CN214908462U

CN214908462U - Artificial tooth articulator

Info

Publication number: CN214908462U
Application number: CN202120340086.8U
Authority: CN
Inventors: 龙娇; 钟伟秋; 刘林; 王斐; 林迎国
Original assignee: Spark Wanfang Dental Technology Beijing Co ltd
Current assignee: Spark Wanfang Dental Technology Beijing Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-11-30
Anticipated expiration: 2031-02-05

Abstract

The application relates to an artificial tooth articulator, which comprises a jaw plate mechanism and a bracket mechanism, wherein the jaw plate mechanism comprises an upper jaw plate, a lower jaw plate, a connecting frame and a rotating rod, the surface of a cross rod part of the connecting frame is fixedly connected with a mounting groove, one end of the rotating rod, which is far away from the upper jaw plate and the lower jaw plate, is fixedly connected with a universal ball, the universal ball is arranged in the mounting groove, the size of the universal ball is matched with the inner size of the mounting groove, an attaching plate is arranged outside the mounting groove, the attaching plate is U-shaped, the size of the inner peripheral surface of the attaching plate is the same as that of the outer peripheral surface of the mounting groove, the attaching plate is arranged opposite to the inner space of the mounting groove, the outer part of one end surface of the attaching plate is provided with four fixing bolts, the fixing bolts penetrate through the end face of the attaching plate and the side wall of the mounting groove and are tightly abutted against the outer peripheral face of the universal ball in the hollow groove; the present application has the effect of enabling the denture articulator to rotate in both the horizontal and vertical directions.

Description

Artificial tooth articulator

Technical Field

The application relates to the field of false tooth processing instruments, in particular to a false tooth articulator.

Background

Denture articulators are currently the means used to simulate the jaw and jaw articulation mechanisms in order to analyze and diagnose problems associated with the teeth and to manufacture various devices and dentures based on the patient's specific bite. Upper and lower frame assemblies are commonly used to simulate the upper and lower jaws of a human. Currently, articulators have a ball-over-socket and ball-under-socket type. In most cases, both types of articulators are able to simulate condylar ball and socket structures to simulate a human's actual jaw articulation structure, with the same effect. The existing usage method of the denture articulator is to install a jaw plate for installing a denture on a denture occlusion clamp and carry out dispensing fixation by a dispenser. However, the installation method is complicated, so that an operator cannot conveniently install and detach the jaw plate and the denture articulator, and the improvement is available.

The current chinese utility model as publication number cn201820565635.x discloses an artificial tooth articulator, including jaw plate and mounting bracket, set firmly a spacing on the outer wall of jaw plate, the confession has all been seted up at the both ends of mounting bracket spacing inlays the mounting groove of establishing, spacing both ends are all seted up flutedly, install spacing post in the recess, and set up elastic component on the spacing post is in simultaneously seted up on the inner wall of mounting groove with spacing post corresponds the locating hole that sets up, elastic component does spacing post provides one and supports tightly and be in the tight power of support in the locating hole, in order to prevent the jaw plate with the mounting bracket takes place to break away from.

In view of the above-mentioned related art, the inventor believes that the present invention does not provide for a pivotal design of the jaw plate in the horizontal direction, so that the jaw plate can only follow the mounting frame for movement in the vertical direction.

SUMMERY OF THE UTILITY MODEL

In order to enable the denture articulator to rotate in the horizontal and vertical directions and to structurally reinforce the denture articulator, the present application provides a denture articulator.

The technical scheme provided by the application is as follows:

an artificial tooth articulator comprises a jaw plate mechanism and a bracket mechanism, wherein the jaw plate mechanism comprises an upper jaw plate, a lower jaw plate, a connecting frame and a rotating rod, the surface of a cross rod part of the connecting frame is fixedly connected with a mounting groove, one end of the rotating rod, which is far away from the upper jaw plate and the lower jaw plate, is fixedly connected with a universal ball, the universal ball is spherical, the universal ball is arranged inside the mounting groove, the size of the universal ball is matched with the inner size of the mounting groove, the fitting plate is arranged outside the mounting groove and is U-shaped, the size of the inner peripheral surface of the attaching plate is the same as that of the outer peripheral surface of the mounting groove, the attaching plate is arranged opposite to the inner space of the mounting groove, the outer part of one end surface of the attaching plate is provided with four fixing bolts, and evenly set up in the terminal surface of attaching plate, fixing bolt wears to locate the terminal surface of attaching plate and the lateral wall of mounting groove to closely the butt in the outer peripheral face of dead slot inside and universal ball.

