CN110376097A - Multifunctional oral cavity Material Testing Machine - Google Patents

Abstract

The present invention provides a kind of multifunctional oral cavity Material Testing Machine, and which solve following technical problems present in existing oral cavity material evaluation test: test device has a single function, each device can only test the single performance of homogenous material；It traces to the source difficulty, what existing test device mostly temporarily designed, without corresponding design specification, also it is difficult to trace to the source without calibrating or calibrating standard, measurement result；It is difficult to avoid that subjective impact, existing test device is mostly easy device, needs to be manually operated, it is sometimes desirable to and displacement measuring equipment, timing device etc. are used cooperatively, the influence of artificial subjective factor is difficult to avoid that.It the composite can be widely applied to the performance evaluation field of different oral cavity medical apparatus.

Description

Multifunctional oral material testing machine

technical field

The invention relates to an oral material testing machine, in particular to a multifunctional oral material testing machine.

Background technique

In my country and most other countries in the world, oral materials are managed as medical devices. In order to ensure the safety of the people, according to the regulations of the State Food and Drug Administration, medical device manufacturers must Registration testing and daily testing. Due to the variety of oral materials and different performance requirements, a variety of devices are required to complete the inspection work.

Although the detection device currently used can meet the basic detection needs, there are still many problems:

First, single function: each device can only test a single performance of a single material. Taking water-based cement as an example, the properties of the material to be evaluated include fluidity and curing time, etc. Each property requires a separate device to monitor and evaluate, and there is no unified identification specification for such devices, which is cumbersome to design and use. It is easy to cause economic and space waste;

Second, the difficulty of traceability: the most basic requirement for the performance evaluation of medical devices is the accuracy of the obtained measured values. Therefore, the devices used are required to be traceable, that is, the measured values should be able to be compared with international standard values. Since most of the devices currently in use are temporarily designed without corresponding design specifications, let alone verification or calibration specifications, it is difficult to trace the results obtained by using such devices;

Third, it is difficult to avoid subjective influences: objective and fair should be the criteria that should be followed in the performance evaluation of medical devices. However, most of the existing test devices are simple devices that require manual operation, and sometimes need to be used together with displacement measurement equipment, timing equipment, etc. , the influence of human subjective factors is unavoidable, and it is difficult to be truly objective and fair.

SUMMARY OF THE INVENTION

The present invention provides a multifunctional, traceable and objective multifunctional oral material testing machine in view of the technical problems of single function, difficulty in traceability and unavoidable subjective influence of the existing oral material testing machine.

Therefore, the technical scheme of the present invention is that a multifunctional oral material testing machine is provided with a base, a motor and a control device are installed on the base, a support and a frame are arranged above the base, and a guide rail is arranged on the frame, and the guide rail is arranged on the base. A load sensing device that can run in a straight line along the guide rail is installed on the upper part, a loading device is arranged below the load sensing device, the control device is electrically connected with the motor, and the load sensing device is electrically connected with the control device.

Preferably, the guide rail and the load sensing device are movably connected, the load sensing device and the loading device are fixedly connected, and the loading device is electrically connected to the motor.

Preferably, a loading member is detachably connected below the loading device, the loading member is provided with a pressure head, a sample and a sample container, the pressure head is installed on the loading device, the sample container is installed on the support, and the pressure head corresponds to the position of the sample container.

Preferably, the loading device is equipped with a small environment control system, and the small environment control system is provided with a constant temperature environment, a constant temperature and humidity environment and a water bath environment.

Preferably, the control device is a control device matched with the motor, and the control device is provided with a time control device, a displacement control device and a load control device.

Preferably, the motor is a linear motor or a stepping motor.

The beneficial effects of the present invention are as follows:

(1) The base provides a supporting device for the testing machine, and provides installation space for the control device and the motor. The motor provides the driving force for the testing machine. The guide rail is used as a supporting device for the motor to provide the load sensing device and the running track of the loading device. The loading device and the loading part are detachably connected, which realizes the replacement of different loading parts, improves the versatility of the device, and reduces the test cost.

(2) The loading device is equipped with a small environment control system to meet different experimental requirements. The small environment control system includes a constant temperature environment, a constant temperature and humidity environment and a water bath environment to make the tested sample in the environment required by the test;

(3) When the force is applied, the applied force value is fed back to the control device by the load sensing device for joint control, which realizes the traceability of the loading force; the built-in timing device in the control device automatically timed, and the timing automatically stopped when the experiment ended, eliminating the need for Subjective error caused by artificial control of the timer;

(4) The control device can provide three different control modes of time control, displacement control mode and load control according to different experimental requirements, so as to meet the test of various materials and various properties.

Description of drawings

Fig. 1 is the front view of the multifunctional oral material testing machine;

Figure 2 is a side view of the multifunctional oral material testing machine;

Fig. 3 is a schematic diagram of the loading part structure of a part of the composite resin flexural strength experimental device;

4 is a schematic structural diagram of a partial composite resin flexural strength experimental device;

Fig. 5 is the schematic diagram of the loading part structure of the bonding resin/cement curing time experimental device;

Fig. 6 is the structural representation of bonding resin/cement curing time experimental device;

Fig. 7 is the structural schematic diagram of the loading part of the cement film thickness/silver alloy powder creep test device;

FIG. 8 is a schematic diagram of the structure of the cement film thickness/silver alloy powder creep experiment device.

Description of symbols in the figure

1. Base; 2. Motor; 3. Control device; 4. Support; 5. Loading device; 6. Load sensing device; 7. Guide rail; 8. Frame; 9. Sample; 10. Indenter; 11. Cement Container; 12. Composite resin pressure head; 13. Composite resin container; 14. Cement fluidity pressure head.

