37results about How to "Control gap" patented technology

A fuel injector comprises an injector body having a tip portion defining a spray aperture; a pintle extending within the tip portion for axial movement between an extended position and a retracted position, the pintle having a head portion engageable with the spray aperture to close the spray aperture when the pintle is in its retracted position; biasing means being provided for biasing the pintle towards its retracted position; and solenoid means for selectively moving the pintle into said extended position; said solenoid means comprising an electromagnetic coil and a moveable armature capable of being acted upon by the coil to urge the pintle towards its extended position; wherein the pintle and armature are separable from one another whereby the armature can decouple from the pintle when the pintle moves from its extended position to its retracted position.

A flow control including an annular flexible member and an internal post disposed downstream of the flexible member is described. The annular flexible member has a deflectable inner edge that defines a passage channel and the annular flexible member and internal post define a control gap therebetween wherein the deflectable inner edge of the annular flexible member deflects axially under increasing fluid pressure to reduce the control gap and consequently control fluid flow.

Provided is a manufacturing method of an electronic parts module which can reliably shield electronic parts and implement a compact size. An assembly board (10) forming a plurality of electronic parts modules (1) from a plurality of electronic parts (12,13) is sealed as a whole by resin. Notches (17) are formed from the top surface of the sealed sealing resin layer (14) at the boundaries of the electronic parts modules (1) to positions which reach the ground electrode (16) provided inside of the assembly board (10). After a conductive resin (18) sheet is positioned to cover the notches (17) and the top surface, the conductive resin (18) fills in the notches (17) and connects to the ground electrode (16) by applying pressure and heating the assembly board (10) with the conductive resin (18) sheet placed thereon.

The invention discloses a preparation method of a Fe3O4-Co3O4 porous magnetic composite material. The preparation method comprises the following steps of (a) blending, (b) heating, (c) drying and (d) calcining. In comparison with the prior art, the invention has the following advantages: (1) other oxides are not found in the product, and the product is a heterogeneous material and has uniform particle size, special morphology, high activity, simple one-step synthesis method, large apparent density, and good magnetic performance; (2) the method has high yield, low cost, short production flow and is convenient in scale-up experiment; (3) the method is simple and controllable, and has low demand for equipment, so that the method is suitable for industrial production; and (4) the magnetic material with a heterogeneous oxide core-shell structure provided by the invention can be effectively applied to lithium-ion and fuel cell materials.

The invention provides a method for constructing a special-shaped template of a comprehensive pipe gallery. The method comprises the following steps that 1, according to the construction drawing, modeling design on the special-shaped template is carried out, the size of a standard section is determined and a manufacturing material is selected; 2, the size of a fixed template is determined and thenbent according to the angle requirement of a special-shaped part of the comprehensive pipe gallery, then a spliced template is processed according to the size of the fixed template, and finally the spliced template is spliced and fixed to the fixed template to form the special-shaped template; 3, the special-shaped template is integrally arranged at the special-shaped part of the comprehensive pipe gallery, and a supporting frame is built in the fixed template for reinforcing the special-shaped template; and 4, after the special-shaped template is fixed, concrete pouring is carried out on thespecial-shaped part of the comprehensive pipe gallery, the special-shaped template is disassembled after pouring is completed, and the special-shaped template is pushed and conveyed to the next construction section for further construction. According to the method for constructing the special-shaped template of the comprehensive pipe gallery, the difficulty of installation of the special-shaped template in the construction process is lowered, and the time required for the installation of the special-shaped template in the construction process is shortened.

