Follow-up supporting type milling device for mold curved surface profiling machining

Abstract

The invention provides a follow-up supporting type milling device for mold curved surface profiling machining, and relates to the technical field of mold milling. The follow-up supporting type milling device for mold curved surface profiling machining comprises a workbench, a milling bin and a milling base, the milling bin is arranged at the top of the workbench, the milling base is arranged in the milling bin, bearing frames are fixedly installed on the two sides of the milling base correspondingly, follow-up supporting mechanisms are arranged on the two bearing frames correspondingly, and the follow-up supporting mechanisms are arranged on the two bearing frames correspondingly. The follow-up supporting mechanism comprises a rigid-flexible switching supporting assembly and an air inlet assembly, the rigid-flexible switching supporting assembly is used for conducting rigid-flexible supporting on the mold, and the air inlet assembly is used for providing stable and controllable air pressure for flexible supporting. The follow-up supporting type milling device for mold curved surface profiling machining has the advantages that automatic switching between rigid supporting and flexible supporting can be achieved, point contact and surface contact can be conducted on a mold, the mold is evenly stressed, and the flexible supporting air bag is rapidly replaced.

Description

Technical Field

[0002] This invention relates to the field of mold milling technology, and in particular to a follow-up support milling device for mold surface contouring. Background Technology

[0004] The follow-up support milling device for mold surface contouring is a special equipment that provides adaptive support in real time during mold surface contouring milling by coordinating the movement of the follow-up support head and the milling cutter to suppress workpiece deformation and vibration, and ensure surface accuracy and surface quality. It is suitable for machining weakly rigid curved surfaces such as thin-walled molds and complex cavities.

[0005] Traditional follow-up support milling devices typically use fixed brackets or ejector pins to press against the mold surface for positioning when machining the curved surface of a mold. Although this can provide strong support rigidity and meet the needs of high cutting force machining scenarios, the position and height adjustment flexibility of the support structure is poor. It is difficult to adapt to the undulations of the complex curved surface of the mold, and it is easy to make point contact or local contact with the curved surface, resulting in uneven force on the mold, which in turn causes problems such as mold deformation, scratches or indentations on the milled surface.

[0006] Therefore, it is necessary to provide a follow-up support milling device for mold surface contouring to solve the above-mentioned technical problems. Summary of the Invention

[0008] The technical problem solved by the present invention is to provide a follow-up support milling device for mold surface contouring machining that can realize automatic switching between rigid and flexible support, can make point contact and surface contact with the mold, so that the mold is subjected to uniform force and can quickly replace the flexible support airbag.

[0009] To solve the above-mentioned technical problems, the present invention provides a follow-up support milling device for mold surface contouring, comprising: a worktable, a milling chamber, and a milling seat. The milling chamber is disposed on the top of the worktable, and the milling seat is disposed inside the milling chamber. Both sides of the milling seat are fixedly mounted with a support frame, and both support frames are provided with a follow-up support mechanism. The follow-up support mechanism includes a rigid-flexible switching support component and an air intake component. The rigid-flexible switching support component is used to provide rigid-flexible support for the mold, and the air intake component is used to provide stable and controllable air pressure for the flexible support. The air intake component is installed on the top inner wall of the milling chamber.

[0010] Preferably, two guide rods are slidably mounted through and on each of the two support frames. The rigid-flexible switching support assembly is mounted on the two guide rods. The top of the two guide rods is fixedly mounted with the same fixing plate. A U-shaped slide plate is slidably mounted on the support frame. The top of the U-shaped slide plate contacts the bottom of the fixing plate. One end of a screw is rotatably mounted on the bottom of the U-shaped slide plate. The other end of the screw passes through to the bottom of the support frame and is fixedly mounted with a knob. The screw is threadedly connected to the support frame.

[0011] Preferably, any set of the rigid-flexible switching support components includes a follower box, two support legs, a mounting chamber, two airbags, and an air pump. The follower box is fixedly installed at the bottom end of the two guide rods, and a first spring is sleeved on the outer side of each of the two guide rods. The two ends of the first spring are fixedly connected to the support frame and the follower box, respectively. A cylinder is fixedly installed on the top of the follower box. The mounting chamber is slidably installed inside the follower box. The telescopic end of the cylinder extends into the follower box and is fixedly connected to the mounting chamber. Slide rails are fixedly installed on both outer walls of the follower box. Slide seats are slidably installed on both slide rails. The two support legs are fixedly installed on the bottom of the two slide seats, respectively. First toothed plates are fixedly installed on both outer walls of the mounting chamber. Second toothed plates are fixedly installed on the inner walls of the two slide seats on the side closest to each other. The inner walls of both sides of the follower box are provided with first connecting ports. Gears are rotatably installed in both first connecting ports. The gears mesh with the second toothed plates. The inner walls of both sides of the follower box are also provided with self-locking structures to lock the two slides. The installation chamber is provided with two chambers. Airbag fixing frames are provided in both chambers. Two airbags are fixedly installed in the two airbag fixing frames respectively. Multiple limiting plates are slidably installed through the two airbag fixing frames. Adhesive cloth is fixedly installed at the bottom of the multiple limiting plates. The adhesive cloth is fixedly connected to the bottom of the airbag. Multiple rotating connecting seats are rotatably installed at the bottom of the follower box. Rubber rollers are fixedly installed on the multiple rotating connecting seats. The outer wall of the rubber rollers contacts the outer wall of the installation chamber. Waterproof baffles are fixedly installed on the multiple rotating connecting seats.

