15results about How to "Avoid uneven pressure" patented technology

The invention provides a uniform-oiling and adjustable-oiling-rate precursor preparation device and a control method thereof.The uniform-oiling and adjustable-oiling-rate precursor preparation device comprises a pressing roller, a pressing roller driving assembly and an upper filament drawing transmission roller, precursor capable of advancing is arranged on the periphery of the upper filament drawing transmission roller, and the pressing roller driving assembly is arranged on the periphery of the upper filament drawing transmission roller; the pressing roller is located at the upper end of the upper wire drawing transmission roller and can make contact with the protofilaments so as to apply pressure to the protofilaments on the upper wire drawing transmission roller, and the pressing roller driving assembly can drive the pressing roller to apply different pressures to the upper wire drawing transmission roller according to different specifications of the protofilaments and the number of spinning positions. It is guaranteed that the precursor reaches the target oiling rate, and the oiling rate is uniform. According to the invention, the problems that the pressure on multi-spinning-position tows is not uniform, the oiling cannot reach a target value due to overlarge pressure of the compression roller, or the adjustable range of the oiling rate of a multi-specification engineering preparation production line is small in an existing compression roller control mode can be solved.

The utility model relates to a kind of safety protection structure of grinding machine, including the protective cover being set on workbench, grinding head is equipped in protective cover, grinding head is driven by grinding head driving device, operating door and safety lock are equipped on protective cover, safety lock includes controller, first lock body is installed on protective cover, second lock body is installed on operating door, locking piece for locking;The controller is electrically connected with grinding head driving device, for receiving the start-stop machine signal of grinding head driving device;Locking piece has the locking state of the mutual locking of first lock body and second lock body, and, locking piece has the unlocking state of the relative displacement of first lock body and second lock body;The controller is electrically connected with the locking piece, for controlling the action of locking piece, realize the switching between locking state and unlocking state.Safety lock identifies the start-stop signal of driving device by controller, grinding head starts, safety lock maintains locking state, operating door cannot be opened relative to protective cover, ensure worker operation safety.

The utility model relates to the technical field of heat conduction performance test, disclose a device for testing silicon grease thermal resistance, including base, base outer wall fixedly connected with support plate, base outer wall fixedly connected with support wheel, the extrusion subassembly that is provided with in base top, the extrusion subassembly includes cylinder, cylinder sets up in base top, support plate outer wall fixedly connected with slide post, slide post outer wall slidingly connected with connecting plate no.

The utility model provides a kind of for special-shaped vacuum bag of special-shaped mould, the special-shaped mould includes the mould cavity of trapezoidal cross section;The special-shaped vacuum bag is set on the mould cavity and seals the mould cavity;The cross-sectional shape of the special-shaped vacuum bag includes the main body structure of convex letter shape, and the main body structure includes sequentially arranged from top to bottom center protruding portion, lateral recess portion and base portion.The special-shaped vacuum bag provided by the utility model can meet the requirement of air tightness and vacuum keeping when applied to special-shaped mould, ensure the forming quality of composite material, avoid bubble, void and other problems.

This utility model relates to the field of production line material stacking technology and discloses a production line material stacking positioning card. The upper end of the base is fixedly installed with a surrounding plate. The two sides of the surrounding plate are symmetrically provided with storage slots. The bottom of the two storage slots is fixedly installed with two connecting seats. The upper end of the two connecting seats is provided with a groove. By setting a lifting mechanism composed of a bidirectional adjusting screw, a movable block and a diamond-shaped folding plate, when the handle is turned to drive the bidirectional adjusting screw to rotate, the reverse threads at both ends drive the movable block to move towards or away from each other, causing the folding plate to rotate around the shaft as the fulcrum. The horizontal displacement of the movable block is efficiently converted into the vertical lifting of the connecting seat, realizing precise adjustment of the lower pressure plate height. Because of the action inside the storage slot, the folding plate can be completely stored in the storage slot when folding, greatly reducing the axial space occupation in the non-working state and solving the installation and operation limitations in a space-constrained environment.

