39results about How to "Circumstances affecting normal work" patented technology

The embodiment of the invention discloses a power supply circuit, and relates to the technical field of power supply, wherein the power supply circuit comprises an adjusting unit and a plurality of packaging units; the plurality of packaging units are connected between a power supply end and the ground in series; each packaging unit comprises one or more sets of components; each set of components comprises a connected chip to be powered and an auxiliary power supply unit; a signal level conversion unit is respectively connected between the chips to be powered in two sets of adjacent components in series; various chips to be powered are respectively connected to the adjusting unit; the adjusting unit performs temperature or frequency adjustment of the various chips to be powered according to the working states of the various chips to be powered; and thus, all the chips to be powered in the power supply circuit are in a normal working state. By means of the embodiment of the invention, the design production cost can be reduced; the problem of low power supply energy conversion efficiency can be effectively overcome; furthermore, the volume of a PCB also can be reduced; and thus, the working voltage of the various chips to be powered is balanced.

The invention discloses a steel tube shaping machine automatic feeding control system which comprises a baseplate. A transmission box and an electromechanical box are correspondingly fixedly connectedwith the top of the base plate. A first rotating shaft is rotatably connected with the top of the transmission box by supporting frames. One end of the first rotating shaft penetrates through the supporting frames and extends to the front of the supporting frames. The end, extending to the front of the supporting frames, of the first rotating shaft is fixedly connected with a first bevel gear. Afirst chain wheel is fixedly connected with the outer surface positioned between the two supporting frames of the first rotating shaft. The invention relates to the technical field of construction material production equipment. The steel tube shaping machine automatic feeding control system greatly enhances accuracy of feeding arrangement, avoids the condition that a steel tube is stuck in a shaping machine andnormal work of the shaping machine is affected, achieves accurate positioning of the steel tube in the taking position of the shaping machine, and achieves the purpose of preventing materials from getting stuck, so that steel tube shaping work of production staff is greatly facilitated.

The invention discloses a water-cooled brake system comprising a brake device and a water cooling device. The brake device comprises a fixed brake disc, rotary brake discs and brake calipers, and thebrake calipers can move in the axial direction of a rotating shaft to drive the rotary brake discs to move in the direction close to the fixed brake disc, and the rotary brake discs make contact withthe fixed brake disc so as to brake the rotating shaft. The water cooling device comprises a liquid tank and a liquid pump, and the liquid pump can drive the liquid tank and cooling liquid in a containing cavity to circulate. Under the condition that the braking principle of a braking system is not changed, the water cooling device can be adopted for conducting cooling liquid circulation cooling on the fixed brake disc. The fixed brake disc does not rotate along with the rotating shaft, sealing is easy to achieve, the cooling liquid is not likely to leak, and the failure rate is low. The watercooling device can be separated from the rotating shaft, even if a connection pipe in the water cooling device is damaged and leaks liquid, the situation that the cooling liquid enters the rotating shaft to influence normal work of the rotating shaft cannot occur, and maintenance is convenient.

The invention relates to a laser sensing probe and a filter mesh enclosure thereof. The filter mesh enclosure comprises a mesh enclosure body, a filter net and a foam metal plate; the mesh enclosure body is a barrel running through from top to bottom, wherein the upper end of the mesh enclosure body is in threaded connection with the laser sensing probe, the lower end is provided with a baffle plate, the filter net and the foam metal plate are detachably arranged in the mesh enclosure body, and the filter net is closely fit to the upper surface of the baffle plate; a washer is also arranged between filter net and the foam metal plate; and the upper surface of the foam metal plate and the inner side wall of the mesh enclosure body are fixed by virtue of a C-shaped snap spring. The laser sensing probe is simple in structure and convenient to use; and under the real working condition, the laser sensing probe can be protected, so that dust and water vapor can be prevented from being aggregated on a laser optical path in a severe environment, which influences the normal work of the probe.

