Metal laser cutting device

Abstract

The invention discloses a metal laser cutting device, which relates to the technical field of laser processing and comprises a cutting cabin, a supporting base is fixedly mounted at the bottom of the cutting cabin, a control panel is arranged at the front part of the cutting cabin, a cabin door is rotatably connected to the top of the cutting cabin, and an air pump is fixedly mounted at the rear part of the cutting cabin. A longitudinal moving beam is fixedly mounted on the left side of the inner wall of the cutting cabin, a transverse moving beam is slidably connected to the top of the longitudinal moving beam, and a laser cutter is slidably mounted on the front portion of the transverse moving beam. A door clamping rod is driven by a pull ring to slide so as to relieve the limit between a cabin door and a cutting cabin, so that the cabin door can be closed only by using two hands at the same time before the device is used for machining, and clamping injury caused by negligence of a worker is avoided; and after the cabin door is closed, the door clamping rod drives a two-way telescopic rod and a cross beam check block through a pulley ejector rod to relieve the limit of a transverse moving beam. And the laser cutter can carry out movable machining only after the cabin door is completely closed.

Description

Technical Field

[0001] The present invention relates to the technical field of laser processing, and particularly to a metal laser cutting device. Background Art

[0002] A metal laser cutting device is usually used for high-precision and high-quality cutting of metal processing materials, aiming to process metal parts with more complex shapes.

[0003] The patent with the patent announcement number CN210060134U relates to a laser cutting device for metal casting processing, which includes a machine tool main body, etc. The machine tool main body is horizontally placed on the ground, a conveyor belt is placed on the top of the machine tool main body, a conveyor belt speed control button is located on the front side of the machine tool main body, two first slide rails are symmetrically fixed on the top of the machine tool main body and are respectively located on both sides of the conveyor belt, a slider is slidably connected to the first slide rail, a first driving motor is fixed on the right side of the slider, an oil tank is fixed on the left side of the slider; the bottom end of the second slide rail is welded to the top end of the slider; a feeding table is slidably connected to the second slide rail. This patent can achieve laser cutting of metal castings, with relatively high cutting efficiency, no shrinkage or deformation of the workpiece after cutting, and good working stability, and is suitable for small and medium-sized enterprises.

[0004] In the above patent, there are many beneficial effects such as high cutting efficiency and strong working stability, and the expected effect is achieved through a simple structure. However, during the use of this device, when the staff performs operations such as loading and starting the device, they can perform the operations with one hand, which is likely to cause the other hand of the staff to be pinched or crushed due to negligent misplacement. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a metal laser cutting device, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is implemented through the following technical solutions: A metal laser cutting device includes a cutting chamber. A support base is fixedly installed at the bottom of the cutting chamber. A control panel is arranged at the front of the cutting chamber. A hatch door is rotatably connected to the top of the cutting chamber. An air pump is fixedly installed at the rear of the cutting chamber. A longitudinal moving beam is fixedly installed on the left side of the inner wall of the cutting chamber. A transverse moving beam is slidably connected to the top of the longitudinal moving beam. A laser cutter is slidably installed at the front of the transverse moving beam. A pull ring is slidably installed at the front of the hatch door. A steel wire rope is fixedly connected to the rear of the pull ring. A pulley group is arranged at the bottom of the hatch door. A door latch rod is slidably installed at the bottom of the hatch door. The pull ring is fixedly connected to the left side of the door latch rod through the steel wire rope. A pulley top rod is slidably installed at the top of the inner wall of the cutting chamber. A bidirectional telescopic rod is rotatably installed on the side of the inner wall of the cutting chamber. The rear of the bidirectional telescopic rod is fixedly connected to a cross beam stopper through a rotating connecting rod. By driving the door latch rod to slide through the pull ring to release the limit between the hatch door and the cutting chamber, it is necessary to use both hands to close the hatch door before the device performs processing, avoiding pinching caused by staff negligence. After closing the hatch door, the door latch rod drives the bidirectional telescopic rod and the cross beam stopper to release the limit of the transverse moving beam through the pulley top rod, realizing that the laser cutter can move for processing only after the hatch door is completely closed, avoiding direct processing by the laser cutter before the hatch door is closed and causing harm to the staff.