The invention discloses a drip irrigation tail end filter with a pressure adjusting function and an operation process of the drip irrigation tail end filter. The drip irrigation tail end filter comprises a shell, an end cover, a lamination filter set located in the shell, a flow guide assembly surrounding the outer side of the lamination filter set and a cleaning assembly located in the middle of the lamination filter set. A water outlet is formed in the top of the shell, a drain outlet is formed in the bottom of the shell, the bottom is communicated with a base, a screen sleeve is arranged in the middle of the base, and a water inlet is formed in the base; water flow entering the tail-end filter rises upwards in a spiral shape, the spiral water flow is uniformly dispersed on the laminated filter group through the flow guide assembly to be filtered, accumulation of impurities on the laminated filter group is effectively avoided, the service life of the laminated filter group is prolonged, and meanwhile, the cleaning assembly is matched to filter the water flow while the water flow is filtered, so that the service life of the laminated filter group is prolonged. The water inlet amount and the water outlet amount can be automatically controlled according to the pressure in the tail end filter, the stability of the pressure in the tail end filter is guaranteed while efficient filtering is achieved, and the stability of the water outlet amount is improved.

The invention discloses an automatic decontamination device and method for a steam generator, and the device comprises a pressurization mechanism which is used for guaranteeing the sealing performance of the interior of the steam generator, a liquid discharge mechanism which is used for discharging the waste liquid after decontamination and cleaning out of the steam generator, and a spraying mechanism which is used for spraying a decontaminant to the inner surface of the steam generator. The spraying mechanism comprises a multi-path pesticide supply mechanism, a decontamination mechanical arm and a decontamination hose fixed to the decontamination mechanical arm, an outlet of the decontamination hose is connected to a spray head, the decontamination mechanical arm is composed of a mechanical arm fixed section, a rotary link, a mechanical arm movable section, a rotary connecting rod, the spray head and the decontamination hose, the mechanical arm movable section can rotate by 360 degrees, and the spray head is connected with the rotary connecting rod. By combining the mechanical arm with the space capable of rotating by 360 degrees and the spray head, the foam detergent is sprayed to the water chamber on the lower portion of the steam generator and other surfaces needing to be decontaminated, then clean water is used for flushing the foam detergent thoroughly, waste liquid is discharged into the waste liquid box for treatment, the method is simple, the decontamination effect is good, and the decontamination efficiency is improved.

The utility model relates to a gravity blanket which comprises a blanket body, the blanket body is formed by weaving thick threads, the thick threads comprise a flexible net-shaped body, the flexible net-shaped body extends in the axial direction of the thick threads, and ventilation net holes are formed in the flexible net-shaped body. Due to the fact that the thick lines are heavy, additional weighting materials do not need to be adopted, the problem of uneven pressure is avoided, the outer surfaces of the thick lines are the flexible net-shaped bodies, the gravity blanket has the advantage of being soft and good in air permeability, and the problems that an existing gravity blanket is poor in air permeability, uneven in pressure and difficult to bend are solved.

The utility model relates to the field of coffee beverage making appliances, and discloses a coffee powder pressing device with a balancing constant force structure, which comprises a main body, a first knob is fixedly connected to the top end of the main body, the first knob is connected with a moving plate through an extrusion assembly, and a rotating plate is fixedly connected to the bottom end of the moving plate. An inner gear ring is fixedly connected to the inner wall of the main body, a first gear is connected to the inner side of the inner gear ring in a meshed mode, the outer wall of the first gear is rotationally connected to the inner wall of the main body, and the first gear is connected with a rotating plate through a transmission assembly. According to the coffee machine, coffee powder in the powder bowl is compacted by pressing the moving plate and the rotating plate downwards, compared with manual powder pressing, the mode can avoid uneven pressure caused by human factors, it is guaranteed that the powder pressing force is the same every time, the consistency and stability of coffee extraction can be improved, the device further has the powder distribution function, and therefore the coffee machine is convenient to use. And additional powder distribution tools are reduced, and the application range of the device is widened.

The utility model discloses a rewinding machine relates to the field of steel wire net processing, include: raw material frame and rewinding frame, the raw material frame top swing is provided with raw material roll, the raw material roll is used for winding the uncompacted steel wire net, the rewinding frame top swing is installed with rewinding roll, the rewinding roll is used for winding steel wire net, the rewinding roll one side is provided with the recess, the recess is used for fixing steel wire net, this kind of rewinding machine, through setting up bilateral symmetry's auxiliary shaft compaction mechanism, realized the dynamic pressurization of steel wire roll layer by layer, the inside symmetrical arrangement of movable frame no.

