A printing screen laser cutting machine with cleaning structure

Abstract

The application discloses a printing screen laser cutting machine with a cleaning structure and relates to the technical field of laser cutting machines.The printing screen laser cutting machine comprises a machine body, a cross beam arranged on the machine body, and a plurality of sawtooth plates arranged on the cross beam, and further comprises: a fixing frame fixedly connected to the cross beam, a floating frame connected in abutment with the upper surface of the fixing frame; a swing assembly arranged on the floating frame, the sawtooth plates being connected to the floating frame through the swing assembly, and the swing assembly driving the sawtooth plates to rotate when the floating frame moves vertically; and a lifting assembly arranged on the fixing frame, the lifting assembly being used for driving the floating frame to move vertically.The swing assembly and the lifting assembly are arranged, the lifting assembly drives the sawtooth plates to move up and down reciprocatingly, and thus the waste materials clamped on the sawtooth plates all fall down; meanwhile, the swing assembly drives the sawtooth plates to swing when the sawtooth plates move up and down reciprocatingly, so that the waste materials can smoothly fall off the sawtooth plates.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting machines, in particular to a printing screen laser cutting machine with a cleaning structure. BACKGROUND

[0002] Laser cutting is to melt and evaporate the workpiece by the energy released when the laser beam irradiates the surface of the workpiece, so as to achieve the purpose of cutting and carving. Laser cutting technology has the characteristics of high precision, fast cutting, no limitation on cutting patterns, automatic layout to save materials, smooth cutting, low processing cost, etc. Laser cutting technology is currently most widely used in sheet metal cutting.

[0003] The current laser cutting machine cuts the printing screen by first placing the printing screen raw material on the sawtooth plate of the laser cutting machine, and then moving the laser head to cut the raw material. Since the waste material cut by the printing screen is small, it is easy to get stuck in the teeth of the sawtooth plate, and the sharp part of the sawtooth is easy to prick the hand, so it is not convenient to clean the waste material stuck in the sawtooth. SUMMARY

[0004] The purpose of the present application is to provide a printing screen laser cutting machine with a cleaning structure to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A printing screen laser cutting machine with a cleaning structure, comprising the body of a laser cutting machine, the body is provided with a cross beam, the cross beam is provided with a plurality of sawtooth plates, further comprising:

[0007] A fixing frame fixed to the cross beam, the upper surface of the fixing frame is connected with a floating frame;

[0008] A swing assembly provided on the floating frame, the sawtooth plate is connected to the floating frame through the swing assembly, and when the floating frame moves vertically, the swing assembly drives the sawtooth plate to rotate;

[0009] A lifting assembly provided on the fixing frame, the lifting assembly is used to drive the floating frame to move vertically.

[0010] Further, the lifting assembly comprises:

[0011] A rotating rod horizontally penetrating through the fixing frame, the rotating rod is free to rotate on the fixing frame, and the rotating rod is driven to rotate by a servo motor installed on the outer wall of the fixing frame;

[0012] A cam is sleeved on the rotating rod, and a floating plate is fixedly connected to the floating frame. The floating plate is located above the cam and works in conjunction with the cam.

[0013] Furthermore, multiple guide posts are vertically fixed to the fixed frame, and the floating frame has through holes for the guide posts to pass through freely. A stop ring is sleeved on the upper end of the guide post, and a spring is also wrapped around the guide post. The two ends of the spring elastically abut against the stop ring and the floating frame respectively in the direction of the spring force.

[0014] Furthermore, a slide rail is connected to the body, the slide rail is located below the fixed frame, and a vibration component is provided on the slide rail, the vibration component being used to generate a vibration force on the slide rail when the cam rotates.

[0015] Furthermore, the vibration assembly includes:

[0016] A protrusion fixed to the lower surface of the slide rail, a sliding rod vertically passing through the protrusion, the sliding rod corresponding to the cam, and the sliding rod sliding freely on the slide rail;

[0017] A floating ring is fitted onto the lower end of the sliding rod, and a tension spring is wound around the sliding rod. The two ends of the tension spring are respectively fixed to the protrusion and the floating ring.

