Life test equipment and systems

Abstract

The present invention provides a life test device and system, comprising: a control module, a switch driver module, a water spray module, and a dust removal module, all of which are connected to the control module; the switch driver module is provided with a slot-type photoelectric switch and at least one switch to be tested; the water spray module is used to spray water onto the switch to be tested; the dust removal module is used to shake dust off onto the switch to be tested; the switch driver module is used to drive the switch to be tested; and the control module is used to collect the switch signal output by the switch to be tested and the reference on-off signal output by the slot-type photoelectric switch, and determine whether the switch to be tested is in a normal output state based on the switch signal and the reference on-off signal. In this method, the waterproof and dustproof performance of the power tool switch can be evaluated in real time during the life test process. The test mode is flexible and versatile, and the test method is more suitable for the actual working conditions of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of electric tool switches, and in particular to a life testing device and system. Background Art

[0002] The existing life test equipment for power tool switch products has a single function and can only perform traditional life tests. If you want to perform waterproof and dustproof tests based on the life test, you need to disassemble the machine after the life test is completed and then use other test equipment to evaluate the waterproof and dustproof performance of the product.

[0003] Furthermore, traditional water and dust resistance testing requires two separate devices, and it is impossible to verify the product's functionality in real time during the test. Therefore, there is currently no device on the market that can evaluate the water and dust resistance performance of power tool switches in real time during life testing. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a life test device and system to evaluate the waterproof and dustproof performance of the power tool switch in real time during the life test. The test mode is flexible and versatile, and the test method is more in line with the actual working conditions of the product.

[0005] In the first aspect, an embodiment of the present invention provides a life test device, which includes: a control module, a switch drive module, a water spray module and a dust collection module, wherein the switch drive module, the water spray module and the dust collection module are all connected to the control module; a slot-type photoelectric switch and at least one switch to be tested are provided in the switch drive module; the water spray module is used to spray water to the switch to be tested; the dust collection module is used to shake off dust to the switch to be tested; the switch drive module is used to drive the switch to be tested to operate; the control module is used to collect the switch signal output by the switch to be tested and the reference on-off signal output by the slot-type photoelectric switch, and determine whether the switch to be tested is in a normal output state based on the switch signal and the reference on-off signal.

[0006] In an optional embodiment of the present application, the above-mentioned switch drive module includes: a first servo motor and a rotating shaft, on which a plurality of eccentric wheels and a plurality of switch test positions are provided, wherein the eccentric wheels and the switch test positions correspond one to one; the first servo motor is used to drive the rotating shaft to rotate, the eccentric wheel on the rotating shaft rotates eccentrically, and the switch test position is actuated.

[0007] In an optional embodiment of the present application, the above-mentioned water spray module includes: a pressurized water pump and a universal nozzle, and the universal nozzle is directed toward the switch to be tested; the water in the water spray module is pressurized by the pressurized water pump and then sprayed toward the switch to be tested through the universal nozzle.

[0008] In an optional embodiment of the present application, the above-mentioned dust collection module includes: a dust hopper, a second servo motor, a screw rod and a trough; the discharge port of the trough is arranged above the eccentric wheel; the dust in the dust hopper falls into the gap between the screw rod and the trough through the feed port of the trough; the second servo motor is used to drive the screw rod to rotate and transport the dust to the discharge port of the trough, and the dust is shaken off from the discharge port of the trough to the eccentric wheel, and the dust is shaken off to the switch to be tested as the eccentric wheel rotates.

[0009] In an optional embodiment of the present application, a discharge recovery port is provided below the above-mentioned material trough, and the discharge recovery port is used to recover the remaining dust in the spiral rod.

[0010] In an optional embodiment of the present application, the above-mentioned life test device also includes: an industrial control touch screen, which is connected to the control module; the industrial control touch screen is used to respond to the user's parameter setting operation and determine the parameters of the life test device; wherein the parameters include at least one of the following: number of water sprays, water spray time, water spray interval, number of dust falling, dust falling time, dust falling interval, and dust falling amount.

[0011] In a second aspect, an embodiment of the present invention further provides a life test system, which includes: a host computer and the above-mentioned life test device; the host computer and the life test device are connected; the host computer is used to respond to the user's parameter setting operation and determine the parameters of the life test device.

