Metal mold milling device and milling method

Abstract

The invention belongs to the field of metal mold machining, and particularly relates to a metal mold milling device and a milling method. Comprising a base, a moving frame arranged in the middle of the top of the base, a moving seat arranged outside the moving frame in a sleeving mode, a mounting frame arranged at the bottom of the moving seat, a milling device fixed to the middle of the bottom of the mounting frame, hydraulic cylinders fixed to the two ends of the bottom of the moving frame and a cooling grooving mechanism assisting in groove machining. The bottom of the hydraulic cylinder is fixed to the surface of the base, and the cooling slotting mechanism comprises a mounting frame fixed to one side of the bottom of the mounting disc and two rotating shafts rotationally connected to the inner surface of the mounting frame. According to the cooling device, the cooling effect can be achieved when the output end of the milling device makes contact with the surface of the metal mold, meanwhile, the metal mold and the output end of the milling device can be cooled under the action of wind power, and therefore the production precision of the milling device on the metal mold can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of metal mold processing, and specifically relates to a metal mold milling device and a milling method. Background Art

[0002] Milling is a machining method that uses a milling cutter as a tool to machine the surface of an object, and is used to cut metal materials on a workpiece by rotating the tool to machine the required shape and size. When processing a metal mold, a plurality of grooves need to be opened on its surface, so a corresponding milling device is required.

[0003] In the actual use of the metal mold milling device in the prior art, the surfaces of the milling cutter and the metal mold will overheat. If they cannot be sufficiently cooled, it is easy to make the machined grooves not meet the production requirements. Moreover, a certain amount of debris will adhere to its surface during milling. If these debris are not processed in time, it will exacerbate the friction between the cutting edge and the workpiece, and easily cause the cutting edge to be quickly dulled or chipped.

[0004] Therefore, the present invention provides a metal mold milling device and a milling method. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A metal mold milling device and a milling method of the present invention include a base, a moving frame arranged at the middle position on the top of the base, a moving seat sleeved outside the moving frame, a mounting frame arranged at the bottom of the moving seat, a milling cutter fixed at the middle position of the bottom of the mounting frame, hydraulic cylinders fixed at both ends of the bottom of the moving frame, and a cooling and grooving mechanism for assisting in processing grooves. The bottom of the hydraulic cylinder is fixed to the surface of the base;

[0007] The cooling and grooving mechanism includes a mounting frame fixed at one side position of the bottom of the mounting plate, two rotating shafts rotatably connected to the inner surface of the mounting frame, a fan blade shaft rotatably connected to the inner surface of the mounting frame at the bottom of the rotating shaft, socket seats fixedly sleeved on the outer peripheral surfaces of both ends of one of the rotating shafts, nozzles fixed at the bottom of the socket seats, a ring pipe fixed on one side of the nozzle, and a driving and rotating assembly acting on the rotating shaft and the fan blade shaft.

[0008] Preferably, the driving and rotating assembly includes a third motor fixed to the top of the mounting disc, a movable shaft rotatably connected through the surface of the mounting disc on one side of the third motor, a rotating rod rotatably connected through the surface of the mounting disc at a position on one side of the movable shaft, a first circular gear fixedly sleeved on the output end of the third motor, the top outer peripheral surface of the movable shaft and the outer peripheral surface of the rotating rod, and a bevel gear fixedly sleeved on one side of the outer peripheral surface of the fan shaft and the bottom of the outer peripheral surface of the movable shaft. The two bevel gears are meshed with each other, and the two adjacent first circular gears on the outer periphery are meshed with each other.

[0009] Preferably, the driving and rotating assembly further includes a rotating disc fixed to the bottom of the rotating rod, a sleeve frame attached to the bottom of the rotating disc, a contact shaft inserted into the inner cavity of the sleeve frame, two connecting bars fixed to one side of the sleeve frame, a rack fixed to one side of the connecting bar, a supporting component acting on the rack, a second circular gear fixedly sleeved on both ends of the outer peripheral surface of the other rotating shaft, a pulley fixedly sleeved at the middle position of the two rotating shafts, and a connecting belt arranged at the middle position of the two pulleys. The second circular gear is meshed with the adjacent rack, and the top of the contact shaft is fixed to the surface of the rotating disc.

