64 results about "Cylinder mold" patented technology

The invention discloses a special-shaped concrete pipe pile adjustable forming die and a concrete pipe pile forming method, and relates to the technical field of concrete pipe piles. The special-shaped concrete pipe pile adjustable forming die comprises a base, symmetrically-distributed fixing bases are fixedly connected to the top of the base, and an adjusting structure is installed at the end, away from the fixing bases, of the top of the base; the adjusting structure comprises a sliding strip connected to the top of the base in a sliding mode. According to the adjustable forming die for the special-shaped concrete pipe pile and the concrete pipe pile forming method, a combined structure of the sliding grooves, the sliding strips and the lead screws is designed at the top of the base, so that the distance between the barrel-shaped dies can be flexibly adjusted, the lead screws are driven by the double-shaft motor to rotate, and the sliding strips are driven to stably slide in the linear direction; by means of the modular splicing design of the first mold and the second mold, additional mold assemblies can be additionally arranged according to actual needs, the length of the barrel-shaped mold is increased, and therefore the machining requirements of concrete pipe piles of different specifications are met.

The utility model relates to the field of two-plate machines, in particular to an electric mold closing device of a two-plate machine. The two-plate machine mold closing device comprises a high-pressure mold locking mechanism, a pressurizing rack screw rod mechanism, a mold moving mechanism, an ejection mechanism, a pull rod nut mechanism and a band-type brake nut mechanism; the gear wedge ring is connected with the fixed wedge ring, the fixed wedge ring is coaxially positioned on the gear wedge ring, the spiral faces are arranged on the two sides of the fixed wedge ring, the rotary wedge ring is arranged on the left side of the fixed wedge ring, the rotary wedge ring is coaxially positioned on the fixed wedge ring and concentrically installed with the pull rod, and the fixed wedge ring is positioned on the movable mold plate through the fixing rod. The gear wedge ring and the rotating wedge ring can rotate around a shaft, a connecting plate and an air cylinder assembly are arranged on the rotating wedge ring, and one end of the air cylinder assembly is connected with an outer ring of the rotating wedge ring. Compared with an existing high-pressure oil cylinder mold closing device, the high-pressure oil cylinder mold closing device is simple in structure, hydraulic oil leakage is avoided, all executing mechanisms are driven by the motor, the response speed and the control precision are higher, and the production efficiency and the stability of injection molding are improved.

The invention relates to the technical field of composite material forming, and provides a fiber composite material barrel forming method which comprises the following steps: laying a fiber layer on the outer side surface of a barrel mold by fiber materials; carrying out pre-curing treatment on the fiber layer; the fiber layer is pulled to move on the outer side face of the barrel mold in the traction direction; laying a second fiber layer; carrying out pre-curing treatment; repeating the previous steps to form all fiber layers; and performing final curing treatment to obtain a barrel finished product. In this way, the multiple fiber layers are sequentially laid in the traction direction, and pre-curing treatment is carried out after laying of each fiber layer is completed. And therefore, the adhesive force with the cylinder mold is reduced, and the cylinder mold can move along the axial direction. The continuous laying of the fiber layer and the continuous forming of the barrel finished product are realized. And meanwhile, the length of a barrel product can be cut according to the design requirement, the length of the barrel product is not limited by the length of a barrel mold, and the flexibility is good. The invention further provides a production line.

The utility model discloses a forming mold for a front door A-pillar joint angle of a vehicle door glass trough, and relates to the technical field of injection molds for automobile parts. Comprising a lower mold and an upper mold, the upper mold is movably arranged at the top of the lower mold, a floating plate is arranged at the top of the lower mold through a nitrogen spring, a first injection molding module and a second injection molding module located on one side of the first injection molding module are arranged at the top of the floating plate, and the first injection molding module and the second injection molding module form a first injection molding cavity. An oil cylinder action of an existing mold rising floating plate is canceled and replaced by a nitrogen spring, after injection molding is completed and equipment opens the mold, the floating plate rapidly rises under the action of the nitrogen spring, a complex oil cylinder mold opening action is simplified, the production efficiency is improved, the mold development cost is reduced, meanwhile, the customer requirements are met, and the product quality is improved. The top strip trough material is controlled by the fourth air cylinder to complete mold insertion, rapid assembly and disassembly are achieved, the labor intensity of workers is relieved to the maximum degree, and the machining efficiency is improved.

