A laser cutting device and method for hardware machining

Abstract

This invention relates to the field of laser cutting and discloses a laser cutting device and method for processing hardware accessories, comprising: a laser cutting frame, a laser cutting table, and a laser cutter; a height driving mechanism; a height adjustment mechanism disposed at the bottom of the laser cutting frame; the height driving mechanism being used to drive the laser cutting table to move up and down; and a cutting scribing mechanism; the cutting scribing mechanism being disposed at the front side of the laser cutter, the cutting scribing mechanism being used to make the hardware accessories fit against the high-temperature resistant ball during the process of the height driving mechanism driving the laser cutting table to move up and down, and during subsequent laser cutting, on the one hand triggering the pre-cutting area scribing, and on the other hand triggering the spraying of water-soluble protective liquid onto the surface of the hardware accessories through a linkage mechanism. In this invention, by integrating scribing positioning, anti-oxidation protection, and pre-cutting quality inspection into one, not only is the final quality of laser cutting guaranteed from the source, but the controllability of the production process is also enhanced through the visualized trace lines.

Description

Technical Field

[0001] This invention relates to the field of laser cutting, and more particularly to a laser cutting apparatus and method for processing hardware accessories. Background Technology

[0002] With the increasing demands for product precision, complexity, and production efficiency from industrial development, traditional hardware processing methods, such as stamping, shearing, and plasma cutting, have gradually become unable to meet high-standard processing requirements due to their limitations, such as limited precision, large heat-affected zone, rapid tool wear, and difficulty in processing complex shapes. Laser cutting technology, as an advanced non-contact processing method, has been rapidly promoted and applied in the field of hardware parts processing due to its advantages such as high energy density, fast cutting speed, high processing precision, smooth cut, small heat-affected zone, and ability to cut almost any material.

[0003] According to Chinese Patent Publication No. CN213998243U, a laser cutting device for hardware accessories with waste collection is disclosed, belonging to the field of hardware accessories processing. It includes a machine body, a laser cutting mechanism, and four support legs. A groove is formed on the upper surface of the machine body, and the groove runs longitudinally through the upper surface of the machine body. A waste collection box is provided inside the machine body. The waste collection box is slidably connected to the machine body, and one end of the waste collection box passes through one side of the machine body and extends out of the machine body. A buckle groove is formed on the side of the waste collection box away from the inside of the machine body. This hardware accessories laser cutting device has a stable structure and can automatically complete the cleaning and collection of waste materials, greatly reducing the workload of workers. At the same time, it can change the position of the laser cutter according to different needs, so as to cut the workpiece at different positions as needed. It is easy to use and has strong practicality, making it suitable for widespread application. However, the device still has shortcomings. After the operator sets the cutting program, he directly starts the laser to cut. If the program coordinates are set incorrectly, the workpiece is placed with slight deviation, or the fixture becomes loose, the laser will cut in the wrong position. Since metal cutting is irreversible, a wrong cut will scrap the entire workpiece, resulting in a waste of materials and time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser cutting device and method for processing hardware accessories, thus solving the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser cutting device for processing hardware accessories, comprising:

[0006] Laser cutting frame, laser cutting table, laser cutter;

[0007] A height driving mechanism; the height adjustment mechanism is located at the bottom of the laser cutting frame, and the height driving mechanism is used to drive the laser cutting table to move up and down.

[0008] A cutting and scribing mechanism is provided. This mechanism is located on the front side of the laser cutter. During the process of the height drive mechanism driving the laser cutting table upwards, the cutting and scribing mechanism ensures that the metal parts are in contact with the high-temperature resistant ball. Furthermore, during subsequent laser cutting, it triggers the scribing of a pre-defined cutting area and, through a linkage mechanism, sprays a water-soluble protective liquid onto the surface of the metal parts. The cutting and scribing mechanism includes a positioning plate, connecting slide rail, connecting slider, clamping pad, scribing liquid cylinder, telescopic rod, buffer spring, high-temperature resistant ball, linkage rod, fixing ring, water-soluble protective liquid cylinder, drain hole, and guide rail.

