CN113977942B

CN113977942B - Base plate replacing device suitable for false tooth efficient printing

Info

Publication number: CN113977942B
Application number: CN202111263728.XA
Authority: CN
Inventors: 李景全; 油伦扩; 潘晨; 李雨禅; 张松; 卓楷文
Original assignee: Zhejiang Tongqing Technology Co ltd
Current assignee: Zhejiang Tongqing Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-08-02
Anticipated expiration: 2041-10-26
Also published as: CN113977942A

Abstract

The invention provides a base plate replacing device suitable for efficient false tooth printing and a base plate thereof, and relates to the field of 3D printing, comprising a base, a moving platform, a lifting mechanism and a resin box, wherein the lifting mechanism is arranged in an upright post, the moving platform is arranged on the lifting mechanism, the upper part of the base is provided with an installation block, the resin box is in sliding fit with the installation block, the base plate is arranged on the moving platform, the installation block is internally provided with a positioning mechanism, the moving platform is internally provided with a leveling mechanism, the leveling mechanism comprises a rotating platform, fine setting subassembly, ball and hemisphere cover, the top adaptation of ball is provided with a plurality of ball between hemisphere cover and the ball in the hemisphere cover, forms universal ball, and it has phase change material to fill between the ball, and the bottom of ball links to each other with the rotation platform, and base plate detachable installs on the rotation platform, and rotation platform upper portion is provided with the cavity, and the fine setting subassembly links to each other with the cavity. The invention changes the traditional mechanical leveling method, so that the leveling efficiency is higher and more accurate.

Description

Base plate replacing device suitable for efficient false tooth printing

Technical Field

The invention relates to the technical field of 3D printing, in particular to a substrate replacing device suitable for efficient false tooth printing.

Background

With the continuous development of science and technology, the denture processing mode of human beings is changed from the traditional milling process to a 3D printing process, and the problems of complex processing, processing time and the like in the traditional milling process are solved. The 3D printing process can greatly improve the quality of finished products, and simultaneously reduces the manufacturing time while ensuring the quality. However, the 3D printing also has a corresponding problem, and the biggest problem is to replace the substrate after the printing is completed, because there is a certain deviation between the substrates during the substrate processing, the substrate needs to be adjusted again each time the substrate is replaced for printing. In particular, in printing using a photosensitive resin, the leveling of the substrate is more important, and if the substrate is not leveled, the molded resin may not adhere to the substrate, resulting in printing failure, and also resulting in a large deviation in the size of the printed product. In the prior art, a gear, a screw rod and the like are often adopted for leveling a substrate for certain mechanical transmission, and the leveling method has relatively high first cost and relatively complex second installation.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a substrate replacing device suitable for efficient false tooth printing, and solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a device is changed to base plate suitable for artificial tooth high efficiency is printed, includes base, moving platform, elevating system and resin box, be provided with vertical stand on the base, be provided with elevating system in the stand, moving platform installs on elevating system, base upper portion is provided with two installation pieces along base width direction, resin box slip adaptation is between two installation pieces, base plate detachable installs on moving platform, its characterized in that: the improved substrate fixing device is characterized in that a positioning mechanism is arranged in the mounting block and comprises four positioning rods, four hinged rods, a connecting rod, a screw rod II and a motor, the four positioning rods are vertically matched in the two mounting blocks in a sliding mode and correspond to four corners of a substrate, a groove is formed in the upper portion of each positioning rod, one end of each hinged rod is hinged in the groove, the connecting rod is connected with the bottoms of the four positioning rods, the screw rod II is vertically pivoted in the base, the output end of the motor is connected with one end of the screw rod II, the connecting rod is connected to the screw rod II in a threaded mode, pressure sensors are arranged on the upper portions of the hinged rods, a controller is arranged in the base and connected with the pressure sensors, the positioning mechanism is used for detecting pressure of each corner of the substrate, a leveling mechanism is arranged in the moving platform and comprises a rotating platform, The device comprises a fine adjustment component, a round ball and a semi-ball sleeve, wherein the semi-ball sleeve is connected with a moving platform, the top of the round ball is matched in the semi-ball sleeve, a plurality of balls are arranged between the semi-ball sleeve and the round ball to form a universal ball, phase-change materials are filled between the balls, the bottom of the round ball is connected with a rotating platform, a base plate is detachably arranged on the rotating platform, a cavity is arranged at the upper part of the rotating platform, the fine adjustment component is connected with the cavity and used for leveling the base plate, the fine adjustment component comprises a water supply pipe, a water supply pump, a water suction pipe, a water suction pump, four electromagnetic valves and a water tank, an annular partition plate is arranged in the cavity and divides the cavity into an inner cavity and an outer cavity, four partition plates are arranged on the outer cavity along the circumferential direction and divide the outer cavity into four water storage cavities corresponding to the four corners of the base plate, and one end of the four electromagnetic valves are communicated with each other water storage cavity, the other end links to each other with the flow pipe, the water tank is established in moving platform, the one end of water pump links to each other with the water tank, and the other end links to each other with the one end that the solenoid valve was kept away from to the flow pipe, the one end of suction pump links to each other with the water tank, and the other end links to each other with the one end of drinking-water pipe, and the other end of drinking-water pipe sets up the inner chamber, be provided with the subassembly that drains in the division board for make each water storage intracavity rivers flow into the inner chamber, controller and solenoid valve link to each other.

