Cutting forming machine tool for metal lithographic printing plate and using method of cutting forming machine tool

Abstract

The invention belongs to the technical field of metal cutting, particularly relates to a cutting forming machine tool for a metal lithographic printing plate and a use method of the cutting forming machine tool, and aims to solve the problems that potential safety hazards exist when a plate is trimmed and polished and the edges of the plate are difficult to ensure to be flush in the prior art. A U-shaped sliding rail is fixedly installed at the top of the machine base, a moving plate is connected to the U-shaped sliding rail in a sliding mode, a handle is fixedly installed on one side of the moving plate, and a feeding plate is fixedly installed on one side of the machine base. According to the metal plate cutting device, the cutter is arranged on the base, so that good safety is achieved when a metal plate is machined, meanwhile, the cutter can keep horizontally and linearly moving when moving, and after the metal plate is cut, it can be guaranteed that the corners of the metal plate are kept flush.

Description

Technical Field

[0001] The invention relates to the technical field of metal cutting, and in particular to a cutting and forming machine tool for a metal planographic printing plate and a use method thereof. Background Art

[0002] The lithographic printing plate uses the principle of oil-water repulsion to print. During the printing process, water is first supplied to the printing plate so that the blank part absorbs the water and becomes moist; then a layer of ink is applied to the entire plate surface. Due to the oil-water repulsion, the ink is repelled by the water and can only adhere to the oily image (i.e. the image and text); finally, the paper is pressed onto the surface of the printing plate, and the inked image is transferred to the paper.

[0003] At present, in the production process of metal lithographic printing plates, the plate material made into a flat blank needs to be trimmed to remove the burrs on the edges of the plate material. However, during the processing, when the high-speed rotating angle grinder grinds the burrs, the burrs will be scattered everywhere, which may easily injure the staff. And when the angle grinder is used to grind the edge of the plate material, it is difficult to ensure the flatness of the edge of the plate material. Therefore, we propose a cutting and forming machine tool for metal lithographic printing plates and a method of using the same to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that there are certain safety hazards when trimming and grinding the plate and it is difficult to ensure that the edges of the plate remain flush, and to propose a cutting and forming machine tool for a metal lithographic printing plate and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cutting and forming machine tool for a metal lithographic printing plate comprises a machine base, a U-shaped slide rail is fixedly installed on the top of the machine base, a movable plate is slidably connected to the U-shaped slide rail, a handle is fixedly installed on one side of the movable plate, a loading plate is fixedly installed on one side of the machine base, a mounting frame is fixedly installed on the top of the machine base, a first stopper is fixedly installed in the U-shaped slide rail, and a second stopper is fixedly installed on the bottom of the movable plate. The cutting and forming machine tool also includes:

[0007] A supporting mechanism is installed on the top of the moving plate, a metal sheet is placed on the supporting mechanism, and the supporting mechanism is used to rotatably support the metal sheet;

[0008] A clamping mechanism, which passes through the mounting frame and is connected to the mounting frame, and cooperates with the supporting mechanism to position and clamp the metal sheet;

[0009] The cutting mechanism is installed on the inner wall of one side of the mounting frame. The cutting mechanism is used to clean the burrs on the edges and corners of the metal sheet. The top of the cutting mechanism passes through the top inner wall of the mounting frame and extends to the top of the mounting frame. The cutting mechanism is connected to the top of the clamping mechanism.

[0010] In one possible design, the support mechanism includes a support tube fixedly mounted on the top of the movable plate, the top of the support tube is rotatably connected to a support plate, the metal sheet is placed on the support plate, and a stepper motor located in the support tube is fixedly mounted on the top of the movable plate, and the output shaft of the stepper motor is fixedly connected to the bottom of the support plate.

