2204results about "Stripping-off devices" patented technology

The invention provides a combined type stainless steel slide high-strength connecting piece forming die, and relates to the technical field of slides, the combined type stainless steel slide high-strength connecting piece forming die comprises an upper die base, a lower die base and a material ejecting component, a punch is arranged on one side of the upper die base, the lower die base and the upper die base are oppositely arranged, a machining groove is formed in the top face of the lower die base, and the upper die base is provided with a punching head; the position of a plate is calibrated in an all-dimensional mode through the deviation rectifying and limiting correcting structure, the rejection rate is reduced, the production efficiency is improved, automatic deviation rectifying of the two sides and the four corners of the plate is achieved through the downward pressing action of the upper die base in the deviation rectifying process before punching, and the deviation rectifying precision is improved. The multi-stage buffering protection die component adjusts the position of the plate, the punch forming success rate and the product quality are greatly improved, after punching is finished, all-directional position calibration can be conducted on the plate before punching, the rejection rate caused by deviation of the plate is greatly reduced, and the production efficiency is improved.

The invention relates to the field of dies, in particular to a front oxygen sensor support stamping die structure which comprises a fixed die and a movable die, and a punching mechanism, a bending mechanism, a rim charge cutting mechanism and a discharging mechanism are sequentially arranged between the fixed die and the movable die in the conveying direction of a material belt. The punching mechanism is used for punching various holes in different shapes and positions in a material belt, the rim charge cutting mechanism is used for accurately cutting off rim charges, the bending mechanism is used for gradually bending the material belt of a plane structure into the shape of a product, and the discharging mechanism is used for conveying the machined product out of a die. The wear rate of the contact surface of the mold is reduced.

The invention discloses a steel wheel spoke stamping die which comprises a bearing table, a lower die base arranged on the bearing table, a bearing detection assembly installed on the bearing table and used for bearing the lower die base and detecting the position of the lower die base, a press machine installed on the top of the bearing table, and an upper die base installed at the output end of the press machine in a transmission mode. The upper die base and the lower die base are matched to be used for punching a spoke workpiece, and the driving assembly is installed on the front face of the bearing table and used for driving the lower die base to revolve and driving the lower die base to rotate for die retreating. By means of the cooperative use mode of the lower die bases and the driving assembly, the driving assembly can drive the multiple lower die bases to rotate so that the multiple lower die bases can be matched with the upper die base to conduct stamping machining on the wheel spoke, and when the driving assembly drives the lower die bases to rotate to be separated from the upper die base, the lower die bases can also rotate by a circle so that the lower die bases can be automatically stripped; and therefore, the stamping production efficiency of the wheel spoke is improved.

The invention relates to the technical field of building board production, in particular to a blanking device for building board production, which comprises a table body, a hydraulic cylinder is fixedly mounted on the upper surface of a placement plate, a rectangular block is fixedly mounted on the upper surface of the table body, a push plate is fixedly mounted at one end of each of two sliding rods, and a mounting block is fixedly mounted at the other end of each of the two sliding rods. The sliding rod is sleeved with a telescopic spring, an inclined rod is fixedly installed on the upper surface of the push plate, and a discharging groove is formed in the upper surface of the table body. The side wall of the bottom end of a driving shaft of the hydraulic cylinder is fixedly provided with an abutting rod, the upper surface of the inclined rod is provided with a penetrating opening, the opening wall of the penetrating opening is horizontally provided with a round opening, a rotating shaft is rotatably installed in the round opening, the rotating shaft is fixedly sleeved with an inclined plate, and the lower surface of the inclined rod is provided with a rotation limiting opening. Compared with the prior art, the automatic blanking device has the advantages that stamped materials can be automatically blanked, manual unloading is not needed, potential safety hazards of manual unloading are avoided, the workload and the labor intensity of operators are relieved, and the working efficiency of blanking is improved.