The invention discloses a method for acquiring SQL performance data of a database, which comprises the following steps: respectively detecting whether a MySQL instance and a host have performance jitter or not, and generating a detection result when the MySQL instance and / or the host have / has the performance jitter; and acquiring host performance data and corresponding MySQL performance data basedon the detection result until detecting that the jittered MySQL instance and / or host returns to normal, and suspending acquisition of the performance data of the host and the corresponding MySQL at the moment. According to the method, the performance data of the MySQL instance / host when the performance problem occurs can be obtained in time, and the situation that in the prior art, the problem ofperformance jitter cannot be solved due to the fact that the site where the problem occurs when operation and maintenance personnel log in a database does not exist is effectively avoided.

The invention relates to the field of washing machine control, in particular to a method and a system for detecting whether packaging bolts of a washing device are removed. The present invention aimsto solve the problem that it is impossible to detect whether or not the packaging bolts of the washing device are removed. For this purpose, the method for detecting whether the packaging bolts of thewashing device are removed mainly comprises: obtaining a detection signal sent by a signal emitter by a signal receiver; obtaining the signal intensity of the detection signal; comparing the signal intensity with a preset signal intensity threshold; based on a comparison result, judging whether or not the package bolts are removed. By means of the above arrangement, it can be indirectly known whether the packaging bolts of the washing device are removed, so that the condition that the normal operation of the washing device is influenced due to non-removed packaging bolts is avoided by notifying the user when the packaging bolts are not removed.

The invention provides an oil pumping system for a crankshaft and a compressor with the same. The oil pumping system comprises an oil pump (1) used for pumping oil into an internal oil hole of the crankshaft. The oil pump (1) comprises a cylindrical pump core (11) and a cylindrical outer sleeve (12) which is connected to the radial outer portion of the pump core (11) in a sleeving mode. A preset distance is spaced between the radial inner wall of the outer sleeve (12) and the radial outer wall of the pump core (11), the spaced preset distance extends in the axial direction to form an annular groove so that the crankshaft can be inserted into the annular groove, and meanwhile the pump core (11) can be inserted into the oil hole. By means of the oil pumping system for the crankshaft and the compressor with the same, the radial spacing between an outer circular pipe and the inner wall of the oil hole in the prior art can be reduced, and therefore friction power consumption between the crankshaft and the oil pump is effectively reduced, and operational reliability, stability and safety of the oil pumping system are improved. The friction force of oil with the oil hole of the crankshaft and the outer surface of the pump core can be increased, and oil pumping capacity of the oil pumping system at the low frequency is improved.

The invention provides an asynchronous sliding device and a foundation in-situ testing device and testing method thereof. By means of the device and method, it is guaranteed that a vertical jack doesnot incline when loads are horizontally applied, and therefore vertical loads are kept stable, and reliability of the test result is ensured. The asynchronous sliding device comprises a box body. A layer of steel balls the same in diameter is flatly laid in the box body, and the steel balls cannot horizontally move in the box body. The tops of the steel balls are higher than the top of the side wall of the box body, a box cover is arranged at the tops of the steel balls in a sliding manner, and the box cover is not in contact with the box body. In the asynchronous sliding device and the foundation in-situ testing device and testing method thereof, when a test piece horizontally moves under the pushing action of horizontal loads, friction resistance between the bottom face of the box body and the test piece is large, and the box body and the steel balls horizontally move together with the test piece; and friction resistance between the bottom of the vertical jack and the box cover is large, the friction coefficient between the steel balls and the box cover is relatively small, the steel balls roll in the box body, the vertical jack and the box cover are fixed, and therefore a horizontal jack and the vertical jack can independently work.

