False tooth laser cutting equipment and cutting method

Abstract

The invention discloses false tooth laser cutting equipment and a cutting method, and belongs to the technical field of false tooth laser cutting. The false tooth laser cutting equipment comprises a shell, a machining frame is fixedly connected into the shell, an inner cavity is formed in the machining frame, a sliding plate is slidably connected to the inner wall of the inner cavity, a cutting erasing mechanism is arranged at the top of the sliding plate, and a cutting positioning mechanism is arranged in the inner cavity; a connecting column is fixedly connected to the bottom of the sliding plate in a penetrating mode, a laser cutting assembly is fixedly installed in the shell, the cutting and wiping mechanism comprises a plurality of cleaning rollers arranged above the sliding plate, the cleaning rollers rotate in the process of synchronously moving downwards along with the false teeth, and the stability of the false teeth during cutting is ensured; the cutting positioning mechanism comprises a plurality of expansion plates which take the connecting column as a shaft and are arranged at the symmetrical positions of the cleaning roller shaft, the situation that the false teeth need to be adjusted for multiple times can be avoided through the cutting positioning mechanism, and the overall laser cutting machining time of the single false teeth is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting processing of dentures, and particularly relates to a laser cutting device and method for dentures. BACKGROUND

[0002] Dentures are commonly known as "false teeth". Just as "false legs" and "prostheses" are called "prostheses", "dentures" mean "duty" teeth for humans, and in medicine, dentures refer to the general term for the prostheses made after the upper and lower jaw teeth are partially or completely missing. Dentures are divided into two types: fixed and removable. Fixed dentures cannot be taken off by the patient, and the healthy teeth on both sides of the missing teeth are used for support, which is suitable for the case of full-mouth tooth loss with few remaining teeth. Removable dentures can be easily taken off and worn by the patient, and the healthy teeth on both sides of the missing teeth are used for support to fix the false teeth in the oral cavity. There are many materials that can be used to make dentures. In the field of metal dentures, cobalt-chromium alloy is the most commonly used metal denture material. Its advantages include high strength, durability, lightness, small foreign body sensation, good thermal conductivity, smooth surface, and difficulty in accumulating plaque. Traditional cutting methods (such as using small drill bits) have difficulty in processing hard materials such as cobalt-chromium alloy. Because cobalt-chromium alloy has poor thermal conductivity, heat cannot be quickly dissipated, and will concentrate in the small area where the drill bit tip and the workpiece contact, forming a local high temperature, increasing the difficulty of subsequent cutting, and forming a vicious cycle. Existing laser cutting technology has significant advantages in processing precision, material adaptability, efficiency and cost, and process controllability compared to traditional methods.

[0003] In the processing of metal dentures, laser cutting processing is first required. When the traditional processing equipment clamps the outer wall mainly made of cobalt-chromium alloy, the presence of the clamp will directly affect the cutting processing area of the laser cutting head. Therefore, the machine needs to be stopped, and then the clamp is controlled to loosen the workpiece. Then the clamping position is adjusted again, and the workpiece is fixed again. The clamping surface that has not been cut by the laser will not be blocked by the clamp. At this time, the laser cutting processing of the surface of the denture that has not been processed can be performed again. This repeated process not only affects the work efficiency, but also easily introduces new positioning errors and repeated positioning errors during each re-clamping, increasing the risk of deviation during laser cutting. The operator needs to frequently intervene to adjust the positioning, which increases the labor cost and is prone to errors. At the same time, the external clamp needs to apply clamping force in real time during the cutting process, which will cause the contact position between the clamp and the cobalt-chromium alloy material to easily appear metal indentation, scratch or deformation during cutting, affecting the strength, appearance and function of the metal denture. SUMMARY

[0004] The purpose of the present application is to provide a laser cutting device and method for dentures.

[0005] In order to achieve the above object, the application adopts a denture laser cutting device, which comprises a shell, a processing rack fixedly connected inside the shell, an inner cavity opened in the inside of the processing rack, a sliding plate slidingly connected to the inner wall of the inner cavity, a cutting and erasing mechanism arranged on the top of the sliding plate, a cutting positioning mechanism arranged in the inside of the inner cavity, a connecting column fixedly connected through the bottom of the sliding plate, a laser cutting assembly fixedly installed in the inside of the shell, a first spring fixedly connected to the bottom of the sliding plate, and the inner wall of the inner cavity fixedly connected to the end of the first spring away from the sliding plate; The cutting and erasing mechanism comprises a plurality of cleaning rollers arranged above the sliding plate, which rotate during the synchronous downward movement of the cleaning rollers and the denture, so as to ensure the cleanliness of the inside of the denture connecting hole. The cutting positioning mechanism comprises a plurality of expansion plates arranged in the axisymmetric position of the cleaning rollers with the connecting column as the shaft, which synchronously diffuse away to complete the accurate positioning of the denture. The bottom of the processing rack is provided with a conversion mechanism to automatically switch the working position of the cutting and erasing mechanism and the cutting positioning mechanism, so as to ensure the smoothness of the laser cutting process.