The invention relates to the technical field of automobile part machining, and discloses a stamping device for automobile stamping part machining and a using method thereof.The stamping device comprises a base, a support is fixedly connected to the top of the base, and an electric telescopic rod is fixedly connected to the end, away from the base, of the support; as the air pressure cylinder slides downwards, the fixing column and the piston plate are fixed, and as the distance between the piston plate and the mounting frame is increased, the interior of the air pressure cylinder is converted from normal air pressure to negative pressure, and after equipment completes stamping, the piston plate drives the rotating blocking plate to rotate upwards with the connecting point as the center through the pulling line at the moment; the negative pressure in the air pressure cylinder acts on the inner wall of the sliding plate through the air pressure box, waste materials in the sliding plate are forced to be extracted by the negative pressure, slide upwards along the inner wall of the sliding plate and finally enter the air pressure box, and the waste materials generated after punching are prevented from falling into the base downwards to affect the punching precision of a follow-up die.

The invention relates to the technical field of socket steel pipes, and provides socket steel pipe machining equipment which comprises an expanding forming machine, and a machining feeding port is formed in the front end face of the expanding forming machine; the bearing frame is arranged on the front side of the front end face of the expanding forming machine, and the length direction of the bearing frame is parallel to the axial direction of the machining feeding port. The lifting carrier roller frames are arranged on the bearing frame at intervals in the length direction of the bearing frame and used for bearing steel pipes and adjusting the height of the steel pipes so that the steel pipes can be aligned to the machining feeding opening. The multiple discharging vertical plates are arranged on the bearing frame at intervals, at most one discharging vertical plate is arranged between every two adjacent lifting carrier roller frames, and after the lifting carrier roller frames descend to the height lower than the discharging vertical plates, the first guide faces are used for guiding the steel pipes to slide to one side of the bearing frame. The technical problems that in the prior art, feeding and discharging time is long after socket steel pipes are machined, and pipelines with different pipe diameters cannot be rapidly and accurately centered are solved.

The invention provides stamping equipment for automobile engine oil pan production, and belongs to the technical field of oil pan stamping equipment. Which comprises a stamping equipment body and is characterized in that a lower die and an upper die are installed on the stamping equipment body, a first supporting frame is installed on one side of the stamping equipment body, and a second supporting frame is installed on the other side of the stamping equipment body; an automobile oil pan material plate is placed on the top of the first supporting frame. By arranging the auxiliary feeding mechanism and the auxiliary discharging mechanism, the auxiliary feeding mechanism can be utilized, workers do not need to make direct contact with an automobile oil pan material plate, the automobile oil pan material plate can be rapidly and stably transferred to the position between the lower die and the upper die, and accurate alignment can be achieved after transferring, and the automobile oil pan material plate can be reliably placed on the top of the lower die; and compared with a traditional manual handheld plate feeding mode, the feeding device is safer and more reliable.

The invention discloses a feeding and discharging device for car window guide rail robot punching, and belongs to the technical field of automobile part machining. The feeding slide way is obliquely arranged, and workpieces automatically slide to a to-be-grabbed area on the lower side along the feeding slide way by means of gravity; the blocking mechanism is located on the feeding sliding way, when the workpieces exist in the area waiting for grabbing, the subsequent workpieces are blocked, and the next workpiece is released after the workpieces are moved out; the jacking mechanisms are located on the two sides of the to-be-grabbed area, and it is guaranteed that workpieces are accurately positioned; the detection module is in signal linkage with the robot, detects a workpiece in the area waiting for grabbing and triggers a grabbing signal; and the discharging mechanism comprises a self-separating assembly and a material box, and the self-separating assembly receives the punched workpieces and guides the workpieces to the material box. The whole process is highly automatic, the workpieces enter a grabbing waiting area one by one, the workpieces are accurately positioned by combining the left jacking air cylinder and the right jacking air cylinder, it is ensured that the workpieces are located at the accurate positions before grabbing every time, and the problems that traditional feeding and discharging equipment is inaccurate in positioning and low in efficiency are solved.

