48results about How to "Troubleshoot hard-to-fix problems" patented technology

The invention relates to a composite lightweight concrete ecological floating island, which comprises lightweight concrete bed bodies, a water surface floating regulator and fiber bionic grass, the water surface floating regulator is arranged on the upper parts of the bed bodies; the fiber bionic grass is arranged at the bottoms of the bed bodies; the bed bodies are fixed in water by a concrete anchor and an elastic cable; the bed bodies are connected by an elastic material; closed cavities and holes which run through up and down are formed inside the bed bodies; lightweight filling materials are arranged in the cavities; steel wire meshes are arranged at the bottoms of the holes; inorganic lightweight materials and planted plants are filled into the holes; the water surface floating regulator is made of polyvinyl chloride (PVC) tubes or poly ethylene (PE) tubes; the fiber bionic grass is made of meshed or sheeted or fibriform geotextiles; and the inorganic lightweight materials are ceramsite or vermiculite. The composite lightweight concrete ecological floating island can prevent the aging and secondary pollution of common organic matter carriers effectively, is favorable for decomposing organic matters, facilitates to the bioremediation of water bodies, solves the problem that the floating island is difficult to fix in the water due to the influence of water level variation, and also conducts the functions of beautifying water surfaces, eliminating waves and protecting embankments.

A method for restoring the inner bore of a gear coupling is disclosed. Dimensions of all parts of the gear coupling are measured to check whether all the dimensions satisfy laser coating restoration standards, the surface fatigue layer of the inner bore of the gear coupling is removed, Ni55 and nanometer WC powder which are prepared in proportion are fully mixed in a mechanical powder mixer through adopting a mechanical mixing method, the Ni55 and the nanometer WC powder are coated on the surface of the inner bore of the gear coupling through adopting a coaxial powder sending method and through scanning by adopting a large-power CO2 laser, and the gear coupling undergoes heat treatment and then is slowly cooled with a furnace; and the inner bore of the cooled gear coupling is machined to obtain the gear coupling with the dimensions and the surface process which satisfy requirements, the gear coupling undergoes processing precision detection, and finally the gear coupling is packaged. Compared with the prior art, the method disclosed in the invention has the advantages of continuous use, better performances and long service life of the gear coupling, simple technology, strong controllability, less energy consumption and the like.

The invention discloses a water ecology restoration device and relates to the technical field of ecological restoration. The water ecology restoration device comprises a floating plate, two floating airbags are respectively fixedly connected to two bottom sides of the floating plate, a restoration box is fixedly connected to the bottom of the floating plate through connecting blocks, a liquid medicinal case is fixedly connected to the right side of the top of the floating plate, a quantitative control unit is fixedly connected to the top of the liquid medicinal case, a fixing box is fixedly connected to the left side of the top of the floating plate, a waterproof jacket is fixedly connected to the middle of the top of the floating plate, a first motor is fixedly connected to the top of theinner wall of the waterproof jacket, and the output shaft of the first motor penetrates the floating plate to extend to the bottom of the floating plate. By the arrangement, problems that an existingwater restoration device is slow in water restoration and poor in restoration effect are solved, water restoration capability is improved, pollution to water is fundamentally solved, and continuous deterioration of ecological environment is avoided.

The present invention relates to a convenient clamping and self-cleaning coconut punching device which can be used in vending machines and its working method, comprising a coconut punching device main body which can be embedded in the vending machine, the lower part of the punching device main body It is a three-jaw type coconut automatic centering manual clamping device, and the upper part of the main body of the punching device is a self-cleaning slag punching device connected with the driving device. The present invention clamps the coconut through a manual self-centering clamping device, which solves the problem that it is difficult to fix the coconut in the process of manual punching; the electric drive method is used for punching, and the coconut can be punched quickly and lightly; The slag cleaning device can prevent the coconut shell slag from falling into the coconut juice, improve the drinking taste, and ensure the reliability of the continuous operation of the present invention.

The invention provides a method for rapidly displaying TTFs. The method includes the following steps that bitmap relevant information of the TTFs, needing to be displayed, of all characters is obtained in advance and stored to form a new font file; when software is operated, the new front file is called to draw and display the characters. The invention further provides a device and equipment corresponding to the method. The problems that the TTFs are drawn and displayed slowly, when the specific font size fronts are displayed, the characters are prone to being displayed with flaws, and correction is very difficult are solved.

