CN111486708A - Porcelain oven with good vacuum effect for dentistry - Google Patents

Porcelain oven with good vacuum effect for dentistry Download PDF

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Publication number
CN111486708A
CN111486708A CN202010294464.3A CN202010294464A CN111486708A CN 111486708 A CN111486708 A CN 111486708A CN 202010294464 A CN202010294464 A CN 202010294464A CN 111486708 A CN111486708 A CN 111486708A
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CN
China
Prior art keywords
protective cover
vacuum
workbench
porcelain
dentistry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010294464.3A
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Chinese (zh)
Inventor
广小芳
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Individual
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Individual
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Publication date
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Priority to CN202010294464.3A priority Critical patent/CN111486708A/en
Publication of CN111486708A publication Critical patent/CN111486708A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/02—Furnaces of a kind not covered by any preceding group specially designed for laboratory use
    • F27B17/025—Furnaces of a kind not covered by any preceding group specially designed for laboratory use for dental workpieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/066—Vacuum

Abstract

The invention relates to a porcelain oven with good vacuum effect for dentistry, which comprises a workbench, a heat source, a porcelain oven disc, a support plate, a protective cover, two cylinders, a vacuum mechanism and an illuminating mechanism, wherein the vacuum mechanism comprises an annular air bag, a connecting pipe, an air inlet pipe, an air outlet pipe, a piston, an air cylinder and a driving assembly, the illuminating mechanism comprises an illuminating lamp and a control assembly, the control assembly comprises a connecting unit, a contact switch, a contact block, a sliding block and a spring, the porcelain oven with good vacuum effect for dentistry reduces a gap between the protective cover and a notch through the vacuum mechanism, thereby improving the sealing property of the protective cover, leading the vacuum effect in the protective cover to be better, preventing oxygen from entering the inner part of the protective cover, reducing the probability of oxidation, improving the porcelain oven quality, realizing the function of not illuminating during porcelain oven through the illuminating mechanism, thereby saving energy and improving the environmental protection of the equipment.

Description

Porcelain oven with good vacuum effect for dentistry
Technical Field
The invention relates to the field of dental equipment, in particular to a porcelain oven with good vacuum effect for dentistry.
Background
The product is mainly applied to the processing and manufacturing of dental Porcelain powder and comprises a furnace cover, a barbecue table, a lifting table, an operation panel and the like.
Present dental porcelain stove is carrying out porcelain during operation usually, the light is in the on-state always, and the light need not observe the artificial tooth when the bell lid closes the artificial tooth, but the light starts always, thereby the waste of the energy has been increased, the environmental protection nature of current dental porcelain stove has been reduced, moreover, current dental porcelain stove is when taking out the vacuum, outside air enters into the furnace chamber easily, the probability of being oxidized by the artificial tooth has been increased, thereby greatly reduced the quality of porcelain, the practicality of current dental porcelain stove has been reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the porcelain oven with good vacuum effect for dentistry is provided.
The invention solves the technical problem by adopting the technical scheme that the porcelain oven with good vacuum effect for dentistry comprises a workbench, a heat source, a porcelain plate, a support plate, a protective cover and two cylinders, wherein the two cylinders are respectively and vertically arranged at two sides above the workbench, the cylinder bodies of the cylinders are fixedly connected with the upper part of the workbench, the air rods of the two cylinders are respectively and fixedly connected with two ends of the support plate, the protective cover is fixed below the support plate, a notch is arranged above the workbench, the protective cover is abutted against the inner wall of the notch, the heat source is arranged above the workbench, the porcelain plate is arranged above the heat source, the porcelain plate and the heat source are both arranged inside the protective cover, a P L C is arranged in the workbench, the porcelain oven also comprises a vacuum mechanism and an illuminating mechanism, the illuminating mechanism and the vacuum mechanism are both arranged above the workbench, the illuminating mechanism is connected with the lower part of the support plate, and the vacuum mechanism is connected with the protective cover;
the vacuum mechanism comprises an annular air bag, a connecting pipe, an air inlet pipe, an air outlet pipe, a piston, an air cylinder and a driving assembly, the outer ring of the annular air bag is fixedly connected with the inner wall of a notch, the inner side of the annular air bag is abutted against the periphery of the protective cover, the air cylinder is fixed above the workbench and is communicated with the interior of the protective cover through the air outlet pipe, the air cylinder is communicated with the annular air bag through the air inlet pipe, one-way valves are arranged in the air inlet pipe and the air outlet pipe, two ends of the connecting pipe are respectively communicated with the protective cover and the annular air bag, a valve is arranged in the connecting pipe, the piston is arranged in the air cylinder, the piston is hermetically connected with the inner wall of the air cylinder, the driving assembly is arranged on the inner wall of one side of the air cylinder, which is far away from;
the illumination mechanism comprises an illumination lamp and a control assembly, the illumination lamp is fixed at the top in the protective cover, the control assembly is arranged above the workbench, and the control assembly is connected with the lower part of the support plate;
the control assembly comprises a connecting unit, a contact switch, a contact block, a sliding block and a spring, the contact switch is fixed above the workbench, the contact block is fixedly connected with the sliding block, two ends of the spring are respectively connected with the lower part of the contact block and the upper part of the workbench, the contact block is arranged opposite to the contact switch, the lower part of the sliding block is connected with the lower part of the supporting plate through the connecting unit, and the contact switch is electrically connected with the P L C.