The utility model discloses a sheet metal stamping die, comprising a die and a top plate fixedly connected to the top of the die through a support rod, the bottom of the die is fixedly connected to a base through a fixing rod, and a groove is provided on the top of the die. The utility model relates to the technical field of stamping dies. The sheet metal stamping die drives a push block to move upward by controlling a second hydraulic telescopic rod, and the push block moves upward through an L-shaped plate, and the L-shaped plate drives a lift plate to move upward through a connecting plate and a support plate, so that the lift plate lifts up the sheet metal stamped in the groove, so that the stamped sheet metal can be easily moved out, and the push block continues to move upward to push the triangular plate, and the triangular plate drives the push plate to move leftward to push the sheet metal lifted by the lift plate, so that the stamped sheet metal can be easily pushed away, and no manual removal is required, which is more labor-saving to operate and reduces the labor level of sheet metal processing.

A four-edge double-bending die mechanism comprises an upper die (10) and a lower die (20), and the upper die (10) comprises an upper die base (11), a beating plate (12), an upper die plate (13) and a sliding block set (14; the lower die (20) comprises a lower die floating plate (21) and a lower die base (22), lower die bending blocks (23) are arranged on the peripheral sides of the lower die floating plate (21) and matched with the sliding block set (14) to form first-time bending, each lower die bending block (23) is provided with a side pushing bending mechanism (24) in a sliding mode, and the side pushing bending mechanisms (24) are arranged on the lower die floating plate (21) and matched with the sliding block set (14) to form second-time bending. And the lateral pushing bending mechanism (24) is driven by the corresponding upper die slotting tool (111) to form secondary bending with the sliding block group (14). The sliding block set is matched with the lower die bending block and the four side pushing bending mechanisms to complete product double-bending forming, the number of sets of dies is reduced, the number of operators is reduced, the cost is reduced, and the machining efficiency is also improved.

The invention provides a stamping die waste discharging mechanism, and relates to the technical field of stamping auxiliary equipment, the waste discharging mechanism comprises a discharging slide way and two blowing assemblies, and the bottom wall of the discharging slide way is provided with a plurality of material distribution discharging ports; a material supporting plate assembly is arranged on the inner side of each material distributing and discharging opening; a set of material blocking roller components are arranged on the side portion of each material distributing and discharging opening, the bottom of the material discharging sliding way is provided with a plurality of material blocking roller driving components connected with the bottoms of the material blocking roller components, and the material blocking roller driving components can act on the bottoms of the material blocking roller components so that the material blocking roller components can alternately rotate forwards and backwards. A jacking connecting rod is arranged at the top of the air blowing assembly, and the jacking connecting rod can act on the air blowing assembly when being pressed so that the air blowing assembly can spray air flow to the material receiving area; when the die assembly is in a die assembly state and punches the workpiece, the die assembly can press the jacking connecting rod downwards.

The invention relates to the technical field of punching product machining, in particular to a full-automatic feeding and discharging device for punching products, which comprises a four-axis mechanical arm and a mounting seat mounted at the output end of the four-axis mechanical arm in a telescopic sliding manner. A plurality of suction heads are arranged in the center of the suction cup jig, the suction nozzles and the suction heads are arranged in the same air inlet and exhaust system, the suction cup jig has a good suction and fixing effect on punching products with different surface areas conveniently, and the suction heads can be synchronously adjusted, so that the working efficiency when the positions of the suction heads are adjusted is further improved. That is to say, when a plurality of suction heads adsorb and fix a punching workpiece, air can be exhausted through the spray heads, so that blowing cleaning of a die and the punching workpiece is completed, more importantly, a combined air inlet and exhaust system of the spray heads and the suction heads cannot change along with changes of the positions of the suction heads, and synchronous work can be guaranteed all the time.