[0007] According to the above technical solutions, door latch rods are fixedly connected to the rear of both pull rings through steel wire ropes. A return spring is arranged between the door latch rod and the hatch door. The bottom of the door latch rod contacts the top of the cutting chamber. A second return spring is arranged between the pulley top rod and the cutting chamber. The pulley top rod is located on the movement track of the door latch rod. The bidirectional telescopic rod is located on the movement track of the pulley top rod. The rear of the cross beam stopper contacts the front of the transverse moving beam. The elastic force of the return spring realizes re-limiting the hatch door after the hatch door is completely closed, realizing that the hatch door will not suddenly open due to external force factors during the processing of the device.

[0008] According to the above technical solutions, a cleaning device is arranged inside the cutting chamber. The cleaning device includes an air nozzle, a unidirectional rotating rod and an air valve. The air nozzle is fixedly installed on the top of the inner wall of the cutting chamber. The unidirectional rotating rod is rotatably installed on the top of the inner wall of the cutting chamber. The air valve is fixedly installed on the top of the inner wall of the cutting chamber. The unidirectional rotating rod and the air valve realize that the air valve will be driven to rotate and open only when the front end of the unidirectional rotating rod rotates, so that the air nozzle sprays air to clean the surface of the workpiece.

[0009] According to the above technical solution, the cleaning device further includes a piston sleeve, a pneumatic piston, a small-hole baffle, a bi-directional elastic rod, and a bolt. The piston sleeve is fixedly installed at the top of the inner wall of the cutting chamber. The pneumatic piston is slidably connected to the inner wall of the piston sleeve. The small-hole baffle is rotatably connected to the right side of the piston sleeve. The bi-directional elastic rod is rotatably installed at the top of the inner wall of the cutting chamber. The bolt is slidably installed at the top of the inner wall of the cutting chamber. Since the small-hole baffle can only rotate in the right direction, the sliding speed of the pneumatic piston is not affected when it slides to the right, while the sliding speed of the pneumatic piston is affected when it slides to the left.

[0010] According to the above technical solution, the air pump and the air valve are connected by a first air pipe. The air nozzle and the air valve are connected by a second air pipe. The one-way rotating rod is located on the movement track of the pulley top rod. The rear part of the one-way rotating rod rotates in the right direction. The air valve is located on the movement track of the one-way rotating rod. The left side of the pneumatic piston is fixedly connected to the rear part of the pulley top rod. The bi-directional elastic rod is located on the movement track of the pneumatic piston. The top of the bi-directional elastic rod is rotatably connected to the bottom of the bolt. A pin slot is opened at the top of the hatch door. The pin slot is located on the movement track of the bolt. An air inlet hole is opened on the surface of the small-hole baffle. A one-way top block is arranged at the rear part of the one-way rotating rod. The air inlet hole opened on the small-hole baffle restricts the rate of air passing through the small-hole baffle, thereby slowing down the speed of the pneumatic piston when it slides to the left. At the same time, the bi-directional elastic rod and the bolt realize secondary limiting of the hatch door, that is, the delayed opening when the hatch door is opened is realized.

[0011] According to the above technical solution, an auxiliary cleaning device is arranged inside the cutting chamber. The auxiliary cleaning device includes a waste box, a telescopic lowering rod, a bar magnet, a telescopic pressing rod, and a magnet scraper. The waste box is fixedly installed at the bottom of the cutting chamber. The telescopic lowering rod is slidably connected to the rear part of the inner wall of the cutting chamber. The bar magnet is fixedly installed at the rear part of the inner wall of the cutting chamber. The magnet scraper is slidably installed on the side surface of the inner wall of the cutting chamber. The telescopic pressing rod is rotatably installed at the top of the magnet scraper. The attraction of the bar magnet to metals such as iron, cobalt, and nickel can adsorb the metal debris inside the cutting chamber, thereby achieving the effect of auxiliary cleaning inside the cutting chamber.

[0012] According to the above technical solution, the auxiliary cleaning device further includes a sealing door, a Z-shaped vertical rod, and a spring iron bead. The sealing door is rotatably connected to the bottom of the inner wall of the cutting chamber. The Z-shaped vertical rod is fixedly connected to the top of the magnet scraper. The spring iron bead is rotatably installed on the left side of the top of the Z-shaped vertical rod. The sealing door realizes opening the sealing door and collecting the metal debris into the waste box only after the magnet scraper scrapes the surface of the bar magnet, avoiding the dusting of the internal metal debris caused by the long-term opening of the waste box.