[0006] Further, the cutting and erasing mechanism comprises a fixed column, a threaded rod rotatingly connected through the inside of the fixed column by threads, a second spring fixedly connected to the end of the threaded rod inside the fixed column, a plurality of connecting blocks fixedly connected to the outer wall of the end of the threaded rod away from the fixed column, a sliding block slidingly connected through the inner wall of the connecting block, a third spring fixedly connected to the end of the sliding block inside the connecting block, a rotating shaft fixedly connected to the end of the sliding block away from the third spring, a connecting plate rotatingly connected to the outer wall of the rotating shaft, a pull rope fixedly connected between the outer wall of the connecting plate and the outer wall of the connecting block, and the end of the cleaning roller rotatingly connected to the side wall of the connecting plate.

[0007] Further, the bottom of the fixed column is fixedly connected to the top of the sliding plate, and the end of the second spring away from the threaded rod is fixedly connected to the inner wall of the fixed column.

[0008] Further, the cutting positioning mechanism comprises a sliding column, an extrusion column is slidably connected in the sliding column, a fourth spring is fixedly connected to the top of the extrusion column, a plurality of fixed blocks are fixedly connected to the outer wall of the extrusion column, a first hinged plate is rotatably connected to the end of the fixed blocks, another fixed block is fixed to the inner wall of the sliding column, and another first hinged plate is rotatably connected to the end of the fixed block, the two first hinged plates are rotatably connected to the end away from the fixed block, the side wall of the movable block is fixedly connected to the side wall of the expansion plate, the expansion plate is slidably connected in the sliding column, a groove is formed in the outer wall of the sliding column, a second hinged plate is rotatably connected to the inner wall of the groove, a first telescopic rod is rotatably connected to the inner wall of the groove, the end of the second hinged plate is rotatably connected to the end of the first telescopic rod, and a second telescopic rod is slidably connected in the sliding column, and a limiting plate is fixedly connected to the bottom of the second telescopic rod.

[0009] Further, the outer wall of the sliding column is fixedly connected in the inner part of the sliding plate, a through hole is formed in the inner wall of the inner cavity, the outer wall of the sliding column is slidably connected to the inner wall of the through hole, the bottom of the extrusion column corresponds to the top of the second telescopic rod, one end of the fourth spring is fixedly connected to the inner wall of the sliding column, the outer wall of the limiting plate is slidably connected in the sliding column, and the bottom of the limiting plate is slidably connected to the top of the machining frame.

[0010] Further, the conversion mechanism comprises a limiting ring, and a slope surface is symmetrically formed in the bottom and top of the limiting ring, and the two slope surfaces are connected end to end, a torsion shaft is rotatably connected to the outer wall of the limiting ring through a torsion spring, a limiting block is fixedly connected to the outer wall of the torsion shaft, two limiting rods are fixedly connected to the outer wall of the connecting column, and the outer walls of the two limiting rods correspond to the outer walls of the corresponding limiting blocks.

[0011] Further, the inner wall of the shell is fixedly installed with an electric push rod, and the output shaft of the electric push rod is fixedly connected with a sleeve.

[0012] Further, the outer wall of the shell is fixedly installed with an observation window, and the outer wall of the shell is rotatably connected with a cabinet door, and the side wall of the cabinet door is slidably connected with an operating port.

[0013] A method for laser cutting a denture, comprising the following steps: Pre-cleaning: Before the denture processing, the particles in the connecting hole of the bottom of the denture are cleaned to facilitate subsequent operation. The operator puts his hand through the operation port into the shell, presses the denture down from above the cutting and scraping mechanism, squeezes the inclined cleaning roller to make it shrink, drives the sliding block to slide, compresses the third spring, and the cleaning roller enters the connecting hole and rotates to fit the inner wall. The denture continues to move down to drive the threaded rod to rotate and move down, compressing the second spring, the cleaning roller rotates to scrape the particles in the connecting hole, and adapts to different tolerances and deviations to achieve close fitting and effective cleaning. Force conversion: drive the electric push rod, the sleeve of the output shaft is lifted, contacts and squeezes several second hinged plates, makes them shrink and fit to the inner wall of the groove, releases the limit of the sliding column, then the first spring force drives the sliding plate to rise, during which the limit rod drives the connecting column to rotate half a circle again, at this time the cutting positioning mechanism is displaced and rotates to the processing position in front of the operator; Positioning and cutting: the connecting hole of the denture is aligned and clamped to the top of the sliding column, the sliding column is squeezed to drive the sliding plate to slide down along the inner wall of the cavity, the second telescopic rod is relatively displaced with the inner wall of the sliding column, the fixed block is moved by the squeezing column, then the first hinged plate squeezes the movable block, the expansion plate spreads outward, contacts and supports the inner wall of the connecting hole of the denture, increases the friction, realizes the positioning and clamping of the denture, then the laser emitting assembly moves through the adjusting part to realize the laser cutting of the denture material.

