting part disposed on the frame, and two parallel longitudinal slide rails, wherein the laser cutting part is slidably disposed on the two longitudinal slide rails via a bracket, and the laser cutting part includes a mounting frame, a laser cutting machine mounted on the mounting frame, and a mounting frame drive motor;

[0005] The top of the bracket is provided with a first transverse slide rail and a rack that are parallel to each other. The front side wall of the bracket is provided with a second transverse slide rail. The mounting frame includes a horizontal frame and a vertical frame. The front end of the horizontal frame is vertically connected to the upper rear end of the vertical frame. The laser cutting part is installed on the front side of the vertical frame. The mounting frame drive motor is installed on the horizontal frame. The horizontal frame is slidably connected to the first transverse slide rail. The rear side of the vertical frame is slidably connected to the second transverse slide rail. The output shaft of the mounting frame drive motor is provided with a gear that meshes with the rack.

[0006] In the above technical solution, the rack is disposed on the rear side of the first transverse slide rail, and the mounting bracket drive motor is disposed near the rear side of the crossbeam.

[0007] In the above technical solution, the bottom of the horizontal frame is slidably connected to the first transverse slide rail via a horizontal frame slider, and the rear side of the vertical frame is slidably connected to the second transverse slide rail via a vertical frame slider.

[0008] In the above technical solution, the front side wall of the vertical frame is provided with two parallel vertical slide rails, and the laser cutting machine is slidably mounted on the two vertical slide rails via a sliding plate;

[0009] A vertical motor and a vertical lead screw are also provided on the front side wall of the vertical frame. The vertical motor drives the vertical lead screw to rotate, and the middle part of the vertical lead screw is screwed to the slide plate.

[0010] In the above technical solution, two side guide wheels are respectively provided at both ends of the bracket. Each side guide wheel is detachably installed on the bracket via a guide wheel mounting plate. The axis of the side guide wheel is perpendicular to the top surface of the longitudinal slide rail, and the outer surface of the side guide wheel abuts against the side wall of the longitudinal slide rail.

[0011] In the above technical solution, the side guide wheel is a rubber-coated wheel.

[0012] In the above technical solution, a longitudinal rack is also provided on the frame on the side of one of the longitudinal slide rails. The longitudinal rack is arranged parallel to the longitudinal slide rail. A bracket drive motor is installed on one side of the bracket. The bracket drive motor is installed on the side wall of one end of the bracket via a connecting frame. A second gear that meshes with the longitudinal rack is provided on the output shaft of the bracket drive motor.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] 1. The present invention uses a gear and rack mechanism to drive the laser cutting unit, which can improve the stability of operation and reduce the maintenance rate;

[0015] 2. In this utility model, two parallel first and second transverse slide rails are provided. The truss and the vertical frame are respectively connected to the corresponding transverse slide rails, which can guide the movement of the two positions of the mounting frame, effectively ensuring the smoothness and stability of the laser cutting part during movement and ensuring cutting accuracy.

[0016] 3. The rack is positioned at the top of the bracket, which reduces heat radiation transfer to the gears and rack and prevents metal shavings from splashing onto them, minimizing disruption to the normal operation of the gears and rack and reducing maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model;

[0018] Figure 2 yes Figure 1 A magnified view of the connection between the central support and the longitudinal slide rail on one side;

[0019] Figure 3 This is a structural schematic diagram of the laser cutting part connected to the bracket in Embodiment 1 of this utility model;

[0020] Figure 4 yes Figure 3 A magnified view of the connection between the laser cutting section and the support;

[0021] Figure 5 This is a structural schematic diagram of the connection between the laser cutting part and the bracket in Embodiment 1 of this utility model from the rear side.

[0022] The components are as follows: 1. Frame; 2. Laser cutting section; 3. Longitudinal slide rail; 4. Bracket; 5. Mounting bracket; 6. Laser cutting machine; 7. Mounting bracket drive motor; 8. First transverse slide rail; 9. Rack; 10. Second transverse slide rail; 11. Horizontal frame; 12. Vertical frame; 13. Gear; 14. Horizontal frame slider; 15. Vertical frame slider; 16. Vertical slide rail; 17. Slide plate; 18. Vertical motor; 19. Vertical lead screw; 20. Longitudinal rack; 21. Bracket drive motor; 22. Connecting frame; 23. Second gear; 24. Side guide wheel; 25. Guide wheel mounting plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Example 1: See Figure 1-5 As shown, a laser cutting device includes a frame 1, a laser cutting part 2 disposed on the frame 1, and two parallel longitudinal slide rails 3. The laser cutting part 2 is slidably disposed on the two longitudinal slide rails 3 via a bracket 4. The laser cutting part 2 includes a mounting frame 5, a laser cutting machine 6 mounted on the mounting frame 5, and a mounting frame drive motor 7.

