16results about How to "Lower limit" patented technology

The invention discloses a shearing device and a shearing method for glass fiber reinforced plastic material processing, and relates to the technical field of glass fiber reinforced plastic processing, the shearing device comprises a base, a glass fiber reinforced plastic material part and a linear motor, support plates are symmetrically fixed on the two sides of the top of the base, a transverse plate is fixedly connected to the tops of the support plates, and side plates are symmetrically fixed on the two sides of the top of the transverse plate; the top ends of the side plates are fixedly connected with a top plate, the pressing mechanisms are symmetrically arranged on the inner sides of the side plates, each pressing mechanism comprises a movable plate, and an extraction mechanism is arranged on the lower portion of the top plate; the screen plate is installed in the middle of the top of the transverse plate, the middle of the bottom of the transverse plate is fixedly connected with a material guiding groove, the middle of the top of the base is provided with a collecting groove, and the inner side of the side plate is rotationally connected with a lead screw. And small glass fiber dust is generated in the cutting process, and harm can be caused to human health.

The application discloses a circuit for improving sampling precision of a position sensor, comprising a reference voltage module, a sensor interface module, a filter module, a first-stage amplification module and a second-stage amplification module; the reference voltage module is connected with the sensor interface module and is used for providing a reference voltage to the interface module; the filter module is connected with the sensor interface module and is used for selecting input signal voltage of the interface module according to frequency, avoiding interference of high-frequency signals and stabilizing voltage of the circuit; the first-stage amplification module is connected with the filter module and is used for primary amplification of the voltage transmitted by the filter module; and the second-stage amplification module is connected with the first-stage amplification module and is used for secondary amplification of the voltage transmitted by the first-stage amplification module. The circuit can not only greatly improve sampling precision of the position sensor, but also can be applied in many circuits by changing parameters of resistor devices, and has high universality.

The application relates to the technical field of feeding and discharging devices, in particular to a device for automatically feeding and discharging workpieces, which comprises a box body, further comprises a limiting mechanism, the limiting mechanism is provided with at least two groups and is respectively used for limiting and positioning processed workpieces and unprocessed workpieces, and the limiting mechanism is slidingly connected to the upper end of the box body; the limiting mechanism comprises a bearing table, a chuck and a clamping rod, the bearing table is slidingly connected with the box body, the chuck is rotationally connected with the bearing table, the bearing table is provided with a first guide hole, the chuck is provided with a second guide hole, the first guide hole and the second guide hole are distributed in a cross mode, the clamping rod is arranged at the intersection between the first guide hole and the second guide hole, the clamping rod is distributed in a plurality of intervals around the bearing table, the first guide hole and the second guide hole are each provided with a plurality of clamping rods in correspondence, and the chuck is connected with a driving assembly. The application has the effects of reducing the labor intensity of workers and increasing the feeding and discharging efficiency of workpieces.

The invention belongs to the technical field of chemical analysis, and discloses a sodium mannose phosphate content ion chromatography detection method, which comprises: weighing a sodium mannose phosphate sample, and adding water to dilute into a test solution; analyzing the test solution by using an ion chromatography to obtain an ion chromatography characteristic pattern of the test solution; wherein the mobile phase in the chromatographic conditions of the ion chromatography is set as follows: potassium hydroxide aqueous solution-water, binary gradient elution: preparing a sodium mannose phosphate reference substance solution and establishing a sodium mannose phosphate ion chromatographic reference diagram; and comparing the ion chromatography characteristic diagram of the test solution with the ion chromatography contrast diagram of the sodium mannose phosphate, and calculating the content of the sodium mannose phosphate in the test solution. The method is suitable for quantitative detection of sodium mannose phosphate and is sensitive in detection, accurate in result, low in detection limit and high in adaptability.

The present application discloses a method for determining the content of relevant metal elements in yttrium-containing glass microspheres, the method comprising: mixing the yttrium-containing glass microspheres with a first acidic mixture for digestion to obtain a turbid solution; centrifuging the turbid solution to obtain a supernatant and an insoluble precipitate; mixing the insoluble precipitate with a second acidic mixture for digestion to obtain a clear solution; combining the clear solution and the supernatant for detection to obtain the content of the relevant metal elements; wherein the first acidic mixture is a mixture of concentrated nitric acid and concentrated hydrochloric acid, and the second acidic mixture is a mixture of concentrated nitric acid and hydrofluoric acid. The method can accurately and efficiently determine the content of relevant metal elements in yttrium-containing glass microspheres, and can solve the problem that yttrium-containing glass microspheres are difficult to digest, and greatly reduces the influence of the microsphere digestion process on the test results, thereby improving the accuracy of the method.

