A hardness testing device for denture materials

Abstract

The present invention relates to the technical field of hardness detection of denture materials, and discloses a hardness detection device for denture materials, comprising an operating platform, a sensor for detecting the magnitude of applied force value is installed on the upper side of the operating platform, a support plate is installed on the upper side of the operating platform, a connecting block is installed on the side of the support plate, a hydraulic cylinder is installed on the bottom side of the connecting block, a pressing block seat for squeezing denture materials is installed on the movable end of the hydraulic cylinder, a supporting platform for placing denture materials is installed on the upper side of the operating platform, and the supporting platform is correspondingly arranged on the bottom side of the pressing block seat; the pressing block seat comprises a sleeve installed on the movable end of the hydraulic cylinder, and a first pressing block, a second pressing block and a third pressing block installed inside the sleeve, and the first pressing block, the second pressing block and the third pressing block sequentially squeeze the denture material during the detection process. The support column provides an additional supporting structure, enhances the stability of the connecting block, reduces its movement and shaking under the action of hydraulic pressure, and makes the detection process more stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of hardness detection of denture materials, and in particular to a hardness detection device for denture materials. Background Art

[0002] Dentures are artificial tooth substitutes used to replace missing natural teeth. They are usually used to improve oral function and aesthetics, allowing patients to chew food normally, maintain facial structure stability, and improve speech ability; denture materials are usually divided into acrylic resin, nylon resin, metal alloy, and ceramic materials;

[0003] The hardness testing devices for denture materials are usually devices specifically used to measure the hardness of denture materials. These devices can help evaluate the hardness characteristics of different materials to ensure that the selected materials meet the design requirements and usage needs. Hardness testing is important in the denture manufacturing process because it affects the durability, comfort and functionality of the denture. Common testing methods include Rockwell hardness testing and Vickers hardness testing, and the specific choice depends on the characteristics of the material and the manufacturing standards.

[0004] At present, in the process of hardness testing of denture materials, the denture materials are usually squeezed directly using hydraulic cylinders. However, since the denture may suddenly break during the squeezing process, the hydraulic system may not be able to adjust or control the pressure in time, and the squeezing force may suddenly decrease or become uneven, which may cause the hydraulic cylinder to lose stability. Therefore, it does not meet the existing needs. We propose a hardness testing device for denture materials. Summary of the invention

[0005] The present invention provides a hardness detection device for denture materials, which has the beneficial effect of solving the problem mentioned in the above background technology that in the process of hardness detection of denture materials, the denture materials are usually directly squeezed by a hydraulic cylinder. However, since the denture may suddenly break during the squeezing process, the hydraulic system may not be able to adjust or control the pressure in time, and the squeezing force may suddenly decrease or become uneven, which may cause the hydraulic cylinder to lose stability in operation.

[0006] The present invention provides the following technical solution: a hardness detection device for denture materials, comprising an operating platform, a sensor for detecting the magnitude of applied force is installed on the upper side of the operating platform, a support plate is installed on the upper side of the operating platform, a connecting block is installed on the side of the support plate, a hydraulic cylinder is installed on the bottom side of the connecting block, a pressing block seat for squeezing denture materials is installed on the movable end of the hydraulic cylinder, a supporting platform for placing denture materials is installed on the upper side of the operating platform, and the supporting platform is correspondingly arranged on the bottom side of the pressing block seat;

[0007] The pressing block seat includes a sleeve installed at the movable end of the hydraulic cylinder, and a first pressing block, a second pressing block and a third pressing block installed inside the sleeve. The first pressing block, the second pressing block and the third pressing block press the denture material in sequence during the detection process.

[0008] As an optional solution of the hardness detection device for denture materials described in the present invention, a connecting platform is installed on the upper side of the operating platform, a supporting column is installed between the connecting platform and the connecting block, and a connecting sleeve is installed on the side of the connecting platform for reinforcing the stability of the supporting platform.

