54results about How to "Molding stability" patented technology

The invention discloses a friction stir welding stirring head capable of improving the flowing efficiency of base metal, which is characterized by comprising a friction stir welding stirring head body, the friction stir welding stirring head body comprises a clamping part, one end of the clamping part is provided with a spiral stirring needle, and the other end of the clamping part is provided with a stirring rod; the spiral stirring needle spirally shrinks towards the end part of the stirring needle, and a shaft shoulder part is arranged outside the radial peripheral surface of the spiral stirring needle; the shaft shoulder part is a concave surface inner asymptote groove shaft shoulder part; the spiral stirring needle is of a conical thread equally-divided three-section-shaped structure. And the end part of the spiral stirring needle is provided with a convex end head structure. According to the design of the end part of the stirring needle, the overall flowability of workpiece base metal can be effectively improved, a smaller crystal grain structure is generated, the forming is more stable, and the quality of a welding seam is enhanced.

This invention discloses a hard mold casting device for steel casting production, specifically relating to the field of hard mold casting technology. The device includes: a base frame; a lower mold and an upper mold, arranged sequentially from bottom to top above the base frame; multiple guide rods fixedly connected to the upper surface of the base frame, each guide rod penetrating the surfaces of the lower and upper molds to guide their closing and opening; a lower mold sleeved inside the lower mold; and an upper mold sleeved inside the upper mold. This invention utilizes staggered square tubes and nut joints to divert and deliver coolant, which is then evenly sprayed through atomizing holes in the water pipe to improve mold cooling efficiency and avoid affecting casting quality. An electric cylinder pushes a pusher and multiple sets of supports to lift the lower mold, achieving smooth demolding of the casting. The upper mold can be quickly disassembled and assembled using pins, springs, and through-hole locking mechanisms on the positioning plate, shortening mold change time and improving production flexibility.

The invention relates to the technical field of inductor production equipment, in particular to an inductor hot-pressing production line, which is characterized in that an implanting module, a powder filling module, a preheating module, a multi-station hot-pressing module, a cooling module and a demolding module are sequentially arranged on a machine table according to working procedures; each module is provided with a carrying structure, a material stacking detection mechanism and an NG mold processing mechanism are further arranged between the implanting module and the powder filling module, a transferring mechanism is further arranged between the implanting module and the powder filling module, and a mold filled with powder is transferred into the preheating module; the machine table is further provided with a mold cleaning mechanism, and a moving module is arranged between the stacked material detecting mechanism and the NG processing mechanism. A plurality of functional modules are integrated to automatically complete inductance hot pressing, the full-automatic production process from semi-finished product workpiece loading to demolding can be achieved, manual operation is greatly reduced, and the production efficiency is effectively improved; and the mold can be transferred among the modules and circularly flows back behind the modules.

The utility model discloses a slider demolding device, including the forming seat, the one end of forming seat is provided with the slider seat, the slider seat is provided with the demolding mechanism on the slope, the demolding mechanism includes the coaxial setting drive assembly and the insert group, the drive assembly includes at least the slider of placing in the slider seat, the inclined guide pillar of the slider and the slider seat, the insert group includes the first insert of with slider fixed connection and the second insert of setting in the first insert, the end profile of first insert is equivalent with the outer profile of injection molding part. The utility model has the beneficial effects of: through first insert and second insert respectively to the gap and the outer wall of abutting on injection molding part, using slider to drive first insert and / or second insert to remove to realize the demolding of two parts, effectively avoid the warping or deformation of injection molding part in the demolding process, guarantee the demolding quality.

