29 results about "Light flashing" patented technology

The utility model discloses an anti-explosion movable LED illuminating lamp, relates to the technical field of illuminating lamps, solves the problems that an existing device is poor in placing stability and poor in using effect, and adopts the following scheme that three sets of fixing frames opposite in position are fixedly installed on the top face of a base. Through the arrangement of the rotating sleeve, the telescopic foot stand and the stable feet, the rotating sleeve is rotated firstly, the telescopic foot stand is lengthened from the folding foot stand, the stable feet make contact with the ground, then the folding foot stand is limited and fixed through the foot stand locking buckles, the three sets of stable feet and the telescopic foot stand form a stable triangle, and the placing stability of the device is improved; meanwhile, through the arrangement of the control box, the arrow indicating lamp and the bulb, the arrow indicating lamp can be controlled to be turned on and the brightness of the bulb can be adjusted through the control button, the LED explosion-proof lamp has a strong-light and weak-light illumination mode, an arrow direction indicating mode and a warning lamp flickering mode, the functionality of the LED explosion-proof lamp is improved, and therefore the using effect of the LED explosion-proof lamp is improved.

An exterior vehicle mirror attachment with logo including an enclosure assembly and an indicia assembly. The enclosure assembly includes an enclosure which can be adapted to the side mirror of a car. The indicia assembly includes a sign member and lights. The indicia member includes an emblem or a logo. The indicia assembly is attached to the enclosure and is illuminated to blink or remain turned on through the lights. The lights are within the sign member.

The utility model relates to a circuit with low-voltage alarm indication, which comprises a low-voltage sampling module, a phase inversion conversion module, a low-voltage alarm indication module, a power supply indication module, an electric leakage protection module, a test electric leakage module and a power supply module. And at the moment, no current flows through the DW2 voltage-regulator tube, so that the triode Q1 is cut off, the voltage at the point B rises, the power indicator light LED1 is extinguished, the triode Q2 is conducted, and the alarm indicator light LED2 flickers, and the circuit has the beneficial effects that under the condition that the power supply voltage is low, correct alarm can be carried out, and a user can be informed of the current unsafe electricity utilization hidden danger in advance.

The embodiment of the invention provides a noise detection method of a steering actuator and a steer-by-wire steering actuator, and relates to the technical field of vehicles. The method is applied to a steer-by-wire steering actuator, and comprises the following steps: when the steering actuator is in a working state, collecting a vibration signal of the steering actuator, and converting the vibration signal into an electric signal; preprocessing the electric signal to obtain a noise frequency domain spectrum; the noise frequency domain frequency spectrum is matched with a preset noise database, a matching result is obtained, the preset noise database is used for recording noise types of the steering actuator under various working conditions, and the matching result is used for reflecting the types of noise generated by the steering actuator; in response to the noise type being an abnormal noise type, generating a fault code based on the noise type; and controlling a fault indicating lamp corresponding to the fault code on a digital instrument panel of the vehicle to flicker. The technical problem that driving safety is low due to the fact that a steering-by-wire system in the related technology cannot recognize abnormal sound faults in time is solved.

The embodiment of the application provides a noise detection method of a steering actuator and a steering actuator of a steer-by-wire, and relates to the technical field of vehicles. The method is applied to the steering actuator of the steer-by-wire, and comprises the following steps: collecting a vibration signal of the steering actuator when the steering actuator is in a working state, and converting the vibration signal into an electric signal; pre-processing the electric signal to obtain a noise frequency domain spectrum; matching the noise frequency domain spectrum with a preset noise database to obtain a matching result, wherein the preset noise database is used for recording noise types of the steering actuator under various working conditions, and the matching result is used for reflecting the noise type generated by the steering actuator; in response to the noise type being an abnormal noise type, generating a fault code based on the noise type; and controlling a fault indicator light corresponding to the fault code on a digital instrument panel of the vehicle to flash. The application solves the technical problem in the related art that the steer-by-wire system cannot identify abnormal noise faults in time, thereby reducing the driving safety.

