Powder transfer equipment for denture raw material production and denture raw material feeding method

Abstract

The invention discloses powder transferring equipment for false tooth raw material production and a false tooth raw material feeding method. The powder transferring equipment comprises a mechanical arm, a guiding assembly and a material sweeping assembly. The mechanical arm is detachably provided with a container and can move between the weighing equipment and the pressing equipment so as to pour false tooth raw materials in the container into a forming groove of the pressing equipment; the guide assembly is arranged on the circumferential side of a groove opening of the forming groove and provided with a plurality of guide plates capable of moving between the horizontal position and the inclined position. The material sweeping assembly comprises a material sweeping block capable of moving on the surface of the forming groove. The container containing the false tooth raw materials is taken out from the weighing equipment through the mechanical arm, then the powdery false tooth raw materials in the container are poured into the forming groove through the mechanical arm, and the multiple guide plates are located at the inclined positions in the period to play a role in guiding the false tooth raw materials; powder on the edge of the notch is swept into the forming groove through the sweeping block; therefore, the stability and the weighing precision can be improved by utilizing a natural pouring and guiding form and cooperating with the material sweeping assembly.

Description

Technical Field

[0001] The invention relates to the field of transport transfer device structures, and in particular to a powder transfer device for denture raw material production and a denture raw material feeding method. Background Art

[0002] With the development of automation technology, many products have achieved industrial transformation from manual to semi-automatic or fully automatic. Take zirconia dentures as an example. It involves multiple processes such as powder preparation, powder pressing, pre-sintering, CNC machining, high-temperature sintering, and surface treatment. Traditional manual production is time-consuming and labor-intensive. Therefore, the automated production line of zirconia dentures has gradually become the mainstream. For the automated production line of zirconia dentures, it is equipped with raw material preparation devices, pressing devices, sintering devices, CNC machining devices, and surface treatment devices corresponding to the above-mentioned multiple processes. The transfer of workpieces between each device needs to be achieved through a robot or a transport line.

[0003] In order to ensure the processing accuracy of zirconia dentures, in the powder pressing and molding process, ensuring that the weight of the base block (zirconia block) obtained each time is within the preset range is a prerequisite for the normal implementation of subsequent processes; in short, how to transfer a certain amount of powder from the raw material preparation device to the pressing and molding device with high precision is a technical issue that the automated production line should focus on.

[0004] Referring to the powder transfer device in the prior art, a spiral feeding mechanism is generally used. This structure uses a motor to drive a spiral blade to move the powder between two devices. However, due to the fine particles and high density of zirconium oxide powder, the fluidity in the spiral feeding mechanism is poor, it is easy to get clogged, and the stability is poor. At the same time, when the spiral feeding mechanism discharges the powder, under the thrust of the blade, the fine powder is easy to "raise dust" during discharge, resulting in reduced powder weighing accuracy. It can be seen that the current powder transfer device has the defects of poor stability and insufficient accuracy when applied to the transfer of denture raw materials such as zirconium oxide powder. Summary of the invention

[0005] The purpose of the present invention is to provide a powder transfer device for the production of denture raw materials and a denture raw material feeding method, so as to solve the technical problems of poor stability and insufficient precision of the powder transfer device in the prior art when applied to denture raw materials.

[0006] To achieve this object, the present invention adopts the following technical solutions: A powder transfer device for producing denture raw materials, comprising: A mechanical arm, wherein the mechanical arm is detachably mounted with a container and can move between the weighing device and the pressing device to pour the denture raw material in the container into the molding groove of the pressing device; A guide assembly, the guide assembly is arranged at the periphery of the notch of the forming groove, and is provided with a plurality of guide plates that can move between a horizontal position and an inclined position; the guide plates located at the horizontal position are flush with the notch edge of the forming groove, and the guide plates located at the inclined position are inclined relative to the notch of the forming groove; A sweeping assembly, the sweeping assembly comprising a sweeping block movable on the surface of the forming groove; When the denture raw material is poured into the molding groove, the multiple guide plates are located at the inclined position; after the denture raw material is poured into the molding groove, at least one guide plate is located at the horizontal position so that the sweeping block can sweep the powder into the molding groove.

[0007] Optionally, an avoidance groove is provided at the edge of the groove of the forming groove corresponding to the position of the guide plate; The guide plate is slidably connected to a side plate along its width direction; when the guide plate is located in the horizontal position, the side plate does not exceed the guide plate along the width direction and is overlapped between the guide plate and the bottom wall of the avoidance groove; when the guide plate is located in the inclined position, the side plate at least partially exceeds the guide plate along the width direction.

