Vacuum-free preparation system of zirconium oxide all-ceramic

Abstract

The utility model discloses a zirconium oxide all-ceramic vacuum-free preparation system, which relates to the technical field of zirconium oxide all-ceramic and comprises a sintering furnace body, a servo rotating motor is mounted in the sintering furnace body, the output end of the servo rotating motor is connected with a hollow sleeve, and a support rod is slidably connected in the hollow sleeve. A bidirectional driving threaded rod is fixed to the top end of the supporting rod, a sleeve is rotationally connected to the outer surface of the middle section of the bidirectional driving threaded rod, threaded pipes are in threaded connection with the positions, above and below the sleeve, of the outer surface of the bidirectional driving threaded rod, connecting supports are fixed to the outer walls of the threaded pipes and the sleeve, and metal heat conduction bases are fixed to the front ends of the connecting supports; the zirconium oxide all-ceramic dental crown sintering device is reasonable in structural design, sintering work of a zirconium oxide all-ceramic dental crown can be effectively completed, sintering efficiency is improved, heat loss is avoided, the sintered zirconium oxide all-ceramic dental crown can be conveniently taken out after sintering is completed, and using convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of zirconia all-ceramics, in particular to a vacuum-free preparation system for zirconia all-ceramics. Background Art

[0002] Zirconia all-ceramic teeth are a type of all-ceramic porcelain teeth that can help restore the normal structure and chewing function of teeth. With the development of zirconia all-ceramic technology, its biocompatibility and physical and chemical properties have been relatively perfect. Zirconia all-ceramic teeth have no metal base inner bottom, and the color is relatively close to normal teeth, which is more beautiful. Zirconia all-ceramic teeth have no metal, so they will not cause gingival staining at the gingival margin. They have good biocompatibility and little irritation to the gums. They are not easy to cause rejection reactions after wearing and can reduce the occurrence of gingivitis. Therefore, they are widely used in the field of dental implants.

[0003] In the existing zirconia all-ceramic tooth preparation process, the prepared crown usually needs to be sintered. After sintering, the crucible needs to be removed with tweezers and the sintered crown needs to be taken out of the crucible. However, the temperature of the crucible is relatively high and it is easy to tip over during the clamping process, which brings inconvenience to the operator. Utility Model Content

[0004] The main purpose of the utility model is to provide a vacuum-free preparation system for zirconium oxide all-ceramic, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The vacuum-free preparation system of zirconia all-ceramic comprises a sintering furnace body, the sintering furnace body is provided with a cavity, the inner bottom end of the inner side of the cavity is installed with a servo rotating motor with an output direction facing upward, the output end of the servo rotating motor is fixedly connected to a hollow sleeve through a coupling, a support rod is slidably connected in the hollow sleeve, the top end of the support rod is fixed with a bidirectional drive threaded rod, the outer surface of the middle section of the bidirectional drive threaded rod is rotatably connected with a sleeve, the upper and lower parts of the sleeve are threadedly connected to the outer surface of the bidirectional drive threaded rod, the outer walls of the threaded tube and the sleeve are fixed with a connecting bracket, the front end of the connecting bracket is fixed with a metal heat-conducting seat, the upper end surface of the metal heat-conducting seat is placed with a crucible, the back side of the sintering furnace body is fixedly installed with a cylinder, the output end of the cylinder is provided with a lifting column, the top end of the lifting column is fixedly connected to the sleeve through a connecting rod, a heating chamber is provided on the inner side of the upper end of the sintering furnace body, and an electric heating ring is provided in the heating chamber.

[0007] Preferably, a support block is fixed to the inner wall of the heating chamber, and V-shaped rods are movably connected to both ends of the support block. The other ends of the two V-shaped rods are connected to the outer wall of the electric heating ring. Drive rods are provided on both sides of the support block, and a roller is installed at one end of the drive rod. The outer wall of the V-shaped rod is provided with a rolling groove suitable for the roller.

[0008] Preferably, a driving bar is provided on the inner side of the upper end of the sintering furnace body, and the bottom end of the driving bar extends to the outside of the sintering furnace body and is fixed with an abutment block.

