92results about How to "Not uneven" patented technology

The invention relates to a flip-chip single-face three-dimensional circuit fabrication method by etching-first and packaging-second and a packaging structure of a flip-chip single-face three-dimensional circuit. The method includes following steps: picking a metal substrate, pre-coppering the surface of the metal substrate, sticking photo-resistant films, removing part of the photo-resistant films on the back of the metal substrate, electroplating an inert metal circuit layer, electroplating a metal circuit layer, removing the photo-resistant films, packaging, processing a hole on the surface of plastic-packaged materials, grooving, electroplating conductive metal, pretreating before metallization, electroplating a metal circuit layer, chemically etching, electroplating a metal circuit layer, mounting a chip and filling at the bottom of the chip, cleaning, balling and cutting to obtain a finished product. The flip-chip single-face three-dimensional circuit fabrication method by etching-first and packaging-second and the packaging structure of the flip-chip single-face three-dimensional circuit have the advantages that fabrication cost is lowered, safety and reliability of a packaged body is improved, environmental pollution is reduced, and design and fabrication of high-density circuits can be truly realized.

The invention relates to an etching-first and packaging-later manufacturing method for a chip formal double-surface three-dimensional circuit and a packaging structure of the chip formal double-surface three-dimensional circuit. The method comprises the following steps of taking a metal substrate; pre-plating copper on the surface of the metal substrate; coating the surface of the metal substrate with green paint; removing a part of the green paint from the back surface of the metal substrate; electro-plating an inert metal circuit layer; electro-plating a metal circuit layer; coating the back surface of the metal substrate with the green paint; removing a part of the green paint from the back surface of the metal substrate; electro-plating the metal circuit layer; coating the back surface of the metal substrate with the green paint; removing a part of the green paint from the back surface of the metal substrate; coating a circuit screen board; pre-processing of metallization; removing the circuit screen board; electro-plating the metal circuit layer; coating the back surface of the metal substrate with the green paint; removing a part of the green paint from the front surface of the metal substrate; chemical-etching; electro-plating the metal circuit layer; coating bonding materials; installing a chip; bonding with metal wires; packaging; tapping at the back surface of the metal substrate; cleaning; implanting a metal ball; and cutting a finished product. The method disclosed by the invention has the beneficial effects that the manufacturing cost is lowered, the safety and the reliability of a packaging body are increased, the environment pollution is reduced, and the design and the manufacturing of a high-density circuit can be really realized.

The invention relates to a normal chip single-faced three-dimensional circuit manufacture method by encapsulation prior to etching. The method includes: taking a metal substrate; preplating copper to the metal substrate surface; coating with green paint; partially removing the green paint on the front of the metal substrate; electroplating inert a metal circuit layer; electroplating a metal circuit layer; coating with green paint; partially removing the green paint on the front of the metal substrate; electroplating a metal circuit layer; coating with green paint; partially removing the green paint on the front of the metal substrate; coating a circuit screen plate; performing metallization pretreatment; removing the circuit screen plate; electroplating metal circuit layer; coating bonding material; mounting a chip; performing metal circuit bonding; encapsulating; partially removing the green paint on the back of the metal substrate; performing chemical etching; electroplating a metal circuit layer; coating with green paint; reserving holes on the green paint; cleaning; attaching balls; and cutting finished products. The normal chip single-faced three-dimensional circuit manufacture method by encapsulation prior to etching has the advantages that manufacture cost is lowered, safety and reliability of encapsulation are enhanced, environmental pollution is reduced, and design and manufacture of high density circuit are really achieved.

The invention discloses a cement terrace pouring device for water conservancy construction, and relates to the technical field of water conservancy construction machinery. The cement terrace pouring device comprises a supporting frame, and travelling wheels are rotatably arranged at the bottom of the supporting frame; a storage barrel is fixed to the supporting frame, and a horizontal frame is fixed into the supporting frame; and the bottom of the horizontal frame is provided with a reciprocating mechanism used for driving a discharging hood to horizontally move, a storage encircling plate isfixed to the bottom of the horizontal frame, and a levelling mechanism for levelling concrete is arranged in the storage encircling plate in a lifting mode. The arranged reciprocating mechanism can drive the discharging hood to horizontally move back and forth, thus the concrete flowing out from the discharging hood can be evenly laid on different positions to be prevented from being accumulated,the workload of subsequent levelling operation is also greatly lowered, and the pouring effect of a cement terrace is better; and meanwhile, the arranged levelling mechanism can level the poured concrete in time, thus it is guaranteed that the poured concrete is not uneven, and the quality of the cement terrace is effectively improved.