By adopting the technical scheme, the universal ball can control the movement of the upper jaw plate and the lower jaw plate in the vertical direction, so that the upper jaw plate and the lower jaw plate can better rotate slightly in the horizontal direction and the vertical direction, and the oral cavity mechanisms of different human bodies can be better simulated; fixing bolt makes the outer global extrusion force that all receives in four not equidirectionals of universal ball to make universal ball can not lead to the position to produce the skew because of the self gravity of tip upper jaw board and lower jaw board, and fixing bolt can effectively fix the relevant spatial position of laminating board and mounting groove, thereby make the device have the wholeness, fixing bolt cooperates the rotation that realizes the horizontal direction to upper jaw board and lower jaw board with universal ball.

Optionally, the middle positions of the horizontal ends of the upper jaw plate and the lower jaw plate are respectively inserted with a connecting frame, the connecting frames are of U-shaped structures, two end parts of each connecting frame are respectively and tightly inserted in the middle positions of the upper jaw plate and the lower jaw plate and go deep into the end faces of the upper jaw plate and the lower jaw plate, and the connecting frames can be constructed by adopting standard metal type materials.

Through adopting above-mentioned technical scheme, the link makes maxilla and mandible board stable in structure on the horizontal direction, and standard metal type material has considerable dead weight stability and anti extrusion stability for the link has the regulation level and stabilizes, bears the weight of strong and non-deformable characteristics.

Optionally, the inside of the mounting groove is of a square hollow structure, and the width of the end face of the mounting groove is consistent with the length of the cross rod part of the connecting frame, so that the center of the mounting groove coincides with the center of the cross rod of the connecting frame.

Through adopting above-mentioned technical scheme, the mounting groove can make universal ball closely laminate at the mounting groove inner peripheral surface, and does not influence the rotation of universal ball at the horizontal direction to make universal ball can be under the cooperation of mounting groove and dwang with the coaxial rotation of dwang.

Optionally, the dwang wears to locate the central point of link and mounting groove and puts, and the dwang is cylindrical, and the tip of dwang is pegged graft inside maxilla board and lower jaw board terminal surface, and the tip of dwang is located the central point between two tip of link and puts.

Through adopting above-mentioned technical scheme, the dwang can carry out the ascending rotation of horizontal direction in the through-hole to drive maxilla board and lower jaw board and rotate on the horizontal direction.

Optionally, the support mechanism comprises two fixing rods, and one ends of the two fixing rods are fixedly connected with the center positions of the outer end faces of the two attaching plates respectively; one ends of the two fixed rods, which are far away from the attaching plate, are hinged with folding rods through hinges, the folding rods can be movably connected with the fixed rods through the hinges, and the two folding rods are arranged towards the inner parts of the upper jaw plate and the lower jaw plate; the end portion of the folding rod, which deviates from the fixed rod, is fixedly connected with a mounting frame, the mounting frame is U-shaped, and the center of the transverse portion of the mounting frame is fixedly connected with the end portion of the folding rod.

Through adopting above-mentioned technical scheme, be provided with three pin joint between dead lever, folding rod and the mounting bracket to make gimbal mechanism can adjust in a flexible way the ascending height in vertical side when not fixed, and can be connected upper jaw plate and lower jaw plate activity, accord with ergonomic mechanism.

Optionally, the transverse part of the mounting bracket that the upper jaw plate is connected to is provided with a through hole in the vertical direction, an internal thread is arranged in the through hole, a first bolt matched with the size of the through hole is arranged at the position of the through hole, the first bolt penetrates through the through hole from the lower side of the mounting bracket and is connected with the through hole in a threaded manner, and the end part of the first bolt is abutted to the outer peripheral surface of the fixing rod.

Through adopting above-mentioned technical scheme, first bolt makes the dead lever that the upper jaw plate is connected and the angle between the mounting bracket that the upper jaw plate is connected fixed to increase the structural integrity of dead lever and mounting bracket

Optionally, the through-hole has been seted up along vertical direction at the terminal surface that deviates from the mounting bracket direction to the dead lever that the lower jaw plate is connected, is provided with the internal thread in the through-hole, and through-hole department is provided with the second bolt, and the second bolt is worn to locate the through-hole to the adaptation with the through-hole size, and the second bolt from the dead lever below, and the tip and the horizontal part butt of the mounting bracket that the lower jaw plate is connected.

