87results about How to "Small thickness error" patented technology

The invention discloses novel radiation crosslinked polyethylene thin foam and a preparation method thereof, and relates to the technical field of foam plastic material. The novel radiation crosslinked polyethylene thin foam designed by the invention is prepared from the following raw materials in percentage by mass: 42-87.9% of a main material and the balance of auxiliary materials; the main material adopts LDPE; the auxiliary materials comprise a POE constituent strengthening auxiliary, an EPDM constituent weather-proof additive and an azobisformamide constituent foaming agent; and the strengthening auxiliary, the weather-proof additive and the foaming agent respectively account for 5-30%, 1-10% and 5-10% of the radiation crosslinked polyethylene thin foam by mass. The material has relatively ideal intrinsic mechanical strength as well as greatly improved aging resistance and weather resistance.

The invention relates to a film thickness monitoring method capable of increasing spectral characteristics of film, for a computer-controlled coating device. The method comprises the following steps: (1) inputting coating parameters to a computer before coating; (2) selecting the monitoring wavelengths and monitoring glass number satisfying the limited conditions through the calculation of the computer to obtain a coating monitoring table of the coating system, wherein lambda Min<lambda<lambda Max and the coating monitoring table contains sequential films of the coating system, the corresponding monitoring wavelengths and monitoring glass serial numbers; and (3) coating and the like. By adopting the method, the monitoring wavelengths and required mininum monitoring glass number can be automatically selected; by adopting the proportional film thickness monitoring method, the film thickness monitoring error can be reduced, the film thickness monitoring precision can be increased and the normalized coating system and the non-normalized coating system can be monitored. Under the condition that the control precision of the film thickness monitoring system is not changed, the spectral characteristics of the film can be effectively increased.

The invention provides an efficient full-automatic sponge disk horizontal cutting machine. The full-automatic sponge disk horizontal cutting machine comprises a platform and a main machine frame. The main machine frame and a tool rest are connected together. The platform is horizontally placed below the tool rest. An electric cabinet which controls the main machine frame and a plurality of motors on the tool rest to work is arranged on the side of the platform. A pneumatic tensioning device and an angle adjusting device are arranged on the main machine frame. The cutting thickness and the cutting frequency are set on the electric cabinet, then the tool rest is moved to the proper position, a start button on the electric cabinet is pressed to drive a tool belt on the tool rest to work, a friction driving wheel on the platform drives platform plates to rotate, and therefore the cutting work is accomplished. By the adoption of the full-automatic sponge disk horizontal cutting machine, the working efficiency of cutting of sponge sheets is improved, the thickness error of the sponge sheets is reduced, the surface quality of the sponge sheets is improved, and the working strength of workers is reduced.

The invention relates to a method for preparing perfluorocarboxylic acid ion membranes, which is characterized in that the method comprises the following steps: (1) dissolving perfluorocarboxylic acid resin into a solvent for forming a uniform perfluorocarboxylic acid resin solution A; (2) adding materials with low melting point and high density into a heatable container, heating the container for dissolving the materials, and forming uniform liquid B in the container; (3) preheating the perfluorocarboxylic acid resin solution A and pouring the perfluorocarboxylic acid resin solution A onto the surface of the liquid B protected by nitrogen gas so that a thin layer solution is formed on the surface of the liquid B through casting; (4) heating the liquid B, then carrying out program temperature reduction, and continuously introducing the nitrogen gas for protection in the whole process; and (5) evaporating most or all of the solvent in the perfluorocarboxylic acid resin solution A to obtain the perfluorocarboxylic acid ion membrane on the surface of the liquid B. The perfluorocarboxylic acid ion membrane prepared by the invention can be applied to composite layers of sodium hudroxide use ion membranes, and has the advantages of uniform thickness, difficult bubble generation and stable performance, and the invention provides reliable carboxylic acid layer ion membranes for producing the sodium hudroxide use ion membranes.