[0010] Preferably, the supporting component includes a storage groove opened at the bottom of the mounting frame at the top of the adjacent rack, an embedded rod fixed inside the storage groove, and a limit sleeve slidably sleeved on the outer peripheral surface of the embedded rod. The bottom of the limit sleeve is fixed to the surface of the adjacent rack.

[0011] Preferably, the temperature reduction grooving mechanism further includes an adjustment component acting on the mounting disc. The adjustment component includes a connecting block fixed at the middle position of the moving seat, an opening opened at the middle position of the connecting block, a connecting cylinder fixed at the middle position of the top of the mounting disc, a plug column slidably inserted into the middle position of the connecting cylinder, a third threaded rod threadedly connected to the top surface of the moving seat, and a limiting component acting on the mounting disc. The bottom of the third threaded rod extends into the inner cavity of the opening and is fixed to the surface of the plug column.

[0012] Preferably, the limiting component includes a T-shaped groove opened at the bottom of the moving seat near the mounting disc and a T-shaped block slidably inserted into the inner cavity of the T-shaped groove. The bottom of the T-shaped block is fixed to the surface of the top of the mounting disc.

[0013] Preferably, the cooling and grooving mechanism further includes a movable component for assisting in grooving. The movable component includes rod grooves opened at both sides of the top of the base, a second threaded rod rotatably connected to the inner cavity of the rod grooves, a second motor fixed to one side of the base, a threaded sleeve threadedly connected to the outer peripheral surface of the second threaded rod, and a magnetic suction plate fixed to the top of the threaded sleeve. One side of the second threaded rod passes through the base and is fixed to the output end of the second motor. The movable component further includes a first threaded rod rotatably connected to one side of the inner wall of the moving seat and a first motor fixed to one end of the moving frame. One end of the first threaded rod passes through the moving seat and is fixed to the output end of the first motor. Both sides of the connecting block extend into the inner cavity of the moving seat and are slidably connected to the inner cavity of the moving seat. One side of the connecting block is threadedly connected to the first threaded rod.

[0014] A metal mold milling method, which uses the above-mentioned metal mold milling device, includes the following steps:

[0015] S1: Place the metal mold between two magnetic suction plates, and rotate the third threaded rod to adjust the angle of the milling cutter in combination with the required grooving trajectory. After the adjustment is completed, start the hydraulic cylinder to make the output end of the milling cutter fit the surface of the metal mold.

[0016] S2: By using the adjustment component, the position of the milling cutter relative to the metal mold can be adjusted. After the adjustment is completed, control the hydraulic cylinder further according to the required groove depth and synchronously start the milling cutter so that it can open grooves with corresponding depths on the surface of the metal mold.

[0017] S3: Further, by using the adjustment component, the milling cutter can move in the front-back direction or the metal mold can move in the left-right direction, so that grooves facing left and right or grooves in the front-back direction can be opened on the surface of the metal mold.

[0018] S4: During the process of opening the grooves, start the third motor to make the nozzle swing reciprocally at a certain angle so that the water mist can contact the metal mold in a large range for cooling. At the same time, the airflow generated by the fan shaft can provide further power for the water mist to take away the debris attached to the surface of the output end of the milling cutter.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention connects a flexible hose capable of transporting water flow to the outer ring pipe, and turns on the third motor so that the ring pipe can drive the nozzle to swing reciprocally at a certain angle, spraying the water mist fully onto the output end of the milling cutter and the surface of the mold, thereby playing a role in fully cooling the output end of the milling cutter to avoid overheating of the output end of the milling cutter and the surface of the mold. And during this process, the fan blade shaft is synchronously rotated, so that under the action of the generated air flow, it can not only provide further power for the water mist, making the water mist carry the debris adhering to the surface of the output end of the milling cutter while cooling, to avoid the situation of rapid dulling or chipping of the output end of the milling cutter during long-term use.