[0008] Optionally, the two ends of the guide plate along the width direction thereof are each slidably connected to a side plate, and the guide plate is also rotatably connected to a first gear between the two side plates; The two side plates are both extended with rack parts, the rack part of one side plate is meshed with one end of the first gear, and the rack part of the other side plate is meshed with the other end of the first gear.

[0009] Optionally, the guide assembly includes a first winding wheel coaxially arranged with the first gear, a second winding wheel installed in the avoidance groove, and a connecting line, one end of the connecting line is fixedly connected to the first winding wheel, and the other end of the connecting line is fixedly connected to the second winding wheel; The guide assembly also includes a reset shaft, a reset elastic member and a driving unit. The reset shaft passes through the first winding wheel and the first gear in sequence and is rotatably connected to the guide plate. One end of the reset elastic member is fixedly connected to the guide plate, and the other end of the reset elastic member is fixedly connected to the reset shaft, so that the reset shaft has a tendency to cause the side plate to unfold from the guide plate; the driving unit is used to drive the second winding wheel to rotate.

[0010] Optionally, the driving unit includes a driving motor and a second gear and a third gear which are arranged in the avoidance groove and mesh with each other; the second gear is coaxial with the second winding wheel and fixedly connected; the driving motor is installed below the avoidance groove and is drivingly connected to the third gear.

[0011] Optionally, the third gear is embedded with a first magnetic block and a second magnetic block distributed around the axis of the third gear, and the first magnetic block and the second magnetic block have opposite polarities; the guide plate is provided with a third magnetic block and a fourth magnetic block corresponding to the first magnetic block and the second magnetic block respectively; A cylinder unit is also installed in the avoidance groove, one end of the cylinder unit is rotatably connected to the groove bottom wall of the avoidance groove, and the other end of the cylinder unit is rotatably connected to the guide plate.

[0012] Optionally, the guide plate is provided with first guide blocks facing each other, and first guide grooves are formed on the two first guide blocks facing each other, and the rack portion is correspondingly slidably connected to the first guide grooves; The two side plates are both extended with guide rods, and the guide plates are also convexly provided with second guide blocks arranged opposite to each other. Second guide grooves are formed on the opposite sides of the two second guide blocks, and the guide rods are correspondingly slidably connected to the second guide grooves.

[0013] Optionally, the sweeping assembly includes a moving part and a rotating part, the rotating part is installed on the moving end of the moving part, and the sweeping block is installed on the rotating end of the rotating part.

[0014] Optionally, a first lifting unit and a second lifting unit are installed on the rotating end, and the sweeping block includes a first sweeping part installed on the first lifting unit and a second sweeping part installed on the second lifting unit; The projection of the first sweeping surface of the first sweeping part onto the pressing device is in a straight line, the projection of the second sweeping surface of the second sweeping part onto the pressing device is in an arc shape, and the first sweeping surface and the second sweeping surface enclose each other to form a closed figure.

[0015] A denture raw material feeding method, applied to the above-mentioned denture raw material production powder transfer device, comprises: Weighing a predetermined weight of denture raw material and transferring it to the top of the forming tank; After each guide plate is in an inclined position, the denture raw material is poured into the forming groove; Each guide plate is sequentially made to sweep the material, and the process of the guide plate sweeping the material includes: making the sweeping guide plate be in a horizontal position, making other guide plates be in an inclined position, and sweeping the denture raw material in the area where the sweeping guide plate is located into the forming groove; Make each guide plate in a horizontal position and clean the denture raw material into the forming groove according to a predetermined trajectory.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The powder transfer device and denture raw material feeding method for denture raw material production provided by the present invention, when placing the denture raw material into the molding groove, firstly take out the container containing the denture raw material from the weighing device through the mechanical arm, and then pour the powdered denture raw material in the container into the molding groove through the mechanical arm, during which multiple guide plates are located in an inclined position, which play a guiding role for the denture raw material, effectively guide the denture raw material into the molding groove, and reduce splashing; after the pouring is completed, the powder at the edge of the groove is swept into the molding groove by the sweeping block, and the guide plate on the corresponding path enters the horizontal position accordingly; thus, the natural dumping and guiding form can be used to prevent the denture raw material from being blocked to ensure stability, and at the same time cooperate with the sweeping component to increase the transfer ratio of the denture raw material from the container to the molding groove, so as to achieve improved weighing accuracy. Therefore, the powder transfer device and denture raw material feeding method for denture raw material production have the advantages of high stability and high weighing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0019] Figure 1 A schematic diagram of the overall structure of a powder transfer device for producing denture raw materials provided by an embodiment of the present invention; Figure 2 A schematic diagram of a top view of a powder transfer device for producing denture raw materials provided by an embodiment of the present invention; Figure 3 A schematic diagram of the first state structure of a powder transfer device for producing denture raw materials provided by an embodiment of the present invention; Figure 4 A schematic diagram of the second state structure of the powder transfer device for producing denture raw materials provided by an embodiment of the present invention; Figure 5 for Figure 3 A schematic diagram of the local enlarged structure at point A; Figure 6Schematic diagram of the overall structure of the sweeping assembly in an embodiment of the present invention; Figure 7 It is a schematic diagram of the top view of the material sweeping assembly in an embodiment of the present invention.