This utility model relates to the field of oil cooler testing, specifically an oil cooler airtightness testing device, including a working box. Airbag 1 and Airbag 2 are fixedly connected to the inner wall of the working box. The working box is fixedly installed on the top of a working plate, and an air pump is fixedly installed on the top of the working plate. The air outlet of the air pump is fixedly connected to and connected to a distribution pipe, which injects air into the inflation component and the testing component. This utility model uses inflated airbags 1 and 2 for clamping. Compared with traditional clamping plates with rubber pads, airbags 1 and 2 can conform to the uneven outer wall of the cooler, avoiding uneven local pressure and reducing cooler damage. Pressure sensors 1 and 2 monitor the pressure of airbags 1 and 2 in real time, and, in conjunction with a PLC controller, automatically control the opening and closing of electric valves 1 and 2 to ensure precise clamping force and prevent excessively loose or tight clamping.

The invention discloses a cable connector and a wiring method, and the cable connector comprises a main body housing which is provided with a main wire hole and a plurality of secondary wire holes surrounding the main wire hole, and a communication cavity is formed in the main body housing; the conduction sheet is fixed on the bottom wall of the cavity; the pressing ring is arranged in the cavity and is connected with the linkage part extending to the outside; the locking screw sleeve is rotatably arranged at one end of the main body shell in a sleeving manner and is provided with a thread part, a connecting part connected with the linkage part and an extending hole; and the locking sleeve is arranged in the locking screw sleeve, and the outer wall of the locking sleeve and the inner wall of the extending hole are provided with inclined plane structures which are matched with each other. When the locking screw sleeve is rotated, the linkage part drives the pressing ring to move downwards to press the secondary cable core, and the inclined surface structure enables the locking sleeve to radially contract to tightly hold the main cable, so that mechanical locking of the main cable and electrical connection of a plurality of secondary cables are synchronously completed through single operation, the wiring efficiency is improved, and the connection consistency is ensured.

The utility model discloses a battery test fixture, which comprises an upper pressing part, a lower pressing part and a fastening connecting piece, the upper pressing part is connected and fastened with the lower pressing part through the fastening connecting piece, a middle clamping plate is arranged between the upper pressing part and the lower pressing part, and one end, facing the upper pressing part, of the middle clamping plate is connected with the upper pressing part through a spherical support column. According to the utility model, through the arrangement of the middle clamping plate and the spherical supporting column, the upper pressing part transmits pressure to the middle plate through the spherical supporting column, so that the problem that the pressure on the battery is not uniform due to the fact that the upper pressing part and the lower pressing part are not completely horizontal can be avoided, and meanwhile, the spherical supporting column can relatively rotate before pressing; and the pressure uniformity of the upper pressing part on the battery can be ensured.

The utility model provides an improved structure of aviation tire fabric calender belongs to calender technical field, the improved structure of aviation tire fabric calender includes two mounting plates, and the one end of one mounting plate is provided with the movable slot, screw rod, screw rod rotation is connected between the upper and lower inner wall of movable slot, screw rod nut, screw rod nut is connected on the circumference surface of screw rod with thread, fixed calender roll, fixed calender roll rotation is connected with the end of two mounting plates close to each other, and the micron level displacement of mobile calender roll is realized through screw rod-nut pair cooperation limiting groove, ensures the evenness of double roll gap, avoids uneven pressure of fabric, especially applicable to the ultra -thin high -strength fabric of aviation tire, and the pulling mechanism of independent electric guide rail drive can be active displacement after roll distance adjustment, real -time compensation fabric path length change, keeps constant tension, eliminates the risk of wrinkle.

The present invention relates to the field of transformer testing technology, a transformer oil static pressure test device, including a shell, a cone bucket is provided at the bottom of the inner cavity of the shell, an oil drain pipe extending to the outside of the bottom of the shell is provided at the central bottom end of the cone bucket, a vertical guide plate is provided above the cone bucket, the outer end of the guide plate is fixedly connected to the inner wall of the shell, a horizontal lifting plate is movably sleeved on the guide plate, the outer periphery of the lifting plate is fitted with the inner wall of the shell, an airbag is connected to the lifting plate, the bottom end of the airbag is fixedly connected to the top of the lifting plate, the top of the airbag is connected to the air supply pipe located outside the shell, the volume of the airbag can swell after high-pressure gas is injected into the airbag, forming a downward driving structure of the lifting plate, and the downward lifting plate forms a pressure structure for the transformer oil in the inner cavity to be output along the oil drain pipe. The present invention is conducive to solving the problems that the airbag structure is simple in some existing transformer oil static pressure devices, the expansion and deformation after gas filling is uncontrollable, and the oil drain hole is easily blocked in advance, resulting in work failure.