[0011] In a possible design, the clamping mechanism includes a moving rod that passes through the top inner wall of the mounting frame and is slidably connected to the top inner wall of the mounting frame, the moving rod is connected to the cutting mechanism, and the bottom end of the moving rod is rotatably connected to a chuck, which is used to clamp and position the metal sheet. Two connecting plates are fixedly sleeved on the moving rod, and the two connecting plates are respectively located inside and above the mounting frame. The top of the mounting frame is rotatably connected to a transmission nut, and the transmission nut is internally threaded with a transmission screw, and the top and bottom ends of the transmission screw extend to the top of the transmission nut and the inside of the mounting frame respectively, and the top and bottom ends of the transmission screw are respectively connected to the sides of the two connecting plates close to each other, and a power assembly is installed on the top inner wall of the mounting frame, and the top of the power assembly extends to the top of the mounting frame and is connected to the transmission nut.

[0012] In one possible design, the power assembly includes a drive motor fixedly mounted on the top inner wall of the mounting frame, the output shaft of the drive motor extends to the top of the mounting frame and is fixedly mounted with a gear, a gear ring is fixedly sleeved on the transmission nut, and the gear is meshed with the gear ring.

[0013] In one possible design, the cutting mechanism includes a support plate slidably connected to an inner wall of one side of a mounting frame, a sliding hole is opened on the support plate, a sliding plate is slidably connected through the sliding hole, a cutter head is installed on one side of the sliding plate, a servo motor is fixedly installed on the top of the support plate, a travel screw is fixedly installed on the output shaft of the servo motor, one end of the travel screw is rotatably connected to the top of the support plate, a threaded plate is threadedly sleeved on the travel screw, the bottom of the threaded plate is fixedly connected to the top of the sliding plate, a connecting frame is fixedly installed on the top of the support plate, the top of the connecting frame passes through the top inner wall of the mounting frame and extends to the top of the mounting frame, and the top of the moving rod is fixedly connected to the top inner wall of the connecting frame.

[0014] In a possible design, a tool holder is fixedly installed on the bottom of one side of the skateboard, a positioning plate is fixedly installed on one side of the tool holder, a positioning frame is mounted on the positioning plate, the tool head is fixedly connected to the positioning frame, and the positioning frame is fixedly connected to the positioning plate by bolts.

[0015] In a possible design, a support plate is fixedly installed on the bottom inner wall of one side of the mounting frame, a rectangular groove is opened on the top of the support plate, a collection box is arranged on the top of the support plate, the collection box is located below the cutter head, a clamping plate is fixedly installed on the bottom of the collection box, and the bottom of the clamping plate extends into the rectangular groove and is clamped with the inner wall of the rectangular groove.

[0016] In a possible design, a rectangular ring is fixedly installed on the other side of the movable plate, and two clamps are symmetrically slidably connected in the rectangular ring. One side of the clamp extends to the outside of the rectangular ring, and an arc-shaped clamping groove is opened on the clamping plate. An arc angle is set on one side of the clamping plate. A positioning shaft is fixedly installed on the top of the U-shaped slide rail, and the two clamps are clamped with the positioning shaft through the two arc-shaped clamping grooves respectively. Mounting plates are fixedly installed on both sides of the rectangular ring, and a limit rod is slidably connected through the mounting plate. One end of the limit rod is fixedly connected to the corresponding clamp plate, and a compression spring is sleeved on the limit rod. The two ends of the compression spring are respectively fixedly connected to one side of the clamp plate and one side of the mounting plate.

[0017] A method for using a metal lithographic printing plate cutting and forming machine tool comprises the following steps:

[0018] S1. Metal sheet positioning:

[0019] After placing the metal sheet on the support plate, push the moving plate to make the clamping plate contact the positioning shaft. The clamping plate moves to compress the compression spring until the arc-shaped clamping groove corresponds to the positioning shaft. The compression spring pushes the clamping plate to move in the opposite direction to clamp the positioning shaft and position the moving plate.

[0020] S2, the transmission nut drives the moving rod to move downward:

[0021] The drive motor is started to drive the gear to rotate, and the transmission nut is rotated through the gear ring meshing transmission, and the drive screw and the two connected connecting plates drive the moving rod to move downward, and the chuck is positioned to clamp the metal sheet.

