A laser cutting device for processing metal sheets of display stands

Abstract

This invention provides a laser cutting device for processing metal shelves in display racks, relating to the field of laser cutting devices. It includes: a machine body, with a front-to-back moving mechanism mounted on the upper part of the machine body, a left-to-right moving mechanism mounted above the front-to-back moving mechanism, and a laser cutting head mounted on the lower front end of the left-to-right moving mechanism; a support plate is fixedly connected to the front side of the left-to-right moving mechanism, and a dust filter box is mounted on the upper part of the support plate; a cleaning mechanism and a reciprocating sweeping mechanism are respectively arranged on the upper and lower sides inside the dust filter box. Through the arrangement of the reciprocating sweeping mechanism and the cleaning mechanism, the accumulated material on the primary filter screen can be automatically cleaned, thereby reducing the workload and ensuring production efficiency. This solves the problem that in existing laser cutting devices, after long-term use, a large amount of impurities easily accumulate on the surface of the primary filter screen, affecting dust removal efficiency, and the cleaning operation is cumbersome, burdening the workers.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, and in particular to a laser cutting device for processing metal shelves of display racks. Background Technology

[0002] In the modern commercial display field, display racks serve as a crucial medium for product display, and their manufacturing process and quality directly impact the display effect and user experience. Metal shelves for display racks, due to their high strength and durability, are widely used in the production of various types of display racks. These metal shelves are typically made of stainless steel, aluminum alloy, or other metal sheets and require high-precision cutting. Laser cutting equipment, with its high precision and efficiency, has become one of the key processing tools for manufacturing metal shelves for display racks.

[0003] However, in the actual production process of metal shelves for display racks, although existing laser cutting equipment is equipped with a dust purification structure that can intercept large particles of dust generated by laser cutting through a primary filter, after long-term operation, the primary filter is prone to accumulating a large amount of impurities on its surface, affecting the dust removal efficiency. When cleaning the accumulated debris, workers need to disassemble the sealing plate on the filter box to clean the accumulated debris, which puts a burden on the workers. Furthermore, cleaning the debris accumulated on the surface of the primary filter requires stopping the machine, which is not conducive to efficient production. Moreover, the sealing plate is usually fixed with multiple bolts, which means that tools are needed when disassembling the sealing plate, thus greatly reducing the convenience of the internal structure of the filter box during later maintenance. Summary of the Invention

[0004] This invention relates to a laser cutting device for processing metal shelves in display racks. Through the configuration of a reciprocating sweeping mechanism and a blockage-clearing mechanism, it can automatically clean the accumulated material on the primary filter screen, thereby reducing workload while ensuring production efficiency. The device's design, including the drive housing, guide port, spring guide rod, pull plate, and F-shaped guide plate, allows for easy disassembly of the sealing plate without any tools, greatly improving the convenience of later maintenance of the internal structure of the dust filter box. The locking block, when the limiting plate completes its closing action, releases the pull plate, and the locking block reaches the position between the two latches, locking and limiting the two latches, thus significantly improving the stability of the limiting plate in the closed state.

[0005] In a first aspect, the present invention provides a laser cutting device for processing metal shelves of display racks, specifically comprising: a machine body, wherein a front-to-back moving mechanism is mounted on the upper part of the machine body, a left-to-right moving mechanism is mounted on the upper part of the front-to-back moving mechanism, and a laser cutting head is mounted on the lower front end of the left-to-right moving mechanism; a support plate is fixedly connected to the front side of the left-to-right moving mechanism, and a dust filter box is mounted on the upper part of the support plate; a cleaning mechanism and a reciprocating sweeping mechanism are respectively provided on the upper and lower sides inside the dust filter box; and a limit plate is rotatably connected to the left side of the dust filter box via a rotating shaft. A linkage shaft is rotatably connected to the right end face of the dust filter box; a drive housing is provided at the right end of the limiting plate; the reciprocating sweeping mechanism includes sweeping brushes, and there are three sweeping brushes. The three sweeping brushes are fixedly connected by two rectangular fixing plates. A transverse guide rod fixed inside the dust filter box is slidably connected to the three sweeping brushes. A lead screw nut is fixedly embedded on the middle sweeping brush. A reciprocating lead screw is connected inside the lead screw nut. The reciprocating lead screw is rotatably connected to the dust filter box. A folded tube is sleeved on both the left and right sides of the reciprocating lead screw.