[0014] Compared with the prior art, the above scheme has the following beneficial effects: 1. The emitting assembly in the laser cutting assembly is driven by the three-coordinate high-precision moving platform to cut the metal denture. In order to ensure the stability of the denture during cutting, the threaded rod rotates while displacing downward along the fixed column, so that the threaded rod drives the corresponding cleaning roller to rotate and fit the inner wall of the connecting hole of the metal denture through the connecting blocks, and the design of the third spring pressurized cleaning roller is used to adapt to different size tolerances and slight shape deviations of the connecting hole. In the casting process of cobalt-chromium alloy denture, the denture is wrapped in a high-temperature resistant material called "investment material", then the shell needs to be knocked down to take out the denture after casting is completed. At this time, the inside and edges of the deep hole and the fine hole of the denture are easy to leave small particles of investment material. Therefore, the particles remaining on the inner wall of the denture can be completely scraped off to ensure the tightness of the expansion plate and the inner wall of the metal denture before cutting, so that the denture will not be affected by factors such as particles during laser cutting, and the phenomenon of slipping, deviation and inaccurate positioning will not occur, which affects the quality of the finished product after cutting.

[0015] 2. The outward diffusion effect is achieved by the compression of the movable block by the first hinge plate. During this process, the outer walls of several expansion plates will contact the locking slide, causing several expansion plates to shift and support the inner wall of the denture connection hole at the end of the moving column. Since the clamping force comes from the internal support, the entire outer surface of the metal denture is completely exposed. The subsequent laser cutting process can move freely from any angle and direction to perform laser cutting on any surface of the metal denture. There is no need to worry about the traditional fixture blocking the cutting path. Thus, the laser cutting of all surfaces can be completed in one clamping, eliminating the need for repeated disassembly, adjustment, reclamping, and repositioning of the laser cutting head. This significantly shortens the overall laser cutting time of a single denture. The one-time clamping and laser cutting fundamentally avoids the errors caused by multiple adjustments, improving the practicality and accuracy of the equipment for laser cutting of metal dentures.

[0016] 3. By driving the electric push rod to lift the sleeve, the sleeve will contact the outer wall of several second hinge plates and squeeze them, causing the second hinge plates to shrink and fit against the inner wall of the groove. At this time, the sliding column is no longer limited by the second hinge plates. Then, the sliding plate will be driven to rise by the elastic force of the first spring. Then, the limiting rod will drive the connecting column to rotate half a turn. This realizes that the position of the cutting and erasing mechanism or the cutting and positioning mechanism will be rotated after each processing, which can ensure the correct operation of the equipment process and avoid errors in the processing process. By always automatically rotating the workstation to be processed in front of the operator, the metal dentures can be picked up and put away without having to walk around the equipment, reducing the difficulty of operating the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the housing proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the processing rack proposed in this invention; Figure 4 This is a schematic diagram of the internal structure of the fixed column proposed in this invention; Figure 5 This is a schematic diagram of the transmission structure of the connecting block and connecting plate proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the sliding column proposed in this invention; Figure 7 The present invention proposes Figure 6 Enlarged view of point A in the middle; Figure 8 The present invention proposes Figure 6 Enlarged view at point B in the middle; Figure 9The schematic diagram of the structure transmission of the limiting ring and the limiting rod.

[0018] The signs in the drawings are as follows: 1, shell; 2, processing frame; 3, inner cavity; 4, sliding plate; 5, cutting and erasing mechanism; 6, cutting positioning mechanism; 7, conversion mechanism; 8, connecting column; 9, laser cutting assembly; 10, through hole; 11, electric push rod; 12, sleeve; 13, observation window; 14, cabinet door; 15, operation port; 16, first spring; 501, fixed column; 502, threaded rod; 503, second spring; 504, connecting block; 505, sliding block; 506, third spring; 507, rotating shaft; 508, connecting plate; 509, pull rope; 510, cleaning roller; 601, sliding column; 602, extrusion column; 603, fourth spring; 604, fixed block; 605, first hinged plate; 606, movable block; 607, expansion plate; 608, groove; 609, second hinged plate; 610, first telescopic rod; 611, second telescopic rod; 612, limiting plate; 701, limiting ring; 702, torsion shaft; 703, limiting block; 704, limiting rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only used to distinguish entities or operations from each other, and do not require or imply any actual relationship, order or relative importance between the entities or operations.

[0021] Embodiment one, please refer to Figures 1-5The utility model relates to a kind of false tooth laser cutting equipment, including shell 1, processing frame 2 is fixedly connected inside shell 1, and the inside of processing frame 2 is opened with inner cavity 3, the inner wall of inner cavity 3 is slidably connected with sliding plate 4, the top of sliding plate 4 is provided with cutting erasing mechanism 5, the inside of inner cavity 3 is provided with cutting positioning mechanism 6, the bottom of sliding plate 4 is fixedly connected with connecting column 8, and laser cutting assembly 9 is fixedly installed in the inside of shell 1, the bottom of sliding plate 4 is fixedly connected with first spring 16, and the end, away from sliding plate 4 of first spring 16, is fixedly connected in the inner wall of inner cavity 3, the inner wall of shell 1 is fixedly installed with electric push rod 11, and the output shaft of electric push rod 11 is fixedly connected with sleeve 12, the outer wall of sliding column 601 corresponds with the inner wall of sleeve 12, the outer wall of shell 1 is fixedly installed with observation window 13, and cabinet door 14 is rotatably connected on the outer wall of shell 1, and the sidewall of cabinet door 14 is opened with operating port 15.

