A CNC lathe with adjustable cutting tool angle

Abstract

This application relates to a CNC lathe with an adjustable cutting tool angle, belonging to the technical field of CNC lathes. It includes a frame and a cutting head. A printing roller is placed on the frame and rotates relative to the frame. The output end of the cutting head faces the printing roller. A platform is provided on the frame, slidably connected to the frame and reciprocating along the length of the printing roller. A support frame is provided between the cutting head and the platform, with one end fixed to the platform and the other end rotatably connected to the side wall of the cutting head. The rotation shaft between the cutting head and the support frame is horizontally arranged along the sliding direction of the platform. A swing assembly is provided between the support frame and the cutting head, including a first motor, a gear, and a gear ring. The gear ring is fixed to the outer wall of the cutting head, and the center of the gear is the rotatable connection point between the support frame and the outer wall of the cutting head. The first motor is fixed to the support frame, and the gear ring is fitted onto the rotation shaft of the first motor. The gear meshes with the gear ring. This application has the effect of adapting to printing rollers of different diameters and ensuring engraving quality.

Description

Technical Field

[0001] This application relates to the technical field of CNC lathes, and in particular to a CNC lathe with adjustable tool angle. Background Technology

[0002] A printing roller is a high-precision tool widely used in the printing industry. Its main manufacturing process involves copper plating on the roller surface, followed by engraving according to the printing plate requirements. The printing roller is directly mounted on the machine for transferring printing plates.

[0003] When the printing roller is being processed on a lathe, all requirements, such as printing size and printing style, are input into the CNC computer and engraving drawings are generated in the CNC computer. Then, the printing roller is transported to the lathe, the lathe is started, the lathe clamps and drives the printing roller to rotate, and the cutting tool performs laser engraving on the outer wall of the printing roller according to the information transmitted by the CNC computer.

[0004] Different printing plates mean different widths, which directly affect the diameter of the printing roller. When printing rollers of different diameters are placed on a lathe for processing, the cutting tool tip is passively changed from being directly facing the outer wall of the printing roller to having an angle with the outer wall of the printing roller. When engraving again, the presence of the angle will affect the depth and clarity of the engraving. This problem urgently needs to be solved. Summary of the Invention

[0005] In order to adapt to printing rollers of different diameters and ensure engraving quality, this application provides a CNC lathe with adjustable cutting tool angle.

[0006] The CNC lathe with adjustable cutting tool angle provided in this application adopts the following technical solution:

[0007] A CNC lathe with adjustable cutting tool angle includes a frame, a CNC computer and a cutting head mounted on the frame, a printing roller placed on the frame and rotating relative to the frame, and the output end of the cutting head facing the printing roller. A pad is provided on the frame, the pad is slidably connected to the frame and slides back and forth along the length of the printing roller, a support frame is provided between the cutting head and the pad, one end of the support frame is fixed to the pad, and the other end is rotatably connected to the side wall of the cutting head, the rotation shaft between the cutting head and the support frame is horizontally arranged along the sliding direction of the pad, and a swing assembly is provided between the support frame and the cutting head, the swing assembly including a first motor, a gear and a gear ring, the gear ring being fixed on the outer wall of the cutting head, the center of the gear being the rotatable connection point between the support frame and the outer wall of the cutting head, the first motor being fixed on the support frame, the gear ring being sleeved on the rotation shaft of the first motor, and the gear meshing with the gear ring.

[0008] By adopting the above technical solution, the printing roller rotates on the frame, and the cutter head performs laser engraving on the outer wall of the printing roller. When the diameter of the printing roller to be processed changes, the first motor starts and drives the gear to rotate. Through the meshing of the gear and the gear ring, the cutter head is driven to rotate, so that the cutter head is directly facing the engraving point on the outer wall of the printing roller, thus achieving the effect of adapting to printing rollers of different diameters and ensuring the engraving quality.

[0009] Optionally, an auxiliary rod is provided between the cutter head and the pad, and an auxiliary plate is hinged to the top of the auxiliary rod. The hinge axis of the auxiliary plate is horizontally set along the sliding direction of the pad. A torsion spring is fixed between the auxiliary rod and the auxiliary plate. The torsion spring is located on the side wall of the auxiliary rod facing or away from the printing roller.