[0018] A striking rod is fixed to the periphery of the floating ring, with one end of the striking rod extending vertically upward away from the floating ring.

[0019] Furthermore, a bumper plate is fixedly connected to the upper end of the sliding rod, and the upper surface of the bumper plate cooperates with the cam.

[0020] Furthermore, the anti-collision plate has guide portions that extend downwards and are fixed at both ends.

[0021] Furthermore, the length direction of the slide is at an angle to the horizontal plane.

[0022] Furthermore, the swing assembly includes:

[0023] Fixed blocks are fixed to both ends of the floating frame, and the fixed blocks are provided with limiting grooves in the form of through holes;

[0024] A sliding block is engaged in the limiting groove. A support shaft is fixedly connected to the lower end of the serrated plate. The two ends of the support shaft are respectively inserted through the two sliding blocks and can rotate freely. A gear is sleeved on one end of the support shaft that extends out of the sliding block. A rack column is vertically fixedly connected to the fixing frame and meshes with the gear.

[0025] Furthermore, a limiting block is fixedly attached to the sliding block, and the surface of the limiting block slides in contact with the side of the fixing block facing the outside of the fixing frame.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] The present invention provides a swing component and a lifting component. When the lifting component drives the sawtooth plate to move up and down, the waste stuck on the sawtooth plate is dropped. At the same time, when the sawtooth plate moves up and down, the swing component can drive the sawtooth plate to swing, so that the waste can fall off the sawtooth plate smoothly.

[0028] The present invention uses a slide and a vibration component to allow waste material falling from the sawtooth plate to fall onto the slide. When the sawtooth plate swings, the vibration component generates a knocking vibration on the slide, allowing the waste material to slide smoothly off the slide.

[0029] This invention triggers the lifting, swinging, and vibration components simultaneously by rotating the rotating rod, which simplifies the structure, reduces reliance on electrical control modules, and thus lowers costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a laser cutting machine for printing screens with a cleaning structure according to the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0032] Figure 3 for Figure 1 A top-view diagram of the mid-structure;

[0033] Figure 4 This is a schematic diagram of the assembled structure of the fixed frame, floating frame, and slide rail in this invention;

[0034] Figure 5 for Figure 4 Enlarged schematic diagram of the local structure at point A;

[0035] Figure 6 for Figure 4 A schematic diagram of the structure viewed from below;

[0036] Figure 7 for Figure 6 Enlarged schematic diagram of the local structure at point B;

[0037] Figure 8 for Figure 6 A schematic diagram of the central structure from the front view angle;

[0038] Figure 9This is a schematic diagram of a laser cutting machine for printing screens with a cleaning structure according to Embodiment 2 of the present invention;

[0039] Figure 10 for Figure 9 A top-view diagram of the structure after omitting the main body;

[0040] Figure 11 for Figure 10 Enlarged schematic diagram of the local structure at point C;

[0041] Figure 12 for Figure 10 A side view diagram of the mid-structure;

[0042] Figure 13 for Figure 12 Enlarged schematic diagram of the local structure at point D;

[0043] Figure 14 for Figure 12 A magnified schematic diagram of the local structure at point E in the middle.

[0044] The following are the annotations for each item in the diagram: 1. Serrated plate; 2. Body; 3. Fixing frame; 4. Crossbeam; 5. Servo motor; 6. Floating frame; 7. Slide rail; 8. Floating ring; 9. Rotating rod; 10. Spring; 11. Stop ring; 12. Limiting groove; 13. Rack column; 14. Gear; 15. Limiting block; 16. Fixing block; 17. Support shaft; 18. Striking rod; 19. Tension spring; 20. Sliding rod; 21. Protrusion; 22. Anti-collision plate; 23. Cam; 24. Floating plate. Detailed Implementation

[0045] 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.

