50 results about "Trapped air" patented technology

An apparatus can include a bonding head. The bonding head can include a bonding head body, a die chuck body, and lands. The bonding head body can be coupled to the die chuck. The lands can define zones. The lands and zones can be configured so that an outer zone can be under vacuum to hold a die while an inner zone is pressurized to cause the die to bow away from the bonding head. The bowed die has a relatively smoother curvature as compared to a die bent by bowing a die chuck that has pins, lands, or both. When the die contacts a substrate using the novel bonding head, the likelihood of trapping air and creating a void during a bonding operation is significantly reduced.

This air cushion portable information terminal case 100 is characterized by forming an air cushion part A sealed by covering a four peripheral frame part F of the portable information terminal case 100 with an outside four peripheral frame part FO and confining air inside.SOLUTION: An air cushion portable information terminal case (100) comprising a four peripheral frame portion (F), an outer four peripheral frame portion (FO), a transparent bottom plate (G), a portable information terminal case housing portion (S), and an air cushion portion (A), wherein the four peripheral frame portion (F) and the outer four peripheral frame portion (FO) are connected to each other, and the portable information terminal case housing portion (S) is surrounded by the four peripheral frame portion (F) and the transparent bottom plate (G).SELECTED DRAWING: Figure 4

Aspects of the present disclosure describe a vacuum luer lock connector comprising: a male luer configured to be coupled to a female luer defining a fluid passageway; a vacuum chamber between the male luer and the female luer, the vacuum chamber retaining air when the male luer is pushed into the female luer; a solid cylinder surrounding the male luer and serving as a piston, a cylindrical member surrounding the female luer and serving as a wall of the vacuum chamber; and a vent channel in the female luer, the vent channel allowing air to escape when the male luer is pushed into the female luer. The male luer and the female luer remain connected by a force created in a vacuum chamber surrounding the luers.

The utility model discloses a thin-wall forming die. Comprising a panel, an upper mold, a lower mold, an ejector plate and a bottom plate, an upper mold core and a lower mold core are arranged on the upper mold and the lower mold respectively, an exhaust insert is arranged on a lower mold core insert, and the air trapping problem is solved. The ejection mechanism comprises an inclined ejection assembly and an ejector pin, and the inclined ejection assembly acts on a product rib position and is matched with the ejector pin to eject a product. The ejector plate is stable in structure, the bottom plate is provided with limiting and guiding components, the lower die is reasonably connected with the upper die, and die precision and stability are guaranteed. The panel and the bottom plate are provided with heat insulation plates, and the lower heat insulation plate is provided with related parts, so that the mold performance is improved, heat transfer is reduced, the service life of equipment is prolonged, production efficiency and product quality are improved, and large-batch production requirements of thin-wall products are met.

The invention relates to a method for producing a seal on a substrate, in particular on a layer of an electrochemical cell, by means of stencil printing, the method comprising the following steps: a) applying a sealant and / or adhesive (3) to a stencil (4) resting on the substrate to be printed; b) filling at least one recess (5) of the stencil (4) with the sealant and / or adhesive (3) using a doctor blade (6) which is drawn over the stencil (4) in a predetermined doctor blade direction for this purpose such that the doctor blade (6) presses the sealant and / or adhesive (3) into the at least one recess (5); and c) releasing the sealant and / or adhesive (3) from the stencil (4). According to the invention, the doctor blade process in step b) is recorded with the aid of at least one camera (7), and the recording is subjected to an image analysis in order to detect defects, in particular trapped air bubbles (8).

The utility model relates to a brushless motor iron core plastic coating mould which is provided with an upper mould body, a lower mould body and a middle mould body, a forming mould is arranged in the middle mould body, a cavity for placing a motor iron core to be coated with plastic is arranged in the forming mould, an injection molding runner is arranged between the upper mould body and the cavity of the forming mould, four plastic coating areas are uniformly distributed in the circumferential direction of the motor iron core, and the plastic coating areas are arranged in the middle mould body. Two spaced inserts are positioned and arranged in the cavity corresponding to each plastic coating area, the lower ends of the two inserts in each plastic coating area are embedded in the motor iron core, the upper ends of the two inserts are matched with the upper end of the cavity, and exhaust grooves are formed in the outer side surfaces of the inserts. According to the utility model, the inserts of which the outer side surfaces are provided with the exhaust grooves are positioned in the four plastic coating areas of the motor iron core, so that trapped air generated on the surface of the motor iron core can be timely exhausted through the exhaust grooves in the plastic coating process, the collapse phenomenon of the plastic coating areas caused by accumulation of the trapped air in the plastic coating areas can be effectively prevented, and the service life of the motor iron core is prolonged. And the plastic coating quality of the surface of the motor iron core is ensured.

