40results about "Mould loosening devices" patented technology

The invention relates to the field of casting and provides a sand core automatic demoulding mechanism and a demoulding method for a screw compressor rotor, wherein the sand core automatic demoulding mechanism has an ingenious design, sufficiently utilizes the characteristic of a screw thread on the surface of the rotor to carry out demoulding and has a high production efficiency and a high quality. The invention solves the technical problems that in the prior art, the production efficiency is low, the labor intensity of workers is high, a sand core has a poor quality, the quality of the screw compressor rotor cannot be ensured and the like. The sand core automatic demoulding mechanism comprises a bracket, a left die and a right die, wherein the left die and the right die can relatively slide on the bracket along the horizontal direction; after the left and right dies are abutted, a synthetic sand core cavity is surrounded; a screw compressor rotor core rod is arranged at the middle part of the sand core cavity; and the screw compressor rotor core rod is screwed on the bracket and can be driven by a driving mechanism to rotationally enter and exit the synthetic sand core cavity. In the demoulding process, firstly, resin sand is placed into the sand core cavity to be tamped and the upper surface of the resin sand is scraped by a sand scraper; the resin sand is cured by a heating rod; and then the driving mechanism is started to screw out the screw compressor rotor core rod; and finally, the left and right dies are driven by the cylinder to slide outward to be demoulded.

A tool 100 having a forming surface 102 being formed from a contiguous material 101 and including, within the contiguous material 101 into which the forming surface 102 is operatively resident, a cylinder 150, 170 or other selectively movable member which may be selectively used to remove an object from the tool 100.

The invention provides a floating mold clamping device for a sand-core accompanying support plate. The floating mold clamping device for the sand-core accompanying support plate is used for overturning a pattern drawing machine. The floating mold clamping device for the sand-core accompanying support plate comprises an upper roller way. Pairs of sand-core accompanying support plate locking mechanisms are symmetrically arranged at the left and the right of the front side and the right side of the upper roller way. Pairs of sand-core accompanying support plate floating mechanisms are symmetrically arranged at the left and right of the front side and the rear side of the upper roller way. The sand-core accompanying support plate floating mechanisms are provided with horizontally-arranged drive oil cylinders. The rear ends of the drive oil cylinders are hinged to backseats of oil cylinders on the upper roller way. The front ends of the drive cylinders are hinged to the upper ends of L-shaped floating clamping jaws. The middle portions of the floating clamping jaws are hinged to the clamping jaw supports fixed on the upper roller way. The lower ends of he floating jaws are provided with moving balls. The moving balls make contact with the lower plane of an upper plate of the sand-core accompanying support plate. The floating mold clamping device for the sand-core accompanying support plate has the advantages that the accuracy of die assembly of the sand-core accompanying plate and the sand core can be improved, the quality of the sand core is improved, and the production efficiency is improved.

The invention discloses a closed pneumatic shell vibrating machine which comprises a pneumatic pick, a frame, a cylinder, a case, support legs, a moving door, a pneumatic open-close structure, a clamping mechanism and an auxiliary support mechanism. The pneumatic pick, the frame and the cylinder are disposed in the case. The open front side of the case is provided with the moving door and the pneumatic open-close structure. The clamping mechanism is horizontally disposed below the pneumatic pick. Opposing sides of a moving clamping block and a fixed clamping block are provided with opposing semi-conical openings. The auxiliary support mechanism is vertically disposed below the clamping mechanism and right below the pneumatic pick. When shell vibrating occurs in the closed environment, mass dust produced by shell vibrating is prevented from spreading out, and accordingly operating environment is evidently improved. During shell vibrating, a mould shell is tightly clamped and suspended, so that precision castings are protected from damage caused by rigid extrusion. A flexible support block assists in supporting the mould shell, so that stress condition of the mould shell and the clamping mechanism can be evidently improved during shell vibrating, clamping is reliable and the service life of the clamping mechanism is effectively prolonged.