[0012] Preferably, the air intake assembly includes two air pipes, two air intake check valves, an air box, and an air pump. The air box is fixedly installed on the top inner wall of the milling chamber, and the air pump is fixedly installed on the top inner wall of the milling chamber, with the exhaust end of the air pump fixedly connected to the air box. Both air intake check valves are fixedly installed at the bottom of the air box, and exhaust check valves are fixedly installed on the outer walls of both air intake check valves. One end of each of the two air pipes is respectively disposed on the two air bladders, and the other end of each of the two air pipes extends to the outside of the follower box and is fixedly connected to the two air intake check valves respectively.

[0013] Preferably, any set of the self-locking structures includes a slide groove, a locking rod, a guide slide rod, and multiple second springs. The slide groove is disposed on one outer wall of the mounting chamber. A second communication port is provided on one inner wall of the follower box. A locking hole is provided on one inner wall of the slide block. The locking rod is slidably installed in the second communication port. One end of the locking rod extends into the locking hole. A limiting plate is fixedly installed on the other end of the locking rod. One end of the guide slide rod is fixedly installed on the limiting plate. The other end of the guide slide rod extends into the slide groove and contacts the inner wall of the slide groove. One end of each of the multiple second springs is fixedly installed on one side of the limiting plate, and the other end of each of the multiple second springs is fixedly connected to the second communication port.

[0014] Furthermore, the inner wall of the chute is provided with an inclined surface.

[0015] Furthermore, the top of the worktable and the two sets of rigid-flexible switching support assemblies are each equipped with two sets of airbag replacement assemblies, which are used to replace the airbags. The milling chamber has openings on both sides.

[0016] Preferably, each airbag replacement assembly includes two mounting plates, multiple drag claws, a push rod, and a magnetic fixing plate. A mounting base is fixedly mounted on the top of the workbench. A limiting carrier is rotatably mounted on the top of the mounting base. A second motor is fixedly mounted on one outer wall of the mounting base, and the second motor is drive-connected to the limiting carrier. A connecting plate is slidably mounted on the limiting carrier. The two mounting plates are respectively fixedly mounted at both ends of the connecting plate. A first motor is fixedly mounted on the top of the limiting carrier, and the first motor is drive-connected to the connecting plate. Multiple drag claws are respectively fixedly mounted on the tops of the two mounting plates, and the push rod is fixedly mounted on one of the mounting plates. The mounting plate has an installation slot at the top of the mounting chamber, a top hole at the bottom of the mounting slot, a magnet fixing plate slidably installed in the mounting slot, a plurality of third springs are fixedly installed at the top of the magnet fixing plate, the other ends of the plurality of third springs are fixedly connected to the mounting chamber, a plurality of first magnets are fixedly installed at the bottom of the magnet fixing plate, a plurality of second magnets are fixedly installed at the top of the two airbag fixing frames, a second sealing head is fixedly installed at the air inlet of the airbag, a first sealing head is fixedly installed inside the magnet fixing plate, one end of the air tube is fixedly connected to the first sealing head, and the top end of the second sealing head extends into the first sealing head.

[0017] Furthermore, a first magnetic ring is fixedly installed at the bottom of the first sealing head, and a second magnetic ring is fixedly installed at the top of the second sealing head, with the first magnetic ring and the second magnetic ring attracting each other.

[0018] Furthermore, a third toothed plate is fixedly installed on the top of the connecting plate, and a drive gear is fixedly installed on the output shaft of the first motor, the drive gear meshing with the third toothed plate.

