CN220278549U

CN220278549U - Device for protecting eyes of welder based on Internet of things welding system

Info

Publication number: CN220278549U
Application number: CN202321339850.5U
Authority: CN
Inventors: 俞凯; 简捷; 钟道宽; 贾红涛
Original assignee: Dongguan Xiaozhi Intelligent Equipment Co ltd; Shanghai Innotec Co ltd
Current assignee: Dongguan Xiaozhi Intelligent Equipment Co ltd; Shanghai Innotec Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2024-01-02
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a device for protecting eyes of welders based on a welding system of the Internet of things, wherein a wireless signal receiver and an optical element connected with the wireless signal receiver are arranged on a protection mask; a wireless signal transmitter and an instruction switch are arranged on the welding gun; the instruction switch is provided with a front micro-switch for activating the wireless signal transmitter and a rear micro-switch for activating a process flow starting instruction; after the instruction switch is pressed, the front micro switch is firstly closed to activate the wireless signal transmitter to send out a wireless signal, and the wireless signal receiver on the protection mask controls the circuit connected with the wireless signal receiver to send out an electric signal to the optical element after receiving the wireless signal, so that the optical element changes the light transmittance of the optical element under the action of the electric signal; and the rear micro-switch in the command switch is closed after the front micro-switch, so that the welding gun is driven to start to set a welding process flow. The act of darkening the optical element is to protect the welder's eyes before the arc is generated.

Description

Device for protecting eyes of welder based on Internet of things welding system

Technical Field

The utility model relates to the field of welding and cutting, in particular to a device for protecting eyes of welders based on an internet of things welding system.

Background

A strong luminescence phenomenon occurs when welding and cutting operations are performed. These lights are not only extremely bright but also very complex in composition, including infrared light, ultraviolet light, visible light, and the like. These intense rays are very dangerous to the operator, especially the eyes of the operator. In order to protect eyes from such glare, both operators and persons in the range of glare vision need to wear protective devices, such as welding protective masks, welding goggles, welding helmets, etc.

The above-described protection devices can be classified into two types of variable light and non-variable light. The non-variable light protection device requires an operator to operate the protection device with one hand and the welding gun with one hand, and this type of protection device is very inconvenient and affects the welding operation of the welding operator. The operator of the variable light protection mask can effectively protect eyes only by wearing the mask correctly, and the operator does not need to hold the mask by hand. The welding operation of operators is greatly facilitated. However, the self-dimming protection device changes the light transmittance of the self-dimming protection device after being irradiated by arc light to limit the intense light and heat to be input into the visual field. The darkening process is theoretically very short, but in practice there is still a portion of the glare coming into view before the protective device darkens. In order to avoid this, it is particularly necessary to provide a protection device that darkens the arc before it reaches the field of view.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a device for protecting eyes of welders based on an internet of things welding system, which can effectively solve at least one of the problems. In the device, the command switch is pressed, the front micro switch in the switch command is firstly closed, a wireless signal is sent out through a wireless signal transmitter connected with the front micro switch in the handle, a wireless signal receiver on the protection mask receives a signal, a circuit connected with the front micro switch sends out an electric signal to the optical element, and the optical element changes the light transmittance of the optical element under the action of the electric signal, so that the intensity of arc light is limited. The rear micro switch in the command switch is closed after the front micro switch, and the welding gun is driven to start to set the start of the welding process. The protective mask has darkened when the welding process begins to arc, which may be a very short time. But the darkening action is prior to the arc generation. The protective mask in the device system is worn on the head of an operator, so that the welding operation of the operator is convenient. The protective mask in the device has a self-darkening function, and has a certain protective function when being irradiated by arc light emitted by a welding gun in a non-self device.

The technical scheme of the utility model is as follows: a device for protecting eyes of a welder based on an internet of things welding system comprises a protective mask capable of receiving wireless signals and a welding gun capable of transmitting the wireless signals;

the protective mask is provided with a wireless signal receiver and an optical element connected with the wireless signal receiver;

a wireless signal transmitter and an instruction switch are arranged on the welding gun; the instruction switch is provided with a front micro-switch for activating the wireless signal transmitter and a rear micro-switch for activating a process flow starting instruction;

after the instruction switch is pressed, the front micro switch is firstly closed to activate the wireless signal transmitter to send out a wireless signal, and the wireless signal receiver on the protection mask controls the circuit connected with the wireless signal receiver to send out an electric signal to the optical element after receiving the wireless signal, so that the optical element changes the light transmittance of the optical element under the action of the electric signal; and the rear micro-switch in the command switch is closed after the front micro-switch, so that the welding gun is driven to start to set a welding process flow. The action of the front-facing micro-switch for activating the wireless signal transmitter and the rear-facing micro-switch for activating the process flow start instruction may be non-connective.