[0009] Preferably, a telescopic rod is provided on the lower surface of the positioning plate. The fixed end of the telescopic rod is fixedly connected to the lower surface of the positioning plate, and the free end of the telescopic rod is fixedly connected to the upper surface of the marking liquid cylinder. A buffer spring is sleeved on the outside of the telescopic rod. A pressure pad passes through the middle of the marking liquid cylinder and is fixedly connected to the pressure pad. The rear side of the pressure pad is fixedly connected to the front side of two connecting sliders. The rear sides of the two connecting sliders are slidably connected to the front side of two connecting slide rails. The two connecting slide rails are fixedly connected to the left and right ends of the front side of the laser bracket.

[0010] Preferably, the left and right sides of the clamping pad are fixedly connected with linkage rods. The ends of the two linkage rods away from the clamping pad are inserted through the lower surface of the piston inside the two water-soluble protective liquid cylinders. The water-soluble protective liquid cylinders are inserted through the inside of the fixing ring. The fixing ring is fixedly connected to the laser bracket. A drain hole is opened on the upper rear side of the water-soluble protective liquid cylinder. A liquid guide rail is provided below the drain hole. The liquid guide rail is fixedly connected to the outside of the fixing ring, and the lower end of the liquid guide rail is inclined towards the lower part of the laser cutter. A high-temperature resistant ball is provided on the lower surface of the water-soluble protective liquid cylinder.

[0011] Preferably, the height driving mechanism includes a drive screw, a belt drive pulley, a transmission belt, a threaded lifting column, and a lifting arm. The number of drive screws is set to four, and the four drive screws are respectively located at the four corners inside the laser cutting frame. Each drive screw is rotatably connected to the laser cutting frame. The lower outer side of each of the four drive screws is fixedly connected to a belt drive pulley, and a transmission belt is sleeved on the outer side of each of the four belt drive pulleys. A motor is provided at the lower end of one of the drive screws, and the output end of the motor is connected to the drive screw transmission screw.

[0012] Preferably, each of the four drive screws is threadedly connected to a threaded lifting column at the same position on the outer side, and a lifting arm is fixedly connected to the inner side of each threaded lifting column, and a laser cutting table is fixedly connected to the inner side of each lifting arm.

[0013] Preferably, the upper surface of the laser cutting table is a mesh frame structure, and hardware fittings are provided on both the left and right sides of the upper surface of the laser cutting table. A protective cover is hinged to the upper surface of the laser cutting frame.

[0014] Preferably, it further includes a cutting position adjustment mechanism, which includes a connecting bracket, a first drive belt, a connecting block, a first motor, a first drive wheel, a forward and backward moving bracket, a second motor, a second drive wheel, a positioning frame, a second drive belt, and a laser bracket. The number of connecting brackets is set to two, and the two connecting brackets are respectively fixedly connected to the left and right sides inside the laser cutting frame. The front and rear sides of the upper surface of the two connecting brackets are provided with the first drive belt, and the front and rear sides of the first drive belt are provided with the first drive wheel. The two first drive wheels are rotatably connected to the inside of the two connecting blocks. The lower end of the connecting block is fixedly connected to the upper surface of the connecting bracket. The outer side of one of the first drive wheels is provided with the first motor. The output end of the first motor is connected to the first drive wheel through belt drive. The forward and backward moving bracket is driven through the middle of the first drive belt.

[0015] Preferably, positioning frames are fixedly connected to both the left and right sides of the upper surface of the front and rear moving bracket, and driving wheels are rotatably connected inside the two positioning frames. A driving belt is sleeved on the outer side of the two driving wheels, and a laser bracket is driven to the middle of the driving belt.

[0016] Preferably, a second motor is provided on one side of the second drive wheel on the right, and the output end of the second motor is connected to the second drive wheel via a belt drive.