[0046] Please see Figures 1-8This invention provides a technical solution: a laser cutting machine for printing screens with a cleaning structure, comprising a machine body 2, with horizontal beams 4 fixedly connected to both ends of the machine body 2 in the material conveying direction, and a fixed frame 3 welded to both beams 4. Guide posts are vertically welded to the top surfaces of both ends of the fixed frame 3 in the length direction, and floating frames 6 are sleeved on the four guide posts. The floating frame 6 has through holes for the guide posts to pass through freely. Multiple fixed blocks 16 are fixedly connected to both sides of the floating frame 6 in the width direction. The fixed blocks 16 have through-hole type limiting grooves 12, which are used to lock the blocks. The support shaft 17 is equipped with a sliding block that can slide freely up and down. A serrated plate 1 is welded onto the support shaft 17 with the tooth tips of the serrated plate 1 facing upward. The two ends of the support shaft 17 are respectively inserted into the two sliding blocks and can rotate freely. A gear 14 is sleeved on one end of the support shaft 17 that extends out of the sliding block. A rack column 13 is vertically fixed to the fixed frame 3 and meshes with the gear 14. A limit block 15 is fixed to the sliding block. The surface of the limit block 15 slides in contact with the side of the fixed block 16 facing the outside of the fixed frame 3. In this way, the limit block 15 can axially limit the support shaft 17 and prevent the support shaft 17 from detaching from the sliding block.

[0047] A rotating rod 9 is horizontally mounted on the fixed frame 3, allowing it to rotate freely. A motor mount is connected to the fixed frame 3, and a servo motor 5 is mounted on the motor mount. The output shaft of the servo motor 5 is connected to the rotating rod 9. A cam 23 is sleeved on the rotating rod 9. A floating plate 24 is fixedly connected to the floating frame 6, positioned above the cam 23 and working in conjunction with it. When the servo motor 5 starts, its output shaft drives the rotating rod 9 to rotate. As the rotating rod 9 rotates, it drives the cam 23 to rotate, causing the farthest end of the cam 23 to intermittently contact the floating plate 24, generating force on the floating plate 24. The upward elastic resistance causes the floating plate 24 to move upward, which in turn drives the floating frame 6 to move upward. When the floating frame 6 moves upward, the gear 14 and the rack column 13 move relative to each other, which in turn causes the gear 14 and the rack column 13 to mesh and drive the gear 14 to rotate. When the gear 14 rotates, it will drive the support shaft 17 to rotate. When the support shaft 17 rotates, it will drive the sawtooth plate 1 to rotate. At the same time, the support shaft 17 continues to rotate, which allows the floating frame 6 to move up and down back and forth, which causes the sawtooth plate 1 to vibrate the waste stuck in the teeth, so that the waste can fall smoothly from the sawtooth plate 1.

[0048] In addition, a stop ring 11 is sleeved on the upper end of the guide column. By setting the stop ring 11, the upward movement of the floating frame 6 is limited, preventing the floating frame 6 from detaching from the guide column. A spring 10 is also sleeved on the guide column. The two ends of the spring 10 elastically abut against the stop ring 11 and the floating frame 6 respectively. When the floating frame 6 moves upward, the spring 10 is in a compressed state and accumulates elastic potential energy. After the outermost edge of the cam 23 disengages from the floating plate 24, the spring 10 changes from a compressed state to an extended state, causing the floating frame 6 to move downward quickly.