The invention discloses a self-adaptive high beam control method and system based on multi-target fusion, and the method comprises the steps: obtaining a light spot target, a vehicle control target and a point cloud target of a target vehicle, and carrying out the fusion processing of the light spot target, the vehicle control target and the point cloud target, the method comprises the following steps: acquiring a light spot fusion target, a vehicle control fusion target and a point cloud fusion target, performing fusion processing on the light spot fusion target, the vehicle control fusion target and the point cloud fusion target to acquire adaptive high beam fusion target information, and sending the adaptive high beam fusion target information to a light control unit, therefore, the self-adaptive high beam control of the matrix headlight is realized. According to the method, the stability of ADB dark area control is improved, the ADB function cannot flicker to the front vehicle due to the change of the target state in the driving process, the interference of light flickering to a driver of the front vehicle is avoided, and the driving safety is improved.

The utility model provides a timing balloon dilatation pressure pump, including push rod, tube body, pressure gauge, high pressure tube, locking device and timing device, the tube body is fixedly connected with the casing, the locking device is arranged in the casing, the timing device is fixed on the circumferential side wall of the casing, one end of the push rod passes through the locking device and extends into the tube body, and the other end of the push rod passes through the pressure gauge. A handle is fixed at one end of the push rod, external threads are arranged on the push rod, the front end of the push rod arranged in the tube body is connected with a piston, the side wall of the front end of the tube body is connected with a pressure gauge, and one end of the high-pressure tube is communicated with the front end of the tube body. Time is set according to the balloon and operation requirements, when the time reaches a preset value, the buzzer gives an alarm, and the indicator lamp flickers.

The invention provides a gas meter flashing light identification method and device based on visual self-adaption, and relates to the technical field of industrial automatic detection and metering. The method comprises the following steps: initializing and self-checking; executing an image acquisition and exposure control strategy; carrying out ROI automatic positioning and stability evaluation operation on the image data, and if the image data is stable, entering rapid adaptive initialization, carrying out autonomous learning and establishing a judgment model for a current target; for each frame of new image, extracting features and carrying out probability discrimination; noise is filtered through a state machine, and effective counting of flashing lights is confirmed; each effective count is recorded and traced for online adjustment of the judgment model; and outputting an identification result of the light flashing times. According to the method, through ROI automatic positioning, probabilistic judgment and precise hysteresis and time domain anti-shake state machines, the accuracy of flashing light counting is remarkably improved, a system can rapidly enter a stable working state through a'two-flashing-light 'rapid initialization mechanism, and the manual configuration and debugging time is greatly shortened.

The invention relates to the technical field of vehicle electronics, in particular to a vehicle multi-mode driving intention signal lamp control system and method, and the method comprises the steps: obtaining a trigger instruction of a driver for a yielding mode, a first non-yielding mode or a second non-yielding mode through an instruction receiving module; and the mode response module controls the novel signal lamp groups at specific positions and colors of the vehicle head and the vehicle tail to flicker according to the selected mode, and transmits the intention of commission, priority passage or overtaking prohibition to the outside in a standardized manner. And in the execution process of the yielding mode, if the cooperative control module detects that the steering lamp is activated, the headstock yielding light is controlled to be extinguished, and the tailstock yielding light and the steering lamp synchronously flicker. The instruction monitoring module continuously monitors whether new instructions for triggering different modes exist or not in the lamplight flickering period. And once the second control instruction is monitored, the arbitration switching module immediately stops the current light driving and switches to a light mode corresponding to the driving and new instruction, so that the uniqueness and the definition of signal output are ensured.

The intelligent storage goods shelf comprises a goods shelf body and an intelligent assembly, the goods shelf body comprises threaded vertical rods arranged at intervals, cross beams are installed on the threaded vertical rods in a matched mode in the length direction, the cross beams are matched with the threaded vertical rods, adjusting devices are arranged on the cross beams, and the adjusting devices are used for driving the cross beams to move on the threaded vertical rods. The space height of the corresponding goods allocation is adjusted; the intelligent assembly comprises a control cabinet and indicator lamps, the indicator lamps correspond to goods locations on the goods shelf, the control cabinet is electrically connected with the indicator lamps, and when the intelligent goods shelf is used, under operation of a user, the control cabinet helps the user to quickly and accurately find empty goods locations by controlling the indicator lamps corresponding to the goods locations to flicker; the space height of the corresponding goods allocation can be changed by operating the adjusting device, the storage requirements of goods of different sizes are met, and use is convenient.

