A method of automated testing of dental equipment

Abstract

The present application relates to the technical field of dental medical equipment test, and discloses a kind of dental equipment automated test method, applied to automated test device, comprising the following steps: S11: the automated test device is placed in test station, and the automated test device includes support, direct current motor forward and reverse controller installed on support, electric push rod electrically connected with direct current motor forward and reverse controller, switching power supply for direct current motor forward and reverse controller and electric push rod, and ship type switch for controlling the on-off of whole machine power supply.The present application drives electric push rod by direct current motor forward and reverse controller, with four-stage time sequence cycle of positive rotation A seconds, stop B seconds, reverse C seconds, stop D seconds, to replace hand to complete the whole process of foot pedal stepping down, holding, releasing and interval, since controller can independently set each section duration and automatically execute in cycle, and push rod each time extension stroke and pressing position are accurately triggered by same electric signal.

Description

Technical Field

[0001] This invention relates to the technical field of dental medical device testing, and more specifically, to an automated testing method for dental devices. Background Technology

[0002] Dental chairs and dental workbenches are among the most essential pieces of equipment in oral care. These devices are typically equipped with foot pedal controls, which dentists use to start and stop dental handpieces, scalers, light curing lamps, and other terminal instruments. The reliability and durability of the foot pedal control directly affect clinical treatment efficiency and patient safety. Therefore, the foot pedal control function must be thoroughly tested and experimented with before leaving the factory.

[0003] Currently, domestic manufacturers of dental chairs and dental workbenches generally use manual testing methods: testers repeatedly step on the workbench foot pedal to keep the equipment in working condition, observe and record the equipment's operation. Although there are common reciprocating motion mechanisms in the industrial field, some existing automated testing solutions often use cylinders combined with optical track sliders to achieve the reciprocating pressing of the foot pedal. These solutions have problems such as large size, need for external air source, high noise, and inconvenient adjustment, which are not suitable for the testing environment of dental equipment production workshops. Moreover, they consume a lot of manpower, requiring a dedicated person to continuously step on the foot pedal for each device. Taking dental workbenches as an example, a complete factory test usually requires hundreds or even thousands of steps, resulting in extremely high labor intensity and low testing efficiency. In addition, the testing time is seriously insufficient. Due to the physical strength and patience of manual operation, the duration of a single test is often only a few minutes, making it difficult to conduct long-term continuous aging tests and effectively expose intermittent failures and long-term reliability issues.

[0004] Based on the above problems, there is an urgent need for an automated testing method for dental workbench foot pedals that is compact in structure and easy to operate. Summary of the Invention

[0005] The purpose of this invention is to provide an automated testing method for dental equipment, which uses a DC motor forward and reverse controller to drive an electric push rod in a four-segment time cycle of forward rotation for A seconds, stop for B seconds, reverse rotation for C seconds, and stop for D seconds, to replace the human hand in completing the entire process of pressing, holding, releasing, and pausing the foot pedal.

[0006] This invention is implemented as follows: an automated testing method for dental equipment, applied to an automated testing device, includes the following steps: S11: Place the automated testing device at the testing station. The automated testing device includes a bracket, a DC motor forward and reverse rotation controller mounted on the bracket, an electric push rod electrically connected to the DC motor forward and reverse rotation controller, a switching power supply that powers the DC motor forward and reverse rotation controller and the electric push rod, and a rocker switch that controls the power supply of the entire machine. Place the foot pedal of the dental workbench to be tested into the positioning groove at the bottom of the bracket, so that the buffer pad at the top of the electric push rod is aligned with the center pressing point of the foot pedal. Connect the external AC power supply and turn on the rocker switch to put the automated testing device into standby mode. S12: Based on the specifications and testing requirements of the dental workbench foot pedal under test, four time parameters of the four-segment cyclic control sequence are independently set using the time adjustment knob on the DC motor forward and reverse controller panel. The four time parameters include: forward rotation time A seconds, which is the duration of the electric actuator rotating forward, extending downward and pressing the foot pedal, used to simulate the duration of manually pressing the foot pedal; first stop time B seconds, which is the interval between the electric actuator stopping and the actuator remaining in the lower pressing position, used to simulate the duration of manually maintaining the pressing state; reverse rotation time C seconds, which is the duration of the electric actuator reversing, retracting upward and releasing the foot pedal, used to simulate the duration of manually releasing the foot pedal; and second stop time D seconds, which is the interval between the electric actuator stopping and the actuator remaining in the upper release position, used to simulate the interval after manually fully releasing the foot pedal. The forward rotation time A seconds, first stop time B seconds, reverse rotation time C seconds, and second stop time D seconds are independently adjustable according to different testing scenarios to adapt to the testing requirements of different models of dental workbench foot pedals. S13: Start the DC motor forward and reverse controller. The DC motor forward and reverse controller outputs forward control signal, first stop signal, reverse control signal and second stop signal to the electric push rod in sequence according to the set four-segment cyclic control sequence, driving the electric push rod to perform reciprocating linear motion. In the forward rotation stage, the electric push rod rotates forward, causing the push rod to extend downward for A seconds. The buffer pad at the top of the push rod gradually presses the foot pedal to the working position, triggering the dental worktable to enter the working state. In the first stop stage, the electric push rod stops running for B seconds. The push rod remains in the pressed position, and the dental worktable maintains the working state. In the reverse rotation stage, the electric push rod reverses, causing the push rod to retract upward for C seconds. The buffer pad at the top of the push rod gradually releases the foot pedal to the initial position, causing the dental worktable to switch to the standby state. In the second stop stage, the electric push rod stops running for D seconds. The push rod remains in the released position, and the dental worktable maintains the standby state, forming a complete test cycle. S14: The DC motor forward and reverse controller automatically repeats the complete test cycle, driving the electric push rod to continuously perform reciprocating linear motion, simulating the manual action of repeatedly pressing and releasing the foot pedal of the dental workbench. This causes the dental workbench to automatically and cyclically alternate between working and standby states according to the set cycle sequence. During the test, the tester can observe the running status of the electric push rod and the force on the foot pedal in real time through the transparent dust covers on both sides of the support. The automated testing device runs continuously until the preset test time or number of test cycles is reached, or until the tester manually turns off the power. S15: When the test reaches the predetermined test time or number of cycles, turn off the rocker switch to cut off the power, the electric push rod stops running, and remove the foot pedal under test from the positioning groove at the bottom of the bracket to complete the test; record the running data and abnormal events during the test, including the actual running time, the actual number of cycles, and the response status of the dental workbench in each cycle.