This utility model discloses a pet supplies injection mold with anti-overflow design. This utility model relates to the field of plastic processing and molding technology. The utility model includes: a support frame, the inner wall of which is fixedly connected to an anti-overflow device; by combining the anti-overflow device and the demolding device, and through precise cylinder control, the pressure of the molding die can be adjusted in real time according to the characteristics of different pet supplies raw materials and the requirements of the injection molding process, effectively preventing molten material from overflowing into the mold gap. Simultaneously, the overflow port on the inner wall of the molding die can collect any small amount of overflowing material, preventing overflow from contaminating the inside of the mold. Combined with the guide structure of the cross and limiting groove, the molding die maintains stable operation during the extrusion of raw materials, reducing component wear caused by shaking or deviation. The demolding device adopts a combination design of a mold body, a bidirectional screw, and a sliding rod. By rotating the bidirectional screw, the mold body can slide symmetrically along the dovetail groove on the inner wall of the support frame, achieving rapid and stable demolding.

This utility model relates to the field of molding die technology and discloses a precision positioning secondary molding die, including a base. A first positioning mechanism is provided on the top of the base, and a second positioning mechanism is provided on the rear side of the base. Limiting posts are fixedly connected to the left and right sides of the top of the base. A lower die is inserted into the top of the base, and connecting blocks are fixedly connected to the left and right sides of the lower die. Pins are inserted into the connecting blocks. In use, when the rectangular steel plate after punching needs to be further processed for secondary molding through the first positioning mechanism, the first hydraulic cylinder drives the moving table and the upper die to move down precisely. The limiting sleeve slides along the limiting post and cooperates with the limiting shaft to limit the connection between the moving table and the upper die, ensuring that the alignment error between the upper die and the lower die is minimal. The second hydraulic cylinder pushes the limiting plate to contact the workpiece on the top of the lower die, limiting the displacement of the workpiece from the front and back direction. The cooperation of the pins and the fixed shaft securely installs the lower die on the base.

The application relates to the auxiliary technology field of asphalt sample production and discloses a demolding machine, which comprises a material ejection mechanism for ejecting samples to separate the samples from molds; the material ejection mechanism comprises a fixed part, a driving part and a material ejection part, the fixed end of the driving part is connected with the fixed part, and the driving end of the driving part is connected with the material ejection part; the driving part comprises a plurality of first air cylinders and a plurality of second air cylinders, the plurality of first air cylinders are arranged in a ring array, the plurality of second air cylinders are arranged in a ring array, and the second air cylinders are arranged between the central axis of the fixed part and the first air cylinders; the material ejection part comprises a first material ejection block and a second material ejection block, the first material ejection block is arranged around the edge of the second material ejection block, the first material ejection block is drivingly connected with the first air cylinders, and the second material ejection block is drivingly connected with the second air cylinders. The application realizes stable demolding of samples with different sizes through the switchable double-cylinder driving structure, effectively solves the problem of uneven stress, and significantly improves the finished product rate and production efficiency.

This invention discloses a waste recycling device for FIBC (Flexible Intermediate Bulk Container) processing, relating to the field of comprehensive environmental utilization of solid waste. The device includes a hollow frame, a hydraulic rod mounted on the hollow frame, and a pressure plate mounted on the hydraulic rod. The equipment continuously feeds FIBC waste into a flattening machine. The pressure plate is automatically triggered by the weight of the waste, achieving a complete automatic cycle of feeding, weighting, triggering, compaction, resetting, and locking, thus improving waste recycling efficiency. When not in operation, the pressure plate is rigidly limited by a limiting mechanism, preventing hydraulic system depressurization or accidental drop. This ensures uniform compaction density of the plastic waste, reducing the mixing and adhesion of plastic and impurities due to insufficient compaction, facilitating subsequent separation of plastic from other components. It also protects core components such as the hydraulic rod and pressure plate, extending equipment lifespan, reducing maintenance costs, and contributing to the resource-based recycling of plastic waste and comprehensive utilization of solid waste.

The invention relates to the technical field of stamping, and discloses a television backboard stamping forming device which comprises a stamping device, an upper die base and a lower die base are arranged in the stamping device, a main die core is fixedly arranged in the center of the top end of the lower die base, and a floating platform is arranged above the lower die base. And a limiting platform is arranged at the position, corresponding to the floating platform, of the bottom end of the upper die base, a plurality of sets of driving blocks are fixed to the bottom end of the upper die base, wedge-shaped driving mechanisms matched with the driving blocks are arranged in the lower die base, the top ends of clamping columns are elastically connected with the floating platform through auxiliary rods, and the auxiliary rods are sleeved with second springs. Through auxiliary supporting of the floating platform, feeding vibration can be effectively weakened, then the wedge-shaped mechanism is in linkage for receding, the cracking risk is reduced, then the floating platform makes contact with ejection, ejection traces are effectively reduced, vacuum breaking is facilitated, full-process pure mechanical linkage is achieved, errors are remarkably reduced, and the control process is simplified.