The utility model discloses an oil cylinder air tightness testing device which comprises a bottom plate, a sliding groove is formed in one side of the top of the bottom plate in an inward concave mode, adjusting openings are formed in the two sides of the sliding groove respectively, clamping assemblies are arranged in the adjusting openings in a sliding mode, the clamping assemblies are fixedly connected with the middles of the two ends of a placing plate respectively, and the placing plate is arranged in the sliding groove in a sliding mode. Positioning assemblies are movably arranged at one end of the adjusting opening and movably arranged on the two sides of the bottom plate. The other side of the top of the bottom plate is fixedly connected with one end of a supporting column, the other end of the supporting column is fixedly connected with the bottom of one side of a fixing plate, the other side of the fixing plate is slidably sleeved with a movable rod, one end of the movable rod is hinged to a pressing assembly, the pressing assembly is movably arranged at the top of the fixing plate, and the other end of the movable rod is fixedly connected with a connector. A corresponding oil cylinder mold is placed on the containing plate, the oil cylinder is supported by the mold, the mold is limited and fixed through the clamping assembly, then the oil cylinder position fixity is kept, and the containing plate moves in the sliding groove and is pushed to the end of the sliding groove.

The utility model discloses a multi-cavity cylinder die and a robot automatic loading and unloading system used for the multi-cavity cylinder die. The multi-cavity cylinder die comprises a middle sleeve, more than two die cavities are arranged in the middle sleeve, the upper portion of each die cavity is provided with a punch capable of being inserted into the die cavity, the lower portion of each die cavity is provided with a push plate, a gap is formed between the lower portion of each die cavity and the push plate, and the upper portion of each die cavity is provided with a punch. More than one partition plate is arranged in each die cavity, and the partition plates and the die cavities have no connecting points, so that the partition plates slide in the die cavities; according to the automatic robot discharging and loading system, a robot is arranged on one side of a multi-cavity cylinder mold, a piece pushing device is arranged on the other side of the multi-cavity cylinder mold, a hand of the robot is connected with a clamp, the clamp comprises one or more tongs, the piece pushing device comprises a sliding table, the sliding table is connected with a pull rod, the sliding table is provided with a piece pushing motor, and the pull rod is located above a push plate. The problem that the machining number is limited due to the fact that brake pad blanks are horizontally placed in the prior art is solved.

The utility model relates to the technical field of lift shaft climbing cylinder formworks, and discloses a combined lift shaft climbing cylinder formwork device which comprises formworks, connecting blocks are fixedly connected to the outer walls of the formworks, connecting grooves are formed in the formworks, mounting grooves are formed in the formworks, tongue pieces are fixedly connected to the outer walls of the formworks, and the tongue pieces are fixedly connected to the outer walls of the formworks. A clamping groove is formed in the formwork, a sleeve is slidably connected to the interior of the formwork, a first limiting column is fixedly connected to the interior of the sleeve, and symmetrically-arranged clamping blocks are slidably connected to the outer wall of the first limiting column. According to the elevator shaft climbing formwork installation device, through cooperation of the connecting block, the tongue piece, the sleeve, the first limiting column, the first spring and the clamping block, the effect of rapidly installing the elevator shaft climbing formwork is achieved, and the problems that in the installation process, an operator needs to install the formwork through an installation bolt, independent reinforcement needs to be conducted between the formworks, and installation is not convenient are solved. The problem that the formwork is inconvenient to install is solved, and the construction efficiency of the formwork of the climbing cylinder of the elevator shaft is improved.

The invention belongs to the technical field of thermal field equipment, and discloses a guide cylinder for a thermal field and a manufacturing method of the guide cylinder. An integrated fiber prefabricated body is prepared on a mold, in the process, by controlling fiber layer laying, a barrel prefabricated part with the low fiber volume content, a ring prefabricated part with the high fiber volume content and a gradient transition area connecting the barrel prefabricated part and the ring prefabricated part are formed in the prefabricated body, and then a Z-direction reinforcing technology is adopted to enable the barrel prefabricated part, the ring prefabricated part and the gradient transition area to form a whole with continuous fibers; and carrying out densification treatment on the prefabricated body. By constructing an integrated structure with gradient performance, the guide cylinder body has excellent heat insulation performance, and the bottom ring piece has high mechanical strength. An anti-scouring functional layer with a reinforced bonding interface can be preferably arranged on the inner wall, and a bionic microscopic groove is machined, so that the structural reliability and the performance matching degree of the guide cylinder are cooperatively improved, and the service life of the guide cylinder is prolonged.