The invention discloses a multifunctional vehicle carrying device which comprises a vehicle carrying board, a rotary pallet, a first electric lifting support column, a second electric lifting support column and a controller. A vehicle carrying board body is formed by combining a steel plate layer with an alloy reinforced base layer, a photoelectric transmitter is mounted on one side of the vehicle carrying board through a bolt, a first laser displacement sensor and a second laser displacement sensor are mounted at the edge of the vehicle carrying board on one side of a second limit groove and a third limit groove, gravity sensors are mounted in the middles of the surfaces of a first lifting plate, a second lifting plate, a third lifting plate and a fourth lifting plate, the rotary pallet is mounted at an output end of the first electric lifting support column through an electric turntable bearing, and a controller is mounted on the surface of one side of a storage battery through a bolt. By the aid of a series of structures, vehicles can be effectively controlled and adjusted in the vehicle carrying process by the device.

The invention discloses an unfilled corner repairing device for gypsum bricks, and belongs to the technical field of gypsum processing. The unfilled corner repairing device for the gypsum bricks comprises a workbench, a loading device, a pushing device, a clamping device, a fixing device, a stirring and extruding device, a trowelling device, a manipulator, a collecting box, an observer, a transmission belt and two conveying belts, wherein the workbench is placed on the horizontal plane; and the two conveying belts are symmetrically arranged on the workbench, the transmission belt is installed on the workbench, the observer is installed on the workbench, the loading device is installed on the workbench and located between the two conveying belts, and the pushing device, the clamping device, the fixing device, the stirring and extruding device, the trowelling device, the manipulator and the collecting box are all installed at the top of the workbench. According to the invention, the surfaces, with unfilled corners, of the gypsum bricks are adjusted through the loading device, so that the working efficiency of the overall working is increased.

The invention discloses an automatic cutting device for a floor heating PERT tube. The automatic cutting device comprises a base plate; the upper surface of the base plate is fixedly connected with afirst sliding rod; the outer surface of the first sliding rod is connected with a first sliding sleeve in a sleeving manner; the left side surface of the first sliding sleeve is fixedly connected witha first fixing block; the lower surface of the first fixing block is fixedly connected with a rope; and the other end of the rope is fixedly connected with the outer surface of a second driving device. The automatic cutting device for the floor heating PERT tube is provided with a first driving device, the second driving device, the first sliding rod, the first sliding sleeve, a telescopic deviceand a pressing plate; a first motor is controlled to work to make a cutting wheel rotate; subsequently an output shaft of a second motor is controlled to rotate forwards so that the cutting wheel canbe used for automatically cutting a floor heating tube on a carrying plate, thus a worker does not need to use a tool to implement manual cutting, therefore the time and physical strength of the worker are saved, incision positions are smooth, and thus use of the floor heating tube is not affected.

The invention discloses a U-shaped anti-changing column and chute template system for rammed earth walls, which can be used for special template for the construction of the linear rammer body and theL-shaped wall body. The supporting system mainly comprises three aspects: a wood-shaped smooth mold plate, a long-length U-shaped anti-changing column suitable for layer-by-layer compaction, and an adjustable high-strength section steel triangular support frame. The wooden mold plate is inserted into the standard fixed-type long-length U-shaped anti-variable column to form a whole, and the supportside is supported by the adjustable high-strength section steel triangular support frame., and mainly comprises a vertical rod, an inclined rod and a horizontal sliding rod. The two sides of the wallbody are symmetrically arranged to be supported to ensure the stable and follow layer-by-layer support and layer-by-layer compaction, the steel braced tripod square steel tube members are connected with the U-shaped anti-changing columns by pin bolts, and two U-shaped anti-changinge columns at L-shaped corner of rammed earth wall are welded together to ensure that the lateral pressure meets the strength requirements. The U-shaped anti-changing column and chute template system not only can satisfy the linear rammer, but also can realize the dynamic compaction of the L-type wall body with highquality.

The invention discloses building blocks, and belongs to the field of dimensional batten toys. The building blocks comprise first core components and joining elements, wherein each first core component is a regular hexahedron; each first core component is provided with a concave hole; a corresponding joining element is inserted into each first concave hole in the length direction; each concave hole is matched with each joining element; the width of each first concave hole is matched with the width of each joining element. The invention aims to provide the building blocks to realize three dimensional splice of the building block.