[0009] Preferably, the side of the driving bar is provided with an inclined surface, a driving plate is fixed between the other ends of the two driving rods, a spring is connected between the driving plate and the outer wall of the heating chamber, a wedge block is fixed on the outer surface of the driving plate, and the side of the wedge block fits the inclined surface of the driving bar.

[0010] Preferably, a clamping plate is bonded to the bottom end of the metal heat-conducting seat at the lowest end, and an arc-shaped abutting rod is fixed to the bottom end of the clamping plate, and the arc-shaped abutting rod is located directly below the abutting block.

[0011] Preferably, the outer surface of the support rod is provided with four symmetrically arranged sliding bars, and the inner wall of the hollow sleeve is provided with sliding grooves adapted to the sliding bars.

[0012] Preferably, the upper surface of the metal heat-conducting seat is provided with a groove adapted to the bottom end of the crucible.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model is provided with a servo rotary motor to drive the hollow sleeve to rotate, and the hollow sleeve drives the support rod to rotate, so that the bidirectional drive threaded rod can also rotate, and the upper and lower crucibles can move away from each other, so that there is a large gap between the three crucibles. At this time, it is convenient to use tweezers to directly clamp the sintered zirconia all-ceramic teeth in the crucible, thereby improving the convenience of use;

[0015] 2. The utility model provides a lifting column that can squeeze the abutment block during the rising process, so that the driving bar can move upward. During the upward movement of the driving bar, it can squeeze the wedge block, so that the driving rod can drive the V-shaped rod to move. The two electric heating rings can fit the metal heat-conducting seat, so that the crucible is quickly heated, which improves the heating efficiency and avoids heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a partial structural diagram of the top interior of the sintering furnace body of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the drive bar of the utility model;

[0019] Figure 4 This is a cross-sectional view of the hollow sleeve of the utility model.

[0020] In the figure: 1. Sintering furnace body; 101. Cavity; 102. Heating chamber; 2. Servo rotary motor; 201. Hollow sleeve; 202. Support rod; 203. Bidirectional drive threaded rod; 204. Sleeve; 205. Threaded tube; 206. Connecting bracket; 207. Slide; 3. Metal heat-conducting seat; 301. Clamping plate; 302. Arc-shaped abutting rod; 4. Crucible; 5. Cylinder; 501. Lifting column; 502. Connecting rod; 6. Electric heating ring; 7. Support block; 701. V-shaped rod; 702. Drive rod; 703. Roller; 704. Rolling groove; 705. Drive plate; 706. Spring; 707. Wedge block; 8. Drive bar; 801. Abutting block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4As shown, the vacuum-free preparation system of zirconia all-ceramic includes a sintering furnace body 1, a cavity 101 is provided in the sintering furnace body 1, a servo rotary motor 2 with an output direction facing upward is installed at the bottom end of the inner side of the cavity 101, the output end of the servo rotary motor 2 is fixedly connected to a hollow sleeve 201 through a coupling, a support rod 202 is slidably connected in the hollow sleeve 201, a bidirectional drive threaded rod 203 is fixed to the top end of the support rod 202, and a sleeve 204 is rotatably connected to the outer surface of the middle section of the bidirectional drive threaded rod 203. The upper and lower parts of the tube 204 are threadedly connected to the outer surface of the bidirectional drive threaded rod 203 with a threaded tube 205. The outer wall of the threaded tube 205 and the sleeve 204 are fixed with a connecting bracket 206. The front end of the connecting bracket 206 is fixed with a metal heat-conducting seat 3. The upper end surface of the metal heat-conducting seat 3 is placed with a crucible 4. The zirconia all-ceramic crowns to be sintered are placed in the three crucibles 4. The servo rotary motor 2 drives the hollow sleeve 201 to rotate, and the hollow sleeve 201 drives the support rod 202 to rotate, so that the bidirectional drive The threaded rod 203 can also rotate, so that the upper and lower crucibles 4 can move closer to one end of the middle section, so that the three metal crucibles 4 can be stacked. A cylinder 5 is fixedly installed on the back of the sintering furnace body 1. The output end of the cylinder 5 is provided with a lifting column 501. The top of the lifting column 501 is fixedly connected to the sleeve 204 through a connecting rod 502. A heating chamber 102 is provided on the inner side of the upper end of the sintering furnace body 1. An electric heating ring 6 is provided in the heating chamber 102. After the stacking is completed, the three crucibles 4 can be extended into the In the heating chamber 102, the high-temperature heat generated by the electric heating ring 6 can be directly transferred to the metal heat-conducting seat 3. The metal heat-conducting seat 3 can heat the crucible 4 more evenly, thereby effectively sintering the zirconia all-ceramic crown. After sintering is completed, the lifting column 501 drives the bidirectional drive threaded rod 203 to descend, and the servo rotary motor 2 rotates in the opposite direction, which can separate the three crucibles 4. At this time, tweezers can be used to directly clamp the sintered zirconia all-ceramic crown in the crucible 4, thereby effectively avoiding the inconvenience caused by the high temperature of the crucible 4.