The utility model relates to the technical field of recycled concrete, and discloses an anti-seepage recycled concrete permeability detection device which comprises a barrel formwork, a plurality of anti-seepage parts are arranged in the barrel formwork and are connected in a clamped mode, two sealing rings are arranged in the barrel formwork, extrusion rings are arranged on the upper surfaces of the two sealing rings, and the extrusion rings are connected with the barrel formwork in a clamped mode. A plurality of detection pieces are mounted on the inner walls of the anti-seepage pieces, and a pressure cover is arranged above the uppermost barrel mold. According to the impermeable recycled concrete permeability detection device, pressure can be applied to a sealing ring through the cooperation of the sealing ring and an extrusion ring, so that the sealing ring can be in closer contact with an impermeable piece close to the sealing ring after being pressed, and the sealing performance of the plurality of impermeable pieces is improved; a water source can be uniformly sprayed onto the concrete test piece through the cooperation of the mounting rotating piece, the drainage pipe and the spray head, and an anti-permeation test can be performed on the test piece in the anti-permeation pieces through water pressure when the water source in the anti-permeation pieces is increased.

The angle-adjustable automatic vibration concrete mold comprises a fixed machine body and a driving motor, the fixed machine body and the driving motor are fixedly installed on the ground, a winding roller is fixedly installed on an output shaft of the driving motor, a winding steel wire rope is wound on the surface of the winding roller, and an arc-shaped sliding way is fixedly installed in the fixed machine body; and a limiting sliding block is movably sleeved with the arc-shaped sliding way in a limiting mode, a cylindrical mold is fixedly installed at the top of the limiting sliding block, and a fixed lantern ring is fixedly installed on the outer side wall of the cylindrical mold. According to the device, the inclination angle of the cylindrical mold is adjusted by winding and unwinding the winding steel wire rope through rotation of the winding roller, meanwhile, the inclination angle of the cylindrical mold can be determined by observing the rotation angle of the angle pointer and comparing the rotation angle with the angle dial plate, and accurate and rapid adjustment of the angle of the cylindrical mold can be achieved; and various inclined cylinders with different angles can be built through a group of cylinder molds, so that the production cost is greatly reduced.

This application relates to the field of bearing processing, and specifically discloses a TC bearing and its production process. The TC bearing includes a TC bearing and a wear-resistant layer. The wear-resistant layer includes wear-resistant cemented carbide, wear-resistant powder, and a cylindrical mold. The wear-resistant cemented carbide is adhesively bonded to the surface of the TC bearing. The main raw material of the wear-resistant cemented carbide is tungsten carbide. The outer surface of the TC bearing is sleeved with the cylindrical mold. The wear-resistant powder is filled between the wear-resistant cemented carbide and the cylindrical mold. The wear-resistant layer is sintered by plasma surfacing technology. Its preparation method is as follows: find good concentricity; introduce the wear-resistant powder into the barrel; weld; cool, and then perform grinding to remove excess material and grind to the finished size. The TC bearing of this application can be used for mechanical wear-resistant processing, and it has the advantage of good wear resistance. In addition, the preparation method of this application has the advantage of closer connection.

The invention provides multi-head heat shrink tube oil type expanding equipment, and relates to the technical field of heat shrink tube expanding equipment, the multi-head heat shrink tube oil type expanding equipment comprises a tube expanding machine main body, a plurality of tube expanding outer cylinder molds are mounted on the tube expanding machine main body, a mounting groove is formed in one end of each tube expanding outer cylinder mold, and a tube expanding inner cylinder mold is mounted in each mounting groove; a working channel is formed in the pipe expanding inner cylinder mold in a penetrating mode. According to the oil type expanding equipment for the multi-head heat shrink tube, through the arrangement of the tube expanding machine body, the tube expanding outer cylinder mold, the tube expanding inner cylinder mold, the cooling mechanism and the wiping mechanism, the heat shrink tube is subjected to tube expanding treatment in an internal expanding mode, and the heat shrink tube is subjected to cooling forming; and glycerin on the outer wall of the heat shrink tube is wiped and cleaned through the wiping mechanism, traditional cleaning procedures are reduced, environment pollution caused by water mist generated by mixing water into glycerin is reduced, the workshop space occupied by cleaning equipment is reduced, workers can conveniently and reasonably utilize the workshop space, and the space utilization rate is increased.