[0020] Illustration description: 100, robotic arm; 200, weighing equipment; 300, pressing equipment; 301, forming tank; 302, avoidance tank; 400, guide assembly; 401, horizontal position; 402, inclined position; 410, guide plate; 411, first guide block; 412, second guide block; 413, first guide groove; 414, second guide groove; 420, side plate; 421, rack portion; 422, guide rod; 430, first gear; 440, first winding wheel; 450, second winding wheel; 461, second gear; 462, third gear; 471, first magnetic block; 472, second magnetic block; 480, cylinder unit; 500, sweeping assembly; 510, sweeping block; 511, first sweeping part; 512, second sweeping part; 513, first sweeping surface; 514, second sweeping surface; 520, moving part; 521, first linear module; 522, second linear module; 530, rotating part. DETAILED DESCRIPTION

[0021] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0023] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0024] Embodiment 1: The present embodiment provides a powder transfer device, which is suitable for scenarios where powdered raw materials are transferred. It is designed to transfer raw materials with high stability and high precision, and is particularly suitable for denture production and processing. It can prevent zirconia powder (denture raw material) from being blocked during the transfer process, while also ensuring the transfer accuracy of zirconia powder (denture raw material). At the same time, the above-mentioned structure occupies less additional space and has the advantage of a compact structure.

[0025] In this embodiment, if Figures 1 to 5 As shown, a powder transfer device for producing denture raw materials is introduced, taking zirconium oxide powder as the object of transportation and transfer.

[0026] like Figures 1 to 5 As shown, the powder transfer equipment for denture raw material production in this embodiment includes a robot arm 100, a guide assembly 400 and a sweeping assembly 500; the robot arm 100 is detachably equipped with a container (not shown), and can move between the weighing device 200 and the pressing device 300 to pour the denture raw material in the container into the molding groove 301 of the pressing device 300; wherein, the robot arm 100 is a five-axis robot, a six-axis robot or the like structure, and its specific structure is known to those skilled in the art, and is not specifically expanded in this embodiment, and it is sufficient to transfer the container from the weighing device 200 to the pressing device 300; the container is an open cup-shaped part, and can also be an open bowl-shaped part, and the specific shape is not limited, and it can be used to hold the denture raw material (zirconia powder). The weighing device 200 is a material distribution sensor equipped with a weight sensor, which has an installation position for placing a container. After the container is placed in the installation position, the weight sensor can be used to achieve accurate weighing. Then the weighing device 200 also has a silo and a vibration distribution structure. The vibration distribution structure uses the vibration principle to accurately drop the denture raw materials into the container, thereby achieving accurate weighing of the denture raw materials in the container. It can be understood that the weighing device 200 can also use other structures such as pneumatic distribution to accurately place the denture raw materials into the container. The pressing device 300 is a compression device equipped with a cylinder or a liquid cylinder. It has a pressure head driven by a cylinder or a liquid cylinder. After the denture raw materials in the container are poured into the molding groove 301, the pressure head is driven to descend, and the powdered denture raw materials can be pressed to form a block-shaped denture base block (zirconia block), which is convenient for subsequent sintering, CNC processing, surface treatment and other processes.