[0022] Further, cutting erasing mechanism 5 includes several cleaning rollers 510 arranged above sliding plate 4, and fixed column 501, and the inside of fixed column 501 is rotatably connected with threaded rod 502 by thread, the end, inside fixed column 501 of threaded rod 502, is fixedly connected with second spring 503, the outer wall of threaded rod 502, away from fixed column 501, is fixedly connected with several connecting blocks 504, and the inner wall of connecting block 504 is slidably connected with sliding block 505, the end, inside connecting block 504 of sliding block 505, is fixedly connected with third spring 506, the end, away from third spring 506 of sliding block 505, is fixedly connected with rotating shaft 507, and the outer wall of rotating shaft 507 is rotatably connected with connecting plate 508, connecting plate 508 is rotatably connected with connecting block 504 between the outer wall of connecting plate 508 and the outer wall of connecting block 504.

[0023] More specifically, before laser cutting of the denture, the denture needs to be positioned first, the bottom of the denture is provided with a connecting hole for subsequent installation and use, first, the inner wall of the connecting hole of the denture is cleaned to facilitate subsequent positioning and clamping work, the opening of the operating port 15 can facilitate the operator to carry out the denture operation work, by putting the hand through the operating port 15 into the inside of the shell 1, the inside of the shell 1 can be observed through the observation window 13, then the denture to be processed is pressed from the top to the bottom of the cutting and erasing mechanism 5, then the bottom of the denture will extrude the outer wall of the plurality of cleaning rollers 510, at this time the plurality of cleaning rollers 510 are in an inclined state, when the plurality of cleaning rollers 510 are extruded, they will gradually enter the connecting hole inside the bottom of the denture, since the diameter between the plurality of cleaning rollers 510 is greater than the diameter of the connecting hole of the denture, in this process, the plurality of cleaning rollers 510 will continue to shrink, then the extrusion force of the cleaning rollers 510 will be applied to the end of the connecting plate 508, then the connecting plate 508 will drive the sliding block 505 to slide along the inner wall of the connecting block 504 through the rotating shaft 507, at the same time the third spring 506 will be compressed, then the distance between the connecting block 504 and the connecting plate 508 will be shortened, so that the linear distance between the two ends of the pull rope 509 will also be shortened, in the process the plurality of cleaning rollers 510 will be synchronously shrunk and displaced.

[0024] In the process of compressing the third spring 506, at this time several cleaning rollers 510 will gradually enter the connecting hole of the denture, and then when fully entering the connecting hole, several cleaning rollers 510 and connecting plate 508 will rotate around the axis 507 as the axis, so that the outer wall of several cleaning rollers 510 can be attached to the inner wall of the connecting hole, and at the same time, the elastic force generated by the compression of the third spring 506 can make the cleaning roller 510 under the elastic force exert a pressing force on the inner wall of the connecting hole, thereby ensuring that the cleaning roller 510 is attached to the inner wall of the connecting hole, and then in the process of continuing to move down, the denture will drive the threaded rod 502 to move down synchronously through several cleaning rollers 510, because the threaded rod 502 and the fixed column 501 are connected by threaded rotation, so the threaded rod 502 will rotate while moving down along the inside of the fixed column 501, and at the same time, the second spring 503 will be compressed, then the threaded rod 502 will drive the corresponding cleaning roller 510 to rotate by several connecting blocks 504, which is attached to the inner wall of the connecting hole of the denture. In the process of casting cobalt-chromium alloy denture, the denture is wrapped in a high-temperature-resistant material called "investment", and then after casting is completed, the shell needs to be knocked out to take out the denture. At this time, the inside and edges of the deep hole and the fine hole of the denture are easy to leave tiny investment particles, and the design of the cleaning roller 510 pressurized by the third spring 506 can adapt to connecting holes of different size tolerances and slight shape deviations, and can scrape off the particles remaining on the inner wall, ensuring close attachment to the inner wall and effective cleaning, solving the problem of inaccurate positioning of the denture caused by residual particles in the connecting hole, and ensuring that there is no slipping and deviation during subsequent laser cutting after precise clamping of the denture, ensuring the quality of laser cutting processing.

[0025] After the threaded rod 502 slides along the inside of the fixed column 501, the cleaning work of the connecting hole of the denture has been completed, then the denture is pulled out of the outer wall of several cleaning rollers 510, and then the threaded rod 502 is no longer under downward pressure, and the elastic force of the second spring 503 will drive the threaded rod 502 to slide upward and reset, and at the same time, the cleaning roller 510 is no longer under downward pressure, then the elastic force of the compressed third spring 506 drives the sliding block 505 to slide and reset, making the distance between the connecting plate 508 and the connecting block 504 far away, and at the same time, the straight line distance between the two ends of the pull rope 509 will be far away, so as to be straightened, and at the same time, the pull rope 509 will pull the connecting plate 508 to rotate around the axis 507, and then several cleaning rollers 510 will displace with the connecting plate 508, so as to reset to the initial inclined state, and then the cutting and scraping mechanism 5 can perform the next cleaning work.