[0017] A laser cutting method for processing hardware accessories includes the following steps:

[0018] Step 1: Start the height drive mechanism to drive the laser cutting table and its hardware accessories to rise steadily. When the workpiece surface contacts the high-temperature resistant ball at the bottom of the cutting and scribing mechanism and continues to rise, the piston in the water-soluble protective liquid cylinder is pushed upward through the mechanical linkage of the pressure pad and the linkage rod, so that the water-soluble protective liquid in the cylinder is squeezed out from the drain hole under pressure.

[0019] Step 2: Drive the first drive belt of motor 1 to move the front and rear support in the front and rear direction. At the same time, drive the second drive belt of motor 2 to move the laser support in the left and right direction. The two work together to drive the entire cutting and scribing mechanism to move precisely on the protective film on the surface of the workpiece according to the preset cutting path, thereby scribing a complete cutting mark line.

[0020] Step 3: The operator observes the clear cutting marks left on the workpiece surface in Step 2 with the naked eye or by inspection equipment. Based on these marks, the operator measures and judges whether the size and position of the cutting path meet the processing requirements. If the cut is correct, the operator proceeds to the next step. If the cut is incorrect, the operator stops the operation and adjusts the program. This allows for quality pre-inspection before the actual cutting, thus avoiding the production of defective products.

[0021] Step 4: After confirming that the cutting path is correct, start the laser cutter. Driven by the cutting position adjustment mechanism, the laser cutter will perform laser cutting along the cutting mark line marked in Step 2. Beneficial effects

[0022] This invention provides a laser cutting apparatus and method for processing hardware accessories. Compared with the prior art, it has the following advantages:

[0023] In this invention, through the set cutting and scribing mechanism, the operator places the hardware parts to be processed into the hardware parts fixture on the laser cutting table, starts the motor in the height drive mechanism, and the motor drives four drive screws to rotate synchronously through the transmission belt. Since the drive screws are threadedly connected to the threaded lifting column, the rotating drive screws drive the threaded lifting column and its lifting arm to rise smoothly, thereby lifting the laser cutting table and the hardware parts upward. When the hardware parts rise with the cutting table until the surface of the workpiece is in contact with the high-temperature resistant ball at the bottom of the cutting and scribing mechanism, since the high-temperature resistant ball is installed on the scribing liquid cylinder, this thrust is transmitted to the outer telescopic rod through the scribing liquid cylinder and compresses the buffer spring, thereby using the elastic force of the spring to press the high-temperature resistant ball against the surface of the hardware parts. When the pressure pad is pushed upward, the two linkage rods fixedly connected to it also move upward synchronously. The other end of the linkage rod extends into the water-soluble protective liquid cylinder and presses against the lower surface of the piston. Therefore, the linkage... The rising of the lever pushes the piston upwards inside the water-soluble protective liquid cylinder. The rising piston exerts pressure on the water-soluble protective liquid inside the cylinder, forcing it to be squeezed out from the drain hole at the top rear of the cylinder. The water-soluble protective liquid squeezed out from the drain hole drips onto the guide rail below. The protective liquid flows smoothly along the groove of the guide rail and is evenly coated on the surface of the hardware parts that have just been marked by the high-temperature resistant ball, forming a protective film. Because the surface is protected by the protective liquid, the oxidation reaction at high temperature can be reduced, making the cut surface smoother and free of slag. Then, the laser cutter is driven to move along the pre-marked cutting line by the cutting position adjustment mechanism, leaving a cutting mark line on the surface of the hardware parts. The operator can use the cutting mark line to measure whether the cutting size meets the standard. In this way, the marking positioning, anti-oxidation protection and pre-cutting quality inspection are integrated into one, which not only ensures the final quality of laser cutting from the source, but also enhances the controllability of the production process through the visual mark line.

[0024] 2. In this invention, by setting a cutting position adjustment mechanism, when it is necessary to adjust the laser cutting position of the five accessories, the first motor drives the first drive wheel to rotate, thereby causing the first drive belt to rotate. When the first drive belt moves, it will drive the front and rear moving brackets fixedly connected to it to move linearly along the front and rear of the connecting bracket. Then, the second motor drives the second drive wheel to rotate, thereby causing the second drive belt to rotate. When the second drive belt moves, it will drive the laser bracket fixedly connected to it to move linearly left and right along the track formed by the positioning structure, thereby meeting the different position cutting requirements of the hardware accessories. Attached Figure Description

[0025] Figure 1 This is a 3D physical image of a laser cutting device for processing hardware accessories proposed in this invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the laser cutting device for processing hardware accessories proposed in this invention, located on the right side.