[0049] The body 2 is connected to a slide rail 7, which is located below the fixed frame 3. A protrusion 21 is welded to the lower surface of the slide rail 7, and a sliding rod 20 is vertically inserted through the protrusion 21. The sliding rod 20 corresponds to the cam 23 and slides freely on the slide rail 7. A floating ring 8 is sleeved on the lower end of the sliding rod 20, and a tension spring 19 is wound around the sliding rod 20. The two ends of the tension spring 19 are respectively fixed to the protrusion 21 and the floating ring 8. An array of rings is arranged along its axial direction around the periphery of the floating ring 8. Multiple striking rods 18 are welded on, with the end of each striking rod 18 extending vertically upwards away from the floating ring 8. A bumper plate 22 is fixedly connected to the upper end of the sliding rod 20. The upper surface of the bumper plate 22 cooperates with the cam 23. When the rotating rod 9 rotates, the farthest edge of the outer edge of the cam 23 will rotate downwards and contact the upper surface of the bumper plate 22, thereby generating a downward squeezing force on the bumper plate 22. This causes the bumper plate 22 to drive the sliding rod 20 to move downwards, and causes the tension spring 19 to be in tension. In the extended state, when the farthest point of the outer edge of the cam 23 disengages from the contact state with the anti-collision plate 22, the tension spring 19 will pull the floating ring 8 upward rapidly, thereby causing the striking rod 18 to strike the protrusion 21. When the striking rod 18 strikes the protrusion 21, it will generate a vibration force on the slide rail 7. In this way, the waste material falling from the serrated plate 1 will fall into the slide rail 7 and slide down from the slide rail 7 under the action of vibration, thus making the collection of waste material more convenient. In addition, the length direction of the slide rail 7 is at an angle to the horizontal plane, that is, the slide rail 7 is in an inclined state, so that the waste material can slide down from the slide rail 7 more smoothly. Furthermore, the anti-collision plate 22 has downwardly curved guide parts fixed at both ends, so that when the cam 23 swings downward, it first contacts the guide part. The guide part is curved, so that the resistance encountered by the cam 23 during the contact process with the guide part is small, thus allowing the farthest point of the outer edge of the cam 23 to slide smoothly to the top surface of the anti-collision plate 22.

[0050] The working principle of this invention: The printing screen material is laid flat on multiple serrated plates 1. At this time, the bottom surface of the sliding block is in contact with the inner bottom wall of the limiting groove 12, and the tooth tips of the serrated plates 1 are facing upwards, supporting the printing screen material. Then, the laser head on the machine body 1 runs and laser cuts the printing screen material. During the cutting process, most of the cutting waste on the printing screen material falls into the slide 7 between two adjacent serrated plates 1. However, a small amount of smaller waste may be stuck in the serrations on the serrated plates 1, which is inconvenient to clean. At this time, it is only necessary to connect the external power supply to start the servo motor 5.

[0051] When the servo motor 5 starts, the output shaft of the servo motor 5 drives the rotating rod 9 to rotate. When the rotating rod 9 rotates, it drives the cam 23 to rotate, so that the farthest end of the cam 23 intermittently contacts the floating plate 24 and generates an upward elastic resisting force on the floating plate 24, causing the floating plate 24 to move upward, which in turn drives the floating frame 6 to move upward. When the floating frame 6 moves upward, the gear 14 and the rack column 13 move relative to each other, which in turn causes the gear 14 and the rack column 13 to mesh and drive the gear 14 to rotate. When the gear 14 rotates, it will drive the support shaft 17 to rotate. When the support shaft 17 rotates, it will drive the sawtooth plate 1 to rotate. At the same time, the support shaft 17 continues to rotate, which allows the floating frame 6 to move up and down back and forth, causing the sawtooth plate 1 to vibrate the waste stuck in the teeth, so that the waste can fall smoothly from the sawtooth plate 1.