[0026] Embodiment two, please refer to Figures 1-8On the basis of embodiment one, in the embodiment, the cutting positioning mechanism 6 comprises the connecting column 8 as the shaft, and comprises the sliding column 601, and the inside of the sliding column 601 is slidably connected with the extrusion column 602, the top of the extrusion column 602 is fixedly connected with the fourth spring 603, the outer wall of the extrusion column 602 is fixedly connected with a plurality of fixed blocks 604, and the end of the fixed block 604 is rotatably connected with the first hinged plate 605, the inner wall of the sliding column 601 is fixed with another fixed block 604, and the end of the fixed block 604 is rotatably connected with another first hinged plate 605, the ends of the two first hinged plates 605 away from the fixed block 604 are commonly rotatably connected with the movable block 606, and the side wall of the movable block 606 is fixedly connected with the side wall of the expansion plate 607, the expansion plate 607 penetrates and is slidably connected in the inside of the sliding column 601, the outer wall of the sliding column 601 is provided with the recess 608, and the inner wall of the recess 608 is rotatably connected with the second hinged plate 609, the inner wall of the recess 608 is rotatably connected with the first telescopic rod 610, the end of the second hinged plate 609 is rotatably connected with the end of the first telescopic rod 610, the inside of the sliding column 601 is slidably connected with the second telescopic rod 611, and the bottom of the second telescopic rod 611 is fixedly connected with the limiting plate 612.

[0027] More specifically, after the connecting hole of the denture is cleaned, the pre-processing clamping positioning is needed. The connecting hole of the denture is aligned and clamped to the top of the sliding column 601, then the sliding column 601 is extruded to drive the sliding plate 4 to slide down along the inner wall of the inner cavity 3, and the first spring 16 is compressed at the same time. The outer wall of the second telescopic rod 611 and the inner wall of the sliding column 601 are relatively displaced, and then the sliding column 601 moves to the specified position, and the top of the second telescopic rod 611 contacts the bottom of the extrusion column 602. During the movement, the top of the second telescopic rod 611 extrudes the extrusion column 602 to slide up along the inner wall of the sliding column 601, and the fourth spring 603 is compressed. During the displacement of the extrusion column 602, the fixed blocks 604 are synchronously moved to shorten the distance between the corresponding fixed blocks 604, so as to extrude the movable block 606 through the corresponding first hinge plate 605. Then the movable block 606 drives the expansion plate 607 to move away from the sliding column 601, and the displacement of the expansion plate 607 realizes the outward diffusion. During this process, the outer wall of the expansion plate 607 contacts the inner wall of the denture connecting hole clamped at the end of the sliding column 601 and supports it. The supporting force increases the friction between the expansion plate 607 and the denture, realizing the positioning and clamping of the denture. The laser cutting assembly 9 can freely move from any angle and any direction to cut the surface of the denture, avoiding the blocking of the laser cutting path by the traditional clamp clamped on the surface of the denture, thereby realizing the laser cutting of all surfaces in one clamping work, saving the process of disassembling, adjusting and re-clamping the denture, and repositioning the cutting position of the laser cutting head, thereby improving the practicability and accuracy of the equipment for laser cutting of the denture.

[0028] Meanwhile, the bottom of the sliding column 601 penetrates the inside of the processing rack 2, then the second hinge plate 609 is no longer blocked, and the corresponding first telescopic rod 610 supports the end of the second hinge plate 609 to diffuse the end of the second hinge plate 609 outward. At this time, the clamping and positioning of the denture are completed, then the denture is loosened, the expanded end of the second hinge plate 609 is clamped at the bottom of the processing rack 2, and the upward moving force of the sliding column 601 is applied by the compression force of the fourth spring 603 to ensure that the expansion plate 607 always extrudes and supports the inner wall of the denture connecting hole.

[0029] After the positioning and clamping of the denture is completed, the laser cutting assembly 9 is then driven. Since the laser cutting assembly 9 comprises an adjusting component and a laser emitting assembly, the adjusting component is arranged on the shell 1, and the laser emitting assembly is connected with the movable end of the adjusting component. The adjusting component is a precise mechanical device such as a motor, a servo system or a hydraulic system and a three-coordinate high-precision moving platform. The three-coordinate high-precision moving platform can adjust the vertical position of the laser emitting assembly in space according to a preset program or an operator's instruction. The adjusting component drives the laser emitting assembly to move accurately in multiple directions, thereby realizing multi-angle and multi-position cutting of the denture material. The laser emitting assembly generates a high-power laser beam. An optical system guides the laser beam, and a focusing lens focuses the laser beam to a very small point to realize high-precision cutting. The high precision and power of the laser emitting assembly enable it to quickly and accurately cut the denture material.

[0030] Embodiment three, please refer to Figures 1-9 On the basis of embodiment two, in this embodiment, the bottom of the processing frame 2 is provided with a conversion mechanism 7.