[0019] Compared with related technologies, the follow-up support milling device for mold surface contouring provided by the present invention has the following advantages:

[0020] This invention provides a follow-up support milling device for contour machining of mold curved surfaces. Through the cooperation of a rigid-flexible switching support component, an air intake component, and a self-locking structure, the cylinder drives the installation chamber to rise and fall, which in turn drives the first toothed plate to mesh with the gear, thereby linking the second toothed plate and the slide block. This allows for the extension and retraction of the support leg. When switching to rigid support, the support leg presses against the mold, and the inclined surface of the slide groove in the self-locking structure squeezes the guide slide rod, causing the locking rod to engage with the locking hole and lock the position of the support leg. This provides strong rigid positioning constraint, effectively resisting the impact of high cutting forces and preventing the mold from shifting or deforming during high-intensity machining. When switching to flexible support, the slide groove releases the pressure on the guide slide rod, the second spring pulls the locking rod to unlock the slide block, and the support leg retracts. At this time, the air intake component provides stable and controllable air pressure to the airbag, and the limiting plate restricts the expansion direction of the airbag, ensuring that the airbag and the bonding cloth are in flexible and tight contact with the curved surface of the mold. This allows it to fully adapt to the undulating contours of complex curved surfaces, achieving surface contact support and avoiding damage such as scratches and indentations on the mold surface caused by rigid contact.

[0021] By coordinating the airbag replacement assembly and its internal components, the airbag can be replaced quickly and accurately. The adsorption effect of the first magnet, the second magnet, and the magnetic ring enables the rapid positioning of the airbag fixing frame and the air circuit sealing connection, eliminating the need for tedious manual alignment and tightening operations. This significantly shortens the replacement time and reduces the downtime for device maintenance. At the same time, the transfer and replacement of new and old airbags can be completed in an orderly manner within the milling chamber, making the operation highly convenient and reducing the intensity of manual operation. Attached Figure Description

[0023] Figure 1 A schematic diagram of the first embodiment of the follow-up support milling device for mold surface contouring provided by the present invention;

[0024] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the milling chamber.

[0025] Figure 3 for Figure 2 The diagram shows the assembly of the air box, milling base, follower box, and support legs.

[0026] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the gas box.

[0027] Figure 5 for Figure 4 The diagram shows a partial sectional view of the structure.

[0028] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the follower box, mounting compartment, and slide.

[0029] Figure 7 for Figure 6 A partial structural assembly cross-sectional view is shown.

[0030] Figure 8 for Figure 6 An enlarged schematic diagram of part A shown;

[0031] Figure 9 for Figure 5 The diagram shows a cross-sectional view of the servo box.

[0032] Figure 10 for Figure 9 The diagram shows a sectional view of the servo box and installation compartment, among other structural components.

[0033] Figure 11 for Figure 9 The diagram shown illustrates the airbag and installation compartment being separated.

[0034] Figure 12 for Figure 11 The diagram shows a cross-sectional view of the airbag fixing frame.

[0035] Figure 13 A schematic diagram of the second embodiment of the follow-up support milling device for mold surface contouring provided by the present invention;

[0036] Figure 14 for Figure 13 The diagram shows a cross-sectional view of the milling chamber.

[0037] Figure 15 for Figure 14 The diagram shown shows a portion of the structure in a separated state.

[0038] Figure 16 for Figure 14 The diagram shows a cross-sectional view of the following components, including the servo box, mounting compartment, and magnet fixing plate.

[0039] Figure 17 for Figure 16 The diagram shows a cross-sectional view of the installation chamber and magnet fixing plate, among other structures.

[0040] Figure 18 for Figure 17 An enlarged schematic diagram of part B is shown.

[0041] Numbered in the diagram: 1. Worktable; 2. Milling chamber; 3. Follower box; 4. Milling seat; 5. Exhaust check valve; 6. Intake check valve; 7. Air box; 8. Air pump; 9. Support leg; 10. Slide; 11. Air pipe; 12. Screw; 13. U-shaped slide plate; 14. Cylinder; 15. Guide rod; 16. First spring; 17. Knob; 18. Waterproof baffle; 19. Airbag; 20. First gear plate; 21. Second gear plate; 22. Gear; 2 3. Installation chamber; 24. Clamping rod; 25. Second spring; 26. Guide slide rod; 27. Slide groove; 28. Rubber roller; 29. ​​Airbag fixing frame; 30. Limiting plate; 31. Mounting plate; 32. Drag claw; 33. Connecting plate; 34. First motor; 35. Top rod; 36. Second motor; 37. First magnet; 38. Magnet fixing plate; 39. Third spring; 40. Second magnet; 41. First sealing head; 42. Second sealing head. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] First embodiment:

[0045] Please refer to the following: Figures 1-12 In the first embodiment of the present invention, the follow-up support milling device for mold surface contouring includes: a worktable 1, a milling chamber 2, and a milling seat 4. The milling chamber 2 is disposed on the top of the worktable 1, and the milling seat 4 is disposed inside the milling chamber 2. Both sides of the milling seat 4 are fixedly mounted with a support frame, and both support frames are provided with a follow-up support mechanism. The follow-up support mechanism includes a rigid-flexible switching support component and an air intake component. The rigid-flexible switching support component is used to provide rigid-flexible support for the mold, and the air intake component is used to provide stable and controllable air pressure for the flexible support. The air intake component is installed on the top inner wall of the milling chamber 2.