The utility model discloses a safety interlocking control device of a packaging machine. The safety interlocking control device comprises a PLC, a start-stop button and work indicating lamps arranged on safety interlocking switches. A normally closed contact on each safety interlocking switch is connected with one first input end of the PLC; the start-stop button is connected with a second input end of the PLC; the PLC is in signal connection with the work indicating lamp, and the PLC controls the lighting mode of the work indicating lamp according to the state of the packaging machine and a normally-closed contact signal of the safety interlocking switch. Whether the safety interlocking switch is a fault point or not is determined through the lighting mode of the working indicating lamp on each safety interlocking switch, so that the time cost of equipment maintenance is greatly reduced, and the production efficiency of a unit is improved; furthermore, after shutdown and before startup, the PLC prompts a user to turn off all the opened safety interlocking switches through flickering of a working indicating lamp, and it is ensured that the user is in a safe state before startup.

The utility model belongs to the technical field of power transmission line maintenance, and particularly relates to a suspension wiring device for power transmission line maintenance, which comprises two groups of T-shaped mounting plates and a ground wire, the ground wire is arranged between the two groups of T-shaped mounting plates, and a connecting plate and two groups of connecting rods are fixedly welded between the two groups of T-shaped mounting plates. The adjustable roller assemblies are mounted on the left and right sides of the T-shaped mounting plates, the suspension wiring device can slide on ground wires with different diameters through the adjustable roller assemblies, the practicability of the device is improved, the pressure sensor is mounted in the fixing sleeve, the warning lamps are mounted at the tops of the two T-shaped mounting plates, and the safety of the device is improved. A control box is fixedly welded to the connecting plate, a battery is installed in the control box, power is supplied to a pressure sensor and a warning lamp, and after a worker falls down, the pressure sensor senses that the pressure is increased, and the warning lamp is turned on for flashing warning, so that rescue is facilitated.

The utility model discloses a novel indicator lamp capable of being quickly disassembled and assembled, and particularly relates to the technical field of indicator lamps, the novel indicator lamp comprises an indicator lamp holder, an indicator lamp body is installed on the front side of the indicator lamp holder, an installation base is arranged on the rear side of the indicator lamp holder, and a disassembling and assembling mechanism is arranged on the front side of the installation base; the dismounting and mounting mechanism comprises a fixing sleeve plate, the fixing sleeve plate is fixed to the front side of the mounting base, and fixing grooves are formed in the surfaces of the two sides of the indicator lamp holder correspondingly. According to the utility model, through the arrangement of the dismounting mechanism and the plugging mechanism, installation can be rapidly completed by a single person without additional tools, the whole dismounting process is simple and easy to understand, the mounting and dismounting efficiency is greatly improved, and the tight cooperation of the conductive pins and the conductive jacks ensures the stable transmission of electrical signals of the indicating lamp when mechanical equipment works. The problem of flickering or extinguishing of the indicating lamp caused by poor contact is reduced, and the reliability of equipment operation is improved.

The application relates to a device running state debugging method and system, equipment and a storage medium, and relates to the fields of embedded systems and electronic equipment. The device comprises a main control module, an LED indication module and a triggering module. The method comprises the following steps: connecting an LED indication lamp in the LED indication module through a first GPIO interface of the main control module and connecting the triggering module through a second GPIO interface of the main control module; monitoring whether the device enters a debugging state; when the device enters the debugging state, obtaining target device running parameters through the main control module, and converting the target device running parameters into LED driving timing; driving the LED indication lamp according to the LED driving timing through the first GPIO interface to obtain LED indication lamp flickering information, and performing device debugging according to the LED indication lamp flickering information. The technical effect is that the device running state debugging efficiency is improved while the cost is reduced.

A system includes a vehicle system provided with an autonomous vehicle. The vehicle system includes one or more computing devices configured to define a shared virtual secret key with an infrastructure server using a server public key obtained from the infrastructure server, generate a light code pattern to identify the autonomous vehicle using the shared virtual secret key and a code length, transmit a vehicle public key and blinking characteristics of the light code pattern, control one or more selected lighting devices of the autonomous vehicle to perform a flashing sequence indicative of the light code pattern, and transition to a marshalling operation state to have the autonomous vehicle be controlled by the infrastructure server in response to the autonomous vehicle being identified based on the flashing sequence.