[0007] Furthermore, a handle is installed on the top of the bracket, and the handle is fixed to the center of the top crossbeam of the bracket by bolts; the bottom of the bracket is provided with a positioning groove for accommodating and positioning the dental workbench foot pedal, and the size of the positioning groove is adapted by adding an adjustable clamp; foot pads are installed at the four corners of the bottom of the bracket, and the foot pads are fixed to the four corners of the bottom of the bracket by screws; transparent dust covers are installed on both sides of the bracket, and the transparent dust covers are connected to the bracket by hinges.

[0008] Furthermore, the DC motor forward and reverse rotation controller is mounted on the outer panel of the bracket. The panel of the DC motor forward and reverse rotation controller is provided with a time adjustment knob, which is set outward to facilitate the operator to adjust the parameters. The DC motor forward and reverse rotation controller is connected to the electric push rod through wires and is used to output forward rotation control signal, reverse rotation control signal and stop signal, and control the movement direction and timing of the electric push rod.

[0009] Furthermore, the electric push rod is vertically installed inside the upper part of the bracket. The electric push rod is fixed to the crossbeam of the bracket by bolts. The top of the electric push rod is set downwards, directly facing the center of the positioning groove at the bottom of the bracket. A buffer pad is installed on the top of the push rod. The buffer pad acts directly on the surface of the dental workbench foot pedal to protect the foot pedal surface from scratches or pressure damage. The push rod stroke and thrust of the electric linear actuator are selected according to the specifications of the foot pedal being tested, so as to cover different models of dental workbench products; After receiving the forward control signal output by the DC motor forward and reverse controller, the electric push rod moves in a forward linear motion, causing the push rod to extend downward and press against the foot pedal. After receiving the reverse control signal output by the DC motor forward and reverse controller, it moves in a reverse linear motion, causing the push rod to retract upward and release the foot pedal. This converts the rotational motion of the motor into the reciprocating linear motion of the push rod, simulating the action of manually pressing and releasing the foot pedal of the dental workbench.

[0010] Furthermore, the switching power supply is installed inside the bracket, and its input terminal is connected to an external AC power source via a rocker switch. The external AC power source is AC 110V or AC 220V. The switching power supply converts the input AC power into DC power. The output terminal of the switching power supply is connected to the DC motor forward / reverse controller and the electric push rod via wires. The rocker switch is installed on the outside of the bracket in a position easily accessible to the operator and is connected in series with the AC input terminal of the switching power supply.

[0011] Furthermore, the forward rotation time A seconds is used to simulate the duration of manually pressing the pedal, the first stop time B seconds is used to simulate the time the manual pedal is held in place, the reverse rotation time C seconds is used to simulate the duration of manually releasing the pedal, and the second stop time D seconds is used to simulate the interval after the manual pedal is completely released. The forward rotation time A seconds, the first stop time B seconds, the reverse rotation time C seconds, and the second stop time D seconds are independently adjusted according to different test scenarios, including setting the forward rotation time A seconds and the reverse rotation time C seconds to a shorter time in a scenario simulating rapid pedaling, and setting the forward rotation time A seconds to a longer time in a scenario simulating long pedaling. The DC motor forward and reverse rotation controller automatically enters the next cycle after completing the test cycle, until the preset test time or number of test cycles is reached.

[0012] Furthermore, each downward extension of the electric push rod presses the foot pedal into the working position, triggering the dental worktable to enter the working state, causing the dental handpiece to rotate, the scaler to vibrate, or the light curing lamp to light up; each upward retraction of the electric push rod releases the foot pedal to the initial position, switching the dental worktable to standby mode, stopping the dental handpiece from rotating, stopping the scaler from vibrating, or turning off the light curing lamp; through the precise control of the forward rotation time A seconds, the first stop time B seconds, the reverse rotation time C seconds, and the second stop time D seconds by the DC motor forward and reverse rotation controller, the consistency of the timing, rhythm, and force of the pressing and releasing actions in each test cycle is ensured.

[0013] Furthermore, the automated testing device integrates the DC motor forward and reverse controller, the electric push rod, the switching power supply, the rocker switch, the bracket, the transparent dust cover, and the foot positioning structure at the bottom of the bracket into a portable independent testing device, which can be carried by a single person through the handle installed on the top of the bracket.

[0014] Furthermore, the buffer pad is installed at the top of the electric push rod, and directly contacts the surface of the pedal when the push rod extends downward. The elastic deformation of the buffer pad absorbs the impact force of the push rod on the pedal, avoiding direct contact between the push rod and the pedal, which could cause scratches or pressure damage to the pedal surface. The shape and size of the buffer pad match the contour of the pedal's pressure point, ensuring that the buffer pad can evenly transmit pressure to the pedal's pressure surface when the push rod extends downward, ensuring that the pedal is reliably triggered while protecting the pedal surface from damage.