This invention relates to the field of vacuum forming machine technology, and proposes a negative pressure integrated vacuum forming machine and method. The machine includes a support platform, a mounting frame fixedly connected to the top of the support platform, a material feeding frame on the inner side of the mounting frame, a lifting mechanism on the inner side of the mounting frame, an infrared heater fixedly connected to the top of the inner side of the mounting frame, and a vacuum forming mechanism below the material feeding frame. The vacuum forming mechanism includes a mold, with an air cavity at the bottom of the inner side of the mold. A three-way pipe communicating with the interior of the air cavity is fixedly connected to the bottom of the mold. One end of the three-way pipe is fixedly connected to an air outlet pipe, and the other end is fixedly connected to an air inlet pipe. A dual-axis motor is fixedly installed inside the support platform. An air extraction component is provided at the outlet end of the air outlet pipe, and an air inlet component is provided at the inlet end of the air inlet pipe. This invention effectively solves the technical defects of traditional vacuum forming machines through uniform negative pressure adsorption in the air cavity, rapid cooling in the annular cavity, non-destructive positive pressure demolding, and integrated power transmission.

The utility model relates to stamping die technical field, concretely relates to air conditioner front cover plate stamping die with guide angle forming function, including lower die plate and upper die plate, the upper surface of lower die plate installs the guide angle female die, is provided with the forming chamber in the guide angle female die, is provided with the lower recess on the bottom wall of forming chamber, the bottom wall central position department of lower recess is provided with the cylindrical hole of the lower die plate, the lower die plate below is provided with first air cylinder, the telescopic axle end of first air cylinder detachably installs the ejection plate, and the ejection plate is slidably connected between the lower recess, the bottom of upper die plate installs the guide angle male die, the bottom surface central position department of guide angle male die is provided with annular groove, the top wall central position department of annular groove is provided with the inner slide of the upper die plate, the top of upper die plate is fixedly installed with third air cylinder, and the telescopic axle end of third air cylinder detachably installs the ejection disc. The utility model makes the blank finish guide angle processing in one stamping, shortens production cycle, and is convenient to use.

This invention relates to the field of auxiliary positioning technology for construction molds, and discloses a centrifugal forming anti-deviation positioning device for pipe piles. The device includes a base, a support assembly on the upper surface of the base, a hydraulic cylinder fixedly connected inside the support assembly, a push plate fixedly mounted at the output end of the hydraulic cylinder, a limit cap fixedly connected to the top of a connecting column, a limit plate fixedly connected to the bottom of the connecting column, rollers installed on the inner wall of the limit plate, and a spring mounted on the outer wall of the connecting column. One end of the spring is fixedly connected to the lower surface of the push plate, and the other end is fixedly connected to the outer wall of the limit plate. In this invention, by activating the hydraulic cylinder to push the push plate downwards, the spring is compressed during the movement of the push plate, which limits the vertical displacement of the roller and stabilizes the rotation state of the roller. This prevents the roller from jumping up and down due to centrifugal force during high-speed rotation, ensuring stable centrifugal forming of the pipe pile and improving the forming quality.

This utility model relates to the field of support tube processing technology, specifically a heat-forming tooling for support tubes. It includes a support frame, a rotating disk rotatably connected to the side of the support frame, a fixed disk on the side of the rotating disk, and a heating and softening component on the side of the fixed disk. A forming component is also provided on the side of the fixed disk. The heating and softening component includes a pair of heating tubes slidably connected to the side of the fixed disk, the heating tubes being arranged in a semi-arc shape, and the pair of heating tubes being symmetrically arranged. In this utility model, the support tube is first heated and softened by the heating and softening component, and then the heating and softening component is removed. The forming component facilitates the shaping of the heated and softened support tube without requiring repositioning, reducing heat loss and making the shaping more stable. Furthermore, the inclusion of an air pump, air guide pipe, ventilation pipe, and high-pressure nozzle facilitates cooling of the support tube, accelerating the shaping process.