Preferably, in order to limit the moving direction of the sliding block, the control assembly further comprises a guide rod and a guide plate, the guide rod is vertically fixed above the workbench, the guide plate is fixedly connected with the top end of the guide rod, a through hole is formed in the sliding block, the guide rod penetrates through the through hole, and the sliding block is in sliding connection with the guide rod.
Preferably, in order to enable the sliding block to move smoothly, the control assembly further comprises a plurality of moving units, the moving units are circumferentially and uniformly arranged on the inner wall of the through hole, a plurality of grooves are formed in the guide rod, the number of the moving units is equal to that of the grooves, the moving units correspond to the grooves one to one, each moving unit comprises a moving block and balls, one side of each moving block is fixed on the inner wall of the through hole, a notch is formed in the other side of each moving block, the balls are matched with the notches, the centers of the balls are arranged inside the notches, and the balls are abutted against the inner walls of the grooves.
Preferably, in order to drive the sliding block to move, the connecting unit comprises a pull wire and a fixed pulley, the fixed pulley is fixed above the workbench, one end of the pull wire is fixedly connected with the lower part of the support plate, and the other end of the pull wire bypasses the fixed pulley and is fixedly connected with the lower part of the sliding block.
Preferably, in order to prolong the service life of the stay wire, the stay wire is made of nylon.
Preferably, in order to drive the piston to move, the driving assembly comprises a motor, a rotating rod and a connecting rod, the motor is fixed on the inner wall of one side, away from the air outlet pipe, of the air cylinder, the motor is in transmission connection with one end of the rotating rod, the other end of the rotating rod is hinged to the piston through the connecting rod, and the motor is electrically connected with the P L C.
Preferably, the motor is a servo motor for precise and stable operation of the motor.
Preferably, a seal ring is fixed to an inner wall of the protective cover at an end thereof adjacent to the notch for improving sealing performance.
Preferably, in order to improve the lighting effect, the lighting lamp is an L ED lamp.
Preferably, in order to control the operation of the equipment, a plurality of keys are arranged on the workbench, and the keys are electrically connected with the P L C.
The porcelain oven with the good vacuum effect for dentistry has the advantages that the gap between the protective cover and the notch is reduced through the vacuum mechanism, so that the sealing performance of the protective cover is improved, the vacuum effect in the protective cover is better, oxygen is prevented from entering the protective cover, the probability of being oxidized is reduced, and the porcelain baking quality is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view showing the construction of a vacuum-efficient porcelain oven for dentistry according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a schematic view showing a connection structure of a slide block and a guide bar of the porcelain oven for dental use having a good vacuum effect according to the present invention;
in the figure: 1. the air conditioner comprises a workbench, a cylinder 2, a support plate 3, a protective cover 4, a heat source 5, a porcelain baking plate 6, an annular air bag 7, a connecting pipe 8, an air cylinder 9, an air outlet pipe 10, an air inlet pipe 11, an electric motor 12, a rotating rod 13, a connecting rod 14, a piston 15, a sealing ring 16, an illuminating lamp 17, a pull wire 18, a fixed pulley 19, a sliding block 20, a spring 21, a contact switch 22, a contact block 23, a guide rod 24, a guide plate 25, a moving block 26, a ball 27 and a key.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a porcelain oven with good vacuum effect for dentistry comprises a workbench 1, a heat source 5, a porcelain plate 6, a support plate 3, a protective cover 4 and two cylinders 2, wherein the two cylinders 2 are respectively vertically arranged at two sides above the workbench 1, the cylinder body of each cylinder 2 is fixedly connected with the upper part of the workbench 1, the air rods of the two cylinders 2 are respectively fixedly connected with two ends of the support plate 3, the protective cover 4 is fixed below the support plate 3, a notch is arranged above the workbench 1, the protective cover 4 is abutted against the inner wall of the notch, the heat source 5 is arranged above the workbench 1, the porcelain plate 6 is arranged above the heat source 5, the porcelain plate 6 and the heat source 5 are both arranged inside the protective cover 4, P L C is arranged in the workbench 1, and the porcelain oven further comprises a vacuum mechanism and an illuminating mechanism, the illuminating mechanism and the vacuum mechanism are both arranged above the workbench 1, the illuminating mechanism is connected with the lower part of the support plate 3, and the vacuum mechanism is connected with the protective cover 4;
p L C, a programmable logic controller, which employs a programmable memory of a type for storing therein a program for executing user-oriented instructions such as logical operations, sequence control, timing, counting, and arithmetic operations, and controlling various types of machines or production processes by digital or analog input/output, is essentially a computer dedicated to industrial control, whose hardware configuration is substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.