Through adopting above-mentioned technical scheme, the second bolt makes the dead lever that the lower jaw plate is connected and the angle between the mounting bracket that the lower jaw plate is connected fixed to increase the structural strength of the vertical direction of mounting bracket.

Optionally, a rigid spring is arranged between the hinged positions of the two fixed rods and the two folding rods, and two end portions of the rigid spring are respectively and fixedly connected to the hinged positions of the two fixed rods and the folding rods; the stiff spring may be made of a low manganese spring steel material.

By adopting the technical scheme, the two fixing rods are both subjected to supporting force by the rigid spring, so that the upper jaw plate and the lower jaw plate can have structural strength in the longitudinal direction through the rigid spring; compared with carbon spring steel, the low manganese spring steel has the advantages of good hardenability and high strength; and the low manganese spring steel has low price and can be used for manufacturing various small-section flat springs, round springs, spiral springs and the like.

To sum up, the application comprises the following beneficial technical effects:

1. the universal ball can rotate in the horizontal direction, and the support mechanism can realize movement in the vertical direction, so that the universal ball can be adjusted according to different requirements;

2. the rigid spring can support the upper jaw plate, the lower jaw plate and a connected mechanism, and can enable the upper jaw plate and the lower jaw plate to have certain structural strength integrally;

3. the fixing bolt can ensure that the denture framework can be directionally fixed when the angle is determined, thereby more accurately simulating the jaw bone hinge structure and analyzing the related problems of the teeth.

Drawings

Fig. 1 is a schematic view of a denture articulator structure.

Fig. 2 is a schematic view of an explosion structure inside the installation groove.

FIG. 3 is a side sectional view of the mounting slot.

In the figure, 1, a jaw plate mechanism, 11, an upper jaw plate, 12, a lower jaw plate, 13, a connecting frame, 14, a mounting groove, 15, a rotating rod, 16, a universal ball, 17, a laminating plate, 18, a fixing bolt, 2, a bracket mechanism, 21, a fixing rod, 22, a folding rod, 24, a first bolt, 25, a second bolt, 26 and a rigid spring.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses an artificial tooth articulator.

Example 1

Referring to fig. 1, a denture articulator includes a jaw plate mechanism 1 and a bracket mechanism 2.

