An electric toothbrush detector and its implementation method

Abstract

The present invention discloses an electric toothbrush detector, which includes a frame. A human-machine interaction interface is installed at the upper end of the frame. A test fixture is also installed on the frame. The test fixture includes a bottom plate. A test bench is installed at the middle position above the bottom plate. A first laser displacement sensor assembly is provided on one side of the test bench, and a second laser displacement sensor assembly is installed at the other end of the test bench. A resonator test assembly is provided on one side of the second laser displacement sensor assembly. The present invention also discloses an implementation method of the electric toothbrush detector. Through the cooperation of the first laser displacement sensor assembly, the resonator test assembly and the second laser displacement sensor assembly, the present invention realizes the automatic testing of the amplitude and frequency of the electric toothbrush driver and the resonator, improves the testing efficiency and testing accuracy, reduces the labor intensity of the staff, and can automatically save the test data.

Description

Technical Field

[0001] The invention belongs to the technical field of electric toothbrush detection, and in particular relates to an electric toothbrush detection machine and an implementation method thereof. Background Art

[0002] Electric toothbrushes can generate high-frequency vibrations in the brush head through the rapid rotation or vibration of the motor core, instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. In principle, there are two types of electric toothbrushes: rotational and vibrational. The principle of a rotational toothbrush is simple, that is, the motor drives the circular brush head to rotate, which enhances the friction effect while performing ordinary brushing actions. Rotational toothbrushes have strong power, clean the tooth surface very cleanly, and the cleaning of the gaps between teeth is relatively weak, but they cause great wear on the teeth, so long-term use is not recommended. Vibrational toothbrushes are more complex and more high-end in terms of price. There is an electrically driven vibration motor inside the vibration type toothbrush, which allows the brush head to produce high-frequency swings perpendicular to the direction of the brush handle, but the swing amplitude is very small, generally about 5 mm up and down, and the largest swing amplitude in the industry is 6 mm.

[0003] In the production process of electric toothbrushes, the performance of electric toothbrushes depends largely on the amplitude and frequency of the resonator, so the resonator performance of electric toothbrushes needs to be tested in the production process of electric toothbrushes. Electric toothbrushes mainly contain drivers and resonators, and the quality of electric toothbrushes depends largely on the amplitude and frequency of these two.

[0004] At present, this process mostly relies on manual inspection. Each time the probe is used to hold the electric toothbrush, there is a slight deviation in the position, and the accuracy of the amplitude and frequency finally tested is difficult to guarantee. Therefore, it is necessary to develop a detection tooling to meet the requirements of product consistency detection. Summary of the invention

[0005] The purpose of the present invention is to provide an electric toothbrush detector to solve the problems mentioned in the above background technology. The electric toothbrush detector provided by the present invention has the characteristics of being able to automatically detect the amplitude and frequency of the electric toothbrush driver and resonator.

[0006] Another object of the present invention is to provide a method for implementing an electric toothbrush detection machine.

[0007] To achieve the above object, the present invention provides the following technical solution: An electric toothbrush detector, comprising a frame, on the upper end of the frame, a human-machine interaction interface is installed, and a test fixture is also installed on the frame. The test fixture includes a bottom plate, in the middle position above the bottom plate, a test bench is installed. On one side of the test bench, a first laser displacement sensor assembly is provided, and at the other end of the test bench, a second laser displacement sensor assembly is installed. On one side of the second laser displacement sensor assembly, a resonator test assembly is provided. The first laser displacement sensor assembly, the test bench, the resonator test assembly, and the second laser displacement sensor assembly are all connected to a PLC controller in a signal manner.

[0008] In order to fix the electric toothbrush and realize the power-on of the electric toothbrush, further, the test bench includes a test base, above the test base, an electric toothbrush placement seat is provided. On one side of the electric toothbrush placement seat, a clamping and positioning cylinder is provided, and on the output end of the clamping and positioning cylinder, a clamping block is connected. Inside the test base, a lifting cylinder is installed, and on the output end of the lifting cylinder, a probe corresponding to the bent copper sheet of the electric toothbrush is connected.