Preferably, the substrate replacing device suitable for efficient printing of a denture is characterized in that: the water discharging assembly comprises four baffles, four water outlets are formed in the bottom of the partition board and are located in four water storage cavities, four sliding grooves are formed in the rotating platform and extend into the partition board and correspond to the water outlets respectively, the baffles are matched in the sliding grooves in a sliding mode respectively, and a second spring is arranged between the top of each baffle and the partition board.

Preferably, the water storage cavities are all provided with slopes which incline towards the inner cavity.

Preferably, the substrate replacing device suitable for efficient printing of a denture is characterized in that: the bottom of the rotating platform is provided with a plurality of clamping grooves along the circumferential direction, arc slide ways II are arranged in the clamping grooves, electromagnets are arranged in the arc slide ways II, a plurality of clamping blocks are arranged at the top of the base plate along the circumferential direction, the clamping blocks correspond to the clamping grooves, arc slide ways I are arranged in the clamping blocks, the arc slide ways I correspond to the arc slide ways I, arc-shaped clamping columns are matched in the arc slide ways I in a sliding mode, and the clamping columns are connected with the clamping blocks through springs I.

Preferably, the heating plates and the refrigerating plates are arranged outside the hemispherical sleeve in a staggered mode along the circumferential direction.

Preferably, the phase change material is gallium alloy with a melting point of 30 ℃.

(III) advantageous effects

The invention provides a substrate replacing device suitable for efficient false tooth printing. The method has the following beneficial effects:

1. this device is changed to base plate suitable for high-efficient printing of artificial tooth installs base plate detachable at the rotation platform, supports positioning mechanism in the base plate bottom at the level of adjusting to through the fine setting subassembly, make the rotation platform take place to rotate, make the base plate be in a horizontality, after accomplishing the level (l) ing, solidify the phase change material, thereby play a fixed action. Compared with the traditional leveling mode, the original mechanical mode is changed, the original transmission mode is reduced, the leveling mechanism is convenient to mount and reduce cost, and the leveling accuracy is higher.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the bottom of the present invention;

FIG. 3 is a schematic view of the interior of the fixture block according to the present invention;

fig. 4 is a schematic diagram of an internal structure of a mobile platform according to an embodiment of the present invention;

FIG. 5 is a schematic view of the inner structure of the semispherical sleeve according to the invention;

FIG. 6 is a schematic diagram of an internal structure of a mobile platform according to a second embodiment of the present invention;

FIG. 7 is a schematic diagram of an internal structure of a rotation platform according to a second embodiment of the present invention;

FIG. 8 is a schematic view of an internal structure of a partition plate according to a second embodiment of the present invention;

FIG. 9 is a diagram illustrating a state after the substrate is removed according to a second embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

FIG. 11 is a state diagram of the present invention during leveling;

FIG. 12 is a partial enlarged view of FIG. 11 at B; .