Referring to fig. 1 and 2, the jaw plate mechanism 1 includes an upper jaw plate 11 and a lower jaw plate 12, both the upper jaw plate 11 and the lower jaw plate 12 are configured in the shape of the human oral cavity, and both the upper jaw plate 11 and the lower jaw plate 12 are configured with a dental model fixing device, so that the upper jaw plate 11 and the lower jaw plate 12 can be closely attached to the internal structure of the human oral cavity, thereby better simulating the jaw bone hinge structure and analyzing the related problems of teeth; the middle positions of the horizontal ends of the upper jaw plate 11 and the lower jaw plate 12 are respectively inserted with a connecting frame 13, the connecting frames 13 are U-shaped structures, two end parts of the connecting frames 13 are respectively and tightly inserted in the middle positions of the upper jaw plate 11 and the lower jaw plate 12 and extend into the end surfaces of the upper jaw plate 11 and the lower jaw plate 12, the connecting frames 13 enable the upper jaw plate 11 and the lower jaw plate 12 to be stable in structure in the horizontal direction, the connecting frames 13 can be constructed by adopting standard metal type materials, and the standard metal type materials have equivalent dead weight stability and anti-extrusion stability, so that the connecting frames 13 have the characteristics of level adjustment, stability, strong bearing capacity and difficult deformation; the surface of the cross rod part of the connecting frame 13 is fixedly connected with an installation groove 14, the interior of the installation groove 14 is of a square hollow structure, and the width of the end surface of the installation groove 14 is consistent with the length of the cross rod part of the connecting frame 13, so that the center position of the installation groove 14 is superposed with the center position of the cross rod of the connecting frame 13; a circular through hole is formed in the center positions of the connecting frame 13 and the mounting groove 14, a rotating rod 15 is arranged in the through hole, the rotating rod 15 is cylindrical, the rotating rod 15 penetrates through the connecting frame 13 and the mounting groove 14, the end part of the rotating rod 15 is inserted into the end surfaces of the upper jaw plate 11 and the lower jaw plate 12, the end part of the rotating rod 15 is located at the center position between the two end parts of the connecting frame 13, and the size of the rotating rod 15 is matched with the size of the through hole, so that the rotating rod 15 can rotate in the through hole in the horizontal direction, and the upper jaw plate 11 and the lower jaw plate 12 are driven to rotate in the horizontal direction (refer to fig. 3); one end of the rotating rod 15, which is far away from the upper jaw plate 11 and the lower jaw plate 12, is fixedly connected with a universal ball 16, the universal ball 16 is spherical, the universal ball 16 is arranged in the mounting groove 14, the size of the universal ball 16 is matched with the internal size of the mounting groove 14, and the universal ball 16 can control the movement of the upper jaw plate 11 and the lower jaw plate 12 in the vertical direction, so that the upper jaw plate 11 and the lower jaw plate 12 can better rotate slightly in the horizontal direction and the vertical direction, and the oral cavity mechanisms of different human bodies can be better simulated; in order to enable the universal ball 16 to be installed more stably, an attaching plate 17 is arranged outside the installation groove 14, the attaching plate 17 is U-shaped, the size of the inner peripheral surface of the attaching plate 17 is the same as that of the outer peripheral surface of the installation groove 14, the attaching plate 17 is arranged opposite to the inner space of the installation groove 14, a square closed empty groove is formed by the attaching plate 17 and the installation groove 14, and therefore the outer peripheral surface of the universal ball 16 is tightly clamped on the attaching plate 17 and the inner wall of the installation groove 14; in order to ensure that the universal ball 16 can be fixed at the position of the mounting groove 14 and the attachment plate 17 in the hollow groove when being adjusted to a proper angle, a fixing bolt 18 is arranged outside one end face of the attachment plate 17, four fixing bolts 18 are uniformly arranged on the end face of the attachment plate 17, the fixing bolts 18 penetrate through the end face of the attachment plate 17 and the side wall of the mounting groove 14 and are tightly abutted against the outer peripheral face of the universal ball 16 in the hollow groove, so that the outer peripheral face of the universal ball 16 is subjected to extrusion force in four different directions, the universal ball 16 cannot be deviated due to the self gravity of the upper jaw plate 11 and the lower jaw plate 12 at the end part, and the fixing bolt 18 can effectively fix the relative spatial positions of the attachment plate 17 and the mounting groove 14, so that the device has integrity; in the working process, the upper jaw plate 11 and the lower jaw plate 12 can be angularly adjusted by adjusting the universal ball 16, when the upper jaw plate 11 and the lower jaw plate 12 are in proper positions, the fixing bolt 18 can be screwed so that the end part of the fixing bolt 18 is tightly abutted against the inner side surface of the mounting groove 14, thereby fixing the positions of the universal ball 16 and the laminating plate 17, and when the device is disassembled, the fixing bolt 18 can be loosened so that the fixing bolt 18 is separated from the mounting groove 14 and the laminating plate 17, thereby realizing the separation of the mounting groove 14 and the laminating plate 17.