[0010] By adopting the above technical solution, the auxiliary rod and auxiliary plate provide support for the cutter head. The presence of the torsion spring generates resistance after the cutter head rotates, which, together with the interlocking of the gear ring and gear, further improves the stability of the cutter head's position after rotation.

[0011] Optionally, an air blowing assembly is provided between the support frame and the gear. The air blowing assembly includes an air pump and an air pipe. The support frame is hollow inside, and an air outlet is opened near the cutter head. The air pump is fixed on the pad, and one end of the air pipe is connected to the air pump, while the other end is connected to the inside of the support frame.

[0012] By adopting the above technical solution, metal debris will be generated after the outer wall of the printing roller is engraved. The metal debris will fall between the gear and the gear ring, affecting the smooth rotation between them. The air pump is started to blow air into the gear and gear ring through the support frame and air outlet, thereby providing a clean working environment for the meshing transmission between the gear and the gear ring.

[0013] Optionally, a connecting pipe and a steering cylinder are provided between the support frame and the gear. The gear has a vent hole, and the outlet end of the vent hole is located on the circumferential side wall of the gear. The steering cylinder is sleeved on the rotating shaft of the first motor. The rotating shaft of the first motor rotates relative to the steering cylinder. The opening end of the steering cylinder is connected to the inlet end of the vent hole of the gear. One end of the connecting pipe is fixed to the support frame and the fixed part covers the vent hole. The other end is fixed to the steering cylinder and communicates with the inside of the steering cylinder.

[0014] By adopting the above technical solution, if the gear is located below the support frame, it will protect the gear and reduce the possibility of debris being hooked and rolled up at the meshing point of the gear and gear ring. However, this will affect the cleaning effect of the air outlet on the meshing point of the gear and gear ring. When the air pump is started, the gas passes through the support frame, air outlet, connecting pipe and steering cylinder and is then sprayed out through the vent hole, directly blowing on the meshing point of the gear and gear ring, ensuring the cleaning effect of metal debris at the meshing point of the gear and gear ring.

[0015] Optionally, the frame is provided with a second motor, a screw, and a slide plate. The screw passes through the slide plate and is threadedly connected to the slide plate. The length of the screw is set along the length of the printing roller. The screw is rotatably mounted on the frame. The end of the screw is fixedly connected to the rotating shaft of the second motor. The second motor is fixed on the frame. The slide plate slides relative to the frame along the length of the screw. The pad is slidably mounted on the slide plate and slides horizontally along the direction perpendicular to the length of the screw.

[0016] By adopting the above technical solution, the second motor is started, which drives the screw to rotate. Since the screw and the slide plate are threadedly connected, the slide plate cannot rotate. Ultimately, the slide plate slides along the length of the screw, thereby adjusting the position of the cutter head. When adjusting the cutter head tilt angle can no longer meet the engraving requirements, the pad is moved relative to the slide plate, thereby readjusting the cutter head tilt angle. This allows for the engraving of rollers with different diameters, indirectly expanding the range of roller diameters that can be accommodated.

[0017] Optionally, a first roller and a second roller are slidably arranged on the frame. The first roller and the second roller slide horizontally in a direction that approaches or moves away from each other. The line connecting the first roller and the second roller is arranged along the direction perpendicular to the length of the printing roller. There are two of each first roller and two rollers. Adjacent first rollers are spaced apart along the length of the printing roller. The printing roller is horizontally mounted on the first roller and the second roller.

[0018] By adopting the above technical solution, the first roller and the second roller support the printing roller. At the same time, since the first roller and the second roller roll against the outer wall of the printing roller, the friction between them is reduced, and the loss of rotational energy of the printing roller is reduced. The positions of the first roller and the second roller can be adjusted to accommodate printing rollers of different diameters.

[0019] Optionally, a support plate and a hydraulic cylinder are fixed on the frame. The support plate has an elongated hole that is horizontally opened along the length of the vertical roller. A first roller and a second roller are located in the elongated hole. The first roller and the second roller pass through the elongated hole and slide horizontally along the length of the elongated hole. The first roller and the second roller cannot disengage from the elongated hole in the vertical direction. The hydraulic cylinder is located below the support plate. The driving end of the hydraulic cylinder drives the first roller and the second roller to move in a direction that approaches or moves away from each other.