The embodiment of the invention discloses a UEFI BIOS (Unified Extensible Firmware Interface Basic Input / Output System) updating method and device, electronic equipment and a storage medium, and relates to the technical field of computer firmware updation.The method comprises the following steps: judging the availability of UART and I2C interfaces by sending a detection signal, and selecting an updating interface according to a preset priority; segmenting the BIOS update file into data frames with set sizes, transmitting the data frames to a receiving end frame by frame, and backing up current data; the receiving end verifies the data frame, if verification fails, retransmission is requested, interruption is triggered after timeout or the number of retransmission times exceeds the limit, and data is rolled back; in the updating process, abnormal conditions such as power failure, data verification failure and interface looseness are monitored in real time, updating is stopped once abnormity is detected, abnormal information is recorded, a data rollback mechanism is started, and meanwhile an alarm signal is sent to an administrator through a state feedback mechanism (such as LED indicator light flicker and an alarm instruction). According to the BIOS updating method and device, the limitation existing in a traditional updating mode is effectively solved, and the BIOS updating convenience and reliability are improved.

The present disclosure provides an ice maker displaying an error through blinking of a lamp and an error display method thereof, and the ice maker may include: a case; a cooling unit provided in the case and configured to generate and store ice by heat exchange with a refrigerant; a driver provided in the case and connected to the cooling unit; a discharge unit provided to protrude outwardly of the case and including an ice discharge port for discharging generated ice and a purified water discharge port for discharging purified water supplied from a purified water supply portion.

A network editing method for multiple wireless devices is disclosed, comprising a user presses and holds a touch button of the wireless device and the wireless device enters a public network and broadcasts new network information and the indicator lamp of the wireless devices flashes (blinks). If the wireless device receives a broadcast new network information from other wireless devices in the network, the MAC addresses of respectively two wireless devices are compared. If the MAC address is smaller, then broadcasting network information is stopped, other broadcasting the network information is continued. The method ensures that the interaction of data among a plurality of sub-networks is not interfered by each other, effectively reduces the number of devices in a single network, breaks away from the limitation that Bluetooth devices need mobile phones to configure the network, and enhances the stability and reliability of the network.

1. The name of the design product: baby icon of state information prompt of car light graphical user interface. 2. The use of the design product: the design product is used for vehicle lighting and display graphical user interface. 3. The design points of the design product: the partial graphical user interface of the claimed design. 4. The picture or photo that best shows the design points: front view. 5. The car light is a conventional design, and the rear view, left view, right view, top view and bottom view of the car light are omitted. 6. The use of the graphical user interface: the overall use and partial use of the interface are both used to prompt the outside person that there is a baby in the car according to the user operation. 7. The human-computer interaction mode of the graphical user interface: the front view is the main interface displayed by the car light; after the driver inputs the "baby" instruction in the car through the vehicle-mounted button or voice, the car light displays the baby icon corresponding to the front view; the user inputs the "reminder" instruction in the front view, and the baby icon can switch different display positions or switch the high-light or low-light flashing display mode, for example, the user starts the vehicle or brakes, and the baby icon can switch different display positions or switch the high-light or low-light flashing display mode; the user can present the baby crawling effect by changing the moving distance or flashing frequency. 8. Other circumstances that need to be explained: the unclaimed part is represented by the semi-transparent blue coating area in the figure.

An integrated tour guide tool includes a housing with a wearable ring on it. A speaker unit and a light signal generating unit are respectively located at both ends of the housing. A battery is integrated inside the housing, and control switches are respectively located on the outside of the housing for the speaker unit and the light signal generating unit. The battery, speaker unit, and light signal generating unit are electrically connected and controlled by the two control switches. This invention solves the problems of existing tour guide devices being diverse, inconvenient to use, and easily lost. It achieves integrated sound generation and multiple light flashing signal transmission in a single device, thereby amplifying sound and providing target object indication and assembly signal functions based on multiple light patterns. In particular, the device has a simple structure, is easy to wear, and greatly reduces the burden on users.

The present invention addresses the problem of reducing troubles brought to a driver. When the presence of another vehicle in a warning area set laterally rearward of the own vehicle or the presence of another vehicle suddenly approaching the warning area from laterally rearward of the own vehicle is detected, the indicator light of the rearview mirror on the warning area side flashes while the indicator light of the rearview mirror on the warning area side flashes when the turn light on the warning area side is operating, and the turn light on the warning area side flashes when the turn light on the warning area side flashes. And the alarm sounds or the steering handle vibrates. On the other hand, in this case, when the presence of another vehicle following the other vehicle is detected and the indicator light of the rearview mirror flashes, the driver of the own vehicle is considered to recognize the presence of the other vehicle, the ringing of the alarm sound or the vibration of the steering handle is stopped.