The sloping-type double-strip diamond saw machine is aslope arranged on a column by a large frame with enough intensity. Two pairs of light flywheels with the diameter of 1600mm-1610mm are arranged on the large frame, and two driving flywheels are connected together at the lower end of the large frame and rotate under the driving of the driving motor. Two driven flywheels at the upper end of the large frame are respectively and correspondingly arranged on the slideways with different tensioners. The thickness of boards is made by anti-slip circles with different thickness. Two welding edge of the diamond knife head is strip steel in form of wave with the width of 200mm and the thickness of 1.4mm, the strip steel is welted into a circle and arranged on the two flywheels. The knife head is welted on the wave-shaped chimb by laser. When the host machine rotates, the knife head and the saw blades do high-speed rotation movement from top to down in the eight roller-type controllers. The cooling water pipe is located at the two sides of the top end of the saw blade and sprinkles water over the incision line of the saw blade. Under the driving of the frequency conversion motor, the flat vehicle filled with crude materials facilitates the crude materials to pass through the edge of the crude materials at different speeds and the demanded thickness under the control of the numerical control stowing tool. The working form that the saw blade B is at the front and the saw blade C is at the rear is formed gradually, and the two boards after being cut fall on the transportation bracket wheel which is horizontal to the bottom of the crude materials. When the flat vehicle returns to the stop point, the two boards on the bracket wheel are rotated by a plurality of bracket wheels simultaneously in the guard to the storage point, and the numerical control stowing tool carries out a second circulation to the thickness designed by pulsion of the crude materials.

The invention discloses a reciprocating type automatic spraying machine and a control method thereof. The reciprocating type automatic spraying machine comprises a stander and a gun frame, wherein the gun frame is provided with a spray gun and a guide rail; the spray gun is arranged on the stander, a swinging head device capable of moving along the guide rail is arranged on the guide rail, and the spray gun is rotatably connected to the swinging head device along the movement direction of the swinging head device. According to the reciprocating type automatic spraying machine, the reciprocating horizontal movement and the rotation of a swinging head of the spray gun can be synchronously realized, the thickness of the coating on to-be-coated surfaces corresponding to two ends of the guide rail can be reduced, and the spraying thickness is relatively uniform.

The invention discloses a pixel-method-based tire tread profiling twining method. The method comprises three steps of pixel-method-based tire tread profiling twining, shape control over twining adhesive tape and controlling of a ring opening and profiling process. The pixel-method-based tire tread profiling twining comprises the steps that interspace mapping of a multi-dimensional coordinate of tire tread is established, and a pixel-method-based profiling mathematical model and an algorithm are established. The pixel-method-based tire tread profiling twining method has the beneficial effects that by establishing the novel model which is oriented to a tread shape of an object, the aim of the tread shape description allowed by any tread twining technologies can be achieved, and the accuracy requirement of the mathematical model of the tread twining technologies of a truck tire, an agricultural tire, an engineering tire, a diagonal tire of a special tire and a radial tire is totally met. The thickness error of the profiled tire tread is less than 1.5 mm, the error of the two ends of the tire side is less than 3 mm, and the weight error of the tire tread is within 0.5%.

The invention discloses a tool for controlling pouring thickness of a concrete floor. The tool for controlling the pouring thickness of the concrete floor comprises a flat plate, and a plurality of stand bars which are arranged at the lower end of the flat plate. A sleeve is connected on each stand bar in a sleeved mode, the bottom portion of each sleeve is in a cone-shaped structure, a pull rod is arranged at the upper end of the flat plate, and the lower end of the pull rod and the flat plate are vertically fixed. By applying the technical scheme, each stand bar is connected with the sleeve in a sleeved mode, and then is inserted into concrete, the height which the flat plate is located is the thickness of the concrete floor, a scraping ruler is used for scraping the concrete which is higher than the flat plate, the tool is extracted through the pull rod after completing operation, and the sleeves are kept inside the concrete. The tool for controlling the pouring thickness of the concrete floor has the advantages of being simple in structure, convenient to operate, and small in a thickness error of pouring floors.