[0021] 2. The present invention can adjust the angle of the output end of the milling cutter by rotating the third threaded rod, and turn on the first motor to make the milling cutter move in the front-back direction, or turn on the second motor to make the metal mold clamped by the two magnetic attraction plates move in the left-right direction, so that grooves can be opened on the surface of the metal mold facing in the left-right direction or in the front-back direction, thereby further improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the drawings.

[0023] Figure 1 is a three-dimensional structural schematic diagram in the front view direction of the present invention;

[0024] Figure 2 is in the present invention Figure 1 is an enlarged structural schematic diagram of part A therein;

[0025] Figure 3 is a three-dimensional structural schematic diagram of the moving seat of the present invention;

[0026] Figure 4 is a three-dimensional structural sectional schematic diagram of the moving seat of the present invention;

[0027] Figure 5 is in the present invention Figure 4 is an enlarged structural schematic diagram of part B therein;

[0028] Figure 6 is in the present invention Figure 4 is an enlarged structural schematic diagram of part C therein;

[0029] Figure 7 is a three-dimensional structural schematic diagram in the upward view direction of the local structure of the present invention;

[0030] Figure 8 is in the present invention Figure 7 is an enlarged structural schematic diagram of part D therein;

[0031] Figure 9 is a schematic diagram of the method flow of the present invention.

[0032] In the figure: 1, base; 2, motion frame; 3, motion seat; 4, milling machine; 5, first motor; 6, connecting block; 7, first threaded rod; 8, hydraulic cylinder; 9, rod groove; 10, second threaded rod; 11, threaded sleeve; 12, second motor; 13, magnetic plate; 14, mounting plate; 15, mounting frame; 16, opening; 17, connecting tube; 18, plug column; 19, third threaded rod; 20, T-slot; 21, third motor; 2 2. Movable shaft; 23. Rotating rod; 24. Rotating disk; 25. Frame; 26. First circular gear; 27. Rotating shaft; 28. Second circular gear; 29. Rack; 30. Connecting strip; 31. Limiting sleeve; 32. Pulley; 33. Connecting belt; 34. Annular tube; 35. Sprinkler; 36. Sleeve seat; 37. Fan shaft; 38. Conical gear; 39. Interference shaft; 40. Storage slot; 41. Embedded rod; 42. T-block. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1:

[0035] like Figures 1 to 8 As shown, a metal mold milling device according to an embodiment of the present invention comprises a base 1, a moving frame 2 arranged at the middle position of the top of the base 1, a moving seat 3 sleeved on the outside of the moving frame 2, a mounting frame 15 arranged at the bottom of the moving seat 3, a milling machine 4 fixed at the middle position of the bottom of the mounting frame 15, a hydraulic cylinder 8 fixed at both ends of the bottom of the moving frame 2, and a cooling grooving mechanism for assisting in processing grooves, wherein the bottom of the hydraulic cylinder 8 is fixed to the surface of the base 1;

[0036] The cooling slotting mechanism includes a mounting frame 15 fixed at a position on one side of the bottom of the mounting plate 14, two rotating shafts 27 rotatably connected to the inner surface of the mounting frame 15, a blade shaft 37 rotatably connected to the inner surface of the mounting frame 15 at the bottom of the rotating shaft 27, a sleeve 36 fixedly sleeved at both ends of the outer circumference of one of the rotating shafts 27, a nozzle 35 fixed at the bottom of the sleeve 36, a ring pipe 34 fixed to one side of the nozzle 35, and a rotation driving component acting on the rotating shaft 27 and the blade shaft 37;

[0037] When the milling cutter 4 starts to perform corresponding groove opening operations on the surface of the metal mold, first connect the annular pipe 34 through a rubber hose capable of delivering water flow, so that the water flow can spray out water mist from the nozzle 35 through the annular pipe 34. When the driving and rotating assembly functions, the rotating shaft 27 and the fan blade shaft 37 can rotate, so that the socket 36 can drive the nozzle 35 to swing reciprocally at a certain angle, spraying the water mist sprayed out from the fan blade shaft 37 over a large area onto the output end of the milling cutter 4 and the mold surface. The fan blade shaft 37 rotates to generate an air flow, so that under the action of the generated air flow, it can not only provide further power for the water mist, cool down the water mist while carrying the debris adhering to the surface of the output end of the milling cutter 4, so as to avoid the situation that the output end of the milling cutter 4 quickly becomes dull or the cutting edge breaks during long-term use.