[0009] In order to support the clamping block and guide the sliding of the clamping block, further, a slider guide rail is installed above the test base, and the clamping block is installed on the slider of the slider guide rail.

[0010] In order to support the bent copper sheet of the electric toothbrush and prevent the bent copper sheet of the electric toothbrush from deforming too much and unable to reset, further, a ejector cylinder is installed on the test base, on the output end of the ejector cylinder, an ejector block is installed, and on the ejector block, a cushion block corresponding to the bent copper sheet of the electric toothbrush is installed.

[0011] In order to collect the displacement data of the driver and the resonator, further, the first laser displacement sensor assembly includes a moving adjustment guide rail, on the slider of the moving adjustment guide rail, a connecting plate is installed, on the connecting plate, a two-axis displacement adjustment table is installed, and on the two-axis displacement adjustment table, a laser displacement sensor is installed. The structure of the second laser displacement sensor assembly is the same as that of the first laser displacement sensor assembly.

[0012] In order to push the resonator to displace, further, the resonator test assembly includes an electric cylinder mounting seat, on the electric cylinder mounting seat, an electric cylinder is installed, on the output end of the electric cylinder, a spring block is installed, and on the spring block, a spring piece is installed.

[0013] In order to limit the movement of the spring piece, further, a limit cylinder is installed above the spring block, and on the output end of the limit cylinder, a limit block is installed.

[0014] In the present invention, further, a method for realizing the electric toothbrush detector includes the following steps:

[0015] (1) The operator places the electric toothbrush on the electric toothbrush placement seat, and the clamping positioning cylinder drives the clamping block to move, so that the electric toothbrush is clamped;

[0016] (2) The ejection cylinder drives the ejection block to be pushed out, so that the pad is in the sharp angle bend of the electric toothbrush bent copper sheet, and the lifting cylinder drives the probe to rise and support the electric toothbrush bent copper sheet. At the same time, the electric cylinder drives the spring sheet to press against one end of the resonator;

[0017] (III) Start the test. First, the PLC controller applies a sinusoidal voltage, then disconnects the power supply, collects and records the displacement of the resonator driver and the oscillation curve of its back electromotive force in real time, calculates the frequency and damping coefficient of the driver through the displacement curve, and then obtains the speed curve based on the displacement curve, and calculates the motor constant in conjunction with the back electromotive force. The displacement is detected by a laser displacement sensor;

[0018] (IV) Parameter detection steps of the resonator: the electric cylinder pushes the resonator to move and releases it quickly, and the laser displacement sensor collects and records the displacement curve in real time; the frequency and damping coefficient of the resonator are calculated through the displacement curve;

[0019] (V) After the test is completed, the staff will replace the product and continue the test.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes automatic testing of the electric toothbrush driver and the amplitude and frequency of the resonator through the cooperation of the first laser displacement sensor component, the resonator test component and the second laser displacement sensor component, thereby improving the test efficiency and test accuracy, reducing the labor intensity of the staff, and automatically saving the test data;

[0022] 2. A lifting cylinder is installed inside the test base of the present invention, and a probe corresponding to the bent copper sheet of the electric toothbrush is connected to the output end of the lifting cylinder. The lifting cylinder drives the probe to press against the bent copper sheet of the electric toothbrush. The contact position and the resistance pressure between the probe and the bent copper sheet of the electric toothbrush are controllable, thereby ensuring the accuracy of the test;

[0023] 3. A lifting cylinder is also installed on the test base of the present invention, and a lifting block is installed on the output end of the lifting cylinder. A pad corresponding to the bent copper sheet of the electric toothbrush is installed on the lifting block. The lifting cylinder drives the lifting block to be pushed out, so that the pad is in the sharp angle bend of the bent copper sheet of the electric toothbrush, supports the bent copper sheet of the electric toothbrush, and prevents the bent copper sheet of the electric toothbrush from being unable to be reset due to excessive deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the test tooling of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the test bench of the present invention;