Provided are a headphone system, a headphone, and a headphone charger that have a new blinking mode during battery charging. The headphone system includes the headphone, the headphone charger that charges the headphone, and an indicator lamp that blinks and indicates a charging status of at least one of the headphone, the charger, or both the headphone and the charger. The indicator lamp is provided with at least one of the headphone, the headphone charger or both the headphone and the charger. A blinking period includes a first period during which a luminance of the indicator lamp gradually increases, and a second period during which the luminance gradually decreases. The first period and the second period are alternately repeated. The duration of the first period is different from the duration of the second period.

A rear-end collision alarm apparatus featuring remote alarming is provided, including an alert detector device and an alert receiver device. The alert detector device is mounted on a preset warning object (such as a warning triangle and a cone). The alert receiver device is worn on or carried by a user. The alert detector device includes a first light source module, an infrared detection module, and a first Bluetooth module. The alert detector device is placeable, together with the warning object, at a predetermined remote distance from a traffic accident or construction site, where the first light source module may serve as a warning through light flashing. When the infrared detection module detects an object entering a detection range, the alert detector device transmits an alert signal through the first Bluetooth module to the alert receiver device to have the alert receiver device instantaneously emit alarming light and alarming sounds.

This invention discloses a steady-state response circuit for indicator lights in power supply equipment, comprising a power detection circuit, a power conversion circuit, a PWM transformer control circuit, and a synchronous rectification circuit connected in sequence. The output of the synchronous rectification circuit is simultaneously connected to an indicator light circuit and a feedback circuit. This circuit eliminates indicator light flickering through stable DC power supply and utilizes optocouplers to achieve immediate extinguishing upon power failure, avoiding misjudgment. The circuit incorporates multiple protection components, such as fuses, transient diodes, and filter capacitors, to ensure overall stability and reliability. This invention solves the problems of flickering indicator lights when powered from the AC end and delayed extinguishing of indicator lights when powered from the DC end, improving the user experience and making it suitable for high-quality charging power supply equipment.

1. Name of the product in this design: Graphical User Interface for Controlling Range Hoods in Electronic Devices. 2. Intended use of this design: for use in electronic devices. 3. The key design features of this product are the content of the graphical user interface on the screen. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: When the range hood is powered on, as shown in the main view of Design 1, all indicator lights are on; when powered on, the screen automatically goes black to enter the power-off black screen state, as shown in the interface change state diagram of Design 1, at which time the power button is slightly lit; when the power button is clicked, the range hood enters the standby state, as shown in the interface change state diagram of Design 1. The range hood is in standby mode, which is the main view interface of Design 2; clicking the light button enters the lighting-on state, which is the interface change state diagram of Design 2, at which time the range hood light is turned on. The standby state of the range hood is shown in the main view interface of Design 3; the automatic cruise state is shown in the interface change diagram of Design 3 when the automatic button is pressed briefly in the standby state. The range hood is in standby mode, which is the main view interface of Design 4; clicking the high-speed button enters the high-speed mode, which is the interface change state diagram of Design 4. At this time, the high-speed button is fully lit and the fan is running at high speed. The range hood is in standby mode, which is the main view interface of Design 5; clicking the low speed button enters the low speed mode, which is the interface change state diagram of Design 5. At this time, the low speed button is fully lit and the fan is running at low speed. The range hood's standby state corresponds to the main view interface (Design 6). A short press of the "Smart Odor Removal" button enters the Smart Odor Removal preheating state (Design 6 interface change state diagram 1). At this time, the power button illuminates orange and displays a breathing effect, while the range hood activates air quality detection. If good air quality is detected (Design 6 interface change state diagram 2), the power button illuminates green, and the fan does not operate. If poor air quality is detected (Design 6 interface change state diagram 3), the power button illuminates yellow, and the fan operates at low speed. If extremely poor air quality is detected (Design 6 interface change state diagram 4), the power button illuminates red, and the fan operates at high speed. In both poor and extremely poor air quality states, when the range hood detects improved air quality, it returns to the good air quality state (Design 6 interface change state diagram 2). In the good air quality state, after 2 minutes, it enters a low-power state (Design 6 interface change state diagram 5). In the low-power state, the power button is half-lit, the Smart Odor Removal button is dimly lit, and the other buttons are off. The range hood is in standby mode, which is the main view interface of Design 7. Press and hold the "lock screen button" for 1.5 seconds to enter the lock screen mode, which is the interface change state diagram of Design 7. At this time, the lock screen button is fully lit. Press any button briefly, the buzzer will sound twice, and the lock screen button indicator light will flash twice.