The invention relates to the technical field of dough kneading machines, and discloses an advanced vacuum kneading machine equipment, which includes a fixed base, a kneading cylinder is movably installed on the inner side of the fixed base, and a cover is movably installed on the upper end of the kneading cylinder, and the fixed base is The inside of the cover is rotatably equipped with rotating gears, between the two rotating gears there is fixedly installed a kneading bar that runs through the kneading cylinder, and movable tubes are installed movably on the left and right sides of the inside of the cover. In the present invention, when it is necessary to add water to the inside of the device during the kneading process, the control device inside the fixed base controls the movable baffle to move up and down inside the ball plate, so that the water flow inside the movable tube can enter the fixed plate through the movable baffle At the same time, the movable intubation tube moves to the outside of the fixed plate, which can control the gap between the water delivery tank and the fixed plate, adjust the size of the water flow, control the amount of water added, and prevent the failure of the kneading work caused by excessive water addition.

The invention provides a display substrate, a preparation method thereof, and a display device. The display substrate includes a stacked microcavity structure layer and a light-emitting structure layer. Reflective electrodes are arranged in the microcavity structure layer, grooves are arranged on the surface of the microcavity structure layer, and the light-emitting structure layer includes The first electrode in the groove is connected to the reflective electrode. The present invention forms a groove on the microcavity structure layer, and the first electrode of the light emitting structure layer is arranged in the groove, effectively controlling the gap between the first electrode and the microcavity structure layer, and not only solves the problem of existing silicon-based There is a short-circuit problem between the cathode and the anode in the preparation process of the OLED microdisplay, and the surface flatness and uniformity requirements of the subsequent evaporation are guaranteed.

The invention discloses a manufacturing method of a thinned fingerprint module with strong adhesion, and relates to the field of fingerprint modules; it comprises the following steps: (1) packaging a fingerprint recognition chip on a PCB board through SMT technology; (2) packaging the fingerprint recognition chip on a PCB board; The side of the fingerprint chip is wrapped with elastic material; (3) laser square patterns on the bottom of the metal ring, apply underfill glue and perform defoaming baking, after baking, apply conductive silver glue and structural glue on the side of the metal ring for secondary baking; (4) Attach the processed metal ring to the elastic material and bake at constant pressure; (5) Lay the square pattern on the bottom of the PCB board and the upper part of the reinforcement board with structural glue and bake; (6) Dot structural glue on the cover plate, attach the cover plate on the fingerprint identification chip, and make the thinned fingerprint module with strong adhesion; the fingerprint module made by the present invention has a thinner thickness, and the metal ring The gap between the chip and the chip is more uniform and the gap becomes smaller.

The invention is the field of optical fiber gyroscope fiber optic ring manufacturing technology, which involves a method of precision winding for fiber fiber ring.The method of the present invention includes the following steps: determine the length of the fiber and the structure of the fiber ring; the winding of the winding of the winding; select the applicable partial fiber; the single -mode fiber winding;When the present invention needs to solve the existing optical fiber surrounding method. When a large -length fiber ring is winding, the geometric symmetry of the fiber ring cannot be guaranteed, so that the zero drift of the fiber ring of the fiber ring is too large, which affects the technology of inertia.The problem, by customizing the single -mode fiber and winding workers with special sizes, ensure that the gap between the fiber can be controlled when preserving the optical fiber, and fix the number of fiber turns in each layer.The geometric symmetry of the ring reduces the zero drift of the fiber ring under the temperature of the fiber ring, and improves the accuracy of the inertial gyroscope.

The invention discloses a fingerprint module assembly method for improving gaps, and relates to the field of fingerprint modules; it comprises the following steps: (1) packaging a fingerprint identification chip on a PCB board through SMT technology; Wrap the material and put it into the baking machine to bake; (3) Dot underfill glue on the bottom of the metal ring and perform defoaming baking. After baking, dot conductive silver glue and structural glue on the side of the metal ring, and bake again; (4) ) bonding the metal ring after dispensing on the elastic material described in step (2), and baking at a constant pressure; (5) pointing structural glue on the cover plate, and bonding the cover plate on the fingerprint identification chip; (6) ) below the PCB board with glue to stick the reinforcing plate to make the fingerprint module; the cover plate is bonded after the metal ring is bonded, which can better control the gap between the cover plate and the metal ring to avoid It solves the problem in the prior art that the gap between the cover plate and the metal ring is large on one side and small on the other.