This a porcelain stove that is used for effectual vacuum of dentistry passes through vacuum mechanism, has reduced the gap between safety cover 4 and the notch, thereby has improved safety cover 4's leakproofness, makes the vacuum effect in the safety cover 4 better, prevents that oxygen from getting into safety cover 4's inside, has reduced the probability of being oxidized, has improved the porcelain quality, through lighting mechanism, has realized the function of not throwing light on when porcelain, thereby has practiced thrift the energy, has improved the feature of environmental protection of equipment.
As shown in fig. 1-2, the vacuum mechanism includes an annular airbag 7, a connecting pipe 8, an air inlet pipe 11, an air outlet pipe 10, a piston 15, an inflator 9 and a driving assembly, an outer ring of the annular airbag 7 is fixedly connected with an inner wall of the notch, an inner side of the annular airbag 7 abuts against the periphery of the protective cover 4, the inflator 9 is fixed above the workbench 1, the inflator 9 is communicated with the inside of the protective cover 4 through the air outlet pipe 10, the inflator 9 is communicated with the annular airbag 7 through the air inlet pipe 11, check valves are arranged in the air inlet pipe 11 and the air outlet pipe 10, two ends of the connecting pipe 8 are respectively communicated with the protective cover 4 and the annular airbag 7, a valve is arranged in the connecting pipe 8, the piston 15 is arranged inside the inflator 9, the piston 15 is hermetically connected with an inner wall of the inflator 9, the driving assembly is arranged on the inner wall of the inflator 9 on the side far away from the air outlet pipe 10, the driving assembly is connected with the piston 15;
when the vacuumizing operation is performed, the control driving assembly works, the piston 15 is driven to move in the inflator 9 in a reciprocating mode, the air inside the protective cover 4 is guided into the inflator 9 through the air outlet pipe 10, the air is guided into the annular air bag 7 through the air inlet pipe 11, the annular air bag 7 is made to expand, gaps between the protective cover 4 and notches are reduced, the sealing performance of the protective cover 4 is improved, the vacuum effect in the protective cover 4 is better, oxygen is prevented from entering the inside of the protective cover 4, the probability of being oxidized is reduced, the porcelain baking quality is improved, after porcelain baking is completed, the control valve is opened, the air in the annular air bag 7 is convenient to guide into the inside of the protective cover 4 through the connecting pipe 8, the annular air bag 7 is made to shrink, and the protective cover 4 is convenient to move.
As shown in fig. 1 and 3, the lighting mechanism comprises a lighting lamp 17 and a control assembly, the lighting lamp 17 is fixed on the top in the protective cover 4, the control assembly is arranged above the workbench 1, and the control assembly is connected with the lower part of the support plate 3;
the control assembly comprises a connecting unit, a contact switch 22, a contact block 23, a sliding block 20 and a spring 21, the contact switch 22 is fixed above the workbench 1, the contact block 23 is fixedly connected with the sliding block 20, two ends of the spring 21 are respectively connected with the lower part of the contact block 23 and the upper part of the workbench 1, the contact block 23 is arranged opposite to the contact switch 22, the lower part of the sliding block 20 is connected with the lower part of the support plate 3 through the connecting unit, and the contact switch 22 is electrically connected with the P L C.