[0046] Two guide rods 15 are slidably mounted through and on each of the two support frames. A rigid-flexible switching support assembly is mounted on the two guide rods 15. The top of the two guide rods 15 is fixedly mounted on the same fixed plate. A U-shaped slide plate 13 is slidably mounted on the support frame. The top of the U-shaped slide plate 13 contacts the bottom of the fixed plate. One end of a screw 12 is rotatably mounted on the bottom of the U-shaped slide plate 13. The other end of the screw 12 passes through to the bottom of the support frame and is fixedly mounted with a knob 17. The screw 12 is threadedly connected to the support frame. Rotating the knob 17 to adjust the screw 12 can precisely control the preload of the first spring 16, adapting to molds of different materials and curvatures, and expanding the applicability of the device.

[0047] Each set of rigid-flexible switching support components includes a follower box 3, two support legs 9, a mounting chamber 23, two airbags 19, and an air pump 8. The follower box 3 is fixedly installed at the bottom end of two guide rods 15, and a first spring 16 is sleeved on the outer side of each of the two guide rods 15. The two ends of the first spring 16 are fixedly connected to the support frame and the follower box 3, respectively. A cylinder 14 is fixedly installed on the top of the follower box 3. The mounting chamber 23 is slidably installed inside the follower box 3. The telescopic end of the cylinder 14 extends into the follower box 3 and is fixedly connected to the mounting chamber 23. Slide rails are fixedly installed on both outer walls of the follower box 3, and slide blocks 10 are slidably installed on each of the two slide rails. Support legs 9 are fixedly installed at the bottom of the two slides 10. First toothed plates 20 are fixedly installed on both outer walls of the mounting chamber 23. Second toothed plates 21 are fixedly installed on the inner walls of the two slides 10 on their adjacent sides. First connecting ports are provided on both inner walls of the follower box 3. Gears 22 are rotatably installed in both first connecting ports, meshing with the second toothed plates 21. Self-locking structures for locking the two slides 10 are also provided on both inner walls of the follower box 3. The mounting chamber 23 has two chambers, each containing an airbag fixing frame 29. Two airbags 19 are fixedly installed in the two airbag fixing frames 29. Multiple limiting plates 30 are slidably installed through and on the fixed frame 29. A bonding cloth is fixedly installed at the bottom end of each limiting plate 30, and the bonding cloth is fixedly connected to the bottom of the airbag 19. Multiple rotating connecting seats are rotatably installed at the bottom of the follower box 3. Rubber rollers 28 are fixedly installed on each rotating connecting seat. The outer wall of the rubber rollers 28 contacts the outer wall of the mounting chamber 23. Waterproof baffles 18 are fixedly installed on each rotating connecting seat. The waterproof baffles 18 can automatically prevent chips and coolant from entering the follower box 3, extending the service life of the transmission components. When switching to rigid support, the support leg 9 presses against the mold, cooperating with the sliding groove 27 in the self-locking structure to tilt. The inclined plane presses the guide slide 26, causing the locking rod 24 to engage with the locking hole and lock the position of the support leg 9. This provides strong rigidity and positioning constraint, effectively resisting the impact of high cutting force and preventing the mold from shifting or deforming during high-intensity processing. When switching to flexible support, the slide groove 27 releases the pressure on the guide slide 26, the second spring 25 pulls the locking rod 24 to unlock the slide block 10, the support leg 9 is retracted, and the limiting plate 30 restricts the expansion direction of the airbag 19, ensuring that the airbag 19 and the bonding cloth are in close and flexible contact with the mold surface. This allows it to fully adapt to the undulating contours of complex curved surfaces, achieving surface contact support and avoiding damage such as scratches and indentations on the mold surface caused by rigid contact.