Detailed ways

The present invention will be further described below in conjunction with the embodiments.

As shown in Figures 1 and 2, the present invention is provided with a base 1, a motor 2 and a control device 3 are installed on the base 1, a support 4 and a frame 8 are arranged above the base 1, and a guide rail 7 is arranged on the frame 8. The guide rails A load sensing device 6 is movably installed on the 7 , a loading device 5 is arranged below the load sensing device 6 , the load sensing device 6 and the loading device 5 are fixedly connected, and the loading device 5 is electrically connected to the motor 2 .

Driven by the motor 2 , the loading device 5 drives the load sensing device 6 to move in a straight line along the guide rail 7 .

The base 1 is a supporting device and provides installation space for the control device 3 and the motor 2 . The motor 2 is a linear motor or a stepping motor for providing driving force. The guide rail 7 is a matching device of the motor 2 to provide the running track of the load sensing device 6 and the loading device 5 . The loading device 5 is provided with a connecting device, which is connected with the loading member through threads or pins to realize the replacement of different loading members, and is equipped with a small environment control system to meet different experimental requirements. The small environment control system includes but is not limited to a constant temperature environment, a constant temperature and constant humidity environment and a water bath environment, so as to keep the tested sample in the environment required by the test. The load sensing device 6 is used to sense the load applied to the sample. The load sensing device 6 is a standard load sensor. The traceability of the device is realized, and the problem of difficulty in traceability of the existing device is solved. The control device 3 is a control device matched with the motor 2. It has a built-in time control device and a displacement control device. The system also contains the commonly used experimental methods for oral materials, and can provide time control, displacement control methods and load control according to different experimental requirements. Three different control methods.

As shown in Figures 5 and 6, during the curing time test of the cement, the indenter 10 whose size and structure meet the requirements of YY0271 is mounted on the loading device 5, and the cement container 11 containing the well-tuned cement is placed on the support 4. Above, the size and structure of the cement container 11 conform to the regulations of YY0271. At a specified time, the motor 2 drives the loading device 5 to move along the guide rail 7 by the load control method of the control device 3, and the driving loading device 5 drives the indenter 10 to exert a force of 3.9N on the cement sample 9 placed on the support 4. , hold for 5s, and then the loading device 5 is reset; after 10s, the loading device 5 continues to drive the indenter 10 to apply a force of 3.9N to the cement sample 9 placed on the support 4 for 5s, then the loading device 5 is reset, and the above process is repeated , the experiment ends when no new indentations are produced on the surface of cement sample 9.

When the force is applied, the applied force value is fed back to the control device 2 by the load sensing device 6 for joint control, which realizes the traceability of the loading force; the timing device built in the control device 2 automatically timed, and the timing automatically stopped when the experiment was over, eliminating the need for The timer is controlled manually, and the subjective error caused by the cooperative work with the loading device 5 is required.

A bump is provided below the composite resin container 13 , and a groove matching the bump is provided on the support 4 . The composite resin container 13 and the support 4 can also be connected by screws or pins.

The load sensing device 6 of the present invention is a standard load sensor, which can be verified or calibrated according to JJG860-2015 "Pressure Sensor (Static) Verification Regulations", which can realize the traceability of the device. The load sensing device 6 cooperates with the loading device 5 and the control device 3 to realize load control, and the loading parts of the loading device 5 can be replaced, realizing one machine with multiple functions. The control device 3 is a control device matched with the motor 2. It has a built-in time control device and a displacement control device. The system also contains the commonly used experimental methods for oral materials, which can provide time control, displacement control methods and load control according to different experimental requirements. Three different control methods effectively avoid human subjective influence.

The invention can meet the evaluation tests of many different properties in the standards of YY0271 (water-based cement), YY0462 (gypsum products), YY0715 (amalgam capsules), YY1042 (polymer-based filling, repairing and cementing materials), etc. There are three control methods of force value, displacement and time, and all three values can be traced to the source.

However, the above are only specific embodiments of the present invention, which should not limit the scope of the present invention. Therefore, the replacement of the equivalent components, or the equivalent changes and modifications made according to the scope of the patent protection of the present invention, should still belong to the scope of the present invention. The scope of the present invention is covered by the claims.

Claims (6)

1. a kind of multifunctional oral cavity Material Testing Machine is equipped with pedestal, which is characterized in that be equipped with motor, control on the pedestal Device, the pedestal top are equipped with support, rack, and the rack is equipped with guide rail, is equipped with and can do along guide rail on the guide rail The load sensing device of linear running, the load sensing device lower section are equipped with loading device, the control device and the electricity Electromechanics connection, the load sensing device are electrically connected with the control device.

2. multifunctional oral cavity Material Testing Machine according to claim 1, which is characterized in that the guide rail and the load sense Know that device is removable connection, the load sensing device is to be fixedly connected with the loading device, the loading device and institute State motor electrical connection.

3. multifunctional oral cavity Material Testing Machine according to claim 2, which is characterized in that removable below the loading device Connection loaded member is unloaded, the loaded member is equipped with pressure head, sample and sample container, and the pressure head is mounted on the loading device, The sample container is mounted on the support, and the pressure head is corresponding with the sample vessel position.

4. multifunctional oral cavity Material Testing Machine according to claim 3, which is characterized in that the loading device is equipped with small ring Border control system, the subenvironment control system are equipped with isoperibol, constant-temperature constant-humidity environment and water bath.

5. multifunctional oral cavity Material Testing Machine according to claim 4, which is characterized in that the control device be with it is described The control device of electric drilling match, the control device are equipped with time-controlling arrangement, displacement control device and contact load control apparatus.

6. multifunctional oral cavity Material Testing Machine according to claim 5, which is characterized in that the motor be linear motor or Person's stepper motor.