When carrying out porcelain during operation, cylinder 2 starts, withdraw the gas pole, drive extension board 3 downstream, restoring force through spring 21, make slider 20 rebound, thereby make contact piece 23 and contact switch 22 separation, thereby make light 17 close, after porcelain is accomplished, cylinder 2 starts, extension gas pole, drive extension board 3 rebound, drive slider 20 rebound through the linkage unit, compression spring 21, make contact piece 23 to the direction removal that is close to contact switch 22, make contact piece 23 and contact switch 22 support and lean on, thereby make light 17 carry out the work of throwing light on, the staff of being convenient for observes the porcelain state, thereby realized the function of not throwing light on when porcelain, thereby the energy has been practiced thrift, the feature of environmental protection of equipment has been improved.
Preferably, in order to limit the moving direction of the sliding block 20, the control assembly further comprises a guide rod 24 and a guide plate 25, the guide rod 24 is vertically fixed above the workbench 1, the guide plate 25 is fixedly connected with the top end of the guide rod 24, a through hole is formed in the sliding block 20, the guide rod 24 passes through the through hole, and the sliding block 20 is slidably connected with the guide rod 24.
Through setting up guide bar 24, restricted the moving direction of slider 20 for slider 20 is more stable when removing, through setting up deflector 25, has restricted slider 20 along guide bar 24's displacement, thereby prevents that slider 20 and guide bar 24 from breaking away from, has improved the stability when slider 20 removes.
As shown in fig. 4, the control assembly further includes a plurality of moving units, the moving units are uniformly arranged on the inner wall of the through hole in the circumferential direction, a plurality of grooves are formed in the guide rod 24, the number of the moving units is equal to that of the grooves, the moving units correspond to the grooves one to one, each moving unit includes a moving block 26 and balls 27, one side of each moving block 26 is fixed on the inner wall of the through hole, the other side of each moving block 26 is provided with a notch, the balls 27 are matched with the notches, the centers of the balls 27 are arranged inside the notches, and the balls 27 abut against the inner walls of the grooves.
When the slider 20 moves along the guide rod 24, the moving block 26 is driven to move, so that the balls 27 move along the grooves, the slider 20 cannot rotate when moving along the guide rod 24, the stability of the slider 20 during moving is improved, and by arranging the balls 27, the friction force between the slider 20 and the grooves is reduced, and therefore the smoothness of the slider 20 during moving is improved.
Preferably, in order to drive the sliding block 20 to move, the connecting unit comprises a pulling wire 18 and a fixed pulley 19, the fixed pulley 19 is fixed above the workbench 1, one end of the pulling wire 18 is fixedly connected with the lower part of the support plate 3, and the other end of the pulling wire 18 is fixedly connected with the lower part of the sliding block 20 by passing through the fixed pulley 19.
When carrying out porcelain during operation, cylinder 2 starts, withdraw the gas pole, drive extension board 3 downstream, restoring force through spring 21, make slider 20 rebound, thereby make contact block 23 and contact switch 22 separation, thereby make light 17 close, after porcelain is accomplished, cylinder 2 starts, extension gas pole, drive extension board 3 rebound, drive slider 20 rebound through 18 of acting as go-between, compression spring 21, make contact block 23 to the direction removal that is close to contact switch 22, make contact block 23 and contact switch 22 support and lean on, thereby make light 17 carry out the illumination work, the staff of being convenient for observes the porcelain state, thereby realized the function of not throwing light on when porcelain, thereby the energy has been practiced thrift, the feature of environmental protection of equipment has been improved.
Preferably, in order to prolong the service life of the stay wire 18, the stay wire 18 is made of nylon.
Preferably, in order to drive the piston 15 to move, the driving assembly comprises a motor 12, a rotating rod 13 and a connecting rod 14, the motor 12 is fixed on the inner wall of the side of the air cylinder 9 far away from the air outlet pipe 10, the motor 12 is in transmission connection with one end of the rotating rod 13, the other end of the rotating rod 13 is hinged with the piston 15 through the connecting rod 14, and the motor 12 is electrically connected with the P L C.
When the vacuum pumping work is carried out, the control motor 12 is started, the rotating rod 13 is driven to rotate, the piston 15 is driven to move in the air cylinder 9 in a reciprocating mode through the connecting rod 14, so that air inside the protective cover 4 is led into the air cylinder 9 through the air outlet pipe 10, then the air is led into the annular air bag 7 through the air inlet pipe 11, the annular air bag 7 is made to expand, gaps between the protective cover 4 and notches are reduced, the sealing performance of the protective cover 4 is improved, the vacuum effect in the protective cover 4 is better, oxygen is prevented from entering the protective cover 4, the probability of being oxidized is reduced, and the porcelain baking quality is improved.