In the figure: 1. a base; 2. a column; 3. a resin cartridge; 4. mounting blocks; 5. a mobile platform; 6. a first lead screw; 7. a stepping motor; 8. a substrate; 81. a clamping block; 82. a first arc slideway; 83. clamping the column; 84. a first spring; 9. a positioning mechanism; 91. a motor; 92. a second screw rod; 93. a connecting rod; 94. positioning a rod; 95. a hinged lever; 96. a pressure sensor; 10. a leveling mechanism; 100. a semispherical sleeve; 101. a ball; 102. a ball bearing; 103. a phase change material; 104. a heating plate; 105. a refrigeration plate; 106. a water delivery pipe; 107. a water delivery tank; 108. a cylinder; 109. a cavity; 1091. an inner cavity; 1092. a water storage cavity; 110. a water tank; 111. a water pump; 112. a water supply pipe; 113. a water pump; 114. a water pumping pipe; 115. an electromagnetic valve; 116. a partition plate; 117. a partition plate; 118. a water outlet; 119. a baffle plate; 120. a second spring; 13. rotating the platform; 131. a card slot; 132. a second arc slideway; 133. an electromagnet.

Detailed Description

The embodiment of the invention provides a substrate replacing device suitable for efficient false tooth printing, which comprises a base 1, a moving platform 5, a lifting mechanism and a resin box 3, wherein a vertical upright post 2 is arranged at the upper part of the base 1, the lifting mechanism is arranged in the upright post 2, the moving platform 5 is arranged on the lifting mechanism and moves up and down along with the lifting mechanism, the lifting mechanism comprises a screw rod 6 and a stepping motor 7, the screw rod 6 is vertically pivoted in the upright post 2, the stepping motor 7 is arranged on the upright post 2, and the output end of the stepping motor 7 is connected with one end of the screw rod 6, so that the screw rod 6 can be driven to rotate when the output end of the stepping motor 7 rotates. Meanwhile, the moving platform 5 is in threaded connection with the first lead screw 6, so that when the first lead screw 6 is driven by the stepping motor 7 to rotate, the moving platform 5 moves up and down on the first lead screw 6 through the first lead screw 6. Simultaneously be provided with two installation pieces 4 along 1 width direction of base on base 1 upper portion to resin cartridge 3 sliding fit is between two installation pieces 4, thereby can take resin cartridge 3 into and take out from two installation pieces 4, conveniently changes the solution in resin cartridge 3 and the resin cartridge 3. Install base plate 8 detachable on moving platform 5 to base plate 8 and resin box 3 correspond each other, make base plate 8 can follow moving platform 5 up-and-down motion, make base plate 8 get into in the resin box 3, and carry out special illumination, with fashioned resin bonding on base plate 8, thereby constantly pile up the bonding and form a complete shape. The above are all the prior art.

The positioning mechanism 9 is disposed in the mounting block 4, and the pressure at each corner of the substrate 8 is detected by the positioning mechanism 9, so as to determine whether the substrate 8 is in a horizontal state according to the different pressures at each corner of the substrate 8. As shown in fig. 4 and 5, a leveling mechanism 10 is disposed in the moving platform 5, the leveling mechanism 10 includes a rotating platform 13, a fine adjustment assembly, a spherical ball 101 and a hemispherical sleeve 100, wherein the hemispherical sleeve 100 is connected to the moving platform 5, so that the hemispherical sleeve 100 is fixed, the top of the spherical ball 101 is fitted in the hemispherical sleeve 100, and a plurality of balls 102 are filled between the hemispherical sleeve 100 and the spherical ball 101, so that the hemispherical sleeve 100 and the spherical ball 101 form a universal ball structure, and the bottom of the spherical ball 101 can rotate in all directions. The bottom of the ball 101 is connected with the rotating platform 13, and the substrate 8 is detachably mounted on the rotating platform 13, so that the ball 101 can drive the substrate 8 on the rotating platform 13 to rotate in each direction, and the substrate 8 is ensured to be in a horizontal state. In order to level the substrate 8 and fix it, the phase change material 103 is filled between the balls 102, and the ball 101 is in a movable state and a fixed state by making the phase change material 103 in a different state. The cavity 109 is formed in the upper portion of the rotating platform 13, the fine tuning assembly is connected with the cavity 109, and the rotating platform 13 is adjusted through the fine tuning assembly, so that the substrate 8 on the rotating platform 13 is in a horizontal state, and the round ball 101 is fixed through the phase change material 103 when the substrate 8 is in the horizontal state, and therefore leveling and fixing of the substrate 8 can be completed. Meanwhile, a controller is arranged in the base 1 and connected with each component, so that the motion of each component is controlled.