[0009] As an optional solution of the hardness detection device for denture materials described in the present invention, the first pressure block is fixedly installed inside the sleeve, the second pressure block is movably arranged inside the first pressure block, and the third pressure block is movably arranged inside the second pressure block. A rotating motor is installed between the first pressure block and the sleeve, and a rotating rod is coaxially installed on the output shaft of the rotating motor, and the rotating rod extends to the inside of the third pressure block.

[0010] As an optional solution of the hardness detection device for denture materials described in the present invention, wherein: a docking thread section is provided on the surface of the rotating rod, the second pressure block is slidably fitted on the surface of the rotating rod, a first sliding groove is symmetrically provided inside the first pressure block, a first sliding column slidably fitted with the first sliding groove is symmetrically installed on the side of the second pressure block, and a connecting ring for limiting the movable range of the second pressure block is installed on the side of the rotating rod.

[0011] As an optional solution of the hardness detection device for denture materials described in the present invention, the second pressing block is symmetrically provided with a second sliding groove, the side of the third pressing block is symmetrically installed with a second sliding column that slides with the second sliding groove, the surface of the rotating rod is provided with a first threaded section, the surface of the rotating rod is slidably engaged with a sliding ring through the first threaded section, the surface of the sliding ring is provided with a second threaded section, and a driving block is installed inside the third pressing block, and the driving block slides with the side of the sliding ring.

[0012] As an optional solution of a hardness detection device for denture materials described in the present invention, protective plates are symmetrically installed on both sides of the support plate, the cross-sectional shape of the protective plates is set to be L-shaped, a docking plate is installed on the front side of the support plate, a first docking column and a second docking column are installed between the docking plate and the support plate, a sliding groove is opened on the side of the support plate, and a sliding column is installed on the side of the protective plate, and the sliding column slidably cooperates with the sliding groove.

[0013] As an optional solution of a hardness detection device for denture materials described in the present invention, a movable plate is installed between the support plate and the docking plate, a first track groove and a second track groove are opened on the surface of the movable plate, the first docking column slides with the first track groove, the second docking column slides with the second track groove, and one end of the movable plate is fixedly connected to the protective plate.

[0014] As an optional solution of the hardness testing device for denture materials described in the present invention, a connecting seat is installed on the upper side of the protective plate, and a first traction rope is installed between the connecting seat and the sleeve. During the descent of the sleeve, the first traction rope is in a tightened state, and after the sleeve rises, the first traction rope is in a loose state.

[0015] As an optional solution of a hardness detection device for denture materials described in the present invention, a connecting rod is installed on the side of the sleeve, the end of the connecting rod movably passes through the support plate, and a rack is installed on the end of the connecting rod, a rotating gear is rotatable on the side of the support plate, and the rack is meshed with the rotating gear.

[0016] As an optional solution of the hardness detection device for denture materials described in the present invention, wherein: the side of the support plate is symmetrically installed with protrusions, a driving rod is rotatably installed inside the protrusion, both ends of the driving rod are respectively installed with winding disks, a second traction rope is installed between the winding disk and the protective plate, and a driving gear is installed on the outer side of the driving rod, and the driving gear is meshed with the rotating gear.

[0017] The present invention has the following beneficial effects:

[0018] 1. The hardness testing device for denture materials, during testing, the operator places the denture material on the surface of the support platform, and the hydraulic cylinder drives the pressure block seat to press down, so that the pressure block seat contacts the surface of the denture material. At the same time, the pressure block seat continues to squeeze the denture material until the denture material cracks. After the denture material cracks, the sensor reads the pressure applied by the hydraulic cylinder on the pressure block seat and the time of the pressure applied by the hydraulic cylinder in real time to determine whether the denture material meets the preset qualification standard; by installing the support column between the connecting platform and the connecting block, the support column provides an additional support structure, enhances the stability of the connecting block, reduces its movement and shaking under the action of hydraulic pressure, and makes the testing process more stable and reliable.