[0027] Figure 3 This is a left-side perspective structural diagram of a laser cutting device for processing hardware accessories proposed in this invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of a laser cutting device for processing hardware accessories proposed in this invention;

[0029] Figure 5 This is a schematic diagram of the internal parts structure of a laser cutting device for processing hardware accessories proposed in this invention;

[0030] Figure 6 This is a partial structural diagram of the cutting position adjustment mechanism in a laser cutting device for processing hardware accessories proposed in this invention;

[0031] Figure 7 This is a schematic diagram of the structure of the laser cutting table in a laser cutting device for processing hardware accessories proposed in this invention;

[0032] Figure 8 This is a top view of the laser cutting table in a laser cutting device for processing hardware accessories proposed in this invention.

[0033] Figure 9 This is a schematic diagram of the front structure of the cutting and scribing mechanism in a laser cutting device for processing hardware accessories proposed in this invention;

[0034] Figure 10 This is a schematic diagram of the rear structure of the cutting and scribing mechanism in a laser cutting device for processing hardware accessories proposed in this invention.

[0035] Legend:

[0036] 1. Laser cutting frame; 2. Laser cutting table; 3. Height drive mechanism; 301. Drive screw; 302. Belt drive pulley; 303. Drive belt; 304. Threaded lifting column; 305. Lifting arm; 4. Cutting and marking mechanism; 401. Positioning plate; 402. Connecting slide rail; 403. Connecting slider; 404. Pressure pad; 405. Marking liquid cylinder; 406. Telescopic rod; 407. Buffer spring; 408. High-temperature resistant ball; 409. Linkage rod; 410. Fixed... 411. Fixed ring; 412. Water-soluble protective liquid cylinder; 413. Drain hole; 414. Liquid guide rail; 5. Cutting position adjustment mechanism; 501. Connecting bracket; 502. Drive belt one; 503. Connecting block; 504. Motor one; 505. Drive wheel one; 506. Forward and backward moving bracket; 507. Motor two; 508. Drive wheel two; 509. Positioning frame; 510. Drive belt two; 511. Laser bracket; 6. Protective cover; 7. Laser cutter; 8. Hardware accessories clamp. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-10 The present invention provides two technical solutions, specifically including the following embodiments: Example 1

[0039] In the first embodiment, the laser cutting device of the present invention belongs to the field of laser cutting, and provides a laser cutting device for processing hardware accessories, comprising:

[0040] The laser cutting frame 1, laser cutting table 2, laser cutter 7, and cutting scribing mechanism 4 are all included. The cutting scribing mechanism 4 is located in front of the laser cutter 7. During the upward movement of the laser cutting table 2 driven by the height drive mechanism 3, the cutting scribing mechanism 4 ensures that the metal parts are in contact with the high-temperature resistant ball 408. Furthermore, during subsequent laser cutting, it triggers the pre-marking of the cutting area and, through a linkage mechanism, triggers the spraying of a water-soluble protective liquid onto the surface of the metal parts. The cutting scribing mechanism 4 includes a positioning plate 401, a connecting slide rail 402, and a connecting... The system includes a slider 403, a pressure pad 404, a marking liquid cylinder 405, a telescopic rod 406, a buffer spring 407, a high-temperature resistant ball 408, a linkage rod 409, a fixing ring 410, a water-soluble protective liquid cylinder 411, a drain hole 412, and a guide rail 413. A telescopic rod 406 is provided on the lower surface of the positioning plate 401. The fixed end of the telescopic rod 406 is fixedly connected to the lower surface of the positioning plate 401, and the free end of the telescopic rod 406 is fixedly connected to the upper surface of the marking liquid cylinder 405. A buffer spring 407 is sleeved on the outer side of the telescopic rod 406. A clamping pad 404 passes through and is fixedly connected to the middle of the liquid cylinder 405. The rear side of the clamping pad 404 is fixedly connected to the front side of two connecting sliders 403. The rear side of the two connecting sliders 403 is slidably connected to the front side of two connecting slide rails 402. The two connecting slide rails 402 are fixedly connected to the left and right ends of the front side of the laser bracket 511. Linkage rods 409 are fixedly connected to both sides of the clamping pad 404. The ends of the two linkage rods 409 away from the clamping pad 404 are inserted through two water-soluble protective liquids. The lower surface of the piston inside the cylinder 411, the water-soluble protective liquid cylinder 411 is installed through the inside of the fixing ring 410, the fixing ring 410 is fixedly connected to the laser bracket 511, the upper rear side of the water-soluble protective liquid cylinder 411 is provided with a drain hole 412, the lower part of the drain hole 412 is provided with a guide rail 413, the guide rail 413 is fixedly connected to the outside of the fixing ring 410, and the lower end of the guide rail 413 is inclined to the lower part of the laser cutter 7. The lower surface of the water-soluble protective liquid cylinder 411 is provided with a high temperature resistant ball 408 and a height drive mechanism 3.The height adjustment mechanism is located at the bottom of the laser cutting frame 1. The height drive mechanism 3 is used to drive the laser cutting table 2 to move up and down. The height drive mechanism 3 includes a drive screw 301, a belt drive pulley 302, a drive belt 303, a threaded lifting column 304, and a lifting arm 305. The number of drive screws 301 is set to four, and the four drive screws 301 are respectively located at the four corners inside the laser cutting frame 1. Each drive screw 301 is rotatably connected to the laser cutting frame 1. The lower outer side of each of the four drive screws 301 is fixedly connected to a belt drive pulley 302, and a drive belt 303 is sleeved on the outer side of each of the four belt drive pulleys 302. 03. A motor is installed at the lower end of one of the drive screws 301. The output end of the motor is connected to the transmission screw of the drive screw 301. Threaded lifting columns 304 are threadedly connected to the outer sides of all four drive screws 301 at the same plane. A lifting arm 305 is fixedly connected to the inner side of each threaded lifting column 304. A laser cutting table 2 is fixedly connected to the inner side of the lifting arm 305. It should be noted that a feeding plug is provided on one side of both the marking liquid cylinder 405 and the water-soluble protective liquid cylinder 411. This is not shown in the figure. When adding material, simply unscrew the feeding plug to add the corresponding material to the marking liquid cylinder 405 and the water-soluble protective liquid cylinder 411.

[0041] During operation, the operator places the metal parts to be processed into the metal parts fixture 8 on the laser cutting table 2 and starts the motor in the height drive mechanism 3. The motor drives the four drive screws 301 to rotate synchronously via the transmission belt 303. Since the drive screws 301 are threadedly connected to the threaded lifting column 304, the rotating drive screws 301 drive the threaded lifting column 304 and its lifting arm 305 to rise smoothly, thereby lifting the laser cutting table 2 and the metal parts upward. When the metal parts rise with the cutting table until the workpiece surface is flush with the bottom of the cutting and scribing mechanism 4, the workpiece is lifted to the next higher position. The high-temperature resistant ball 408 is bonded to the surface of the hardware by means of its elasticity. Since the high-temperature resistant ball 408 is mounted on the marking liquid cylinder 405, the thrust is transmitted through the marking liquid cylinder 405 to the outer telescopic rod 406, compressing the buffer spring 407. When the pressure pad 404 is pushed upwards, the two linkage rods 409 fixedly connected to it also move upwards synchronously. The other end of the linkage rod 409 extends into the water-soluble protective liquid cylinder 411 and presses against the lower surface of the piston. Therefore, the linkage rod 409... The rising piston pushes it upwards within the water-soluble protective liquid cylinder 411. This upward movement of the piston exerts pressure on the protective liquid inside, forcing it to be squeezed out from the drain hole 412 located at the top rear of the cylinder. The squeezed-out liquid drips onto the lower guide rail 413, flowing smoothly along its grooves and evenly coating the surface of the metal parts that has just been marked by the high-temperature resistant ball 408, forming a protective film. This protective liquid reduces oxidation at high temperatures, ensuring a smoother cut. The cut surface is smoother and free of slag. Then, the laser cutter 7 is driven by the cutting position adjustment mechanism 5 to move along the pre-marked cutting line, leaving cutting marks on the surface of the hardware parts. Operators can use these cutting marks to measure whether the cutting dimensions meet the standards. In this way, marking, anti-oxidation protection, and pre-cutting quality inspection are integrated. This not only ensures the final quality of laser cutting from the source, but also enhances the controllability of the production process through the visible cutting marks. The water-soluble protective liquid can be one of polyvinyl alcohol, polyvinylpyrrolidone, or polyacrylic acid protective liquid. Example 2

