9results about How to "Avoid fracking" patented technology

This invention discloses a novel electroplating method for integrated circuits, belonging to the field of semiconductor manufacturing technology. The method includes: Step 1: preparing a wafer and coating a positive photoresist layer on the wafer; Step 2: shielding the edge region of the positive photoresist layer using a shielding ring; Step 3: exposing the positive photoresist layer on the wafer, wherein the edge region is not exposed due to being shielded by the shielding ring; Step 4: developing the exposed positive photoresist layer to form a window structure on the positive photoresist layer on the wafer, while retaining the unexposed positive photoresist layer in the edge region, thereby forming a continuous region without windows in the edge region. This invention can improve the plating defects of positive photoresist at the wafer edge, enhance the quality and yield of bump fabrication and packaging, and can be applied to all bump fabrication and packaging fields.

The utility model discloses a split combined type electromagnetic flowmeter, which relates to the technical field of electromagnetic flowmeters and comprises a first shell, the top of the first shell is connected with a second shell, and four supporting seats are fixed above the inside of the second shell and below the inside of the first shell. The tops of the four supporting seats and the bottoms of the other four supporting seats are connected with protective shells, and coils are installed in the two protective shells. Clamping frames penetrate through the outer surfaces and the backs of the first shell and the second shell, electrodes are connected to the interiors of the two clamping frames through sealing sheaths, and two clamping bolts penetrate through one sides of the two clamping frames. Through the arrangement of the first shell and the second shell, the split type structure of the first shell and the second shell is convenient for splitting the shell of the electromagnetic flow meter, so that the coil or the electrode in the electromagnetic flow meter can be independently replaced; maintenance and replacement are convenient, and waste is reduced.

This invention relates to a bidirectional protection device and method for lifting beams and wire ropes. The device includes at least one protection module, comprising an upper protection seat and a lower protection seat, which are fixedly connected by a plug-in mechanism. The upper protection seat has a rebar clearance groove; the lower protection seat has a connecting groove that connects to a wedge-shaped connecting plate and is equipped with the plug-in mechanism. The upper and lower arc-shaped rope support grooves together form a wrapping channel, which has an arc-shaped groove in which an arc-shaped slider is installed. Both the upper and lower protection seats have inner grooves containing elastic damping mechanisms. The inner walls of both the upper and lower protection seats are covered with a biomimetic damping protective layer. This invention converts tensile force into self-increasing clamping force through wedge self-locking, is adaptable to various types of precast concrete beams, is easy to assemble and disassemble, reusable, and equipped with standardized protection methods, significantly improving lifting safety and construction efficiency.

The utility model relates to the technical field of bathroom doors, in particular to an anti-bouncing bathroom door pulley which comprises a clamping assembly, a roller seat, a roller and a limiting cover plate, the roller is connected to the front end of the roller seat, the roller seat is connected to the clamping assembly, a sliding groove is formed in the upper portion of the roller seat, and the front end and the rear end of the sliding groove are open; the lower side of the limiting cover plate protrudes downwards to form a sliding strip, the sliding strip corresponds to the sliding groove, when the limiting cover plate completely slides into the sliding groove along the sliding strip, the front portion of the limiting cover plate is located above the rolling wheel, and the bottom face of the front portion of the limiting cover plate is higher than the top of the rolling wheel. By arranging the limiting cover plate, the upward bouncing height of the pulley can be limited, the pulley cannot jump out of the sliding rail, the front portion and the rear portion of the pulley of the anti-bouncing bathroom door can be connected more stably by arranging the sliding strip to be matched with the sliding groove, and the using stability and safety of the bathroom door are effectively improved; the technical problem that an existing bathroom door pulley is prone to disengaging from a sliding rail when bouncing upwards under external force is solved.