[0020] By adopting the above technical solution, when it is necessary to adjust the position between the first and second rollers, the hydraulic cylinder is activated. The piston rod of the hydraulic cylinder moves vertically, thereby pushing the first and second rollers to move closer or further apart. The elongated hole provides a stable sliding path for the sliding of the first and second rollers. When it is necessary to adjust the vertical height of the first and second rollers, the hydraulic cylinder is activated, driving the first and second rollers to their furthest point apart. Then, the top of the hydraulic cylinder continues to rise, lifting the support plate, thereby increasing the vertical height of the first and second rollers.

[0021] Optionally, a bottom cylinder is fixed on both the first and second rollers. The bottom cylinder has an upward-facing opening and an oil box that slides inside. A sponge is fixed on the top of the oil box. The oil box slides vertically. An insertion hole is provided on the side wall of the bottom cylinder. An insertion rod is horizontally fixed on the inner wall of the end of the elongated hole. When the bottom cylinder slides to the end of the elongated hole, the end of the insertion rod passes through the insertion hole and lifts the oil box. A spring is provided inside the bottom cylinder to move the oil box downward and reset it.

[0022] By adopting the above technical solution, when the hydraulic cylinder drives the first roller and the second roller to move to the end of the elongated hole, the end of the insert rod passes through the insert hole and lifts the oil box. The sponge absorbs oil from the oil box and is also lifted up to contact the first roller or the second roller, thus brushing oil onto the outer wall of the first roller or the second roller, further reducing the friction between the first roller and the second roller and the outer wall of the printing roller.

[0023] Optionally, the bottom of the oil box is rotatably equipped with a ball bearing, and the insertion rod is provided with a groove; when the ball bearing abuts against the top wall of the insertion rod, the sponge abuts against the outer wall of the first roller or the second roller; when the ball bearing is located in the groove, the sponge is stored in the bottom cylinder.

[0024] By adopting the above technical solution, when the ball contacts the end of the insert rod, it can roll to the top of the insert rod, which makes it easy for the end of the insert rod to pass through the insert hole and lift the oil box. When the ball is in the groove, the sponge is stored in the bottom cylinder, so that the sponge brushes oil on the outer wall of the first roller or the second roller and then falls back into the bottom cylinder, reducing the friction of the sponge on the outer wall of the first roller or the second roller.

[0025] Optionally, along the length of the printing roller, shielding curtains are provided on both sides of the slide plate. The shielding curtains themselves have a folding and storage function and are located above the screw.

[0026] By adopting the above technical solution, metal shavings will be generated when the outer wall of the laser engraving roller is used. The presence of the shielding curtain does not affect the sliding of the slide plate, and at the same time, it also protects the screw. The staff can directly sweep the metal shavings on the shielding curtain, which facilitates the subsequent cleaning work.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The swing assembly can adjust the angle between the cutter head and the horizontal plane, thereby ensuring the engraving quality of the outer wall of the printing roller;

[0029] 2. The air blowing assembly cleans metal debris between the gear and the gear ring, thereby ensuring the stability of the gear-gear meshing;

[0030] 3. The oil box and sponge make full use of the presence of the hydraulic cylinder and the insert rod. While the hydraulic cylinder pushes the first roller and the second roller to move, the sponge intermittently contacts the outer wall of the first roller and the outer wall of the second roller, thereby applying lubricating oil to the first roller and the second roller. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the platform and some of the structures on the platform;

[0033] Figure 3 It is a vertical structural sectional view along the length of the frame;

[0034] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0035] Figure 5 It is a vertical structural sectional view along the width of the frame;

[0036] Figure 6 yes Figure 5 A magnified view of part B in the diagram.

[0037] In the diagram, 1. Frame; 11. CNC computer; 12. Cutting head; 13. Printing roller; 14. Support platform; 15. Second motor; 16. Screw; 17. Slide plate; 18. First roller; 19. Second roller; 2. Support frame; 21. Air vent; 22. Connecting pipe; 23. Steering cylinder; 3. Swing assembly; 31. First motor; 32. Gear; 321. Vent hole; 33. Gear ring; 4. Auxiliary... 41. Auxiliary rod; 42. Torsion spring; 5. Air blowing assembly; 51. Air pump; 52. Air pipe; 6. Support plate; 61. Hydraulic cylinder; 62. Long slot; 63. Insert rod; 64. Drive rod; 7. Bottom cylinder; 71. Oil box; 72. Sponge; 73. Insert hole; 74. Spring; 75. Protrusion; 76. Slide groove; 77. Ball bearing; 78. Groove; 79. Receiving slot; 8. Screen curtain. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6This application will be described in further detail.