[0012] In an optional embodiment of the present application, the control module of the above-mentioned life test device is also used to send the switch signal and the reference on-off signal to the host computer; the host computer is also used to draw a test chart of the switch to be tested based on the switch signal and the reference on-off signal.

[0013] In an optional embodiment of the present application, the above-mentioned life test system also includes: an oscilloscope; the oscilloscope is connected to a host computer; the host computer is also used to determine the waveform signal of the switch to be tested based on the switch signal and the reference on-off signal, and send the waveform signal to the oscilloscope; the host computer is also used to determine whether the switch to be tested is in a normal output state based on the waveform signal sent by the oscilloscope; the oscilloscope is used to display the waveform signal.

[0014] In an optional embodiment of the present application, the above-mentioned life test system also includes: a server; the server is connected to a host computer; the host computer is also used to send switch signals, reference on-off signals and test charts to the server; the server is used to save switch signals, reference on-off signals and test charts.

[0015] The embodiments of the present invention bring the following beneficial effects:

[0016] Embodiments of the present invention provide a life test device and system. A water spray module sprays water onto a switch under test; a dust removal module shakes dust off the switch under test; a switch driver module activates the switch under test; and a control module collects the switch signal output by the switch under test and the reference on / off signal output by a slot-type photoelectric switch. Based on the switch signal and the reference on / off signal, the control module determines whether the switch under test is in a normal output state. This method allows for real-time evaluation of the water and dust resistance of power tool switches during life testing. The test modes are flexible and versatile, and the testing method is more tailored to the actual operating conditions of the product.

[0017] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by practicing the above-mentioned technology of the present disclosure.

[0018] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a life test device provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a switch driving module provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of a water spray module provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a dust removal module provided in an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a life test system provided by an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of a life test system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] Currently, existing life testing equipment for power tool switches is limited in functionality and can only perform traditional life testing. If you wish to perform a water and dust resistance test in addition to the life testing, you must disassemble the device after the life test is complete and then use other testing equipment to evaluate the product's water and dust resistance. Furthermore, traditional water and dust resistance testing requires two separate devices, and it is impossible to verify the product's functionality in real time during the test. Therefore, there is currently no device on the market that can evaluate the water and dust resistance of power tool switches in real time during the life test.

[0028] Based on this, embodiments of the present invention provide a life test device and system, specifically a waterproof and dustproof life tester for power tool switches. This device is suitable for testing the waterproof and dustproof life reliability of power tool switches. It integrates water spraying, dust fallout, and life tester functions, allowing for configurable water spraying or dust fallout times, durations, and water and dust fallout volumes. It can perform either a single waterproof or dustproof test, or both simultaneously, and automatically detects test data throughout the entire test process and determines the results.

[0029] To facilitate understanding of this embodiment, a life test device disclosed in an embodiment of the present invention is first introduced in detail.

[0030] Example 1:

[0031] The embodiment of the present invention provides a life test device, see Figure 1 The diagram shows a schematic diagram of the structure of a life test device, which includes: a control module, a switch drive module, a water spray module, and a dust collection module, wherein the switch drive module, the water spray module, and the dust collection module are all connected to the control module; the switch drive module is provided with a slot-type photoelectric switch and at least one switch to be tested;

[0032] The water spray module is used to spray water onto the switch to be tested; the dust removal module is used to shake off dust onto the switch to be tested; the switch drive module is used to drive the switch to be tested to operate; the control module is used to collect the switch signal output by the switch to be tested and the reference on-off signal output by the slot-type photoelectric switch, and determine whether the switch to be tested is in a normal output state based on the switch signal and the reference on-off signal.

[0033] The mechanical part of the life test device of this embodiment includes a base, a water tank, a switch drive device, a water spray module and a dust removal module; the electrical control part consists of a host computer, a slave computer (programmable logic controller, industrial control touch screen, etc.) and control elements (servo motor, etc.).

[0034] Among them, the clean water or prepared salt water in the water spray module is pressurized by a pressurized water pump to the universal nozzle corresponding to each switch and sprayed toward the switch to be tested. The direction of the nozzle can be adjusted freely, and the water spray size, number of sprays and interval length can also be set arbitrarily.