[0013] According to the above technical solution, a second rotating link is fixedly connected to the rear of the hatch door. The front of the telescopic lowering rod is rotatably connected to the second rotating link. The telescopic pressing rod is located on the movement track of the telescopic lowering rod. The rear of the magnet scraper is in contact with the front of the strip magnet. The sealing door is located on the movement track of the magnet scraper. A first knocking piece is fixedly connected to the bottom on the right side of the telescopic lowering rod, and a second knocking piece is fixedly connected to the top on the right side of the telescopic lowering rod. The first knocking piece is located on the movement track of the elastic piece with iron beads, and the second knocking piece is located on the movement track of the elastic piece with iron beads. The movement of the elastic piece with iron beads and the contact with the second knocking piece enable the elastic piece with iron beads to vibrate and make a sound by knocking the second knocking piece when the metal debris inside the waste box is collected to a certain extent, thereby reminding the staff to clean the metal debris inside the waste box in time.

[0014] The present invention provides a metal laser cutting device, which has the following beneficial effects: (1) In this invention, by driving the door clamping rod to slide through the pull ring to release the limit between the hatch door and the cutting chamber, it is necessary to use both hands to close the hatch door before the device starts processing, avoiding the situation where the other hand is accidentally placed incorrectly when the staff operates with one hand, thus preventing pinching. After closing the hatch door, the door clamping rod drives the bidirectional telescopic rod through the pulley top rod to release the limit of the transverse moving beam with the cross beam block, realizing that the laser cutting tool can move for processing only after the hatch door is completely closed, avoiding the laser cutting tool directly processing before the hatch door is closed and causing harm to the staff.

[0015] (2) In this invention, the pulley top rod drives the air valve through the one-way rotating rod to open the air nozzle to spray and clean the inside of the cutting chamber, realizing the automatic cleaning of the workpiece surface when the hatch door is opened after the device finishes processing. At the same time, due to the sliding of the air piston driving the bolt to perform secondary limiting on the hatch door, and a small hole blocking piece is rotatably connected to the right side of the piston sleeve, realizing the delayed opening when the hatch door is opened, avoiding the dust raising caused by immediately opening the hatch door after the air nozzle sprays and cleans, and further ensuring the safety of the staff.

[0016] (3) In this invention, the strip magnet is used to adsorb the metal debris on the inner wall of the cutting chamber. At the same time, the hatch door drives the magnet scraper to scrape and clean and collect the metal debris accumulated on the surface of the strip magnet through the second rotating link and the telescopic lowering rod. After the metal debris is collected to a certain amount, the Z-shaped vertical rod drives the elastic piece with iron beads to knock the second knocking piece to make a prompt, thereby reminding the staff to clean the debris in the waste box in time, ensuring the stability of the device during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the cutting chamber of the present invention; Figure 3 Schematic diagram of the door card rod and pulley top rod structure of the present invention; Figure 4 Schematic diagram of the cleaning device structure of the present invention; Figure 5 Schematic diagram of the piston sleeve and small hole baffle structure of the present invention; Figure 6 Schematic diagram of the bi-directional elastic rod and bolt structure of the present invention; Figure 7 Schematic diagram of the auxiliary cleaning device structure of the present invention; Figure 8 Schematic diagram of the Z-shaped vertical rod and elastic piece iron bead structure of the present invention; Figure 9 Schematic diagram of the top structure of the cabin door of the present invention.