[0039] This application discloses a CNC lathe with adjustable cutting tool angle.

[0040] refer to Figure 1 A CNC lathe with adjustable cutting tool angle includes a frame 1, on which a CNC computer 11 and a cutting head 12 are mounted. A printing roller 13 is hoisted onto the frame 1 and rotates on the frame 1. The CNC computer 11 controls the cutting head 12 to perform laser engraving on the outer wall of the printing roller 13.

[0041] refer to Figure 1 and Figure 2 The printing roller 13 has a length, and its length direction is the same as that of the frame 1. The frame 1 is equipped with a slide plate 17, a screw 16, and a second motor 15. The second motor 15 is fixed to the frame 1, and its rotating shaft is fixedly connected to one end of the screw 16. The screw 16 is positioned along the length of the printing roller 13 and is rotatably connected to the frame 1. The screw 16 passes through the slide plate 17 and is threadedly connected to it. The outer wall of the slide plate 17 abuts against the frame 1, thereby limiting the rotation of the slide plate 17 by the frame 1, allowing the slide plate 17 to slide only along the length of the screw 16. A pad 14 is slidably mounted on the slide plate 17. The pad 14 slides towards or away from the printing roller 13. Bolts are mounted on the pad 14, and bolt holes are correspondingly provided on the slide plate 17. When the pad 14 has finished sliding, the bolts pass through the pad 14 and are threadedly connected to the corresponding bolt holes.

[0042] refer to Figure 2 The cutter head 12 is located on the base 14. A support frame 2 and an auxiliary rod 4 are provided between the cutter head 12 and the base 14. The bottom end of the support frame 2 is fixedly connected to the top of the base 14. In this embodiment, the support frame 2 is an inverted L-shape. The other end of the support frame 2 is rotatably connected to the outer wall of the cutter head 12. The rotation axis between the support frame 2 and the cutter head 12 is set horizontally, allowing the cutter head 12 to swing in the vertical direction. The auxiliary rod 4 is vertically fixed on the base 14 and located directly below the cutter head 12. An auxiliary plate 41 is hinged to the top of the auxiliary rod 4. The auxiliary plate 41 is close to the outer wall of the cutter head 12. The hinge axis of the auxiliary plate 41 is set horizontally along the length of the screw 16. A torsion spring 42 is fixed between the auxiliary plate 41 and the auxiliary rod 4. The torsion spring 42 is located on the side wall of the auxiliary rod 4 facing or away from the printing roller 13. In this embodiment, torsion springs 42 are provided on both the side wall of the auxiliary rod 4 facing and away from the printing roller 13.

[0043] refer to Figure 2A swing assembly 3 is provided between the support frame 2 and the cutter head 12. The swing assembly 3 includes a first motor 31, a gear 32 and a gear ring 33. The gear ring 33 is fixed on the outer wall of the cutter head 12. The rotatable connection between the support frame 2 and the outer wall of the cutter head 12 is located at the center of the gear ring 33. The first motor 31 is fixed on the support frame 2. The end of the rotating shaft of the first motor 31 is fixed to the gear 32. The gear 32 is located between the inner wall of the gear ring 33 and the outer wall of the support frame 2. The gear 32 meshes with the inner wall of the gear ring 33. The support frame 2 is equipped with a connecting pipe 22 and a steering cylinder 23. The support frame 2 has an air vent 21 near the gear 32. One end of the connecting pipe 22 is fixed to the outer wall of the support frame 2 and completely covers the air vent 21. The other end of the connecting pipe 22 is fixedly connected to the steering cylinder 23. The connecting pipe 22 connects to the inside of the steering cylinder 23. The steering cylinder 23 is wrapped around the outside of the rotating shaft of the first motor 31. The steering cylinder 23 is rotatably connected to the rotating shaft of the first motor 31. The steering cylinder 23 is coaxial with the rotating shaft of the first motor 31. There is a distance between the inner wall of the steering cylinder 23 and the outer wall of the rotating shaft of the first motor 31. The open end of the steering cylinder 23 abuts against the outer wall of the gear 32. The gear 32 rotates relative to the steering cylinder 23.