The invention relates to a non-woven fabric melt-blowing forming method. A roller receiving device is adopted. The roller receiving device comprises a base plate, an installing frame, a receiving roller and a cleaning mechanism. The specific method for treating a melt-blowing non-woven fabric by adopting the roller receiving device comprises the steps of polymer feeding, melt extrusion, fiber forming, net forming and roller cleaning. The receiving roller comprises a rotating motor, a rotating cylinder, an inner cylinder, a rotating rod, a driving motor, an air pump and a filter module. The filter module comprises a rotating ring, a filter cloth, a driven gear ring and a driving gear ring. The cleaning mechanism comprises a lifting air cylinder, a lifting plate, a bearing plate, a cleaningbrush, a rotating motor, a rotating cam and a connecting sliding block. The air pump and the external environment are isolated through the filter module, the phenomenon that normal work of the air pump is affected due to the fact that external impurities enter a pipeline, and the pipeline is blocked can be effectively avoided, and the surface of the receiving roller can be cleaned through the cleaning mechanism so as to ensure the receiving quality.

The invention discloses a road water-logging treatment vehicle for municipal engineering. The road water-logging treatment vehicle comprises a chassis which is provided with a water suction box, and the top of the water suction box is provided with a water spraying box; the top position of the water spraying box is provided with a high pressure water pump, and a water suction pump is installed at the right side position of the chassis; the water suction pump communicates with the water suction box through a communicating water pipe, and the water suction pump is connected with a hose; the hose extends out of the middle position of the bottom of the chassis, and a bracket is arranged at the right end position of the chassis; the bracket is provided with a water spraying pipe which is provided with a high pressure nozzle, and the water spraying pipe communicates with the high pressure water pump through a high pressure water pipe; the high pressure water pump is connected with the water spraying box, and the chassis is further provided with a batter group used for driving the high pressure water pump and the water suction pump to operate; and fixing pipe clamps for fixing the high pressure water pipe are arranged at the right side positions of the water spraying box and the water suction box. The road water-logging treatment vehicle has the advantages of the simple structure, small size, light weight, easy operation, low manufacturing and maintenance cost, high treatment speed for road water-logging in potholes, and high promotion value.

The invention discloses a power transmission device of OFDM (orthogonal frequency division multiplexing) power line carrier communication. The device comprises an adjustable gain amplification unit, a differential output power driving unit, a coupling unit, a power source voltage detection unit and a gain control unit, wherein the power source voltage detection unit is used for sampling a power source voltage value, and inputting a sampling result into the gain control unit; and calculating a reasonable gain control signal by the gain control unit according to the power source voltage valve, and feeding the reasonable gain control signal back to the adjustable gain amplification unit. With the adoption of the power transmission device of the OFDM power line carrier communication, the problem that output power is not insufficient due to the fact that OFDM signal peak-to-average ratio is larger is overcome, and meanwhile, communication interrupt caused by power source voltage reduction when a power line load is heavier is prevented. Compared with the traditional signal detection technology, through detecting the power source voltage, the problem that the power transmission device is not easily constricted as the peak-to-average ratio of the OFDM signal is larger is avoided.

The invention discloses a power-off monitoring device and method and external protection equipment. The power failure monitoring device is used for monitoring and warning abnormal power failure monitoring of external protection equipment and comprises a power taking circuit, a power taking connection module and a warning module, the power taking circuit is used for connecting the power failure monitoring device to a special power taking port, and the special power taking port is not connected to a power supply circuit of the external protection equipment; the power-taking connection module is used for monitoring whether the external protection equipment is powered off abnormally or not and connecting the power-taking circuit when monitoring that the external protection equipment is powered off abnormally, so that the power-off monitoring device is started by taking power from a special power-taking port; and the warning module is used for sending warning information when the power-off monitoring device is started. Through the mutual exclusion type power supply design, the special power taking port can be switched on to work when the external protection equipment is powered off abnormally, so that the safety problem caused by powering off the external protection equipment is effectively prevented.