The invention discloses a repair device and a repair method for a main shaft inner hole of a machine tool, and the repair device and the repair method are based on a laser cladding technology. Powdercovers a worn surface of a waste main shaft inner hole through a powder feeding device, the worn surface of the waste main shaft inner hole is in metallurgical bonding with a thin layer of a to-be-repaired surface of the main shaft inner hole through laser cladding, and a surface coating which is extremely low in dilution and is in metallurgical bonding with a thin-layer material of the inner holeis formed after rapid solidification, so that the main shaft inner hole of the machine tool can be repaired to achieve the original performances of a base body. The device consists of parts such as alaser unit, a laser cladding head, a powder feeding system, a cooling system and the like.

The invention discloses a plasma arc cladding repairing method of a coupling half inner bore. The method comprises the following steps of: detecting a coupling half, removing a worn fatigue layer to expose a new processing surface, and performing flaw detection; preparing Ni55 and WC alloy powder according to a proportion by a mechanical powder mixer; pre-coating the mixed alloy powder on the surface of the coupling half inner bore; scanning the Ni55 and WC mixed alloy powder by a plasma arc, and cladding the surface of the coupling half inner bore with the powder; performing thermal treatment on the coupling half with the pre-coated cladding layer, and cooling slowly; performing machining and flaw detection on the cooled cladding layer on the surface of the coupling half inner bore to obtain a coupling half meeting the requirements for the size and the form and location tolerance; and finally finishing assembly. Compared with the prior art, the method disclosed by the invention has the advantages of strong technological adaptability, long service life, simple technology, strong controllability, low energy consumption and the like.

The invention provides a depth image restoration method for a depth camera. The method comprises the following steps: firstly, registering a collected depth image and a color image; dividing Pixel points of the color image into pixel blocks through an SLIC superpixel segmentation algorithm; sequentially scanning each pixel block in the depth image; if a small hole exists in the pixel block, repairing by adopting a rapid advancing method; if a large cavity exists in the pixel block, selecting an adjacent similar pixel block, judging whether the adjacent similar pixel block and the to-be-repaired superpixel block are the same foreground or background, selecting a texture block with the highest similarity to fill and repair the to-be-repaired superpixel block, and if no effective pixel valueexists in the pixel block adjacent to the large cavity, temporarily stopping repairing the to-be-repaired superpixel block; checking whether invalid pixel points still exist in the depth image or not,if yes, finishing repairing all the pixel points, and if not, repairing each pixel block with the large cavity by adopting united bilateral filtering in combination with the color image. The method can improve the repair speed while ensuring the repair effect.

The invention discloses an alpine region slope multi-sensing information fusion and intelligent monitoring system and monitoring method. The invention belongs to the field of slope soil state monitoring. The system includes a field integrated monitoring device and an indoor intelligent management center. The field integrated monitoring device comprises a positioning module, a temperature acquisition module, a moisture acquisition module, a soil pressure acquisition module, a surface displacement acquisition module and a data storage and transmission module; temperature, moisture, soil pressure and surface displacement acquisition modules are integrated into a data acquisition module; the data storage and transmission module is connected with the positioning module and the data acquisition module, and stores and wirelessly transmits the position and sensor information to an indoor intelligent management center; and the data processing and early warning module is arranged in an indoor intelligent management center, is connected with the data storage and transmission module, analyzes and processes the monitoring data of the soil temperature, the moisture, the soil pressure and the earth surface displacement sensor, and carries out early warning when the monitoring data reaches an instability threshold value. The system and method are used for monitoring the slope soil body in the alpine region.

The invention discloses a head stabilizing device for an ophthalmologic operation, which comprises a box body, supporting springs are fixedly connected to the bottom of the inner wall of the box body;the top ends of the supporting springs are fixedly connected with a transverse plate, the front surface of the transverse plate is fixedly connected with an adjusting rod; one end, far away from thetransverse plate, of the adjusting rod penetrates through the box body and extends out of the box body; and extending plates are fixedly connected to the two sides of the transverse plate correspondingly, a clamping groove is formed in one side of the extending plate, one side of the extending plate penetrates through the box body and extends out of the box body, and clamping frames are fixedly connected to the two sides of the top of the box body through the base correspondingly. According to the head stabilizing device for the ophthalmologic operation, the problem that the head is difficultto fix after the position of the head is adjusted is solved, the stability of the device is effectively improved, the reliability of the device in the operation process is enhanced, operation failurescaused by shaking of the device are avoided, and the success rate of the operation is guaranteed.