[0018] In the figure: 1. Cutting cabin; 2. Support base; 3. Control panel; 4. Cabin door; 5. Air pump; 6. Longitudinal moving beam; 7. Transverse moving beam; 8. Laser cutter; 901. Pull ring; 902. Steel wire rope; 903. Pulley block; 904. Door card rod; 905. Pulley top rod; 906. Bi-directional telescopic rod; 907. Cross beam block; 1001. Air nozzle; 1002. One-way rotating rod; 1003. Air valve; 1004. Piston sleeve; 1005. Air piston; 1006. Small hole baffle; 1007. Bi-directional elastic rod; 1008. Bolt; 1101. Scrap box; 1102. Telescopic lowering rod; 1103. Strip magnet; 1104. Telescopic pressing rod; 1105. Magnet scraper; 1106. Sealed door; 1107. Z-shaped vertical rod; 1108. Elastic piece iron bead. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-9, a metal laser cutting device, comprising a cutting chamber 1, a support base 2 fixedly installed at the bottom of the cutting chamber 1, a control panel 3 arranged at the front of the cutting chamber 1, a hatch 4 rotatably connected to the top of the cutting chamber 1, an air pump 5 fixedly installed at the rear of the cutting chamber 1, a longitudinal moving beam 6 fixedly installed on the left side of the inner wall of the cutting chamber 1, a transverse moving beam 7 slidably connected to the top of the longitudinal moving beam 6, a laser cutter 8 slidably installed at the front of the transverse moving beam 7, a pull ring 901 slidably installed at the front of the hatch 4, a steel wire rope 902 fixedly connected to the rear of the pull ring 901, a pulley set 903 arranged at the bottom of the hatch 4, a door locking rod 904 slidably installed at the bottom of the hatch 4, the pull ring 901 being fixedly connected to the left side of the door locking rod 904 through the steel wire rope 902, a pulley top rod 905 slidably installed at the top of the inner wall of the cutting chamber 1, a bidirectional telescopic rod 906 rotatably installed on the side of the inner wall of the cutting chamber 1, a cross beam stopper 907 fixedly connected to the rear of the bidirectional telescopic rod 906 through a rotating connecting rod. By driving the door locking rod 904 to slide through the pull ring 901 to release the limit between the hatch 4 and the cutting chamber 1, it is necessary to use both hands simultaneously to close the hatch 4 before the device performs processing, avoiding pinching caused by staff negligence. After closing the hatch 4, the door locking rod 904 drives the bidirectional telescopic rod 906 and the cross beam stopper 907 to release the limit of the transverse moving beam 7 through the pulley top rod 905, realizing that the laser cutter 8 can move for processing only after the hatch 4 is completely closed, avoiding direct processing by the laser cutter 8 before the hatch 4 is closed and causing harm to the staff.

[0021] The rear parts of two pull rings 901 are both fixedly connected to a door locking rod 904 through a steel wire rope 902. A return spring is arranged between the door locking rod 904 and the hatch 4. The bottom of the door locking rod 904 contacts the top of the cutting chamber 1. A second return spring is arranged between the pulley top rod 905 and the cutting chamber 1. The pulley top rod 905 is located on the movement track of the door locking rod 904. The bidirectional telescopic rod 906 is located on the movement track of the pulley top rod 905. The rear part of the cross beam stopper 907 contacts the front part of the transverse moving beam 7. The rebounding force of the return spring realizes re-limiting the hatch 4 after the hatch 4 is completely closed, realizing that the hatch 4 will not suddenly open due to external force factors during the processing of the device.

[0022] A cleaning device is arranged inside the cutting chamber 1. The cleaning device comprises an air nozzle 1001, a unidirectional rotating rod 1002 and an air valve 1003. The air nozzle 1001 is fixedly installed on the top of the inner wall of the cutting chamber 1. The unidirectional rotating rod 1002 is rotatably installed on the top of the inner wall of the cutting chamber 1. The air valve 1003 is fixedly installed on the top of the inner wall of the cutting chamber 1. The unidirectional rotating rod 1002 and the air valve 1003 realize that only when the front end of the unidirectional rotating rod 1002 rotates will it drive the air valve 1003 to rotate and open the air valve 1003, so that the air nozzle 1001 jets air to clean the surface of the workpiece.

[0023] The cleaning device further includes a piston sleeve 1004, a pneumatic piston 1005, a small-hole baffle 1006, a bi-directional spring rod 1007, and a bolt 1008. The piston sleeve 1004 is fixedly installed at the top of the inner wall of the cutting chamber 1. The pneumatic piston 1005 is slidably connected to the inner wall of the piston sleeve 1004. The small-hole baffle 1006 is rotatably connected to the right side of the piston sleeve 1004. The bi-directional spring rod 1007 is rotatably installed at the top of the inner wall of the cutting chamber 1. The bolt 1008 is slidably installed at the top of the inner wall of the cutting chamber 1. Since the small-hole baffle 1006 can only rotate in the right direction, its sliding speed of the pneumatic piston 1005 is not affected when it slides to the right, while its sliding speed will be affected when the pneumatic piston 1005 slides to the left.