[0038] As Figures 1 to 8 shown, the driving and rotating assembly includes a third motor 21 fixed to the top of the mounting plate 14, a movable shaft 22 rotatably connected through the mounting plate 14 and located on one side of the third motor 21, a rotating rod 23 rotatably connected through the mounting plate 14 and located at a position on one side of the movable shaft 22, a first circular gear 26 fixedly sleeved on the output end of the third motor 21, the top of the outer peripheral surface of the movable shaft 22 and the outer peripheral surface of the rotating rod 23, a bevel gear 38 fixedly sleeved on one side of the outer peripheral surface of the fan blade shaft 37 and the bottom of the outer peripheral surface of the movable shaft 22. The two bevel gears 38 are meshed with each other, and the two adjacent outer peripheral first circular gears 26 are meshed with each other;

[0039] By starting the third motor 21, one of the first circular gears 26 rotates. Thus, under the meshing action between the two adjacent first circular gears 26, the movable shaft 22 rotates, driving one of the bevel gears 38 to rotate. Then, under the meshing action between the two bevel gears 38, the fan blade shaft 37 can rotate. When the fan blade shaft 37 rotates, it can generate an air flow in the direction close to the metal mold.

[0040] As Figures 1 to 8 shown, the driving and rotating assembly further includes a rotating disk 24 fixed to the bottom of the rotating rod 23, a sleeve frame 25 fitted to the bottom of the rotating disk 24, a contact shaft 39 inserted into the inner cavity of the sleeve frame 25, two connecting strips 30 fixed to one side of the sleeve frame 25, a rack 29 fixed to one side of the connecting strips 30, a support member acting on the rack 29, second circular gears 28 fixedly sleeved on both ends of the outer peripheral surface of the other rotating shaft 27, a pulley 32 fixedly sleeved at the middle position of the two rotating shafts 27, and a connecting belt 33 arranged at the middle position of the two pulleys 32. The second circular gear 28 is meshed with the adjacent rack 29, and the top of the contact shaft 39 is fixed to the surface of the rotating disk 24;

[0041] When the movable shaft 22 rotates, the connecting belt 33 can be driven to rotate under the meshing action between two adjacent outer peripheral first circular gears 26, so that the rotating disc 24 rotates and drives the abutting shaft 39 to move in a circular motion. Then, under the action of the connecting strip 30 abutting against the sleeve frame 25 and the limiting action of the supporting component, the sleeve frame 25 can drive the connecting strip 30 and the rack 29 to reciprocate horizontally. As a result, the rack 29 can make one of the rotating shafts 27 rotate a certain angle alternately in two directions under the meshing action with the adjacent rotating shaft 27. Then, under the connection action of the pulley 32 and the connecting belt 33, the two rotating shafts 27 rotate a certain angle alternately in two directions. Finally, under the drive of the socket 36, the nozzle 35 swings reciprocally at a certain angle.

[0042] As Figures 1 to 8 shown, the supporting component includes a placing groove 40 opened at the bottom of the mounting bracket 15 and located at the top of the adjacent rack 29, an inlaid rod 41 fixed inside the placing groove 40, and a limiting sleeve 31 slidably sleeved on the outer peripheral surface of the inlaid rod 41. The bottom of the limiting sleeve 31 is fixed to the surface of the adjacent rack 29.

[0043] Since the limiting sleeve 31 can only slide along the outer peripheral surface of the adjacent inlaid rod 41 in the inner cavity of the adjacent placing groove 40, and the inlaid rod 41 can support the limiting sleeve 31 and the rack 29, the rack 29 can move more smoothly horizontally.