The present invention provides a manufacturing device and a manufacturing method for a double-layer soft-package hard enamel product, which belongs to the field of medical education equipment and solves the problems that the existing enamel products are all single-layer products and have low manufacturing efficiency. The manufacturing device includes a base and two elevators. A rotating mechanism and an injection mechanism are provided at the upper end of the base. A lifting plate is provided between the two elevators. A rotating mechanism is provided between the lifting plate and the injection mechanism. A demolding mechanism, a heating box, a spray cooling box and a blowing cooling box are provided in sequence between the lifting plate and the base. Four hinged molds are provided on the rotating mechanism. The manufacturing method includes the following steps: raw material proportioning; primary loading; primary injection, secondary loading; heating and firing; primary cooling; secondary cooling; secondary feeding, re-loading; firing and cooling, product demolding; mold closing, and re-preparation. The present invention can efficiently perform injection, one-layer firing, primary cooling, secondary cooling, two-layer firing and finished product demolding in an assembly line.

The invention discloses cheese capable of being shaped by spraying as well as a preparation method and application of the cheese capable of being shaped by spraying. The raw materials comprise 7%-10% of casein powder, 2%-6% of skimmed milk powder, 25%-30% of anhydrous cream, 0.5%-1.5% of pea protein powder, 0.1%-0.3% of whey protein powder, 0.3%-0.9% of an emulsifying agent, 0.3%-0.5% of milk mineral salt, 0.5%-0.9% of hydroxy propyl distarch phosphate, 5%-15% of citrus fibers, 0.5%-3% of sodium carboxymethyl cellulose, 0.3%-1.1% of colloid, 0.03%-0.1% of a fermentation bacterium agent and the balance of water. The manufactured cheese product capable of being shaped by spraying is uniform and fine in taste and light and fluffy in texture, and when the cheese product is sprayed above tea drinks, the phenomena of collapse, deformation and mutual dissolution of the cheese product and the tea drinks cannot occur above the tea drinks within 20 min. When the cheese tea is eaten, rich cheese fragrance and fresh tea fragrance can be tasted at the same time, the flavor is progressive layer by layer, and the matching is more palatable.

The utility model relates to the technical field of cement electric pole production, and discloses a clamping device for cement electric pole demoulding, which comprises a base, a plurality of groups of supporting plates are fixedly arranged above the base, a sliding chute is arranged on the base, a motor is fixedly arranged on the outer wall of the base, and a plurality of groups of supporting plates are fixedly arranged on the base. The clamping device comprises a base, a sliding groove is formed in the base, a clamping mechanism for clamping a concrete pole is arranged on the base, the clamping mechanism comprises a sliding plate, the sliding plate is slidably connected to the inner wall of the sliding groove, and an adjusting plate is slidably connected to the inner wall of the sliding plate. According to the concrete pole demolding device, the two ends of a conical concrete pole can be clamped, the concrete pole is more stable during demolding, the concrete poles with different lengths can be clamped through rotation of the two-way lead screw in cooperation with the two sets of sliding plates, and the overall practicability of the device is improved.

This utility model discloses an electronically controlled clutch mechanism and a square baler. The pre-compression system of the square baler includes a frame, a drive shaft mounted on the frame, and a feeding mechanism mounted on the drive shaft. The frame has a pre-compression channel. The drive shaft is used to drive the feeding mechanism to push the straw in the pre-compression channel. The electronically controlled clutch mechanism includes: a pressure feedback mechanism mounted on the pre-compression channel for detecting the accumulation pressure of the straw in the pre-compression channel; a clutch assembly mounted on the feeding mechanism for controlling the transmission between the feeding mechanism and the drive shaft under external drive; a stop mechanism for engaging or disengaging from the clutch assembly under external drive; and a pushing mechanism for pushing the stop mechanism to operate when the pressure value fed back by the pressure feedback mechanism reaches a set value.