In the embodiment, the phase change material 103 is a gallium alloy with a melting point of 30 degrees celsius, and the gallium alloy is in a liquid state when the temperature of the hemispherical cover 100 is higher than 30 degrees celsius by using the characteristic of low melting point of the gallium alloy, so that the spherical ball 101 can rotate in the hemispherical cover 100. When the temperature of the hemisphere cover 100 is lower than 30 ℃, the gallium alloy is in a solid state and fixes the ball 102 and the sphere 101, so that the sphere 101 cannot rotate. In order to heat and cool the hemispherical cover 100, the heating plates 104 and the cooling plates 105 are arranged outside the hemispherical cover 100 in a staggered manner in the circumferential direction, and the heating plates 104 and the cooling plates 105 are connected to the controller, so that the hemispherical cover 100 is cooled and heated by the cooling plates 105 and the heating plates, and the gallium alloy in the hemispherical cover 100 is in a liquid state and a solid state.

As shown in fig. 2 and 11, the positioning mechanism 9 includes four positioning rods 94, four hinge rods 95, a connecting rod 93, a second screw 92 and a motor 91, the four positioning rods 94 are respectively vertically slidably fitted in the two mounting blocks 4 and correspond to four corners of the base plate 8, and a groove is provided at an upper portion of each positioning rod 94, and the groove can be used for accommodating the positioning rod 94. One end of the hinge rod 95 is hinged in the groove, so that the hinge rod 95 can be upwards turned for 90 degrees and is perpendicular to the positioning rod 94, and meanwhile, when the hinge rod 95 is downwards developed, the hinge rod can be turned into the groove, and the positioning rod 94 can conveniently lift on the mounting block 4. The bottoms of the four positioning rods 94 are connected through the connecting rod 93, the second lead screw 92 is vertically pivoted in the base 1, and meanwhile, the output end of the motor 91 is connected with one end of the second lead screw 92, so that the second lead screw 92 is driven to rotate through the rotation of the output end of the motor 91. The connecting rod 93 is connected to the second lead screw 92 in a threaded mode, so that the connecting rod 93 moves up and down on the second lead screw 92 through rotation of the second lead screw, and the positioning rod 94 is driven to slide up and down on the mounting block 4.

As shown in fig. 12, when the hinge rod 95 is turned by 90 degrees and is perpendicular to the positioning rod 94, one end of the hinge rod 95 away from the positioning rod 94 abuts against four corners of the bottom of the base plate 8, and in order to detect that the pressure of each corner of the base plate 8 on the hinge rod 95 is different, and to drive whether the bottom of the base plate 8 is in a horizontal state, a pressure sensor 96 is arranged at one end of the upper portion of the hinge rod 95 away from the positioning rod 94, and when the positioning adjustment is performed, the bottom of the base plate 8 contacts with the pressure sensor 96, so that the pressure at each corner is determined by the pressure sensor 96, and the pressure sensor 96 is connected with a controller, and the measured pressure is analyzed.

In the present device, the fine adjustment assembly is carried out in two embodiments, each having its own advantages and disadvantages, and therefore these two embodiments are described in detail below.

The first embodiment is as follows: as shown in fig. 4 and 5, the fine adjustment assembly includes a water pipe 106, a water tank 107 and a cylinder 108, one end of the water pipe 106 is connected to the cavity 109, the other end is connected to the water tank 107, a piston slidably connected to the water tank 107 is disposed in the water tank 107, the water tank 107 forms a needle structure, and the cavity 109 forms a sealed space between the water pipe 106 and the water tank 107. Meanwhile, the air cylinder 108 is arranged in the moving platform 5, the output end of the air cylinder 108 is connected with the piston, water is filled between the water delivery tank 107 and the piston of the water delivery tank 107, and meanwhile, the plurality of pressure sensors 96 are connected with the controller and the air cylinder 108.