[0035] The dust collection module consists of a dust hopper, a second servo motor, and a spiral screw. The second servo motor drives the spiral screw, which conveys dust from the dust hopper to the dust collection port above the eccentric wheel. The dust then falls onto the eccentric wheel and onto the switch. The amount of dust collected can be adjusted by the second servo motor's rotation speed, and the dust collection duration and interval can be set arbitrarily.

[0036] Therefore, the life test device of this embodiment can combine water spraying, dust falling and life test devices into one. The number of water spraying or dust falling, time and water spraying amount and dust falling amount can be set arbitrarily, and the waterproof and dustproof life test machine can automatically detect the test data of the entire process to meet diverse testing needs.

[0037] An embodiment of the present invention provides a life test device comprising a water spray module that sprays water onto a switch under test; a dust removal module that shakes dust off the switch under test; a switch driver module that actuates the switch under test; and a control module that collects a switch signal from the switch under test and a reference on / off signal from a slot-type photoelectric switch, and determines whether the switch under test is in a normal output state based on the switch signal and the reference on / off signal. This method allows for real-time evaluation of the water and dust resistance of power tool switches during the life test, offering flexible and versatile testing modes that better align with the product's actual operating conditions.

[0038] Example 2:

[0039] An embodiment of the present invention provides another life testing device, in which a switch driving module includes: a first servo motor and a rotating shaft, on which a plurality of eccentric wheels and a plurality of switch test positions are provided, wherein the eccentric wheels and the switch test positions correspond one to one; the first servo motor is used to drive the rotating shaft to rotate, the eccentric wheel on the rotating shaft rotates eccentrically, and the switch test position is actuated.

[0040] See also Figure 2 The schematic diagram of a switch drive module shown is that the switch drive module is driven by a first servo motor to drive the rotating shaft. There are six eccentric wheels on the rotating shaft corresponding to six switch test positions. When the first servo motor drives the rotating shaft to rotate one circle, the eccentric wheels on the rotating shaft rotate eccentrically, pressing the switch to open or close a cycle.

[0041] Specifically, the water spray module of the life test device includes: a pressurized water pump and a universal nozzle, and the universal nozzle is directed toward the switch to be tested; the water in the water spray module is pressurized by the pressurized water pump and then sprayed toward the switch to be tested through the universal nozzle.

[0042] See also Figure 3 The schematic diagram of a water spray module is shown in FIG. The clean water or prepared salt water in the water spray module is subjected to 3 kg / cm 2 The water is pumped to the pressurized outlet via six hoses connected to six tees. Each outlet is equipped with a universal nozzle corresponding to a switch test position. The nozzle is universally adjustable, allowing for easy control of the water spray direction, meeting the IPX56 waterproof test requirement of spraying water from all possible directions onto a properly installed switch. The water spray volume can be adjusted by rotating the nozzle nut clockwise or counterclockwise. The spray duration and interval can be set on the host computer interface or the slave industrial control touch screen.

[0043] Specifically, the dust removal module of the life test device includes: a dust hopper, a second servo motor, a screw rod and a trough; the feeding port of the trough is arranged above the eccentric wheel; the dust in the dust hopper falls into the gap between the screw rod and the trough through the feeding port of the trough; the second servo motor is used to drive the screw rod to rotate and transport the dust to the feeding port of the trough, and the dust is shaken off from the feeding port of the trough to the eccentric wheel, and the dust is shaken off to the switch to be tested as the eccentric wheel rotates.

[0044] See also Figure 4 The schematic diagram of a dust collection module is shown. The module consists of a dust hopper, a second servo motor, a screw, and a six-station trough. Dust in the dust hopper first falls into the gap between the screw and the six-station trough through the six feed ports of the six-station trough. The second servo motor drives the screw to rotate, conveying dust to the six discharge ports of the six-station trough. These six discharge ports are located directly above the six eccentric wheels. After falling on the eccentric wheels, the dust is rotated and falls onto the switch. The amount of dust collected can be adjusted by the speed of servo motor 2. The dust collection duration and interval can be set on the upper computer interface or the lower computer industrial control touch screen.

[0045] In addition, a discharge and recovery port is provided below the trough, which is used to recover the remaining dust in the screw rod. Figure 4 As shown, residual dust discharge and recovery ports are provided at the bottom of both ends of the six-station trough to recover the residual dust in the screw rod, which can avoid the screw rod from being stuck due to excessive residual dust and improve the utilization rate of dust.