[0048] The air intake assembly includes two air pipes 11, two air intake check valves 6, an air box 7, and an air pump 8. The air box 7 is fixedly installed on the top inner wall of the milling chamber 2, and the air pump 8 is fixedly installed on the top inner wall of the milling chamber 2, with its exhaust end fixedly connected to the air box 7. Both air intake check valves 6 are fixedly installed at the bottom of the air box 7, and exhaust check valves 5 are fixedly installed on the outer walls of both air intake check valves 6. One end of each of the two air pipes 11 is respectively set on one of the two air bags 19, and the other end of each of the two air pipes 11 extends to... Outside the moving box 3, it is fixedly connected to two air inlet one-way valves 6 respectively. When the air pump 8 is started, the air pump 8 inflates the air box 7. The gas is delivered to the two airbags 19 in the installation chamber 23 through the air inlet one-way valve 6 and the air pipe 11. When the airbag 19 expands downward, the limiting plate 30 will move with the airbag 19 to prevent the airbag 19 from expanding too much to all sides until the bonding cloth at the bottom of the airbag 19 flexibly fits the curved surface of the mold. At this time, the exhaust one-way valve 5 is in the closed state to maintain the stable air pressure in the airbag 19, thereby achieving surface contact support.

[0049] Each set of self-locking structures includes a slide groove 27, a locking rod 24, a guide slide rod 26, and multiple second springs 25. The slide groove 27 is located on one outer wall of the mounting chamber 23, and the inner wall of the slide groove 27 has an inclined surface. The inner wall of one side of the follower box 3 has a second connecting port, and the inner wall of one side of the slide seat 10 has a locking hole. The locking rod 24 is slidably installed in the second connecting port, with one end of the locking rod 24 extending into the locking hole and the other end of the locking rod 24 fixedly installed with a limiting plate. One end of the guide slide rod 26 is fixedly installed on the limiting plate, and the other end of the guide slide rod 26 extends into the slide groove 27 and contacts the inner wall of the slide groove 27. One end of each of the multiple second springs 25 is fixedly installed on one side of the limiting plate, and the other end of each of the multiple second springs 25 is fixedly connected to the second connecting port. The self-locking structure can automatically lock and unlock the support leg 9 when switching between rigid and flexible modes, improving support stability and avoiding displacement of the support structure caused by milling vibration.

[0050] In this embodiment:

[0051] Open the milling chamber 2, place the mold on the top of the worktable 1 and position it. Turn the knob 17 to drive the screw 12 to rotate. The screw 12 drives the U-shaped slide plate 13 to rise through the threaded connection with the support frame. The U-shaped slide plate 13 drives the fixed plate to rise, and drives the follower box 3 to rise through the guide rod 15. At the same time, the first spring 16 is compressed. At this time, the elastic clamping force of the support leg 9 on the mold is enhanced, ensuring that the bottom end of the support leg 9 can fit tightly with the mold when milling the mold. Close the milling chamber 2 and start milling the mold.

[0052] As the milling base 4 descends, the follower box 3 also descends. The bottom end of the support leg 9 first contacts the mold surface and supports and fixes the mold. Then, the milling head on the milling base 4 mills the mold. When flexible support is required, the cylinder 14 is activated. The telescopic end of the cylinder 14 pushes the mounting chamber 23 down along the inner wall of the follower box 3. At this time, the rubber roller 28 drives the waterproof baffle 18 to rotate through friction, opening the bottom of the follower box 3. The mounting chamber 23 drives the first toothed plates 20 on both sides to move down synchronously. The first toothed plates 20 mesh and drive the gear 22 to rotate. The gear 22 drives the second toothed plate 21 and the slide block 10 to rise along the slide rail. The support leg 9 rises and no longer presses against the mold surface. Simultaneously, when the installation chamber 23 moves down, the slide groove 27 on its outer wall no longer squeezes the guide slide rod 26. The second spring 25 pulls the locking rod 24 to disengage from the locking hole of the slide block 10 through the reset, releasing the self-locking. When the installation chamber 23 descends to the specified height, the cylinder 14 is closed and the air pump 8 is started. The air pump 8 fills the air box 7 with air. The gas is delivered to the two airbags 19 in the installation chamber 23 through the air inlet one-way valve 6 and the air pipe 11. When the airbag 19 expands downward, the limiting plate 30 will move with the airbag 19 to prevent the airbag 19 from expanding too much to all sides until the bonding cloth at the bottom of the airbag 19 is flexibly bonded to the curved surface of the mold. At this time, the exhaust one-way valve 5 is in the closed state to maintain the stable air pressure in the airbag 19.

[0053] When rigid support is required, the air pump 8 is turned off and the exhaust check valve 5 is opened to discharge the gas in the airbag 19. At this time, the airbag 19 contracts, the cylinder 14 is activated, and the installation chamber 23 is raised through the telescopic end. The waterproof baffle 18 rotates and closes the bottom of the follower box 3. The gear 22 is rotated again through the engagement of the first toothed plate 20. The gear 22 drives the second toothed plate 21 and the slide block 10 to move down along the slide rail. The support leg 9 presses against the mold surface. At the same time, the slide groove 27 squeezes the guide slide rod 26, and the locking rod 24 is locked into the locking hole of the slide block 10.