[0023] A support block 7 is fixed to the inner wall of the heating chamber 102, and V-shaped rods 701 are movably connected at both ends of the support block 7. The other ends of the two V-shaped rods 701 are connected to the outer wall of the electric heating ring 6. Driving rods 702 are provided on both sides of the support block 7, and a roller 703 is installed at one end of the driving rod 702. The outer wall of the V-shaped rod 701 is provided with a rolling groove 704 suitable for the roller 703. The driving rod 702 can make the front ends of the two V-shaped rods 701 move closer to the middle, so that the electric heating ring 6 can fit the metal thermal conductive seat 3, thereby quickly heating the metal thermal conductive seat 3, so that the crucible 4 can also be quickly heated.

[0024] A driving bar 8 is provided on the inner side of the upper end of the sintering furnace body 1 . The bottom end of the driving bar 8 extends to the outside of the sintering furnace body 1 and is fixed with an abutment block 801 .

[0025] The side of the driving bar 8 is provided with an inclined surface, and a driving plate 705 is fixed between the other ends of the two driving rods 702. A spring 706 is connected between the driving plate 705 and the outer wall of the heating chamber 102. A wedge block 707 is fixed on the outer surface of the driving plate 705, and the side of the wedge block 707 fits the inclined surface of the driving bar 8.

[0026] The bottom end of the lowest end metal heat-conducting seat 3 is bonded with a snap plate 301, and the bottom end of the snap plate 301 is fixed with an arc-shaped abutting rod 302, which is located just below the abutting block 801. When the lifting column 501 is rising, the arc-shaped abutting rod 302 can press the abutting block 801 upward, so that the driving bar 8 can move upward. When the driving bar 8 moves upward, it can squeeze the wedge block 707, so that the driving rod 702 can drive the V-shaped rod 701 to move, so that the electric heating ring 6 can fit the metal heat-conducting seat 3, and when the lifting column 501 is descending, the spring 706 will squeeze the driving plate 705, and the wedge block 707 will squeeze the driving bar 8. The position of the driving bar 8 drops and the driving rod 702 can drive the V-shaped rod 701 to rotate, and the two electric heating rings 6 are away from the metal heat-conducting seat 3.

[0027] The outer surface of the support rod 202 is provided with four symmetrically arranged sliding bars 207 , and the inner wall of the hollow sleeve 201 is provided with sliding grooves adapted to the sliding bars 207 , which can enable the support rod 202 to drive the bidirectional drive threaded rod 203 to rotate.

[0028] The upper surface of the metal heat-conducting seat 3 is provided with a groove adapted to the bottom end of the crucible 4 and can be used to place the crucible 4 .