The invention relates to a packaging-first and etching-later manufacturing method for a chip formal double-surface three-dimensional circuit. The method comprises the following technology steps of taking a metal substrate; pre-plating copper material on the surface of the metal substrate; carrying out the operation of pasting a photo-resisting film; removing a part of the photo-resisting film from the front surface of the metal substrate; electro-plating an inert metal circuit layer; electro-plating a metal circuit layer; packaging; carrying out the operation of pasting the photo-resisting film; tapping on the surface of plastic package material; electro-plating the metal circuit layer; coating bonding materials; installing a chip; bonding with metal wires; packaging; carrying out the operation of pasting the photo-resisting film; chemical-etching; electro-plating the metal circuit layer; packaging; tapping on the surface of plastic package material; digging a groove on the surface of the plastic package material; electro-plating the metal circuit layer; coating a circuit screen plate; pre-processing of metallization; removing the metal screen plate; electro-plating the metal circuit layer; packaging; tapping on the surface of plastic package material; cleaning; implanting a metal ball; and cutting a finished product. The method disclosed by the invention has the beneficial effects that the manufacturing cost is lowered, the safety and the reliability of a packaging body are increased, the environment pollution is reduced, and the design and the manufacturing of a high-density circuit can be really realized.

The invention relates to a first etched and then packaged packaging structure with a single chip reversedly installed and base islands buried as well as a preparation method thereof. The packaging structure comprises base islands (1), pins (2) and a chip (3), wherein the chip is reversedly installed on the fronts of the base islands and the fronts of the pins; underfills (14) are arranged between the bottom of the chip and the fronts of the base islands and the pins; plastic package materials (4) are arranged in the peripheral regions of the base islands, the regions between the base islands and the pins, the regions between the pins, the regions on the upper parts of the base islands and the pins and the regions on the lower parts of the base islands and the pins and on the periphery of the chip; small holes (5) are arranged on the plastic package materials on the backs of the pins and are communicated with the backs of the pins; and metal balls (7) are arranged in the small holes and are contacted with the backs of the pins. The packaging structure and the preparation method have the following beneficial effects that the preparation cost is reduced; the safety and reliability of the packaging body are improved; environmental pollution is reduced; and design and preparation of high-density circuits are truly achieved.

The invention relates to a multi-chip horizontal packaging, etching-after-packaging and pad exposed packaging structure and a manufacturing method thereof. The structure comprises pads (1) and pins (2). A plurality of chips (4) are arranged on the right sides of the pads (1), and the right sides of the chips (4) and the pins (2) are connected through metal wires (5). Molding compounds (6) are packaged on the peripheries of the pads (1) and the pins (2) and outside the chips (4) and the metal wires (5). Holes (7) are opened on the surfaces of the molding compounds (6) on the lower portions of the pads (1) and the pins (2). Metal balls (9) are arranged in the holes (7) and contacted with the reverse sides of the pads (1) or the pins (2). The multi-chip horizontal packaging, etching-after-packaging and pad exposed packaging structure and the manufacturing method thereof have the advantages of reducing manufacturing costs, improving safety and reliability of packaging bodies, reducing environmental pollution, and being capable of designing and manufacturing high-density lines.

The invention relates to a multi-chip reversely-arranged etched-encapsulated base island-exposed encapsulating structure and a manufacturing method thereof. The structure comprises a base island (1), a pin (2) and a plurality of chips (3), wherein the chips (3) are reversely arranged on the front faces of the base island (1) and the pin (2); bottom filling adhesives (14) are arranged between the bottoms of the chips (3) and the front faces of the base island (1) and the pin (2); plastic sealing materials (4) are enveloped in a region on the periphery of the base island (1), a region between the base island (1) and the pin (2) and a region between adjacent pins (2) and outside the chips (3); the surfaces of the plastic sealing materials (4) on the lower parts of the base island (1) and the pin (2) are provided with small holes (5); and metal balls (7) are arranged in the small holes (5). The multi-chip reversely-arranged etched-encapsulated base island exposing encapsulating structure has the beneficial effects that the manufacturing cost is lowered, the safety and the reliability of an encapsulating body are enhanced, environmental pollution is lowered, and design and manufacturing of a high-density circuit are realized truly.