[0015] Furthermore, in S11, the preset test time is 24 hours or 48 hours to achieve long-term continuous aging and durability testing of the dental workbench, effectively exposing occasional failures and long-term reliability risks; the preset number of test cycles is hundreds to thousands to simulate the repeated pressing operation of the dental workbench foot pedal in actual clinical use. If, during continuous operation, the automated testing device experiences an abnormal situation such as the foot pedal not being triggered properly or the dental workbench stopping midway, the tester can promptly detect the abnormality through the transparent dust cover and immediately shut off the rocker switch to interrupt the test for troubleshooting. The recorded operating data and abnormal events after the test are completed are used to evaluate the factory pass rate and long-term reliability of the dental workbench.

[0016] Compared with the prior art, the automated testing method for dental equipment provided by the present invention has the following advantages: 1. The electric push rod is driven by a DC motor forward and reverse controller, and rotates forward for A seconds, stops for B seconds, reverses for C seconds, and stops for D seconds in a four-segment time sequence cycle. This replaces the manual operation of the foot pedal to complete the entire process of pressing, holding, releasing, and interval. Since the controller can independently set the duration of each segment and execute the cycle automatically, the push rod's extension stroke and pressing position are precisely triggered by the same electrical signal each time. This eliminates the random fluctuations in force and rhythm caused by manual operation, allowing a single device to run continuously for the preset duration or number of cycles without manual supervision. While reducing manpower input, this makes aging tests and the exposure of occasional failures routine tests, providing a repeatable mechanical testing basis for product quality control. 2. The controller, push rod motor, power supply module, and foot pedal positioning structure are integrated into a bracket with a handle, allowing for easy transfer between different workstations without the need for an external air source or complex installation, thus meeting the flexible deployment requirements of production lines. The transparent dust cover prevents dust accumulation on moving parts while allowing testers to directly observe the alignment of the push rod buffer pad and the foot pedal pressure point, as well as the response status of each action. The four time parameters can be adjusted according to the contact stroke and rebound characteristics of different foot pedal models, simulating both rapid tapping and prolonged heavy pressure, covering various clinical use scenarios. The buffer pad forms an elastic contact between the push rod and the foot pedal, preventing rigid impacts from causing indentations or scratches on the foot pedal surface. Throughout the cycle, the duration and sequence of actions in each stage are repeatedly executed by the controller according to the set values. The actual running time, number of cycles, and equipment response status recorded after the test can serve as a basis for quality traceability, providing data support for process improvement and fault analysis. Attached Figure Description

[0017] Figure 1 This is a top view of the automated testing device in an automated testing method for dental equipment proposed in this invention. Figure 2 This is a bottom view of the automated testing device in an automated testing method for dental equipment proposed in this invention. Figure 3 This is a schematic diagram of the inner wall structure of the automated testing device in an automated testing method for dental equipment proposed in this invention.