[0042] Based on Embodiment 1, the upper surface of the laser cutting table 2 is a grid structure, and hardware fittings 8 are provided on both the left and right sides of the upper surface of the laser cutting table 2. The upper surface of the laser cutting frame 1 is hinged with a protective cover 6, and also includes a cutting position adjustment mechanism 5. The cutting position adjustment mechanism 5 includes a connecting bracket 501, a first drive belt 502, a connecting block 503, a first motor 504, a first drive wheel 505, a forward and backward moving bracket 506, a second motor 507, a second drive wheel 508, a positioning frame 509, a second drive belt 510, and a laser bracket 511. The quantity is set to two. Two connecting brackets 501 are fixedly connected to the left and right sides inside the laser cutting frame 1, respectively. Drive belts 502 are provided on the front and rear sides of the upper surface of each connecting bracket 501. Drive wheels 505 are provided inside the front and rear sides of each drive belt 502. The two drive wheels 505 are rotatably connected inside two connecting blocks 503. The lower end of each connecting block 503 is fixedly connected to the upper surface of the connecting bracket 501. A motor 504 is provided on the outer side of one of the drive wheels 505. The output end of the motor 504 is connected to the drive wheel 505 via a belt drive. 5. A forward / backward moving bracket 506 is connected to the middle of the drive belt 502. Positioning brackets 509 are fixedly connected to both sides of the upper surface of the forward / backward moving bracket 506. Drive wheels 508 are rotatably connected inside both positioning brackets 509. A drive belt 510 is sleeved on the outer side of the two drive wheels 508. A laser bracket 511 is connected to the middle of the drive belt 510. A motor 507 is located on one side of the right drive wheel 508. The output end of the motor 507 is connected to the drive wheel 508 via a belt drive. When it is necessary to adjust the laser cutting of the five accessories... When in position, the drive wheel 505 is rotated by the motor 504, which in turn rotates the drive belt 502. When the drive belt 502 moves, it drives the forward and backward moving bracket 506, which is fixedly connected to it, to move linearly back and forth along the connecting bracket 501. Then, the drive wheel 508 is rotated by the motor 507, which in turn rotates the drive belt 510. When the drive belt 510 moves, it drives the laser bracket 511, which is fixedly connected to it, to move linearly left and right along the track formed by the positioning frame 509, thereby meeting the different positional cutting requirements of the hardware accessories.

[0043] A laser cutting method for processing hardware accessories includes the following steps:

[0044] Step 1: Start the height drive mechanism (3) to drive the laser cutting table (2) and its hardware accessories to rise steadily. When the workpiece surface contacts the high temperature resistant ball (408) at the bottom of the cutting and scribing mechanism (4) and continues to rise, the piston in the water-soluble protective liquid cylinder (411) is pushed upward by the mechanical linkage of the pressure pad (404) and the linkage rod (409), so that the water-soluble protective liquid in the cylinder is squeezed out from the drain hole (412) under pressure.

[0045] Step 2: Drive the drive belt 1 (502) through motor 1 (504) to drive the front and rear moving bracket (506) to move in the front and rear direction. At the same time, drive the drive belt 2 (510) through motor 2 (507) to drive the laser bracket (511) to move in the left and right direction. The two work together to drive the cutting and scribing mechanism (4) to move precisely on the protective film on the surface of the workpiece according to the preset cutting path, thereby scribing a complete cutting mark line.