The invention discloses an automatic taking stamping die device with a waste separation function, and relates to the technical field of stamping machines, the automatic taking stamping die device comprises a bottom plate, the top surface of the bottom plate is provided with a stamping base unit capable of realizing classified and divided conveying of waste and a target workpiece after a stamping process is completed; the top surface of the stamping base unit is provided with a stamping execution unit with a function of quickly replacing a die as required; the stamping base unit comprises a stamping base frame fixedly mounted on the top surface of the bottom plate; when the stamping driving rod descends to the preset height, the punch makes contact with a stamping blank, workpiece shaping in the first stage and workpiece cutting and separating operation in the second stage are synchronously completed, after workpiece machining is completed, the punch mounting base continues to conduct downward pressing, the material taking pressing block presses one end of the workpiece, and the workpiece is cut and separated. The other end of the workpiece is promoted to tilt and fall into the material taking movable groove, clamping stagnation of the workpiece and the punch is prevented, meanwhile, it is ensured that the workpiece is attached to the surface of the guiding protective net, and smooth proceeding of the follow-up automatic workpiece taking procedure is ensured.

The utility model discloses a transformer iron core stamping die, and belongs to the technical field of stamping dies. The transformer iron core stamping die comprises a lower die and an upper die, a stamping cavity and a stamping head are arranged in the lower die and the upper die respectively, and the transformer iron core stamping die further comprises a demolding liquid cavity arranged in the lower die and filled with demolding liquid; the plurality of groups of atomizing nozzles are arranged in the stamping cavity; the piston cylinder is connected into the lower die, the telescopic end of the piston cylinder penetrates through the lower die, and the telescopic end can be extruded by the upper die and then contracted into the piston cylinder; the liquid inlet pipe is connected to the piston cylinder, and the other end of the liquid inlet pipe is located in the demolding liquid cavity; through the arrangement of the piston cylinder, in the using process, demolding liquid can be continuously sprayed out, then the demolding liquid is sprayed out through the atomization spray head, the side portion of an iron core to be stamped is sprayed, the iron core is prevented from being attached to the interior of the stamping cavity of the lower die, manual spraying is not needed, and using is convenient.

The invention relates to the technical field of top cover manufacturing, in particular to a multi-point anti-deformation stripping structure applied to a top cover stamping process, the multi-point anti-deformation stripping structure comprises a stripping frame of a concave structure, a double-layer limiting mechanism is arranged in the stripping frame, and a sub-frame assembly is arranged at the position, located on one side of the double-layer limiting mechanism, in the stripping frame; according to the invention, a composite stripping mode with a synergistic effect of multidirectional mechanical clamping, dynamic separation of the upper and lower molds and multi-point dynamic hammering is adopted, so that mold displacement in a demolding process is inhibited, demolding stability is ensured, demolding resistance and adsorption force can be eliminated, and residual stress in the upper and lower molds can be uniformly dispersed; the deformation risk after the top cover is formed is obviously reduced, and the top cover stripping efficiency is effectively improved.

The invention provides a high-stability workpiece feeding and discharging mechanism. The high-stability workpiece feeding and discharging mechanism comprises a feeding and discharging guide rail, a feeding and discharging station, a feeding station and a discharging station. The feeding and discharging device comprises a moving seat which is arranged on the feeding and discharging guide rail in a sliding mode and used for bearing corresponding workpieces, a lower driving piece connected between the moving seat and a moving driving device, an upper driving piece which is connected with the lower driving piece and can ascend and descend vertically and move transversely, and a clamping and holding device which is connected with the upper driving piece and located above the moving seat. The clamping device comprises a clamping piece which is driven by the clamping driving device and used for clamping the workpiece, a limiting structure used for limiting the workpiece is arranged on the moving seat, and the moving driving device is used for driving the lower driving piece and the upper driving piece to drive the moving seat and the clamping piece to move along the feeding and discharging guide rail together. The stroke and duration of clamping the workpiece in a suspended mode through the clamping piece are shortened, the risk that the workpiece slides down and is damaged during feeding and discharging is reduced to the maximum extent, the workpiece feeding and discharging stability of the feeding and discharging mechanism is improved, and the yield of workshop production is guaranteed.