[0027] Next, the guide assembly 400 and the sweeping assembly 500 of the powder transfer device for producing denture raw materials in this embodiment are introduced: The guide assembly 400 is disposed on the peripheral side of the groove opening of the forming groove 301 and is provided with a plurality of guide plates 410 that can move between a horizontal position 401 and an inclined position 402; Figure 3 As shown, the guide plate 410 at the horizontal position 401 is flush with the edge of the groove 301. Figure 2 As shown, the guide plate 410 located at the inclined position 402 is inclined relative to the notch of the forming groove 301; it can be understood that the guide plate 410 located at the inclined position 402 is inclined relative to the notch of the forming groove 301, and at this time, the higher end of the guide plate 410 is inclined in a direction away from the notch of the forming groove 301. On the one hand, it can reduce the risk of powder spilling when the denture material is poured into the forming groove 301. On the other hand, even if part of the denture material is poured onto the guide plate 410, the guide plate 410 can also guide this part of the denture material into the forming groove 301.

[0028] The sweeping assembly 500 includes a sweeping block 510 that can move on the surface of the molding groove 301; when the denture raw material is poured into the molding groove 301, the plurality of guide plates 410 are all located at the inclined position 402; after the denture raw material is poured into the molding groove 301, at least one guide plate 410 is located at the horizontal position 401, so that the sweeping block 510 can sweep the powder into the molding groove 301. It can be understood that after the container completely pours out the denture raw material, the guide plate 410 is located at the horizontal position 401, at which time the guide plate 410 is flush with the edge of the groove of the molding groove 301, and the whole is in a smooth plane shape. At this time, the denture raw material on the plane can be swept into the molding groove 301 by the sweeping block 510, so as to improve the transfer ratio of the denture raw material, as close to 1:1 as possible, thereby improving the accuracy of the denture base block (zirconia block) and the utilization rate of the denture raw material.

[0029] In summary, when the denture raw material production powder transfer device in this embodiment puts the denture raw material into the molding groove 301, the robot arm 100 first takes out the container containing the denture raw material from the weighing device 200, and then the robot arm 100 pours the powdered denture raw material in the container into the molding groove 301. During this period, multiple guide plates 410 are located in an inclined position, which play a guiding role for the denture raw material, effectively guide the denture raw material into the molding groove 301, and reduce splashing; after the pouring is completed, the powder at the edge of the groove is swept into the molding groove 301 by the sweeping block 510, and the guide plate 410 on the corresponding path enters the horizontal position 401 accordingly; thus, the natural dumping and guiding form can be used to prevent the denture raw material from being blocked in the closed device to ensure stability, and at the same time cooperate with the sweeping component 500 to increase the transfer ratio of the denture raw material from the container to the molding groove 301, so as to improve the weighing accuracy. Therefore, the powder transfer device for denture raw material production has the advantages of high stability and high weighing accuracy.

[0030] Furthermore, an avoidance groove 302 is provided at the edge of the groove opening of the forming groove 301, and the avoidance groove 302 is for the guide plate 410 in the horizontal position to be placed, so that the guide plate 410 is flush with the groove opening edge of the forming groove 301; the guide plate 410 is slidably connected with the side plate 420 along its width direction; when the guide plate 410 is in the horizontal position 401, the side plate 420 does not exceed the guide plate 410 in the width direction and is stacked between the guide plate 410 and the groove bottom wall of the avoidance groove 302; when the guide plate 410 is in the inclined position 402, the side plate 420 at least partially exceeds the guide plate 410 in the width direction. It can be understood that the addition of the slidable side plate 420 on the guide plate 410 makes the guide assembly 400 more flexible, which is reflected in that the avoidance groove 302 that needs to be opened is smaller, but it can provide a larger guiding area, thereby improving the powder guiding effect and achieving optimal use of space.

[0031] Furthermore, the two ends of the guide plate 410 along the width direction thereof are slidably connected with a side plate 420, and the guide plate 410 is also rotatably connected with a first gear 430 between the two side plates 420; the two side plates 420 are both extended with a rack portion 421, the rack portion 421 of one side plate 420 is meshed with one end of the first gear 430, and the rack portion 421 of the other side plate 420 is meshed with the other end of the first gear 430. It can be understood that by introducing the first gear 430 and the two rack portions 421, the synchronous movement of the two side plates 420 can be achieved, ensuring that the side plates 420 on both sides always maintain the same height and position, further improving the guiding performance of the denture raw material, and at the same time, only one side plate 420 or the first gear 430 needs to be controlled to adjust the positions of the two side plates 420 at the same time, thereby improving controllability.