[0027] Figure 4 It is a partially enlarged schematic structural diagram of the test bench of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the first laser displacement sensor assembly of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the resonator test assembly of the present invention;

[0030] In the figure: 1, frame; 2, human-machine interface; 3, test tooling; 4, bottom plate; 5, first laser displacement sensor assembly; 51, moving adjustment guide rail; 52, connecting plate; 53, two-axis displacement adjustment table; 54, laser displacement sensor; 6, test bench; 61, test base; 62, ejector cylinder; 63, clamping and positioning cylinder; 64, clamping block; 65, slider guide rail; 66, electric toothbrush placement seat; 67, probe; 68, ejector block; 69, lifting cylinder; 610, cushion block; 7, resonator test assembly; 71, cylinder mounting seat; 72, cylinder; 73, spring block; 74, spring piece; 75, limit block; 76, limit cylinder; 8, second laser displacement sensor assembly; 9, electric toothbrush bending copper sheet. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] Please refer to Figure 1-6 , the present invention provides the following technical solutions: An electric toothbrush detector includes a frame 1, a human-machine interface 2 is installed at the upper end of the frame 1, a test tooling 3 is also installed on the frame 1, the test tooling 3 includes a bottom plate 4, a test bench 6 is installed at the middle position above the bottom plate 4, a first laser displacement sensor assembly 5 is provided on one side of the test bench 6, a second laser displacement sensor assembly 8 is installed at the other end of the test bench 6, a resonator test assembly 7 is provided on one side of the second laser displacement sensor assembly 8, and the first laser displacement sensor assembly 5, the test bench 6, the resonator test assembly 7, and the second laser displacement sensor assembly 8 are all signal-connected to the PLC controller.

[0034] By adopting the above technical solution, through the cooperation of the first laser displacement sensor assembly 5, the resonator test assembly 7 and the second laser displacement sensor assembly 8, the automatic testing of the electric toothbrush driver, the amplitude and frequency of the resonator is realized, the testing efficiency and accuracy are improved, the labor intensity of the staff is reduced, and the test data can be automatically saved.

[0035] Specifically, the test bench 6 includes a test base 61. Above the test base 61, there is an electric toothbrush placement seat 66. On one side of the electric toothbrush placement seat 66, there is a clamping and positioning cylinder 63. A clamping block 64 is connected to the output end of the clamping and positioning cylinder 63. Inside the test base 61, a lifting cylinder 69 is installed. A probe 67 corresponding to the electric toothbrush bending copper sheet 9 is connected to the output end of the lifting cylinder 69.

[0036] By adopting the above technical solution, it is used to fix the electric toothbrush and realize the power-on of the electric toothbrush; the lifting cylinder 69 drives the probe 67 to abut against the electric toothbrush bending copper sheet 9, and the contact position and abutting pressure between the probe 67 and the electric toothbrush bending copper sheet 9 are controllable, thus ensuring the testing accuracy.

[0037] Specifically, a slider guide rail 65 is installed above the test base 61, and the clamping block 64 is installed on the slider of the slider guide rail 65.

[0038] By adopting the above technical solution, it supports the clamping block 64 and can guide the sliding of the clamping block 64.

[0039] Specifically, the first laser displacement sensor assembly 5 includes a moving and adjusting guide rail 51. A connecting plate 52 is installed on the slider of the moving and adjusting guide rail 51. A two-axis displacement adjusting table 53 is installed on the connecting plate 52, and a laser displacement sensor 54 is installed on the two-axis displacement adjusting table 53. The structure of the second laser displacement sensor assembly 8 is the same as that of the first laser displacement sensor assembly 5.

[0040] By adopting the above technical solution, it is used to collect the displacement data of the driver and the resonator.