[0022] S3, the cutter head cuts the edge of the metal sheet:

[0023] The moving rod moves downward through the connecting frame to drive the support plate and the cutter head to move downward to contact the edge of the metal sheet. The servo motor is started to drive the travel screw to rotate. The thread transmission thread plate moves the slide plate and the cutter head to cut the burrs of the metal sheet into the collection box.

[0024] S4, stepper motor adjusts the position of metal sheet:

[0025] After cutting one side edge, start the stepper motor to drive the support plate and the metal sheet to rotate, and adjust the position of the four sides of the metal sheet so that the cutting mechanism can cut the corners.

[0026] S5. Clean up the waste and take out the metal sheet:

[0027] After cutting is completed, take out the collection box to clean the waste chips, start the drive motor to rotate the gear in the opposite direction, drive the chuck to move upward to release the clamping, pull the handle to move the movable plate to the loading plate, and take out the cut metal sheet.

[0028] Beneficial effects: In the present invention, the metal planographic printing plate cutting and forming machine tool can, through the support mechanism, after placing the metal sheet on the support plate, start the stepping motor to drive the support plate to rotate, and then drive the metal sheet to rotate, so that the position of the four sides of the metal sheet can be adjusted, so that the corners of the metal sheet can be cut by the cutting mechanism;

[0029] In the present invention, the cutting and forming machine tool for metal planographic printing plates can drive the transmission nut to rotate by starting the power assembly through the clamping mechanism. At this time, under the thread transmission action with the transmission screw, the transmission screw can be driven to move downward, thereby driving the moving rod to move downward, and the chuck can be used to position and clamp the metal sheet, and the chuck and the moving rod are rotatably connected, so when the metal sheet is rotated, the chuck will not cause obstruction to the metal sheet;

[0030] In the present invention, the metal planographic printing plate cutting and forming machine tool can drive the support plate to move downward through the connecting frame when the moving rod moves downward, so that after the chuck positions and clamps the metal sheet, the cutter head can contact the edge of the metal sheet, and then the servo motor can be started to drive the travel screw to rotate. At this time, under the action of the threaded transmission with the threaded plate, the slide plate can be driven to move, that is, the cutter head can be driven to move, and the burrs on the metal sheet can be scraped off;

[0031] When making a planographic printing plate, the present invention can automatically cut off the burrs existing around the cut metal sheet, thereby having good safety when processing the metal sheet. At the same time, the cutter can maintain horizontal and straight movement when moving, so after cutting the metal sheet, it can be ensured that the edges and corners of the metal sheet remain flush. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional schematic diagram of the first-view structure of a metal lithographic plate cutting and forming machine tool proposed by the present invention;

[0033] Figure 2 A three-dimensional schematic diagram of the structure from a second perspective of a metal planographic printing plate cutting and forming machine tool proposed by the present invention;

[0034] Figure 3 A three-dimensional schematic diagram of the connection structure of a support tube, a stepping motor and a support plate of a metal planographic printing plate cutting and forming machine tool proposed by the present invention;

[0035] Figure 4 A three-dimensional schematic diagram of the connection structure of a drive motor, gear, gear ring, transmission nut, transmission screw and moving rod of a metal planographic plate cutting and forming machine tool proposed by the present invention;

[0036] Figure 5 A three-dimensional schematic diagram of a servo motor, a travel screw, a threaded plate, a slide plate and a cutter head connection structure of a metal planographic plate cutting and forming machine tool proposed by the present invention;

[0037] Figure 6 A three-dimensional schematic diagram of a connection structure of a slide plate, a tool holder, a positioning frame, a positioning plate and a tool head of a metal planographic printing plate cutting and forming machine tool proposed by the present invention;

[0038] Figure 7 A three-dimensional schematic diagram of a collection box and a support plate separation structure of a metal planographic printing plate cutting and forming machine tool proposed by the present invention;

[0039] Figure 8 A bottom-up three-dimensional schematic diagram of a U-shaped slide rail and a supporting plate connection structure of a metal planographic plate cutting and forming machine tool proposed by the present invention.