[0006] Furthermore, the opposite ends of the two folded tubes are fixedly connected to the left and right sides of the inside of the dust filter box, and the opposite sides of the two folded tubes are fixedly connected to the left and right sides of the screw nut.

[0007] Furthermore, a first bevel gear is installed at the right end of the reciprocating screw, and a second bevel gear and a linkage gear are installed at the upper and lower ends of the linkage shaft, respectively, with the first bevel gear meshing with the second bevel gear; a rack is fixedly installed on the front end face of the forward and backward moving mechanism through a bracket, and the rack meshes with the linkage gear; a first pulley is installed at the left end of the reciprocating screw.

[0008] Furthermore, a rigid suction pipe is fixedly connected to each of the two air inlets on the rear side of the dust filter box, penetrating the support plate, and a dust suction hood is installed at the lower end of each of the two rigid suction pipes. The two dust suction hoods are located on the left and right sides of the laser cutting head, respectively. The air outlet at the upper end of the dust filter box is fixedly connected to the air intake of the suction fan, and the suction fan is installed on the top of the dust filter box. The air outlet of the suction fan is connected to a flexible air supply hose.

[0009] Furthermore, a positioning block is fixedly connected to each of the four corners inside the dust filter box, and each positioning block has a positioning hole. A positioning rod is movably inserted into each positioning hole, and a sealing plate is fixedly connected to the front end of the four positioning rods. A frame-shaped partition is fixedly connected inside the dust filter box, and a H-shaped sealing gasket is pasted on the front end face of the dust filter box and the frame-shaped partition. A snap-fit ​​plate is fixedly connected to the right end face of the dust filter box, and a snap-fit ​​notch is opened in the middle of the right side of the snap-fit ​​plate.

[0010] Furthermore, a vertical guide rod is fixedly connected to each of the four corners of the upper surface of the frame-shaped partition. A spring is fitted around the outside of each vertical guide rod between the frame-shaped partition and the support frame. A circular limiting block is provided at the upper end of each vertical guide rod. The support frame is slidably connected to the outside of the four vertical guide rods. The lower part of the support frame penetrates the inside of the frame-shaped partition, and the lower part of the support frame is equal to the inner part of the frame-shaped partition. A primary filter screen is fixedly connected to the bottom of the support frame. The bristles on the three cleaning brushes are in contact with the lower surface of the primary filter screen. Two vibrating plates are fixedly connected to the upper surface of the support frame. A dust collection box is placed inside the lower part of the dust filter box.

[0011] Furthermore, a fixed plate is fixedly connected to the limiting plate, and a hand-tightening screw is threadedly connected to the fixed plate. A rotating block is rotatably connected to the rear end of the hand-tightening screw. Two rectangular sliding openings are opened on the right rear end face of the limiting plate. A buckle is slidably connected inside each rectangular sliding opening, and a spring is installed inside each rectangular sliding opening. A driving column is fixedly connected to the front side of the right end face of each buckle.

[0012] Furthermore, the unblocking mechanism includes an unblocking rotating shaft and a reciprocating moving frame. The unblocking rotating shaft is rotatably connected to the dust filter box. Both the unblocking rotating shaft and the reciprocating screw pass through the left and right side walls of the machine body. A cam is fixedly installed on the outside of the unblocking rotating shaft. A lifting plate is fixedly connected to the top of the reciprocating moving frame, and the reciprocating moving frame is located outside the cam. A guide rod fixed to the upper side inside the dust filter box is slidably connected to the lifting plate. A spring is sleeved on the outside of the guide rod at the upper part of the lifting plate, and a circular limiting plate is provided at the lower end of the guide rod. A striking plate is fixedly connected to the bottom of the reciprocating moving frame, and two striking hammers are provided on the bottom surface of the striking plate. A second pulley is installed on the left end of the unblocking rotating shaft, and the second pulley is connected to the first pulley through a belt.