The utility model discloses a refrigerator cover plate stripping mechanism, including upper mould and lower mould, the inside of lower mould is provided with the cavity for refrigerator cover plate forming, the inside of lower mould is provided with stripping mechanism, and stripping mechanism includes ejection assembly, push assembly and adjustable linkage assembly, ejection assembly includes bottom plate, and the inside of bottom plate and lower mould is connected with sliding, and the bottom of cavity inner wall is provided with a plurality of recess, and the top of lower mould inner wall is provided with a plurality of with recess position corresponding round groove, the utility model relates to refrigerator parts production technical field. When the refrigerator cover plate stripping mechanism is to the stripping of refrigerator cover plate, through the process of stripping mechanism and upper mould mold opening linkage, thereby completes the stripping process to the refrigerator cover plate in the process of mold opening, improves the production efficiency of refrigerator cover plate, and through the setting of damper makes the stripping process can be stable, avoids the emergence of the situation of excessive jacking force, improves the practicality when the device uses.

This utility model relates to the field of mold technology and discloses a mold that changes the parting line and ejection angle to solve the problem of product damage during ejection. It includes a front mold and a rear mold, with a cavity formed between them for molding the product. The parting line between the front and rear molds extends downwards to the bottom of one side of the rear mold, changing the original complete contact between the front and rear molds to a large-angle rubbing contact between the front mold and the rear mold. The top of the front mold and the bottom of the moving mold core of the rear mold are contacted. The ejector pins of the front mold, aligned with the easily damaged product position, are flat ejector pins; the ejector pins of the rear mold, also aligned with the easily damaged product position, are flat ejector pins. The parting line is located at the bottom of the rear mold, and the large-angle rubbing design of the front mold solves the problems of uneven force distribution at the edge of the square hole and chamfering during ejection caused by the traditional parting line being in the center. This ensures uniform force distribution on the product during ejection and reduces skewing. The flat ejector pins increase the contact area with the product, reducing unit pressure, and changing the ejection damage marks from "dot-like depressions" to "shallow linear marks" or even no marks, thus avoiding ejection damage.

This invention discloses a large-size surface frame injection mold for cleaning appliances, comprising a fixed mold plate, a moving mold plate, two drive rocker arms, two ejector linkages, two ejector sliders, multiple cooling zones, an ejector plate, an ejector cylinder, and levers. The drive rocker arms are linked to the moving mold plate during injection molding. During mold closing, the ejector linkages drive the ejector sliders to push the melt from the cavity edges towards the center, improving filling at the far end. Multiple cooling zones are arranged along the length of the cavity, each equipped with an independent cooling water channel, flow regulating valve, and temperature sensor, forming an orderly temperature gradient to guide the orderly contraction of the melt. The levers, in conjunction with multiple sets of elastic elements, ensure that the central ejector pin extends before the edge ejector pins, achieving staged demolding. This invention systematically solves the problems of insufficient filling, cooling deformation, demolding damage, and shrinkage deviation in the injection molding of large-size surface frames. It features a simple and reliable structure and low manufacturing cost.

The utility model discloses a four-head riveting machine for an automobile seat framework, and relates to the technical field of automobile part manufacturing equipment. The device comprises a machining table, the machining table is obliquely arranged, a mounting plate is arranged on the machining table, a machining unit is arranged on the mounting plate, the machining unit comprises a clamping mechanism, the clamping mechanism is correspondingly provided with a riveting mechanism, a sliding plate is further arranged between the machining table and the mounting plate, and the sliding plate is connected with the mounting plate. The air cylinder pulls the sliding plate to enable the workpiece to be smoothly separated from the clamping mechanism. The utility model has the beneficial effects that the inclined machining table design is adopted, so that the operation height of an operator better accords with ergonomics, and the fatigue of long-time operation is effectively relieved; the automatic demolding mechanism of the sliding plate is driven by the air cylinder, automatic separation of the workpiece and the clamping system after riveting is completed is achieved, manual knocking demolding is not needed, the risk of surface scratching caused by manual knocking demolding is also avoided, and the demolding efficiency is improved.