The invention relates to a method for calendaring and producing a thin rubber product with special design by using the physical property of synthetic rubber. The method comprises the following steps: placing a rubber material in a calendar; calendaring the material through a plurality of rollers in sequence; and directly producing the wide thin rubber product, with thickness below 0.5mm in the calendaring manner. In order to keep the surfaces of the rollers in better condensation state in the calendaring process, the surfaces of the rollers are adjusted to different temperature according the property and the condition of the lipophilic rubber material, so as to obtain the continuous wide thin rubber product. Since the lipophilic rubber material further comprises silicone rubber, chloroprene rubber, etc, through the method, the wide thin rubber product with thickness below 0.5mm can be directly produced in the calendaring manner, the thickness error of the product is small and the production cost is also reduced.

The invention discloses a manufacture method of a semihomogeneous anion-exchange membrane, comprising the following steps: 1) mixing thermoplastic polyethylene-quaternary amino polystyrene anion-exchange composite resin powder, non-thermoplastic crosslinked quaternary amino polystyrene anion-exchange resin powder, polyethylene powder and polyisobutylene powder according to a ratio; 2) melt-blending by an internal mixer, extruding by a two-roller open mill, continuously rolling by a four-roller mill, cooling by a cold-roll, and cutting by a cutting machine so as to obtain a prefabricated membrane; and 3) coating upper and lower surfaces of the prefabricated membrane with enhanced screen cloth, and compacting by a hot press so as to obtain the semihomogeneous anion-exchange membrane product. According to the prepared anion-exchange membrane product, internal quaternary amine groups with anion exchange effect are connected to each other and ceaseless such that membrane area resistance is greatly reduced. Various film forming materials have good compatibility and are tightly combined. Selective transmittance of the membrane is higher, and comprehensive properties of the membrane are obviously better than comprehensive properties of a conventional homogeneous anion-exchange membrane.

The invention provides a method for producing a natural ultrathin stone by using a combination saw. The method comprises the following steps of: machining a quarry stone into a rough plate of which the thickness is 2 to 3cm; machining the rough plate into a thick plate meeting decoration requirement according to needs of the product, wherein the machined thick plate is respectively clamped in a combined clapboard with a hard plastic liner and is fixed and locked, and the width of the combined clapboard corresponds to the breadth of the combination saw; and cutting the thick plate in the combined clapboard with the combination saw which aligns to the central line of the thick plate to obtain the ultrathin stone. By the method, the problem that the ultrathin stone is broken because of the resonance of the ultrathin stone plate when the traditional combination saw machines the plate is solved; more than ten even tens of big ultrathin stone plates can be machined by the method; and the engineering requirement of architectural decoration can be met.

The invention relates to a compound lithium strip production device and a compound lithium strip production method. The device comprises a winding and unwinding mechanism, a laminating roller and a power supply piece. The method comprises the following steps: 1, laminating a strip-shaped lithium source, a solid electrolyte and a compound lithium strip matrix, enabling the strip-shaped solid electrolyte to be located between the strip-shaped lithium source and the strip-shaped compound lithium strip matrix during fitting; 2, respectively electrically connecting the strip-shaped lithium source with a positive electrode of a power supply and electrically connecting the compound lithium strip matrix with a negative electrode of the power supply; 3, switching on power supply, enabling the lithium ion of the lithium source to penetrate through the solid electrolyte to move towards the compound lithium strip matrix according to the electrochemical reaction between the positive electrode and the negative electrode, reducing the electron on the compound lithium strip matrix, and producing the metal lithium so as to obtain a compound lithium strip. The invention provides the novel technologyfor producing the compound lithium strip, a lithium layer is electroplated on the compound lithium strip matrix through an electrochemical method, the procedure is simple and efficient, the electroplated lithium layer is even in thickness and is quite thin, and the strict requirement of the compound lithium strip on the thickness is met.

A shutter panel (10) in which respective longer sides of slats (12) made of synthetic resin are connected through hinge mechanisms to be freely bendable manner, wherein the hinge mechanisms include one hinge member and another hinge member. Each hinge member has a connecting groove that is opened outwardly. By fitting and coupling the longer sides of the slats into the connecting grooves respectively, smooth opening and closing of the shutter panel (10)can be performed because of decreasing warpage or irregularities in thickness of slats (12) or the hinge members and enabling smooth bending of respective slats (12) connected by the hinge mechanisms.