[0024] An air pump 5 is connected to a pneumatic valve 1003 through a first air pipe. An air nozzle 1001 is connected to the pneumatic valve 1003 through a second air pipe. The one-way rotating rod 1002 is located on the movement track of the pulley top rod 905. The rear part of the one-way rotating rod 1002 rotates in the right direction. The pneumatic valve 1003 is located on the movement track of the one-way rotating rod 1002. The left side of the pneumatic piston 1005 is fixedly connected to the rear part of the pulley top rod 905. The bi-directional spring rod 1007 is located on the movement track of the pneumatic piston 1005. There is a rotational connection between the top of the bi-directional spring rod 1007 and the bottom of the bolt 1008. A pin slot is opened at the top of the hatch door 4, and the pin slot is located on the movement track of the bolt 1008. An air inlet hole is opened on the surface of the small-hole baffle 1006. A one-way top block is arranged at the rear part of the one-way rotating rod 1002. The air inlet hole opened on the small-hole baffle 1006 limits the rate of air passing through the small-hole baffle 1006, thereby slowing down the speed of the pneumatic piston 1005 when it slides to the left. At the same time, the bi-directional spring rod 1007 and the bolt 1008 achieve secondary limiting of the hatch door 4, that is, the delayed opening when the hatch door 4 is opened. Since a one-way top block is arranged at the rear part of the one-way rotating rod 1002, when the rear part of the one-way rotating rod 1002 rotates to the left, it rotates under the contact limiting action of the one-way top block, while the one-way top block cannot perform contact limiting when its rear part rotates to the right. Therefore, the rotation direction of the one-way rotating rod 1002 is that its front end rotates to the right.

[0025] An auxiliary cleaning device is arranged inside the cutting chamber 1. The auxiliary cleaning device includes a waste box 1101, a telescopic lowering rod 1102, a bar magnet 1103, a telescopic pressing rod 1104, and a magnet scraper 1105. The waste box 1101 is fixedly installed at the bottom of the cutting chamber 1. The telescopic lowering rod 1102 is slidably connected to the rear part of the inner wall of the cutting chamber 1. The bar magnet 1103 is fixedly installed at the rear part of the inner wall of the cutting chamber 1. The magnet scraper 1105 is slidably installed on the side surface of the inner wall of the cutting chamber 1. The telescopic pressing rod 1104 is rotatably installed at the top of the magnet scraper 1105. The attraction of the bar magnet 1103 to metals such as iron, cobalt, and nickel can adsorb the metal debris inside the cutting chamber 1, thereby achieving the effect of auxiliary cleaning inside the cutting chamber 1.

[0026] The auxiliary cleaning device further includes a sealing door 1106, a Z-shaped vertical rod 1107 and a spring piece iron bead 1108. The sealing door 1106 is rotatably connected to the bottom of the inner wall of the cutting chamber 1. The Z-shaped vertical rod 1107 is fixedly connected to the top of the magnet scraper 1105. The spring piece iron bead 1108 is rotatably installed on the left side of the top of the Z-shaped vertical rod 1107. The sealing door 1106 enables the sealing door 1106 to be opened only after the magnet scraper 1105 scrapes the surface of the bar magnet 1103, and the metal chips are collected into the waste box 1101, avoiding the dust generated by the internal metal chips in the waste box 1101 due to the long-term opening of the waste box 1101.

[0027] A second rotating link is fixedly connected to the rear of the hatch 4. The front of the telescopic lowering rod 1102 is rotatably connected to the second rotating link. The telescopic pressing rod 1104 is located on the movement track of the telescopic lowering rod 1102. The rear of the magnet scraper 1105 is in contact with the front of the bar magnet 1103. The sealing door 1106 is located on the movement track of the magnet scraper 1105. A first knocking piece is fixedly connected to the bottom of the right side of the telescopic lowering rod 1102, and a second knocking piece is fixedly connected to the top of the right side of the telescopic lowering rod 1102. The first knocking piece is located on the movement track of the spring piece iron bead 1108, and the second knocking piece is located on the movement track of the spring piece iron bead 1108. The movement of the spring piece iron bead 1108 and the contact with the second knocking piece enable the spring piece iron bead 1108 to vibrate and make a sound by knocking the second knocking piece when the internal metal chips in the waste box 1101 are collected to a certain extent, thus reminding the staff that they need to clean the internal metal chips in the waste box 1101 in time.