[0046] Among them, the dust used in the dustproof test is A2 fine test dust. The size of A2 fine dust ranges from 0 to 80 microns, and its properties meet the standard requirements of ISO12103-1.

[0047] In addition, the life test device of this embodiment also includes: an industrial control touch screen, which is connected to the control module; the industrial control touch screen is used to respond to the user's parameter setting operation and determine the parameters of the life test device; wherein the parameters include at least one of the following: number of water sprays, water spray time, water spray interval, number of dust falling, dust falling time, dust falling interval, and dust falling amount.

[0048] The control module can be connected to the industrial control touch screen via the RS232 serial port to interact with the interface data. The user can input the parameters of the life test device through the industrial control touch screen, and the switch drive module, water spray module and dust removal module will operate according to the parameters entered by the user.

[0049] The life test device provided in this embodiment can not only perform a single waterproof or dustproof test, but also test both at the same time. The number of water spraying or dust falling, time and water spraying volume, and dust falling volume can be set arbitrarily, and the test mode is flexible and versatile.

[0050] During the life test, this embodiment can simultaneously perform a waterproof and dustproof test, and can evaluate the waterproof and dustproof performance of the product during the life test in real time. This testing method is more in line with the actual working conditions of the product.

[0051] The dust module in this embodiment uses a spiral conveyor system to ensure uniform dust distribution. The water spray module in this embodiment uses a universal nozzle, meeting the IPX56 test requirement that the nozzle spray water from all possible directions toward a properly installed switch. The A2 fine dust used in the dustproof test in this embodiment has properties that meet the requirements of ISO12103-1, providing a more standardized test.

[0052] Example 3:

[0053] The embodiment of the present invention provides a life test system, see Figure 5 The structure diagram of a life test system shown in the figure includes: a host computer and a life test device; the host computer and the life test device are connected; the host computer is used to respond to the user's parameter setting operation and determine the parameters of the life test device.

[0054] In addition to inputting parameters through the industrial control touch screen, users can also enter parameters through the host computer. The host computer can communicate with the life test system's control module via a USB to RS232 interface. A custom program is used to set parameters such as water spray, dust fallout, and life test cycles, which are then transmitted to the life test system's control module for execution. The test data is then captured, visualized, and uploaded to a server.

[0055] Example 4:

[0056] The embodiment of the present invention provides a life test system, see Figure 6 As shown in the schematic diagram of a life test system, the control module of the life test device is also used to send the switch signal and the reference on-off signal to the host computer; the host computer is also used to draw a test chart of the switch to be tested based on the switch signal and the reference on-off signal.

[0057] Both the upper and lower computers can set the parameters of water spraying, dust removal and life test. The upper computer writes into the control module of the lower computer through the USB to RS232 serial port. The control module controls the second servo motor and the pressurized water pump to spray water and remove dust according to the program through the program and set parameters; controls the first servo motor to drive the rotation of the shaft, and then drives the eccentric wheel to press the switch periodically. The control module collects the switch signal of the test product through the signal processing module, and collects the signal of the slot-type photoelectric switch installed on the shaft rotating device as the reference on-off signal to determine whether the output of the switch is normal. Once the test is abnormal, the test will be stopped immediately, and an alarm will be sounded to remind the staff to check the test site in time and upload it to the upper computer.

[0058] After receiving the data uploaded by the control module, the host computer determines whether the switch under test is in a normal output state based on the set threshold. If the switch under test is abnormal, a stop command is sent, and the test is immediately stopped. The relevant test curve is generated on the control interface and uploaded to the server for cloud sharing.

[0059] like Figure 6 As shown, the life test device also includes: an oscilloscope; the oscilloscope is connected to a host computer; the host computer is also used to determine the waveform signal of the switch to be tested based on the switch signal and the reference on-off signal, and send the waveform signal to the oscilloscope; the host computer is also used to determine whether the switch to be tested is in a normal output state based on the waveform signal sent by the oscilloscope; the oscilloscope is used to display the waveform signal.

[0060] The life test system in this embodiment can be integrated with an oscilloscope. The oscilloscope can capture the switch waveform in real time, analyze it using a custom program, and identify product anomalies. The integrated oscilloscope in this embodiment monitors the product's output signal in real time and records the entire process data, making product function testing more convenient and quick.