[0054] Second embodiment:

[0055] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0056] Please refer to the following: Figures 13-18 In the follow-up support milling device for mold surface contouring provided in this embodiment, the top of the worktable 1 and the two sets of rigid-flexible switching support components are each provided with two sets of airbag replacement components. The airbag replacement components are used to replace the airbags. The milling chamber 2 has openings on both sides.

[0057] Each airbag replacement assembly includes two mounting plates 31, multiple drag claws 32, a push rod 35, and a magnetic fixing plate 38. A mounting base is fixedly mounted on the top of the workbench 1. A limiting carrier is rotatably mounted on the top of the mounting base. A second motor 36 is fixedly mounted on one outer wall of the mounting base, and the second motor 36 is drive-connected to the limiting carrier. A connecting plate 33 is slidably mounted on the limiting carrier. Two mounting plates 31 are respectively fixedly mounted at both ends of the connecting plate 33. A first motor 34 is fixedly mounted on the top of the limiting carrier, and the first motor 34 is drive-connected to the connecting plate 33. A third gear plate is fixedly mounted on the top of the connecting plate 33. A drive gear is fixedly mounted on the output shaft of the first motor 34, and the drive gear meshes with the third gear plate. Multiple drag claws 32 are respectively fixedly installed on the top of two mounting plates 31. A top rod 35 is fixedly installed on the top of one of the mounting plates 31. The mounting chamber 23 is provided with a mounting groove, and the bottom of the mounting groove is provided with a top hole. A magnet fixing plate 38 is slidably installed in the mounting groove. One end of multiple third springs 39 is fixedly installed on the top of the magnet fixing plate 38, and the other end of multiple third springs 39 is fixedly connected to the mounting chamber 23. Multiple first magnets 37 are fixedly installed on the bottom of the magnet fixing plate 38. Multiple second magnets 40 are fixedly installed on the top of each of the two airbag fixing frames 29. A second sealing head 42 is fixedly installed on the air port of the airbag 19. A first sealing head 41 is fixedly installed inside the magnet fixing plate 38. One end of the air pipe 11 is connected to the first sealing head 42. A sealing head 41 is fixedly connected, and the top of a second sealing head 42 extends into the first sealing head 41. A first magnetic ring is fixedly installed at the bottom of the first sealing head 41, and a second magnetic ring is fixedly installed at the top of the second sealing head 42. The first and second magnetic rings attract each other. The attraction between the first magnet 37, the second magnet 40, and the magnetic rings enables the rapid positioning and air circuit sealing connection of the airbag fixing frame 29, eliminating the need for cumbersome manual alignment and tightening operations, significantly shortening replacement time and reducing device downtime for maintenance. The drag claw 32 pulls the airbag fixing frame 29 containing the new airbag into the chamber. When the airbag fixing frame 29 approaches the magnet fixing plate 38, the first magnet 37 and the second magnet 40 attract each other, pulling the airbag fixing frame 29. Precise positioning is achieved, with the first sealing head 41 and the second sealing head 42 aligned. The first magnetic ring of the first sealing head 41 and the second magnetic ring of the second sealing head 42 adhere to each other, completing the installation of the airbag. The push rod 35 is inserted into the top hole. At this time, the top of the push rod 35 pushes the magnet fixing plate 38 upward, compressing the third spring 39. When the magnet fixing plate 38 moves upward, the first magnet 37 at its bottom disengages from the second magnet 40 at the top of the airbag fixing frame 29. Simultaneously, the first sealing head 41 moves upward with the magnet fixing plate 38, separating from the second sealing head 42 of the airbag 19, thus disconnecting the air passage connection between the air tube 11 and the airbag 19. The push rod 35 continues to push upward, allowing the magnet fixing plate 38 to fully enter the installation groove, thus completing the disassembly of the airbag 19.

[0058] In this embodiment:

[0059] Ensure the airbag 19 is initially in the retracted state. Start the first motor 34. The output shaft of the first motor 34 drives the drive gear to rotate, which in turn moves the connecting plate 33 through meshing with the third gear plate. This moves the mounting plate 31 with the push rod 35 towards the follower box 3, aligning the mounting plate 31 with the mounting chamber 23 below the follower box 3. The push rod 35 is aligned with the top hole at the bottom of the mounting chamber 23. Then, the milling seat 4 is lowered, and the cylinder 14 is activated. The telescopic end of the cylinder 14 lowers the mounting chamber 23, inserting the push rod 35 into the top hole. At this time, the top of the push rod 35 pushes the magnet fixing plate 38 upwards, compressing the third spring 39. As the magnet fixing plate 38 moves upwards, the first magnet 37 at its bottom disengages from the second magnet 40 at the top of the airbag fixing frame 29. Simultaneously, the first sealing head 41 moves upwards with the magnet fixing plate 38, separating from the second sealing head 42 of the airbag 19, disconnecting the air pipe 11 from the airbag 19. The push rod 35 continues to push upwards, allowing the magnet fixing plate 38 to fully enter the mounting groove. At this point, the drag claws 32 on the mounting plate 31 engage with the bottom edge of the airbag fixing frame 29. The starting cylinder 14 drives the mounting chamber 23 to rise, moving it away from the drag claws 32. The magnetic fixing plate 38 drives the first magnet 37 to descend. Then, the airbag fixing frame 29 containing the new airbag is placed on another set of drag claws 32. The second motor 36 is started, and the second motor 36 drives the connecting plate 33 to rotate, moving the airbag 19 to be replaced out of the milling chamber 2. Meanwhile, the airbag fixing frame 29 containing the new airbag moves to the follow-up position. Directly below the box 3, the cylinder 14 is activated again to lower the installation chamber 23. The drag claw 32 pulls the airbag fixing frame 29 containing the new airbag into the chamber. When the airbag fixing frame 29 approaches the magnet fixing plate 38, the first magnet 37 and the second magnet 40 attract each other, pulling the airbag fixing frame 29 to a precise position. At the same time, the first sealing head 41 and the second sealing head 42 are aligned, and the first magnetic ring of the first sealing head 41 and the second magnetic ring of the second sealing head 42 are attracted and adhered, completing the installation of the new airbag.

[0060] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A follower-support milling device for contour machining of mold surfaces, comprising: The worktable (1), milling chamber (2) and milling seat (4) are provided. The milling chamber (2) is located on the top of the worktable (1) and the milling seat (4) is located inside the milling chamber (2). The milling seat (4) is characterized in that a bearing frame is fixedly installed on both sides of the milling seat (4). A follow-up support mechanism is provided on both bearing frames. The follow-up support mechanism includes a rigid-flexible switching support component and an air intake component. The rigid-flexible switching support component is used to provide rigid-flexible support for the mold. The air intake component is used to provide stable and controllable air pressure for the flexible support. The air intake component is installed on the top inner wall of the milling chamber (2).

2. The follow-up support milling device for mold surface contouring according to claim 1, characterized in that, Two guide rods (15) are slidably mounted on each of the two support frames. The rigid-flexible switching support assembly is mounted on the two guide rods (15). The top of the two guide rods (15) is fixedly mounted with the same fixing plate. A U-shaped slide plate (13) is slidably mounted on the support frame. The top of the U-shaped slide plate (13) is in contact with the bottom of the fixing plate. One end of a screw (12) is rotatably mounted on the bottom of the U-shaped slide plate (13). The other end of the screw (12) passes through the bottom of the support frame and is fixedly mounted with a knob (17). The screw (12) is threadedly connected to the support frame.

3. The follow-up support milling device for mold surface contouring according to claim 2, characterized in that, Each set of the rigid-flexible switching support components includes a follower box (3), two support legs (9), an installation chamber (23), two airbags (19), and an air pump (8). The follower box (3) is fixedly installed at the bottom end of the two guide rods (15), and a first spring (16) is sleeved on the outer side of each of the two guide rods (15). The two ends of the first spring (16) are fixedly connected to the support frame and the follower box (3) respectively. A cylinder (14) is fixedly installed on the top of the follower box (3). The installation chamber (23) slides. Installed inside the follower box (3), the telescopic end of the cylinder (14) extends into the follower box (3) and is fixedly connected to the mounting chamber (23). Slide rails are fixedly installed on both outer walls of the follower box (3), and slide blocks (10) are slidably installed on both slide rails. Two support legs (9) are fixedly installed at the bottom of the two slide blocks (10). First toothed plates (20) are fixedly installed on both outer walls of the mounting chamber (23), and second toothed plates (20) are fixedly installed on the inner walls of the sides of the two slide blocks (10) that are close to each other. The toothed plate (21) and the inner walls of the follower box (3) are provided with first connecting ports on both sides. Gears (22) are rotatably installed in both first connecting ports. The gears (22) mesh with the second toothed plate (21). The inner walls of both sides of the follower box (3) are also provided with self-locking structures for locking the two slides (10). The mounting chamber (23) is provided with two chambers. Airbag fixing frames (29) are provided in both chambers. The two airbags (19) are respectively fixedly installed in the two airbag fixing frames (29). Multiple limiting plates (30) are slidably installed through each of the airbag fixing frames (29). A bonding cloth is fixedly installed at the bottom of each of the multiple limiting plates (30). The bonding cloth is fixedly connected to the bottom of the airbag (19). Multiple rotating connecting seats are rotatably installed at the bottom of the follower box (3). A rubber roller (28) is fixedly installed on each of the multiple rotating connecting seats. The outer wall of the rubber roller (28) is in contact with the outer wall of the installation chamber (23). A waterproof baffle (18) is fixedly installed on each of the multiple rotating connecting seats.