When leveling the substrate 8 is performed, the bottom of the substrate 8 abuts against the four pressure sensors 96, and when the pressure values of the four pressure sensors 96 are different, that is, the substrate 8 is not in a horizontal state. The controller sends a signal to cause the cylinder 108 to push the piston so that water in the delivery tank 107 enters the cavity 109 and fills the cavity 109. Because water is in a rotatable object and is finally in a horizontal state, by utilizing the property, after the cavity 109 is filled with water, the rotating platform 13 can rotate to a certain degree through the round ball 101, so that the pressure communication between the substrate 8 on the rotating platform 13 and the four pressure sensors 96 is realized, and the round ball 101 is fixed through the phase-change material 103, namely, the leveling and fixing of the substrate 8 are completed. When printing is completed, the air cylinder 108 moves the piston backward, and water in the cavity 109 is again drawn into the drain tank 107. However, this embodiment only provides a certain positional deviation for the rotary platform 13, not for the bottom of the base plate 8.

Example two: as shown in fig. 6 and 7, the fine adjustment assembly includes a water supply pipe 112, a water supply pump 111, a water suction pipe 114, a water suction pump 113, four solenoid valves 115, and a water tank 110, and a ring-shaped partition plate 117 is disposed in the cavity 109 to divide the cavity into an inner cavity 1091 and an outer cavity. Simultaneously be provided with four baffles 116 along the circumferencial direction on the exocoel, divided into four water storage chamber 1092 with the exocoel, four water storage chamber 1095 are corresponding with four angles with base plate 8 respectively simultaneously, consequently only need adjust the weight in four water storage chamber 1091, can adjust the pivoted angle of rotation platform 13. The water content in the four water storage cavities 1092 is controlled by the four electromagnetic valves 115, one end of each of the four electromagnetic valves 115 is communicated with the corresponding water storage cavity 1092, the other end of each of the four electromagnetic valves 115 is connected with the corresponding water supply pipe 112, the water tank 110 is arranged in the movable platform 5, one end of the water supply pump 111 is connected with the water tank 110, and the other end of each of the water supply pipes 112 is connected with one end, far away from the corresponding electromagnetic valve 115, of the corresponding water supply pipe 112, so that the water in the water tank 110 is conveyed to the corresponding water supply pipe 112 through the corresponding water supply pump 111, and the water in the corresponding water supply pipe 112 can enter the corresponding water storage cavity 1092 only by adjusting and controlling the switches of the four electromagnetic valves 115.

Meanwhile, the pressure sensors 96 are connected with the controller and the electromagnetic valve 115, when the base plate 8 is leveled, the pressure values measured by the pressure sensors 96 are different, signals are sent to the controller, the controller sends the signals to the electromagnetic valve 115 on the water storage cavity 1092 on the side with the small pressure value, the electromagnetic valve 115 is opened, water in the water feeding pipe 112 enters the water storage cavity 1092, the rotating platform 13 on the side is pressed downwards, the base plate 8 on the side is deflected accordingly, then the water content in each water storage cavity 1092 is detected and adjusted continuously, and finally the base plate 8 is in a horizontal state.

Because each water storage cavity 1092 is filled with a certain amount of water, the water in the water storage cavity 1092 needs to be pumped out when the water storage cavity 1092 is used next time, so that the water storage cavity 1092 is ready for leveling next time. Thus, one end of the suction pump 113 is connected to the water tank 110, and the other end is connected to one end of the suction pipe 114, and the other end of the suction pipe 114 is disposed in the inner chamber 1091. A water discharging assembly is provided in the partition plate 117, and the water discharging assembly is used to allow water in each water storage chamber 1092 to flow into the inner chamber 1091 after printing is completed. In order to facilitate the water in the water storage chamber 1092 to flow into the inner chamber 1091, a slope inclined toward the inner chamber 1091 is provided in each water storage chamber 1092, so as to facilitate the water in the water storage chamber 1092 to flow into the inner chamber 1091.

The water discharging assembly in the second embodiment comprises four baffles 119, four water outlets 118 are arranged at the bottom of the partition plate 117, and the four water outlets 118 respectively correspond to the water storage cavity 1092. Meanwhile, four sliding grooves are formed in the rotating platform 13, extend into the partition plate 117, and respectively correspond to the four water outlets 118. The four baffle plates 119 are respectively slidably fitted in the four sliding grooves, meanwhile, a second spring 120 is arranged between the top of the baffle plate 119 and the partition plate 117, and the baffle plates 119 move out of the rotating platform 13 by the elastic force of the second spring 120, as shown in fig. 9. When the substrate 8 is not mounted on the rotating platform 13, the baffle 119 is ejected from the rotating platform 13, and the water outlet 118 is opened, so that the water in the water storage gun cavity flows into the inner cavity 1091. When the substrate 8 is loaded into the rotating platform 13, the baffle 119 is lifted upwards, so that the baffle 119 moves upwards to close the water outlet 118, and the water storage cavity is closed. The second embodiment can realize the adjustment of each angle of the substrate 8, and further meets the requirement of adjustment.