The utility model provides a thickened warm-keeping type automobile seat fabric which comprises a blended base layer fabric, the fabric fluff is arranged on the blended base layer fabric, and the blended base layer fabric is located between a warm-keeping interlayer and a leather fabric layer. The blending base layer fabric, the back lining layer, the warm-keeping interlayer and the leather fabric layer are sewn together through the sewing threads; fluff leaking holes are formed in the warm-keeping interlayer and the leather fabric layer; the long fluff of the blended base layer fabric is matched with the warm-keeping interlayer, air is stored to form a heat insulation layer, heat loss is reduced, and the warm-keeping effect is good; villus leaking holes are formed in the warm-keeping interlayer and the leather fabric layer, so that long villus can penetrate out, air circulation is facilitated, and the air permeability is improved; the layers are tightly combined through a plurality of suture lines, the backing layer is thick, the structural stability and durability are enhanced, and comfortable experience is brought to drivers and passengers.

This utility model discloses an ink printing bubble removal mechanism, relating to the field of ink printing. The mechanism includes a third layer of ink printing stencil with R-shaped grooves at its four corners to collect and expel air. Air guide grooves are equidistantly spaced around the R-shaped grooves. A first ink layer is printed on the inner side of the outer glass, and a second layer is printed on top of the first layer. A height difference exists between the R-shaped grooves and the second ink layer to collect air. This mechanism extends the four right angles of the third ink printing stencil outwards to form R-shaped grooves. The height difference between the R-shaped grooves and the second ink layer provides space for collecting minute amounts of trapped air. When bonding OCA adhesive, trapped air can be expelled to the R-shaped grooves, effectively preventing the formation of air bubbles in the visible area and improving the product's appearance quality.

This utility model relates to the field of rewinding processing devices, and discloses a device suitable for rewinding roll materials, including a first winding device and a second winding device. The first and second winding devices are respectively disposed at both ends of the equipment base, and are used to receive and rewind the roll material respectively. A main feed roller is disposed in the middle position between the first and second winding devices, and is used to pull the roll material forward along the transmission path. A first correction probe and a second correction probe are located before and after the main feed roller, respectively disposed on the unloading side and the winding side, and are used to detect the edge position of the roll material and provide feedback correction signals. This utility model, through the active bonding function of the winding pressure roller, can effectively eliminate trapped air during the rewinding process, improve winding tightness and product yield, and is particularly suitable for processing materials such as tape, aluminum foil, and non-woven fabrics that require high roll density.

An apparatus can include a bonding head. The bonding head can include a bonding head body, a die chuck body, and lands. The bonding head body can be coupled to the die chuck. The lands can define zones. The lands and zones can be configured so that an outer zone can be under vacuum to hold a die while an inner zone is pressurized to cause the die to bow away from the bonding head. The bowed die has a relatively smoother curvature as compared to a die bent by bowing a die chuck that has pins, lands, or both. When the die contacts a substrate using the novel bonding head, the likelihood of trapping air and creating a void during a bonding operation is significantly reduced.

The invention relates to an automobile part injection mold trapped air multistage release device which comprises an upper mold, a lower mold, an upper mold cavity and a lower mold cavity, a cavity is formed between the upper mold cavity and the lower mold cavity, a first exhaust groove is formed in the upper mold, the first exhaust groove communicates with the cavity and the external environment, a vacuum buffer cavity is formed in the first exhaust groove, and the first exhaust groove is of a layered structure design. Comprising a main exhaust groove, branch exhaust grooves formed in the two sides of the main exhaust groove in a tree-shaped structure and micro exhaust grooves distributed in the circumferential sides of the branch exhaust grooves, a temperature control module is arranged in the main exhaust groove, and the bottom ends of the micro exhaust grooves penetrate through the upper die and extend to an upper die cavity to be communicated with the upper die cavity; a micropore module is embedded in the mold parting surface and communicates with the flow channel and the external environment. By adopting the synergistic effect of the multi-stage exhaust structure, compared with the traditional single-stage exhaust design, the exhaust efficiency can be greatly improved, and meanwhile, the melt retention risk is reduced.