The utility model discloses a heavy pressure slow -releasing mechanism based on dynamic feedback belongs to mechanical pressure control technical field, the utility model discloses a polyurethane buffer block precontacting absorption impact energy is arranged at the upper die support column end, and the synergic compression mechanism of pressure guide column and spring is combined, realizes the staged pressure slow -releasing of the mold closing process. Further through the real -time feedback of pressure sensor to PLC controller, dynamic regulation inlet pressure makes the mold closing end pressure smooth transition to the set value. The utility model discloses a heavy pressure slow -releasing mechanism based on dynamic feedback has solved the problem of big noise, high cost of traditional air cylinder mold closing, and the mechanism has successfully been applied to the automobile sunshade curtain detection tool, and the mold closing noise is greatly reduced, and the synchronous precision has been effectively improved.

The utility model relates to the technical field of food machinery, in particular to a cake baking machine which comprises a machine frame. The cylinder mold supporting roller is fixed on the bracket; the cylinder mold is placed on the cylinder mold supporting roller; the internal heating part is positioned on the inner side of the cylinder mold; the external heating part is positioned on the outer side of the barrel mold; the feeding bracket assembly is located below the barrel mold and comprises a bracket and a conveying belt arranged on the bracket, a rotating shaft is arranged at one end of the bracket and fixed to one side of the rack, and a positioning shaft is arranged on a side bracket of the feeding bracket assembly; the cam is mounted on the rack; the positioning screw is mounted on the rack and is used for locking the cam; the handle is fixed on a core shaft of the cam; one end of the adjusting sleeve is a hole sleeve which sleeves the shaft on the outer side of the cam; one end of the locking adjusting rod is provided with an external thread and is fixed in a screw hole of the adjusting sleeve, and the other end of the locking adjusting rod is sleeved on a positioning shaft on the side edge of the feeding bracket combination. The angle of the feeding bracket combination can be adjusted, use is more flexible, and operation is convenient and fast.

The present application provides a cylindrical plate mold press, which relates to the technical field of coating and stamping equipment. The cylindrical plate mold press comprises an unwinding mechanism, a stamping seat and a rewinding mechanism. The unwinding mechanism is located upstream of the stamping seat, and the rewinding mechanism is located downstream of the stamping seat. The rewinding of the rewinding mechanism cooperates with the unwinding of the unwinding mechanism, so that the coating can pass through the stamping seat and be stamped by the stamping seat. The stamping seat comprises a seat body, a seamless mirror roller and a cylindrical plate. The seamless mirror roller is rotatably arranged on the seat body, and the cylindrical plate is detachably mounted on the seamless mirror roller. The cylindrical plate mold press greatly reduces the waste of products during coating and stamping by using a seamless mirror roller and a cylindrical plate, thereby reducing the need to prepare products of different sizes in stock.

The present invention provides a cable tube rapid extrusion device, relating to the field of cable tube extrusion, and comprising: a device main body, a cabinet body, a drive motor, rotary sleeves, internally threaded cylinders, insertion rods, an extrusion engagement cover, extrusion inner molds and extrusion outer cylinder molds. Two screw conveyor augers are mounted within the device main body, rotary shafts of the two screw conveyor augers are tubular structures, a semicircular arc structure of the device main body and a semicircular arc structure of an engagement cover form circular discharge channels, the extrusion engagement cover is connected to outer sides of the circular discharge channels by means of bolts, inner ends of the insertion rods are inserted into other ends of the tubular structures of the screw conveyor auger rotary shafts, the extrusion inner molds are mounted at outer ends of the insertion rods, two discharge cylinders are arranged on the extrusion engagement cover, and the extrusion outer cylinder molds are screwed on outer threads of the discharge cylinders by means of threads. The size of MPP cable tubes can be changed during extrusion, the cable tubes can be pre-cooled, and the problems that extrusion efficiency is low, the size of extruded cable tubes cannot be changed according to requirements, and cooling is too fast are solved.

