240results about How to "Improve the qualified rate of finished products" patented technology

The invention relates to a lug brushing-cutting and frame brushing machine for a high-dense storage-battery plate, and particularly relates to equipment for automatically brushing and cutting lugs and brushing four sides of a high-dense pole plate in the lead-acid battery production process. The lug brushing-cutting and frame brushing machine is a streamline device which formed by successive connection of a plate delivering device, a pole plate conveying device, a lug brushing device, a lug cutting device, a transition device, a laminating device, a reshaping device, a frame brushing device and a plate folding device, and the streamline device automatically cooperates under electric control. The lug brushing-cutting and frame brushing machine provided by the invention achieves the automatic lug brushing-cutting and frame brushing of a high-dense lead alloy pole plate, and finishes the transition of a production flow from a semi-automation operation to a full automatic serialization operation, so that labour operation intensity and operational cost are greatly reduced, the labour productivity is improved, and the damage to human bodies caused by the environmental pollution and lead dust can be alleviated.

The invention discloses a core assembly pouring device for a cylinder body casting in an automobile engine, comprising a base plate (4), two raiser cores (2), a sprue core (3), sand core assemblies (1) and a locking device (5), wherein the sand core assemblies (1) are connected on the base plate (4) and are locked by the locking device (5), the raiser core (2) and the sprue core (3) are located on the two adjacent sand core assemblies (1) which are clamped on the base plate (4), and the locking device (5) is sleeved and pressed outside the two sand core assemblies (1). By adopting the structure, the sand core of the cylinder body consists of a plurality of sand cores, and each sand core is composed of a plurality of small sand cores, thus reducing the size of each sand core, being beneficial to the forming of the sand cores and reducing casting defects of castings; and meanwhile, the number of the sand core assemblies is two, e.g. one die generates two castings, thus greatly improving production efficiency.

The invention relates to a lithium ion battery lamination unit, a battery cell, a battery cell preparing method and a lithium ion battery and belongs to the technical field of lithium ion batteries. The lithium ion battery lamination unit comprises an inner electrode slice, membranes and outer electrode slices, wherein the polarity of the inner electrode slice and the polarity of the outer electrode slices are opposite, the membranes are attached to the two side faces of the inner electrode slice respectively through a binder, and the outer electrode slices are attached to the outer side faces of the membranes through the binder. According to the lithium ion battery lamination unit, on one hand, dislocation of the membranes relative to the electrode slices can be prevented, and a short circuit between a positive plate and a negative plate can not be formed; on the other hand, during battery cell manufacturing, due to the fact that part of procedures of clamping membranes in the electrode slices are omitted, battery cell manufacturing time is shortened greatly, and the production efficiency of the lithium ion battery is improved.

The invention provides a cigarette quality on-line detection device and a detection method based on machine vision. The detection device comprises a light path detecting unit, an image information processing unit, a control unit and an executing mechanism. The detection method comprises the steps as follows: a white LED light source emits illuminating beams through an optical component, the illuminating beams penetrates through a piece of shielding glass to irradiate on a cigarette advancing at a high speed, and a reflected light generated on the cigarette is focused on the target surface of a high-speed CCD (charge coupled device) line-scan camera through a reflecting mirror and a lens; image information is converted into digital signals through an A / D sampling module and transmitted to the image information processing unit so as to enable the quality of every cigarette to be judged; and the analysis result is transmitted to an upper controller and a PLC ( Programmable Logic Controller) through a CAN bus network, so that defective cigarettes are counted and tracked and then are removed. The cigarette quality online detection device and the detection method can remove unaccepted products on line accurately and deliver qualified products to downstream equipment, thereby greatly improving finished product qualification rate and production rate of a whole production line.