The fine adjustment assembly is described in detail in the first and second embodiments, and in order to facilitate the rotation of the rotary platform 13, the water pipe 106, the water pipe 112, and the water pumping pipe 114 in the first and second embodiments are all flexible pipes, which facilitate the rotation of the rotary platform 13.

For the installation of the substrate 8, the traditional fixing by bolts is abandoned, and the bolt fixing is complex and wastes time. A plurality of clamping grooves 131 are arranged at the bottom of the rotating platform 13 along the circumferential direction, a second arc slideway 132 is arranged in each clamping groove 131, an electromagnet 133 is arranged in each second arc slideway 132, and the electromagnet 133 is connected with a controller. A plurality of latches 81 are provided at the top of the base plate 8 along the circumferential direction, and the latches 81 correspond to the catching grooves 131 so that the latches 81 can be caught in the catching grooves 131. In order to further fix the substrate 8 on the rotating platform 13, a first arc slideway 82 is arranged in the fixture block 81, the first arc slideway 82 corresponds to a second arc slideway 132, an arc clamping column 83 is slidably matched in the first arc slideway 82, the clamping column 83 is connected with the fixture block 81 through a first spring 84, and the clamping column 83 is retracted into the first arc slideway 82 through the elastic force of the first spring 84. After the latch 81 is latched into the latch slot 131, the controller sends a signal to make the electromagnet 133 suck the latch 83 into the arc slideway two 132 from the arc slideway one 82, so as to fix the substrate 8 on the rotating platform 13 through the latch 83. When printing is completed, the electromagnet 133 is deactivated, and the first spring 84 causes the first clamping column 83 to retract into the first circular arc slideway 82, so that the user can conveniently remove the substrate 8 from the rotating platform 13.