The utility model relates to an extrusion device for an automobile sealing strip and belongs to the technical field of automobile sealing strip extrusion equipment. Comprising a bottom plate, a first plastic extruding machine and a second plastic extruding machine, the first plastic extruding machine and the second plastic extruding machine are distributed on the bottom plate in a right-angle mode, a forming cylinder die is installed on the bottom plate at the intersection of the first plastic extruding machine and the second plastic extruding machine through a supporting seat, and the forming cylinder die is connected with the first plastic extruding machine through a first forming die head. And the forming cylinder die is connected with the second plastic extruding machine through a second forming die head. According to the extrusion device for the automobile sealing strip, different molten materials can be jointly extruded, the subsequent process of manually smearing glue for bonding is avoided, the manual labor amount is effectively reduced, and meanwhile the product consistency can be guaranteed through the co-extrusion mode.

The invention relates to the technical field of metal part forming machining, in particular to a thin-wall curved surface component forming machine tool and an artificial intelligence system. The forming machine tool comprises a machine tool body as well as an extrusion rod assembly, a mold and an ejector rod which are arranged on the machine tool body from top to bottom, the die comprises an outer cylinder die, a lower concave die and an upper concave die, the lower concave die and the upper concave die are arranged in the outer cylinder die, a center through hole and a plurality of axial through holes are formed in the upper concave die, and the metal thin-wall cylinder is placed between the upper concave die and the lower concave die. The inner side and the outer side of the metal thin-wall cylinder are respectively an inner metal filling space and an outer metal filling space which are used for filling metal; the extrusion rod assembly is used for driving the upper female die and the lower female die to be closed, a formed metal thin-wall spherical shell is obtained, and internal metal and external metal conduct back pressure follow-up. And the ejector rod penetrates through a central bottom hole of the lower concave mold and is used for opening the mold and ejecting the formed metal thin-wall spherical shell. The method has the advantages of high yield, few microcosmic wrinkles and cracks, long fatigue life and the like.

The construction method of the self-climbing barrel formwork equipment comprises the steps that an embedded box is embedded in a poured barrel structure, the self-climbing barrel formwork equipment is installed on the poured barrel structure and jacked to a to-be-poured floor, a control unit controls a telescopic rod to extend so that a barrel corner formwork and a plane formwork can be assembled, and the self-climbing barrel formwork equipment can be formed; a concrete barrel structure is poured after the barrel outer formworks are closed and reinforced, after concrete reaches the strength required by design, the barrel outer formworks are removed, and the control unit controls the telescopic rods to contract so that the barrel corner formworks and the plane formworks can be removed; the control unit controls the hydraulic oil cylinder to contract, so that the climbing beam climbs and supports the embedded box on the same layer with the supporting beam; the control unit controls the hydraulic oil cylinder to extend, so that the supporting beam climbs and is supported on the pre-embedded box on the upper layer, and the climbing platform enters a construction state; and the concrete pouring construction of the cylinder structure is completed layer by layer by repeating the steps.

The application discloses a high-strength nanometer composite screw material based on a concentric fiber cylinder structure and a preparation method thereof. Specifically, 1) first, a PLGA fiber cylinder material with a diameter gradient is woven; 2) using an in-situ mineralization process, hydroxyapatite is mineralized on the surface of graphene oxide to obtain a GO / HA nanofiller, and a cold explosion method is used to prepare an alkali-dissolved chitosan / cellulose mixed solution which is compounded with the GO / HA, and the solution is defoamed through low-speed centrifugation; 3) the fiber cylinder is concentrically sleeved and fixed in an open cylinder mold, the above solution is cast on the wall of the mold, and the mold is transferred to a 60-80 DEG C condition for in-situ gelation; 4) after dialysis, the mold is transferred to a rotary drying device for drying and dehydration, and the required high-strength nanometer composite screw material is obtained after turning according to a drawing. The screw material adopts the GO / HA filler which has high dispersity and the concentric fiber cylinder structure for reinforcement, and the HA can promote osteogenesis, so that the screw strength and bioactivity requirements are met.

The invention discloses a heavy pressure slow release mechanism based on dynamic feedback and a control method thereof, and belongs to the technical field of mechanical pressure control. The polyurethane buffer blocks are arranged at the tail ends of the upper die supporting columns to absorb impact energy in a pre-contact mode, and staged pressure slow release in the die assembly process is achieved in combination with a cooperative compression mechanism of the pressure guide columns and the springs. Furthermore, the pressure is fed back to the PLC in real time through the pressure sensor, and the air inlet pressure is dynamically adjusted, so that the pressure at the mold closing tail end is stably transited to a set value. According to the heavy pressure slow release mechanism based on dynamic feedback and the control method thereof, the problems of large noise and high cost of traditional air cylinder mold closing are solved, the mechanism is successfully applied to an automobile sunshade curtain detection tool, the mold closing noise is greatly reduced, and the synchronization precision is effectively improved.