[0018] In the diagram: 1-Motor forward / reverse controller, 2-Electric push rod, 3-Switching power supply, 4-Rocker switch, 5-Bracket, 6-Transparent dust cover, 7-Foot pad, 8-Handle, 9-Foot pedal. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0021] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] Reference Figure 1-3 As shown, an automated testing method for dental equipment, applied to an automated testing device, includes the following steps: S11: Place the automated testing device at the testing station. The automated testing device includes a bracket 5, a DC motor forward and reverse rotation controller 1 mounted on the bracket 5, an electric push rod 2 electrically connected to the DC motor forward and reverse rotation controller 1, a switching power supply 3 that supplies power to the DC motor forward and reverse rotation controller 1 and the electric push rod 2, and a rocker switch 4 that controls the power supply of the whole machine. Place the foot pedal 9 of the dental workbench to be tested into the positioning groove at the bottom of the bracket 5, so that the buffer pad at the top of the electric push rod 2 is aligned with the center pressing point of the foot pedal 9. Connect the external AC power supply and turn on the rocker switch 4 to put the automated testing device into standby mode. In this embodiment, the switching power supply 3 converts the externally input AC 110V or AC 220V alternating current into stable direct current, providing a suitable operating voltage for the DC motor forward and reverse controller 1 and the electric push rod 2, ensuring that each electrical component operates reliably under rated voltage; the DC motor forward and reverse controller 1 uses its internal control circuit to time-sequence the output forward and reverse signals, converting the analog parameters set by the time adjustment knob into digital timing control commands; the positioning groove at the bottom of the bracket 5 adopts a sunken contour-following structure, the outline of which matches the outer edge shape of the bottom of the foot pedal 9, so that the foot pedal 9 automatically centers after being placed and does not wobble laterally; S12: Based on the specifications and testing requirements of the dental workbench foot pedal 9 under test, four time parameters for the four-segment cyclic control sequence are independently set using the time adjustment knob on the panel of the DC motor forward and reverse controller 1. The four time parameters include: forward rotation time A seconds, which is the duration of the electric push rod 2 rotating forward, extending downward and pressing the foot pedal 9, used to simulate the duration of manually pressing the foot pedal; first stop time B seconds, which is the interval time when the electric push rod 2 stops operating and remains in the lower pressing position, used to simulate the time when manually holding the foot pedal; reverse rotation time C seconds, which is the duration of the electric push rod 2 reversing, retracting upward and releasing the foot pedal 9, used to simulate the duration of manually releasing the foot pedal; and second stop time D seconds, which is the interval time when the electric push rod 2 stops operating and remains in the upper release position, used to simulate the interval time after manually fully releasing the foot pedal. The forward rotation time A seconds, first stop time B seconds, reverse rotation time C seconds, and second stop time D seconds are independently adjustable according to different testing scenarios to adapt to the testing requirements of different models of dental workbench foot pedals 9. In this embodiment, the DC motor forward and reverse controller 1 panel is equipped with four independent time adjustment knobs. Each knob corresponds to a forward rotation time of A seconds, a first stop time of B seconds, a reverse rotation time of C seconds, and a second stop time of D seconds. The operator can continuously adjust the length of each time period by rotating the corresponding knob, and the parameter setting can be completed without the need for external programming equipment or computer. The values ​​of the forward rotation time of A seconds and the reverse rotation time of C seconds are determined according to the contact stroke and rebound stroke of the foot pedal 9, ensuring that the push rod has sufficient displacement in the forward rotation phase to allow the foot pedal 9 to reach the fully triggered position, and sufficient displacement in the reverse rotation phase to allow the foot pedal 9 to fully reset. The values ​​of the first stop time of B seconds and the second stop time of D seconds are determined according to the response characteristics of the dental workbench under test, ensuring that the working state and the standby state each maintain a sufficient duration to fully observe the operating stability of the equipment in the two states. The adjustment range of each time parameter covers from rapid pressing at the millisecond level to continuous heavy pressure of tens of seconds, in order to adapt to the different requirements of different terminal instruments such as high-speed rotation of dental handpieces, vibration of dental scalers, and illumination of light curing lamps for the foot pedal triggering time. S13: Start the DC motor forward and reverse controller 1. The DC motor forward and reverse controller 1 outputs forward control signal, first stop signal, reverse control signal and second stop signal to the electric push rod 2 in sequence according to the set four-segment cyclic control timing, driving the electric push rod 2 to perform reciprocating linear motion; In the forward rotation stage, the electric push rod 2 rotates forward, causing the push rod to extend downward for A seconds. The buffer pad at the top of the push rod gradually presses the foot pedal 9 to the working position, triggering the dental worktable to enter the working state; In the first stop stage, the electric push rod 2 stops running for B seconds. The push rod remains in the pressed position, and the dental worktable maintains the working state; In the reverse rotation stage, the electric push rod 2 reverses, causing the push rod to retract upward for C seconds. The buffer pad at the top of the push rod gradually releases the foot pedal 9 to the initial position, causing the dental worktable to switch to the standby state; In the second stop stage, the electric push rod 2 stops running for D seconds. The push rod remains in the released position, and the dental worktable maintains the standby state, forming a complete test cycle; In this embodiment, the DC motor forward / reverse controller 1 controls the rotation direction of the electric push rod 2 by changing the polarity of the DC power supply output to the electric push rod 2. When a positive voltage is output, the electric push rod 2 rotates forward and drives the push rod to extend; when a reverse voltage is output, the electric push rod 2 rotates in reverse and drives the push rod to retract; when the output is zero, the electric push rod 2 stops operating and maintains its current position by relying on its internal self-locking mechanism. The thrust output by the electric push rod 2 during the forward rotation phase is determined by the driving voltage and current output by the DC motor forward / reverse controller 1. Its thrust value is greater than the trigger force threshold of the foot pedal 9 but less than the ultimate withstand pressure of the foot pedal 9, ensuring reliable triggering without damaging the foot. The internal microswitch or pneumatic valve assembly of pedal 9; the buffer pad first contacts the upper surface of pedal 9 as the push rod extends downward. As the push rod continues to extend, the buffer pad undergoes elastic compression deformation, converting the rigid linear motion of the push rod into a flexible pressure increment, simulating the gradual process of muscle transmitting force through the sole of the shoe when the human foot steps down; in the complete test cycle, the motion trajectory of the push rod is in the shape of a rectangular wave, that is, quickly extending to the position, holding pressure and stopping, quickly retracting to the original position, and releasing and stopping. The transition of the four stages is precisely controlled by the time relay or digital timer inside the DC motor forward and reverse controller 1, and the error of the transition time is controlled within the millisecond level; S14: The DC motor forward and reverse controller 1 automatically repeats the complete test cycle, driving the electric push rod 2 to continuously perform reciprocating linear motion, simulating the action of manually pressing and releasing the dental workbench foot pedal 9, so that the dental workbench automatically and cyclically alternates between working state and standby state according to the set cycle sequence. During the test, the tester can observe the running status of the electric push rod 2 and the force on the foot pedal 9 in real time through the transparent dust cover 6 set on both sides of the bracket 5. The automated test device runs continuously until the preset test time or number of test cycles is reached, or until the tester manually turns off the power. In this embodiment, the DC motor forward and reverse controller 1 has a built-in cycle counter. Each time a complete test cycle is completed, the count value is automatically incremented. When the accumulated number of cycles reaches the preset number of test cycles, the controller automatically cuts off the output signal, causing the electric push rod 2 to stop and remain stationary, achieving automatic shutdown without human intervention. The preset test time is set via an external timer or the controller's built-in timing module. When the device's continuous running time reaches the set value, automatic shutdown is also triggered. The two shutdown methods are independent and serve as backups for each other; the device stops operating when either condition is met. During continuous operation, each extension and retraction of the electric push rod 2 reciprocates along the same vertical axis. The push rod's travel distance is precisely limited by the internal limit switch or limit mechanism of the electric push rod 2, ensuring that the consistency deviation of each pressing position is less than ±0.5 mm. The transparent dust cover 6 is made of transparent material, allowing testers to directly observe the contact state between the push rod and the foot pedal 9, the straightness of the push rod's trajectory, and whether the foot pedal 9 has shifted position from outside the device, without needing to open the dust cover for full monitoring. S15: When the test reaches the predetermined test time or number of cycles, turn off the rocker switch 4 to cut off the power, the electric push rod 2 stops running, and remove the foot pedal 9 under test from the positioning groove at the bottom of the bracket 5 to complete the test; record the running data and abnormal events during the test, including the actual running time, the actual number of cycles, and the response status of the dental workbench in each cycle.