[0019] 2. The hardness detection device for denture materials realizes the compression of the denture materials under different states by the cooperation of the hydraulic cylinder, the sleeve, the rotating motor and the rotating rod, so that the first pressing block, the second pressing block and the third pressing block can be made to compress the denture materials by means of the cooperation of the hydraulic cylinder, the sleeve, the rotating motor and the rotating rod, so that the detection is more comprehensive and the state of teeth chewing food of different sizes can be simulated at the same time; the first pressing block, the second pressing block and the third pressing block are made to compress the denture materials at the same level by the cooperation of the docking threaded section between the second pressing block and the surface of the rotating rod, so that the second pressing block and the third pressing block can compress the denture materials separately, and the driving block and the sliding ring inside the third pressing block can compress the denture materials separately, and the force-bearing area of ​​the denture materials is gradually reduced by the different contacts between the first pressing block, the second pressing block and the third pressing block and the denture materials, so as to realize the compression of the denture materials with the same force and different pressures, thereby simulating the different pressures caused by teeth chewing different foods, realizing the diversity of the detection data and improving the accuracy and reliability of the detection data at the same time.

[0020] 3. The hardness detection device for denture materials, when the movable end of the hydraulic cylinder is extended and retracted, the sleeve uses the traction rope to pull the protective plate. When the protective plate moves, the first track groove and the second track groove opened on the surface of the movable plate and the first docking column and the second docking column cooperate to realize the flipping and downward movement of the protective plate during the movement, so that the two protective plates are opposite to each other, and the two protective plates can correspondingly enclose the outer side of the support platform, effectively enclosing possible splashing debris inside the protective plate, and minimizing scratches to the operator; the descent of the movable end of the hydraulic cylinder can not only detect the hardness of the denture material, but also reduce the splashing of fragments of the denture material, thereby improving the safety of operation as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the closed structure of the protective plate of the present invention.

[0023] Figure 3 It is a schematic diagram of the matching structure of the slide groove and the slide post of the present invention.

[0024] Figure 4 It is a schematic diagram of the side structure of the support plate of the present invention.

[0025] Figure 5 It is a schematic diagram of the vertical structure of the movable plate of the present invention.

[0026] Figure 6 It is a schematic diagram of the transverse structure of the movable plate of the present invention.

[0027] Figure 7It is a schematic diagram of the flipping structure of the movable plate of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the flipping process of the movable plate of the present invention.

[0029] Fig. 9 It is a schematic diagram of the half-section structure of the sleeve of the present invention.

[0030] Fig.10 It is a schematic diagram of the cross-sectional structure of the sleeve of the present invention.

[0031] Fig.11 It is a schematic diagram of the second pressing block descending structure of the present invention.

[0032] Fig.12 It is a schematic diagram of the third pressing block descending structure of the present invention.

[0033] In the figure: 110, operating platform; 111, sensor; 120, support plate; 121, connecting block; 122, hydraulic cylinder; 130, pressing block seat; 131, first pressing block; 132, second pressing block; 133, third pressing block; 134, sleeve; 135, rotating motor; 140, supporting platform; 150, connecting platform; 151, supporting column; 152, connecting sleeve; 160, rotating rod; 161, connecting thread section; 162, first sliding groove; 163, first sliding column; 164, connecting ring; 165, second sliding groove; 170, second sliding column; 17 1. First thread segment; 172. Sliding ring; 173. Second thread segment; 174. Driving block; 180. Protective plate; 181. Docking plate; 182. First docking column; 183. Second docking column; 190. Movable plate; 191. First track groove; 192. Second track groove; 210. Connecting seat; 211. First traction rope; 212. Connecting rod; 220. Rack; 221. Rotating gear; 222. Protrusion; 223. Driving rod; 230. Winding reel; 231. Second traction rope; 232. Driving gear; 240. Slide groove; 241. Slide column. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1 - Fig.12, a hardness detection device for denture materials, comprising an operating platform 110, a sensor 111 for detecting the magnitude of applied force is installed on the upper side of the operating platform 110, a support plate 120 is installed on the upper side of the operating platform 110, a connecting block 121 is installed on the side of the support plate 120, a hydraulic cylinder 122 is installed on the bottom side of the connecting block 121, a pressing block seat 130 for squeezing the denture material is installed on the movable end of the hydraulic cylinder 122, a supporting platform 140 for placing the denture material is installed on the upper side of the operating platform 110, the supporting platform 140 is correspondingly arranged on the bottom side of the pressing block seat 130, the sensor 111 is electrically connected to the hydraulic cylinder 122 through a wire, the sensor 111 is a common technology, the sensor 111 is usually composed of a sensing element, a signal processing circuit, an output interface, a connector, etc., the sensor 111 is used in this embodiment to detect the pressure and time applied by the hydraulic cylinder 122 to the denture material, and whether the denture material is qualified is determined by the data of the sensor 111, the sensor 111 is a common device in the field, and its working principle and specific model are not repeated in this scheme;