[0013] Furthermore, the drive housing is located outside the front end of the two buckle pieces. The right end face of the drive housing has two guide openings, which are V-shaped. The two guide openings are slidably connected to the two drive columns respectively. A spring guide rod is fixedly connected to the front end face of the drive housing. An F-shaped guide plate fixed to the front end face of the limiting plate is slidably connected to the outside of the spring guide rod. A spring is sleeved between the drive housing and the F-shaped guide plate on the outside of the spring guide rod, and a pulling plate is fixedly connected to the front end of the spring guide rod. A locking block is fixedly connected inside the drive housing.

[0014] Furthermore, when the limiting plate is in the limiting state, both latching parts are engaged with the latching notches opened on the latching plate, and at this time the locking block is located between the two latching parts.

[0015] This invention provides a laser cutting device for processing metal shelves in display racks, which has the following advantages:

[0016] Firstly, by setting up a reciprocating sweeping mechanism and a de-clogging mechanism, the linkage shaft moves left and right as the laser cutting head moves left and right. Then, through the rack and pinion, the linkage gear is forced to rotate, which in turn drives the reciprocating sweeping mechanism and the de-clogging mechanism. The reciprocating sweeping mechanism automatically cleans away the debris accumulated on the lower surface of the primary filter screen, while the de-clogging mechanism subjectes the primary filter screen to frequent downward impacts, causing the debris clogging the mesh of the primary filter screen to fall downwards. This further improves the cleaning effect of the accumulated debris on the primary filter screen. The entire cleaning process does not require disassembling the sealing plate or stopping the machine, thus reducing the workload and ensuring production efficiency.

[0017] Secondly, by setting up the housing, guide port, spring guide rod, pull plate, and F-type guide plate, the pull plate and F-type guide plate can be manually pinched to move the two buckles in opposite directions simultaneously, separating them from the snap-fit ​​notches on the snap-fit ​​plate. Then, by rotating the limiting plate, the sealing plate can be moved forward and removed. The entire disassembly process can be easily completed without any tools, greatly improving the convenience of later maintenance of the internal structure of the dust filter box and increasing the maintenance efficiency of the internal structure of the dust filter box by more than 50%.

[0018] Third, by setting the locking block, after the limit plate completes the closing action, the pull plate is released. At this time, the housing will be displaced backward under the elastic force released by the spring outside the spring guide rod. At the same time, the two guide ports on the housing will synchronously drive the two driving columns to move in opposite directions. Then, the locking block also moves backward and accurately reaches the position between the two latching parts, locking and limiting the two latching parts. In this way, the firmness of the limit plate in the closed state is significantly improved, providing a strong guarantee for the stable operation of the equipment.

[0019] Fourth, through the cooperation of the linkage shaft, linkage gear and rack, the linkage shaft can be forced to rotate during the left and right movement of the left and right moving mechanism, which ultimately drives the reciprocating sweeping mechanism and the unblocking mechanism to operate. Therefore, there is no need to configure an additional motor to provide driving force, which greatly saves costs and energy consumption. While ensuring efficient operation, it significantly improves the economy and reliability of this laser cutting device. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the accompanying drawings of the present invention will be briefly described below.

[0021] In the attached diagram:

[0022] Figure 1 A structural schematic diagram from a first perspective of this application is shown;

[0023] Figure 2 A structural schematic diagram from a second perspective of this application is shown;

[0024] Figure 3 A schematic diagram of the rack, linkage shaft, and linkage gear of this application is shown;

[0025] Figure 4 A schematic diagram of the structure of the dust filter box and the dust suction tube of this application is shown;

[0026] Figure 5 A structural schematic diagram of the dust filter housing, sealing plate, and limiting plate of this application is shown;

[0027] Figure 6 This paper shows a schematic diagram of the disassembled structure of the dust filter box and sealing plate of this application;

[0028] Figure 7 A schematic diagram of the disassembled dust filter housing, reciprocating cleaning mechanism and unclogging mechanism of this application is shown.

[0029] Figure 8 This diagram shows the disassembled structural schematic of the frame-shaped partition, support frame, and primary filter of this application.

[0030] Figure 9 This paper presents a schematic diagram of the reciprocating lead screw and folding tube after disassembly.

[0031] Figure 10 This paper shows a partial cross-sectional structural schematic diagram of the limiting plate and the driving housing of this application;

[0032] Figure 11 A schematic diagram of the structure of the pull plate of this application after it has been pulled forward to its limit position is shown.