The invention discloses a compound-based semiconductor ultrathin substrate manufacturing method. The method includes 1) manufacturing a device in a compound-based epitaxial material layer; 2) and then forming an isolated table top of a device to be packaged on the right side of a compound semiconductor substrate sheet by means of lithography and etching methods, and etching to the depth of 3-10 micrometers; 3) coating a photoresist on the right side of the compound semiconductor substrate sheet; 4) growing 20 nm of protective medium silica on a temporary substrate sheet; 5) bonding the compound semiconductor substrate to the temporary substrate sheet; 6) performing rapid thinning, slow thinning, polishing on the compound-based semiconductor substrate sheet until the thickness of the compound-based substrate is thinned to 20-30 micrometers; 7) etching the back side of the substrate by means of plasma etching until the epitaxial layer outside the table top are fully etched; and 8) removing the adhesive and photoresist by organic solvent immersion to obtain a compound-based semiconductor device having a substrate thickness of 3 to 10 micrometers.

The invention provides a full-automatic sponge disc horizontal cutting machine which comprises a platform and a main rack. The main rack is connected with a knife rest. A platform is horizontally place under the knife rest. The side face of the platform is provided with an electric control cabinet for controlling a plurality of motors on the main rack and the knife rest to work. The main rack is provided with a pneumatic tensioning device and an angle adjusting device. According to the horizontal cutting machine, the cut thickness and the number of cutting times are set on the electric controlcabinet, then the knife rest is moved to a proper position, a starting part on the electric control cabinet is pressed to drive a knife belt on the knife rest to operate, a friction drive wheel on the platform drives a table plate to rotate, and cutting work is completed. The device improves working efficiency of cutting sponge sheets, reduces thickness errors of the sponge sheets, improves the surface quality of the sponge sheets, and reduces work intensity of workers.

The invention discloses a forward pressing and lateral pushing concrete outer wall hanging plate forming machine and a forming method. The forming machine comprises a fixed frame, and a loading mold frame, a forward pressing part, a transverse pushing part and a mold frame push-pull part assembled on the fixed frame, wherein the forward pressing part and the transverse pushing part are separately positioned at the two sides of the loading mold frame, and move relative to the loading mold frame; and the loading mold frame is movably mounted on the tabletop of the fixed frame, and is linked with the mold frame push-pull part in the horizontal direction. A concrete mixture is vertically pressed and laterally pushed in the pressing process, so that the mechanization rate is improved, the labor intensity of workers is reduced, the floor area in the production process is small, and the electric control mechanization is realized.

The invention discloses a soft-packaged lithium battery thickness measuring device, relates to the field of manufacturing of batteries, and specifically relates to lithium ion production equipment or methods. The device is characterized by comprising a lower base (1) and an upper base (2), wherein a wire guiding frame (3) is arranged on the upper base (2), a puncture needle (4) is arranged below the wire guiding frame (3), a thickness tester (5) is arranged on one side of the wire guiding frame (3), a control system (6) is arranged on the side of the upper base (2), a level (7) is arranged at the top of the upper base (2), and the upper base (2) is spaced from the lower base (1) by an adjustable strut and is parallel to the lower base (1). The device not only overcomes the defects of low accuracy, low consistency, narrow application range and low contrastable significance in present test of soft-packaged lithium ion batteries, but also has the advantages of high accuracy, strong consistency, wide application range and strong contrastable significance; and the thickness of the tested soft-packaged battery is maximum thickness, so the device has great modular design reference significance relative to a micrometer for testing random thickness.

The invention relates to a silicon carbide monocrystal cutting line positioning method. A line source is used for illuminating a cutting line right in the straight front of a bottom face of a crystal. The cutting line casts a shadow line on the bottom face of the crystal and detects the distance between the cutting line and the shadow line. The distance is used as a benchmark to adjust the position of the crystal so that the cutting line is kept parallel to the bottom face of the crystal and crystal sheets uniform in thickness are cut out.