[0046] Step 3: The operator observes the clear cutting marks left on the workpiece surface in Step 2 with the naked eye or by inspection equipment. Based on these marks, the operator measures and judges whether the size and position of the cutting path meet the processing requirements. If the cut is correct, the operator proceeds to the next step. If the cut is incorrect, the operator stops the operation and adjusts the program. This allows for quality pre-inspection before the actual cutting, thus avoiding the production of defective products.

[0047] Step 4: After confirming that the cutting path is correct, start the laser cutter (7). Driven by the cutting position adjustment mechanism (5), the laser cutter (7) performs laser cutting along the cutting mark line marked in Step 2.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A laser cutting device for processing hardware accessories, characterized in that: include: Laser cutting frame (1), laser cutting table (2), laser cutter (7); Height drive mechanism (3); The height drive mechanism (3) is located at the bottom of the laser cutting frame (1), and the height drive mechanism (3) is used to drive the laser cutting table (2) to move up and down; Cutting and scribing mechanism (4); The cutting and scribing mechanism (4) is set on the front side of the laser cutter (7). The cutting and scribing mechanism (4) is used to make the hardware parts fit with the high temperature resistant ball (408) during the process of the height driving mechanism (3) driving the laser cutting table (2) to move upward. In the subsequent laser cutting, on the one hand, it triggers the pre-cutting area scribing, and on the other hand, it triggers the spraying of water-soluble protective liquid to coat the surface of the hardware parts through linkage. The cutting and marking mechanism (4) includes a positioning plate (401), a connecting slide rail (402), a connecting slider (403), a pressing pad (404), a marking liquid cylinder (405), a telescopic rod (406), a buffer spring (407), a high-temperature resistant ball (408), a linkage rod (409), a fixing ring (410), a water-soluble protective liquid cylinder (411), a drain hole (412), and a liquid guide rail (413). A telescopic rod (406) is provided on the lower surface of the positioning plate (401). The fixed end of the telescopic rod (406) is fixedly connected to the lower surface of the positioning plate (401), and the free end of the telescopic rod (406) is fixedly connected to the upper surface of the marking liquid cylinder (405). A buffer spring (407) is sleeved on the outside of the telescopic rod (406). A clamping pad (404) passes through the middle of the marking liquid cylinder (405) and is fixedly connected to the clamping pad (404). The rear side of the clamping pad (404) is fixedly connected to the front side of two connecting sliders (403). The rear sides of the two connecting sliders (403) are slidably connected to the front side of two connecting slide rails (402). The two connecting slide rails (402) are fixedly connected to the left and right ends of the front side of the laser bracket (511). The clamping pad (404) Linkage rods (409) are fixedly connected to both sides. The ends of the two linkage rods (409) away from the clamping pad (404) are inserted through the lower surface of the piston inside the two water-soluble protective liquid cylinders (411). The water-soluble protective liquid cylinders (411) are inserted through the inside of the fixing ring (410). The fixing ring (410) is fixedly connected to the laser bracket (511). A drain hole (412) is opened on the upper rear side of the water-soluble protective liquid cylinder (411). A guide rail (413) is provided below the drain hole (412). The guide rail (413) is fixedly connected to the outside of the fixing ring (410), and the lower end of the guide rail (413) is inclined to the lower side of the laser cutter (7). A high-temperature resistant ball (408) is provided on the lower surface of the water-soluble protective liquid cylinder (411). The height driving mechanism (3) includes a drive screw (301), a belt drive pulley (302), a drive belt (303), a threaded lifting column (304), and a lifting arm (305). The number of drive screws (301) is set to four. The four drive screws (301) are respectively located at the four corners inside the laser cutting frame (1). Each drive screw (301) is rotatably connected to the laser cutting frame (1). The lower outer side of each of the four drive screws (301) is fixedly connected to a belt drive wheel (302). A drive belt (303) is sleeved on the outer side of each of the four belt drive wheels (302). A motor is provided at the lower end of one of the drive screws (301). The output end of the motor is connected to the drive screw (301) drive screw. Threaded lifting columns (304) are threadedly connected to the same plane position on the outer side of each of the four drive screws (301). A lifting arm (305) is fixedly connected to the inner side of each threaded lifting column (304). A laser cutting table (2) is fixedly connected to the inner side of the lifting arm (305).