[0040] In the figure: 1. base; 2. U-shaped slide rail; 3. moving plate; 4. handle; 5. feeding plate; 6. first baffle; 7. second baffle; 8. support tube; 9. support plate; 10. stepping motor; 11. metal sheet; 12. mounting frame; 13. moving rod; 14. connecting plate; 15. transmission screw; 16. transmission nut; 17. chuck; 18. gear ring; 19. driving motor; 20. gear; 21. connecting frame; 22. support plate; 23. servo motor; 24. travel screw; 25. threaded plate; 26. slide plate; 27. tool holder; 28. positioning frame; 29. ​​positioning plate; 30. tool head; 31. support plate; 32. collection box; 33. card plate; 34. rectangular ring; 35. clamping plate; 36. positioning shaft; 37. mounting plate; 38. limit rod; 39. compression spring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1

[0043] Reference Figure 1-8A machine tool comprises a machine base 1, a U-shaped slide rail 2 is fixedly installed on the top of the machine base 1, a moving plate 3 is slidably connected to the U-shaped slide rail 2, and the moving plate 3 can slide smoothly along the U-shaped slide rail 2. A handle 4 is fixedly installed on one side of the moving plate 3 to facilitate manual operation of the moving plate 3. A loading plate 5 is fixedly installed on one side of the machine base 1 for placing a metal sheet 11 to be processed.

[0044] A mounting frame 12 is also fixedly installed on the top of the machine base 1 to provide a mounting base for the subsequent clamping mechanism and cutting mechanism. A first stop bar 6 is fixedly installed in the U-shaped slide rail 2 to limit the sliding range of the moving plate 3 on the U-shaped slide rail 2 to prevent it from sliding excessively. A second stop bar 7 is fixedly installed at the bottom of the moving plate 3 to cooperate with the first stop bar 6 to further stabilize the position of the moving plate 3.

[0045] We installed a supporting mechanism on the top of the moving plate 3. The supporting mechanism includes a supporting tube 8 fixedly installed on the top of the moving plate 3, and the top of the supporting tube 8 is rotatably connected to a supporting disk 9. A metal sheet 11 can be placed on the supporting disk 9, and the rotation of the supporting disk 9 can drive the metal sheet 11 to rotate, thereby adjusting the position of the metal sheet 11 to facilitate subsequent cutting operations. A stepper motor 10 located in the supporting tube 8 is also fixedly installed on the top of the moving plate 3, and the output shaft of the stepper motor 10 is fixedly connected to the bottom of the supporting disk 9. When the stepper motor 10 is started, it can drive the supporting disk 9 to rotate smoothly.

[0046] The clamping mechanism passes through the mounting frame 12 and is connected to the mounting frame 12. The clamping mechanism includes a moving rod 13 that passes through the top inner wall of the mounting frame 12 and is slidably connected to the top inner wall of the mounting frame 12. The bottom end of the moving rod 13 is rotatably connected to a chuck 17, and the chuck 17 is used to clamp and position the metal sheet 11. Two connecting plates 14 are fixedly sleeved on the moving rod 13, and the two connecting plates 14 are respectively located inside and above the mounting frame 12. A transmission nut 16 is rotatably connected to the top of the mounting frame 12, and a transmission screw 15 is connected to the internal thread of the transmission nut 16. The top and bottom ends of the transmission screw 15 extend to the top of the transmission nut 16 and the inside of the mounting frame 12, respectively, and are connected to the sides of the two connecting plates 14 that are close to each other.

[0047] In order to drive the transmission screw 15 to move longitudinally, we installed a power assembly on the top inner wall of the mounting frame 12. The power assembly includes a driving motor 19 fixedly mounted on the top inner wall of the mounting frame 12, and the output shaft of the driving motor 19 extends to the top of the mounting frame 12 and is fixedly mounted with a gear 20. A gear ring 18 is fixedly sleeved on the transmission nut 16, and the gear 20 is meshed with the gear ring 18. When the driving motor 19 is started, the gear 20 can be driven to rotate, and then the transmission nut 16 is driven to rotate through the meshing transmission of the gear ring 18. Since the transmission nut 16 and the transmission screw 15 are threadedly connected, the rotation of the transmission nut 16 can drive the transmission screw 15 to move longitudinally, thereby driving the moving rod 13 to move longitudinally, so that the chuck 17 can position and clamp the metal sheet 11. In addition, since the chuck 17 and the moving rod 13 are rotationally connected, when the metal sheet 11 is rotated, the chuck 17 will not cause obstruction to the metal sheet 11.