The invention discloses an atmospheric environmental pollution monitoring device suitable for rainy and snowy weather and a monitoring method thereof, and relates to the technical field of environmental monitoring. The atmospheric environmental pollution monitoring device suitable for the rainy and snowy weather comprises a device body, wherein a detection module of the device body is located at the top part of the device body, a box body is fixedly connected to the top part of the device body, the detection module is located in the box body, a mounting opening is formed in the front face of the box body, a pore plate is fixedly connected into the mounting opening, a micro motor is fixedly mounted on the right side of the box body, a cleaning mechanism is arranged in the box body, and a matched wiping mechanism is arranged at the inner top part of the mounting opening. According to the atmospheric environmental pollution monitoring device suitable for the rainy and snowy weather and the monitoring method thereof, the cleaning mechanism and the matched wiping mechanism are used for cooperative operation, and the effect of fully cleaning the circulating air part of the monitoring device is achieved, so that the situation that normal work of the monitoring device is affected by pore plate blockage caused by the rainy and snowy weather is effectively prevented.

The invention is applicable to the technical field of circuit breakers, and provides a circuit breaker installation protection structure, comprising a protective box with an open front, a containing box with an open top is fixedly connected to the bottom of the protective box, and an inner cavity of the protective box is The upper part is detachably provided with a circuit breaker body, and both sides of the circuit breaker body are fixedly connected with clips. The installation and protection structure of the circuit breaker is fixed by the clamping slot to the limit of the clamping strip, and the circuit breaker body is placed in the inner cavity of the protective box, and then the opening of the front of the protective box is closed by manually rotating the closed box door, and the circuit breaker body is installed. Protection, after closing, manually rotate the rotating lever by turning the handle, and drive the rack plate to rise through the rotation of the gear roller, so that the rack plate is inserted into the interior of the bayonet, and the strip is fixed in the interior of the slot to break the circuit. The device body is installed and fixed in the inner cavity of the protective box, the operation is simple and fast, and the time consumption is short.

The invention provides an automatic orange juice vending machine which comprises a vending machine shell, a working cavity is formed in the vending machine shell, a squeezing container is fixedly arranged on the inner wall of the front side of the working cavity, and a juice squeezing assembly is arranged in the squeezing container; the juice squeezing assembly comprises a squeezing cavity formedin the squeezing container and a squeezing piston arranged on the inner wall of the squeezing cavity and capable of sliding left and right. According to the automatic orange juice vending machine, customers are allowed to select favorite oranges by themselves and the oranges directly enter the vending machine for squeezing operation, and the problem that due to the fact that customers cannot select the orange quality autonomously through a traditional orange juice vending machine, and the customers find that oranges with poor quality are used for making, the drinking experience of the customers is influenced is solved; and the vending machine has the queuing function, when the previous customer does not take away the orange juice, the next customer cannot make the next cup, and the situation that the normal work of the vending machine is affected due to the fact that the second customer does not know that the made orange juice is too much is prevented.

The invention relates to the field of washing machine control, in particular to a method and system for detecting whether packaging bolts of washing equipment are removed. The invention aims to solve the problem that it is impossible to detect whether the packaging bolts of the washing machine are removed. For this purpose, the detection method of the present invention whether the packaging bolts of washing equipment are removed mainly includes obtaining the first amplitude of the vibration of the washing tub and the second amplitude of the vibration of the cabinet; comparing the first amplitude and the second amplitude; based on the comparison As a result, it is judged whether the packing bolt has been removed. By separately detecting the vibration of the outer cylinder and the cabinet and comparing the vibration amplitudes, it is possible to indirectly know whether the packaging bolts of the washing machine have been removed, and then notify the user if they have not been removed. The normal operation of the washing machine is affected due to the failure to remove the packaging bolts.

The invention relates to the field of washing machine control, in particular to a method and a system for detecting whether packaging bolts of a washing device are removed. The present invention aimsto solve the problem that it is impossible to detect whether or not the packaging bolts of the washing device are removed. For this purpose, the method for detecting whether the packaging bolts of thewashing device are removed mainly comprises: obtaining a first amplitude of the vibration of a washing cylinder and a second amplitude of the vibration of a casing; comparing the first amplitude withthe second amplitude; based on a result, judging whether or not the package bolts are removed. By means of a mode of separately detecting the vibration of the outer cylinder and the vibration of thecasing and comparing the vibration amplitudes, it can be indirectly known whether the packaging bolts of the washing device are removed, so that the condition that the normal operation of the washingdevice is influenced due to non-removed packaging bolts is avoided by notifying the user when the packaging bolts are not removed.