The invention relates to the technical field of automatic production of sand cores, in particular to cast sand core efficient manufacturing equipment. The cast sand core efficient manufacturing equipment comprises a core shooter, a guide mechanism, a receiving mechanism and an arrangement mechanism; the receiving mechanism comprises a driving car, a bearing module, and a connecting module for driving the bearing module to move up; the arrangement mechanism comprises a moving module, a removing module, a spraying module, and a transmission module for driving the removing module and the sprayingmodule to swing; the removing module and the spraying module are driven to operate by the bearing module; in the transmission connection process of the receiving mechanism and an upper mold, the internal inflation of the removing module and the spraying module is realized; and when the bearing module moves down after deviated from the connecting module, the removing module and the spraying moduleare driven to clean the upper mold and to spray a demolding agent, so that the automatic transfer of molding sand and the automatic and efficient treatment of the upper mold are realized, and the technical problem of low production efficiency caused by lower treatment efficiency of the upper mold in the prior art is solved.

The present invention relates to the technical field of mold ejectors, in particular to a special ejector for motor shell lost foam, which includes a force-bearing part, and several ejectors are evenly distributed around the force-bearing part; The flap on the stressed part; the flap is hingedly connected with the positioning part arranged on the stressed part. The invention has simple structure and strong practicability.

The invention discloses a sand mold frame stripping system. The sand mold frame stripping system comprises a sand box and a rack, wherein a portal frame is mounted at one end of the rack; the portal frame is equipped with a sand box grasping device and a sand mold pushing-out device. The sand mold frame stripping system further comprises a lifting device, which is mounted on the portal frame, of the sand box grasping device, and a movable device for moving the sand box grasping device from front to back along the longitudinal direction of the rack; the rack is further equipped with a horizontal upper rail and a lower rail with an inclined direction; the upper rail comprises a fixed rail and a movable rail; and a movable rail supporting device is mounted on the bottom surface of the movable rail. With the adoption of the sand mold frame stripping system, automatic stripping of a sand box and a sand mold of a casting process is realized, and the stripping labor intensity of workers is alleviated; the stripping working efficiency is improved by 500% and the stripping success rate reaches 100%; and potential safety hazards of causing damages to operators in sand box and sand mold stripping processes are eliminated.

The invention relates to an anti-slip denoising device of a shell vibration machine. The anti-slip denoising device mainly comprises a rack, a vibration hammer and a base; a rubber gasket with convex or concave decorative patterns is arranged on the base; and an anti-slip steel plate with convex or concave decorative patterns is arranged on the rubber gasket. By the anti-slip denoising device, unnecessary troubles and potential safety hazard caused by the reason that a workpiece falls off from the base during the working of the shell vibration machine can be prevented, and noise pollution can be reduced.

The invention discloses a box separation frame for modeling. The box separation frame comprises two sand boxes, wherein one sand box is correspondingly placed on the top side of the other sand box; side lugs are fixedly mounted on two sides of the two sand boxes; hook racks are arranged on two sides of the sand box; hook holes are formed in mutually close sides of the two hook racks; mutually awaysides of the two side lugs respectively extend into the two hook holes; a mounting basket is arranged above the hook racks; two moving blocks are connected to the mounting basket in a sliding manner;a moving hole is formed in one side of each of the two moving blocks. The box separation frame for modeling is simple in design and convenient to operate; after the box separation frame is used, box-staggered rejected products caused by striking the sand boxes with a wooden mallet are reduced, and the casting qualification rate can be increased; manmade box staggering caused by box separation isavoided, so that rejected products caused by the manmade box staggering are reduced; meanwhile, a distance between the two hook racks can be adjusted, and a distance between two push plates can be adjusted; the box separation frame for modeling can adapt to sand boxes of different sizes and side lugs of different sizes, so that the universality of the device is improved, and demands of people aremet.

The invention relates to the technical field of casting production, in particular to a fully-automatic molding sand production system and method for precision casting. The fully-automatic molding sandproduction system comprises a core shooting machine, a guide mechanism, a drop mechanism and an output mechanism, wherein the drop mechanism comprises a transfer car, a material receiving assembly arranged on the transfer car, a transmission assembly which is fixedly arranged on an upper mould of the core shooting machine for driving the material receiving assembly to move upwards, and a clear-upassembly which is used for cleaning the surface of the de-molded upper mould; the output mechanism is used for pushing and outputting molding sand on the drop mechanism; in a moving process of the drop mechanism, positive-pressure gas flow guide-in is performed on the clear-up assembly; a bearing part is driven to move upwards to perform molding sand bearing while the upper mould moves upwards toperform molding sand de-molding, and the transmission assembly clears up the de-molded upper mould and sprays a mould release agent, so that fully-automatic treatment for clearing the upper mould andspraying the mould release agent in the molding sand de-molding process is realized, and therefore, the technical problem that automation degree on molding sand transfer or upper mould treatment in the prior art is solved.