The invention provides a double-point coating production line for hot-melt adhesive padding cloth, and the double-point coating production line comprises a cloth reception device, a wind shielding screen, a size discharging roller, a holt-melt rubber powder blowing / sucking device, a drying oven, a cooling device, an ultraviolet lamp perching device and a rolling device which are arranged in sequence from front to back, wherein the cloth reception device comprises a cloth reception underframe, a lower pressing mould which is arranged on the cloth reception underframe and an upper pressing mould which is arranged on the cloth reception underframe and matched with the lower pressing mould in a lifting manner to crimp padding cloth; the wind shielding screen comprises a screen underframe and a screen plate which is arranged on the screen underframe; the size discharging roller comprises a discharging roller main body and a discharging hole which is formed in the discharging roller main body; and a scraper is arranged in the discharging roller main body. According to the double-point coating production line for hot-melt adhesive padding cloth, the unrolling speed of the padding cloth is increased, the continuous production is realized, the work efficiency is improved, the production cost is reduced and the quality of the padding cloth is improved.

The invention relates to a nonpolar zirconium carbide liquid-phase ceramic precursor, a preparation method therefor and application thereof. The preparation method comprises: firstly preparing a nonpolar zirconium polymer-polyzircooxane through coordination protection of propyl zirconate and controllable hydrolysis condensation reaction; and by using the polyzircooxane as a zirconium source and divinyl benzene as a carbon source, compounding the components to obtain the nonpolar zirconium carbide liquid-phase ceramic precursor. The liquid-phase precursor prepared by the invention has the characteristics of polymer resin; the viscosity of the precursor can be controlled between 50 mpa.s and 500 mpa.s by adjusting the solid content, and the manufacturability is good. The zirconium carbide liquid-phase ceramic precursor which is cured and thermally treated can be converted into a pure-phase zirconium carbide ceramic at a relatively low temperature ( for example, 1500 DEG C). The liquid-phase ceramic precursor prepared by the invention is expected to be used as impregnating resin for a ceramic-based composite material and an antioxidant C / C and C / Si composite material so as to improve the ultra-high temperature antioxidant performance of the material and reduce the ablativity of the material.

The invention discloses a polishing wheel device and an automatic deburring machine provided with the polishing wheel device. The automatic deburring machine comprises an even number of polishing wheel devices, a spindle device, a conveying device, a control device, a machine frame and a lifter used for adjusting the space between the polishing wheel devices and the conveying device; the polishing wheel devices and the spindle device are connected and fixedly arranged in the machine frame, an accommodation part is arranged on the machine frame, the conveying device is fixedly arranged in the accommodation part and positioned under the polishing wheel devices, the control device and the lifter are both fixedly arranged on the outer side of the machine frame, and the control device is electrically connected with the spindle device and the conveying device respectively; a spindle motor and a turnover motor are mounted in the two sides of the top end of the machine frame. According to the polishing wheel device and the automatic deburring machine provided with the polishing wheel device, the rotational velocity and the turnover velocity of polishing wheels, and the speed of a conveying belt of the conveying device are intelligently adjusted according to different products, so that the deburring conditions are enabled to better meet the demands of different products, the application range of the deburring machine is extended, and the automation degree and applicability of the deburring machine are further improved.

The invention discloses a speaker module and relates to the technical field of electroacoustic products. The speaker module comprises a housing; a single speaker is held within the housing; the single speaker comprises a single shell and a single front cover combined together; the single shell and the single front cover form a space in which a vibrating system and a magnetic circuit system are held; the end face of at least one sidewall of the single shell is provided with an ultrasonic face to be ultrasonically welded to the housing; the housing is provided with an ultrasonic line in ultrasonic joint with the ultrasonic face and corresponding to the ultrasonic face. The technical problems such that the prior speaker module is complex to assemble, poor in tightness and poor in appearance are solved; the speaker module is simple to assemble, good in tightness, high in appearance quality, good in acoustic performance, high in production efficiency and low in production cost.

The invention relates to the technical field of cables and in particular relates to a self-supporting aerial optical cable capable of being identified through night vision. The self-supporting aerial optical cable comprises a cable core, an outer sheath, a reinforcing element, a suspension wire sheath and a rib, wherein the cable core is coated by the outer sheath; the reinforcing element is made of a single steel wire or glass fiber reinforced plastics and is coated by the suspension wire sheath; the rib is used for connecting the suspension wire sheath with the outer sheath; the cable core is formed by a central reinforcer, a plurality of loose tubes and a protective layer, wherein the loose tubes are arranged outside the central reinforcer and are coated by the protective layer; at least an optical fiber is arranged in each loose tube; two marking strips are symmetrically arranged on the suspension wire sheath; the suspension wire sheath, the outer sheath and the rib, which are made of the same materials, are formed integrally; and the marking strips are made of special materials. The self-supporting aerial optical cable has the main beneficial effects that the thickness of the suspension wire sheath is more convenient to control; the suspension wire sheath is smoother and round; the product production speed is higher and the percent of pass of the product is higher; the dead weight of the optical cable is lighter and the suitable span is longer; and the colors of the marking strips are more stable.