[0044] As Figures 1 to 8 shown, the cooling grooving mechanism further includes an adjusting component acting on the mounting disc 14. The adjusting component includes a connecting block 6 fixed at the middle position of the moving seat 3, an opening 16 opened at the middle position of the connecting block 6, a connecting cylinder 17 fixed at the middle position of the top of the mounting disc 14, a plug post 18 slidably inserted into the middle position of the connecting cylinder 17, a third threaded rod 19 threadedly connected to the top surface of the moving seat 3, and a limiting component acting on the mounting disc 14. The bottom of the third threaded rod 19 extends into the inner cavity of the opening 16 and is fixed to the surface of the plug post 18.

[0045] When it is necessary to open grooves on the surface of the metal mold facing left - right direction or front - back direction as required, by rotating the third threaded rod 19, the third threaded rod 19 drives the plug post 18 to move vertically and rotate under the action of the internal thread structure of the inner wall of the moving seat 3. Then, when the plug post 18 abuts against the connecting cylinder 17, the mounting disc 14 can rotate a certain angle smoothly horizontally under the limiting action of the limiting component, so that the output end of the milling cutter 4 can be adjusted to the corresponding required machining angle.

[0046] As Figures 1 to 8As shown, the limiting component includes a T-shaped groove 20 formed at the bottom of the moving seat 3 near the mounting plate 14 and a T-shaped block 42 slidably inserted into the inner cavity of the T-shaped groove 20. The bottom of the T-shaped block 42 is fixed to the surface of the top of the mounting plate 14;

[0047] Since the T-shaped block 42 can only slide in the inner cavity of the T-shaped groove 20, it can support the mounting plate 14 and limit the movement track of the mounting plate 14, so that the mounting plate 14 can rotate horizontally smoothly by a certain angle.

[0048] As Figures 1 to 8 shown, the cooling and grooving mechanism further includes a movable component for assisting in grooving. The movable component includes rod grooves 9 formed at both sides of the top of the base 1, a second threaded rod 10 rotatably connected to the inner cavity of the rod grooves 9, a second motor 12 fixed to one side of the base 1, a threaded sleeve 11 threadedly connected to the outer peripheral surface of the second threaded rod 10, and a magnetic attraction plate 13 fixed to the top of the threaded sleeve 11. One side of the second threaded rod 10 passes through the base 1 and is fixed to the output end of the second motor 12;

[0049] By placing the metal mold at the middle position between the two magnetic attraction plates 13, when the second motor 12 is started and the output end of the second motor 12 is controlled to drive the two second threaded rods 10 to rotate in opposite directions. Since the inner wall of the rod groove 9 can play a role in resisting and limiting the threaded sleeve 11, the distance between the two magnetic attraction plates 13 changes under the cooperation of the internal thread structure on the inner wall of the threaded sleeve 11 and the external thread structure on the outer peripheral surface of the second threaded rod 10, so that the metal mold can be clamped and fixed. And when it is necessary to adjust the position of the groove formed on the surface of the metal mold, when the output ends of the two second motors 12 are controlled to drive the two second threaded rods 10 to rotate in the same direction, the metal mold slides horizontally by a certain distance under the pushing action of the two magnetic attraction plates 13. And thus, when the hydraulic cylinder 8 is controlled to make the moving frame 2 move vertically so that the milling cutter 4 fits the surface of the metal mold, grooves facing left and right can be formed on the surface of the metal mold.

[0050] As Figures 1 to 8 shown, the movable component further includes a first threaded rod 7 rotatably connected to one side of the inner wall of the moving seat 3 and a first motor 5 fixed to one end of the moving frame 2. One end of the first threaded rod 7 passes through the moving seat 3 and is fixed to the output end of the first motor 5. Both sides of the connecting block 6 extend into the inner cavity of the moving seat 3 and are slidably connected to the inner cavity of the moving seat 3. One side of the connecting block 6 is threadedly connected to the first threaded rod 7;

[0051] By starting the first motor 5, the first threaded rod 7 can rotate. Since the inner wall of the moving seat 3 can abut and limit the connecting block 6, the moving seat 3 can move horizontally under the cooperation of the threaded structure between the inner wall of the connecting block 6 and the first threaded rod 7. Thus, the position of the milling cutter 4 in the front-back direction can be adjusted to adjust the position of the milling cutter 4 relative to the metal mold. And since the moving seat 3 can drive the milling cutter 4 to move in the front-back direction, when the control hydraulic cylinder 8 makes the moving frame 2 move vertically to make the milling cutter 4 fit the metal mold, grooves facing the front and back can be opened on the surface of the metal mold.