[0033] List of reference numerals

[0034] 1. Machine body; 101. Forward and backward moving mechanism; 102. Left and right moving mechanism; 103. Laser cutting head; 104. Support plate; 105. Rack and pinion;

[0035] 2. Smoke and dust filter housing; 201. Dust suction hose; 202. Dust suction hood; 203. Fan; 204. Air supply hose; 205. Positioning rod; 206. Sealing plate; 207. H-shaped sealing gasket; 208. Clip-on plate; 209. Positioning block; 2010. Frame-shaped partition; 2011. Vertical guide rod; 2012. Support frame; 2013. Primary filter; 2014. Vibration plate; 2015. Dust collection box;

[0036] 3. Linkage shaft; 301. Linkage gear;

[0037] 4. Limiting plate; 401. Fixing plate; 402. Hand-tightening screw; 403. Rotating block; 404. Rectangular sliding opening; 405. Buckling component; 406. Driving column;

[0038] 5. Reciprocating sweeping mechanism; 501. Sweeping brush; 502. Horizontal guide rod; 503. Reciprocating lead screw; 504. Lead screw nut; 505. Folded tube;

[0039] 6. Unblocking mechanism; 601. Unblocking shaft; 602. Cam; 603. Reciprocating frame; 604. Lifting plate; 605. Guide rod; 606. Striking plate;

[0040] 7. Drive housing; 701. Guide port; 702. Spring guide rod; 703. Pull plate; 704. F-type guide plate; 705. Locking block. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. Based on the described 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.

[0042] Example 1: Please refer to Figures 1 to 11 :

[0043] This invention proposes a laser cutting device for processing metal shelves of display racks, comprising: a body 1, a front-to-back moving mechanism 101 mounted on the upper part of the body 1, a left-to-right moving mechanism 102 mounted on the upper part of the front-to-back moving mechanism 101, and a laser cutting head 103 mounted on the lower front end of the left-to-right moving mechanism 102; a support plate 104 fixedly connected to the front side of the left-to-right moving mechanism 102, and a dust filter box 2 mounted on the upper part of the support plate 104; a cleaning mechanism 6 and a reciprocating sweeping mechanism 5 respectively provided on the upper and lower sides inside the dust filter box 2; a limiting plate 4 rotatably connected to the left side of the dust filter box 2 via a rotating shaft, and a linkage shaft 3 rotatably connected to the right end face of the dust filter box 2; a driving housing 7 is provided on the right end of the limiting plate 4; the reciprocating sweeping mechanism 5 includes three sweeping brushes 501, which are fixedly connected by two rectangular fixing plates. Three cleaning brushes 501 are slidably connected to horizontal guide rods 502 fixed inside the dust filter box 2. A lead screw nut 504 is fixedly embedded in one of the cleaning brushes 501. A reciprocating lead screw 503 is connected inside the lead screw nut 504. The reciprocating lead screw 503 is rotatably connected to the dust filter box 2. A folded tube 505 is sleeved on both the left and right sides of the reciprocating lead screw 503. The opposite ends of the two folded tubes 505 are fixedly connected to the left and right sides inside the dust filter box 2, and the opposite faces of the two folded tubes 505 are fixedly connected to the left and right sides of the lead screw nut 504. The folded tubes 505 provide all-round protection for the reciprocating lead screw 503, preventing debris from falling into the spiral groove of the reciprocating lead screw 503, preventing the reciprocating lead screw 503 from jamming, improving the reliability of the reciprocating lead screw 503 during operation, and reducing the maintenance frequency and maintenance cost.

[0044] A first bevel gear is installed on the right end of the reciprocating screw 503, and a second bevel gear and a linkage gear 301 are installed on the upper and lower ends of the linkage shaft 3, respectively. The first bevel gear meshes with the second bevel gear. A rack 105 is fixedly installed on the front end face of the forward and backward moving mechanism 101 through a bracket, and the rack 105 meshes with the linkage gear 301. A first pulley is installed on the left end of the reciprocating screw 503 to drive the unblocking mechanism 6 to operate.

[0045] Two air inlets on the rear side of the dust filter box 2 are fixedly connected to a suction pipe 201 that runs through the support plate 104, and a dust hood 202 is installed at the lower end of each of the two suction pipes 201. The two dust hoods 202 are located on the left and right sides of the laser cutting head 103, respectively. The air outlet at the upper end of the dust filter box 2 is fixedly connected to the air intake of the suction fan 203, and the suction fan 203 is installed on the top of the dust filter box 2. The air outlet of the suction fan 203 is connected to a flexible air supply hose 204, and the other end of the flexible air supply hose 204 is connected to an air purification device, which can further purify the filtered flue gas.