The invention discloses manufacturing equipment for dust purification and catalyst-loaded fiber filter tubes, which comprises a suction pump, an outer cylinder mold, an inner cylinder mold and a modeling mold, waste liquid holes are distributed in the outer cylinder mold and are used for communicating with the suction pump, the inner cylinder mold is arranged in the outer cylinder mold, a molding cavity is defined by the outer cylinder mold and the inner cylinder mold, and the molding cavity is communicated with the suction pump. The inner cylinder mold comprises a slurry inlet, a slurry outlet, a flow channel and a liquid outlet hole, the flow channel is arranged in the inner cylinder mold in a U shape, one end of the flow channel is communicated with the liquid inlet, the other end of the flow channel is communicated with the liquid outlet hole, and the flow channel is communicated with the forming cavity through the liquid outlet hole. Therefore, through the design of primary pulp circulation backflow, on one hand, the flowing speed of the fiber primary pulp in the flow channel can be increased, the forming space can be rapidly filled with the fiber primary pulp, and the dynamic fiber pulp fluid enables the fiber primary pulp to be always kept in a higher and more uniform fiber concentration state; and the fibers can grow along the inner wall of the modeling mold more uniformly, the forming efficiency of the fiber tube blank is improved, and the production time is shortened.

This utility model discloses an auxiliary structure for demolding fiberglass cylinders, relating to the technical field of fiberglass production equipment. It includes a base body, a support seat fixedly connected to one side of the upper surface of the base body, a lower mold fixedly connected to the top of the support seat, and an upper mold fixedly connected to the top of the lower mold. The lower mold and the upper mold together form a cylinder mold, and a mandrel is horizontally arranged inside the cylinder mold. A movable component is provided on the side of the upper surface of the base body away from the support seat. One end of the mandrel is connected to the movable component via a locking component. An auxiliary demolding component is provided on the outer side of the lower mold and the upper mold. This utility model, by designing the auxiliary demolding component, allows the air pump to be started and the control valve to be opened after the fiberglass cylinder has solidified in the mold, causing the annular airbag to inflate. The gas enters the gap between the mold and the cylinder through the air holes, effectively reducing the adhesion and friction between them, and significantly improving the demolding effect.

The utility model discloses a novel rain boot forming machine which comprises a machine base and is characterized in that a large bottom die and a die holder are arranged on the machine base, the large bottom die is located on the front side of the die holder, the die holder can be turned over towards the large bottom die, a first power source is correspondingly arranged on the die holder in a matched mode, and a left cylinder die and a right cylinder die are arranged on the die holder. The left barrel mold is arranged on the left side of the right barrel mold in a turnover opening and closing mode, the corresponding left barrel mold is provided with a third power source in a matched mode, the rear side of the left barrel mold is provided with a shoe last, the shoe last can be arranged in a turnover mode towards the left barrel mold, the corresponding shoe last is provided with a second power source in a matched mode, the front side of the left barrel mold is provided with a left middle bottom mold in a turnover mode, and the left middle bottom mold can be turned to avoid to the back face of the left barrel mold. A right middle bottom die is arranged on the front side of the right cylinder die in a turnover mode, the right middle bottom die can be turned over to avoid to the back face of the right cylinder die, and the corresponding die holder is provided with a left cylinder die backward turning avoiding groove and a right cylinder die backward turning avoiding groove. According to the utility model, the problem that a multi-component polymer in the mold flows along with the action of the mold during molding is solved.

The utility model discloses a cement pipeline forming machine provided with an inner mold retracting and stretching mechanism, which comprises a frame, an outer cylinder mold and an inner cylinder mold, and one side of the upper surface of the frame is fixedly connected with a support rod. According to the cement pipeline forming machine with the inner mold retracting and stretching mechanism, through the arrangement of the frame, the outer barrel mold, the inner barrel mold, the supporting rods, the air cylinders, the supporting frame and the pulleys, when the cement pipeline forming machine is used, the outer barrel mold slides to the working position along the supporting rods under the driving of the air cylinders, and a uniform annular cavity is formed by the outer barrel mold and the inner barrel mold; the concrete is injected into a cavity between the outer cylinder mold and the inner cylinder mold from the top of the equipment; a vibration device is started, so that bubbles are discharged from the compact concrete; a supporting frame slides upwards along a supporting rod; a user pushes a second supporting plate to drive the pulley to move inwards; and the second supporting plate drives the inner cylinder mold to move to break away from the inner wall of the pipeline to complete demolding.