[0052] Embodiment 2:

[0053] As Figure 9 shown, a metal mold milling method, which uses the above-mentioned metal mold milling device, includes the following steps:

[0054] S1: Place the metal mold between the two magnetic attraction plates 13, and rotate the third threaded rod 19 in combination with the required grooving trajectory to adjust the angle of the milling cutter 4. After the adjustment is completed, start the hydraulic cylinder 8 to make the output end of the milling cutter fit the surface of the metal mold;

[0055] S2: By using the adjustment assembly, the position of the milling cutter 4 relative to the metal mold can be adjusted. After the adjustment is completed, according to the required depth of the groove to be opened, further control the hydraulic cylinder 8 and synchronously start the milling cutter 4 so that it can open a groove with a corresponding depth on the surface of the metal mold;

[0056] S3: Further, by using the adjustment assembly, the milling cutter 4 can move in the front-back direction or the metal mold can move in the left-right direction, so that grooves facing the left and right or grooves facing the front and back can be opened on the surface of the metal mold;

[0057] S4: During the process of opening the groove, start the third motor 21 to make the nozzle 35 swing reciprocally at a certain angle so that the water mist can contact the metal mold in a large range for cooling. At the same time, the airflow generated by the fan shaft 37 can provide further power for the water mist to take away the debris adhering to the surface of the output end of the milling cutter 4.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal mold milling device, comprising a base (1), a moving frame (2) arranged at the middle position on the top of the base (1), a moving seat (3) sleeved outside the moving frame (2), a mounting frame (15) arranged at the bottom of the moving seat (3), a milling cutter (4) fixed at the middle position of the bottom of the mounting frame (15), and hydraulic cylinders (8) fixed at both ends of the bottom of the moving frame (2), characterized in that: It further includes a cooling and grooving mechanism for assisting in machining the groove. The bottom of the hydraulic cylinder (8) is fixed to the surface of the base (1). The cooling and grooving mechanism includes a mounting frame (15) fixed at one side of the bottom of the mounting disc (14), two rotating shafts (27) rotatably connected to the inner surface of the mounting frame (15), a fan blade shaft (37) rotatably connected to the inner surface of the mounting frame (15) at the bottom position of the rotating shaft (27), socket seats (36) fixedly sleeved at both ends of the outer peripheral surface of one of the rotating shafts (27), spray nozzles (35) fixed to the bottom of the socket seats (36), a ring pipe (34) fixed to one side of the spray nozzles (35), and a rotation driving assembly acting on the rotating shafts (27) and the fan blade shaft (37).

2. The milling device for metal molds according to claim 1, wherein: The rotation driving assembly includes a third motor fixed to the top of the mounting disc (14), a movable shaft (22) rotatably penetrating and connected to the surface of the mounting disc (14) on one side of the third motor (21), a rotating rod (23) rotatably penetrating and connected to the surface of the mounting disc (14) at a position on one side of the movable shaft (22), a first circular gear (26) fixedly sleeved on the output end of the third motor (21), the top of the outer peripheral surface of the movable shaft (22) and the outer peripheral surface of the rotating rod (23), a bevel gear (38) fixedly sleeved on one side of the outer peripheral surface of the fan blade shaft (37) and the bottom of the outer peripheral surface of the movable shaft (22). The two bevel gears (38) are meshed with each other, and the two adjacent first circular gears (26) on the outer periphery are meshed with each other.

3. A metal mold milling device according to claim 2, characterized in that: The rotation driving assembly further includes a rotating disc fixed to the bottom of the rotating rod (23), a sleeve frame (25) attached to the bottom of the rotating disc (24), a contact shaft (39) inserted into the inner cavity of the sleeve frame (25), two connecting bars (30) fixed to one side of the sleeve frame (25), a rack (29) fixed to one side of the connecting bars (30), a support component acting on the rack (29), second circular gears (28) fixedly sleeved at both ends of the outer peripheral surface of the other rotating shaft (27), a pulley (32) fixedly sleeved at the middle position of the two rotating shafts (27), and a connecting belt (33) arranged at the middle position of the two pulleys (32). The second circular gear (28) is meshed with the adjacent rack (29), and the top of the contact shaft (39) is fixed to the surface of the rotating disc (24).