[0028] During operation: Before the device enters the working state, first open the hatch door 4, then place the workpiece to be processed into the cutting chamber 1, and then close the hatch door 4. When closing the hatch door 4, the operator needs to pull the pull ring 901 with both hands simultaneously. When the pull ring 901 is pulled, it slides downward. When the pull ring 901 slides downward, it drives the door locking rod 904 to slide in the direction close to the hatch door 4 through the steel wire rope 902. After the door locking rod 904 slides, it disengages from the cutting chamber 1. After the disengagement, the limit between the hatch door 4 and the cutting chamber 1 is released, so that the hatch door 4 can rotate downward. The need to pull with both hands simultaneously to close the hatch door 4 avoids the operator's negligence and the resulting hand pinch. When the hatch door 4 rotates downward to the bottom, that is, when the hatch door 4 is completely closed, the operator's hands are disengaged from the pull ring 901. After disengaging from the pull ring 901, the door locking rod 904 slides in the opposite direction under the elastic force of the return spring, that is, it re-limits the hatch door 4. At the same time, the sliding of the door locking rod 904 drives the pulley ejector rod 905 to slide to the right through contact. The sliding of the pulley ejector rod 905 drives the front end of the double telescopic rod 906 to rotate downward through contact. When the front end of the double telescopic rod 906 rotates downward, its rear end rotates upward. The upward rotation of the rear end of the double telescopic rod 906 drives the cross beam stopper 907 to slide upward through the rotating link. After the cross beam stopper 907 slides upward, the rear part of it disengages from the front part of the cross moving beam 7, that is, the limit of the cross moving beam 7 is released, so that the cross moving beam 7 can slide forward, realizing that only when the hatch door 4 is completely closed can the cross moving beam 7 move, avoiding the laser cutter 8 directly processing the workpiece when the hatch door 4 is not completely closed and causing harm to the operator.

[0029] When the pulley ejector rod 905 slides to the right, its side contacts the rear part of the one-way rotating rod 1002. However, since the rear part of the one-way rotating rod 1002 can only rotate to the right, after the pulley ejector rod 905 slides a certain distance, it will disengage from the one-way rotating rod 1002. That is, when the pulley ejector rod 905 slides to the right, it does not drive the front part of the one-way rotating rod 1002 to rotate. When the pulley ejector rod 905 slides to the right, it drives the air piston 1005 to slide to the right together. When the air piston 1005 slides to the right, the air on its right side will squeeze the air inside the piston sleeve 1004, and the squeezed air will push the small-hole baffle 1006 to rotate. That is, it is ensured that the sliding speed of the air piston 1005 and the pulley ejector rod 905 when sliding to the right is not affected. At the same time, when the air piston 1005 slides to the right, it drives the bottom of the double-sided elastic rod 1007 to rotate to the right through contact. The rotation of the bottom of the double-sided elastic rod 1007 to the right drives the top of the double-sided elastic rod 1007 to rotate to the left. The rotation of the top of the double-sided elastic rod 1007 drives the bolt 1008 to slide to the left. After the bolt 1008 slides, its bottom contacts the top of the pin slot, which realizes the secondary limit of the hatch door 4, so that the hatch door 4 still cannot be opened after the door latch rod 904 disengages from the cutting chamber 1. When the device finishes processing, when the staff opens the hatch door 4, they first pull down the pull ring 901. The downward sliding of the pull ring 901 drives the door latch rod 904 to slide to the left through the steel wire rope 902. After the door latch rod 904 slides, it disengages from the pulley ejector rod 905. After disengagement, the pulley ejector rod 905 slides to the left under the rebounding force of the second return spring. Since the rear part of the one-way rotating rod 1002 cannot slide to the left, when the pulley ejector rod 905 slides, its side drives the front end of the one-way rotating rod 1002 to rotate to the right through contact with the one-way rotating rod 1002. The rotation of the one-way rotating rod 1002 drives the air valve 1003 to rotate and open the air valve 1003 through contact. After the air valve 1003 is opened, the air pump 5 pumps air into the air valve 1003 through the first air pipe and then into the air nozzle 1001 through the second air pipe, so that the air is ejected from the air nozzle 1001. That is, when the staff opens the hatch door 4, the air nozzle 1001 jets air on the surface of the workpiece to facilitate the subsequent removal of the workpiece by the staff. At the same time as the pulley ejector rod 905 slides to the left, it drives the air piston 1005 to slide to the left together. When the air piston 1005 slides to the left, it sucks air from the outside into the piston sleeve 1004. Since the small-hole baffle 1006 cannot rotate to the left, the air can only enter the piston sleeve 1004 through the air inlet hole of the small-hole baffle 1006, which slows down the sliding speed of the air piston 1005 and the pulley ejector rod 905 when sliding to the left.When the air piston 1005 slides to the left, it drives the bolt 1008 to slide to the right through the bi-directional elastic rod 1007. After the bolt 1008 slides to the right by a certain distance, the bottom of it is disengaged from the pin slot, that is, the second limit of the hatch 4 is released, enabling the hatch 4 to rotate and open. Thus, when the staff wants to open the hatch 4, they cannot open it immediately at the first time, avoiding the generation of dust caused by immediately opening the hatch 4 after the air nozzle 1001 jets air to clean the surface of the workpiece, which may lead to the staff inhaling metal dust.