A life jacket formed from a shell defining an interior air chamber in the shape of a conventional life jacket. The shell includes a neck opening configured to position a lower section of the shell against a front torso of a user and an upper section of the shell behind a head of the user. A reusable seal is coupled to the upper section of the shell and is operable to selectively open and close access to the interior air chamber. A fastening assembly secures the seal in a fixed closed position. An attachment strap is coupled to the lower section of the shell and is configured to wrap around the torso of the user to secure the shell in place. The life jacket is movable between a deflated condition. When deflated the shell may be folded or rolled into a compact configuration for storage. When inflated, the reusable seal traps air within the interior air chamber and the upper section of the shell is rolled at least two turns and secured by the fastening assembly to prevent unrolling and to compress the trapped air, thereby maintaining buoyancy of the life jacket.

This invention relates to the field of tunnel construction technology and discloses a prefabricated, assembled, reinforced waterproof material and its preparation method. The material includes a pre-installed adhesive tape, a non-woven fabric with a napped surface, a self-adhesive layer, and a layered composite waterproof board. The layered composite waterproof board is composed of upper and lower PE waterproof board layers and a middle EVA waterproof board layer. The separately prepared premixed materials are extruded into a three-layer co-extrusion die and cooled to obtain the layered composite waterproof board. A self-adhesive layer is coated on its surface to form a self-adhesive layer, which is then bonded to the un-nafted surface of the non-woven fabric. Finally, the napped surface of the non-woven fabric is physically pressed and bonded to the pre-installed adhesive tape. This invention improves interlayer bonding and prevents material delamination by employing a multi-layered composite structure and using a compatibilizer. The pre-installed adhesive tape and the napped surface of the non-woven fabric form a mechanical interlocking network, eliminating the need for hot-melt welding. The self-adhesive layer is distributed in strips to create venting channels, effectively removing trapped air and preventing delamination.

A system (50) for separating particles in a fluid has a first (52) and a second chamber (54) connected via a connector (56) with two ends, the first end (58) connecting to the first chamber (52) and the second end (60) connecting to the second chamber (54). The first chamber is higher than the second chamber and is connected pneumatically to an ambient atmosphere (66). The second chamber (54) is connected pneumatically or fluidically only to the first chamber via the connector only. A first method of operating the system includes adding a liquid to the first chamber to trap air in the connector and the second chamber; centrifuging the system at a first relative centrifugal force (RCF1) such that no part of the liquid enters the second chamber, and some air remains trapped in the connector; centrifuging the system at a second relative centrifugal force (RCF2) higher than RCF1, so at least a part of the liquid is transferred from the first chamber to the second chamber through the connector; and centrifuging the system at a relative centrifugal force (RCF3) lower than RCF2 so at least a part of the liquid is transferred from the second chamber to the first chamber through the connector. A second method of operating the system includes first adding a liquid containing particles to the first chamber to trap air in the connector and in the second chamber; then, centrifuging the system at a first relative centrifugal force (RCF1) so part of the air remains trapped in the connector and no particles are transported to the second chamber; then, centrifuging the system at a second relative centrifugal force (RCF2) higher than RCF1, so part of the liquid is transferred from the first chamber to the second chamber through the connector; and finally, centrifuging the system at a relative centrifugal force (RCF3) lower than RCF2 so part of the liquid is transferred from the second chamber to the first chamber through the connector.

The disclosure includes a method comprising determining that solar heat gain exists in trapped air between a window shade and a window and opening a controllable damper to exhaust the trapped air. The method may also include obtaining occupancy data about an occupant based on at least one of a home automation system or a security system. The method may also include forecasting, using a sky camera and historical sky conditions, sky conditions associated with a building; and determining, based on the forecasted sky conditions, a setting for at least one of a lighting system or an HVAC system associated with the building. The method may also include changing a timing of an automation routine for adjusting window shades to minimize an impact on peak demand energy usage.