[0023] Specifically, the system uses a four-segment time cycle of forward rotation for A seconds, stop for B seconds, reverse rotation for C seconds, and stop for D seconds, where A, B, C, and D are all preset time values ​​of the system. In this embodiment, the DC motor forward and reverse controller 1 records the actual action duration of the electric actuator 2 in each cycle in real time during operation. When the deviation between the actual action duration and the set duration exceeds the preset tolerance range, the controller marks the cycle as an abnormal cycle and records the time point and deviation value of the abnormality. Abnormal events include: overcurrent protection triggering of the electric actuator 2, insufficient actuator stroke, missing or delayed trigger signal of the foot pedal 9, and abnormal fluctuations in current or air pressure of the dental workbench during operation. The operating data and abnormal events are presented in real time through the digital display screen on the controller panel, or exported to an external storage device through the data communication interface on the controller, providing raw data basis for quality assessment and fault analysis after testing.

[0024] In this embodiment, the bracket 5 serves as the skeleton of the entire machine, and all components are directly or indirectly mounted on the bracket 5. A handle 8 is installed on the top of the bracket 5, and the handle 8 is fixed to the center of the top crossbeam of the bracket 5 by bolts, which facilitates single-person handling of the moving device. The bottom of the bracket 5 is provided with a positioning groove for accommodating and positioning the dental workbench foot pedal 9. The size of the positioning groove is adapted by adding an adjustable clamp to prevent the foot pedal 9 from shifting during the test and to ensure that the buffer pad at the top of the electric push rod 2 is always aligned with the center pressing point of the foot pedal 9. Foot pads 7 are installed at the four corners of the bottom of the bracket 5. The foot pads 7 are fixed to the four corners of the bottom of the bracket 5 by screws, which serve to reduce shock, prevent slipping, and protect the workbench surface. Transparent dust covers 6 are installed on both sides of the bracket 5. The transparent dust covers 6 are connected to the bracket 5 by hinges, which can be easily opened and closed, taking into account both dust protection of moving parts and visual monitoring of the test status.

[0025] In this embodiment, the adjustable clamp includes a pair of clamping blocks arranged opposite each other on both sides of the positioning groove. Each clamping block is connected to the bracket 5 through a threaded adjustment rod. The operator can rotate the threaded adjustment rod to drive the clamping blocks closer or further apart, thereby changing the effective width of the positioning groove to adapt to the external dimensions of different models of foot pedals 9. The bottom surface of the positioning groove is provided with an anti-slip textured layer. After the foot pedal 9 is placed in the positioning groove, the anti-slip textured layer increases the friction coefficient between the bottom surface of the foot pedal 9 and the positioning groove, preventing the foot pedal 9 from slipping or rotating due to the horizontal component force during the reciprocating pressure of the push rod. When the transparent dust cover 6 is closed, it isolates the area where the electric push rod 2 and the foot pedal 9 are located from the external environment, preventing dust, water mist or metal debris in the production workshop from entering the moving parts and electrical connection parts, which facilitates observation and extends the service life of the device.

[0026] In this embodiment, the DC motor forward / reverse controller 1 is mounted on the outer panel of the bracket 5. The panel of the DC motor forward / reverse controller 1 has a time adjustment knob, which faces outwards for easy parameter adjustment by the operator. The DC motor forward / reverse controller 1 is connected to the electric push rod 2 via wires, and is used to output forward control signals, reverse control signals, and stop signals, and to control the movement direction and timing of the electric push rod 2. The electric push rod 2 is vertically mounted inside the upper part of the bracket 5, and is fixed to the crossbeam of the bracket 5 by bolts. The top of the push rod 2 is positioned downwards, directly opposite the center of the positioning groove at the bottom of the bracket 5. A buffer is installed at the top of the push rod. The impact pad and buffer pad act directly on the surface of the dental workbench foot pedal 9 to protect the surface of the foot pedal 9 from scratches or pressure damage; the push rod stroke and thrust of the electric push rod 2 are selected according to the specifications of the foot pedal 9 being tested to cover different models of dental workbench products; after receiving the forward control signal output by the DC motor forward and reverse controller 1, the electric push rod 2 performs forward linear motion, causing the push rod to extend downward and press the foot pedal 9; after receiving the reverse control signal output by the DC motor forward and reverse controller 1, it performs reverse linear motion, causing the push rod to retract upward and release the foot pedal 9, converting the rotational motion of the motor into the reciprocating linear motion of the push rod, simulating the action of manually pressing and releasing the dental workbench foot pedal 9.

[0027] Specifically, the wires between the DC motor forward and reverse controller 1 and the electric push rod 2 are connected by quick-connect aviation connectors. These aviation connectors have anti-reverse insertion and self-locking functions, which facilitates quick plugging and unplugging of the device during maintenance or component replacement. The push rod extension end of the electric push rod 2 is equipped with a limiting buffer ring. When the push rod extends to its maximum stroke, the limiting buffer ring abuts against the end face of the housing of the electric push rod 2, limiting the maximum extension position of the push rod and preventing the push rod from over-extending and damaging the foot pedal 9 or the push rod itself.

[0028] In this embodiment, the switching power supply 3 is installed inside the bracket 5, and its input terminal is connected to an external AC power supply via a rocker switch 4. The external AC power supply is AC 110V or AC 220V. The switching power supply 3 converts the input AC power into DC power. The output terminal of the switching power supply 3 is connected to the DC motor forward and reverse controller 1 and the electric push rod 2 via wires. The rocker switch 4 is installed on the outside of the bracket 5 in a position that is easy for the operator to reach, and is connected in series with the AC input terminal of the switching power supply 3.