2. The laser cutting device for processing hardware accessories according to claim 1, characterized in that: The upper surface of the laser cutting table (2) is a grid structure, and hardware fittings (8) are provided on both the left and right sides of the upper surface of the laser cutting table (2). The upper surface of the laser cutting frame (1) is hinged with a protective cover (6).

3. The laser cutting device for processing hardware accessories according to claim 1, characterized in that: It also includes a cutting position adjustment mechanism (5), which includes a connecting bracket (501), a first drive belt (502), a connecting block (503), a first motor (504), a first drive wheel (505), a forward and backward moving bracket (506), a second motor (507), a second drive wheel (508), a positioning frame (509), a second drive belt (510), and a laser bracket (511).

4. The laser cutting device for processing hardware accessories according to claim 3, characterized in that: The number of connecting brackets (501) is set to two. The two connecting brackets (501) are fixedly connected to the left and right sides inside the laser cutting frame (1). The front and rear sides of the upper surface of the two connecting brackets (501) are provided with drive belts (502). The front and rear sides of the drive belts (502) are provided with drive wheels (505). The two drive wheels (505) are rotatably connected to the inside of two connecting blocks (503). The lower end of the connecting block (503) is fixedly connected to the upper surface of the connecting bracket (501). A motor (504) is provided on the outside of one of the drive wheels (505). The output end of the motor (504) is connected to the drive wheel (505) through belt drive. The middle part of the drive belt (502) is connected to the front and rear moving bracket (506).

5. The laser cutting device for processing hardware accessories according to claim 4, characterized in that: The upper surface of the forward and backward moving bracket (506) is fixedly connected to the left and right sides of the positioning frame (509). The two positioning frames (509) are rotatably connected to the inside of the two driving wheels (508). The two driving wheels (508) are fitted with the driving belt (510) on the outside. The laser bracket (511) is connected to the middle of the driving belt (510).

6. A laser cutting method for processing hardware accessories, based on any one of the laser cutting apparatuses for processing hardware accessories according to claims 1-5, characterized in that: Includes the following steps: Step 1: Start the height drive mechanism (3) to drive the laser cutting table (2) and its hardware accessories to rise steadily. When the workpiece surface contacts the high temperature resistant ball (408) at the bottom of the cutting and scribing mechanism (4) and continues to rise, the piston in the water-soluble protective liquid cylinder (411) is pushed upward by the mechanical linkage of the pressure pad (404) and the linkage rod (409), so that the water-soluble protective liquid in the cylinder is squeezed out from the drain hole (412) under pressure. Step 2: Drive the drive belt 1 (502) through motor 1 (504) to drive the front and rear moving bracket (506) to move in the front and rear direction. At the same time, drive the drive belt 2 (510) through motor 2 (507) to drive the laser bracket (511) to move in the left and right direction. The two work together to drive the cutting and scribing mechanism (4) to move precisely on the protective film on the surface of the workpiece according to the preset cutting path, thereby scribing a complete cutting mark line. Step 3: The operator observes the clear cutting marks left on the workpiece surface in Step 2 with the naked eye or by inspection equipment. Based on these marks, the operator measures and judges whether the size and position of the cutting path meet the processing requirements. If the cut is correct, the operator proceeds to the next step. If the cut is incorrect, the operator stops the operation and adjusts the program. This allows for quality pre-inspection before the actual cutting, thus avoiding the production of defective products. Step 4: After confirming that the cutting path is correct, start the laser cutter (7). Driven by the cutting position adjustment mechanism (5), the laser cutter (7) performs laser cutting along the cutting mark line marked in Step 2.

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