The invention relates to a pattern for casting, in particular to a pattern capable of being lifted and used for a large cylinder body. The pattern comprises a pattern main body, a lifting auxiliary component, a movable material and a counterweight piece; the pattern main body comprises a wood component and a steel body component, and the steel body component comprises a component main body and a plurality of lifting parts; the component main body is arranged in an inner cavity of the wood component, the first end of the lifting part is connected with the component main body, and the second end of the lifting part extends out of the inner cavity of the wood component; the movable material is detachably connected to the upper side of the wood component; the second end is connected with a lifting pad; the lifting auxiliary component is connected to the upper part of the lifting pad and is matched with the lifting pad for lifting; the counterweight piece is arranged on the pattern main body. The pattern can efficiently lift a middle ring of the large cylinder block mold, is easy to operate and low in difficulty, cannot damage a sand mold and the mold easily, and effectively improves the dimensional stability of the casting and prolong the service life of the mold.

The invention discloses an automatic mold drawing machine for a wheel casting mold. The automatic mold drawing machine comprises a mold drawing mechanism and a mold mounting seat, wherein the mold drawing mechanism comprises a base; an oil cylinder is fixed at the center of the base; a top plate is fixed on a piston rod of the oil cylinder; a plurality of adjustment bolts are fixed on the upper end face of the top plate; a plurality of guide columns are inserted into the top plate and are fixed on the base; a plurality of pull hooks are arranged on the outer side of the top plate and are hinged to the base through hinge seats and hinge shafts; the die mounting seat comprises a base plate; a screw rod is fixed on the base plate; a plurality of guide sleeves are fixed on the base plate, and mandrils are inserted into the guide sleeves and correspond to the adjustment bolts on the drawing mechanism. The automatic mold drawing machine is designed for an upper casting mold of a wheel hub, so that manual demolding by a worker is replaced, and the problems of mandril locking and trouble in detaching are solved; therefore, the demolding speed is increased, injury to the mold is reduced, the labor intensity of the worker is alleviated, and the production efficiency is improved.

The invention relates to the field of molds and particularly discloses an automatic demolding device. The automatic demolding device comprises a rack, a mold body, a first separation device and a second separation device. The first separation device of the automatic demolding device is fixedly mounted at the bottom of the rack. The second separation device is fixedly mounted at the top of the rack. The first separation device comprises a threaded rod, a first connecting rod mechanism, a handle, a locating block and a gear, wherein the gear is engaged with the threaded rod. The mold body is detachably connected with the upper end of the threaded rod. The locating block is eccentrically arranged on the side face of the gear. One end of the first connecting rod mechanism is connected with the locating block, and the other end of the first connecting rod mechanism is connected with the handle. The second separation device comprises a separation motor, a transmission shaft and a second connecting rod mechanism. The separation motor is connected with one end of the second connecting rod mechanism, and the other end of the second connecting rod mechanism is connected with one end of the transmission shaft. The other end of the transmission shaft is detachably connected with the upper surface of an upper mold. By means of the automatic demolding device, a pressure-casting mold can be manufactured, and a molding mold can be separated from the mold body automatically.

The invention discloses a rotary die sand core withdrawing device of a screw air compressor. The rotary die sand core withdrawing device comprises a top frame, a pulley, a motor and a support. The pulley is arranged on the upper side of the top frame, the support is fixedly connected with the lower side of the top frame, the motor is arranged on a side of the support, an output shaft is arranged at an end of the motor, a pulling rope is arranged on the lower side of the top frame, a bearing is fixedly connected with the lower side of the pulling rope, an end of the pulling rope is connected with the pulley, a side of the pulley is connected with the output shaft by the pulling rope, a rotary shaft is arranged inside the bearing and is provided with rotary ropes, and a fixture is connected with the lower sides of the rotary ropes. The rotary die sand core withdrawing device has the advantages that the rotary die sand core withdrawing device is simple in structure and novel in design, a die can be driven by the rotary shaft, the bearing and the fixture to rotate, materials can be rotationally discharged from the die under the rotation action of the fixture, the traditional material discharge actions can be replaced, accordingly, the labor cost can be reduced to a great extent, labor and the time can be saved, and the rotary die sand core withdrawing device has an excellent popularization value.