[0048] The cutting mechanism is mounted on the inner wall of one side of the mounting frame 12, and is used to clean the burrs existing at the corners of the metal sheet 11. The cutting mechanism includes a support plate 22 slidably connected to the inner wall of one side of the mounting frame 12, and a sliding hole is provided on the support plate 22, and a slide plate 26 is slidably connected through the slide hole. A cutter head 30 is installed on one side of the slide plate 26, and is used to perform cutting operations on the metal sheet 11. A servo motor 23 is fixedly mounted on the top of the support plate 22, and a travel screw 24 is fixedly mounted on the output shaft of the servo motor 23, and one end of the travel screw 24 is rotatably connected to the top of the support plate 22. A threaded plate 25 is threadedly sleeved on the travel screw 24, and the bottom of the threaded plate 25 is fixedly connected to the top of the slide plate 26.

[0049] A connecting frame 21 is also fixedly mounted on the top of the support plate 22, and the top of the connecting frame 21 passes through the top inner wall of the mounting frame 12 and extends to the top of the mounting frame 12. The top of the moving rod 13 is fixedly connected to the top inner wall of the connecting frame 21. When the moving rod 13 moves downward, the support plate 22 can be driven downward by the connecting frame 21, so that the cutter head 30 contacts the edge of the metal sheet 11. Afterwards, the servo motor 23 can be started to drive the travel screw 24 to rotate, and then the slide plate 26 is driven to move under the threaded transmission action with the threaded plate 25, so that the cutter head 30 performs a cutting operation along the edge of the metal sheet 11 to scrape off the burrs on the metal sheet 11.

[0050] In order to ensure that the cutter head 30 can stably perform cutting operations, a cutter holder 27 is fixedly installed at the bottom of one side of the slide plate 26, and a positioning plate 29 is fixedly installed on one side of the cutter holder 27. A positioning frame 28 is mounted on the positioning plate 29, and the cutter head 30 is fixedly connected to the positioning frame 28. The positioning frame 28 is fixedly connected to the positioning plate 29 by bolts, thereby realizing the positioning installation of the cutter head 30, so that it can stably move laterally with the slide plate 26.

[0051] This application can be used in the field of metal cutting technology, and can also be used in other fields applicable to this application. Example 2

[0052] refer to Figure 7 , improved on the basis of Example 1: a cutting and forming machine tool for metal lithographic printing plates, which is applied to the field of metal cutting technology. In order to facilitate the collection of cut burrs, we fixedly installed a support plate 31 on the bottom inner wall of one side of the mounting frame 12, and a rectangular groove is provided on the top of the support plate 31. A collection box 32 is provided on the top of the support plate 31, and the collection box 32 is located below the cutter head 30. A clamping plate 33 is fixedly installed at the bottom of the collection box 32, and the bottom of the clamping plate 33 extends into the rectangular groove and is clamped with the inner wall of the rectangular groove. In this way, when cutting the burrs on the metal sheet 11, the scraped burrs will fall into the collection box 32, so that the burrs can be collected and processed conveniently.

[0053] In addition, in order to facilitate the positioning of the movable plate 3, a rectangular ring 34 is fixedly installed on the other side of the movable plate 3, and two clamps 35 are symmetrically slidably connected in the rectangular ring 34. One side of the clamp 35 extends to the outside of the rectangular ring 34 and is provided with an arc-shaped clamping groove. One side of the clamp 35 is provided with an arc angle to facilitate contact and clamping with the positioning shaft 36. A positioning shaft 36 is fixedly installed on the top of the U-shaped slide rail 2, and the two clamps 35 are clamped with the positioning shaft 36 through two arc-shaped clamping grooves. Mounting plates 37 are fixedly installed on both sides of the rectangular ring 34, and a limiting rod 38 is slidably connected through the mounting plate 37, and one end of the limiting rod 38 is fixedly connected to the corresponding clamp 35. A compression spring 39 is sleeved on the limiting rod 38, and the two ends of the compression spring 39 are respectively fixedly connected to one side of the clamp 35 and one side of the mounting plate 37.