[0044] refer to Figure 2 The gear 32 is provided with a vent hole 321. The air inlet end of the vent hole 321 is located on the side wall of the gear 32 in the area covered by the steering cylinder 23, and the air outlet end of the vent hole 321 is located on the circumferential outer wall of the gear 32. Multiple vent holes 321 are provided, and the air outlet ends of adjacent vent holes 321 are spaced apart along the circumferential outer wall of the gear 32.

[0045] refer to Figure 2 An air blowing assembly 5 is provided on the platform 14. The air blowing assembly 5 includes an air pump 51 and an air pipe 52. One end of the air pipe 52 is connected to the air outlet of the air pump 51, and the other end is connected to the interior of the support frame 2, which is hollow. The air pump 51 pressurizes and delivers gas. The gas passes through the support frame 2, the air outlet 21, the connecting pipe 22, and the steering cylinder 23, and is then ejected through the vent hole 321, thereby blowing off the metal debris between the gear 32 and the gear ring 33.

[0046] refer to Figure 1 and Figure 2 A screen curtain 8 is provided between the skateboard 17 and the frame 1. The screen curtain 8 has the function of being folded and stored to reduce the space occupied. The screen curtain 8 is arranged on both sides of the skateboard 17 along the length of the screw 16. One end of the screen curtain 8 is fixedly connected to the skateboard 17, and the other end is fixedly connected to the frame 1. The screen curtain 8 completely covers the screw 16.

[0047] refer to Figure 1 , Figure 3 and Figure 4A first roller 18 and a second roller 19 are slidably arranged on the frame 1. The first roller 18 and the second roller 19 slide horizontally in a direction that is close to or far from each other. The line connecting the first roller 18 and the second roller 19 is horizontally arranged and perpendicular to the length direction of the printing roller 13. One first roller 18 and one second roller 19 form a group. In this embodiment, two groups are arranged at intervals along the length direction of the printing roller 13. The printing roller 13 is horizontally mounted on the first roller 18 and the second roller 19.

[0048] refer to Figure 1 , Figure 5 and Figure 6 The frame 1 is provided with a support plate 6, and the support plate 6 has elongated holes 62. There are two elongated holes 62 corresponding to the number of first rollers 18. The length direction of the elongated holes 62 is perpendicular to the length direction of the printing roller 13. An insert rod 63 is fixed in the elongated hole 62. The insert rod 63 is horizontally set and the end away from the inner wall of the elongated hole 62 is in a cantilevered state. There are two insert rods 63 corresponding to the number of elongated holes 62. The length direction of the insert rod 63 is along the length direction of the elongated hole 62 and is located at the inner wall of the end of the elongated hole 62.

[0049] refer to Figure 4 and Figure 6 Both the first roller 18 and the second roller 19 are provided with a bottom cylinder 7. Taking the connection between the first roller 18 and the bottom cylinder 7 as an example, the first roller 18 is rotatably connected to the bottom cylinder 7. The first roller 18 rotates relative to the bottom cylinder 7. The bottom cylinder 7 has an opening facing upward and an oil box 71 is slidably provided inside. A sponge 72 is fixed on the top of the oil box 71. The oil box 71 slides in the vertical direction. The diameter of the oil box 71 gradually decreases from top to bottom. A ball bearing 77 is rotatably provided at the bottom of the oil box 71. The ball bearing 77 rotates relative to the oil box 71 and abuts against the inner wall of the bottom of the bottom cylinder 7. An insertion hole 73 is opened on the side wall of the bottom cylinder 7. When the bottom cylinder 7 slides to the end of the elongated hole 62, the end of the insertion rod 63 passes through the insertion hole 73 and lifts up the oil box 71.

[0050] refer to Figure 4 and Figure 6 A groove 76 is provided inside the elongated hole 62, and the groove 76 is horizontally opened along the length direction of the elongated hole 62. A protrusion 75 is fixed on the outer wall of the bottom cylinder 7, and the protrusion 75 is located in the groove 76, so that the bottom cylinder 7 cannot be disengaged from the elongated hole 62 in the vertical direction. A receiving groove 79 is provided on the inner wall of the bottom cylinder 7, and the receiving groove 79 is opened in the vertical direction. A protrusion is fixed on the outer wall of the oil box 71, and the protrusion is located in the receiving groove 79. A spring 74 is placed in the receiving groove 79. One end of the spring 74 is fixed to the protrusion, and the other end is fixed to the inner wall of the receiving groove 79. The spring 74 is vertically set and located above the protrusion. When the oil box 71 moves upward, the spring 74 is in a compressed state.