Referring to fig. 1, the support mechanism 2 includes two fixing rods 21, the fixing rods 21 are cylindrical, and one ends of the two fixing rods 21 are respectively fixedly connected to the center positions of the outer end faces of the two attaching plates 17; one ends of the two fixing rods 21, which are far away from the attaching plate 17, are hinged with folding rods 22 through hinges, the folding rods 22 are cylindrical, the folding rods 22 can be movably connected with the fixing rods 21 through the hinges, and the two folding rods 22 are arranged towards the inner parts of the upper jaw plate 11 and the lower jaw plate 12; the end part of the folding rod 22, which is far away from the fixed rod 21, is fixedly connected with an installation frame, the installation frame is U-shaped, the central position of the transverse part of the installation frame is fixedly connected with the end part of the folding rod 22, the size of the installation frame connected with the upper jaw plate 11 is larger than that of the installation frame connected with the lower jaw plate 12, so that the inner end surface of the U-shaped structure of the installation frame connected with the upper jaw plate 11 can be abutted against the outer end surface of the U-shaped structure of the installation frame connected with the lower jaw plate 12 and are hinged with each other through a hinge piece, the upper jaw plate 11 and the lower jaw plate 12 can be movably connected through the installation frame, and the installation frame is arranged in the inner directions of the upper jaw plate 11 and the lower jaw plate 12 along with the folding rod 22; in order to increase the structural strength of the mounting frame in the vertical direction and prevent the upper jaw plate 11 and the lower jaw plate 12 from being fixed in position by the mounting frame, a through hole is formed in the transverse part of the mounting frame connected with the upper jaw plate 11 in the vertical direction, an internal thread is arranged in the through hole, a first bolt 24 matched with the size of the through hole is arranged at the position of the through hole, the first bolt 24 penetrates through the through hole from the lower part of the mounting frame and is connected with the through hole in a threaded manner, and the end part of the first bolt 24 is abutted against the outer peripheral surface of the fixing rod 21, so that the angle between the fixing rod 21 connected with the upper jaw plate 11 and the mounting frame connected with the upper jaw plate 11 is fixed, and the structural integrity of the fixing rod 21 and the mounting frame is increased; the end surface of the fixed rod 21 connected with the lower jaw plate 12, which deviates from the direction of the mounting rack, is provided with a through hole along the vertical direction, the through hole is internally provided with an internal thread, the through hole is provided with a second bolt 25, the second bolt 25 is matched with the through hole in the size direction, and the second bolt 25 is inserted into the through hole from the lower part of the fixed rod 21, and the end part is abutted with the transverse part of the mounting frame connected with the lower jaw plate 12, so that the angle between the fixing rod 21 connected with the lower jaw plate 12 and the mounting rack connected with the lower jaw plate 12 is fixed, the first bolt 24 and the second bolt 25 have the same size and are positioned in the same plane in the vertical direction, in the working state, the proper angle can be adjusted by the hinge joint between the fixed rod 21 and the mounting rack, and the upper jaw plate 11 and the lower jaw plate 12 are fixed in angle to the mounting frame respectively by tightening the first bolt 24 and the second bolt 25, so that the upper jaw plate 11 and the lower jaw plate 12 can rotate up and down through the hinge piece between the two mounting frames; a rigid spring 26 is arranged between the hinged parts of the two fixed rods 21 and the two folding rods 22, two end parts of the rigid spring 26 are respectively and fixedly connected to the hinged parts of the two fixed rods 21 and the folding rods 22, and the rigid spring 26 enables the two fixed rods 21 to be subjected to supporting force, so that the upper jaw plate 11 and the lower jaw plate 12 can have structural strength in the longitudinal direction through the rigid spring 26; the stiff spring 26 may be made of a low manganese spring steel material, which has the advantages of good hardenability and high strength compared to carbon spring steel; the low manganese spring steel has low price and can be used for manufacturing various small-section flat springs, round springs, spiral springs and the like; in the operation process, the upper jaw plate 11 and the lower jaw plate 12 can be controlled to move oppositely or oppositely under the action of the spring by the extension and contraction of the rigid spring 26, so that the denture articulator has certain elasticity and can be tightly attached to the internal structure of the oral cavity of a human body, and the problems in the oral cavity can be more finely shown.

The implementation principle of the denture articulator in the embodiment of the application is as follows: in the working process, the angles of the upper jaw plate 11 and the lower jaw plate 12 in the horizontal direction can be slightly adjusted through the universal ball 16, and the upper jaw plate 11 and the lower jaw plate 12 are fixed through the fixing bolt 16 after the angles are determined, so that the upper jaw plate 11 and the lower jaw plate 12 are closer to the oral structure of a human body, and the problems of teeth and the occlusion condition can be analyzed more intuitively; meanwhile, the distance between the upper jaw plate 11 and the lower jaw plate 12 in the vertical direction can be adjusted by adjusting the height of the mounting frame, and after the height is adjusted to a proper height, the mounting frame and the fixing rod 21 can be fixed at the relative positions by screwing the first bolt 24 and the second bolt 25, so that the denture articulator can be adjusted in the vertical direction and the horizontal direction.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a denture articulator, includes jaw plate mechanism (1) and gimbal mechanism (2), its characterized in that: jaw plate mechanism (1) includes maxilla board (11), mandible board (12), link (13) and dwang (15), the horizontal pole partial surface rigid coupling of link (13) has mounting groove (14), dwang (15) deviate from maxilla board (11) with the one end rigid coupling of mandible board (12) has a universal ball (16), universal ball (16) are spherical, just universal ball (16) set up in the inside of mounting groove (14), the size of universal ball (16) with the inside dimension looks adaptation of mounting groove (14), mounting groove (14) outside is provided with attaching plate (17), attaching plate (17) are the U type, just attaching plate (17) inner peripheral surface size with mounting groove (14) outer peripheral surface size is the same, attaching plate (17) with the inside space of mounting groove (14) sets up relatively, an end face outside of attaching plate (17) is provided with fixing bolt (18), fixing bolt (18) are provided with four, and evenly set up in the terminal surface of attaching plate (17), fixing bolt (18) wear to locate the terminal surface of attaching plate (17) with the lateral wall of mounting groove (14) to in the dead slot inside with the inseparable butt of outer peripheral face of universal ball (16).