The communication signal between the signal receiver and the signal transmitter is a radio wave signal, has the diffraction property of electric waves, and still has reliable signal transmission when an object is blocked between the signal transmitter and the signal receiver.

The command switch in the device can adapt to the command switch and the welding gun handle which are common in most markets, and a single micro switch in the common command switch in the markets is changed into a double micro switch which is common on the original handle. The development cost can be saved, and the application range can be increased.

Furthermore, the front micro-switch and the rear micro-switch are sequentially closed through the travel mechanism, and the idle travel of the front micro-switch is smaller than that of the rear micro-switch.

In the dimming process under the control of the wireless signal, the wireless signal may be always present after the command switch is pressed, or may be turned off after a certain period of time after the command switch is pressed, and preferably turned off after a certain period of time. The signal of disconnection can be a change signal of current in a welding gun cable or a signal of arc generation. Preferably, the current in the gun is varied. Shortening the signaling period may reduce energy consumption, especially if the signal transmitter and signal receiver power sources of the device are batteries or the like, and may extend the power life of these batteries or the like. Specifically, the device for protecting eyes of welders based on the internet of things welding system further comprises a welding current detection element, wherein the welding current detection element is connected with the wireless signal transmitter, and when the welding current detection element detects welding current, the wireless signal transmitter is controlled to stop transmitting signals. The welding current detecting element is mounted in the handle of the welding gun or in the welding cable.

Further, the wireless signal transmitter is connected to a welding power supply through a cable of the welding gun to obtain power, or connected to a cable with a plug of the welding gun to obtain power, or is independently matched with a special rechargeable battery pack power. Specifically, two micro-switches are installed on a circuit board of a PCB, and a plug connector is arranged on the PCB and used for connecting a power supply and a control signal wire. The PCB optionally receives a portion of the welding gun cable from the welding power source, receives power from the welding power source, optionally connects a portion of the welding gun cable, connects the other end of the portion of the welding gun cable to the mains power outlet to receive power from the power outlet, optionally connects a portion of the welding gun cable, and terminates the other end of the portion of the welding gun cable in a separate rechargeable battery compartment.

Further, the optical element is provided with a photosensitive element, so that the light transmittance can be automatically adjusted under the irradiation of arc light.

Further, the welding gun or the protection mask is provided with a matching button which can be used for matching the welding gun or the protection mask and transmitting wireless signals. The matching button is arranged in a small hole on the protection mask and is fixed by a self-contained nut. More interference signals are likely to exist in a welding field, a signal transmitter and a signal receiver in the device can transmit signals with wider frequency bands, and signals with other frequencies can be manually adjusted and selected for transmission under the condition of interference. The mutual interference between different devices can be avoided when the devices in the same place work together, and the reliable operation between the devices can be ensured by adjusting the different transmission frequencies of the devices. The protective mask and the welding gun need to be paired before use, and the receiver in the protective mask will not receive wireless signals sent by other welding guns after matching is carried out by mutually exclusive identity codes, and if the welding gun needs to be replaced or the protective mask needs to be matched again.

Further, the power supply of the optical element is a solar battery or a rechargeable battery or other small batteries.

Further, the protective mask is a welding helmet, a welding mask, a welding goggles or a welding shield with an automatic dimming function and wireless signal receiving capability.

The process of self-darkening the protective mask in the device is shown below:

1: arc light generation

2: the optical element is irradiated

3: darkening of optical elements

The process of darkening a protective mask in a device under control of a wireless signal is shown below

1: the instruction switch is pressed down, the front micro switch is closed, and the transmitter sends out a wireless signal

2: the signal receiver receives the signal, and the optical element darkens under the electrical signal

3: closing the rear microswitch to generate arc light

It can be seen that in the self-darkening process that protects the optics in the mask, some of the glare in the arc is transmitted into the user's view before the mask, while darkening of the optics in the device under the control of the wireless signal is such that the glare in the arc is not transmitted into the user's view until the arc reaches the user's range.

In the dimming process under the control of a wireless signal, the dimming of the optical element is advanced to the occurrence of arc light, and the advanced time depends on the speed of pressing the instruction switch by an operator and the distance between the front micro switch and the rear micro switch. The distance between the front and rear micro-switches is preferably controlled between 1-20 mm.