[0041] Embodiment 2

[0042] The difference between this embodiment and Embodiment 1 is that: Specifically, a ejecting cylinder 62 is further installed on the test base 61. An ejecting block 68 is installed on the output end of the ejecting cylinder 62, and a cushion block 610 corresponding to the electric toothbrush bending copper sheet 9 is installed on the ejecting block 68.

[0043] By adopting the above technical solution, the ejection cylinder 62 drives the ejection block 68 to be pushed out, so that the pad 610 is located in the sharp angle bend of the electric toothbrush bent copper sheet 9, supporting the electric toothbrush bent copper sheet 9 and preventing the electric toothbrush bent copper sheet 9 from being deformed too much and unable to be reset.

[0044] Example 3

[0045] The present embodiment is different from the embodiment 1 in that: specifically, the resonator test assembly 7 includes an electric cylinder mounting seat 71, an electric cylinder 72 is mounted on the electric cylinder mounting seat 71, a spring block 73 is mounted on the output end of the electric cylinder 72, and a spring sheet 74 is mounted on the spring block 73.

[0046] By adopting the above technical solution, the spring sheet 74 is pressed against the end of the resonator, and the electric cylinder 72 drives the spring sheet 74 to move, thereby pushing the resonator to move.

[0047] Example 4

[0048] The present embodiment is different from the first embodiment in that: specifically, a limit cylinder 76 is installed above the spring block 73 , and a limit block 75 is installed on the output end of the limit cylinder 76 .

[0049] By adopting the above technical solution, the movement of the spring piece 74 is limited.

[0050] Example 5

[0051] Specifically, further, the implementation method of the electric toothbrush detection machine described in the present invention comprises the following steps:

[0052] (i) The operator places the electric toothbrush on the electric toothbrush placement seat 66, and the clamping positioning cylinder 63 drives the clamping block 64 to move, so that the electric toothbrush is clamped;

[0053] (ii) The ejection cylinder 62 drives the ejection block 68 to be pushed out, so that the cushion block 610 is located in the sharp angle bend of the electric toothbrush bent copper sheet 9, and the lifting cylinder 69 drives the probe 67 to rise and press against the electric toothbrush bent copper sheet 9, while the electric cylinder 72 drives the spring sheet 74 to press against one end of the resonator;

[0054] (III) Start the test. First, the PLC controller applies a sinusoidal voltage, then disconnects the power supply, collects and records the displacement of the resonator driver and the oscillation curve of its back electromotive force in real time, calculates the frequency and damping coefficient of the driver through the displacement curve, and then obtains the speed curve based on the displacement curve, and calculates the motor constant in conjunction with the back electromotive force. The displacement is detected by the laser displacement sensor 54;

[0055] (4). Parameter detection steps of the resonator: The electric cylinder 72 pushes the resonator for displacement and then quickly releases it. The laser displacement sensor 54 collects and records the displacement curve in real time; the frequency and damping coefficient of the resonator are calculated through the displacement curve.

[0056] (5). After the test is completed, the staff replaces the product and continues the detection.