[0036] See Figure 1 , Figure 3 During the specific implementation, the operator places the denture material on the surface of the support platform 140. After placing the denture material, the hydraulic cylinder 122 drives the pressure block seat 130 to press down, so that the pressure block seat 130 contacts the surface of the denture material. At the same time, the pressure block seat 130 continues to squeeze the denture material to achieve hardness testing.

[0037] See Figure 1 , Figure 3 In a specific implementation, a connecting platform 150 is installed on the upper side of the operating platform 110, and a supporting column 151 is installed between the connecting platform 150 and the connecting block 121 to reduce the movement and shaking caused by the pressure exerted by the hydraulic cylinder 122 installed on the bottom side of the connecting block 121 on the denture material. A connecting sleeve 152 for reinforcing the stability of the support platform 140 is installed on the side of the connecting platform 150 to minimize the pressure exerted by the hydraulic cylinder 122 on the denture material and the shaking of the support platform 140, thereby improving the stability of the support platform 140.

[0038] Embodiment 2: This embodiment aims to promote the solution of the traditional detection method of directly squeezing the denture material through the movable end of the hydraulic cylinder to break the denture material, thereby obtaining the detection data; however, in general, when people chew food, the bite force of the teeth will not change much, so the pressure brought by the teeth chewing different sizes of food is also different. Since most of the force areas for squeezing the denture material are fixed, the detection is relatively simple and cannot simulate the problem of the diversity of teeth chewing food. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 - Fig.12The pressing block seat 130 includes a sleeve 134 installed at the movable end of the hydraulic cylinder 122, and a first pressing block 131, a second pressing block 132 and a third pressing block 133 installed inside the sleeve 134. The first pressing block 131, the second pressing block 132 and the third pressing block 133 press the denture material in turn during the detection process.

[0039] See Figure 1 , Figure 3 and Fig. 9 In specific implementation, the movable end of the hydraulic cylinder 122 drives the sleeve 134 to extrude the denture material. At this time, the bottom sides of the first pressing block 131, the second pressing block 132 and the third pressing block 133 are at the same level, which means that the force area of ​​the denture material being extruded is the largest at this time.

[0040] See Figure 1 , Figure 3 and Fig. 9 The first pressure block 131 is fixedly installed inside the sleeve 134, the second pressure block 132 is movably arranged inside the first pressure block 131, and the third pressure block 133 is movably arranged inside the second pressure block 132. A rotating motor 135 is installed between the first pressure block 131 and the sleeve 134, and a rotating rod 160 is coaxially installed on the output shaft of the rotating motor 135, and the rotating rod 160 extends to the inside of the third pressure block 133.

[0041] See Figure 1 , Figure 3 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 A docking thread section 161 is provided on the surface of the rotating rod 160, and the second pressure block 132 is slidably fitted on the surface of the rotating rod 160 through the docking thread section 161. A first sliding groove 162 is symmetrically provided inside the first pressure block 131, and a first sliding column 163 that slides with the first sliding groove 162 is symmetrically installed on the side of the second pressure block 132. A connecting ring 164 for limiting the descent of the second pressure block 132 is installed on the side of the rotating rod 160.