[0032] Furthermore, the guide assembly 400 includes a first winding wheel 440 coaxially arranged with the first gear 430, a second winding wheel 450 installed in the avoidance groove 302 and a connecting line, one end of the connecting line is fixedly connected to the first winding wheel 440, and the other end of the connecting line is fixedly connected to the second winding wheel 450; the guide assembly 400 also includes a reset shaft, a reset elastic member and a driving unit, the reset shaft passes through the first winding wheel 440 and the first gear 430 in sequence and is rotatably connected to the guide plate 410, one end of the reset elastic member is fixedly connected to the guide plate 410, and the other end of the reset elastic member is fixedly connected to the reset shaft, so that the reset shaft has a tendency to cause the side plate 420 to unfold from the guide plate 410; the driving unit is used to drive the second winding wheel 450 to rotate.

[0033] As a specific implementation, the connecting wire can be made of nylon rope, steel wire composite rope or other elastic wire; the reset elastic member can be made of coil spring or torsion spring; the driving part can be made of a motor with a transmission structure. It can be understood that the above implementation is a technical solution that does not require the staff to manually open and close the side panel 420, and its development principle is: When the driving unit does not drive the second winding wheel 450 to rotate to recover the connecting line, the main body of the connecting line should be wound around the first winding wheel 440, and the other parts of the connecting line extend to the second winding wheel 450 and are not wound around the second winding wheel 450. At this time, the reset elastic member is not stretched, and it is defined that the reset elastic member and the first gear 430 are both in an initial state. In this initial state, the side plate 420 is at least partially located on the outside of the guide plate 410, that is, the guide plate 410 is in an inclined position 402 and is in a fully expanded state.

[0034] When the side plate 420 needs to be retracted to the guide plate 410, the retraction principle is as follows: The second winding wheel 450 is driven to rotate by the driving unit to recycle the connecting wire. At this time, the main body of the connecting wire is recycled and wound on the second winding wheel 450 through the rotation of the second winding wheel 450, and the other parts of the connecting wire extend to the first winding wheel 440. In the process of releasing the connecting wire from the first winding wheel 440, under the action of friction, the first winding wheel 440 is driven to rotate, so that it overcomes the elastic force of the reset elastic member and rotates, thereby driving the first gear 430 to rotate through the connection of the reset shaft. After the rotation, the first gear 430 is in a terminal state, in which the side plate 420 completely overlaps with the guide plate 410, that is, it is in a fully retracted state. On the contrary, when the driving unit drives the second winding wheel 450 to rotate in the reverse direction, the connecting wire will be released to drive the first winding wheel 440 to reset, so as to realize the state change of the side plate 420 from the fully retracted state to the fully extended state.

[0035] It should be pointed out that, through the above arrangement, the movement of the guide plate 410 can be controlled from the avoidance groove 302 without directly contacting the guide assembly 400, which improves the convenience and safety of operation and makes the above structure more compact.

[0036] Furthermore, the driving unit includes a driving motor and a second gear 461 and a third gear 462 disposed in the avoidance groove 302 and meshing with each other; the second gear 461 is coaxial with and fixedly connected to the second winding wheel 450; the driving motor is installed below the avoidance groove 302 and is drivingly connected to the third gear 462. The travel ratio between the driving motor and the first winding wheel 440 can be adjusted by the transmission ratio between the second gear 461 and the third gear 462.

[0037] On the basis of the above-mentioned implementation mode, the third gear 462 is embedded with a first magnetic block 471 and a second magnetic block 472 distributed around the axis of the third gear 462, and the first magnetic block 471 and the second magnetic block 472 have opposite polarities; the guide plate 410 is respectively provided with a third magnetic block and a fourth magnetic block with opposite polarities corresponding to the first magnetic block 471 and the second magnetic block 472, that is, the third magnetic block is magnetically attracted to the first magnetic block 471, the fourth magnetic block is magnetically attracted to the second magnetic block 472, the third magnetic block is magnetically repelled from the second magnetic block 472, and the fourth magnetic block is magnetically repelled from the first magnetic block 471; a cylinder unit 480 is also installed in the avoidance groove 302, one end of the cylinder unit 480 is rotatably connected to the bottom wall of the avoidance groove 302, and the other end of the cylinder unit 480 is rotatably connected to the guide plate 410. By arranging the magnetic blocks, when the guide plate 410 is located at the horizontal position 401 , the third magnetic block and the first magnetic block 471 are arranged opposite to each other and are magnetically attracted to each other, and the fourth magnetic block and the second magnetic block 472 are arranged opposite to each other and are magnetically attracted to each other.