[0046] A positioning block 209 is fixedly connected to each of the four corners inside the dust filter box 2, and each positioning block 209 has a positioning hole. A positioning rod 205 is movably inserted into each positioning hole. A sealing plate 206 is fixedly connected to the front end of the four positioning rods 205. A frame-shaped partition 2010 is fixedly connected inside the dust filter box 2, and a H-shaped sealing gasket 207 is pasted on the front end face of the dust filter box 2 and the frame-shaped partition 2010 for contact with the rear end face of the sealing plate 206 to improve the sealing effect of the sealing plate 206. A snap-fit ​​plate 208 is fixedly connected to the right end face of the dust filter box 2, and a snap-fit ​​notch is opened in the middle of the right side of the snap-fit ​​plate 208 for snap-fit ​​with the buckle 405.

[0047] A vertical guide rod 2011 is fixedly connected to each of the four corners of the upper surface of the frame-shaped partition 2010. Each vertical guide rod 2011 is fitted with a spring between the frame-shaped partition 2010 and the support frame 2012, and each vertical guide rod 2011 has a circular limiting block at its upper end. The support frame 2012 is slidably connected to the four vertical guide rods 2011. The lower part of the support frame 2012 penetrates the inner side of the frame-shaped partition 2010, and the lower part of the support frame 2012 is [not specified in the original text]. The inner dimensions of the frame-shaped partition 2010 are equal to those of the support frame 2012. A primary filter 2013 is fixedly connected to the bottom of the support frame 2012. The bristles on the three cleaning brushes 501 are in contact with the lower surface of the primary filter 2013. Two vibrating plates 2014 are fixedly connected to the upper surface of the support frame 2012. A dust collection box 2015 is placed inside the lower side of the dust filter box 2. The dust collection box 2015 is used to collect the particulate matter intercepted by the primary filter 2013.

[0048] A fixed plate 401 is fixedly connected to the limiting plate 4, and a hand-tightening screw 402 is threadedly connected to the fixed plate 401. A rotating block 403 is rotatably connected to the rear end of the hand-tightening screw 402. The rotating block 403 is used to press the sealing plate 206 to improve the sealing performance of the sealing plate 206. A rotating handwheel is provided at the front end of the hand-tightening screw 402, and a hexagonal groove is provided in the middle of the front end face of the rotating handwheel. The rotating handwheel can be further tightened by using a hexagonal wrench. Two rectangular sliding mouths 404 are provided on the rear right side of the limiting plate 4. A buckle 405 is slidably connected inside each rectangular sliding mouth 404, and a spring is installed inside each rectangular sliding mouth 404. A driving post 406 is fixedly connected to the front right end face of each buckle 405. The driving post 406 is used to cooperate with the guide port 701 to drive the buckle 405 to slide.

[0049] The unclogging mechanism 6 includes an unclogging rotating shaft 601 and a reciprocating moving frame 603. The unclogging rotating shaft 601 is rotatably connected to the dust filter box 2. Both the unclogging rotating shaft 601 and the reciprocating screw 503 pass through the left and right side walls of the machine body 1. A cam 602 is fixedly installed on the outside of the unclogging rotating shaft 601. A lifting plate 604 is fixedly connected to the top of the reciprocating moving frame 603, and the reciprocating moving frame 603 is located outside the cam 602. A guide rod 605 is slidably connected to the lifting plate 604 and fixed to the upper side inside the dust filter box 2. A spring is sleeved on the outside of the guide rod 605 above the lifting plate 604. 5. A circular limiting plate is provided at the lower end; a striking plate 606 is fixedly connected to the bottom of the reciprocating moving frame 603, and two striking hammers are provided on the bottom surface of the striking plate 606; a second pulley is installed at the left end of the unclogging shaft 601, and the second pulley is connected to the first pulley through a belt drive; the two striking hammers are respectively located above the two vibrating plates 2014; through the setting of the unclogging mechanism 6, the primary filter screen 2013 can be subjected to a downward impact force, thereby causing the debris blocked in the mesh of the primary filter screen 2013 to fall downward, thus further improving the cleaning effect of the accumulated material on the primary filter screen 2013.