[0042] See Fig.12 In a specific implementation, the connecting ring 164 is fixedly mounted on the surface of the rotating rod 160. Moreover, the second pressing block 132 is arranged adjacent to the upper side of the connecting ring 164. During the rotation of the rotating rod 160, the second pressing block 132 slides on the surface of the rotating rod 160 by utilizing the cooperation between the docking threaded section 161 and the second pressing block 132. During the sliding process, the second pressing block 132 reaches the upper side of the connecting ring 164. During the continuous rotation of the rotating rod 160, the second pressing block 132 is restricted from moving downward by the setting of the connecting ring 164, thereby preventing the second pressing block 132 from continuing to slide down together with the third pressing block 133 and affecting the independent extension of the third pressing block 133.

[0043] See Figure 1 , Figure 3 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 In a specific implementation, the denture material is squeezed and a certain force is applied when the bottom sides of the first pressing block 131, the second pressing block 132 and the third pressing block 133 are at the same level. When the denture material is broken, the detection stops. On the contrary, when the denture material is not broken within a certain time range, the movable end of the hydraulic cylinder 122 moves upward. At the same time, the rotating motor 135 is started. The output shaft of the rotating motor 135 drives the rotating rod 160 to rotate. Therefore, the second pressing block 132 cooperates with the docking threaded section 161, so that the second pressing block 132 slides downward on the surface of the rotating rod 160, and the second pressing block When the second pressure block 132 slides downward, it drives the third pressure block 133 to move synchronously. After the bottom ends of the second pressure block 132 and the third pressure block 133 are no longer at the same level as the first pressure block 131, the movable end of the hydraulic cylinder 122 continues to drive the sleeve 134 to press down, but at this time only the second pressure block 132 and the third pressure block 133 squeeze the surface of the denture material, so that when the hydraulic cylinder 122 applies the same force, the force area on the surface of the denture material is reduced, and the pressure is increased at the same time; if the denture material is broken within a certain time range, the detection is stopped, otherwise, if the denture material is not broken within a certain time range, the detection is continued.

[0044] A second sliding groove 165 is symmetrically provided inside the second pressing block 132, and a second sliding column 170 that slides with the second sliding groove 165 is symmetrically installed on the side of the third pressing block 133. A first threaded section 171 is provided on the surface of the rotating rod 160, and a sliding ring 172 is slidably engaged with the first threaded section 171 on the surface of the rotating rod 160, and a second threaded section 173 is provided on the surface of the sliding ring 172. A driving block 174 is installed inside the third pressing block 133, and the driving block 174 slides inside the third pressing block 133 through the cooperation of the second threaded section 173.

[0045] See Figure 1 , Figure 3 , Fig. 9 , Fig.10 , Fig.11 and Fig.12, in specific implementation, when the denture material is not broken after the second extrusion of the denture material, the movable end of the hydraulic cylinder 122 retracts, and at the same time, the sliding ring 172 cooperates with the first threaded section 171 on the surface of the rotating rod 160, so that the sliding ring 172 slides down on the surface of the rotating rod 160, and when the sliding ring 172 slides to a certain distance, the second threaded section 173 on the surface of the sliding ring 172 cooperates with the driving block 174 installed inside the third pressing block 133, so that the third pressing block 133 descends by utilizing the cooperation between the driving block 174 and the sliding ring 172, so that the bottom end of the third pressing block 133 extends out of the second pressing block 132, and when the third pressing block 133 and the second pressing block 132 are not at the same level, the hydraulic cylinder 122 continues to descend, but at this time only the third pressing block 133 squeezes the surface of the denture material, so that when the hydraulic cylinder 122 applies the same force, the force area on the surface of the denture material is reduced again, accompanied by an increase in pressure;

[0046] If the denture material breaks within a certain time range, the detection stops. On the contrary, if the denture material does not break within a certain time range, a greater pressure is applied and a new round of detection is started until the denture material breaks and the detection stops. By adjusting the contact area between the bottom side of the pressure block seat 130 and the denture material, the same force and different pressures can be used to squeeze the denture material, thereby achieving diversity in the detection data and improving the accuracy and reliability of the detection data.