The signal receiver in the device is placed in the protective mask, is integrated with the control circuit of the protective mask, can reduce development cost, and can be partially interchanged with optical elements in the market. The application range can be effectively improved. But is not limited to being integral with the protective mask and may be placed at various locations on the mask, with the optical elements preferably integral with the protective mask being attached by a flexible cord connection or the like.

The device has the advantages that when the welding gun is not in the visual field range, the protective mask can still be effectively darkened, and the phenomenon that the visual field of an operator is blocked or the movable head turns to lose protection in the operation process is avoided. This benefits from the high penetration of wireless transmissions, even if the signal transmitter on the welding gun is not facing the mask, or if there is a barrier (e.g., a weld frame) between the two, still provides effective protection.

Drawings

FIG. 1 is a schematic illustration of a manual welding gun transmitting wireless signals, a protective mask receiving wireless signals, and associated equipment.

Fig. 2 is used for a switch on a welding gun and a PCB board with the switch mounted together, two micro switches on the PCB.

Fig. 3 is a timing diagram of a welding process according to the present utility model.

FIG. 4 is a schematic diagram of a travel mechanism on a command switch in the present utility model.

Fig. 5 is a functional block diagram of a control circuit PCB on a protective mask in accordance with the present utility model.

FIG. 6 is a functional block diagram of a control circuit PCB on a welding gun in the present utility model.

Fig. 7 shows a welding gun and an euro-type coupling plug for the welding gun, wherein a PCB control circuit in the welding gun obtains a power supply through the coupling plug.

FIG. 8 is a system schematic logic diagram of the apparatus of the present utility model.

Fig. 9 scenario example 1.

Fig. 10 illustrates scenario 2.

Fig. 11 gun and European coupling plug of welder, PCB control circuit in gun is powered by PCB circuit board matched rechargeable battery case in European coupling plug.

Symbol list

Detailed Description

The utility model discloses a device for protecting eyes of welders based on an internet of things welding system, which is further described in detail with reference to the accompanying drawings.

The utility model shown in fig. 1 is based on the integration of a wireless network for common tools in welding into one system device. Information can be communicated between the protective mask 4 and the welding gun 5 in the device diagram 1. The protective mask 4 may be darkened for protection before the arc is struck by the welding gun 5 as shown in fig. 3. And the darkening of the protective mask 4 before the system is not integrated is after 0.1-0.15 seconds of arc occurrence of the welding gun 5. During this time the arc light is visible, which is detrimental to the operator's eye health and use experience.

According to fig. 7, the welding machine and the welding gun are connected through an European coupling plug connector, a pair of pins in the European coupling plug connector can provide direct current power of 5V, and the PCB shown in fig. 2 in the welding gun is connected to a 5V power pin. The front micro-switch 8 in the illustration 2 is a signal input element of the PCB board, and when the instruction switch is pressed down to close the front micro-switch 8, a high frequency generator in the PCB board generates high frequency to send out a switch signal through the signal generator. The signal transmitter is fixed inside the handle 16 with glue and connected to the PCB by a flexible cord. The PCB board is fixed on the instruction switch. The rear micro switch 9 on the PCB board is connected to the euro-type coupling plug 15 through a welding gun cable as a start switch element of the welding process. When the starting switch is pressed, the front micro switch 8 is firstly closed, and the rear micro switch 9 is then closed.

The protective mask is put on, and meanwhile, one hand presses the matching button 7 in the diagram 1 and the other hand presses the instruction switch 6 for three seconds, the welding gun is automatically connected with the protective mask, and after 3 seconds, the mask darkens, so that the matching is finished. The matching button 7 in fig. 1 is mounted in a small hole in the protective mask 4 and is fixed by a self-contained nut and is connected to the control integrated circuit of the optical element 3 by a flexible wire, the signal receiver 1 in fig. 1 can be integrated into the control integrated circuit of the optical element 3 or it can be mounted at other positions of the protective mask 4 by a flexible wire connection. The control integrated circuit of the optical element 3 and the optical element 3 are one piece and are fixed to the protective mask 4 by a clamp or a screw. The signal receiver 1 in fig. 5 receives a wireless signal and transmits the wireless signal to the operation control circuit 14 in the protective mask, and the operation control circuit controls the operation to instruct the optical element 3 to darken.

Fig. 4 is a schematic diagram of a travel mechanism of two microswitches in the command switch, in which the switch key rotates around the shaft under the action of the acting force F, and when the switch key contacts the front microswitch, the rear microswitch has a certain idle travel a. The two microswitches realize the time difference of front and back closing through the idle stroke.