Preferably, the motor 12 is a servo motor 12 in order to allow precise and stable operation of the motor 12.
Preferably, a sealing ring 16 is fixed to the inner wall of the protective cover 4 near one end of the notch for improving the sealing performance.
Preferably, the lighting lamp 17 is L ED lamp for improving lighting effect.
Preferably, in order to control the operation of the device, a plurality of keys 28 are arranged on the workbench 1, and the keys 28 are electrically connected with the P L C.
By setting the keys 28, the device can be controlled to work, thereby improving the intelligent degree of the device.
When the vacuum pumping work is carried out, the control motor 12 is started, the rotating rod 13 is driven to rotate, the piston 15 is driven to move in the inflator 9 in a reciprocating mode through the connecting rod 14, the air inside the protective cover 4 is guided into the inflator 9 through the air outlet pipe 10, the air is guided into the annular air bag 7 through the air inlet pipe 11, the annular air bag 7 is made to expand, gaps between the protective cover 4 and notches are reduced, the sealing performance of the protective cover 4 is improved, the vacuum effect in the protective cover 4 is better, oxygen is prevented from entering the protective cover 4, the probability of being oxidized is reduced, the porcelain baking quality is improved, after porcelain is finished, the control valve is opened, the air in the annular air bag 7 can be conveniently guided into the protective cover 4 through the connecting pipe 8, the annular air bag 7 can shrink, and the protective cover 4 can be moved conveniently. When carrying out porcelain during operation, cylinder 2 starts, withdraw the gas pole, drive extension board 3 downstream, restoring force through spring 21, make slider 20 rebound, thereby make contact block 23 and contact switch 22 separation, thereby make light 17 close, after porcelain is accomplished, cylinder 2 starts, extension gas pole, drive extension board 3 rebound, drive slider 20 rebound through 18 of acting as go-between, compression spring 21, make contact block 23 to the direction removal that is close to contact switch 22, make contact block 23 and contact switch 22 support and lean on, thereby make light 17 carry out the illumination work, the staff of being convenient for observes the porcelain state, thereby realized the function of not throwing light on when porcelain, thereby the energy has been practiced thrift, the feature of environmental protection of equipment has been improved.
Compared with the prior art, this a porcelain stove that is used for dentistry vacuum effect is good passes through vacuum mechanism, the gap between safety cover 4 and the notch has been reduced, thereby the leakproofness of safety cover 4 has been improved, make the vacuum effect in the safety cover 4 better, prevent that oxygen from getting into the inside of safety cover 4, the probability of being oxidized has been reduced, the porcelain quality has been improved, compare with current vacuum mechanism, this vacuum mechanism vacuum effect is good, the practicality is high, through lighting mechanism, the function of not throwing light on when porcelain has been realized, thereby the energy has been practiced thrift, the feature of environmental protection of equipment has been improved, compare with current lighting mechanism, this lighting mechanism need not electric drive, equipment environmental protection more.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The porcelain oven for the dentistry with the good vacuum effect comprises a workbench (1), a heat source (5), a porcelain baking plate (6), a support plate (3), a protective cover (4) and two cylinders (2), wherein the two cylinders (2) are vertically arranged on two sides above the workbench (1) respectively, a cylinder body of each cylinder (2) is fixedly connected with the upper part of the workbench (1), air rods of the two cylinders (2) are fixedly connected with two ends of the support plate (3) respectively, the protective cover (4) is fixed below the support plate (3), a notch is formed in the upper part of the workbench (1), the protective cover (4) is abutted against the inner wall of the notch, the heat source (5) is arranged above the workbench (1), the porcelain baking plate (6) is arranged above the heat source (5), the porcelain baking plate (6) and the heat source (5) are arranged in the protective cover (4), and a P L C is arranged in the workbench (1) and is characterized by further comprising a vacuum mechanism and an illumination mechanism, the illumination mechanism and the vacuum mechanism are arranged above the workbench (1) and connected with the protective cover (3);