[0052] When the rotating rod 9 rotates, the farthest point of the outer edge of the cam 23 will rotate downward and contact the upper surface of the anti-collision plate 22, thereby generating a downward squeezing force on the anti-collision plate 22. This causes the anti-collision plate 22 to drive the sliding rod 20 to move downward and keeps the tension spring 19 in a stretched state. When the farthest point of the outer edge of the cam 23 is no longer in contact with the anti-collision plate 22, the tension spring 19 will pull the floating ring 8 to move upward quickly, thereby causing the striking rod 18 to strike the protrusion 21. When the striking rod 18 strikes the protrusion 21, it will generate a vibration force on the slide rail 7. In this way, the waste material falling from the serrated plate 1 will fall into the slide rail 7 and slide down from the slide rail 7 under the action of vibration, thus making the collection of waste material more convenient.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting machine for printing screens with a cleaning structure, comprising a machine body (2) of a laser cutting machine, wherein a crossbeam (4) is provided on the machine body (2), and a plurality of serrated plates (1) are provided on the crossbeam (4), characterized in that, Also includes: A fixed frame (3) is fixed to the crossbeam (4), and a floating frame (6) is connected to the upper surface of the fixed frame (3). A swing assembly is provided on the floating frame (6), the serrated plate (1) is connected to the floating frame (6) through the swing assembly, and when the floating frame (6) moves vertically, the swing assembly drives the serrated plate (1) to rotate; A lifting assembly is provided on the fixed frame (3), the lifting assembly being used to drive the floating frame (6) to move vertically; The lifting assembly includes: A rotating rod (9) is horizontally mounted on the fixed frame (3). The rotating rod (9) rotates freely on the fixed frame (3), and the rotating rod (9) is driven to rotate by a servo motor (5) mounted on the outer wall of the fixed frame (3). A cam (23) is sleeved on the rotating rod (9), and a floating plate (24) is fixed on the floating frame (6). The floating plate (24) is located above the cam (23) and works in conjunction with the cam (23). The body (2) is connected to a slide rail (7), which is located below the fixed frame (3). The slide rail (7) is provided with a vibration component, which is used to generate a vibration force on the slide rail (7) when the cam (23) rotates. The vibration assembly includes: A protrusion (21) is fixed to the lower surface of the slide rail (7), and a sliding rod (20) is vertically inserted through the protrusion (21). The sliding rod (20) corresponds to the cam (23), and the sliding rod (20) slides freely on the slide rail (7). A floating ring (8) is sleeved on the lower end of the sliding rod (20), and a tension spring (19) is wound around the sliding rod (20). The two ends of the tension spring (19) are respectively fixed to the protrusion (21) and the floating ring (8). A striking rod (18) is fixed to the periphery of the floating ring (8), with one end of the striking rod (18) extending vertically upward away from the floating ring (8).

2. The laser cutting machine for printing screens with a cleaning structure according to claim 1, characterized in that, Multiple guide posts are vertically fixed on the fixed frame (3). The floating frame (6) has through holes for the guide posts to pass through freely. A stop ring (11) is sleeved on the upper end of the guide post. A spring (10) is also wrapped around the guide post. The two ends of the spring (10) elastically abut against the stop ring (11) and the floating frame (6) respectively in the direction of the elastic force.

3. The laser cutting machine for printing screens with a cleaning structure according to claim 1, characterized in that, The upper end of the sliding rod (20) is fixed with a crash plate (22), and the upper surface of the crash plate (22) is used in conjunction with the cam (23).

4. The laser cutting machine for printing screens with a cleaning structure according to claim 3, characterized in that, The anti-collision plate (22) has guide portions that bend downwards and extend at opposite ends.

5. The laser cutting machine for printing screens with a cleaning structure according to claim 1, characterized in that, The length of the slide (7) forms an angle with the horizontal plane.

6. The laser cutting machine for printing screens with a cleaning structure according to claim 1, characterized in that, The swing component includes: Fixed blocks (16) are fixed to both ends of the floating frame (6), and the fixed blocks (16) are provided with limiting grooves (12) in the form of through holes. The sliding block is engaged in the limiting groove (12). The lower end of the sawtooth plate (1) is fixedly connected to a support shaft (17). The two ends of the support shaft (17) are respectively inserted on the two sliding blocks and can rotate freely. One end of the support shaft (17) that passes through the sliding block is sleeved with a gear (14). A rack column (13) is vertically fixed on the fixing frame (3). The rack column (13) meshes with the gear (14).

7. The laser cutting machine for printing screens with a cleaning structure according to claim 6, characterized in that, A limiting block (15) is fixedly attached to the sliding block, and the surface of the limiting block (15) slides in contact with the side of the fixing block (16) facing the outside of the fixing frame (3).

Images