The invention relates to a multi-chip reversely-arranged etched-encapsulated base island-buried encapsulating structure and a manufacturing method thereof. The structure comprises a base island (1), a pin (2) and a plurality of chips (3), wherein the chips (3) are reversely arranged on the front faces of the base island and the pin; bottom filling adhesives (14) are arranged between the bottoms of the chips and the front faces of the base island and the pin; plastic sealing materials (4) are enveloped in a region on the periphery of the base island, a region between the base island and the pin, a region between adjacent pins, regions on the upper parts of the base island and the pin, regions on the lower parts of the base island and the pin and the peripheries of the chips; the plastic sealing materials on the back face of the pin are provided with small holes (5); and metal balls (7) are arranged in the small holes (5), and are contacted with the back face of the pins. The multi-chip reversely-arranged etched-encapsulated base island-buried encapsulating structure has the beneficial effects that the manufacturing cost is lowered, the safety and the reliability of an encapsulating body are enhanced, environmental pollution is lowered, and design and manufacturing of a high-density circuit are realized truly.

The invention provides a method for manufacturing an annular lifting belt with weft constraint. The method comprises the steps that a fiber tow penetrates through a sheath in a laminated state, and sheaths a driving wheel and driven wheel of winding equipment, and tensioning is carried out; a threadlet tow winds round the fiber tow; the winding equipment is started, a motor of the winding equipment drives the driving wheel to rotate, the driving wheel rotates to drive the annular fiber tow to rotate, at the same time, a rotating device drives the threadlet tow to wind round the fiber tow to constrain the fiber tow and a multi-bundle annular loop is formed through rotation, and the production of a bearing core of the annular lifting belt is completed; after the threadlet tow winds a certain number of turns, the sheath is pulled apart, and the two ends of the annular loop are stitched to complete the production of the annular lifting belt. The method for manufacturing the annular lifting belt with the weft constraint has the advantages that the threadlet tow is used for constraining the fiber tow to prevent the fiber tow from loosening and being misplaced, which can improve the utilization of the tow, reduce the production cost, and improve the use stability of the produced annular lifting belt.

The invention relates to a single-side three-dimensional circuit chip upside-down-charging packaging-before-etching method, which comprises the following process steps: taking a metal baseplate; pre-plating copper on the surface of the metal baseplate; pasting light resistant films; removing part of the light resistant films on the front surface of the metal baseplate; electroplating an inert metal circuit layer; electroplating a metal circuit layer; pasting light resistant films; removing part of the light resistant films on the front surface of the baseplate; electroplating a metal circuit layer; removing the light resistant films on the surface of the metal baseplate; encapsulating; processing before metallization; electroplating a metal circuit layer; removing the light resistant films on the surface of the metal baseplate; mounting a chip and filling the bottom of the chip; encapsulating; chemically etching; removing the light resistant films on the surface of the metal baseplate; electroplating a metal circuit layer; encapsulating; cutting holes in the surface of plastic packaging materials; washing; mounting balls; and cutting finished products. The method and the structure disclosed by the invention has the benefits that the manufacture cost is lowered, the safety and reliability of the packaged body are improved, and the environment pollution is reduced, so that design and manufacture of high-density circuits are realized actually.

The invention relates to a knife grinder for a hay cutter, and belongs to the field of agricultural production. A polishing device is arranged at the top end of a first support; a pressure sensor is arranged on a second support; a first hydraulic cylinder is arranged on the pressure sensor; a controller is arranged on a working table; a first ultrasonic sensor is arranged on a third support; a limiting device is arranged on a fifth support; a limiting plate is arranged on a fourth support; a second ultrasonic sensor is arranged on a sixth support; and a rubber pad is arranged on a main shaft of the first hydraulic cylinder. According to the knife grinder for the hay cutter provided by the invention, a blade is pressed on the limiting plate through the first hydraulic cylinder, a position of the blade is detected through the three ultrasonic sensors, a grinding wheel clings to a knife edge through the second hydraulic cylinder, and the knife edge is polished through reciprocating movement of the rotating grinding wheel by repetitive co-rotation and reverse rotation of a first electromotor, so that a manual knife edge polishing process is replaced, the polishing quality and the polishing efficiency are improved, and the safety of workers is ensured.

The invention discloses an oval bamboo weaving mold. The oval bamboo weaving mold is characterized in that rubber band grooves are formed in the middles of a component A, a component B, a component C,a component D and a component E respectively, an annular rubber band is clamped into the rubber band grooves formed in the middles of the component A, the component B, the component C, the componentD and the component E respectively, an oval sphere with a vertical penetrating hole is formed through combination, a middle column is inserted in the component A, the component B, the component C, thecomponent D and the component E, and a handle is screwed into a screw hole formed in the center of the upper surface of the middle column. The oval bamboo weaving mold is convenient to combine, products are woven with the mold and are uniform and even in shape, free of irregularity and good in radian, and the mold is convenient to use.