The invention discloses a stirring screw molding process and a stripping back plate. The stripping back plate comprises an upper mold back plate and a lower mold back plate, wherein the tooth-shaped notches of the lower mold back plate and the upper mold back plate are matched with the tooth shapes on two sides of a parting surface of a stirring screw model; the parting surface of the stirring screw model is a plane formed by the tail end of the last tooth shape of the stirring screw model and the axis of the stirring screw; during stripping, the tooth-shaped notch of the upper mold back plate locks the tooth shape of an upper mold model, then pins are inserted in two plug pin holes of the upper mold model respectively, and the upper mold model is screwed out in a screw propelling direction by using the pins to obtain the upper mold of the stirring screw; in the same way, the lower mold of the stirring screw is formed; and finally, the upper and lower molds of the stirring screw are combined to obtain the stirring screw mold. The process avoids the distortion of a sand mold and improves the rate of finished stirring screw sand molds and the rate of finished stirring screw castings, thereby contributing to material conservation, cost reduction and production efficiency improvement.

The invention provides a mold ejector with a mold ejector, comprising an upper flask and a lower flask, more than one ejector is provided outside the lower flask, and an ejector is provided on the ejector . The mold ejector includes a fixed seat for fixing the outside of the sand box, and a lifting rod is provided on the fixed seat, and a cross arm is rotatably connected to the lifting rod. The bottom end of the ejector rod and the ejector plate are detachably provided with more than one tapered structure. The ejector plate is a cube structure. The ejector plate is a cuboid structure. The ejection plate is a disc structure. The two ends of the lower sand box are provided with handles. In the present invention, a mold lifter is provided on the outside of the sand box, and the mold is taken out from the vertical direction by using the mold lifter to avoid damage to the sand mold cavity.

The invention discloses a drawing method of an EPS foam-epoxy resin composite mold applied to sand mold casting. The drawing method comprises the following steps: S1, preparing an epoxy resin plate material with the thickness being 1-5mm; S2, manually splicing EPS foam plates to form a model with the maximum size required by the mold, and integrally feeding the model into an engraving machine forprocessing to obtain a mold sample; S3, cutting, polishing and sanding the epoxy resin plates according to the specific shape and size requirements of the parting surface of the mold sample to obtainepoxy resin reinforcing plates, and attaching the epoxy resin reinforcing plates to the drawing part of the mold by using an adhesive; and S4, during mold drawing, fixing the mold to a molding flat plate through vacuum adsorption equipment, jacking up a sand box and the sand mold through synchronous hydraulic equipment, so as to complete the mold drawing procedure. The epoxy resin reinforcing plate is additionally arranged on the molded surface of the EPS foam mold, mold drawing can be balanced, the stress point can be reinforced, the overall strength of the mold is improved, and the problemsthat the mold is prone to deformation and difficult to draw in the mold process are solved.

The aluminum generator shell mold comprises a hydraulic cylinder, the movable end of the hydraulic cylinder is fixedly connected with a lifting bottom plate, welding supporting legs are installed at the four corners of the top of the lifting bottom plate in a welded mode, and a workbench is connected to the tops of the welding supporting legs in a welded mode. According to the aluminum generator shell mold, the traditional preparation process is simplified, compression molding can be achieved only by placing the middle mold on the top of the mold bottom plate and guiding green sand into the middle mold, the process is simple and rapid, mechanical hydraulic compaction and manual compaction operation are more convenient, and during demolding, the production efficiency is greatly improved. During demolding, the middle mold directly moves upwards, and the green sand and the shell workpiece are directly separated in a vertical linear manner, so that demolding can be performed quickly and conveniently, a mold core cannot be deformed, and the subsequent casting precision can be ensured.