4. A metal mold milling device according to claim 3, characterized in that: The support component includes a storage groove (40) formed at the bottom of the mounting frame (15) at the top of the adjacent rack (29), an embedded rod (41) fixed inside the storage groove (40), and a limit sleeve (31) slidably sleeved on the outer peripheral surface of the embedded rod (41). The bottom of the limit sleeve (31) is fixed to the surface of the adjacent rack (29).

5. The milling device for metal molds according to claim 4, wherein: The cooling and grooving mechanism further includes an adjustment component acting on the mounting plate (14). The adjustment component includes a connection block (6) fixed at the middle position of the moving seat (3), an opening (16) formed at the middle position of the connection block (6), a connection cylinder (17) fixed at the middle position of the top of the mounting plate (14), a plug post (18) slidably inserted into the middle position of the connection cylinder (17), a third threaded rod (19) threadedly connected to the top surface of the moving seat (3), and a limiting component acting on the mounting plate (14). The bottom of the third threaded rod (19) extends into the inner cavity of the opening (16) and is fixed to the surface of the plug post (18).

6. The milling device for metal molds according to claim 5, characterized in that: The limiting component includes a T-shaped groove (20) formed at the bottom of the moving seat (3) near the mounting plate (14) and a T-shaped block (42) slidably inserted into the inner cavity of the T-shaped groove (20). The bottom of the T-shaped block (42) is fixed to the top surface of the mounting plate (14).

7. A metal mold milling device according to claim 6, characterized in that: The cooling and grooving mechanism further includes a movable component for assisting grooving. The movable component includes rod grooves (9) formed at both sides of the top of the base (1), a second threaded rod (10) rotatably connected to the inner cavity of the rod grooves (9), a second motor (12) fixed to one side of the base (1), a threaded sleeve (11) threadedly connected to the outer peripheral surface of the second threaded rod (10), and a magnetic attraction plate (13) fixed to the top of the threaded sleeve (11). One side of the second threaded rod (10) passes through the base (1) and is fixed to the output end of the second motor (12). The movable component further includes a first threaded rod (7) rotatably connected to one side of the inner wall of the moving seat (3) and a first motor (5) fixed to one end of the moving frame (2). One end of the first threaded rod (7) passes through the moving seat (3) and is fixed to the output end of the first motor (5). Both sides of the connection block (6) extend into the inner cavity of the moving seat (3) and are slidably connected to the inner cavity of the moving seat (3). One side of the connection block (6) is threadedly connected to the first threaded rod (7).

8. A metal mold milling method, which uses the metal mold milling device described in claim 7, and is characterized in that: It includes the following steps: S1: Place the metal mold between the two magnetic attraction plates (13), and rotate the third threaded rod (19) to adjust the angle of the milling cutter (4) in combination with the required grooving trajectory. After the adjustment is completed, start the hydraulic cylinder (8) to make the output end of the milling cutter fit the surface of the metal mold; S2: By using the adjustment component, the position of the milling cutter (4) relative to the metal mold can be adjusted. After the adjustment is completed, according to the required depth of the groove to be opened, further control the hydraulic cylinder (8) and synchronously start the milling cutter (4) so that it can open a groove with a corresponding depth on the surface of the metal mold; S3: Further, by using the adjustment component, the milling cutter (4) can move in the front-back direction or the metal mold can move in the left-right direction, so that grooves facing left-right or in the front-back direction can be opened on the surface of the metal mold; S4: During the process of opening the groove, the third motor (21) is turned on to make the nozzle (35) swing reciprocally at a certain angle, so that the water mist can come into wide-range contact with the metal mold for cooling. At the same time, the air flow generated by the fan shaft (37) can provide further power for the water mist and take away the debris adhering to the surface of the output end of the milling cutter (4).

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