[0031] Further, the conversion mechanism 7 comprises a limiting ring 701, and the bottom and top of the limiting ring 701 are symmetrically provided with inclined surfaces, and the two inclined surfaces are connected in a head-to-tail manner. A torsion shaft 702 is rotationally connected to the outer wall of the limiting ring 701 through a torsion spring, and the outer wall of the torsion shaft 702 is fixedly connected with a limiting block 703. The outer wall of the connecting column 8 is fixedly connected with two limiting rods 704, and the outer walls of the two limiting rods 704 correspond to the outer walls of the corresponding limiting blocks 703.

[0032] More specifically, in the pre-treatment of the denture, when the threaded rod 502 slides along the inside of the fixed column 501 is completed, the threaded rod 502 will drive the fixed column 501 to displace downward in the process, the fixed column 501 will drive the connecting column 8 to displace synchronously through the sliding plate 4, then the connecting column 8 will drive the limiting rod 704 to extrude the outer wall of the limiting block 703, so that the limiting block 703 rotates around the torsion shaft 702 as the axis, and the torsional spring on the torsion shaft 702 will be compressed, then when the limiting rod 704 passes the position of the limiting block 703, at this time the limiting block 703 will drive the limiting block 703 to reset rotation through the force released by the torsional spring, then after the denture is pulled out of the outer wall of the plurality of cleaning rollers 510 upward, the sliding plate 4 is reset to slide along the inner wall of the inner cavity 3 through the force of the compressed first spring 16, and the sliding plate 4 will drive the limiting rod 704 to move synchronously through the connecting column 8, then the limiting rod 704 will contact the outer wall of the limiting block 703, and then slide from the outer wall of the limiting block 703 to the inclined surface of the limiting ring 701, then when the limiting rod 704 slides along the inclined surface of the limiting ring 701, the sliding plate 4 will be driven to rotate half a circle on the inner wall of the inner cavity 3 through the connecting column 8, at this time the positions of the cutting and erasing mechanism 5 and the cutting positioning mechanism 6 are completed. The cutting positioning mechanism 6 is rotated in front of the operator.

[0033] After the laser cutting processing of the denture, since the electric push rod 11 and the laser cutting assembly 9 are electrically connected, the electric push rod 11 will receive a signal at the same time when driving the laser cutting assembly 9 to reset, then the electric push rod 11 is synchronously driven to make the sleeve 12 of the output shaft rise, then the inner wall of the sleeve 12 will be sleeved on the end surface of the sliding column 601 located below the machining rack 2, then the sleeve 12 will contact the outer wall of the plurality of second hinged plates 609 and extrude them, so that the plurality of second hinged plates 609 are shrunk to fit into the inner wall of the groove 608, at this time the sliding column 601 is no longer limited by the second hinged plate 609, then the sliding plate 4 is driven to rise through the elastic force of the first spring 16, in the process, the connecting column 8 is rotated half a circle again by the limiting rod 704, so that the cutting and erasing mechanism 5 or the cutting positioning mechanism 6 is rotated in position after each processing, which can ensure the correct operation of the equipment process and avoid the failure of the processing process.