The utility model relates to the technical field of oxygen detection, and discloses a trace oxygen purity detection device which comprises an outer tube and a detection inner tube, and a platinum wire temperature sensor is wound outside the detection inner tube; the sealing structure comprises end cylinders and ribs, the two ends of the outer pipe are each provided with one end cylinder, the two end cylinders are fixedly provided with the multiple ribs, the ribs are attached to the exterior of the outer pipe, gas is fed into a cavity of the detection inner pipe through the gas feeding pipe, and the gas is mainly hydrogen generated by electrolyzing water and gas to be detected; hydrogen and oxygen react to release heat under the catalytic action of a catalyst, the platinum wire temperature sensor can absorb heat, bridge unbalance is triggered through changes of the platinum wire temperature sensor, an output voltage signal and the oxygen concentration are in a linear relation, and then the oxygen concentration is measured. The trace oxygen detection device is improved in the aspects of precision, speed and stability in a breakthrough manner, and is particularly suitable for the advanced manufacturing field with strict requirements on oxygen content control.

This invention discloses an electrochromic smart dimming film and its roll-to-roll preparation method. The dimming film employs an innovative four-layer structure, consisting of a first transparent conductive substrate, an electrochromic composite layer, a composite electrolyte layer with both ion conduction and storage functions, and a second transparent conductive substrate. By integrating the ion storage function into the electrolyte layer, the ion migration path is significantly shortened, thereby achieving an ultrafast response of less than or equal to 0.5 seconds and an ultra-long cycle life of ≥100,000 cycles. Its preparation utilizes a fully wet roll-to-roll coating process, including steps such as electrochromic layer coating and curing, electrolyte layer slot coating, roll lamination, and low-temperature curing. The product of this invention features a simplified structure, superior performance, low cost, and suitability for mass production, and can be widely applied in the automotive, consumer electronics, and building energy conservation fields.

The utility model relates to the field of circuit protection, in particular to a fuse capable of performing low-power action, which comprises an electric conductor, a magnetic trigger device, an energy storage element, a cutting device and a limiting piece, and is characterized in that the electric conductor is connected with a melt in parallel, and the magnetic trigger device is mechanically linked with the limiting piece; the cutting device is arranged corresponding to the conductor; the limiting piece limits the initial position of the cutting device; when the current flowing through the conductive part exceeds a set threshold value, the magnetic triggering device is triggered, the limiting part is driven to act, limiting on the cutting-off device is relieved, the energy storage element releases stored energy to drive the cutting-off device to cut off the conductive body, and then the melt is fused. The magnetic trigger device is designed to be triggered under low current, a circuit can be cut off under low-power current for circuit protection, an energy storage element is adopted as driving force, directional impact is achieved, and the strength requirement of the shell is lowered.

The utility model discloses a drilling cutting collecting device for a copper ingot drilling sample. The drilling cutting collecting device comprises a box body, a collecting pipe, a drilling rod, a brush, a sliding rod and a knocking rod, a collecting pipe is fixedly mounted on one side of the box body and is communicated with the interior of the box body; an inlet is formed in the other side of the box body, and the drill rod penetrates through the box body from the inlet and penetrates through the collecting pipe; a brush is fixedly arranged in the box body, is positioned above the drill rod and is in contact with the surface of the drill rod; one end of the sliding rod penetrates into the box body from the back face of the box body in a front-back sliding mode and is provided with a knocking rod, and the knocking rod corresponds to the drill rod in position and makes contact with the drill rod. According to the utility model, the accuracy of drilling cutting quantity measurement can be improved, and equipment faults caused by improper cleaning can be reduced. Besides, the top cover can be effectively limited and locked when the top cover is closed, operation is convenient and simple when the top cover needs to be opened and closed again, and whether the top cover is safely locked or not can be visually known.

The invention provides a super lens for projecting a linear light spot, a design method of the super lens and an emission system. The super lens provided by the invention comprises a substrate and a micro-nano structure arranged on the substrate, the super lens is used for shaping incident light into a linear light beam, and the linear light beam is used for projecting on a target plane to obtain a linear light spot; the divergence angle of the incident light parallel to the line length direction of the linear light spot is smaller than or equal to the divergence angle of the incident light parallel to the line width direction of the linear light spot. According to the super lens provided by the invention, the direction of the incident light with a larger divergence angle is preferentially used as the parallel direction of the line width direction, so that the beam waist corresponding to the line width direction is effectively reduced, the lower limit of the line width is reduced, and the effective compression of the line width is facilitated.

The utility model belongs to the technical field of perforated lamps, and particularly relates to an anti-falling patch type perforated lamp which comprises a working frame, first connecting holes are formed in the two ends of the surface of the working frame, a perforated lamp body is clamped in the working frame, and third connecting plates are fixedly installed on the two sides of the surface of the perforated lamp body. A working frame is firstly attached to a mounting surface through a double-faced adhesive tape, an external screw penetrates through a first connecting hole to mount the working frame, a perforated lamp body is clamped in the working frame to rotate, then a third connecting plate rotates into a first connecting plate, and a limiting plate moves up and down through elastic force generated by a second reset spring; and on the contrary, the second connecting plate is pulled to enable the limiting plate to move upwards, so that limiting on the third connecting plate is reduced, the perforated lamp body is rotated, pulled and disassembled, operation is easy, and the equipment operation difficulty is lowered.