[0029] Specifically, the switching power supply 3 is a fully enclosed metal-cased switching power supply with heat dissipation fins on its outer surface. It utilizes air convection to dissipate the heat generated inside the power supply to the external environment, ensuring that the temperature rise of the power supply does not exceed the rated limit under long-term continuous operation. The rocker switch 4 integrates a power indicator light, which is constantly lit after the rocker switch 4 is closed, indicating to the operator that the device is currently powered on. The output terminal of the switching power supply 3 is also connected in parallel with a voltmeter, which is installed on the panel of the DC motor forward and reverse controller 1. It displays the DC voltage value output by the switching power supply 3 in real time, allowing the operator to check whether the power supply is normal.

[0030] In this embodiment, the forward rotation time A seconds is used to simulate the duration of manually pressing the pedal 9, the first stop time B seconds is used to simulate the time the manual holds the pedal position, the reverse rotation time C seconds is used to simulate the duration of manually releasing the pedal 9, and the second stop time D seconds is used to simulate the interval after the manual completely releases the pedal 9. The forward rotation time A seconds, the first stop time B seconds, the reverse rotation time C seconds, and the second stop time D seconds are adjusted independently according to different test scenarios, including setting the forward rotation time A seconds and the reverse rotation time C seconds to a shorter time in the scenario of simulating rapid pressing, and setting the forward rotation time A seconds to a longer time in the scenario of simulating long pressing. The DC motor forward and reverse rotation controller 1 automatically enters the next cycle after completing the test cycle until the preset test time or number of test cycles is reached.

[0031] Specifically, when simulating rapid pressing scenarios, the forward rotation time (A seconds) and reverse rotation time (C seconds) are set to shorter durations within the range of 0.2 to 0.5 seconds, and the first stop time (B seconds) and the second stop time (D seconds) are set to shorter durations within the range of 0.1 to 0.3 seconds. This allows the push rod to complete more cycles per unit time, simulating the high-frequency pressing operation habit of dentists during treatment. When simulating long pressing scenarios, the forward rotation time (A seconds) is set to a longer duration within the range of 5 to 30 seconds, and the first stop time (B seconds) is set to a duration of the same order of magnitude as (A seconds). This simulates the continuous pressing of the foot pedal by dentists during long-term continuous grinding or teeth cleaning operations, and examines the temperature rise and stability of the dental workbench under continuous load.

[0032] Each downward extension of the electric actuator 2 presses the foot pedal 9 into the working position, triggering the dental worktable to enter the working state, causing the dental handpiece to rotate, the scaler to vibrate, or the light curing lamp to light up; each upward retraction of the electric actuator 2 releases the foot pedal 9 to the initial position, switching the dental worktable to the standby state, stopping the dental handpiece from rotating, stopping the scaler from vibrating, or turning off the light curing lamp; through the precise control of the forward rotation time A seconds, the first stop time B seconds, the reverse rotation time C seconds, and the second stop time D seconds by the DC motor forward and reverse controller 1, the consistency of the timing, rhythm, and force of the pressing and releasing actions in each test cycle is ensured.

[0033] In this embodiment, when the dental handpiece rotates, its internal turbine rotates at high speed under air pressure. While the push rod of the electric actuator 2 remains in the pressed position, the continuous rotation of the dental handpiece simulates the load state of clinical drilling or grinding operations, which is used to verify the bearing life and noise level of the dental handpiece under long-term continuous rotation conditions. When the scaler vibrates, its working tip generates high-frequency vibration under ultrasonic or pneumatic excitation. While the push rod of the electric actuator 2 remains in the pressed position, the continuous vibration of the scaler simulates the load state of clinical scaling operations, which is used to verify the amplitude stability and handle heating of the scaler under long-term continuous vibration conditions. When the light curing lamp is lit, its LED light source emits light continuously. While the push rod of the electric actuator 2 remains in the pressed position, the continuous lighting of the light curing lamp simulates the load state of clinical resin curing operations, which is used to verify the light power attenuation and heat dissipation performance of the light curing lamp under long-term continuous lighting conditions.

[0034] Specifically, the automated testing device integrates a DC motor forward and reverse controller 1, an electric push rod 2, a switching power supply 3, a rocker switch 4, a bracket 5, a transparent dust cover 6, and a foot pedal positioning structure at the bottom of the bracket 5 into a portable independent testing device, which can be carried by a single person through the handle 8 installed on the top of the bracket 5.

[0035] In this embodiment, after the automated testing device is integrated into an independent testing unit, its overall weight is controlled within 15 kg and its volume does not exceed 0.06 cubic meters, making it easy for operators to quickly move between different testing stations by holding the handle 8 with one hand. The foot pads 7 installed at the four corners of the bottom of the bracket 5 are made of rubber or silicone material, and their bottom surfaces are provided with concentric ring-shaped anti-slip textures. After the device is placed on the workbench, a vacuum adsorption effect is formed between the foot pads 7 and the workbench, which enhances the positional stability of the device during operation.

[0036] Specifically, the buffer pad is installed at the top of the electric push rod 2. When the push rod extends downward, it directly contacts the surface of the pedal 9. The elastic deformation of the buffer pad absorbs the impact force of the push rod on the pedal 9, preventing the push rod from directly contacting the pedal 9 and causing scratches or pressure damage to the surface of the pedal 9. The shape and size of the buffer pad match the profile of the pedal 9's pressure point, ensuring that the buffer pad can evenly transmit pressure to the pressure surface of the pedal 9 when the push rod extends downward, ensuring that the pedal 9 is reliably triggered while protecting the surface of the pedal 9 from damage.