[0061] The host computer can determine whether the switch to be tested is normal based on the waveform signal of the oscilloscope. For example, the host computer can determine whether the switch to be tested is normal based on the waveform, upper limit or lower limit of the waveform signal.

[0062] like Figure 6 As shown, the life test device also includes a server; the server is connected to a host computer; the host computer is further configured to send the switch signal, the reference on / off signal, and the test chart to the server; and the server is configured to store the switch signal, the reference on / off signal, and the test chart. The server can store the reference on / off signal and the test chart for subsequent review.

[0063] Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working process of the intelligent life test system described above can refer to the corresponding process in the aforementioned embodiment of the intelligent life test device, and will not be repeated here.

[0064] In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0065] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0066] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A life test device, characterized in that: Used for waterproof and dustproof life reliability testing of power tool switch products, the life testing device includes: a control module, a switch drive module, a water spray module, and a dust collection module, wherein the switch drive module, the water spray module, and the dust collection module are all connected to the control module; the switch drive module is provided with a slot-type photoelectric switch and at least one switch to be tested; The water spray module is used to spray water onto the switch to be tested; The dust removal module is used to shake off dust onto the switch to be tested; The switch driving module is used to drive the switch to be tested; The control module is used to collect the switch signal output by the switch to be tested and the reference on-off signal output by the slot-type photoelectric switch, and determine whether the switch to be tested is in a normal output state based on the switch signal and the reference on-off signal; The water spray module includes: a pressurized water pump and a universal nozzle, wherein the universal nozzle is directed toward the switch to be tested; water in the water spray module is pressurized by the pressurized water pump and then sprayed toward the switch to be tested through the universal nozzle; The switch driving module comprises: a first servo motor and a rotating shaft, wherein a plurality of eccentric wheels and a plurality of switch test positions are provided on the rotating shaft, wherein the eccentric wheels correspond to the switch test positions one by one; The dust removal module includes: a dust hopper, a second servo motor, a screw rod and a material trough; the material outlet of the material trough is arranged above the eccentric wheel; The dust in the dust hopper falls into the gap between the screw rod and the trough through the inlet of the trough; The second servo motor is used to drive the screw rod to rotate, transporting the dust to the dropout port of the material trough, and the dust is shaken off from the dropout port of the material trough to the eccentric wheel. The dust is shaken off to the switch to be tested as the eccentric wheel rotates.

2. The life test device according to claim 1, characterized in that: The first servo motor is used to drive the rotating shaft to rotate, so that the eccentric wheel on the rotating shaft rotates eccentrically, and the switch test position is actuated.

3. The life test device according to claim 1, characterized in that: A discharge recovery port is provided below the material trough, and the discharge recovery port is used to recover the remaining dust in the spiral rod.

4. The life test device according to claim 1, characterized in that: The life test device further includes: an industrial control touch screen connected to the control module; The industrial control touch screen is used to respond to the user's parameter setting operation to determine the parameters of the life test device; wherein the parameters include at least one of the following: number of water sprays, water spray time, water spray interval, number of dust falling, dust falling time, dust falling interval, and dust falling amount.

5. A life test system, characterized in that: The life test system comprises: a host computer and the life test device according to any one of claims 1 to 4; the host computer and the life test device are connected; The host computer is used to respond to the parameter setting operation of the user and determine the parameters of the life test device.

6. The life test system according to claim 5, characterized in that: The control module of the life test device is further configured to send the switch signal and the reference on-off signal to the host computer; The host computer is further configured to draw a test chart of the switch to be tested based on the switch signal and the reference on-off signal.

7. The life test system according to claim 6, characterized in that: The life test system further includes: an oscilloscope; the oscilloscope is connected to the host computer; The host computer is further configured to determine a waveform signal of the switch to be tested based on the switch signal and the reference on-off signal, and send the waveform signal to the oscilloscope; the host computer is further configured to determine whether the switch to be tested is in a normal output state based on the waveform signal sent by the oscilloscope; The oscilloscope is used to display the waveform signal.

8. The life test system according to claim 6, characterized in that: The life test system further includes: a server; the server is connected to the host computer; The host computer is further configured to send the switch signal, the reference on / off signal, and the test chart to the server; The server is used to store the switch signal, the reference on-off signal and the test chart.

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