[0054] When the moving plate 3 is pushed to move into the mounting frame 12, the arc angle on the clamping plate 35 will contact the positioning shaft 36. Afterwards, the clamping plate 35 will move along the rectangular ring 34 under the action of the arc surface of the positioning shaft 36, and compress the compression spring 39. When the arc-shaped clamping groove corresponds to the position of the positioning shaft 36, the compression spring 39 in a stressed state will push the clamping plate 35 to move in the opposite direction, clamp the positioning shaft 36, and thus realize the positioning of the moving plate 3. In this way, the stability of the moving plate 3 during the cutting process can be ensured, and the cutting accuracy and efficiency can be improved.

[0055] The present invention provides a method for using a metal lithographic printing plate cutting and forming machine tool, comprising the following steps:

[0056] S1. When the metal sheet 11 is placed on the support plate 9 and the movable plate 3 is then pushed to move into the mounting frame 12, the arc angle on the clamping plate 35 is in contact with the positioning shaft 36. Then, the clamping plate 35 can move along the rectangular ring 34 under the action of the arc surface of the positioning shaft 36. When the clamping plate 35 moves, the compression spring 39 can be compressed to put the compression spring 39 in a stressed state until the arc-shaped clamping groove corresponds to the position of the positioning shaft 36. At this time, the compression spring 39 in a stressed state can push the clamping plate 35 to move in the opposite direction and clamp the positioning shaft 36, so as to position the movable plate 3.

[0057] S2, start the driving motor 19 to drive the gear 20 to rotate, and at this time, under the meshing transmission action with the gear ring 18, it can drive the driving nut 16 to rotate, drive the driving screw 15 to move downward, and when the driving screw 15 moves downward, the two connecting plates 14 drive the moving rod 13 to move downward, and use the chuck 17 to position and clamp the metal sheet 11, and the chuck 17 and the moving rod 13 are rotatably connected, so when the metal sheet 11 is rotated, the chuck 17 will not cause obstruction to the metal sheet 11;

[0058] S3, when the moving rod 13 moves downward, the supporting plate 22 can be driven to move downward through the connecting frame 21, so that after the chuck 17 positions and clamps the metal sheet 11, the cutter head 30 can contact the edge of the metal sheet 11, and then the servo motor 23 is started to drive the travel screw 24 to rotate, and at this time, under the action of the threaded transmission with the threaded plate 25, the slide plate 26 can be driven to move, so that the cutter head 30 can move, and the burrs on the metal sheet 11 can be scraped off into the collection box 32;

[0059] S4. After the edge of one side of the metal sheet 11 is cut, the stepper motor 10 is started to drive the support plate 9 to rotate, which can drive the metal sheet 11 to rotate, so that the positions of the four sides of the metal sheet 11 can be adjusted, so that the corners of the metal sheet 11 can be cut by the cutting mechanism;

[0060] S5. After the cutting is completed, the collecting box 32 is taken out from the supporting plate 31 so that the waste chips in the collecting box 32 can be cleaned. At the same time, the driving motor 19 is started to drive the gear 20 to rotate in the opposite direction, so as to drive the chuck 17 to move upward, release the positioning clamping of the metal sheet 11, and then pull the handle 4 to move the movable plate 3 to the loading plate 5 to take out the metal sheet 11 after cutting.