Reference numeral 13 in fig. 5 denotes a photosensitive element which, when irradiated with an arc light, transmits a signal to an arithmetic control circuit 14 in the protective mask, and controls the arithmetic to signal the optical element 3 to be darkened or to be kept darkened. The photosensitive element 13 and the optical element 3 are one piece. 17 in fig. 6 is a welding current detecting element when a welding current is detected. The signal transmitter 2 in fig. 1 stops transmitting signals. The optical element 3 remains darkened under the signal provided by the light sensitive element 13 in fig. 5. The welding current detecting element 17 may be installed in the handle 16 or in a welding cable connected to the PCB board with a flexible wire.

The system principle logic diagram is shown in fig. 8. In the device, the command switch is pressed, the front micro switch in the switch command is firstly closed, a wireless signal is sent out through a wireless signal transmitter connected with the front micro switch in the handle, a wireless signal receiver on the protection mask receives a signal, a circuit connected with the front micro switch sends out an electric signal to the optical element, and the optical element changes the light transmittance of the optical element under the action of the electric signal, so that the intensity of arc light is limited. The rear micro switch in the command switch is closed after the front micro switch, and the welding gun is driven to start to set the start of the welding process. The protective mask has darkened when the welding process begins to arc, which may be a very short time. But the darkening action is prior to the arc generation. The protective mask in the device system is worn on the head of an operator, so that the welding operation of the operator is convenient. The protective mask in the device has a self-darkening function, and has a certain protective function when being irradiated by arc light emitted by a welding gun in a non-self device.

Fig. 9 illustrates a special case of using the device, which can better embody the advantages of the device. The device utilizes the diffraction property of waves to ensure that workpieces or other objects are blocked between the signal transmitter and the signal receiver when some frames are welded and some complex welding components are welded, and the signals can still be reliably transmitted. Ensure that the device can play the role of protecting eyes of welders.

Fig. 10 illustrates a special case of using the device, in which the photosensitive element is not irradiated by arc light when the photosensitive element area on the protective mask is blocked by an obstacle (workpiece). Under the control of wireless signals, the liquid crystal panel of the protective mask still keeps darkness until the welding process flow is finished.

The special case illustrated in fig. 11 uses the device, the welding gun and the euro-coupling plug of the welding gun, and the PCB control circuit in the welding gun is powered by the PCB circuit board with the rechargeable battery pack in the euro-coupling plug.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. Device based on welder's eyes of protection under thing networking welding system, its characterized in that: the welding gun comprises a protective mask capable of receiving wireless signals and a welding gun capable of transmitting the wireless signals;

after the instruction switch is pressed, the front micro switch is firstly closed to activate the wireless signal transmitter to send out a wireless signal, and the wireless signal receiver on the protection mask controls the circuit connected with the wireless signal receiver to send out an electric signal to the optical element after receiving the wireless signal, so that the optical element changes the light transmittance of the optical element under the action of the electric signal; and the rear micro-switch in the command switch is closed after the front micro-switch, so that the welding gun is driven to start to set a welding process flow.

2. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the front micro-switch and the rear micro-switch are sequentially closed through the travel mechanism, and the idle travel of the front micro-switch is smaller than that of the rear micro-switch.

3. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the welding current detection device is connected with the wireless signal transmitter, and when the welding current detection device detects welding current, the wireless signal transmitter is controlled to stop transmitting signals.

4. A device for protecting eyes of welders based on an internet of things welding system according to claim 3, wherein: the welding current detecting element is mounted in the handle of the welding gun or in the welding cable.

5. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the wireless signal transmitter is connected to a welding power supply through a cable of the welding gun to obtain power, or connected to a cable with a plug of the welding gun to obtain power, or is independently matched with a special rechargeable battery pack power.

6. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the optical element is provided with a photosensitive element, and the light transmittance can be automatically adjusted under the irradiation of arc light.

7. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the welding gun or the protection mask is provided with a matching button which can be used for matching the welding gun or the protection mask and transmitting wireless signals.

8. The device for protecting eyes of a welder based on the internet of things welding system of claim 7, wherein: the matching button is arranged in a small hole on the protection mask and is fixed by a self-contained nut.

9. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the power supply of the optical element is a solar battery or a rechargeable battery or other small batteries.

10. The device for protecting eyes of welders based on an internet of things welding system according to claim 1, wherein: the protective mask is a welding helmet, a welding mask, a welding goggles or a welding shield with an automatic dimming function and wireless signal receiving capability.