[0038] To facilitate understanding by those skilled in the art, the movement process of the guide plate 410 between the horizontal position 401 and the inclined position 402 is explained as follows: In the process of moving from the inclined position 402 to the horizontal position 401: first, the third gear 462 is driven by the driving motor to rotate counterclockwise, and the second winding wheel 450 is driven to rotate by meshing with the second gear 461. The second winding wheel 450 begins to store the connecting line, pulling the first winding wheel 440 to rotate. The first winding wheel 440 drives the first gear 430 to rotate, overcomes the elastic force of the reset elastic member (such as a torsion spring), and the side panels 420 on both sides are synchronously retracted through the meshing of the rack portion 421 and the first gear 430, thereby realizing the recovery of the side panels 420; Next, the third gear 462 is driven by the driving motor to rotate counterclockwise. Since the side plate 420 has been completely stored, the first gear 430 cannot continue to rotate. At this time, the third gear 462 continues to rotate counterclockwise, and the guide plate 410 moves downward through the tension of the connecting line, overcoming the elastic force of the cylinder unit 480, so that the cylinder unit 480 contracts, so that the guide plate 410 gradually approaches the horizontal position 401. In the last half circle when the driving motor drives the third gear 462 to rotate counterclockwise, the third magnetic block is arranged opposite to the first magnetic block 471, and the fourth magnetic block is arranged opposite to the second magnetic block 472. Under the action of the magnetic attraction force and the pulling force provided by the driving motor, the cylinder unit 480 is overcome and the guide plate 410 is locked in the avoidance groove 302. The process from the horizontal position 401 to the inclined position 402: first, the third gear 462 is driven by the driving motor to rotate half a circle clockwise, so that the third magnetic block and the second magnetic block 472 are arranged opposite to each other and magnetically repel each other, and the fourth magnetic block and the first magnetic block 471 are arranged opposite to each other and magnetically repel each other. Due to the opposite polarities, a magnetic repulsion force is generated to assist the cylinder unit 480 to push the guide plate 410 upward and start to move toward the inclined position 402, thereby completing the unlocking; Then, under the action of the cylinder unit 480, the guide plate 410 gradually rises to the inclined position 402; at the same time, the third gear 462 continues to rotate, the connecting line is released, and under the action of the reset elastic member (such as a torsion spring), the first winding wheel 440 starts to rotate in the opposite direction, and through the engagement with the rack part 421, the side plates 420 on both sides are synchronously unfolded.

[0039] Finally, after the side panels 420 are fully deployed, the guide panel 410 is fixed in the inclined position 402, and the entire system returns to the initial state, ready for the next operation.

[0040] The above design cleverly combines mechanical transmission, magnetic force and pneumatic control to achieve precise positioning of the guide plate 410 and synchronous opening and closing of the side plate 420, thereby improving the accuracy and efficiency of denture material transfer while occupying a small space overall.

[0041] Based on the above implementation, Figures 3 to 5 As shown, the guide plate 410 is provided with first guide blocks 411 disposed opposite to each other, and a first guide groove 413 is formed on the opposite side of the two first guide blocks 411, and the rack portion 421 is correspondingly slidably connected to the first guide groove 413; both side plates 420 are extended with guide rods 422, and the guide plate 410 is also provided with second guide blocks 412 disposed opposite to each other, and a second guide groove 414 is formed on the opposite side of the two second guide blocks 412, and the guide rod 422 is correspondingly slidably connected to the second guide groove 414.

[0042] On the basis of the above-mentioned embodiment, the sweeping assembly 500 includes a moving part 520 and a rotating part 530, the rotating part 530 is mounted on the moving end of the moving part 520, and the sweeping block 510 is mounted on the rotating end of the rotating part 530. The moving part 520 includes at least a first linear module 521 and a second linear module 522 to realize the free movement of the rotating part 530 on the plane, and the rotating part 530 can realize the free rotation of the sweeping block 510 by a rotating motor in conjunction with a transmission structure, and the transmission structure includes but is not limited to gear transmission, synchronous wheel transmission, etc.