[0047] Embodiment 3: This embodiment is intended to promote the solution of the problem that due to the high hardness of the denture material, when the denture material is broken under stress, the fragments of the denture material may splash out and scratch the operator. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1 - Fig.12 , protective plates 180 are symmetrically installed on both sides of the support plate 120, and the cross-sectional shape of the protective plate 180 is set to be L-shaped. A docking plate 181 is installed on the front side of the support plate 120, and a first docking column 182 and a second docking column 183 are installed between the docking plate 181 and the support plate 120. A sliding groove 240 is opened on the side of the support plate 120, and a sliding column 241 is installed on the side of the protective plate 180, and the sliding column 241 slides with the sliding groove 240.

[0048] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8A movable plate 190 is installed between the support plate 120 and the docking plate 181, one end of the movable plate 190 is fixedly connected to the protective plate 180, a first track groove 191 and a second track groove 192 are opened on the surface of the movable plate 190, the first docking column 182 slides with the first track groove 191, the second docking column 183 slides with the second track groove 192, one end of the movable plate 190 is fixedly connected to the protective plate 180; a connecting seat 210 is installed on the upper side of the protective plate 180, a first traction rope 211 is installed between the connecting seat 210 and the sleeve 134, the first traction rope 211 is in a tightened state during the descent of the sleeve 134, and the first traction rope 211 is in a loose state after the sleeve 134 rises.

[0049] A connecting rod 212 is installed on the side of the sleeve 134, and the end of the connecting rod 212 movably penetrates the support plate 120, and a rack 220 is installed on the end of the connecting rod 212. A rotating gear 221 is rotatably installed on the side of the support plate 120, and the rack 220 is meshed with the rotating gear 221. A convex block 222 is symmetrically installed on the side of the support plate 120, and a driving rod 223 is rotatably installed inside the convex block 222. A winding disk 230 is installed at both ends of the driving rod 223, and a second traction rope 231 is installed between the winding disk 230 and the protective plate 180. A driving gear 232 is installed on the outside of the driving rod 223, and the driving gear 232 is meshed with the rotating gear 221.

[0050] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In specific implementation, when the movable end of the hydraulic cylinder 122 descends, the connecting rod 212 is installed on the side of the sleeve 134, so that the connecting rod 212 and the sleeve 134 move in the same direction. During the reciprocating movement of the sleeve 134, the rack 220 is meshed with the rotating gear 221, and the rotating gear 221 is meshed with the driving gear 232 during the rotation. At the same time, the driving gear 232 rotates coaxially with the driving rod 223, so that the driving rod 223 drives the winding drum 230 to rotate during the rotation. When the hydraulic cylinder 122 descends, the winding drum 230 pays out the second traction rope 231, and when the hydraulic cylinder 122 rises, the winding drum 230 reels the second traction rope 231; when the winding drum 230 reels the second traction rope 231, the winding drum 230 uses the second traction rope 231 to reset the protective plate 180.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hardness detection device for denture materials, comprising an operating platform (110), wherein a sensor (111) for detecting a force value is installed on the upper side of the operating platform (110), characterized in that: A support plate (120) is installed on the upper side of the operating platform (110), a connecting block (121) is installed on the side of the support plate (120), a hydraulic cylinder (122) is installed on the bottom side of the connecting block (121), a pressing block seat (130) for pressing the denture material is installed on the movable end of the hydraulic cylinder (122), a support platform (140) for placing the denture material is installed on the upper side of the operating platform (110), and the support platform (140) is correspondingly arranged on the bottom side of the pressing block seat (130); The pressing block seat (130) comprises a sleeve (134) mounted on the movable end of the hydraulic cylinder (122), and a first pressing block (131), a second pressing block (132) and a third pressing block (133) mounted inside the sleeve (134), wherein the first pressing block (131), the second pressing block (132) and the third pressing block (133) sequentially press the denture material during the detection process; The first pressing block (131) is fixedly mounted inside the sleeve (134), the second pressing block (132) is movably mounted inside the first pressing block (131), and the third pressing block (133) is movably mounted inside the second pressing block (132); a rotating motor (135) is mounted between the first pressing block (131) and the sleeve (134), a rotating rod (160) is coaxially mounted on the output shaft of the rotating motor (135), and the rotating rod (160) extends into the third pressing block (133); The surface of the rotating rod (160) is provided with a docking thread section (161), the second pressing block (132) is slidably fitted on the surface of the rotating rod (160), a first sliding groove (162) is symmetrically provided inside the first pressing block (131), a first sliding column (163) slidably fitted with the first sliding groove (162) is symmetrically installed on the side of the second pressing block (132), and a connecting ring (164) for limiting the range of movement of the second pressing block (132) is installed on the side of the rotating rod (160); A second sliding groove (165) is symmetrically provided inside the second pressing block (132); a second sliding column (170) slidably matched with the second sliding groove (165) is symmetrically installed on the side of the third pressing block (133); a first threaded section (171) is provided on the surface of the rotating rod (160); a sliding ring (172) is slidably matched with the surface of the rotating rod (160) through the first threaded section (171); a second threaded section (173) is provided on the surface of the sliding ring (172); a driving block (174) is installed inside the third pressing block (133); the driving block (174) is slidably matched with the side of the sliding ring (172).