The invention provides a solid state disk performance monitoring system and electronic equipment. The system comprises an electronic device, the electronic device is provided with a solid state disk, a substrate controller and an operating system, the solid state disk is provided with firmware, and the substrate controller and the operating system are in communication connection with the firmware; the server is a server of a producer of the solid state disk; wherein the server acquires a first log from the electronic equipment at regular time and acquires operation data of the solid state disk according to the first log, and the first log comprises a Telemetry log; the server or the electronic equipment determines values of a plurality of preset indexes according to the operation data; the electronic equipment determines a performance state corresponding to the solid state disk according to the values of the preset indexes, the substrate management controller controls an indicator lamp corresponding to the solid state disk to flicker according to the performance state, and the flicker frequency of the indicator lamp corresponds to the performance state. The embodiment of the invention can improve the operation and maintenance efficiency.

The invention provides an electric heating shawl temperature control method and system based on multiple safety protection, and relates to the technical field of intelligent temperature control. Controlling the temperature through a mechanical temperature control switch until the temperature is less than or equal to a first preset temperature; an NTC resistance value is obtained in real time through an NTC temperature sensor; calculating the change rate and the temperature rise slope of the NTC resistance value through a fault diagnosis algorithm; according to the change rate and the temperature rising slope, whether the temperature variation is larger than a second preset temperature or not is judged, output of a silicon controlled rectifier of the electric heating shawl is cut off, and sound-light alarm is conducted through flickering of an indicator lamp or a buzzer; acquiring a voltage signal of the electric heating shawl; converting the voltage signal into a temperature signal by simplifying a three-parameter equation; and controlling the temperature signal to be less than or equal to a third preset temperature through an NTC temperature sensor and a silicon controlled rectifier so as to realize accurate constant-temperature control.

The invention discloses a doubling reminding method and device, electronic equipment and a storage medium. The method comprises the following steps: determining first time; and according to the first time, controlling a second vehicle lamp to give an alarm. According to the technical scheme, the first time is determined; according to different collision time, the vehicle lamp of the second vehicle is adjusted to emit light at different light flicker frequencies and light brightness, so that whether the first vehicle needs to change the vehicle body posture or adjust the vehicle speed or cancel the doubling is prompted in time, the doubling safety of the second vehicle is improved, collision between the first vehicle and the second vehicle is avoided, and the driving safety of the first vehicle is improved. The safety of drivers of the first vehicle and the second vehicle is influenced; besides, when a vehicle exists behind the second vehicle, the vehicle behind the second vehicle can be prompted that the second vehicle possibly collides through lamplight, so that the vehicle speed of the vehicle behind the second vehicle is adjusted in time, the possibility that the vehicle behind the second vehicle collides with the second vehicle is reduced, and driving safety is improved.

The utility model provides a mould clamping device of a bending machine, which relates to the field of bending machines and comprises a bending machine body and a clamp body, two groups of chucks are arranged below the clamp body, handles are arranged on the chucks, a motor is arranged on one side of each chuck, pressure sensors are arranged on the inner sides of the chucks, grooves are arranged in the chucks below the pressure sensors, and the pressure sensors are arranged in the grooves. When the pressure sensor detects that the clamping degree is abnormal, the indicating lamp at the electronic display screen flashes a fault red light, the motor controls the rotating rod to rotate after receiving a signal, the gear is driven to rotate through rotation of the rotating rod, the movable toothed plate is driven to move through rotation of the gear, and the clamping degree is adjusted to be abnormal. The movable toothed plate moves to drive the clamping blocks to extend out of the grooves, the extending clamping blocks abut against and clamp the upper die, the clamping degree is increased, meanwhile, the upper die is prevented from loosening and falling off, unnecessary losses caused by fault upgrading can be avoided, and the practicability of the device is improved.