The invention relates to a cubilose and collagen peptide beverage. The cubilose and collagen peptide beverage is characterized by being prepared from the raw materials in percentage by weight: 8-18% of fish collagen peptides, 0.1-0.6% of cubilose powder, 1-3% of a blueberry concentrated solution, 2-4% of a passion flower concentrated solution, 1-3% of an apple concentrated solution, 0.05-0.3% of inulin, 0.1-1% of tremella polysaccharide, 0.1-0.3% of cherry powder, 0.1-0.8% of red grape concentrated fruit powder, 0.1-0.3% of stachyose, 0.5-2% of elastin peptides, 0.1-0.6% of gamma-aminobutyricacid, 0.1-1% of haematococcus pluvialis, 0.03-0.07% of a food additive, 0.01-0.03% of an essence for food, and the balance of pure water. The invention further discloses a preparation method of the cubilose and collagen peptide beverage. Two major functional components, namely cubilose and collagen peptides, of the cubilose and collagen peptide beverage disclosed by the invention complement each other, the curative effect can be exerted better, the nutrition of the cubilose and collagen peptide beverage is rich, the translation speed of a taker can be effectively increased, memory of the takercan be effectively improved, reactivation of cells and generation of collagen are promoted, nourishing before delivery, after delivery and after illnesses is facilitated, and nutrients daily essential to human bodies are supplemented.

The invention discloses a process for preparing alumina oxide ceramic composite cylinder liner intensified with zirconia. It takes alpha-alumina oxide as base material, adds zirconia stabilized with yttrium oxide, analytically pure basic magnesium carbonate and lanthanum oxide, ball grinds with stirring mill, produces particle in dry condition and shapes at high temperature. Then heat insulates for 3 hours at 1600-1620 Deg. C and bakes into ceramic porcelain body, processes outer sphere of ceramic porcelain body, puts the porcelain body into metallic jacket which is heated in advance and heat insulated and with the interference value being 0.25-0.30 mm, finishes machining the inner sphere of said ceramic porcelain body and polishes to make the roughness be between 0.1-0.2 um. The invention is characterized by simple process, high qualification rate for finished product, low production cost, prolonged life durability and 2-3 times increased life durability.

The invention discloses a fully automatic assembly line production equipment for an injector. The equipment comprises an injector cylinder loading device, a corona treatment device, a cylinder foreignbody detection device, a printing device, a drying device, a needle loading device, a needle mounting device, an oil splashing device, a push rod loading device, a rubber plug loading device, a pushrod-rubber plug matching device, a general assembly device and a finished product detection device. The equipment can realize that each process can be completed on the same set of equipment, not onlyreduces transfer time between various processes, but also reduces floor space required by the equipment, further reduces number of operators, saves time and effort, saves labor costs, and improves production efficiency and finished product qualification rate. The equipment has an exquisite structure design, makes full use of limited assembly line installation space, has high accuracy and smoothness of a connection between various processes, has high stability, reliability, balance ability and high work efficiency, and is suitable for popularization and application.

The invention discloses a loudspeaker module and an assembling method of the loudspeaker module, and relates to the technical field of electroacoustic products. The structure of a module shell is improved, ultrasonic welding is carried out between shell bodies first, then a single loudspeaker is installed in an inner cavity of the module, and a front acoustic cavity is sealed through gluing at last. The defects caused by the fact that in the prior art, the single loudspeaker is installed first and then ultrasonic welding is carried out are effectively overcome, the phenomena that the single loudspeaker is damaged, the shell bodies deform or break and the front acoustic cavity and a rear acoustic cavity leak air in the assembly process cannot occur, and the qualified rate of the loudspeaker module is high.