[0043] Based on the above implementation, Figure 6 and Figure 7As shown, a first lifting unit and a second lifting unit (both cylinders in this embodiment) are installed on the rotating end, and the sweeping block 510 includes a first sweeping portion 511 installed on the first lifting unit and a second sweeping portion 512 installed on the second lifting unit; the projection of the first sweeping surface 513 of the first sweeping portion 511 falling on the pressing device 300 is in a straight line, and the projection of the second sweeping surface 514 of the second sweeping portion 512 falling on the pressing device 300 is in an arc shape, and the first sweeping surface 513 and the second sweeping surface 514 are enclosed to form a closed figure. Through the above arrangement, the function of mechanical interlocking can be realized, and the cleaning effect can be improved at the same time.

[0044] Embodiment 2: This embodiment also provides a denture raw material feeding method, which is applied to the denture raw material production powder transfer device of the second embodiment, comprising: S1, weighing a predetermined weight of the denture raw material and transferring it to the top of the molding groove 301; S2, after each guide plate 410 is located at the inclined position 402, the denture raw material is poured into the forming groove 301; S3, each guide plate 410 is made to sweep materials in turn, and the process of the guide plate 410 sweeping materials includes: making the sweeping guide plate 410 located at the horizontal position 401, making other guide plates 410 located at the inclined position 402, and sweeping the denture raw materials in the area where the sweeping guide plate 410 is located into the forming groove 301; S4. Place each guide plate 410 in a horizontal position and clean the denture raw material into the forming groove 301 according to a predetermined trajectory, wherein the predetermined trajectory is a cleaning path planned in advance, and the powder on the edge of the groove of the forming groove 301 can be swept into the forming groove 301, and the specific path is not limited.

[0045] In the above-mentioned denture raw material feeding method, first, in step S3, the area where a certain guide plate 410 is located is preliminarily cleaned in turn. At this time, the arc-shaped second sweeping portion 512 can be used to collect and sweep the denture raw materials, and the remaining guide plates 410 located at the inclined position 402 act as baffles; for example, when the area where the first guide plate 410 is located is cleaned, the second to fourth guide plates 410 are moved into the inclined position 402, and when the area where the second guide plate 410 is located is cleaned, the first, third and fourth guide plates 410 are moved into the inclined position 402. 10 enters the inclined position 402, and so on; then, in step S4, each guide plate 410 is placed in a horizontal position, and then the final cleaning is performed through the linear first sweeping portion 511. Obviously, the arc-shaped sweeping portion is used for zone cleaning first to sweep most of the denture materials into the forming groove 301, and finally the linear sweeping portion is used for whole-zone cleaning to sweep the remaining denture materials into the forming groove 301, which helps to improve the cleaning efficiency and the transfer accuracy of the denture materials, that is, to improve the transfer ratio of the denture materials to be as close to 1:1 as possible.

[0046] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A powder transfer device for denture raw material production, characterized in that: include: A mechanical arm (100), the mechanical arm (100) being detachably mounted with a container, and being movable between a weighing device (200) and a pressing device (300) so as to pour the denture raw material in the container into a molding groove (301) of the pressing device (300); a guide assembly (400), the guide assembly (400) being arranged on the periphery of the notch of the forming groove (301), and being provided with a plurality of guide plates (410) movable between a horizontal position (401) and an inclined position (402); the guide plates (410) located at the horizontal position (401) are flush with the notch edge of the forming groove (301), and the guide plates (410) located at the inclined position (402) are arranged obliquely relative to the notch of the forming groove (301); A material sweeping assembly (500), the material sweeping assembly (500) comprising a material sweeping block (510) movable on the surface of the forming groove (301); When the denture raw material is poured into the molding groove (301), the plurality of guide plates (410) are all located at the inclined position (402); and after the denture raw material is poured into the molding groove (301), at least one guide plate (410) is located at the horizontal position (401) so that the sweeping block (510) can sweep the powder into the molding groove (301).

2. A powder transfer device for denture raw material production according to claim 1, characterized in that: An avoidance groove (302) is provided at a position of the groove edge of the forming groove (301) corresponding to the guide plate (410); The guide plate (410) is slidably connected to a side plate (420) along its width direction; when the guide plate (410) is located at the horizontal position (401), the side plate (420) does not exceed the guide plate (410) along the width direction and is overlapped between the guide plate (410) and the bottom wall of the avoidance groove (302); when the guide plate (410) is located at the inclined position (402), the side plate (420) at least partially exceeds the guide plate (410) along the width direction.