[0030] After the air nozzle 1001 jets air to clean the surface of the workpiece, the bar magnet 1103 adsorbs the floating metal debris by magnetic force, thus reducing the dust generation phenomenon and achieving the effect of auxiliary cleaning. When the hatch 4 rotates upward, the transmission link two fixedly connected to its rear part rotates together and drives the telescopic lowering rod 1102 to slide downward. When the telescopic lowering rod 1102 slides downward, it drives the telescopic pressure rod 1104 to slide downward through contact. The sliding of the telescopic pressure rod 1104 drives the magnet scraper 1105 to slide downward. The downward sliding of the magnet scraper 1105 realizes the scraping of the metal debris adsorbed and accumulated on the surface of the bar magnet 1103. When the magnet scraper 1105 continues to slide downward, its bottom drives the sealing door 1106 to rotate through contact, thus realizing the collection of the scraped metal debris into the waste box 1101. When the metal debris collected in the waste box 1101 reaches a certain amount, the bottom of the sealing door 1106 will contact the metal debris and cause the sealing door 1106 to be unable to continue rotating downward. The inability of the sealing door 1106 to rotate downward makes the magnet scraper 1105 unable to continue sliding downward after contacting it. When the magnet scraper 1105 cannot slide downward, the telescopic pressure rod 1104 will be compressed under the drive of the telescopic lowering rod 1102, that is, the distance between the telescopic lowering rod 1102 and the magnet scraper 1105 will decrease. When this distance decreases to a certain extent, the elastic bead 1108 on the left side of the top of the Z-shaped vertical rod 1107 will contact the first percussion piece. At this time, if this distance continues to decrease, that is, when the telescopic lowering rod 1102 continues to slide downward, the elastic bead 1108 will be extruded and deformed to store elastic potential energy. When this distance continues to decrease, the elastic bead 1108 will be disengaged from the first percussion piece. Due to the storage of a certain amount of elastic potential energy, when disengaged, the elastic bead 1108 will quickly rotate upward under the elastic force to return to its initial position and contact the bottom of the second percussion piece and strike it. After being struck, the second percussion piece vibrates and makes a sound, that is, when the waste box 1101 collects excessive metal debris, it makes a sound by the vibration of the second percussion piece to remind the staff to clean the waste box 1101 in time.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal laser cutting device, comprising a cutting chamber (1), characterized in that: A support base (2) is fixedly installed at the bottom of the cutting chamber (1). A control panel (3) is arranged at the front of the cutting chamber (1). A hatch door (4) is rotatably connected to the top of the cutting chamber (1). An air pump (5) is fixedly installed at the rear of the cutting chamber (1). A longitudinal moving beam (6) is fixedly installed on the left side of the inner wall of the cutting chamber (1). A transverse moving beam (7) is slidably connected to the top of the longitudinal moving beam (6). A laser cutter (8) is slidably installed at the front of the transverse moving beam (7). Two pull rings (901) are slidably installed at the front of the hatch door (4). A steel wire rope (902) is fixedly connected to the rear of the pull ring (901). A pulley block (903) is arranged at the bottom of the hatch door (4). A door clamping rod (904) is slidably installed at the bottom of the hatch door (4). The pull ring (901) is fixedly connected to the left side of the door clamping rod (904) through the steel wire rope (902). A pulley top rod (905) is slidably installed at the top of the inner wall of the cutting chamber (1). A bidirectional telescopic rod (906) is rotatably installed on the side of the inner wall of the cutting chamber (1). The rear of the bidirectional telescopic rod (906) is fixedly connected to a cross beam stopper (907) through a rotating connecting rod.

2. A metal laser cutting device according to claim 1, characterized in that: The rear parts of the two pull rings (901) are fixedly connected to a door clamping rod (904) through a steel wire rope (902). A return spring is arranged between the door clamping rod (904) and the hatch door (4). The bottom of the door clamping rod (904) contacts the top of the cutting chamber (1). A second return spring is arranged between the pulley top rod (905) and the cutting chamber (1). The pulley top rod (905) is located on the movement track of the door clamping rod (904). The bidirectional telescopic rod (906) is located on the movement track of the pulley top rod (905). The rear of the cross beam stopper (907) contacts the front of the transverse moving beam (7).

