9results about How to "Reduce smoothness" patented technology

The invention discloses a process for preparing a polyester fiber fabric by regenerating polyester waste bottle flakes, belongs to the technical field of polyester fiber fabric processing, and aims to solve the technical problem that the moisture absorption and quick drying performance, friction resistance and pilling resistance of the polyester fiber fabric in the prior art need to be further improved. The method comprises the following steps: adding polyester waste bottle flakes into a pulverizer, pulverizing, sieving with a 60-mesh sieve to obtain polyester regenerated powder, and pretreating the polyester regenerated powder to obtain pretreated polyester powder; composite polyester is prepared from modified polysiloxane enhanced copolyester containing nylon 6 and polyvinyl alcohol blocks, and then the porous composite polyester fiber is prepared by taking polyvinyl alcohol as a pore forming agent, so that the moisture absorption and quick drying performance of the polyester fiber fabric is effectively improved, the wearing experience of the polyester fiber fabric is enhanced, and the service life of the polyester fiber fabric is prolonged. The wear-resistant and anti-pilling performance of the polyester fiber fabric is also improved.

The present invention relates to the field of non-standard automation technology, in particular to an end cap rotary cutting assembly system and method for an injection-molded bottle body, comprising an injection molding machine, an injection molding transfer mechanism, a conveying mechanism, a first positioning mechanism, a first clamping mechanism, a rotary cutting mechanism, a second positioning mechanism, a second clamping mechanism and an end cap assembly mechanism, wherein the injection molding machine is used for bottle body injection molding, the injection molding transfer mechanism comprises an injection molding material picking component and an injection molding conveying component, the injection molding material picking component is used for grabbing the injection-molded bottle body on the injection molding machine and placing it on the injection molding conveying component, the injection molding conveying component is used for conveying the bottle body toward the conveying mechanism, the conveying mechanism is used for bottle body conveying, the first positioning mechanism is used for positioning the bottle body on the conveying mechanism, the first clamping mechanism is used for clamping the positioned bottle body and conveying it toward the rotary cutting mechanism, and the rotary cutting mechanism is used for ring cutting at the port on the bottle body; the present invention realizes full-chain automated operation from injection molding to end cap assembly through integrated and automated design.

The utility model discloses a dissolving device for soil detection, which belongs to the technical field of soil detection, and comprises a mounting shell and a heat dissipation net, the side wall of the mounting shell is fixedly connected with the heat dissipation net, a rotating assembly is arranged in the mounting shell, a lubricating assembly is arranged in the mounting shell, the rotating assembly comprises a motor, and the motor is connected with the lubricating assembly. An output shaft of the motor is fixedly connected with a cooling fan, the top end of the cooling fan is fixedly connected with a rotating table, and a fixing hole is formed in the top of the rotating table; according to the soil dissolving device disclosed by the utility model, through the arrangement of the rotating assembly, the design, the use of the rotating table, the dissolving bottle and the motor, various types of soil can be dissolved, and the dissolving efficiency when the various types of soil need to be detected is improved, so that the detection efficiency is improved; and the motor is cooled by cold air exhausted by the cooling fan and the refrigeration pipe, so that the temperature of the motor is prevented from rising and the service life is not influenced.

Provided are a ferrite powder that inhibits magnetic loss at frequencies lower than 100 MHz, and when applied to a composite material or a composite body, is capable of preventing particles from coming off without loss of moldability and filling properties, a ferrite resin composite material, and electromagnetic shielding material, electronic material, or electronic component. This ferrite powder is a Mn-Zn ferrite powder containing at least spherical or polyhedral ferrite particles having a spinel phase as a main phase. The ferrite particles also have, at respective surfaces thereof, a step structure having a convex polygonal contour. Furthermore, the BET specific surface area of the ferrite powder is 0.35-10.00 m2 / g, and the contained amount of the zinc oxide (ZnO) phase thereof is 0-0.8 mass%.

The invention provides a mechanical arm trajectory tracking control method fusing model prediction and sliding mode control. The mechanical arm trajectory tracking control method comprises the steps that a discrete sliding mode controller is constructed, and a discrete sliding mode surface based on trajectory tracking errors is designed; calculating a sliding mode control law; constructing a dynamics prediction model based on an echo state network, and performing online learning and updating by taking historical state data and a sliding mode control law of the mechanical arm as input so as to predict a state track of the mechanical arm in a future time domain; constructing a model prediction controller embedded with sliding mode control, and introducing a prediction state and a sliding mode control law into an optimization objective function of the model prediction controller; and under the model prediction controller, an optimization problem is converted into a quadratic programming problem to be solved, a smooth optimization control quantity meeting physical constraints is obtained, and the control quantity acts on the mechanical arm system. The high-frequency buffeting problem of sliding mode control is effectively solved, and meanwhile high-precision trajectory tracking of the mechanical arm under strong nonlinear interference is guaranteed.