the vacuum mechanism comprises an annular air bag (7), a connecting pipe (8), an air inlet pipe (11), an air outlet pipe (10), a piston (15), an air cylinder (9) and a driving assembly, the outer ring of the annular air bag (7) is fixedly connected with the inner wall of a notch, the inner side of the annular air bag (7) is abutted to the periphery of a protective cover (4), the air cylinder (9) is fixed above the workbench (1), the air cylinder (9) is communicated with the inner part of the protective cover (4) through the air outlet pipe (10), the air cylinder (9) is communicated with the annular air bag (7) through the air inlet pipe (11), one-way valves are arranged in the air inlet pipe (11) and the air outlet pipe (10), two ends of the connecting pipe (8) are respectively communicated with the protective cover (4) and the annular air bag (7), a valve is arranged in the connecting pipe (8), the piston (15) is arranged in the air cylinder (9), the piston (15) is hermetically connected with the inner wall of the air cylinder (9), the driving assembly is arranged on the inner wall of one side of the air cylinder (9) far away from the air outlet pipe (10), the driving assembly is connected with;
the illumination mechanism comprises an illumination lamp (17) and a control assembly, the illumination lamp (17) is fixed at the top in the protective cover (4), the control assembly is arranged above the workbench (1), and the control assembly is connected with the lower part of the support plate (3);
the control assembly comprises a connecting unit, a contact switch (22), a contact block (23), a sliding block (20) and a spring (21), the contact switch (22) is fixed above the workbench (1), the contact block (23) is fixedly connected with the sliding block (20), two ends of the spring (21) are respectively connected with the lower part of the contact block (23) and the upper part of the workbench (1), the contact block (23) is just opposite to the contact switch (22), the lower part of the sliding block (20) is connected with the lower part of the support plate (3) through the connecting unit, and the contact switch (22) is electrically connected with P L C.
2. The vacuum-efficient porcelain oven for dentistry as claimed in claim 1, wherein the control assembly further comprises a guide rod (24) and a guide plate (25), wherein the guide rod (24) is vertically fixed above the worktable (1), the guide plate (25) is fixedly connected with the top end of the guide rod (24), the slider (20) is provided with a through hole, the guide rod (24) passes through the through hole, and the slider (20) is slidably connected with the guide rod (24).
3. The dental vacuum-efficient porcelain oven according to claim 2, wherein the control assembly further comprises a plurality of moving units, the moving units are circumferentially and uniformly arranged on the inner wall of the through hole, a plurality of grooves are formed in the guide rod (24), the number of the moving units is equal to that of the grooves, the moving units and the grooves correspond to each other one by one, each moving unit comprises a moving block (26) and a ball (27), one side of the moving block (26) is fixed on the inner wall of the through hole, the other side of the moving block (26) is provided with a notch, the balls (27) are matched with the notches, the center of the ball (27) is arranged inside the notch, and the balls (27) abut against the inner wall of the grooves.
4. The vacuum-efficient porcelain oven for dentistry as claimed in claim 1, wherein the connection unit comprises a pulling wire (18) and a fixed pulley (19), the fixed pulley (19) is fixed above the working table (1), one end of the pulling wire (18) is fixedly connected with the lower part of the support plate (3), and the other end of the pulling wire (18) is fixedly connected with the lower part of the sliding block (20) by passing around the fixed pulley (19).
5. The vacuum-efficient porcelain oven for dentistry as set forth in claim 4, wherein the pulling wire (18) is made of nylon.
6. The vacuum-efficient porcelain oven for dentistry as claimed in claim 1, wherein the driving assembly comprises a motor (12), a rotary rod (13) and a connecting rod (14), the motor (12) is fixed on the inner wall of the side of the air cylinder (9) far from the air outlet pipe (10), the motor (12) is in transmission connection with one end of the rotary rod (13), the other end of the rotary rod (13) is hinged with the piston (15) through the connecting rod (14), and the motor (12) is electrically connected with P L C.
7. The vacuum-efficient porcelain oven for dentistry as claimed in claim 6, wherein said motor (12) is a servo motor (12).
8. The vacuum-efficient porcelain oven for dentistry as claimed in claim 1, wherein a sealing ring (16) is fixed to the inner wall of the end of the protective cover (4) near the recess.
9. The vacuum-efficient porcelain oven for dentistry as claimed in claim 1, wherein the illumination lamp (17) is L ED lamp.
10. The porcelain oven with good vacuum effect for dental use according to claim 1, wherein the working table (1) is provided with a plurality of keys (28), and the keys (28) are electrically connected with P L C.
CN202010294464.3A 2020-04-15 2020-04-15 Porcelain oven with good vacuum effect for dentistry Withdrawn CN111486708A (en)

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