3. A metal laser cutting device according to claim 2, characterized in that: A cleaning device is arranged inside the cutting chamber (1). The cleaning device includes an air nozzle (1001), a unidirectional rotating rod (1002) and an air valve (1003). The air nozzle (1001) is fixedly installed on the top of the inner wall of the cutting chamber (1). The unidirectional rotating rod (1002) is rotatably installed on the top of the inner wall of the cutting chamber (1). The air valve (1003) is fixedly installed on the top of the inner wall of the cutting chamber (1).

4. A metal laser cutting device according to claim 3, characterized in that: The cleaning device further includes a piston sleeve (1004), an air piston (1005), a small hole baffle (1006), a bidirectional spring rod (1007) and a bolt (1008). The piston sleeve (1004) is fixedly installed on the top of the inner wall of the cutting chamber (1). The air piston (1005) is slidably connected to the inner wall of the piston sleeve (1004). The small hole baffle (1006) is rotatably connected to the right side of the piston sleeve (1004). The bidirectional spring rod (1007) is rotatably installed on the top of the inner wall of the cutting chamber (1). The bolt (1008) is slidably installed on the top of the inner wall of the cutting chamber (1).

5. A metal laser cutting device according to claim 4, characterized in that: The air pump (5) is connected to the air valve (1003) through a first air pipe. The air nozzle (1001) is connected to the air valve (1003) through a second air pipe. The one-way rotating rod (1002) is located on the movement track of the pulley top rod (905). The air valve (1003) is located on the movement track of the one-way rotating rod (1002). The left side of the air piston (1005) is fixedly connected to the rear part of the pulley top rod (905). The double-sided elastic rod (1007) is located on the movement track of the air piston (1005). The top of the double-sided elastic rod (1007) is rotatably connected to the bottom of the bolt (1008). A pin slot is provided at the top of the hatch door (4), and the pin slot is located on the movement track of the bolt (1008). The surface of the small hole baffle (1006) is provided with an air inlet hole, and a one-way top block is arranged at the rear part of the one-way rotating rod (1002).

6. A metal laser cutting device according to claim 5, characterized in that: An auxiliary cleaning device is arranged inside the cutting chamber (1). The auxiliary cleaning device includes a waste box (1101), a telescopic lowering rod (1102), a bar magnet (1103), a telescopic pressing rod (1104) and a magnet scraping plate (1105). The waste box (1101) is fixedly installed at the bottom of the cutting chamber (1). The telescopic lowering rod (1102) is slidably connected to the rear inner wall of the cutting chamber (1). The bar magnet (1103) is fixedly installed at the rear inner wall of the cutting chamber (1). The magnet scraping plate (1105) is slidably installed on the side inner wall of the cutting chamber (1). The telescopic pressing rod (1104) is rotatably installed at the top of the magnet scraping plate (1105).

7. A metal laser cutting device according to claim 6, characterized in that: The auxiliary cleaning device further includes a sealing door (1106), a Z-shaped vertical rod (1107) and a spring piece iron bead (1108). The sealing door (1106) is rotatably connected to the bottom inner wall of the cutting chamber (1). The Z-shaped vertical rod (1107) is fixedly connected to the top of the magnet scraping plate (1105). The spring piece iron bead (1108) is rotatably installed at the left side of the top of the Z-shaped vertical rod (1107).

8. A metal laser cutting device according to claim 7, characterized in that: A second rotating connecting rod is fixedly connected to the rear part of the hatch door (4). The front part of the telescopic lowering rod (1102) is rotatably connected to the second rotating connecting rod. The telescopic pressing rod (1104) is located on the movement track of the telescopic lowering rod (1102). The rear part of the magnet scraping plate (1105) contacts the front part of the bar magnet (1103). The sealing door (1106) is located on the movement track of the magnet scraping plate (1105). A first knocking piece is fixedly connected to the bottom right side of the telescopic lowering rod (1102), and a second knocking piece is fixedly connected to the top right side of the telescopic lowering rod (1102). The first knocking piece is located on the movement track of the spring piece iron bead (1108), and the second knocking piece is located on the movement track of the spring piece iron bead (1108).

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