The invention discloses a universal serial bus line concentration device and universal serial bus line concentration equipment. The universal serial bus line concentration device comprises a concentrator and a singlechip, wherein the concentrator is connected with the single-chip, and the single-chip can control a power supply of a lower connection port of the universal serial bus and a power supply of a main controller of the concentrator, can test current and voltage of fifteen ports of the universal serial bus and can test direct current input voltage of the universal serial bus. By means of the mode, the speed of the interface bandwidth can be increased by adopting a four-to-sixteen interface bandwidth mode, and the test efficiency of testing the universal serial bus can be improved bymeans of the increased speed of the interface bandwidth.

The invention discloses an oil-immersed transformer capable of changing the temperature of an oil medium, which comprises an oil outlet flange pipe, a cooling fan, a first baffle plate, an oil medium heating device and a rotary mounting locking device, a first electric one-way valve is fixed at one end in the oil outlet flange pipe, and single-hole connecting piece groups are fixed at two sides of a transformer body. The two sides of each cooling fan are fixedly connected with the other single-opening connecting piece set, the cooling fans penetrate through the single-opening connecting piece sets through fixing bolts to be installed on the two sides of the transformer body, the oil-immersed transformer capable of changing the temperature of the oil medium is provided with the first baffle, and the first baffle plays a role in shielding rain for the cooling fans; therefore, the situation that rainwater flows into the cooling fan and makes contact with a circuit, meanwhile, the circuit in the cooling fan is prone to being disconnected or short, the effect of rapidly cooling the transformer body through the cooling fan is affected, and the maintenance and replacement cost of the cooling fan is increased is avoided.

The invention discloses a low voltage boosting device for a rural power grid tail end. The low voltage boosting device for the rural power grid tail end comprises a box body and a protection device arranged at one side of the box body, the protection device is used for forming a magnetic field at the periphery of the box body, and a cavity is formed in the box body. A mounting frame is fixedly mounted in the cavity, an electric power device is fixedly mounted in the mounting frame, and driving mechanisms are fixedly mounted at the left side and the right side of the inner wall of the box body; sliding blocks are in threaded connection with the outer surfaces of the two driving mechanisms, a moving plate is fixedly mounted between the two sliding blocks, a brush is fixedly installed on the rear side wall of the moving plate, and a dust removal mechanism is fixedly installed at the bottom of the cavity. Dust can be discharged into a dust collecting groove through a dust discharging pipe, and convenience is provided for the subsequent cleaning work of workers.

The invention discloses a latent heat recovery type water heater. The latent heat recovery type water heater comprises a water heater shell and a burner, the burner is fixedly mounted at the lower endposition of the interior of the water heater shell, and a sensible heat exchanger is fixedly mounted at the upper end position of the burner. A latent heat exchanger is fixedly mounted at the upper end position of the sensible heat exchanger, and an exhaust box is fixedly mounted at the upper end position of the latent heat exchanger. A condensate water collecting device is fixedly mounted at thebottom end position of the outer end surface of the left side wall of the water heater shell, and a gas supply pipe is fixedly mounted at the bottom end position of the right side of the burner. Condensate water can be collected by the condensate water collecting device, and the situation of the leakage of the condensate water caused by the rupture of a hose is effectively avoided; and through anarranged collecting cup fixing device, a condensate water collecting cup arranged in the condensate water collecting device can be clamped and fixed conveniently and effectively.