The utility model relates to the technical field of automobile gear box processing, in particular to an automobile gear box die with a rapid cooling function, which comprises a base, an upper die is fixedly erected above the base through a support, a lower die is arranged below the upper die, the outer surface of the lower die is aligned with the inner surface of the upper die, and the lower die is arranged on the base. The lower surface of the upper mold is open, and the upper surface of the lower mold is open. According to the automobile gearbox mold with the rapid cooling function, the upper mold body and the mold core are fixedly installed, the lower mold body and the mold cavity move in the vertical direction through the first electric push rod, and therefore the mold cavity and the mold core are clamped and matched for mold closing, the mold cavity is of a hollow interlayer structure, and cooling fins are fixed to the outer surface of the mold cavity in an embedded mode; and the other ends of the cooling fins are inserted into the hollow lower mold and are matched with the circular ventilation holes in the outer surface of the lower mold, so that heat in the mold cavity can be quickly transferred outwards, and the device is cooled.

The invention provides a method for preparing rutile type titanium dioxide, which comprises the following steps: S10, adding metatitanic acid and a first rutile type titanium dioxide primary product into water, and pulping to obtain a pulped material; s20, adding a salt treatment agent into the pulped material to obtain mixed slurry; and S30, introducing the mixed slurry into a microwave oven, and calcining to obtain a second rutile type titanium dioxide primary product. The method has the advantages of being simple in technological process, high in technological efficiency, capable of saving energy, environmentally friendly and the like, has the large-scale condition and is clean energy. After future popularization and application, the efficiency of producing titanium dioxide by a sulfuric acid method can be improved, the greenhouse effect is reduced, and the purpose of green production is achieved.

This utility model relates to the field of building technology and discloses a modular thin-wall structure for houses, including a foundation, a side wall fixedly connected to the top of the foundation, multiple thin wall panels installed on the top of the foundation, an installation mechanism and a support mechanism provided on the outside of the thin wall panels, the installation mechanism including multiple slots, the slots being formed on the outside of the thin wall panels, multiple side grooves on the outside of the thin wall panels, multiple connecting holes on the inside of the thin wall panels, and a casting cavity formed on the adjacent side of two thin wall panels, with a connecting plate threadedly connected to the outside of the slots. In this utility model, the thin wall panels on both sides are spliced ​​to form a casting cavity through the threaded connection structure between the slots on the outside of the thin wall panels and the connecting plate, thereby achieving efficient and stable forming of the thin wall structure, avoiding the use of traditional steel mesh, reducing construction difficulty and cost, and improving construction efficiency.

The utility model discloses a fixing structure for a heating wire of a toilet seat. The fixing structure comprises an upper cover, a lower cover and a heating assembly, the heating assembly comprises a fixing frame and a heating wire, a wire groove is formed in the fixing frame, the heating wire is completely embedded in the wire groove, a plurality of wire clamping assemblies are arranged at a groove opening of the wire groove, and the wire clamping assemblies are used for limiting the heating wire pressed into the wire groove to rebound out of the wire groove; the upper cover is formed through compression molding, the heating assembly is embedded between the upper cover and the lower cover, and the lower cover is formed on the upper cover and the heating assembly through secondary compression molding. According to the structure, the design of the wire groove and the wire clamping assembly is adopted, it is ensured that the heating wire is completely embedded in the wire groove, the wire clamping assembly is used for limiting rebounding of the heating wire, the heating wire is firmly fixed in the wire groove, and the embedding mode can prevent the heating wire from being broken by pressing, broken by squeezing or disordered by squeezing in the compression molding process and avoid non-heating or non-uniform heating. In addition, the thickness of the product can be reduced, and the cost of the product is reduced.