The invention provides a manufacturing method of tempered glass resin polarized glasses. The pair of tempered glass resin polarized glasses comprises a glasses framework and lenses, wherein each lens comprises a front glass optical thin sheet, a rear resin optical thin sheet and a polarized film flat sheet; the middle region of the front glass optical thin sheet is polished to form a concave region and the rear resin optical thin sheet is tightly embedded into the concave region; and the polarized film flat sheet is stuck between a rear concave surface of the front glass optical thin sheet and a front convex surface of the rear resin optical thin sheet to form tempered glass resin polarized lenses. Compared with existing tempered glass polarized pieces, the weight of the prepared tempered glass resin polarized lenses is reduced by 25-35% so that the comfort is greatly improved; compared with existing resin polarized sheets, the polarization rate is improved and the polarization effect is improved; the lenses are not easy to deform when being inserted into the glasses framework and being used in a subsequent utilization process; and the manufacturing method has strong controllability, is suitable for production line type production and is widely suitable for popularization and application, and the production efficiency and the finished-product yield are improved.

A method for the granulation treatment of raw materials for iron making, characterized in that a composition for the granulation treatment comprising raw materials for iron making (sintering materials or pelletizing materials) is subjected to a granulation treatment (quasi-granulation or pelletization) by the use of a composition compounded in a manner such that when the composition is dispersed in water at a predetermined proportion, the amount of fine particles floating in water after a predetermined period of time elapsed is 2 wt % or more relative to the solids of the composition used. The method can be suitably used for subjecting raw materials for iron making to a granulation treatment at a low cost, to thereby produce a quasi-granulated or pelletized composition of raw materials.

The invention relates to a temperature fuse capable of being soldered through reflow, which comprises a shell and two metallic electrodes, wherein the shell can be used for containing a low-temperature alloy, and the low-temperature alloy is connected with the end heads of the two electrodes. The temperature fuse is characterized by also comprising an upper cover, wherein the upper cover is used for stopping the low-temperature alloy from being fused, the shell is a frame-shaped shell, the metallic electrodes are respectively arranged at the bottom or at both sides of the frame-shaped shell, a space of 0.5 to 2.5mm is left between the electrodes, the low-temperature alloy is filled in the frame-shaped shell, the length and width sizes of the low-temperature alloy are smaller than or equal to the inner length and width of the frame-shaped shell, the thickness size of the alloy is smaller than or equal to the depth of the frame-shaped shell, and the upper cover is buckled and pressed on the low-temperature alloy. The invention also relates to a manufature method of temperature fuse. By removing the upper cover of the temperature fuse, the pressurized state above the low-temperature alloy is released, the temperature inducing and fusing functions of the fuse are activated, the temperature fuse is convenient to manufacture, and the qualified rate of finished products is improved.

The invention relates to the technical field of cables, in particular to a self-supporting optical cable with marking strips. The self-supporting optical cable with the marking strips is formed by a cable core, an outer protecting sleeve wrapping the cable core, a strengthening element, a suspension wire protecting layer wrapping the strengthening element and a rib enabling the suspension wire protecting layer and the outer protecting sleeve to be connected. The cable core is formed by a central strengthening piece located in the center, a plurality of loose sleeve pipes located outside the central strengthening piece and a protecting layer. Optical fibers are arranged in the loose sleeve pipes. The self-supporting optical cable with the marking strips is characterized in that the strengthening element is made of a steel wire or glass fiber strengthening plastic, the two marking strips are symmetrically arranged on the suspension wire protecting layer, and the suspension wire protecting layer, the outer protecting sleeve and the rib are formed integrally and are made of identical materials. The invention further discloses the components and proportions of the marking strips. The self-supporting optical cable with the marking strips has the advantages that the thickness of the suspension wire protecting layer is more convenient to control, more smooth and round, products can be produced faster and are higher in qualified rate, the optical fibers are lower in self-weight and longer in adaptive span, and the color of the marking strips is more stable.