A protective cover for vehicles during floods is disclosed A vehicle (102) is driven over the protective cover in any direction The protective cover is laid flat on a ground, pulled up and zipped along the sides. The rolling tube unrolls due to increasing internal pressure allowing the trapped air to escape. The rolling tube automatically rolls back once the pressure stabilizes. An inner tube (105) includes pores to expel air and a hydrophilic hydrogel to expand and seal the inner tube preventing backflow of water and air. An outer tube (110) to prevent water from entering the inner tube. A cork (115) forms a watertight seal, enhanced by a magnetic rim and spring to secure closure when triggered by a helium-filled float that rises with floodwaters. A trigger attached is adapted to rise with water thereby causing the trigger to be pulled out of its notch and releases the cork.

Method for manufacturing an insulating panel (10) with a device (20) comprising a pressing tool (21) with at least one counter-form (22) and at least one pressing part (23), wherein the counter-form (22) has at least one recess (24) for forming the insulating panel, and the method comprises the following steps: a) Arranging at least one first cover layer (12') in the recess (24) of the counter-mold (22) and arranging at least one second cover layer (12") on a pressing area (25) of the pressing part (23) facing the recess (24); b) Covering the first top layer (12') with at least one liquid plastic material, c) Inserting at least one core layer package consisting of an insulating core (27) with fiber layers arranged on both sides into the recess (24) of the counter-mold (22), such that at least the first of the two fiber layers is in contact with the liquid plastic material; d) Covering the second of the two fiber layers with the liquid plastic material, and e) Pressing the pressed part (23) with the pressing area (25) against the counter-form (22), wherein the core layer package is pressed together with the liquid plastic material and the two cover layers (12', 12") to form the insulating panel, and in which process f) at least one venting insert (26), which serves to remove the air trapped between the counter-mold (22) and the pressing part (23) during the pressing process, is arranged on an edge (28) of the counter-mold (22) adjacent to the recess (24), wherein the venting insert (26) is permeable to air and, in a closed state of the pressing tool (21), connects the recess (24) of the counter-mold (22) to the outside atmosphere, and wherein the venting insert (26) is designed to be liquid-tight, so that it allows trapped air to pass through and retains the liquid plastic material during the pressing process.

This invention discloses an injection mold for automotive dashboard trim panels, belonging to the field of injection mold technology. The mold includes a fixed mold and a moving mold. The moving mold integrates a cold slug control device, a vacuum exhaust device, and an independent conformal cooling device. The cold slug control device uses side injection and a cold slug well at the gate position to trap the first cold slug entering the mold, eliminating silver streaks on the product surface. The vacuum exhaust device includes a vacuum generator installed on the outer side of the moving mold. Through exhaust holes and grooves on the first insert, it draws the mold cavity to a negative pressure of -0.06 to -0.09 MPa within 0.3 to 1.0 seconds after mold closing, allowing gas to be pre-expelled during rapid filling, preventing trapped air bulging and burning. The independent conformal cooling device provides parallel independent cooling water channels directly connected to the interior of the gate insert for each second insert, without bridging by other mold plates, achieving rapid and precise cooling of the gate area and solving the problem of gate whitening.

The invention provides a whole-cycle exhaust structure which is arranged on a mold core and comprises a first exhaust groove, the first exhaust groove surrounds the whole circumference of a cavity and communicates with one end of at least one second exhaust groove, and the other end of each second exhaust groove communicates with an air entraining groove; and the air entraining groove is used for guiding trapped air in the cavity to be discharged. The mold has the beneficial effects that trapped air generated in the mold cavity in the injection molding process can be guided into the air entraining groove from the mold cavity through the first air exhaust groove and the second air exhaust groove in sequence to be exhausted out of the mold cavity, the product is prevented from being subjected to reverse package air trapping and other defects, the mold is not limited by the air trapping position, the applicability is high, and the product yield is increased.