[0025] The bracket 4 has a first transverse slide rail 8 and a rack 9 that are parallel to each other on its top. The front side wall of the bracket 4 has a second transverse slide rail 10 that is parallel to the first transverse slide rail 8 and the rack 9. The mounting frame 5 includes a horizontal frame 11 and a vertical frame 12. The front end of the horizontal frame 11 is vertically connected to the upper rear end of the vertical frame 12. The laser cutting part 2 is mounted on the front side of the vertical frame 12. The mounting frame drive motor 7 is mounted on the horizontal frame 11. The horizontal frame 11 is slidably connected to the first transverse slide rail 8. The rear side of the vertical frame 12 is slidably connected to the second transverse slide rail 10. The output shaft of the mounting frame drive motor 7 is provided with a gear 13 that meshes with the rack 9.

[0026] In this embodiment, the laser cutting machine is a laser cutting gun. A mounting frame drive motor, rack, and gears drive the laser cutting machine to move laterally along the support. This configuration includes a first and a second transverse slide rail. The horizontal frame slides on the first transverse slide rail, and the vertical frame slides on the second transverse slide rail. The horizontal and vertical frames are vertically connected. A vertical drive unit is installed on the vertical frame, which drives the laser cutting machine to move vertically. The use of the first and second transverse slide rails ensures stable and precise lateral movement of the mounting frame and the laser cutting machine on it along the support when the gears rotate, preventing wobbling and ensuring accurate positioning of the laser cutting machine, thus guaranteeing the laser cutting effect and precision. Simultaneously, the rack and gear structure allows for precise movement of the mounting frame. Furthermore, the rack, gears, and mounting frame drive motor are mounted on the top of the support, minimizing the risk of high temperatures and metal shavings splashing onto the frame during cutting, which could affect its lifespan. On the same side wall where the first and second transverse slide rails are not supported, they are used to guide the movement of the horizontal and vertical frames respectively, ensuring the stability of the sliding precisely. Even if the horizontal frame and the first transverse slide rail wobbles, the sliding of the vertical frame and the second transverse slide rail will limit the movement, ensuring the stability of the cutting.

[0027] The mounting frame uses a combination of horizontal and vertical frames, which are detachably connected. If there is a problem with the mounting frame drive motor or the laser cutting machine, the corresponding horizontal or vertical frame can be disassembled together for repair or replacement to facilitate maintenance and disassembly.

[0028] See Figure 4 , 5 As shown, the rack 9 is disposed on the rear side of the first transverse slide rail 8, and the mounting bracket drive motor 7 is disposed near the rear side of the crossbeam 11.

[0029] The mounting bracket drive motor is located near the rear of the horizontal frame, while the laser cutting machine is mounted on the front side wall of the vertical frame. This makes the front and rear counterweights of the entire mounting bracket more balanced, resulting in a more even weight distribution on the first and second horizontal slide rails. This helps to prevent wear on the first and second horizontal slide rails, which could lead to wobbling or inaccuracy, thus ensuring processing precision and service life.

[0030] If only one or the second transverse slide rail is installed, with the first slide rail located on the top surface of the support, its top surface primarily bears the weight, transferring the weight mainly to the top of the support. The second slide rail, located on the front side wall of the support, has its top surface as the primary load-bearing surface, meaning it mainly experiences lateral forces. This results in rapid wear on its top surface, affecting accuracy and lifespan. Therefore, installing the first and second transverse slide rails on the top and front side wall of the support, respectively, can distribute the weight and lateral forces between the two rails, extending their lifespan and ensuring the processing accuracy of the laser cutting machine.

[0031] See Figure 4 , 5 As shown, the bottom of the horizontal frame 11 is slidably connected to the first horizontal slide rail 8 via the horizontal frame slider 14, and the rear side of the vertical frame 12 is slidably connected to the second horizontal slide rail 10 via the vertical frame slider 15.

[0032] See Figure 4 As shown, the front side wall of the vertical frame 12 is provided with two parallel vertical slide rails 16, and the laser cutting machine 6 is slidably mounted on the two vertical slide rails 16 via the slide plate 17.

[0033] A vertical motor 18 and a vertical lead screw 19 are also provided on the front side wall of the vertical frame 12. The vertical motor 18 drives the vertical lead screw 19 to rotate, and the middle part of the vertical lead screw 19 is screwed to the slide plate 17.

[0034] The laser cutting machine is driven to move up and down precisely by a vertical motor and a vertical lead screw, so that the laser cutting machine can move closer to or away from the product (the product is placed on the frame and will be below the support).

[0035] A longitudinal rack 20 is also provided on the frame on the side of one of the longitudinal slide rails 3. The longitudinal rack 20 is arranged parallel to the longitudinal slide rail 3. A bracket drive motor 21 is installed on one side of the bracket 4. The bracket drive motor 21 is installed on the side wall of one end of the bracket 4 via a connecting frame 22. A second gear 23 that meshes with the longitudinal rack 20 is provided on the output shaft of the bracket drive motor 21.