The invention relates to a main transformer bushing maintenance platform. The platform comprises ladder feet and at least two hollow ladder sections. The ladder feet and the hollow ladder sections comprise two hollow ladder pipes and at least one step beam. The joints of the ladder pipes of the ladder feet, the ladder pipes of the lowest ladder sections, and the ladder pipes of the ladder sections are sleeved together, and sliding fits are formed. Locking apparatuses are arranged between the ladder section step beams and the ladder section ladder pipes. The locking apparatuses comprise vertical bevel pushers sleeved with springs and arranged in the ladder section step beams; and horizontal pins sleeved with springs and hinged on the bevel pushers. Locking holes corresponding to the horizontal pins are arranged on the ladder section ladder pipes. Buffering bushings which can contact the bevel pushers arranged above are arranged on the ladder section ladder pipes between the step beams. Adjustable chucking feet are arranged on the bottom surfaces of the ladder feet. One ladder pipe of the ladder feet is provided with a fixing bushing used for fixing a horizontal connecting rod. The maintenance platform provided by the invention is convenient to use, safe, stable, convenient to transport, and convenient to carry.

The invention discloses an implantable peripheral nerve electrode and belongs to the field of medical equipment. The implantable peripheral nerve electrode comprises an electrode tip and a plug end and is characterized in that the electrode tip comprises an openable annular base, a plurality of electrode wires and electrode wire implanting nerve guide parts, each electrode wire is fixed in the openable annular base, the diameter of each electrode wire is smaller than the thickness of the openable annular base, each electrode wire is covered with an insulating layer, one side of each electrodewire is connected with the corresponding electrode wire implanting nerve guide part, and the other side of each electrode wire is connected with the corresponding insertion hole of the plug end; the plug end comprises multiple insertion holes and is used for being connected with nerve signal collecting / stimulation equipment. The implantable peripheral nerve electrode has the advantages that the electrode uses the openable annular base as the basic structure of the electrode, the openable annular base wraps the peripheral nerve trunk to allow the electrode to be stably fixed to the surface of the peripheral nerve, and displacement of the implanted electrode can be prevented; the electrode wires implanted into target loci at different positions of the peripheral nerve under the guidance of guiding needles, and the recording and stimulation space selectivity, accuracy and stability of the peripheral nerve electrode are increased.

The invention discloses a temperature control method and a temperature control device for an enrichment tube. In the method, when the temperature of the enrichment tube needs to be obtained, firstly, the platinum wire used as a heating element does not generate heat; The temperature value on the platinum wire serving as the temperature measuring element; then use the proportional integral differential algorithm to calculate the obtained temperature value on the platinum wire serving as the temperature measuring element and the temperature required by the enrichment tube to obtain the output control amount, when the output control When the output control value is less than or equal to 0, the platinum wire serving as the heating element will not generate heat until the next temperature control cycle begins; when the output control value is greater than 0, determine the heating power that needs to be loaded on the platinum wire as the heating element so The platinum wire that acts as a heating element heats the enrichment tube at this heating power until the next temperature control cycle begins; the advantage is that the platinum wire acts as both a temperature measuring element and a heating element, so there will be no Changing the temperature field near the temperature measurement point effectively improves the measurement accuracy.

The invention relates to the field of medical care, in particular to a preparing method for sodium alginate wound application with thrombin. The preparing method comprises the following steps that an ethanol aqueous solution of the thrombin is configured, then sodium alginate long beam fiber is put into a reaction tank of the thrombin ethanol aqueous solution for constant temperature soaking, sodium alginate short fiber is prepared through drying and cutting after soaking, the short fiber is curled, non-woven fabrics are prepared through non-woven processes such as opening and scutching, carding, lapping and needling and cut into application cores of needed sizes, the application cores, silicone hydrogel membranes with holes, a polyurethane film adhesive tape and an anti-adhesive layer are composited through an application machine, and finally, a finished product of the sodium alginate wound application with the thrombin can be prepared. According to the composite application prepared through the preparing method, activity of the thrombin can be maintained to the utmost extent, the excellent hemostatic and absorption performance is achieved, meanwhile, adhesion of the application and wound can be prevented, a moist healing environment is provided for the surface of the wound, and wound healing is prompted.