The invention discloses an integrated inner frame of a connector, comprising an E-line terminal, an L-line terminal, an N-line terminal and a sleeve for installing the terminals, wherein the E-line terminal, the L-line terminal and the N-line terminal are respectively installed in the E-line terminal hole, the L-line terminal hole and the N-line terminal hole of the sleeve, and a sealing step is arranged on the outer side of the sleeve, and the sealing step divides the sleeve into a front end of the sleeve and a rear end of the sleeve; at the front end of the sleeve, outside the E-line terminal hole, the L-line terminal hole and the N-line terminal hole, a surrounding plate is arranged on the sealing step, and a plurality of glue pulling holes are provided between the surrounding plate and the sealing step, and the end face of the surrounding plate is inclined. The structure of the invention enhances the tensile reliability of the connector, simplifies the structure of the sleeve mold, improves the service life of the sleeve mold, enhances the tightness of the copper foot and the mold during the injection molding of the C5 connector, effectively reduces the occurrence of flashing, and effectively limits the terminal, and reduces the phenomena of glue punching and terminal poor hitting.

The invention relates to the field of injection molds, in particular to a heat dissipation shell injection mold which comprises an upper mold body, a lower mold body, an insert, a lifting rod and an ejector rod, a lower forming groove is formed in the upper end of the lower mold body, the insert abuts against the groove bottom of the lower forming groove, an upper forming groove is formed in the lower end of the upper mold body, the insert extends into the upper forming groove, and the upper mold body and the lower mold body are combined to form a cavity. A lifting opening and a sliding opening are formed in the groove bottom of the lower forming groove, the lifting opening and the sliding opening vertically penetrate through the lower die, the lifting rod is slidably connected to the inner wall of the lifting opening, the lifting rod is fixedly connected to the insert, the insert is provided with a material ejecting opening, the material ejecting opening vertically penetrates through the insert, and the material ejecting rod is slidably connected to the inner wall of the sliding opening and the inner wall of the material ejecting opening. The lifting opening guides sliding of the lifting rod, the lifting rod slides to control the insert to move, so that the insert is separated from the groove bottom of the lower forming groove, the flange is exposed, limiting to the flange is reduced, the material ejecting opening and the sliding opening guide sliding of the material ejecting rod, the material ejecting rod enables a finished product to be separated from the insert, and the demolding quality is improved.

The utility model relates to a radiotherapy positioning device capable of protecting an oral cavity, the front end of a device main body is provided with a boss, the front end of the boss is provided with a vent hole, and the rear end of the device main body is provided with a concave platform; a tongue depressor is arranged at the rear end of the device body, and the protection mechanism comprises protection plates arranged on the front portions of the upper end and the lower end of the device body; the limiting mechanism comprises a first tooth groove and a second tooth groove which are formed in the rear parts of the upper end and the lower end of the device main body. After the oral cavity protecting plate is placed in the oral cavity, the protecting plate can be placed between the lip and the gingiva, the lip and the gingiva are physically separated, a physical cavity is formed, and therefore physical separation is achieved, and radiation injury is reduced. The tongue depressor abuts against the tongue, limiting of the tongue is achieved, the tongue is prevented from influencing the placing stability of the device, dislocation of the device is avoided, the radiation accuracy is improved, in addition, a physical cavity is formed in the upper portion of the tongue, physical obstruction is formed, and radiation damage is reduced.

The invention relates to the technical field of permanent magnet motors, and discloses a low-inertia permanent magnet motor capable of fast dynamic response, which comprises a motor shell, a motor shaft is rotatably connected to the internal axis of the motor shell, a heat dissipation end shell is fixedly connected to the rear side of the motor shell, and a hinge seat is fixedly connected to the bottom surface of the motor shell. The two sides of the motor shell are each provided with an assembling structure, a heat dissipation damp-proof structure is arranged in each assembling structure, a cleaning structure is arranged in a heat dissipation end shell, and the rear side face of the motor shell is fixedly connected with a bearing seat plate; the splicing structure comprises notch arc strips, splicing grooves are formed in the two sides of the motor shell, the notch arc strips are fixedly connected to the inner sides of the splicing grooves, and a plurality of splicing sliding strips are fixedly connected to the front side and the rear side of each splicing groove. Therefore, the maintenance complexity and cost are reduced.

The invention provides a rotating shaft device and electronic equipment, and the rotating shaft device comprises a first shaft, a second shaft and a supporting frame. The first shaft has a first state for driving the supporting frame to rotate around the second shaft by a first angle, a second state for rotating relative to the supporting frame by a second angle on the basis of the first angle, and a third state for driving the supporting frame to rotate around the second shaft by a third angle on the basis of the second angle; an eccentric wheel and a stop wheel; the two sliding blocks can be installed on the supporting frame in a relative sliding mode, and the first end of each sliding block is constructed to be combined with the stop wheel. The sliding block is driven by the supporting frame to rotate around the stop wheel within a first angle range or a third angle range in the first state and the third state, and the sliding block is prevented from rotating around the stop wheel in the second state. The second end of each slider is configured to engage with the eccentric to allow rotation of the first shaft relative to the support frame within a second angular range in a second state.