This invention relates to the field of precast concrete mold technology, and more particularly to a high-span precast concrete construction mold, comprising a bottom mold; and a mold assembly, disposed above the bottom mold, including a first support mold, a second support mold, and two second side molds. The first and second support molds are respectively fixedly installed at both ends of the top of the bottom mold, and the two second side molds are fixedly installed on the side walls of the first support mold. Through the movement of the vibrating assembly, the concrete poured into the mold assembly is evenly distributed by the pouring pipe and simultaneously vibrated, improving the density and structural strength of the precast component, ensuring the stability and consistency of the component's forming quality. The reciprocating sliding of the push plate subjects the concrete to uniform lateral pressure, optimizing the concrete flow distribution, reducing the risk of micro-cracks, and simultaneously creating a dynamic compaction effect with the vibrating assembly, eliminating trapped air bubbles in the corner areas of the mold assembly, and improving the filling density of the corner concrete.

The utility model relates to a water purifier, the water purifier comprises a hot water container, the hot water container comprises a tank body, the tank body is provided with a water storage cavity and a first water outlet communicated with the bottom of the water storage cavity; the second pump body is transversely arranged below the tank body and comprises a second water outlet, a pump chamber and a second water inlet which are communicated in sequence; the second water inlet is communicated with the first water outlet, and the second water outlet is located in the top of the pump cavity. According to the water purifier and the hot water container of the water purifier, the arrangement position of the second pump body and the arrangement position of the second water outlet of the second pump body are optimized, so that air trapping in the pump cavity can be reduced or avoided, and meanwhile, the occupied space of the hot water container in the height direction of the water purifier can be saved.

The application discloses a kind of upper and lower layered impact-resistant super-hydrophobic surface micro-nano structures, including substrate and the composite structure layer being set on the substrate, the composite structure layer includes upper layer open structure and lower layer closed structure;The upper layer open structure includes the protrusion type microstructure unit array;The lower layer closed structure includes the closed microstructure unit array;The bottom height of the upper layer open structure is not less than the opening end height of the lower layer closed structure.The application is by open protrusion structure being set in upper layer, closed recess structure is set in lower layer and height relationship is limited, static liquid drop only contacts upper layer to realize low adhesion, under dynamic impact, lower layer structure intercepts three-phase line and uses trapped air layer to convert impact energy, so as to give consideration to the static super-hydrophobic performance of structure and dynamic impact-resistant performance.

The present disclosure discloses a sealing structure, including: a first housing including a raised upper connecting wall; the second shell can be buckled with the first shell and jointly surround and limit the annular sealing cavity, the second shell is provided with a lower connecting wall and an upper connecting wall and / or an exhaust groove formed in the lower connecting wall and communicated with the annular sealing cavity, the exhaust groove is communicated with the outside in the buckling process of the first shell and the second shell, and after buckling is completed, the exhaust groove is communicated with the outside. And the exhaust groove is sealed by a sealant arranged between the upper connecting wall and the lower connecting wall. According to the sealing structure, gas in the annular sealing cavity can be rapidly exhausted in the sealing assembly process, the balance of air pressure inside and outside the cavity after sealing is improved, rubber line breakage or sealing failure caused by air trapping is fundamentally avoided, meanwhile, no hole needs to be additionally formed in the appearance face of a product, and the integrity and consistency of the appearance of the product are guaranteed.

The utility model discloses an electronic water pump air trapping prevention stator core and casing combination structure, which comprises a stator core and a plastic casing wrapping the stator core, and at least one exposed belt from the bottom of the stator core to the top of the stator core is formed at the position of a tooth groove and / or a tooth crest of the plastic casing. According to the exposed belt, the stator iron core is not wrapped by the plastic casing, the original structure pattern is kept, and by arranging at least one exposed belt from the bottom to the top of the stator iron core, in a thermal change state, the plurality of stator sheets of the stator iron core can be discharged from the exposed belt when air in a small air cavity formed by stacking expands. The problem that the water pump shell expands or cracks when air in the small air cavity expands in the thermal change state of an existing fully-coated water pump shell is solved.

The utility model belongs to the technical field of sound equipment parts, and particularly relates to a sound equipment shell and a sound equipment. The sound equipment shell comprises a shell main body and a soft rubber panel, the bottom surface of the shell main body is provided with a mounting groove with an opening back to the shell main body, and the top surface of the soft rubber panel is attached to the bottom wall of the mounting groove; an air exhaust groove is formed in the bottom wall of the mounting groove, one end of the air exhaust groove is arranged close to the center of the mounting groove, the other end of the air exhaust groove spirally extends outwards to the side wall of the mounting groove around the end part of one end of the air exhaust groove, and the air exhaust groove is used for exhausting air between the bottom wall of the mounting groove and the soft rubber panel. When the soft rubber panel is attached to the bottom wall of the mounting groove, air between the soft rubber panel and the bottom wall of the mounting groove can be exhausted outwards in the extending direction of the exhaust groove, so that the soft rubber panel is prevented from bulging due to air trapping, and the appearance quality of the sound box shell is guaranteed.