The invention discloses an outburst coal seam hole protecting device and a screen pipe insertion method thereof. The problems that in the prior art, a screen pipe is prone to be stuck in a transportation process, and a jack-type drill is not prone to be jacked are solved. The device comprises a drilling tool, a screen pipe, a suspension assembly and a sliding supporting assembly, wherein the suspension assembly is arranged at one end of the screen pipe, the suspension assembly is matched with the drilling tool, the sliding supporting assembly and the screen pipe are connected, the drilling tool comprises a drill body and a spiral drill rod, the spiral drill rod and the drill body are connected, gradual cutting teeth and a movable toothed plate assembly are arranged on the drill body, spiral blades are arranged on the spiral drill rod, hollow grooves are formed in the spiral blades, the spiral drill rod and the drill body are communicated, and the screen pipe and the suspension assemblyare located in the spiral drill rod and the drill body. The outburst coal seam hole protecting device is ingenious in design and simple in structure, the production cost is reduced, the gas drainageefficiency is improved, the problems of jamming and clamping of a drilling tool in an outburst coal seam drilling process are solved, and not only is the drilling efficiency improved, but also hole collapse is reduced.

The creation of the invention discloses a device and a method for producing top and bottom electrode type conducting concrete slabs for indoor heating. The device comprises a tensioner, a bottom formwork and a rectangular forming side mold, the tensioner is utilized to respectively separately clamp the two opposite sides of two electrode nets in parallel and suspend, spread and tension the two electrode nets, so that the electrode nets are prevented from deforming or shifting, the bottom formwork is arranged under the two electrode nets, and is fixedly connected with the tensioner, the forming side mold, which is assembled on the bottom formwork, comprises a top side mold frame, a middle side mold frame and a bottom side mold frame which are aligned and installed sequentially from the top down, the bottom side mold frame is matched and assembled between the bottom electrode net and the bottom formwork, the middle side mold frame is matched and assembled between the two electrode nets, the top side mold frame is arranged over the upper electrode net, and by adjusting the parallel space between the two electrode nets on the tensioner, coupled with adjusting the height of the forming side mold, height can be controlled, so that conducting concrete slabs with different heights can be fabricated.

The invention relates to an insulation installation method for a top rolling-stopping support of a B-type independent liquid cargo tank. The insulation installation method comprises the following steps: 1, mounting the top rolling-stopping support; 2, welding a fixing stud; 3, forming a pouring hole and a limiting hole in a lower rolling stopping support panel, and forming a limiting groove is formed in the portion, corresponding to the limiting hole, of the insulation module in the support area; 4, inserting a limiting pin into the limiting groove from the limiting hole; 5, after the opened cavity is sealed, pouring liquid resin into the cavity from the pouring hole until the liquid resin overflows out of the pouring hole, and solidification is waited; 6, through holes are formed in the insulation module in the non-support area, the through holes are arranged on the fixing studs in a sleeving mode, and the fixing studs are fixed through nuts; and 7, pouring resin into a gap between the non-support area insulation module and the support area insulation module. According to the insulation installation method, the problem that the insulation installation difficulty of the top rolling stopping support is large is effectively solved, and the installed support area insulation module and the installed non-support area insulation module can effectively avoid the problem of heat leakage nearby the top rolling stopping support.

The invention relates to the technical field of LEDs, and discloses an LED light source cutting method. The LED light source cutting method comprises the following steps that an LED light source plate is placed on a cutting table, and the LED light source plate is adsorbed to the cutting table through vacuum suction holes, wherein the LED light source plate comprises a plurality of LED light source units which are arranged in a matrix mode, the LED light source plate is provided with a plurality of transverse connecting lines and longitudinal connecting lines which separate the adjacent LED light source units, the side edges of the adjacent LED light source units are connected through the transverse connecting lines or the longitudinal connecting lines, a cutting knife and a polishing grinding wheel which moves synchronously in the same direction with the cutting knife are arranged above the cutting table, the cutting knife and the polishing grinding wheel are arranged at intervals in the transverse direction, and the interval between the cutting knife and the polishing grinding wheel is equal to the transverse width of one or more LED light source units; and driving the cutting knife to cut the LED light source plate along the longitudinal connecting lines, and separating the LED light source units on the two sides of each longitudinal connecting line; the polishing grinding wheel synchronously moves along with the cutting knife in the same direction to polish the side edges of the LED light source units.