[0061] However, as is well known to those skilled in the art, the working principles and wiring methods of the stepper motor 10, drive motor 19 and servo motor 23 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal lithographic plate cutting and forming machine tool, comprising a machine base (1), a U-shaped slide rail (2) is fixedly installed on the top of the machine base (1), a movable plate (3) is slidably connected to the U-shaped slide rail (2), a handle (4) is fixedly installed on one side of the movable plate (3), a loading plate (5) is fixedly installed on one side of the machine base (1), a mounting frame (12) is fixedly installed on the top of the machine base (1), a first stopper (6) is fixedly installed in the U-shaped slide rail (2), and a second stopper (7) is fixedly installed at the bottom of the movable plate (3), characterized in that: The cutting and forming machine tool also includes: A supporting mechanism, the supporting mechanism is installed on the top of the movable plate (3), a metal sheet (11) is placed on the supporting mechanism, and the supporting mechanism is used to rotatably support the metal sheet (11); A clamping mechanism, the clamping mechanism passes through the mounting frame (12) and is connected to the mounting frame (12), the clamping mechanism cooperates with the supporting mechanism and is used to position and clamp the metal sheet (11); A cutting mechanism is installed on an inner wall of one side of the mounting frame (12). The cutting mechanism is used to clean burrs existing at the corners of the metal sheet (11). The top of the cutting mechanism passes through the top inner wall of the mounting frame (12) and extends to the top of the mounting frame (12). The cutting mechanism is connected to the top of the clamping mechanism.

2. A metal lithographic printing plate cutting and forming machine tool according to claim 1, characterized in that: The support mechanism comprises a support tube (8) fixedly mounted on the top of the moving plate (3); the top of the support tube (8) is rotatably connected to a support disk (9); a metal sheet (11) is placed on the support disk (9); a stepper motor (10) located in the support tube (8) is fixedly mounted on the top of the moving plate (3); and an output shaft of the stepper motor (10) is fixedly connected to the bottom of the support disk (9).

3. A metal lithographic printing plate cutting and forming machine tool according to claim 1, characterized in that: The clamping mechanism comprises a moving rod (13) penetrating the inner wall of the top of the mounting frame (12) and being slidably connected to the inner wall of the top of the mounting frame (12); the moving rod (13) is connected to the cutting mechanism; the bottom end of the moving rod (13) is rotatably connected to a chuck (17); the chuck (17) is used to clamp and position the metal sheet (11); two connecting plates (14) are fixedly sleeved on the moving rod (13); the two connecting plates (14) are respectively located inside and above the mounting frame (12); the top of the mounting frame (12) A transmission nut (16) is rotatably connected, and a transmission screw (15) is internally threadedly connected to the transmission nut (16). The top and bottom ends of the transmission screw (15) extend above the transmission nut (16) and into the mounting frame (12), respectively. The top and bottom ends of the transmission screw (15) are respectively connected to the sides of the two connecting plates (14) close to each other. A power assembly is installed on the top inner wall of the mounting frame (12), and the top of the power assembly extends to the top of the mounting frame (12) and is connected to the transmission nut (16).

4. A metal planographic printing plate cutting and forming machine tool according to claim 3, characterized in that: The power assembly comprises a driving motor (19) fixedly mounted on the inner wall of the top of the mounting frame (12); the output shaft of the driving motor (19) extends to the top of the mounting frame (12) and is fixedly mounted with a gear (20); a gear ring (18) is fixedly sleeved on the transmission nut (16); and the gear (20) is meshed with the gear ring (18).

5. A metal planographic printing plate cutting and forming machine tool according to claim 4, characterized in that: The cutting mechanism comprises a support plate (22) slidably connected to an inner wall of one side of a mounting frame (12), a sliding hole is opened on the support plate (22), a slide plate (26) is slidably connected through the sliding hole, a cutter head (30) is installed on one side of the slide plate (26), a servo motor (23) is fixedly installed on the top of the support plate (22), a travel screw (24) is fixedly installed on the output shaft of the servo motor (23), one end of the travel screw (24) is rotatably connected to the top of the support plate (22), a threaded plate (25) is threadedly sleeved on the travel screw (24), the bottom of the threaded plate (25) is fixedly connected to the top of the slide plate (26), a connecting frame (21) is fixedly installed on the top of the support plate (22), the top of the connecting frame (21) passes through the top inner wall of the mounting frame (12) and extends to the top of the mounting frame (12), and the top of the moving rod (13) is fixedly connected to the top inner wall of the connecting frame (21).