[0034] The process of the present application is: Before processing the denture, it needs to be positioned. The bottom of the denture has a connection hole for subsequent installation. First, cleaning the denture of particulate matter helps with subsequent positioning and clamping. The opening of the operating port 15 facilitates denture processing. By passing a hand through the operating port 15 into the interior of the housing 1, the interior of the housing 1 can be observed through the observation window 13. Then, the denture to be processed is pressed downwards from above the cutting and erasing mechanism 5. The bottom of the denture then presses against the outer wall of several cleaning rollers 510. At this time, the cleaning rollers 510 are in an inclined state. When the dry cleaning roller 510 is squeezed, it gradually enters the connecting hole at the bottom of the denture. Since the diameter between several cleaning rollers 510 is larger than the diameter of the connecting hole of the denture, several cleaning rollers 510 will continue to shrink during this process. Then the squeezing force of the cleaning roller 510 will be applied to the end of the connecting plate 508. Then the connecting plate 508 will drive the sliding block 505 to slide along the inner wall of the connecting block 504 through the rotating shaft 507. At the same time, the third spring 506 will be compressed. Then the distance between the connecting block 504 and the connecting plate 508 will become shorter, and the straight distance between the two ends of the pull rope 509 will also become shorter. During the compression of the third spring 506, several cleaning rollers 510 gradually enter the connecting hole of the denture. Once fully inside, the cleaning rollers 510 and the connecting plate 508 rotate around the pivot 507, causing the outer walls of the cleaning rollers 510 to adhere to the inner wall of the connecting hole. Simultaneously, the elastic force generated by the compression of the third spring 506 causes the cleaning rollers 510 to exert a squeezing force on the inner wall of the connecting hole, ensuring their adherence. As the denture continues downward, the cleaning rollers 510 drive the threaded rod 502 to move downwards synchronously. Since the threaded rod 502 is connected to the fixed post 501 via a threaded connection, it rotates as it moves downwards along the interior of the fixed post 501. At the same time, the second spring 503 is compressed. Then, the threaded rod 502 will drive the corresponding cleaning roller 510 to rotate against the inner wall of the connecting hole of the denture through several connecting blocks 504. During the casting process of the cobalt-chromium alloy denture, the denture is wrapped with a high-temperature resistant material called "embedding material". After the casting is completed, this outer shell needs to be broken to remove the denture. At this time, tiny embedding material particles are very likely to remain inside and on the edges of the deep holes and fine holes of the denture. The cleaning roller 510, which is pressurized by the third spring 506, is designed to adapt to the connecting holes with different dimensional tolerances and slight shape deviations. It can scrape off the particles remaining on the inner wall, ensuring a tight fit and effective cleaning with the inner wall. This solves the problem of inaccurate denture positioning caused by residual particles in the connecting hole. At the same time, it ensures that after the denture is accurately clamped, there will be no slippage or displacement during the subsequent laser cutting process, ensuring the quality of the finished denture after laser cutting. After the denture connection holes are cleaned, align the denture connection holes and snap them into the top of the sliding post 601. The sliding post 601 is compressed, causing the sliding plate 4 to slide down along the inner wall of the inner cavity 3, compressing the first spring 16. At the same time, the outer wall of the second telescopic rod 611 is displaced relative to the inner wall of the sliding post 601. After the sliding post 601 moves to the designated position, the top of the second telescopic rod 611 contacts and presses the compression post 602, causing it to slide upward along the inner wall of the sliding post 601, and the fourth spring 603 is compressed. When the extrusion column 602 moves, it drives several fixed blocks 604 to move synchronously, shortening the distance between the upper and lower corresponding fixed blocks 604. The first hinge plate 605 extrudes the movable block 606, and the movable block 606 drives the expansion plate 607 to move away from the sliding column 601, achieving outward diffusion. The outer wall of the expansion plate 607 contacts and supports the inner wall of the denture connection hole. By increasing the friction between the expansion plate 607 and the denture, the denture is positioned and clamped. This avoids the situation where the traditional clamps clamp the denture surface and block the laser cutting path. At the same time, it eliminates the process of disassembling, adjusting and re-clamping the denture and repositioning the cutting position of the laser cutting head.

[0035] Then, the laser cutting component 9 is driven by a three-coordinate high-precision moving platform, which moves the laser emitting component precisely in multiple directions according to a preset program or operator's instructions. The laser emitting component generates a high-power laser beam, the optical system guides the laser beam, and the focusing lens focuses the laser beam onto a very small point on the denture surface to achieve fast, accurate, and high-precision cutting of the denture. This enables multi-angle and multi-position cutting of the denture material, allowing the laser cutting process of all surfaces of the denture to be completed in a single clamping operation.

[0036] It should be noted that all the devices in this application are common devices on the market, and can be selected according to the needs of specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can easily implement it. It belongs to the prior art and will not be described in detail.

[0037] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A laser cutting device for dentures, comprising a housing (1), characterized in that: The housing (1) is fixedly connected to a processing frame (2), and the processing frame (2) has an inner cavity (3). The inner wall of the inner cavity (3) is slidably connected to a sliding plate (4). The top of the sliding plate (4) is provided with a cutting and erasing mechanism (5). The inner cavity (3) is provided with a cutting and positioning mechanism (6). The bottom of the sliding plate (4) is fixedly connected to a connecting column (8). A laser cutting assembly (9) is fixedly installed inside the housing (1); The bottom of the sliding plate (4) is fixedly connected to a first spring (16), and the end of the first spring (16) away from the sliding plate (4) is fixedly connected to the inner wall of the inner cavity (3); The cutting and wiping mechanism (5) includes several cleaning rollers (510) positioned above the sliding plate (4). The cleaning rollers (510) rotate as they move down synchronously with the denture, thus cleaning the inside of the denture connection hole. The cutting and positioning mechanism (6) includes several expansion plates (607) arranged symmetrically on the cleaning roller (510) with the connecting column (8) as the axis. The precise positioning of the denture before laser cutting is completed by the synchronous diffusion of the expansion plates (607). The bottom of the processing rack (2) is provided with a switching mechanism (7) to automatically switch the workstations of the cutting and erasing mechanism (5) and the cutting and positioning mechanism (6).

2. The laser cutting device for dentures according to claim 1, characterized in that, The cutting and erasing mechanism (5) includes a fixed column (501), and a threaded rod (502) is rotatably connected to the inside of the fixed column (501) by a thread. A second spring (503) is fixedly connected to one end of the threaded rod (502) located inside the fixed column (501). A plurality of connecting blocks (504) are fixedly connected to the outer wall of the end of the threaded rod (502) away from the fixed column (501), and a sliding block (505) is slidably connected to the inner wall of the connecting block (504). A third spring (506) is fixedly connected to one end of the sliding block (505) located inside the connecting block (504). A rotating shaft (507) is fixedly connected to one end of the sliding block (505) away from the third spring (506). A connecting plate (508) is rotatably connected to the outer wall of the rotating shaft (507). A pull rope (509) is fixedly connected between the outer wall of the connecting plate (508) and the outer wall of the connecting block (504). The end of the cleaning roller (510) is rotatably connected to the side wall of the connecting plate (508).