The invention discloses a fixing device capable of fixing stably and used for a fishing net for marine fishing, and relates to the technical field of marine fishing. The fixing device capable of fixing stably and used for the fishing net for marine fishing includes a ship plate, the bottom of the ship plate is provided with a fixed plate, the top of the fixed plate is fixedly connected with a shock pad, two sides of the top of the ship plate are symmetrically provided with bolts, the center of the top of the ship plate is provided with a fixed bar, one side surface of the fixed bar is providedwith a support bar, two ends of support bar are sleeved by gaskets, two ends of the support bar are movably connected with nuts, and one side of the bottom of the fixed bar is provided with an opening. The purpose of elevating a connecting rod can be reached and an effect of stable supporting of the fixed rod can be reached simultaneously, thereby the effect of stably fixing the fishing net can be reached, and the problem that the fishing net is difficult to be fixed in marine fishing is solved.

The invention discloses a cylindrical super capacitor module structure and an assembling method thereof. The cylindrical super capacitor module structure comprises a bottom plate (1) and a top plate (4); a plurality of middle partition plates are arranged between the bottom plate and the top plate, so that a plurality of layers of accommodating spaces are formed between the bottom plate and the top plate; a plurality of rows of capacitor parallel assemblies (6, 7) are placed in each layer of accommodating space; one end of each of a plurality of long screw rods (5) penetrates through the bottom plate and is locked by the bottom plate, the other ends of the long screw rods penetrate through the middle partition plates and the top plate and then are fastened by fasteners, and therefore, thebottom plate, the middle partition plates, the top plate and the multiple layers of multiple rows of capacitor parallel connection assemblies are fixed into a whole; the upper portions, lower portions, left portions and right portions of the multiple layers of multiple rows of capacitor parallel connection assemblies are limited; and the capacitor parallel connection assemblies in each layer are electrically connected in sequence, and the output of the capacitor parallel connection assemblies is realized through the positive total electrical connecting piece and negative total electrical connecting piece of the capacitor parallel connection assembly on the top layer. According to the cylindrical super capacitor module structure and the assembling method thereof of the invention, the numberof fastening bolts is small, assembly is simple and convenient, the maintenance of the super capacitor module is facilitated, and working efficiency is greatly improved.

The invention provides a deep foundation pit protective fence and a protective fence mounting method, and belongs to the field of buildings. The deep foundation pit protective fence comprises a top beam, a plurality of vertical steel pipes, a plurality of horizontal cross rods and a plurality of fixing structures; the multiple vertical steel pipes are fixedly mounted on the upper portion of the top beam in parallel at intervals; the multiple horizontal cross rods are fixedly mounted on the vertical steel pipes in parallel at intervals and are arranged in the height direction of the vertical steel pipes at intervals; and the multiple fixing structures are fixedly mounted on the top beam at intervals and fixedly connected with the corresponding vertical steel pipes. The deep foundation pit protective fence is convenient to mount, fast and convenient to use, high in practicability and capable of effectively improving the mounting quality of the protective fence on the top beam.

The invention relates to an insulating installation method for a top anti-roll bearing for a B-type independent liquid cargo tank, comprising: 1. installing the top anti-roll bearing; 2. welding a fixed stud; 3. installing a lower anti-roll bearing A perfusion hole and a limit hole are set on the seat panel, and a limit slot is set in the corresponding limit hole of the insulation module in the support area; 4. Insert the limit pin from the limit hole into the limit slot; 5. Seal the open cavity After that, pour the liquid resin into the cavity from the pouring hole until the liquid resin overflows the pouring hole and wait for solidification; 6. Open a through hole on the insulation module in the non-support area, and the through hole is sleeved on the fixed stud and fixed with a nut; 7. Pour resin into the gap between the insulating module in the non-support area and the insulating module in the support area. The insulation installation method of the invention effectively solves the problem of difficulty in insulating installation of the top roll stop support, and the installed support area insulation module and non-support area insulation module can effectively avoid the problem of heat leakage near the top roll stop support .