[0036] In this embodiment, the laser cutting machine can move along the X-axis on the support, the support can move along the Y-axis along the frame via a longitudinal slide rail, and the laser cutting machine can move along the Z-axis on the vertical frame, thus achieving three-axis movement of the laser cutting machine. The longitudinal rack and pinion mechanism and the support drive motor allow for precise longitudinal movement of the support along the longitudinal slide rail. The rack and pinion drive system offers a longer service life, higher precision, and stronger heat resistance.

[0037] In another preferred embodiment, see Figure 2 As shown, the bracket 4 is provided with two side guide wheels 24 at both ends. Each side guide wheel 24 is detachably mounted on the bracket 4 via a guide wheel mounting plate 25. The axis of the side guide wheel is perpendicular to the top surface of the longitudinal slide rail, and the outer surface of the side guide wheel abuts against the side wall of the longitudinal slide rail.

[0038] The side guide wheels can be made of rubber-coated wheels. Because the bracket is quite heavy, the drive motor has relatively high power (resulting in some vibration during operation, causing some shaking of the entire bracket). When the motor drives the second gear to rotate and moves the bracket via the longitudinal rack, it causes some shaking. Therefore, side guide wheels are installed, which abut against the side wall of the longitudinal slide rail, increasing the contact force between the bracket and the longitudinal slide rail, reducing the bracket's shaking. The rubber-coated wheels on the side guide wheels also act as a buffer to absorb vibration, further reducing the bracket's shaking and vibration, ensuring the laser cutting machine's cutting accuracy or effect on the product (of course, side guide wheels can also be omitted).

[0039] The axis of the side guide wheel is perpendicular to the top surface of the longitudinal slide rail, so that the side guide wheel abuts against the outer side wall of the longitudinal slide rail. Based on the movable connection between the bracket and the longitudinal slide rail, the side guide wheel at both ends of the bracket restricts the bracket to prevent it from moving or wobbling slightly to the left or right, thus ensuring the stability of the bracket during movement.

[0040] Furthermore, the side guide wheels can be omitted without affecting the normal operation of the equipment. They can be selectively installed depending on the actual situation, and the resistance of the side guide wheels against the longitudinal slide rail can be adjusted. This increases the stability of the support during movement along the longitudinal slide rail (the greater the resistance, the more stable the operation; the smaller the resistance, the less stable the support may be during movement).

Claims

1. A laser cutting device, comprising a frame, a laser cutting section disposed on the frame, and two parallel longitudinal slide rails, wherein the laser cutting section is slidably disposed on the two longitudinal slide rails via a bracket, characterized in that: The laser cutting unit includes a mounting frame, a laser cutting machine mounted on the mounting frame, and a mounting frame drive motor; The top of the bracket is provided with a first transverse slide rail and a rack that are parallel to each other. The front side wall of the bracket is provided with a second transverse slide rail. The mounting frame includes a horizontal frame and a vertical frame. The front end of the horizontal frame is vertically connected to the upper rear end of the vertical frame. The laser cutting part is installed on the front side of the vertical frame. The mounting frame drive motor is installed on the horizontal frame. The horizontal frame is slidably connected to the first transverse slide rail. The rear side of the vertical frame is slidably connected to the second transverse slide rail. The output shaft of the mounting frame drive motor is provided with a gear that meshes with the rack.

2. The laser cutting apparatus according to claim 1, characterized in that: The rack is located on the rear side of the first transverse slide rail, and the mounting bracket drive motor is located near the rear side of the crossbeam.

3. The laser cutting apparatus according to claim 1, characterized in that: The bottom of the horizontal frame is slidably connected to the first transverse slide rail via a horizontal frame slider, and the rear side of the vertical frame is slidably connected to the second transverse slide rail via a vertical frame slider.

4. The laser cutting apparatus according to claim 1, characterized in that: The front side wall of the vertical frame is provided with two parallel vertical slide rails, and the laser cutting machine is slidably mounted on the two vertical slide rails via a sliding plate; A vertical motor and a vertical lead screw are also provided on the front side wall of the vertical frame. The vertical motor drives the vertical lead screw to rotate, and the middle part of the vertical lead screw is screwed to the slide plate.

5. The laser cutting apparatus according to claim 1, characterized in that: The bracket is also provided with two side guide wheels at each end. Each side guide wheel is detachably mounted on the bracket via a guide wheel mounting plate. The axis of the side guide wheel is perpendicular to the top surface of the longitudinal slide rail, and the outer surface of the side guide wheel abuts against the side wall of the longitudinal slide rail.

6. The laser cutting apparatus according to claim 5, characterized in that: The side guide wheel is a rubber-coated wheel.

7. The laser cutting apparatus according to claim 1, characterized in that: A longitudinal rack is also provided on the frame on the side of the longitudinal slide rail. The longitudinal rack is arranged parallel to the longitudinal slide rail. A bracket drive motor is installed on one side of the bracket. The bracket drive motor is installed on the side wall of one end of the bracket via a connecting frame. A second gear that meshes with the longitudinal rack is provided on the output shaft of the bracket drive motor.

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