The invention relates to a machining method of a double-journal thin-walled vane part. The machining method comprises the steps that a workpiece is prepared, a boss A and a boss B on the two sides ofthe workpiece are subjected to rough machining, the boss A is subjected to finish machining to form a journal A, the boss B is subjected to semi-finish machining, the workpiece is checked, a dual-drive five-axis simultaneous numerical-control milling machine is used for conducting finish machining on a thin-walled vane body on the workpiece, the boss B is subjected to finish machining to form a journal B, burrs on the outer surface of the finished part are treated, and the part is checked and put in storage. By the adoption of the technical scheme, the pelvic surface and the back side of the vane body are machined through the dual-drive five-axis simultaneous numerical-control milling machine, clamping force is applied to the journals on the two sides of the vane body in the opposite directions of deformation, a workblank is effectively positioned, then the journal B on the vane body is subjected to finish machining and forming, several times of checking are conducted during machiningalternately, the product quality is guaranteed, the coaxial error between the journal A and the journal B is decreased, and the manufacturing precision and qualified rates of finished products are improved.

The invention discloses an injection-molding-machine raw material filtering and screening pulverizer. The injection-molding-machine raw material filtering and screening pulverizer comprises a rack. The rack is fixedly installed on the ground, a baffle arranged in the rack divides the rack into two layers, a preliminary screening mechanism is arranged in the rack, and an impurity collecting mechanism is arranged in a screening box; a filtered water collecting mechanism is arranged in the rack, a raw material crushing mechanism is arranged in the rack, the raw material crushing mechanism is provided with a raw material crushing box, and a sliding rail is arranged in the raw material crushing box; and two adjusting linear motors are arranged on the sliding rail, two crushing driving motors are arranged on the sliding rail, and a raw material collecting box is arranged in the raw material crushing box. A controller is arranged outside the rack, a commercial power inlet is formed in the controller, a capacitance display screen is arranged in the controller, and a PLC system is arranged in the controller. The injection-molding-machine raw material filtering and screening pulverizer has the beneficial effects that the structure is simple, and the practicability is high.

The invention discloses a reutilization method and grating line recovery method of a defective monocrystalline silicon battery sheet after sintering. The reutilization method comprises the following steps: performing acid treatment on the defective monocrystalline silicon battery sheet to obtain a silicon chip to be used; and returning the silicon chip to be used to a monocrystalline silicon production process for secondary processing so as to obtain a qualified finished product monocrystalline silicon battery sheet. By using the method provided by the invention, a waste can be changed into valuable things in that the defective monocrystalline silicon battery sheet can be reprocessed and manufactured to be the qualified monocrystalline silicon battery sheet, precious metals can be recovered conveniently, and the production cost is substantially saved.

The invention discloses cement-imitated wood which comprises a substrate, an antioxidant layer, a decorative layer and an enamel layer, wherein the substrate comprises the following raw materials in parts by weight: 300-500 parts of coarse aggregates, 100-150 parts of fine aggregates, 300-400 parts of Portland cement, 20-40 parts of alumina ore, 50-100 parts of mineral slag, 50-100 parts of furnace slag, 15-30 parts of boiled slag, 40-90 parts of municipal wastes, 5-10 parts of expanded perlite, 30-50 parts of coal gangue, 20-30 parts of plant straws, 30-50 parts of coal ash, 30-35 parts of waste rubber powder, 8-15 parts of waste wood flour, 50-70 parts of fibers, 20-40 parts of titanium oxide, 2-5 parts of a water reducing agent, 5-9 parts of an accelerator, 6-12 parts of a de-foaming agent, 5-8 parts of an anti-rusting agent, 1-5 parts of an early strength agent, 4-9 parts of polyvinyl formal or polyvinyl acetate emulsion, 5-10 parts of borax, 15-25 parts of white sludge, 45-65 parts of tourmaline powder, 20-35 parts of silica sand, 20-25 parts of gypsum and 500-1000 parts of water.