[0050] Example 2, based on Example 1, such as Figure 5 , Figure 10 and Figure 11 As shown, the drive housing 7 is located outside the front end of the two fasteners 405. Two guide openings 701 are provided on the right end face of the drive housing 7. The guide openings 701 are V-shaped and are slidably connected to the two drive columns 406 respectively. A spring guide rod 702 is fixedly connected to the front end face of the drive housing 7. An F-shaped guide plate 704 fixed to the front end face of the limiting plate 4 is slidably connected to the outside of the spring guide rod 702. The outside of the spring guide rod 702 is located between the drive housing 7 and the F-shaped guide plate. A spring is sleeved between 704, and a pull plate 703 is fixedly connected to the front end of the spring guide rod 702; a locking block 705 is fixedly connected inside the housing 7; when the limiting plate 4 is in the limiting state, both buckles 405 are engaged with the buckling notch opened on the buckling plate 208, and at this time the locking block 705 is located between the two buckles 405. The locking block 705 locks and limits the two buckles 405, thereby significantly improving the firmness of the limiting plate 4 in the closed state.

[0051] The working principle of this embodiment is as follows: When it is necessary to cut the metal shelf of the display rack, the metal sheet to be processed is first placed on the machine body 1. Then, the forward and backward moving mechanism 101 moves the left and right moving mechanism 102 and the laser cutting head 103 forward and backward. The left and right moving mechanism 102 moves the laser cutting head 103 left and right. After reaching the designated position, the laser cutting head 103 cuts the metal sheet.

[0052] During the laser cutting process, by starting the suction fan 203, a negative pressure is generated inside the dust filter box 2, the two suction pipes 201, and the two suction hoods 202. Under the action of negative pressure, the dust generated during the laser cutting process is drawn into the dust filter box 2. The primary filter 2013 intercepts the large dust particles generated by the laser cutting. The filtered flue gas is then transported to the air purification equipment through the air delivery hose 204 for further purification of harmful substances in the flue gas.

[0053] During the left-right movement of the left-right moving mechanism 102, which carries the laser cutting head 103, the linkage shaft 3 moves left and right. Then, through the rack 105, the linkage gear 301 is forced to rotate, carrying the linkage shaft 3, the second bevel gear, the first bevel gear, and the reciprocating screw 503. At this time, the screw nut 504, under the action of the spiral groove on the reciprocating screw 503, moves the three cleaning brushes 501 back and forth, thus cleaning away the debris accumulated on the lower surface of the primary filter screen 2013. Simultaneously, the rotating reciprocating screw 503 drives the first pulley, the second pulley, the unclogging shaft 601, and the cam 602 to rotate. When the cam 602's protrusion rotates to the upward direction, it moves the reciprocating moving frame 603 upward. When the reciprocating moving frame 603 moves upward, it compresses the external spring of the guide rod 605. When the cam 602's protrusion rotates to the downward direction... Under the elastic force of the external spring of the guide rod 605, the lifting plate 604 moves rapidly downward along with the reciprocating moving frame 603, the striking plate 606, and the two striking hammers. This causes the two striking hammers to collide with the upper surfaces of the two vibrating plates 2014, forcing the two vibrating plates 2014, the support frame 2012, and the primary filter 2013 to generate a downward impact force. Under the frequent downward impact force, the debris blocking the mesh of the primary filter 2013 is dislodged downward, thus further improving the cleaning effect on the accumulated debris on the primary filter 2013. Moreover, during the cleaning process, the operator does not need to disassemble the sealing plate 206 on the dust filter box 2 to clean the accumulated debris, avoiding burdening the operator. Furthermore, the cleaning does not require stopping the machine, thus ensuring efficient production of the product.

[0054] When it is necessary to disassemble the sealing plate 206 to maintain the internal structure of the dust filter box 2, the maintenance personnel only need to manually pull the pull plate 703 and the F-type guide plate 704 to move the pull plate 703 forward along with the two spring guide rods 702 and the housing 7. Then, by moving the two guide ports 701 on the housing 7, the two drive columns 406 move in opposite directions, thereby moving the two fasteners 405 in opposite directions. Finally, the two fasteners 405 separate from the fastening notch on the fastening plate 208. Then, by rotating the limiting plate 4 to open it, the sealing plate 206 can be moved forward and removed. Since the disassembly process can be easily completed without the aid of tools, the convenience of the internal structure of the dust filter box 2 is greatly improved in the later maintenance.