[0037] In this embodiment, the buffer pad is integrally molded from silicone material with a Shore hardness of 40 to 60. Silicone within this hardness range can undergo sufficient elastic deformation to absorb impact energy when compressed, without weakening the effective pressure transmitted to the pedal 9 due to excessive deformation. The surface of the buffer pad facing the pedal 9 is a concave arc-shaped surface. The radius of curvature of this arc-shaped surface matches the radius of curvature of the surface of the pedal 9's pressing point, so that the buffer pad and the pedal 9 form a surface contact rather than a point contact or line contact, thereby maximizing the contact area, reducing contact stress, and avoiding indentations or paint damage to the surface of the pedal 9 due to stress concentration.

[0038] In S11 of this embodiment, the preset test time is 24 hours or 48 hours to achieve long-term continuous aging test and durability test of the dental workbench, effectively exposing occasional failures and long-term reliability hazards; the preset number of test cycles is hundreds to thousands to simulate the repeated pressing operation of the dental workbench foot pedal 9 in actual clinical use. Specifically, the preset test time is a long-term continuous operation test of 24 hours or 48 hours, which is used to simulate the cumulative wear and tear of the dental workbench after several days or weeks of actual use in the clinic. This accelerates the exposure of latent defects that develop slowly over time, such as the oxide layer of the microswitch contacts inside the foot pedal 9, fatigue cracks in the gas control valve seal ring, and thermal cycle stress of the solder joints on the circuit board. The preset number of test cycles is hundreds to thousands. By recording and comparing the results of different number of cycle tests, a curve of the change of the foot pedal 9 trigger force with the increase of the number of cycles is plotted to evaluate the operating life and performance degradation trend of the dental workbench foot pedal 9.

[0039] If, during continuous operation of the automated testing device, an abnormal situation occurs such as the foot pedal 9 failing to trigger properly or the dental workbench stopping midway, the tester can promptly detect the abnormality through the transparent dust cover 6 and immediately shut off the rocker switch 4 to interrupt the test for troubleshooting. The recorded operating data and abnormal events after the test are completed are used to evaluate the factory pass rate and long-term reliability of the dental workbench.

[0040] In this embodiment, the transparent dust cover 6 is disposed on the left and right sides or the front and back sides of the bracket 5. The two transparent dust covers 6 form a relatively through observation channel. When the tester observes the device through the transparent dust cover 6 from one side, the external light passing through the other transparent dust cover 6 can be used to illuminate the internal moving parts. A clear field of view can be obtained without turning on additional lighting equipment. The operating data and abnormal events are recorded in the non-volatile storage chip inside the DC motor forward and reverse controller 1. Even if the device is powered off, the data is still stored in the chip, avoiding the loss of test data due to accidental power failure and the inability to trace back.

[0041] In this embodiment, the entire operation process can be automated by computer control. In each operation stage, sensors can be set up to provide signal feedback and ensure that the steps are performed sequentially. These are all conventional knowledge of current automation control, and will not be elaborated on in this embodiment.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated testing method for dental equipment, characterized in that, When applied to automated testing equipment, the following steps are included: S11: Place the automated testing device at the testing station. The automated testing device includes a bracket, a DC motor forward and reverse rotation controller mounted on the bracket, an electric push rod electrically connected to the DC motor forward and reverse rotation controller, a switching power supply that powers the DC motor forward and reverse rotation controller and the electric push rod, and a rocker switch that controls the power supply of the entire machine. Place the foot pedal of the dental workbench to be tested into the positioning groove at the bottom of the bracket, so that the buffer pad at the top of the electric push rod is aligned with the center pressing point of the foot pedal. Connect the external AC power supply and turn on the rocker switch to put the automated testing device into standby mode. S12: Based on the specifications and testing requirements of the dental workbench foot pedal under test, four time parameters of the four-segment cyclic control sequence are independently set using the time adjustment knob on the DC motor forward and reverse controller panel. The four time parameters include: forward rotation time A seconds, which is the duration of the electric actuator rotating forward, extending downward and pressing the foot pedal, used to simulate the duration of manually pressing the foot pedal; first stop time B seconds, which is the interval between the electric actuator stopping and the actuator remaining in the lower pressing position, used to simulate the duration of manually maintaining the pressing state; reverse rotation time C seconds, which is the duration of the electric actuator reversing, retracting upward and releasing the foot pedal, used to simulate the duration of manually releasing the foot pedal; and second stop time D seconds, which is the interval between the electric actuator stopping and the actuator remaining in the upper release position, used to simulate the interval after manually fully releasing the foot pedal. The forward rotation time A seconds, first stop time B seconds, reverse rotation time C seconds, and second stop time D seconds are independently adjustable according to different testing scenarios to adapt to the testing requirements of different models of dental workbench foot pedals. S13: Start the DC motor forward and reverse controller. The DC motor forward and reverse controller outputs forward control signal, first stop signal, reverse control signal and second stop signal to the electric push rod in sequence according to the set four-segment cyclic control sequence, driving the electric push rod to perform reciprocating linear motion. In the forward rotation stage, the electric push rod rotates forward, causing the push rod to extend downward for A seconds. The buffer pad at the top of the push rod gradually presses the foot pedal to the working position, triggering the dental worktable to enter the working state. In the first stop stage, the electric push rod stops running for B seconds. The push rod remains in the pressed position, and the dental worktable maintains the working state. In the reverse rotation stage, the electric push rod reverses, causing the push rod to retract upward for C seconds. The buffer pad at the top of the push rod gradually releases the foot pedal to the initial position, causing the dental worktable to switch to the standby state. In the second stop stage, the electric push rod stops running for D seconds. The push rod remains in the released position, and the dental worktable maintains the standby state, forming a complete test cycle. S14: The DC motor forward and reverse controller automatically repeats the complete test cycle, driving the electric push rod to continuously perform reciprocating linear motion, simulating the action of manually pressing and releasing the foot pedal of the dental workbench. During the test, the tester can observe the running status of the electric push rod and the force on the foot pedal in real time through the transparent dust covers set on both sides of the bracket. The automated test device runs continuously until the preset test time or number of test cycles is reached, or until the tester manually turns off the power. S15: When the test reaches the predetermined test time or number of cycles, turn off the rocker switch to cut off the power, the electric push rod stops running, and remove the foot pedal under test from the positioning groove at the bottom of the bracket to complete the test; record the running data and abnormal events during the test, including the actual running time, the actual number of cycles, and the response status of the dental workbench in each cycle.