3. The powder transfer device for producing denture raw materials according to claim 2, characterized in that: The two ends of the guide plate (410) along the width direction thereof are each slidably connected to a side plate (420), and a first gear (430) is also rotatably connected to the guide plate (410) between the two side plates (420); The two side plates (420) are both extended with a rack portion (421); the rack portion (421) of one side plate (420) meshes with one end of the first gear (430), and the rack portion (421) of the other side plate (420) meshes with the other end of the first gear (430).

4. The powder transfer device for denture raw material production according to claim 3, characterized in that: The guide assembly (400) comprises a first winding wheel (440) coaxially arranged with the first gear (430), a second winding wheel (450) installed in the avoidance groove (302), and a connecting line, one end of the connecting line is fixedly connected to the first winding wheel (440), and the other end of the connecting line is fixedly connected to the second winding wheel (450); The guide assembly (400) further comprises a reset shaft, a reset elastic member and a driving unit. The reset shaft passes through the first winding wheel (440) and the first gear (430) in sequence and is rotatably connected to the guide plate (410). One end of the reset elastic member is fixedly connected to the guide plate (410), and the other end of the reset elastic member is fixedly connected to the reset shaft, so that the reset shaft has a tendency to cause the side plate (420) to unfold from the guide plate (410). The driving unit is used to drive the second winding wheel (450) to rotate.

5. The powder transfer device for denture raw material production according to claim 4, characterized in that: The driving unit comprises a driving motor and a second gear (461) and a third gear (462) which are arranged in the avoidance groove (302) and mesh with each other; the second gear (461) is coaxial with and fixedly connected to the second winding wheel (450); the driving motor is installed below the avoidance groove (302) and is drivingly connected to the third gear (462).

6. The powder transfer device for denture raw material production according to claim 5, characterized in that: The third gear (462) is embedded with a first magnetic block (471) and a second magnetic block (472) distributed around the axis of the third gear (462), and the first magnetic block (471) and the second magnetic block (472) have opposite polarities; the guide plate (410) is respectively provided with a third magnetic block and a fourth magnetic block with opposite polarities corresponding to the first magnetic block (471) and the second magnetic block (472); A cylinder unit (480) is also installed in the avoidance groove (302), one end of the cylinder unit (480) is rotatably connected to the groove bottom wall of the avoidance groove (302), and the other end of the cylinder unit (480) is rotatably connected to the guide plate (410).

7. The powder transfer device for denture raw material production according to claim 3, characterized in that: The guide plate (410) is provided with first guide blocks (411) facing each other, and first guide grooves (413) are formed on the two first guide blocks (411) facing each other, and the rack portion (421) is correspondingly slidably connected to the first guide grooves (413); The two side plates (420) are each provided with a guide rod (422) extending therefrom, the guide plate (410) is also provided with a second guide block (412) disposed opposite to each other, a second guide groove (414) is formed on the opposite side of the two second guide blocks (412), and the guide rod (422) is correspondingly slidably connected to the second guide groove (414).

8. The powder transfer device for denture raw material production according to claim 1, characterized in that: The material sweeping assembly (500) comprises a moving part (520) and a rotating part (530), wherein the rotating part (530) is mounted on the moving end of the moving part (520), and the material sweeping block (510) is mounted on the rotating end of the rotating part (530).

9. The powder transfer device for producing denture raw materials according to claim 8, characterized in that: A first lifting unit and a second lifting unit are installed on the rotating end, and the sweeping block (510) comprises a first sweeping portion (511) installed on the first lifting unit and a second sweeping portion (512) installed on the second lifting unit; The projection of the first sweeping surface (513) of the first sweeping portion (511) onto the pressing device (300) is in the shape of a straight line, the projection of the second sweeping surface (514) of the second sweeping portion (512) onto the pressing device (300) is in the shape of an arc, and the first sweeping surface (513) and the second sweeping surface (514) enclose a closed figure.

10. A method for feeding raw materials of dentures, characterized in that: The powder transfer device for producing denture raw materials according to any one of claims 1 to 9 comprises: Weighing a predetermined weight of denture raw material and transferring it to the top of the forming tank; After each guide plate is in an inclined position, the denture raw material is poured into the forming groove; Each guide plate is sequentially made to sweep the material, and the process of the guide plate sweeping the material includes: making the sweeping guide plate be in a horizontal position, making other guide plates be in an inclined position, and sweeping the denture raw material in the area where the sweeping guide plate is located into the forming groove; Make each guide plate in a horizontal position and clean the denture raw material into the forming groove according to a predetermined trajectory.

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