2. A hardness testing device for denture materials according to claim 1, characterized in that: A connecting platform (150) is installed on the upper side of the operating platform (110), a supporting column (151) is installed between the connecting platform (150) and the connecting block (121), and a connecting sleeve (152) for reinforcing the stability of the supporting platform (140) is installed on the side of the connecting platform (150).

3. A hardness testing device for denture materials according to claim 1, characterized in that: Protective plates (180) are symmetrically mounted on both sides of the support plate (120); the cross-sectional shape of the protective plate (180) is set to be L-shaped; a docking plate (181) is mounted on the front side of the support plate (120); a first docking column (182) and a second docking column (183) are mounted between the docking plate (181) and the support plate (120); a sliding groove (240) is opened on the side of the support plate (120); a sliding column (241) is mounted on the side of the protective plate (180); and the sliding column (241) is slidably matched with the sliding groove (240).

4. A hardness testing device for denture materials according to claim 3, characterized in that: A movable plate (190) is installed between the support plate (120) and the docking plate (181); a first track groove (191) and a second track groove (192) are provided on the surface of the movable plate (190); the first docking column (182) is slidably matched with the first track groove (191); the second docking column (183) is slidably matched with the second track groove (192); and one end of the movable plate (190) is fixedly connected to the protective plate (180).

5. The hardness testing device for denture materials according to claim 3, characterized in that: A connecting seat (210) is installed on the upper side of the protective plate (180), and a first traction rope (211) is installed between the connecting seat (210) and the sleeve (134). When the sleeve (134) descends, the first traction rope (211) is in a tightened state, and when the sleeve (134) rises, the first traction rope (211) is in a loosened state.

6. The hardness testing device for denture materials according to claim 3, characterized in that: A connecting rod (212) is installed on the side of the sleeve (134), the end of the connecting rod (212) movably passes through the support plate (120), and a rack (220) is installed on the end of the connecting rod (212), a rotating gear (221) is rotatably provided on the side of the support plate (120), and the rack (220) is meshed with the rotating gear (221).

7. A hardness testing device for denture materials according to claim 6, characterized in that: The support plate (120) is symmetrically provided with a protrusion (222) on the side thereof, a driving rod (223) is rotatably provided inside the protrusion (222), a winding disk (230) is respectively provided at both ends of the driving rod (223), a second traction rope (231) is provided between the winding disk (230) and the protective plate (180), a driving gear (232) is provided on the outside of the driving rod (223), and the driving gear (232) is meshed with the rotating gear (221).

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