2. The denture articulator of claim 1, wherein: the horizontal end middle position of the upper jaw plate (11) and the lower jaw plate (12) is all plugged with a connecting frame (13), the connecting frame (13) is of a U-shaped structure, two end parts of the connecting frame (13) are all tightly plugged in the middle positions of the upper jaw plate (11) and the lower jaw plate (12) and go deep into the upper jaw plate (11) and the inner part of the end surface of the lower jaw plate (12), and the connecting frame (13) can be constructed by adopting a standard metal type material.

3. The denture articulator of claim 1, wherein: the interior of the mounting groove (14) is of a square hollow structure, and the width of the end face of the mounting groove (14) is consistent with the length of the cross rod part of the connecting frame (13), so that the center position of the mounting groove (14) is overlapped with the center position of the cross rod of the connecting frame (13).

4. The denture articulator of claim 1, wherein: dwang (15) wear to locate link (13) with the central point of mounting groove (14) puts, dwang (15) are cylindrical, the tip of dwang (15) peg graft in upper jaw board (11) with inside lower jaw board (12) terminal surface, the tip of dwang (15) is located central point between two tip of link (13) puts.

5. The denture articulator of claim 1, wherein: the bracket mechanism (2) comprises two fixing rods (21), and one ends of the two fixing rods (21) are fixedly connected with the center positions of the outer end faces of the two attaching plates (17) respectively; one ends of the two fixing rods (21) departing from the attaching plate (17) are hinged to folding rods (22) through hinges, the folding rods (22) can be movably connected with the fixing rods (21) through the hinges, and the two folding rods (22) are arranged towards the inner parts of the upper jaw plate (11) and the lower jaw plate (12); folding rod (22) deviate from the tip rigid coupling of dead lever (21) has the mounting bracket, the mounting bracket is the U type, just the horizontal partial central point of mounting bracket put with folding rod (22) tip rigid coupling.

6. The denture articulator of claim 5, wherein: the up jaw (11) is connected the horizontal part of mounting bracket is provided with the through-hole in vertical direction, is provided with the internal thread in the through-hole, and through-hole department is provided with first bolt (24) with through-hole size looks adaptation, first bolt (24) are followed during the through-hole is worn to locate by the mounting bracket below, and with through-hole threaded connection, just the tip of first bolt (24) with the outer peripheral face butt of dead lever (21).

7. The denture articulator of claim 6, wherein: a through hole is formed in the end face, deviating from the mounting frame direction, of the fixing rod (21) connected with the lower jaw plate (12) along the vertical direction, an internal thread is arranged in the through hole, a second bolt (25) is arranged at the position of the through hole, the second bolt (25) is matched with the through hole in the size direction, the second bolt (25) penetrates through the through hole from the lower portion of the fixing rod (21), and the end portion of the second bolt is abutted to the transverse portion of the mounting frame connected with the lower jaw plate (12); the first bolt (24) and the second bolt (25) are the same size and are located in the same plane in the vertical direction.

8. The denture articulator of claim 5, wherein: a rigid spring (26) is arranged between the hinged parts of the two fixed rods (21) and the two folding rods (22), and two end parts of the rigid spring (26) are respectively and fixedly connected to the hinged parts of the two fixed rods (21) and the folding rods (22); the stiff spring (26) may be made of a low manganese spring steel material.