[0055] After the maintenance work on the internal structure of the dust filter box 2 is completed, insert the four positioning rods 205 on the sealing plate 206 into the positioning holes on the four positioning blocks 209, and then rotate the limiting plate 4 to close it. During the closing process, the pulling plate 703 and the F-shaped guide plate 704 need to be pinched by hand. After the limiting plate 4 is closed, the two buckles 405 engage with the buckling notches on the buckling plate 208, so that the limiting plate 4 in the closed state can be effectively limited. At this time, the four rotating blocks 403 are tightened. The sealing plate 206 is pressed tightly against the front end face of the sealing plate 206 to fix the sealing plate 206. When the limiting plate 4 is closed, the pulling plate 703 is released, and the housing 7 moves backward under the action of the spring force of the spring guide rod 702. Then, the two guide ports 701 on the housing 7 drive the two driving columns 406 to move in opposite directions at the same time. Then the locking block 705 moves backward between the two buckle pieces 405 to lock and limit the two buckle pieces 405, thereby greatly improving the firmness of the limiting plate 4 in the closed state.

[0056] The following points should be noted in this article:

[0057] 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0058] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0059] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A laser cutting apparatus for processing a metal sheet of a display rack, comprising: The machine body (1) is equipped with a front-to-back moving mechanism (101) on its upper part, a left-to-right moving mechanism (102) on its upper part, and a laser cutting head (103) on its lower front end. The left-to-right moving mechanism (102) is characterized in that a support plate (104) is fixedly connected to the front side of the left-to-right moving mechanism (102), and a dust filter box (2) is installed on the upper part of the support plate (104). The dust filter box (2) is equipped with a blockage clearing mechanism (6) and a reciprocating sweeping mechanism (5) on its upper and lower sides respectively. The dust filter box (2) is rotatably connected to a limiting plate (4) on its left side via a rotating shaft, and a linkage shaft (3) is rotatably connected to the right end of the dust filter box (2). A drive housing (7) is provided on the right end of the limiting plate (4). The reciprocating sweeping mechanism (5) includes sweeping brushes (501), and there are three sweeping brushes (501). The three sweeping brushes (501) are fixedly connected to each other by two rectangular fixing plates. A horizontal guide rod (502) fixed inside the dust filter box (2) is slidably connected to the three sweeping brushes (501). A lead screw nut (504) is fixedly embedded on the middle sweeping brush (501). A reciprocating lead screw (503) is connected inside the lead screw nut (504). The reciprocating lead screw (503) is rotatably connected to the dust filter box (2). A folded tube (505) is sleeved on both the left and right sides of the reciprocating lead screw (503). A fixed plate (401) is fixedly connected to the limiting plate (4), and a hand screw (402) is threadedly connected to the fixed plate (401). A rotating block (403) is rotatably connected to the rear end of the hand screw (402). Two rectangular sliding openings (404) are opened on the right rear end face of the limiting plate (4). A buckle (405) is slidably connected inside each rectangular sliding opening (404), and a spring is installed inside each rectangular sliding opening (404). A driving column (406) is fixedly connected to the front side of the right end face of each buckle (405). The drive housing (7) is located outside the front end of the two buckle pieces (405). The right end face of the drive housing (7) has two guide openings (701). The guide openings (701) are V-shaped. The two guide openings (701) are slidably connected to the two drive columns (406). A spring guide rod (702) is fixedly connected to the front end face of the drive housing (7). An F-shaped guide plate (704) fixed to the front end face of the limiting plate (4) is slidably connected to the outside of the spring guide rod (702). A spring is sleeved between the drive housing (7) and the F-shaped guide plate (704) on the outside of the spring guide rod (702). A pull plate (703) is fixedly connected to the front end of the spring guide rod (702). A locking block (705) is fixedly connected inside the drive housing (7). The unblocking mechanism (6) includes an unblocking rotating shaft (601) and a reciprocating moving frame (603). The unblocking rotating shaft (601) is rotatably connected to the dust filter box (2). Both the unblocking rotating shaft (601) and the reciprocating screw (503) pass through the left and right side walls of the machine body (1). A cam (602) is fixedly installed on the outside of the unblocking rotating shaft (601). A lifting plate (604) is fixedly connected to the top of the reciprocating moving frame (603), and the reciprocating moving frame (603) is located outside the cam (602). A guide rod (605) is slidably connected to the upper side of the inside of the dust filter box (2), and a spring is sleeved on the outside of the guide rod (605) above the lifting plate (604), and a circular limiting plate is provided at the lower end of the guide rod (605); a striking plate (606) is fixedly connected to the bottom of the reciprocating moving frame (603), and two striking hammers are provided on the bottom end of the striking plate (606); a second pulley is installed on the left end of the unblocking rotating shaft (601), and the second pulley is connected to the first pulley through a belt drive.