The invention discloses an air filter of a generator set. The air filter of the generator set comprises a filtering body and a drying body which are integrally formed, wherein a filtering cavity and a water storage cavity are formed in the filtering body from top to bottom, a transit cavity is formed in the drying body, and a first rotating rod is vertically and rotationally connected into the filtering cavity and the water storage cavity. A first motor drives the first rotating rod, a water pump pumps water into the first rotating rod, the water is atomized and sprayed out under the centrifugal effect and the pumping pressure effect, dust in the filtering cavity is settled and cleaned, after water of air is absorbed by water absorption blocks, the air enters the air inlet end of the generator set, and then abrasion caused by the fact that air with impurities enters the generator set is avoided. In addition, the water absorption blocks absorbing water are evaporated by heat generated by the generator set during operation, so that the water absorption blocks can be recycled, energy consumption is reduced, and the problems that by the adoption of impurity interception, blockage, wind resistance increase, wind volume reduction and influence on normal operation of the generator set are caused in the prior art are solved.

The invention belongs to the technical field of electronic audio products, and provides an earplug type earphone and an earphone suite. The earplug type earphone comprises an earphone main body and earmuffs. The earphone main body comprises an ear shell and a sounding device. The ear shell comprises a front shell and a rear shell. The sound production device is mounted in the rear shell. A sound production device, the rear shell and the front shell form a sound cavity in the ear shell. The earmuff is detachably connected to the first end of the rear shell. The front shell is contained in the earmuff, the second end of the rear shell is arranged outside the earmuff, the outer wall of the front shell is provided with a first tone tuning channel communicated with the sound cavity, the outer wall of the rear shell is provided with a second tone tuning channel, the first end of the second tone tuning channel is communicated with the first tone tuning channel, and the second end of the second tone tuning channel is exposed and communicated with the outside of the earmuff. Through the arrangement of the tone tuning channel, air inside and outside the ear shell can be communicated, and meanwhile, the technical problem that the normal use of the earphone is influenced due to the fact that the tone tuning hole is covered by the ear sleeve because the through hole formed in the ear sleeveis staggered with the tone tuning hole can be solved.

The invention discloses a tower convenient to maintain and based on a new energy wind driven generator, and belongs to the technical field of new energy wind power generation. The tower comprises a bottom plate, a first shell and a second shell, wherein the upper surface of the bottom plate is fixedly connected with the first shell, an adjusting mechanism is arranged in the first shell, the second shell is fixedly connected to the upper surface of the adjusting mechanism, a linkage mechanism is arranged in the second shell, and a limiting mechanism is arranged on the right side face of the first shell. According to the tower, by arranging the linkage mechanism, when a wind power fan rotates to generate power, the problem that in the prior art, a heat dissipation device in a motor set cannot effectively conduct heat dissipation work on the outer side of the motor set is solved, the condition that after long-time use, heat on the outer side of the motor set cannot be dissipated, so that the motor set is damaged is avoided, the service life of the motor set is prolonged, and use by workers is facilitated.

The invention provides an oil pumping system for a crankshaft and a compressor with the same. The oil pumping system comprises an oil pump (1) used for pumping oil into an internal oil hole of the crankshaft. The oil pump (1) comprises a cylindrical pump core (11) and a cylindrical outer sleeve (12) which is connected to the radial outer portion of the pump core (11) in a sleeving mode. A preset distance is spaced between the radial inner wall of the outer sleeve (12) and the radial outer wall of the pump core (11), the spaced preset distance extends in the axial direction to form an annular groove so that the crankshaft can be inserted into the annular groove, and meanwhile the pump core (11) can be inserted into the oil hole. By means of the oil pumping system for the crankshaft and the compressor with the same, the radial spacing between an outer circular pipe and the inner wall of the oil hole in the prior art can be reduced, and therefore friction power consumption between the crankshaft and the oil pump is effectively reduced, and operational reliability, stability and safety of the oil pumping system are improved. The friction force of oil with the oil hole of the crankshaft and the outer surface of the pump core can be increased, and oil pumping capacity of the oil pumping system at the low frequency is improved.