4. The follow-up support milling device for mold surface contouring according to claim 3, characterized in that, The air intake assembly includes two air pipes (11), two air intake check valves (6), an air box (7), and an air pump (8). The air box (7) is fixedly installed on the top inner wall of the milling chamber (2). The air pump (8) is fixedly installed on the top inner wall of the milling chamber (2), and the exhaust end of the air pump (8) is fixedly connected to the air box (7). The two air intake check valves (6) are fixedly installed at the bottom of the air box (7). The outer walls of the two air intake check valves (6) are fixedly installed with exhaust check valves (5). One end of the two air pipes (11) is respectively set on the two air bags (19), and the other end of the two air pipes (11) extends to the outside of the follower box (3) and is fixedly connected to the two air intake check valves (6).

5. The follow-up support milling device for mold surface contouring according to claim 3, characterized in that, Each set of the self-locking structures includes a slide groove (27), a locking rod (24), a guide slide rod (26), and multiple second springs (25). The slide groove (27) is located on one side of the outer wall of the mounting chamber (23). The inner wall of one side of the follower box (3) is provided with a second communication port. The inner wall of one side of the slide block (10) is provided with a locking hole. The locking rod (24) is slidably installed in the second communication port. One end of the locking rod (24) extends into the locking hole. The other end of the locking rod (24) is fixedly installed with a limiting plate. One end of the guide slide rod (26) is fixedly installed on the limiting plate. The other end of the guide slide rod (26) extends into the slide groove (27) and contacts the inner wall of the slide groove (27). One end of each of the multiple second springs (25) is fixedly installed on one side of the limiting plate, and the other end of each of the multiple second springs (25) is fixedly connected to the second communication port.

6. The follow-up support milling device for mold surface contouring according to claim 5, characterized in that, The inner wall of the groove (27) is provided with an inclined surface.

7. The follow-up support milling device for mold surface contouring according to claim 4, characterized in that, The top of the workbench (1) and the two sets of rigid-flexible switching support components are each provided with two sets of airbag replacement components. The airbag replacement components are used to replace the airbags. The milling chamber (2) has openings on both sides.

8. The follow-up support milling device for mold surface contouring according to claim 7, characterized in that, Each airbag replacement assembly includes two mounting plates (31), multiple drag claws (32), a push rod (35), and a magnetic fixing plate (38). A mounting base is fixedly installed on the top of the workbench (1). A limiting carrier is rotatably installed on the top of the mounting base. A second motor (36) is fixedly installed on one outer wall of the mounting base. The second motor (36) is driven by the limiting carrier. A connecting plate (33) is slidably installed on the limiting carrier. The two mounting plates (31) are respectively fixedly installed at both ends of the connecting plate (33). A first motor (34) is fixedly installed on the top of the limiting carrier. The first motor (34) is driven by the connecting plate (33). Multiple drag claws (32) are respectively fixedly installed on the tops of the two mounting plates (31). The push rod (35) is fixedly installed on one of the mounting plates (31). At the top, the installation chamber (23) is provided with an installation groove, the bottom of the installation groove is provided with a top hole, the magnet fixing plate (38) is slidably installed in the installation groove, the top of the magnet fixing plate (38) is fixedly installed with one end of a plurality of third springs (39), the other end of the plurality of third springs (39) is fixedly connected to the installation chamber (23), the bottom of the magnet fixing plate (38) is fixedly installed with a plurality of first magnets (37), the top of the two airbag fixing frames (29) is fixedly installed with a plurality of second magnets (40), the air inlet of the airbag (19) is fixedly installed with a second sealing head (42), the magnet fixing plate (38) is fixedly installed with a first sealing head (41), one end of the air pipe (11) is fixedly connected to the first sealing head (41), and the top end of the second sealing head (42) extends into the first sealing head (41).

9. The follow-up support milling device for mold surface contouring according to claim 8, characterized in that, A first magnetic ring is fixedly installed at the bottom of the first sealing head (41), and a second magnetic ring is fixedly installed at the top of the second sealing head (42). The first magnetic ring and the second magnetic ring attract each other.

10. The follow-up support milling device for mold surface contouring according to claim 8, characterized in that, A third toothed plate is fixedly installed on the top of the connecting plate (33), and a drive gear is fixedly installed on the output shaft of the first motor (34), the drive gear meshing with the third toothed plate.

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