2. The laser cutting device for processing metal sheet of a display stand according to claim 1, wherein: The two folded tubes (505) are fixedly connected to the left and right sides of the inside of the dust filter box (2) at opposite ends, and the two folded tubes (505) are fixedly connected to the left and right sides of the screw nut (504) at opposite sides.

3. The laser cutting device for processing metal sheet of a display stand according to claim 1, wherein: The right end of the reciprocating screw (503) is equipped with a first bevel gear, and the upper and lower ends of the linkage shaft (3) are respectively equipped with a second bevel gear and a linkage gear (301), with the first bevel gear meshing with the second bevel gear; the front end face of the forward and backward moving mechanism (101) is fixedly equipped with a rack (105) by a bracket, and the rack (105) meshes with the linkage gear (301); the left end of the reciprocating screw (503) is equipped with a first pulley.

4. The laser cutting device for processing metal shelves of a display rack according to claim 1, characterized in that: The dust filter box (2) has two air inlets on the rear side, each connected to a hard suction pipe (201) that passes through the support plate (104). The lower ends of the two hard suction pipes (201) are each equipped with a dust hood (202), which is located on the left and right sides of the laser cutting head (103). The upper air outlet of the dust filter box (2) is fixedly connected to the air inlet of the fan (203), and the fan (203) is installed on the top of the dust filter box (2). The air outlet of the fan (203) is connected to a flexible air supply hose (204).

5. The laser cutting device for processing metal shelves of a display rack according to claim 1, characterized in that: The dust filter box (2) has a positioning block (209) fixedly connected at each of the four corners inside, and each positioning block (209) has a positioning hole, and a positioning rod (205) is movably inserted into each positioning hole. The front ends of the four positioning rods (205) are fixedly connected to a sealing plate (206). The dust filter box (2) has a frame-shaped partition (2010) fixedly connected inside, and the dust filter box (2) and the front end face of the frame-shaped partition (2010) are pasted with a H-shaped sealing gasket (207). The right end face of the dust filter box (2) is fixedly connected to a snap-fit ​​plate (208), and a snap-fit ​​notch is opened in the middle of the right side of the snap-fit ​​plate (208).

6. The laser cutting device for processing metal shelves of a display rack according to claim 5, characterized in that: A vertical guide rod (2011) is fixedly connected to each of the four corners of the upper surface of the frame-shaped partition (2010). A spring is fitted around each vertical guide rod (2011) between the frame-shaped partition (2010) and the support frame (2012). A circular limiting block is provided at the upper end of each vertical guide rod (2011). The support frame (2012) is slidably connected to the four vertical guide rods (2011). The lower part of the support frame (2012) penetrates the frame-shaped partition (2010). The support frame (2012) is located inside the frame, and the lower part of the support frame (2012) is equal to the inner part of the frame partition (2010). The bottom of the support frame (2012) is fixedly connected to a primary filter screen (2013). The bristles on the three cleaning brushes (501) are in contact with the lower surface of the primary filter screen (2013). The upper surface of the support frame (2012) is fixedly connected to two vibrating plates (2014). A dust collection box (2015) is placed inside the lower part of the dust filter box (2).

7. The laser cutting device for processing metal shelves of a display rack according to claim 5, characterized in that: When the limiting plate (4) is in the limiting state, both latching pieces (405) are latched with the latching notch opened on the latching plate (208), and at this time the locking block (705) is located between the two latching pieces (405).

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