3. The laser cutting equipment for dentures according to claim 2, characterized in that, The bottom of the fixed column (501) is fixedly connected to the top of the sliding plate (4), and the end of the second spring (503) away from the threaded rod (502) is fixedly connected to the inner wall of the fixed column (501).

4. The laser cutting equipment for dentures according to claim 3, characterized in that, The cutting positioning mechanism (6) includes a sliding column (601), and a pressing column (602) is slidably connected inside the sliding column (601). A fourth spring (603) is fixedly connected to the top of the pressing column (602). Several fixing blocks (604) are fixedly connected to the outer wall of the pressing column (602), and a first hinge plate (605) is rotatably connected to the end of the fixing block (604). Another fixing block (604) is fixed to the inner wall of the sliding column (601), and another first hinge plate (605) is rotatably connected to the end of the fixing block (604). The ends of the two first hinge plates (605) away from the fixing blocks (604) are rotatably connected to a movable block (606). The sidewall of the movable block (606) is fixedly connected to the sidewall of the extension plate (607). The extension plate (607) is slidably connected through the interior of the sliding column (601). The outer wall of the sliding column (601) is provided with a groove (608), and the inner wall of the groove (608) is rotatably connected to a second hinge plate (609). The inner wall of the groove (608) is rotatably connected to a first telescopic rod (610). The end of the second hinge plate (609) is rotatably connected to the end of the first telescopic rod (610). The interior of the sliding column (601) is slidably connected to a second telescopic rod (611), and the bottom of the second telescopic rod (611) is fixedly connected to a limit plate (612).

5. The laser cutting device for dentures according to claim 4, characterized in that, The outer wall of the sliding column (601) is fixedly connected to the inside of the sliding plate (4). The inner wall of the inner cavity (3) is provided with a through hole (10). The outer wall of the sliding column (601) is slidably connected to the inner wall of the through hole (10). The bottom of the extrusion column (602) corresponds to the top of the second telescopic rod (611). The fourth spring (603) is fixedly connected to the inner wall of the sliding column (601) from one end of the extrusion column (602). The outer wall of the limiting plate (612) is slidably connected to the inside of the sliding column (601). The bottom of the limiting plate (612) is slidably connected to the top of the processing frame (2).

6. The laser cutting equipment for dentures according to claim 5, characterized in that, The conversion mechanism (7) includes a limiting ring (701), and the bottom and top of the limiting ring (701) are symmetrically provided with ramps, and the two ramps are connected end to end. The outer wall of the limiting ring (701) is rotatably connected to a torsion shaft (702) through a torsion spring, and the outer wall of the torsion shaft (702) is fixedly connected to a limiting block (703). The outer wall of the connecting column (8) is fixedly connected to two limiting rods (704), and the outer walls of the two limiting rods (704) correspond to the outer walls of the corresponding limiting blocks (703).

7. A laser cutting device for dentures according to claim 6, characterized in that, An electric push rod (11) is fixedly installed on the inner wall of the housing (1), and the output shaft of the electric push rod (11) is fixedly connected to a sleeve (12). The outer wall of the sliding column (601) corresponds to the inner wall of the sleeve (12).

8. A laser cutting device for dentures according to claim 7, characterized in that, An observation window (13) is fixedly installed on the outer wall of the housing (1), and a cabinet door (14) is rotatably connected to the outer wall of the housing (1), and an operation port (15) is opened through the side wall of the cabinet door (14).

9. The cutting method of a laser cutting device for dentures according to claim 8, characterized in that, Includes the following steps: S1: Pre-cleaning: The operator's hand passes through the operating port (15) into the housing (1), presses the denture down from above the cutting and wiping mechanism (5), squeezes the inclined cleaning roller (510) to shrink it, drives the sliding block (505) to slide, the cleaning roller (510) enters the connecting hole and rotates to fit the inner wall, the denture continues to move down and drives the threaded rod (502) to rotate and move down, the cleaning roller (510) rotates to scrape off the particles in the connecting hole; S2: Forced conversion: Drive the electric push rod (11), the sleeve (12) of its output shaft is raised, contacts and squeezes several second hinge plates (609), causing them to shrink and fit against the inner wall of the groove (608), releasing the limit of the sliding column (601), and then the first spring (16) drives the sliding plate (4) to rise. During this period, the limit rod (704) drives the connecting column (8) to rotate half a turn again. At this time, the cutting positioning mechanism (6) is displaced and positioned in front of the operator at the work station to be processed. S3: Positioning and Cutting: Align the denture connection hole with the top of the sliding post (601). The sliding post (601) is squeezed and drives the sliding plate (4) to slide down along the inner wall of the inner cavity (3), so that the second telescopic rod (611) is relatively displaced with the inner wall of the sliding post (601). The pressing post (602) drives the fixed block (604) to move. Then the first hinge plate (605) squeezes the movable block (606), so that the expansion plate (607) spreads outward, contacts and supports the inner wall of the denture connection hole, and positions and clamps the denture. Then the laser emitting assembly (9) moves through the adjustment component to laser cut the denture material.

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