The application belongs to the technical field of papermaking, and provides a food contactable double-coated copper-coated card paper, a preparation method and application thereof. The food contactable double-coated copper-coated card paper comprises, from the front side to the back side, a front side surface coating layer, a front side base coating layer, a base paper, a back side base coating layer and a back side surface coating layer which are sequentially stacked, and the base paper comprises, from the front side to the back side, a surface layer, a core layer and a bottom layer which are sequentially stacked, the front side base coating layer and the back side base coating layer are obtained by coating a first coating material, and the front side surface coating layer and the back side surface coating layer are obtained by coating a second coating material, wherein the first coating material comprises the following components: 65-grade ground calcium carbonate, a first latex and a starch-acrylate graft copolymer, and the second coating material comprises the following components: 95-grade ground calcium carbonate, a second latex and a starch-acrylate graft copolymer. The double-coated copper-coated card paper has the advantages of high printing surface strength, high gloss, low surface roughness, low difference between two sides and low heavy metal content.

The present invention relates to the field of non-standard automation technology, and in particular to an automatic feeding rotary cutting and assembly equipment, comprising a conveying mechanism, a first positioning mechanism, a first clamping mechanism, a rotary cutting mechanism, a second positioning mechanism, a second clamping mechanism and an end cap assembly mechanism, wherein the first positioning mechanism is used to position the bottle body on the conveying mechanism, the first clamping mechanism is used to clamp the positioned bottle body and convey it toward the rotary cutting mechanism, the rotary cutting mechanism is used to perform ring cutting on the port on the bottle body, the second positioning mechanism is used to position the bottle body after passing through the ring cutting port on the conveying mechanism, and the end cap assembly mechanism is used to assemble the end cap to the port after the ring cutting; the present invention is highly automated and continuous in the entire process from bottle body positioning, clamping and conveying, rotary cutting to end cap assembly, which reduces the waiting time and human intervention in the intermediate links and significantly improves the overall production efficiency and capacity.

This utility model relates to the field of welding slag removal technology and discloses a device for removing welding slag from the bottom slide rail of an automobile seat. The device includes a main shell with a movable opening slot at the top and a welding slag collection bin at the bottom. An arc-shaped groove plate is fixedly connected to the inner wall of the main shell. A movable slide rod is fixedly connected to the inner wall of the main shell. A cylinder slider is movably connected to the outer side wall of the movable slide rod. A rotary motor is fixedly connected to the top of the cylinder slider, and a grinding steel wire wheel is fixedly connected to the top of the rotary motor. This utility model, by incorporating a slide rod and a cylinder slider, provides a more compact structure compared to other types of cylinders, which helps save installation space and enables efficient pneumatic control even in limited spaces. The installation and disassembly process of the sliding cylinder is relatively simple, reducing installation costs and time and improving work efficiency.

The invention relates to a ventilation and dust removal device for tunnel construction and an operation method thereof, and belongs to the technical field of tunnel construction. The ventilation and dust removal device comprises a box body, an air inlet and an air outlet are formed in the upper ends of the front side wall and the rear side wall of the box body respectively, and a fan is arranged in the air outlet; a spraying mechanism is arranged on the upper portion of the inner side of the box body, a water storage cavity is fixedly formed in the middle height position of the inner side of the box body and located below the spraying mechanism, and a left discharging channel and a right discharging channel are formed between the outer side faces of the left side and the right side of the water storage cavity and the inner walls of the left side and the right side of the box body. A discharging mechanism is arranged at the opening of the upper end of each discharging channel. The left side and the right side of the spraying mechanism are each fixedly provided with a baffle, the upper ends of the inner walls of the left side and the right side of the box body are each provided with a knocking mechanism, each knocking mechanism comprises a knocking rod, and the baffles on the same side are knocked through the knocking rods. The problems that an existing ventilation and dust removal device for tunnel construction is high in energy consumption, and attachments are not easy to clean are solved.