[0051] refer to Figure 6The insert rod 63 has a groove 78; when the ball 77 abuts against the top wall of the insert rod 63, the sponge 72 abuts against the outer wall of the first roller 18 or the second roller 19; when the ball 77 is located in the groove 78, the sponge 72 is stored in the bottom cylinder 7. The sponge 72 continuously absorbs lubricating oil from the oil box 71.

[0052] refer to Figure 5 and Figure 6 The frame 1 is equipped with a hydraulic cylinder 61 and a drive rod 64. The hydraulic cylinder 61 is vertically fixed to the frame 1 and located directly below the elongated hole 62. One end of the drive rod 64 is hinged to the outer wall of the piston rod of the hydraulic cylinder 61, and the other end is hinged to the bottom end face of the base cylinder 7. Each hydraulic cylinder 61 is equipped with two drive rods 64. When the piston rod of the hydraulic cylinder 61 pushes upward, the hydraulic cylinder 61 pushes the first roller 18 and the second roller 19 to move away from each other through the drive rod 64 until they reach the very end of the elongated hole 62. At this time, the insert rod 63 is inserted into the base cylinder 7. If the piston rod of the hydraulic cylinder 61 continues to push upward, the piston end of the hydraulic cylinder 61 will lift the entire bearing plate 6 upward. When the piston rod of the hydraulic cylinder 61 retracts downward, the hydraulic cylinder 61 pulls the first roller 18 and the second roller 19 to move closer to each other through the drive rod 64. This achieves the effect of the hydraulic cylinder 61 driving the first roller 18 and the second roller 19 to move in directions that are closer to or further apart from each other.

[0053] The implementation principle of a CNC lathe with adjustable cutting tool angle according to an embodiment of this application is as follows: the printing roller 13 rotates on the frame 1, and the cutting head 12 performs laser engraving on the outer wall of the printing roller 13. When the diameter of the printing roller 13 to be processed changes, the first motor 31 starts and drives the gear 32 to rotate. Through the meshing of the gear 32 and the gear ring 33, the cutting head 12 is driven to rotate, so that the cutting head 12 is directly facing the engraving point on the outer wall of the printing roller 13, so as to be able to adapt to printing rollers 13 of different diameters and ensure the engraving quality.

[0054] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A CNC lathe with adjustable cutting tool angle, comprising a frame (1), a CNC computer (11) and a cutting head (12) mounted on the frame (1), a printing roller (13) placed on the frame (1), the printing roller (13) rotating relative to the frame (1), and the output end of the cutting head (12) facing the printing roller (13), characterized in that: A platform (14) is provided on the frame (1). The platform (14) is slidably connected to the frame (1) and slides back and forth along the length of the roller (13). A support frame (2) is provided between the cutter head (12) and the platform (14). One end of the support frame (2) is fixed to the platform (14), and the other end is rotatably connected to the side wall of the cutter head (12). The rotation shaft between the cutter head (12) and the support frame (2) is horizontally arranged along the sliding direction of the platform (14). A swing assembly (3) is provided between the support frame (2) and the cutter head (12). The swing assembly (3) includes a first motor (31), a gear (32), and a gear ring (33). The gear ring (33) is fixed on the outer wall of the cutter head (12). The center of the gear (32) is the point where the support frame (2) and the cutter head (12) meet. At the rotating connection of the outer wall, the first motor (31) is fixed on the support frame (2), and the gear (32) is ringed on the rotating shaft of the first motor (31). The gear (32) meshes with the gear ring (33). The frame (1) is slidably provided with a first roller (18) and a second roller (19). The first roller (18) and the second roller (19) slide horizontally in the direction of approaching or moving away from each other. The line connecting the first roller (18) and the second roller (19) is set along the length direction perpendicular to the printing roller (13). There are two of each of the first roller (18) and the second roller (19). Adjacent first rollers (18) are spaced apart along the length direction of the printing roller (13). The printing roller (13) is horizontally mounted on the first roller (18) and the second roller (19). The frame (1) is fixed with a support plate (6) and a hydraulic cylinder (61). The support plate (6) has an elongated hole (62) that is horizontally opened along the length of the vertical roller (13). A first roller (18) and a second roller (19) are located in the elongated hole (62). The first roller (18) and the second roller (19) pass through the elongated hole (62) and slide horizontally along the length of the elongated hole (62). The first roller (18) and the second roller (19) cannot disengage from the elongated hole (62) in the vertical direction. The hydraulic cylinder (61) is located below the support plate (6). The driving end of the hydraulic cylinder (61) drives the first roller (18) and the second roller (19) to move in a direction that is closer to or further away from each other. A bottom cylinder (7) is fixed on both a roller (18) and a second roller (19). The bottom cylinder (7) has an upward opening and an oil box (71) is slidably installed inside. A sponge (72) is fixed on the top of the oil box (71). The oil box (71) slides vertically. An insertion hole (73) is provided on the side wall of the bottom cylinder (7). An insertion rod (63) is horizontally fixed on the inner wall of the end of the elongated hole (62). When the bottom cylinder (7) slides to the end of the elongated hole (62), the end of the insertion rod (63) passes through the insertion hole (73) and lifts up the oil box (71). A spring (74) is provided inside the bottom cylinder (7) to move the oil box (71) downward and reset it. A ball bearing (77) is rotatably provided at the bottom of the oil box (71). A groove (78) is provided on the insertion rod (63).When the ball (77) abuts against the top wall of the insert rod (63), the sponge (72) abuts against the outer wall of the first roller (18) or the second roller (19); when the ball (77) is located in the groove (78), the sponge (72) is stored in the bottom cylinder (7).