The present application relates to the field of drying equipment, and more specifically, to a method for repairing a fault in a drying equipment, a controller, and the drying equipment. The method comprises obtaining liquid level data collected by the liquid level detector; and controlling the drainage pump to operate according to a preset first start-stop parameter or a second start-stop parameter based on the difference between the liquid level data and a preset first liquid level threshold value, wherein the first start-stop parameter is a commonly used parameter, the second start-stop parameter is a parameter used for fault repair, and the stop time in the second start-stop parameter is greater than the stop time in the first start-stop parameter. Since the stop time in the second start parameter is greater than the stop time in the first start-stop parameter, a larger amount of water can be accumulated in the drying equipment, so that the drainage pump can squeeze out the trapped air due to the larger amount of water discharged, thereby repairing the fault of poor drainage.

A pressure sensor structure, a method of manufacturing a pressure sensor structure, a method of using the pressure sensor structure, and a device incorporating the pressure sensor structure. The pressure sensor structure includes a chamber having a closed bottom and an open top; an array of working electrode surfaces disposed within the chamber and extending from the bottom of the chamber to the open top; the counter electrode is formed outside the cavity; wherein the chamber provided with the working electrode surface is configured to trap air when the chamber is immersed in a liquid; wherein the working electrode surface can make electrical contact from the outside of the chamber; and wherein, when air is trapped in the chamber, a change in capacitance between the working electrode and the counter electrode is a measure of a change in pressure of the liquid into which the chamber is immersed.

An air removal apparatus for an autoinjector is disclosed. The air removal apparatus can remove or trap air within the autoinjector, preventing the removed or trapped air from displacing medicament or being injected into the patient. The air removal apparatus removes or traps air by creating a vacuum. The vacuum can remove air from the medicament and can trap air within a section of the auto injector that is separated from the medicament.

The utility model relates to a motor rear cover casting mold, the top end of an upper mold is provided with an injection molding opening, and the left side of the injection molding opening is provided with a slag discharging groove used for discharging impurities in molten metal liquid; an opening and closing assembly used for discharging impurities on the filter plate to the slag discharging groove is arranged on the left side of the filter plate. During molding, molten metal liquid is poured into the injection molding opening and enters the storage cavity, the molten metal liquid in the storage cavity is poured into the molding cavity along the two injection molding pipes, trapped air in the molding cavity can be discharged through the two air outlet grooves, and meanwhile cooling of the motor rear cover in the molding cavity can be accelerated; meanwhile, the cooling pipe spirally cools in the cooling cavity, so that the cooling of the motor rear cover in the forming cavity can be accelerated; and finally, the limiting plate is controlled by the handle to move the sealing plate upwards, so that the injection molding opening can be communicated with the slag discharging groove, and the cooled impurities on the filter plate can be discharged along the slag discharging groove.

The invention discloses a method for testing the starting flow velocity of a retained air mass of a long-distance pressure water delivery pipeline. The method comprises the following steps: acquiring geometric parameters corresponding to the retained air mass of various geometric dimensions and the actual starting speed for driving the retained air mass to move by adopting a test; according to the geometric parameters, calculating the characteristic length of the retention air mass by adopting a plurality of characteristic length calculation methods of the retention air mass, and calculating a drag coefficient based on the characteristic length; according to the drag coefficient of the retained air mass of each size and multiple stresses in water, calculating a theoretical starting flow velocity by adopting a starting flow velocity model of the retained air mass; calculating a relative error between the actual starting speed corresponding to each size and the theoretical starting speed corresponding to different characteristic length calculation methods, and drawing a relative error curve corresponding to the same characteristic length calculation method; according to the change trend of the relative error curve, a characteristic length calculation model of the retained air mass is constructed, the drag coefficient is updated by adopting the characteristic length calculation model, and then the starting flow velocity model is updated.