The invention relates to a concrete water reducing agent. The concrete water reducing agent is characterized by being prepared from the following raw materials in parts by weight: 10 to 20 parts of acarboxyl modified N-vinyl carbazole / polyethylene glycol mono-allyl ether / 5-vinyl-1,2,4-oxadiazole-3-carboxylic acid ethyl ester copolymer, 5 to 10 parts of 3-aminopyrazine-2-carboxylic acid modified epoxy terminated hyperbranched poly(amine-ester), 2 to 4 parts of rare earth metal organic framework, 3 to 6 parts of N-sulfo chitosan and 30 to 40 parts of water. The invention also provides a preparation method of the concrete water reducing agent. The concrete water reducing agent is low in mixing amount, strong in water reducing performance and good in plasticizing effect, has no negative influence on the comprehensive performance of concrete, can obviously improve the flowability and the working performance of cement concrete of machine-made sand, improves the strength, the durability andthe thawing-freezing resistance of concrete, and is good in adaptability to the concrete.

The invention relates to a relay push card structure and a relay containing the push card. The push card comprises a push card body. An armature connecting part is arranged at one end of the push card body, and the other end of the push card body is provided with a movable-spring connecting part. The armature connecting part is a cambered-surface structure protruding outwardly. The push card is in abutted contact with the armature of the relay through the cambered surface of the armature connecting part. The relay containing the push card comprises a base, a magnetic circuit part arranged on the base and a contact part, and the push card is assembled on a base between the magnetic circuit part and the contact part. The contact coordinated face, connected with the push card, of the armature is of a plane structure.

The invention belongs to the technical field of lithium batteries, in particular to an ultrathin soft-clad lithium battery head, comprising an encapsulation part and a mounting part, wherein a heatingpipe is arranged in the mounting part. The invention also provides a header assembly, comprising two pairs of headers symmetrically arranged vertically, each pair of headers comprising two headers symmetrically arranged left and right, wherein the headers are the headers mentioned above. The invention also provides a packaging device, comprising a frame, wherein the frame is provided with the head assembly and a transverse adjusting mechanism for adjusting the distance between each pair of heads of the upper and lower pairs of heads. The invention also provides a packaging method, which adjusts the distance between each pair of heads of the upper and lower pairs of heads, folds the aluminum plastic film in half and sends the aluminum plastic film to a pre-packaging position for heat sealing, takes out the aluminum plastic film, inserts a bare cell into a limiting groove of the aluminum plastic film, and packages the top side. The cover head of the invention has respective heating systems, and the battery core is limited not to deviate by the double-angle position seal, so that the ultra-thin soft-clad lithium battery has better appearance and qualified rate of finished product.

The invention relates to paper post-printing processing technology, in particular to a fold, a preparation method thereof, a paper box and a double-edge reverse-press cutting die. The fold comprises a paper board, wherein the reverse surface of the paper board has a dent and the front side of the paper board has two tool marks of which the directions are consistent with that of the dent, and the positions of the two tool marks correspond to the two edges of the dent respectively. The preparation method for the fold comprises the following steps of: S1, providing the paper board, an upper die and a bed die; and S2, punching. The upper die provided by S1 comprises a dent line and a hanging head hole cutting tool mark; and the bed die provided by S1 has an opposite-cutting half-through tool mark, and the positions of the opposite-cutting half-through tool mark correspond to that of the dent line of the upper die. The paper box comprises a hanging head hole which is formed by folding the pre-punched paper board, the dent is formed on the inner side of the folded position, and the two tool marks are formed on the outer side of the folded position. The double-edge reverse-press cutting die has two tool marks of which the directions correspond to that of the dent line, and the two tool marks are positioned on the two edges of the dent line respectively.

The invention discloses a control system and a method for the steady-value voltage stabilization of the mixed gas. The control system comprises a coke oven gas source and a blast furnace gas source, the coke oven gas source and the blast furnace gas source are connected with a first caliber branch and a second caliber branch which are connected in parallel through corresponding supply branches, the first caliber branch and the second caliber branch are merged to form a mixed branch; flow meters and flow regulating valves are arranged on the first caliber branch and the second caliber branch, aheat value instrument is arranged on the coke oven gas source and the blast furnace gas source supply branch and the mixing branch. According to the control system, a given amount of a flow regulating valve on each caliber branch is controlled through a mode of combining feedforward control with a double-closed-loop ratio control system, so as to adjust the heat value and the pressure of the mixed gas.