2. The CNC lathe with adjustable tool angle according to claim 1, characterized in that: An auxiliary rod (4) is provided between the cutter head (12) and the pad (14). An auxiliary plate (41) is hinged to the top of the auxiliary rod (4). The hinge axis of the auxiliary plate (41) is horizontally arranged along the sliding direction of the pad (14). A torsion spring (42) is fixed between the auxiliary rod (4) and the auxiliary plate (41). The torsion spring (42) is located on the side wall of the auxiliary rod (4) facing or away from the printing roller (13).

3. A CNC lathe with adjustable tool angle according to claim 1, characterized in that: An air blowing assembly (5) is provided between the support frame (2) and the gear (32). The air blowing assembly (5) includes an air pump (51) and an air pipe (52). The support frame (2) is hollow inside. An air outlet (21) is provided near the cutter head (12) of the support frame (2). The air pump (51) is fixed on the pad (14). One end of the air pipe (52) is connected to the air pump (51), and the other end is connected to the inside of the support frame (2).

4. A CNC lathe with adjustable tool angle according to claim 3, characterized in that: A connecting pipe (22) and a steering cylinder (23) are provided between the support frame (2) and the gear (32). The gear (32) has a vent hole (321). The air outlet of the vent hole (321) is located on the circumferential side wall of the gear (32). The steering cylinder (23) is sleeved on the rotating shaft of the first motor (31). The rotating shaft of the first motor (31) rotates relative to the steering cylinder (23). The open end of the steering cylinder (23) is connected to the air inlet end of the vent hole (321) of the gear (32). One end of the connecting pipe (22) is fixed to the support frame (2) and the fixed part covers the vent hole (21). The other end is fixed to the steering cylinder (23) and is connected to the inside of the steering cylinder (23).

5. A CNC lathe with adjustable cutting tool angle according to claim 1, characterized in that: The frame (1) is provided with a second motor (15), a screw (16) and a slide plate (17). The screw (16) passes through the slide plate (17) and is threadedly connected to the slide plate (17). The length direction of the screw (16) is set along the length direction of the printing roller (13). The screw (16) is rotatably set on the frame (1). The end of the screw (16) is fixedly connected to the rotating shaft of the second motor (15). The second motor (15) is fixed on the frame (1). The slide plate (17) slides relative to the frame (1) along the length direction of the screw (16). The pad (14) is slidably set on the slide plate (17). The pad (14) slides horizontally along the length direction perpendicular to the screw (16).

6. A CNC lathe with adjustable tool angle according to claim 5, characterized in that: Along the length of the printing roller (13), the slide plate (17) is provided with a shielding curtain (8) on both sides. The shielding curtain (8) has a folding and storage function and is located above the screw (16).

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