[0029] Working principle: The utility model is a vacuum-free preparation system for zirconia all-ceramic. When in use, when the cylinder 5 drives the lifting column 501, the three stacked crucibles 4 will extend into the heating chamber 102 under the action of the lifting column 501, and the lifting column 501 can press the abutment block 801 upward during the rising process, so that the driving bar 8 can move upward. During the upward movement of the driving bar 8, it can squeeze the wedge block 707, so that the driving rod 702 can drive the V-shaped rod 701 to move, so that the electric heating ring 6 can fit the metal heat-conducting seat 3, which can The crucible 4 is quickly heated. After the heating is completed, the lifting column 501 descends, the spring 706 squeezes the driving plate 705, and the wedge block 707 slowly squeezes the driving bar 8. The position of the driving bar 8 descends and the driving rod 702 can drive the V-shaped rod 701 to rotate. The two electric heating rings 6 can move away from the metal heat-conducting seat 3. When the servo rotary motor 2 drives the hollow sleeve 201 to rotate in the reverse direction, the hollow sleeve 201 can drive the support rod 202 to rotate, so that the bidirectional drive threaded rod 203 can also rotate, so that the upper and lower crucibles 4 can move away from each other.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum-free preparation system for zirconia all-ceramic, comprising a sintering furnace body (1), characterized in that: The sintering furnace body (1) is provided with a cavity (101), and a servo rotary motor (2) with an output direction facing upward is installed at the inner bottom end of the cavity (101), and the output end of the servo rotary motor (2) is fixedly connected to a hollow sleeve (201) through a coupling, and a support rod (202) is slidably connected in the hollow sleeve (201), and a bidirectional driving threaded rod (203) is fixed to the top end of the support rod (202), and a sleeve (204) is rotatably connected to the outer surface of the middle section of the bidirectional driving threaded rod (203), and the upper and lower parts of the sleeve (204) are both threadedly connected to the outer surface of the bidirectional driving threaded rod (203). (205), the outer walls of the threaded tube (205) and the sleeve (204) are both fixed with a connecting bracket (206), the front end of the connecting bracket (206) is fixed with a metal heat-conducting seat (3), the upper end surface of the metal heat-conducting seat (3) is placed with a crucible (4), the back of the sintering furnace body (1) is fixedly installed with a cylinder (5), the output end of the cylinder (5) is provided with a lifting column (501), the top end of the lifting column (501) is fixedly connected to the sleeve (204) through a connecting rod (502), and a heating chamber (102) is provided on the inner side of the upper end of the sintering furnace body (1), and an electric heating ring (6) is provided in the heating chamber (102).

2. The vacuum-free preparation system for zirconia all-ceramic according to claim 1, characterized in that: A support block (7) is fixed to the inner wall of the heating chamber (102), and V-shaped rods (701) are movably connected at both ends of the support block (7), and the other ends of the two V-shaped rods (701) are connected to the outer wall of the electric heating ring (6). A driving rod (702) is provided on both sides of the support block (7), and a roller (703) is installed at one end of the driving rod (702). The outer wall of the V-shaped rod (701) is provided with a rolling groove (704) suitable for the roller (703).

3. The vacuum-free preparation system for zirconia all-ceramic according to claim 2, characterized in that: A driving bar (8) is provided on the inner side of the upper end of the sintering furnace body (1); the bottom end of the driving bar (8) extends to the outside of the sintering furnace body (1) and is fixed with an abutment block (801).

4. The vacuum-free preparation system for zirconia all-ceramic according to claim 3, characterized in that: The side of the driving bar (8) is provided with an inclined surface, a driving plate (705) is fixed between the other ends of the two driving rods (702), a spring (706) is connected between the driving plate (705) and the outer wall of the heating chamber (102), a wedge block (707) is fixed on the outer surface of the driving plate (705), and the side of the wedge block (707) is in contact with the inclined surface of the driving bar (8).

5. The vacuum-free preparation system for zirconia all-ceramic according to claim 3, characterized in that: A clamping plate (301) is bonded to the bottom end of the metal heat-conducting seat (3) at the lowest end, and an arc-shaped abutting rod (302) is fixed to the bottom end of the clamping plate (301), and the arc-shaped abutting rod (302) is located directly below the abutting block (801).

6. The vacuum-free preparation system for zirconia all-ceramic according to claim 1, characterized in that: The outer surface of the support rod (202) is provided with four symmetrically arranged sliding strips (207), and the inner wall of the hollow sleeve (201) is provided with sliding grooves adapted to the sliding strips (207).

7. The vacuum-free preparation system for zirconia all-ceramic according to claim 1, characterized in that: The upper end surface of the metal heat-conducting seat (3) is provided with a groove adapted to the bottom end of the crucible (4).

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