The invention discloses a ceramic ball sphere surface defect detection system. The system comprises a frame, a friction disk, a friction disk drive mechanism, a sphere tray, a tray drive mechanism, amachine vision photographing device and a sphere classification mechanism. The tray drive mechanism drives the sphere tray to rotate above the friction disk. The sphere tray is provided with a spherelimiting hole which runs through the sphere tray. The corresponding middle part of a ceramic ball is located in the sphere limiting hole. The corresponding lower part of the ball contacts the frictiondisk. The sphere tray is used to change the position of the ball in a horizontal plane. The ceramic ball can rotate freely in the sphere limiting hole. The friction disk drive device is arranged on the frame. The friction disk drive device drives the friction disk to move in the same horizontal plane. The friction disk enables the ball to freely rotate in place in the sphere limiting hole throughfriction. The machine vision photographing device is used to photograph the surface of the ceramic ball. The sphere classification mechanism is used to separate and collect qualified ceramic balls and unqualified ceramic balls.

The creation of the invention discloses a device and a method for producing top and bottom electrode type conducting concrete slabs for indoor heating. The device comprises a tensioner, a bottom formwork and a rectangular forming side mold, the tensioner is utilized to respectively separately clamp the two opposite sides of two electrode nets in parallel and suspend, spread and tension the two electrode nets, so that the electrode nets are prevented from deforming or shifting, the bottom formwork is arranged under the two electrode nets, and is fixedly connected with the tensioner, the forming side mold, which is assembled on the bottom formwork, comprises a top side mold frame, a middle side mold frame and a bottom side mold frame which are aligned and installed sequentially from the top down, the bottom side mold frame is matched and assembled between the bottom electrode net and the bottom formwork, the middle side mold frame is matched and assembled between the two electrode nets, the top side mold frame is arranged over the upper electrode net, and by adjusting the parallel space between the two electrode nets on the tensioner, coupled with adjusting the height of the forming side mold, height can be controlled, so that conducting concrete slabs with different heights can be fabricated.

The invention discloses an automatic batch calibration device for micro-mano thermocouples. The automatic batch calibration device comprises a temperature standard instrument, a thermostatic water bath, a zero-degree thermostat, a controller and a computer; the temperature standard instrument, the thermostatic water bath and the zero-degree thermostat are connected with the system controller, andthe system controller is connected with the computer. A micro-nano thermocouple bracket of the automatic batch calibration device solves the problem that micro non-packaged thermocouples cannot be fixed in an existing calibration method, and it is easy to expand into multiple thermocouples; compared with a conventional method in which only a single value can be recorded one time through a voltmeter, the multi-channel system design realizes simultaneous measurement of multiple micro-nano thermocouples in one time of calibration; by the high automation design, a user only needs to set relevant parameters in advance, then the remaining work is automatically completed, and compared with a traditional manual calibration method for micro-nano thermocouples, the automatic batch calibration deviceimproves the calibration efficiency and the result reliability.

The invention discloses a method for repairing defects in expansion grouting pipes and tunnel lining concrete. The method for repairing defects in tunnel lining concrete includes: S10, cleaning the core holes; S20, installing expansion grouting pipes and exhaust pipes; S30 . Making filling materials; S40, filling the filling materials; S50, wiping fireproof decoration materials. The method for repairing the defect of tunnel lining concrete of the present invention adopts lightweight filling materials (such as polyurethane foam material, epoxy material, lightweight mortar, etc.) and professional construction equipment, and adopts pressure injection, pressure maintaining and pressure control systems. It is composed of anti-secondary block-dropping construction technology, convenient support technology, coating anti-contact net spark combustion polymer mortar, etc., and makes the invention have low bulk density, high binding force, fast curing speed, light construction equipment, and tooling technology Simple, no need for templates and supports.

The invention provides a fixing device used for medicine injection for fishes, belongs to the technical field of automation control and aims to solve the problem in the prior art that live fishes are hard to fix. The fixing device used for medicine injection for fishes comprises an image collecting and processing unit, a mechanical unit and a controller. The mechanical unit comprises an injection stand, sub-tight-suction units, a multiple-to-single converger, a sixth hose and a vacuum pump. A plurality of through holes are arranged in the injection stand in an arrayed manner; each through hole is corresponding to and matches one sub-tight-suction unit; the upper ends of the multiple sub-tight-suction units pass through the injection stand and are located on the same horizontal plane; fifth hoses at the lower ends of the sub-tight-suction units are connected with the sixth hose via the multiple-to-single converger; the sixth hose is connected with the vacuum pump; the image collecting and processing unit is fixed to the injection stand; the image collecting and processing unit is electrically connected with the controller via a data line; the controller controls the start and stop of the vacuum pump.