The invention provides a woodworking lathe capable of automatically adjusting the position of a turning tool tray. The lathe comprises a lathe body and a tray piece, wherein evenly-distributed fixing bases are fixedly installed on the outer side of the tray piece, detection assemblies are movably installed in the fixing bases, elastic pieces are installed on the detection assemblies, and correction assemblies are installed at the tops of the fixing bases; and each correction assembly comprises a support, a collision plate and a metal box, wherein a driven magnetic block is fixedly connected to the collision plate, a driving magnetic block is fixedly installed in the metal box, and a metal cover plate is movably installed between the metal box and the driven magnetic block. When the tray piece deflects, a detection ejection plate is pressed to move inwards, then a sliding block is driven to move, a push plate pushes an inner cover plate to move upwards, the metal box is opened, the elastic pieces bounce upwards into clamping groove, an outer cover plate is pushed to move upwards, a magnetic field of the driving magnetic block is not isolated any more, the driving magnetic block and the driven magnetic block generate the repulsive force of the same magnetism, and the collision plates are pushed to move quickly and collide with the tray piece, so that the tray piece is reset through collision, and the function of automatically adjusting the turning tool tray is achieved.

The invention provides a control method and system for a gear lamp in a charging mode. The control method comprises the steps that a wake-up signal of a VCU is responded, and the VCU is awakened; a whole vehicle signal is received and a target signal is identified from the whole vehicle signal; whether the whole vehicle enters a normal charging mode or not is judged according to the recognized target signal; and if so, an energy-saving signal is sent to a gear lamp so as to control the gear lamp to enter a preset energy-saving mode. After the SCU responds to the awakening signal of the VCU and is awakened, the SCU can receive the whole vehicle signal, recognize the target signal from the whole vehicle signal and judge whether the whole vehicle enters the normal charging mode or not according to the recognized target signal, and if the whole vehicle enters the normal charging mode, the SCU sends an energy-saving signal to the gear lamp. And thus the gear lamp is controlled to enter the energy-saving mode, so that the gear lamp is prevented from entering the working normally-on state in the whole vehicle charging mode, the energy consumption can be effectively reduced, and the service life of the gear lamp is prolonged.

The invention belongs to the field of plastic mold frames, and particularly relates to a precise positioning plastic mold frame and a precise positioning method.The precise positioning plastic mold frame comprises a feeding cylinder, a concentration box is fixedly connected to the bottom end of the feeding cylinder, side arms are symmetrically arranged on the left side and the right side of the outer surface of the concentration box, and injection molding boxes are slidably connected to the lower portions of the outer surfaces of the side arms; the bottom end of the injection molding box is fixedly connected with a stable bottom table, the injection molding box comprises a side groove shell, and shaping openings are symmetrically formed in the upper portion of the inner wall of the side groove shell. Due to the fact that the adaptive insertion opening is blocked in the process of material injection of the leakage opening, and the leakage opening is blocked by the interior of the large-opening sleeve in the process of opening the adaptive insertion opening, external air cannot affect the leakage opening after entering from the adaptive insertion opening, residual injection molding materials at the leakage opening are difficult to oxidize and air-dry, the bad problems such as blockage of the leakage opening are avoided, and the service life of the injection molding machine is prolonged. And therefore, the phenomena of inaccurate positioning and unstable injection molding material are caused.

The invention relates to a laser sensor probe and its filter screen cover, wherein the filter screen cover includes a screen cover body, a filter screen and a foam metal sheet; the screen cover body is a cylindrical body connected up and down, and its upper end is connected to the The probe is threadedly connected, the lower end is provided with a baffle, the filter screen and the foam metal sheet can be detachably set in the net cover body, and the filter screen is close to the upper surface of the baffle; there is also a filter screen and the foam metal sheet Gasket; the upper surface of the metal foam sheet and the inner side wall of the net cover body are fixed by a C-shaped snap spring. The structure is simple and easy to use. Under actual working conditions, it can protect the laser sensor probe to a certain extent, and avoid the situation that the normal operation of the probe is affected due to the accumulation of dust and water vapor on the laser optical path in harsh environments.