[0057] In summary, through the cooperation of the first laser displacement sensor assembly 5, the resonator test assembly 7, and the second laser displacement sensor assembly 8, the present invention realizes the automatic testing of the amplitude and frequency of the electric toothbrush driver and the resonator, improves the testing efficiency and accuracy, reduces the labor intensity of the staff, and can automatically save the test data; an elevating cylinder 69 is installed inside the test base 61 of the present invention, and a probe 67 corresponding to the bent copper sheet 9 of the electric toothbrush is connected to the output end of the elevating cylinder 69. The elevating cylinder 69 drives the probe 67 to abut against the bent copper sheet 9 of the electric toothbrush, and the contact position and abutting pressure between the probe 67 and the bent copper sheet 9 of the electric toothbrush are controllable, thereby ensuring the testing accuracy; a ejecting cylinder 62 is also installed on the test base 61 of the present invention. A ejecting block 68 is installed at the output end of the ejecting cylinder 62, and a cushion block 610 corresponding to the bent copper sheet 9 of the electric toothbrush is installed on the ejecting block 68. The ejecting cylinder 62 drives the ejecting block 68 to push out, so that the cushion block 610 is located inside the acute-angle bend of the bent copper sheet 9 of the electric toothbrush to support the bent copper sheet 9 of the electric toothbrush and prevent the bent copper sheet 9 of the electric toothbrush from deforming too much and being unable to reset.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric toothbrush testing machine, comprising a frame, Features: A human-machine interaction interface is installed at the upper end of the frame, and a test fixture is also installed on the frame. The test fixture includes a bottom plate, and a test bench is installed in the middle position above the bottom plate. A first laser displacement sensor assembly is provided on one side of the test bench, and a second laser displacement sensor assembly is installed on the other end of the test bench. A resonator test assembly is provided on one side of the second laser displacement sensor assembly. The first laser displacement sensor assembly, the test bench, the resonator test assembly, and the second laser displacement sensor assembly are all connected to the PLC controller signal; The test bench includes a test base, an electric toothbrush placement seat is arranged above the test base, a clamping positioning cylinder is arranged on one side of the electric toothbrush placement seat, a clamping block is connected to the output end of the clamping positioning cylinder, a lifting cylinder is installed inside the test base, and a probe corresponding to the bent copper sheet of the electric toothbrush is connected to the output end of the lifting cylinder; The resonator test assembly comprises an electric cylinder mounting seat, an electric cylinder is mounted on the electric cylinder mounting seat, a spring block is mounted on the output end of the electric cylinder, and a spring sheet is mounted on the spring block.

2. An electric toothbrush detection machine according to claim 1, Features: A slider guide rail is installed above the test base, and the clamping block is installed on the slider of the slider guide rail.

3. An electric toothbrush detection machine according to claim 1, Features: A material-lifting cylinder is also installed on the test base, a material-lifting block is installed on the output end of the material-lifting cylinder, and a pad corresponding to the bent copper sheet of the electric toothbrush is installed on the material-lifting block.

4. The electric toothbrush detection machine according to claim 1, Features: The first laser displacement sensor assembly comprises a movable adjustment rail, a connecting plate is installed on a slider of the movable adjustment rail, a two-axis displacement adjustment platform is installed on the connecting plate, and a laser displacement sensor is installed on the two-axis displacement adjustment platform.

5. An electric toothbrush detection machine according to claim 4, Features: The structure of the second laser displacement sensor assembly is the same as that of the first laser displacement sensor assembly.

6. The electric toothbrush detection machine according to claim 1, Features: A limit cylinder is installed above the spring block, and a limit block is installed on the output end of the limit cylinder.

7. A method for implementing an electric toothbrush detection machine according to any one of claims 1 to 6, It is characterized in that The following steps are involved: (a) The operator places the electric toothbrush on the electric toothbrush placement seat, and the clamping positioning cylinder drives the clamping block to move, so that the electric toothbrush is clamped; (ii) The ejection cylinder drives the ejection block to be pushed out, so that the pad is in the sharp bend of the electric toothbrush copper sheet, and the lifting cylinder drives the probe to rise and support the electric toothbrush copper sheet. At the same time, the electric cylinder drives the spring sheet to press against one end of the resonator; (III) Start the test. First, the PLC controller applies a sinusoidal voltage, then disconnects the power supply, collects and records the displacement of the resonator driver and the oscillation curve of its back electromotive force in real time, calculates the frequency and damping coefficient of the driver through the displacement curve, and then obtains the speed curve based on the displacement curve, and calculates the motor constant in conjunction with the back electromotive force. The displacement is detected by a laser displacement sensor; (IV) Parameter detection steps of the resonator: the electric cylinder pushes the resonator to move and releases it quickly, and the laser displacement sensor collects and records the displacement curve in real time; the frequency and damping coefficient of the resonator are calculated through the displacement curve; (V) After the test is completed, the staff will replace the product and continue the test.

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