The application discloses a sealing structure and a lead frame thereof. The sealing structure comprises an insulating substrate, a first base island located on a first surface of the insulating substrate, a second base island located on the first surface of the insulating substrate, a first power unit located on the first base island, a second diode located on the second base island, a plurality of pins, a plastic sealing body covering parts of the first base island, the second base island, the power unit, the second diode and the plurality of pins, the first base island and the second base island being arranged on left and right sides of the insulating substrate, the plurality of pins extending from a lower side of the plastic sealing body below the first base island and the second base island, a fourth pad located on the first surface of the insulating substrate, the fourth pad being independent of the first base island and the second base island, a support structure, a first end of the support structure being connected to the fourth pad, a second end of the support structure being connected to a side of the plastic sealing body, and the support structure being fixed to the side of the plastic sealing body to avoid the insulating substrate of the sealing structure being cracked.

The invention discloses a chip pickup device, and belongs to the technical field of chip packaging and manufacturing, a mounting rack of the chip pickup device is provided with a first mounting plate, and a rotation adjusting assembly comprises a rotation driving piece and an adapter piece; a rotating shaft of the rotating driving piece penetrates through the first mounting plate in the vertical direction; the adapter is connected with the rotating shaft; the balance buffer assembly comprises a second mounting plate, a third mounting plate, a guide unit and a first elastic piece; the third mounting plate is arranged between the second mounting plate and the horizontal part, and the first elastic piece abuts against the second mounting plate and the third mounting plate; the guide unit is arranged between the second mounting plate and the third mounting plate; and the pickup head assembly is mounted on the third mounting plate. According to the chip picking device provided by the invention, in the chip picking process, the gravity of the picking head assembly can be prevented from acting on the chip, so that the acting force borne by the chip in the picking process is reduced, the chip is adsorbed in a vacuum mode and synchronously ascends while the ejector pin jacks the film to ascend, and the jacking force on the chip in the jacking process of the ejector pin can be reduced.

The present application relates to the technical field of screw assembly, in particular to an assembling process of a composite gasket for a drill end screw, which comprises the following steps: the drill end screw, the metal gasket and the rubber gasket are supported by the multi-layer composite frame and slide, and are intercepted and stopped by the blocking mechanism on the stamping section; the rubber gasket is contacted with the metal gasket by the pressing cylinder of the stamping mechanism, and then passes through the space surrounded by the pressing pieces; the metal gasket is extruded to wrap the outer side of the rubber gasket, forming the composite gasket; the composite gasket is sleeved into the top section of the drill end screw and assembled by the continuous rising of the pressing cylinder; finally, the servo motor is started in delay to drive the rotating of the pushing block and the forward movement of the drill end screw on the stamping section, and the drill end screw slides out of the composite frame and is collected.

The utility model discloses an accurate guiding anti-crush punching die, which comprises an unloading bottom plate, a lower die positioning block and a side edge positioning block, the unloading bottom plate is provided with an unloading hole, the lower die positioning block is provided with a through hole, the lower die positioning block is fixed on the unloading bottom plate and is used for positioning a main body of a product, and the through hole is communicated with the unloading hole; the side edge positioning blocks are arranged on the side edge of the discharging bottom plate and used for positioning the handle end of a product, the number of the side edge positioning blocks is two, arc-shaped grooves are formed in the side edge positioning blocks, and the two arc-shaped grooves clamp and position the handle end of the product. The positioning device is accurate in positioning, reduces the bad conditions of product crushing, fracturing and the like, and improves the production efficiency.

The utility model discloses glass cup body polishing equipment which comprises an operation table and a supporting frame, a polishing assembly is arranged on the inner side of the supporting frame, a positioning assembly is arranged on the lower side in the supporting frame, and a dust collection assembly is arranged on the rear side of the upper end face of the operation table. A low-speed motor can drive clamping heads on the left side and the right side to synchronously move towards the inner side through a double-threaded rod, a movable plate and a linkage rod so as to clamp and fix a glass cup to be polished, and in the process, a second baffle ring installed on the annular side face of a limiting rod can stop and limit the inwards-moving movable plate; by starting a dust collection fan, most of glass dust in the front can be sucked by the dust collection fan through a through cavity and blown into a dust removal filter bag through a connecting pipe to be filtered, so that the glass to be polished can be cleaned; and therefore, the situation that glass dust generated in the grinding and polishing process cannot be treated in time and hurt the breathing health of surrounding workers is avoided.