The application relates to the technical field of water-permeable brick production, in particular to a water-permeable brick preparation rapid forming equipment, which comprises a rack, a hydraulic machine fixed at the top of the rack, a moving plate fixed at the telescopic end of the hydraulic machine, a sliding arm, a first toothed plate, a first gear, a transmission shaft, a worm, a worm wheel, a connecting block and a beating block. The sliding arm moves downwards, thereby driving the first toothed plate to slide downwards. The first toothed plate can drive the first gear meshing with the first toothed plate to rotate, thereby driving the transmission shaft to rotate, and further driving the worm to rotate. The rotation of the worm can drive the worm wheel to rotate, and the rotation of the worm wheel can drive the connecting block to rotate. The beating block on the connecting block can beat and vibrate the lower die. The forming piece is formed in the process of being pressed by the upper die and the lower die. At this time, the forming piece has certain adhesion to the inner wall of the lower die. The beating and vibrating process can make the forming piece and the lower die complete the pre-demolding operation before the lower die moves downwards for demolding, thereby increasing the stability during the demolding operation, improving the yield of the forming piece, improving the product quality, and avoiding the waste of raw materials caused by the broken forming piece.

The utility model discloses a kind of stacked pressure tool for motor rotor core, including bottom plate, push mechanism and shaping mechanism. Push mechanism is symmetrically arranged at the both sides of bottom plate, and shaping mechanism is arranged between two push mechanisms. Shaping mechanism includes horizontally movable shaping column, rib positioning column and positioning rib, and the accommodation space is enclosed by the shaping column and rib positioning column, for stacking rotor sheet, and positioning rib and rotor sheet notch are embedded to realize initial positioning. Push mechanism drives pressing plate to push shaping column radial motion by air cylinder, and the shaping of rotor sheet outer circle is realized. Positioning strip can be vertically arranged, for straight slot rotor core forming. It can also be arranged at a certain angle with rotor shaft, for slant slot rotor core forming. The utility model has reasonable structure, clamping and positioning are fast, and the scope of application is wide. It can be compatible with the manufacture of straight slot and slant slot rotor core, effectively shorten the development cycle of new stacked pressure tool, reduce the replacement frequency and production cost of stacked pressure tool.

The present invention relates to the field of mold technology, and specifically to an internal threaded plastic gear injection mold, comprising a fixed mold and a movable mold, a rotatable threaded column is arranged in the mold groove of the movable mold, a mold splitting torque output device capable of outputting torque when the mold is split is arranged between the movable mold and the fixed mold, the mold splitting torque output device has a torque output part coaxial with the threaded column, an elastic torque connector is arranged between the torque output part and the threaded column, and the elastic torque connector is used to input flexible torque to the threaded column. The present application can generate torque during mold splitting through the mold splitting torque output device, and transmit it to the threaded column through the elastic torque connector, so that after the mold is completely split, the elastic torque connector can guide the threaded column to rotate, thereby being able to withdraw the plastic gear in the movable mold groove, thereby completing demolding, solving the problem that the existing mold requires auxiliary power when producing an internal threaded plastic gear chamber, thereby resulting in high production costs.

The invention discloses a wear-resistant weather-resistant high-strength flame-retardant multi-layer co-extrusion woven fabric and a preparation method thereof. The woven cloth comprises a polyethylene glycol terephthalate (PET) layer and polyamide (PA) layers arranged on the upper surface and the lower surface of the PET layer, and the mass ratio of the PET layer to the PA layers is (38-42): (58-62). The PET layer comprises PET master batch, PTFE powder and a dispersing agent; the PA layer comprises PA particles, a flame retardant, a bridging agent, PTFE powder, an anti-ultraviolet agent and an antioxidant. The preparation method comprises the following steps: carrying out drying pretreatment on the PET master batch and the PA particles; respectively blending with corresponding auxiliaries to obtain pretreated master batches; melting and co-extruding the two pre-treated master batches at 180-265 DEG C, and cooling and drafting to obtain co-extruded flat filaments; and finally weaving into cloth. The obtained woven cloth has excellent wear resistance, weather resistance, high strength and flame retardance.