The working principle is as follows: when the base plate 8 replacing device suitable for efficient false tooth printing and the base plate 8 of the device are used, each corner of the bottom of the base plate 8 is in contact with the pressure sensor 96 on the hinge rod 95 in leveling, so that the pressure difference of the bottom plate of the base plate 8 is measured, and the rotating platform 13 is adjusted through the fine adjustment assembly. Because the top of the rotating platform 13 is connected with the ball 101, and the hemispherical sleeve 100 is sleeved outside the ball 101, the ball 101 and the hemispherical sleeve 100 form a universal ball structure, so that the rotating platform 13 can rotate in any direction, and when the fine adjustment assembly adjusts the rotating platform 13, the rotating platform 13 can rotate in any direction, and the adjustment of the substrate 8 is facilitated. After the adjustment is completed, the temperature of the hemispherical shell 100 is changed to change the phase change material 103 from liquid to solid, thereby fixing the balls 102 and the sphere 101, fixing the whole rotating platform 13, namely fixing the leveled substrate 8, and performing a 3D printing. The device changes the traditional mode of leveling by adopting machinery, facilitates the adjustment of users and reduces the manufacturing cost.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device is changed to base plate suitable for artificial tooth high efficiency is printed, includes base (1), moving platform (5), elevating system and resin box (3), be provided with vertical stand (2) on base (1), be provided with elevating system in stand (2), moving platform (5) are installed on elevating system, base (1) upper portion is provided with two installation pieces (4) along base (1) width direction, resin box (3) slip adaptation is between two installation pieces (4), base plate (8) detachable installs on moving platform (5), its characterized in that: the mounting block (4) is internally provided with a positioning mechanism (9), the positioning mechanism (9) comprises four positioning rods (94), four hinged rods (95), a connecting rod (93), a lead screw II (92) and a motor (91), the four positioning rods (94) are respectively vertically matched in the two mounting blocks (4) in a sliding manner and correspond to four corners of the base plate (8), the upper parts of the positioning rods (94) are provided with grooves, one end of each hinged rod (95) is hinged in each groove, the connecting rod (93) is connected with the bottoms of the four positioning rods (94), the lead screw II (92) is vertically pivoted in the base (1), the output end of the motor (91) is connected with one end of the lead screw II (92), the connecting rod (93) is in threaded connection with the lead screw II (92), the upper parts of the hinged rods (95) are respectively provided with a pressure sensor (96), and the base (1) is internally provided with a controller, the controller is connected with a plurality of pressure sensors (96), the positioning mechanism (9) is used for detecting the pressure of each corner of the base plate (8), a leveling mechanism (10) is arranged in the moving platform (5), the leveling mechanism (10) comprises a rotating platform (13), a fine-tuning assembly, a round ball (101) and a semi-ball sleeve (100), the semi-ball sleeve (100) is connected with the moving platform (5), the top of the round ball (101) is matched in the semi-ball sleeve (100), a plurality of balls (102) are arranged between the semi-ball sleeve (100) and the round ball (101) to form a universal ball, phase-change materials (103) are filled between the balls (102), the bottom of the round ball (101) is connected with the rotating platform (13), the base plate (8) is detachably mounted on the rotating platform (13), a cavity (109) is arranged on the upper portion of the rotating platform (13), the fine adjustment component is connected with the cavity (109) and used for leveling the substrate (8), the fine adjustment component comprises a water feeding pipe (112), a water feeding pump (111), a water pumping pipe (114), a water pumping pump (113), four electromagnetic valves (115) and a water tank (110), an annular partition plate (117) is arranged in the cavity (109) and divides the cavity into an inner cavity (1091) and an outer cavity, four partition plates (116) are arranged on the outer cavity along the circumferential direction and divide the outer cavity into four water storage cavities (1092), the water storage cavities (1092) correspond to four corners of the substrate (8), the four electromagnetic valves (115) are communicated with one water storage cavity (1092) at one end, the other end of each electromagnetic valve is connected with the water feeding pipe (112), the water tank (110) is arranged in the moving platform (5), one end of the water feeding pump (111) is connected with the water tank (110), and the other end of each electromagnetic valve (115) is connected with one end of the water feeding pipe (112), one end of the water suction pump (113) is connected with the water tank (110), the other end of the water suction pump is connected with one end of the water suction pipe (114), the other end of the water suction pipe (114) is arranged in the inner cavity (1091), a water discharge assembly is arranged in the partition plate (117) and used for enabling water in each water storage cavity (1092) to flow into the inner cavity (1091), and the controller is connected with the electromagnetic valve (115).

2. The apparatus for exchanging a substrate for efficient printing of a denture as claimed in claim 1, wherein: the water discharging assembly comprises four baffles (119), four water outlets (118) are formed in the bottom of the partition plate (117), the four water outlets (118) are located in four water storage cavities (1092), four sliding grooves are formed in the rotating platform (13), the four sliding grooves extend into the partition plate (117) and correspond to the water outlets (118) respectively, the baffles (119) are matched in the sliding grooves in a sliding mode respectively, and a second spring (120) is arranged between the top of the baffles (119) and the partition plate (117).

3. The apparatus for exchanging a substrate for efficient printing of a denture as claimed in claim 1, wherein: slopes inclined towards the inner cavity (1091) are arranged in the water storage cavity (1092).

4. The apparatus for exchanging a substrate for efficient printing of a denture as claimed in claim 1, wherein: the bottom of rotating platform (13) is provided with a plurality of draw-in groove (131) along the circumferencial direction, all be provided with circular arc slide two (132) in draw-in groove (131), be provided with electro-magnet (133) in circular arc slide two (132), base plate (8) top is provided with a plurality of fixture block (81) along the circumferencial direction, fixture block (81) are corresponding with draw-in groove (131), be provided with circular arc slide one (82) in fixture block (81), circular arc slide one (82) and circular arc slide two (132) correspond each other, slide fit in circular arc slide one (82) has arc card post (83), link to each other through spring one (84) between card post (83) and the fixture block (81).

5. The apparatus for exchanging a substrate for efficient printing of a denture as claimed in claim 1, wherein: the heating plates (104) and the refrigerating plates (105) are arranged outside the hemispherical sleeve (100) in a staggered mode along the circumferential direction.

6. The apparatus for exchanging a substrate for efficient printing of a denture as claimed in claim 1, wherein: the phase change material (103) is a gallium alloy with a melting point of 30 ℃.