The application discloses a self-opening-mold multi-cylinder EVA foaming machine and belongs to the technical field of foaming machines. The foaming machine comprises a base, a lower support fixedly installed on the upper surface of the base, an upper support connected with the lower support through a supporting column, and a frame of the foaming machine formed by the lower support, the supporting column and the upper support. Four limiting plates are installed between the upper support and the lower support, and a mold plate is arranged in the space between the upper support and the lower support. The mold plate is provided with a bayonet at each corner and is slidably connected with the four limiting plates. The auxiliary mold opening mechanism can prevent the mold plate from being adhered to the material, helps to realize the self-opening-mold purpose, ensures smooth mold opening, and additionally, the cooling mechanism can cool the mold plate once during the mold opening process, which helps to solidify the material, is favorable for demolding, avoids excessive temperature drop to increase subsequent energy consumption, and enables the mold plates to be mutually adsorbed, thereby helping to reduce the energy consumption of the multi-cylinder mold assembly.

The present invention relates to the technical field of templates for building structure construction, and provides a hinged variable-section elevator shaft mold, including four-wall templates, corner templates and template retracting and releasing racks; the number of four-wall templates and corner templates is four, the corner templates are right-angle templates, and each corner template is connected to two adjacent four-wall templates by hinges; the template retracting and releasing rack is located at the center of the cylinder mold, and the template retracting and releasing rack is respectively connected to the four four-wall templates through adjustable pull rods; the adjustable pull rods can drive the four-wall templates to approach or move away from the center of the cylinder mold, and then drive the corner templates to approach or move away from the center. The present invention can ensure that the four corners of the cylinder wall are 90 degrees and there are no grooves on the wall. A central template retracting and releasing rack is provided at the center of the cylinder mold. This structure can meet the construction needs, ensure that the elevator shaft is square, and is easy to process. The formwork and demoulding are simple and fast, simple to operate, and save labor and time; the corner templates and the four-wall templates are designed to be tongue-and-groove overlapped, which can effectively prevent leakage, and the concrete at the template joints is flat and has no grooves.

The utility model relates to the technical field of wax mould production, in particular to a wax mould ejection mechanism which comprises a wax mould casting table, supporting legs are fixedly installed at the bottom of the wax mould casting table, and a transmission ejection assembly is installed on the wax mould casting table. The transmission ejection assembly comprises two symmetrically-arranged half-mold-body molds, semicircular grooves are formed in the inner sides of the half-mold-body molds, electric telescopic rods are connected to the side edges of the half-mold-body molds, upper hydraulic rods are arranged over the two half-mold-body molds, connecting columns are installed at the output ends of the upper hydraulic rods, and inner barrel molds are fixedly connected to the bottoms of the connecting columns. The outer diameter of the inner cylinder mold is smaller than the inner diameter of the half mold body mold. When the electric telescopic rod is started to drive the half-mold-body molds on the two sides to separate and slide, the upper hydraulic rod and the lower hydraulic rod synchronously contract and extend, so that a formed wax mold is separated from the half-mold-body molds on the two sides and is lifted upwards at the same time, a good demolding effect is achieved, the cracking risk of the wax mold during demolding is reduced, and practicability is enhanced.

The invention discloses a precision forging type integral hammer middle cylinder mold and an automatic production line thereof, and belongs to the field of mold machining, the precision forging type integral hammer middle cylinder mold comprises grooving equipment, the grooving equipment comprises a fixing table used for fixing a middle cylinder mold base plate, the precision forging type integral hammer middle cylinder mold further comprises a rail support fixedly arranged on the fixing table, and a grooving mechanism is arranged on the rail support in a sliding mode; the grooving mechanism comprises a telescopic second mounting plate, a second mounting box is rotatably arranged on the second mounting plate, grooving machines are symmetrically and slidably arranged in the second mounting box, each grooving machine comprises a first grooving cutter and a second grooving cutter which are vertically distributed and can slide, and the grooving machine further comprises a slidably arranged driving source; the grooving equipment is used for conducting single-side synchronous grooving on a rectangular groove in a mold set, the drill bit is automatically replaced, and the machining time is saved.