6. A metal planographic printing plate cutting and forming machine tool according to claim 5, characterized in that: A tool holder (27) is fixedly mounted on the bottom of one side of the slide plate (26), a positioning plate (29) is fixedly mounted on one side of the tool holder (27), a positioning frame (28) is mounted on the positioning plate (29), a tool head (30) is fixedly connected to the positioning frame (28), and the positioning frame (28) is fixedly connected to the positioning plate (29) by bolts.

7. A metal planographic printing plate cutting and forming machine tool according to claim 1, characterized in that: A support plate (31) is fixedly mounted on the inner wall of the bottom of one side of the mounting frame (12); a rectangular groove is formed on the top of the support plate (31); a collection box (32) is arranged on the top of the support plate (31); the collection box (32) is located below the cutter head (30); a clamping plate (33) is fixedly mounted on the bottom of the collection box (32); the bottom of the clamping plate (33) extends into the rectangular groove and is clamped with the inner wall of the rectangular groove.

8. The metal planographic printing plate cutting and forming machine tool according to claim 1, characterized in that: A rectangular ring (34) is fixedly installed on the other side of the movable plate (3), and two clamping plates (35) are symmetrically slidably connected in the rectangular ring (34). One side of the clamping plate (35) extends to the outside of the rectangular ring (34), and an arc-shaped clamping groove is opened on the clamping plate (35). One side of the clamping plate (35) is provided with an arc angle. A positioning shaft (36) is fixedly installed on the top of the U-shaped slide rail (2). The two clamping plates (35) are clamped with the positioning shaft (36) through the two arc-shaped clamping grooves respectively. A mounting plate (37) is fixedly installed on both sides of the rectangular ring (34). A limiting rod (38) is slidably connected through the mounting plate (37). One end of the limiting rod (38) is fixedly connected to the corresponding clamping plate (35). A compression spring (39) is sleeved on the limiting rod (38). The two ends of the compression spring (39) are respectively fixedly connected to one side of the clamping plate (35) and one side of the mounting plate (37).

9. A method for using a metal planographic printing plate cutting and forming machine tool according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Positioning of the metal sheet (11): After placing the metal sheet (11) on the support plate (9), the movable plate (3) is pushed to make the clamping plate (35) contact the positioning shaft (36). The clamping plate (35) moves to compress the compression spring (39) until the arc-shaped clamping groove corresponds to the positioning shaft (36). The compression spring (39) pushes the clamping plate (35) to move in the opposite direction to clamp the positioning shaft (36), thereby positioning the movable plate (3); S2, the transmission nut (16) drives the moving rod (13) to move downward: the driving motor (19) is started to drive the gear (20) to rotate, and the transmission nut (16) is rotated through the meshing transmission of the gear ring (18), and the driving screw (15) and the two connected connecting plates (14) drive the moving rod (13) to move downward, and the chuck (17) is positioned to clamp the metal sheet (11); S3, the cutter head (30) cuts the edge of the metal sheet (11): the moving rod (13) moves downward through the connecting frame (21) to drive the support plate (22) and the cutter head (30) to move downward to contact the edge of the metal sheet (11), the servo motor (23) is started to drive the travel screw (24) to rotate, the threaded transmission thread plate (25) causes the slide plate (26) and the cutter head (30) to move, and the burrs of the metal sheet (11) are cut to the collection box (32); S4, the stepper motor (10) adjusts the position of the metal sheet (11): after cutting one side edge, the stepper motor (10) is started to drive the support plate (9) and the metal sheet (11) to rotate, and the positions of the four sides of the metal sheet (11) are adjusted so that the cutting mechanism can cut the corners; S5, cleaning up waste chips and taking out the metal sheet (11): After cutting is completed, take out the collection box (32) to clean up the waste chips, start the drive motor (19) to rotate the gear (20) in the opposite direction, drive the chuck (17) to move upward to release the clamping, pull the handle (4) to move the movable plate (3) to the loading plate (5), and take out the cut metal sheet (11).

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