2. The automated testing method for dental equipment as described in claim 1, characterized in that, In S11, a handle is installed on the top of the bracket, and the handle is fixed to the center of the top crossbeam of the bracket by bolts; the bottom of the bracket is provided with a positioning groove for accommodating and positioning the dental workbench foot pedal, and the size of the positioning groove is adapted by adding an adjustable clamp; foot pads are installed at the four corners of the bottom of the bracket, and the foot pads are fixed to the four corners of the bottom of the bracket by screws; transparent dust covers are installed on both sides of the bracket, and the transparent dust covers are connected to the bracket by hinges.

3. The automated testing method for dental equipment as described in claim 2, characterized in that, The DC motor forward and reverse rotation controller is mounted on the outer panel of the bracket. The panel of the DC motor forward and reverse rotation controller is equipped with a time adjustment knob, which is set outward to facilitate the operator to adjust the parameters. The DC motor forward and reverse rotation controller is connected to the electric push rod through wires and is used to output forward rotation control signal, reverse rotation control signal and stop signal, and control the movement direction and timing of the electric push rod.

4. The automated testing method for dental equipment as described in claim 3, characterized in that, The electric push rod is vertically installed inside the upper part of the bracket. The electric push rod is fixed to the crossbeam of the bracket by bolts. The top of the electric push rod is set downwards, directly facing the center of the positioning groove at the bottom of the bracket. A buffer pad is installed on the top of the push rod. The buffer pad acts directly on the surface of the dental workbench foot pedal to protect the foot pedal surface from scratches or pressure damage. The push rod stroke and thrust of the electric linear actuator are selected according to the specifications of the foot pedal being tested, so as to cover different models of dental workbench products; After receiving the forward control signal output by the DC motor forward and reverse controller, the electric push rod moves in a forward linear motion, causing the push rod to extend downward and press against the foot pedal. After receiving the reverse control signal output by the DC motor forward and reverse controller, it moves in a reverse linear motion, causing the push rod to retract upward and release the foot pedal. This converts the rotational motion of the motor into the reciprocating linear motion of the push rod, simulating the action of manually pressing and releasing the foot pedal of the dental workbench.

5. The automated testing method for dental equipment as described in claim 4, characterized in that, The switching power supply is installed inside the bracket, and its input terminal is connected to an external AC power source via a rocker switch. The switching power supply converts the input AC power into DC power. The output terminal of the switching power supply is connected to the DC motor forward / reverse controller and the electric push rod via wires. The rocker switch is installed on the outside of the bracket in a position easily accessible to the operator and is connected in series with the AC input terminal of the switching power supply.

6. The automated testing method for dental equipment as described in claim 5, characterized in that, In S13, the forward rotation time A seconds is used to simulate the duration of manually pressing the pedal, the first stop time B seconds is used to simulate the time the manual maintains the pedal position, the reverse rotation time C seconds is used to simulate the duration of manually releasing the pedal, and the second stop time D seconds is used to simulate the interval after the manual fully releases the pedal. The forward rotation time A seconds, the first stop time B seconds, the reverse rotation time C seconds, and the second stop time D seconds are independently adjusted according to different test scenarios, including setting the forward rotation time A seconds and the reverse rotation time C seconds to a shorter time in a scenario simulating rapid pedaling, and setting the forward rotation time A seconds to a longer time in a scenario simulating long pedaling. The DC motor forward and reverse rotation controller automatically enters the next cycle after completing the test cycle, until the preset test time or number of test cycles is reached.

7. The automated testing method for dental equipment as described in claim 6, characterized in that, In S14, each time the electric push rod extends downward, it presses the foot pedal to the working position, triggering the dental worktable to enter the working state, causing the dental handpiece to rotate, the scaler to vibrate, or the light curing lamp to light up; each time the electric push rod retracts upward, it releases the foot pedal to the initial position, causing the dental worktable to switch to the standby state, causing the dental handpiece to stop rotating, the scaler to stop vibrating, or the light curing lamp to turn off.

8. The automated testing method for dental equipment as described in claim 7, characterized in that, The automated testing device integrates a DC motor forward / reverse controller, an electric push rod, a switching power supply, a rocker switch, a bracket, a transparent dust cover, and a foot pedal positioning structure at the bottom of the bracket into a portable, independent testing device, which can be carried by a single person using a handle installed on the top of the bracket.

9. The automated testing method for dental equipment as described in claim 8, characterized in that, The buffer pad is installed at the top of the push rod of the electric push rod, and directly contacts the surface of the foot pedal when the push rod extends downward. The impact force of the push rod on the foot pedal is absorbed by the elastic deformation of the buffer pad.

10. The automated testing method for dental equipment as described in claim 9, characterized in that, In S11, the preset test time is 24 hours or 48 hours to achieve long-term continuous aging test and durability test of the dental workbench, effectively exposing occasional failures and long-term reliability risks. The preset number of test cycles is hundreds to thousands to simulate the repeated pressing operation of the dental workbench foot pedal in actual clinical use.

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