The invention belongs to the field of machinery machining and manufacturing, and particularly relates to a machining device which is used for improving the surface quality and inner quality of a hole of a product. The device for machining the hole comprises a hydraulic system, a control system and a machining system. The machining system comprises a steel ball which is matched with the bore diameter of a workpiece. The hydraulic system machines the hole on the workpiece by extruding the steel ball. The device for machining the hole is mainly characterized in that the hole on the workpiece is machined by extruding the certain-size steel ball. A traditional boring mode is changed, a certain extruding allowance is reserved before extruding, an end-product hole is machined by the fact that the certain-size steel ball is extruded, the end product pass rate of the hole is improved, the quality and the roughness requirements of the hole are improved, the organizing density of the interior of the hole is strengthened, pulling-out force (pulling-out face used for matching of a shaft and a hole) requirements of a product hole is greatly increased, and production efficiency is improved.

The invention discloses a sequential feeding device for a barrel-shaped workpiece. The device comprises a base, a conveying device and a feeding device, wherein the conveying device and the feeding device are both mounted on the base; the conveying device comprises a conveyor base assembly, a conveying transmission assembly and a feeding conveying assembly; the conveying transmission assembly and the feeding conveying assembly are mounted on the conveyor base assembly; the feeding device is arranged at the upper end of the feeding conveying assembly, comprising a feeding base rack, a feeding chute assembly and a feeding transmission assembly; the feeding base rack is fixedly mounted on the base; a feeding base plate on which the feeding chute assembly is mounted is arranged on the feeding base rack; a conveyed workpiece is arranged on the feeding chute assembly; the lower end of the feeding chute assembly is connected to the conveying transmission assembly which is connected to the feeding conveying assembly. The device is applied to the feeding processing of the barrel-shaped workpiece, is wide in operation scope, high in working efficiency, and simple in operation, and can greatly improve the working efficiency and the passing rate of finished products.

The invention discloses a connecting pipe structure, a four-way reversing valve and an air conditioner, and belongs to the field of air conditioner accessories. The connecting pipe structure comprisesa steel pipe and a copper pipe; the front end of the steel pipe is inserted into the rear end of the copper pipe; the front end surface of the copper pipe protrudes from the front end surface of thesteel pipe; the steel pipe and the copper pipe are fixed through welding; the rear end surface of the copper pipe and the outer wall of the steel pipe are fixed through fusion welding; the front end surface of the steel pipe and the inner wall of the copper pipe are fixed through brazing; and brazing filler metal used for brazing is arranged between the front end surface of the steel pipe and theinner wall of the copper pipe. After welding is completed, the surface of a weld is smooth, effective parts of the whole steel pipe and the copper pipe are basically unchanged in structure, shape andperformance, the welding quality can be effectively ensured, and thus the finished product pass rate of the connecting pipe structure is effectively increased. In addition, since the front end and themiddle portion of the copper pipe are not changed, welding between the steel pipe and the copper pipe does not affect welding and fixing between a third pipe and the copper pipe, and the defect of difficult welding between the connecting pipe structure and the third pipe at present can be effectively overcome.

The invention discloses an MEMS (Micro-electromechanical Systems) microphone, and relates to the technical field of electroacoustic products. The MEMS microphone comprises an outer shell and a circuit board which is combined with the outer shell integrally; the circuit board is provided with a first sound aperture; one side of the circuit board, which is combined with the outer shell, is defined to be the inner side of the circuit board; the inner side of the circuit board, corresponding to the first sound aperture, is provided with an MEMS chip which is installed on the circuit board through a support element; the support element is provided with at least two second sound apertures; the aperture diameter sizes of the second sound apertures are less than the aperture diameter size of the first sound aperture; each second sound aperture is positioned in an orthographic projection of the first sound aperture; and the support element is also provided with a baffle plate for preventing air flows passing through the second sound apertures from interfering mutually. According to the invention, the technical problems that in the prior art, the MEMS chip of the MEMS microphone is easy to damage and the like are solved. The MEMS microphone provided by the invention has the advantages of long service life, high flexibility, good acoustic performance, high finished product percent of pass and the like.