The utility model discloses a spring sheet stamping device, comprising a workbench, a stamping component is fixedly installed on the top of the workbench, a centering component is fixedly installed on one side of the stamping component, the centering component comprises a fixed plate and a bidirectional threaded rod, the fixed plate is fixedly installed on one side of the stamping component, the bidirectional threaded rod is connected to the inner side wall of the fixed plate through a bearing, a pulley is fixedly connected to the side wall of the bidirectional threaded rod, a sliding rod is fixedly installed on the inner side wall of the fixed plate, and a movable plate is connected to the side wall of the bidirectional threaded rod through threads. The utility model relates to the technical field of spring sheet stamping; the spring sheet stamping device can center the spring steel through the provided centering component, so that it can be aligned after stamping, and the stamping effect will be better, the quality of the product will also be increased accordingly, and the occurrence of defective products will be reduced, so that the production efficiency will be better and the use experience will be guaranteed.

The invention discloses a die structure and method for forming a sliding block, and relates to the field of hardware stamping dies. The die structure comprises an upper die base, and die opening and closing movement is carried out relative to a lower die base; the upper backing plate is fixed with the upper die holder; the sliding block installation assembly is installed on the upper base plate in a sliding mode, and a sliding block is installed on the sliding block installation assembly in an embedded mode; one end of the material ejecting mechanism is fixed on the upper die base, and the other end of the material ejecting mechanism penetrates through the upper base plate and then abuts against the top of the sliding block, so that the sliding block slides relative to the sliding block mounting assembly; a positioning plate is arranged on the lower base plate and used for positioning and placing a previous working procedure piece, a lower die forming block is embedded in the center of the positioning plate, a lower die shaping block is embedded in the center of the lower die forming block, and when the upper die base and the lower die base are closed, the sliding block is in pressing fit with the upper die forming block, the lower die forming block and the positioning plate, and the previous working procedure piece is stamped to form the working procedure piece. The special shape and size requirements of the product can be better met, and the structural stability and reliability of the product are guaranteed.

The present invention discloses an automated processing equipment for radiators, and relates to the technical field of radiator processing, including a base, the top of the base is fixedly connected with a controller, the bottom of the controller is fixedly connected with a pressure rod, and the bottom of the pressure rod is fixedly connected with an upper pressure plate, the top of the base is fixedly connected with a slideway, a raw material plate is arranged on the inner side of the slideway, a receiving groove is provided on the slideway, and a lower pressure plate is movably connected inside the receiving groove. The present invention sets a reset component, and the guide block conflicts with the connecting column, so that the connecting column and the lower pressure plate are reset, which is conducive to the lower pressure plate being able to move down along the receiving groove, providing space for pressing the heat sink, and under the action of the reset spring, it is conducive to ejecting the pressed heat sink out of the receiving groove, so that it is convenient for the raw material plate to push the heat sink forward, and it is convenient to automatically enter the next round of operation.

The invention discloses a stamping injection mold, which relates to the field of stamping technology, and comprises a discharging mechanism and a roller bracket installed around the top of the discharging mechanism, wherein a stamping mechanism is arranged on the top of the discharging mechanism, and a press is arranged inside the stamping mechanism, wherein the discharging mechanism comprises a bottom mold fixing box, wherein supporting legs are fixedly installed around the bottom of the bottom mold fixing box, and a connecting hinge is symmetrically installed on the front side of the bottom mold fixing box, wherein the outer sides of two connecting hinges are rotatably connected with an inspection window, and a first motor cover is fixedly installed on one side of the bottom of the bottom mold fixing box, wherein an ejection motor is fixedly installed on one side of the inner side of the first motor cover, and is connected by clamping with a connecting ring through a connecting hook at the end of a connecting steel wire, and when a second lifting plate rises, under the action of the roller bracket and the fixed pulley, the connecting steel wire pulls the clamping block, thereby realizing the separation of the bottom mold body, and thus the injection molded part is taken out from the inside of the bottom mold body.

The punching equipment for automobile sheet metal part production comprises a machine body, a die is installed on the upper surface of the machine body, an assembling frame is installed on the upper surface of the machine body, a hydraulic cylinder is installed on the upper surface of the assembling frame and penetrates through the lower surface of the assembling frame, and an air blowing mechanism is arranged in the machine body. The blowing end of the blowing mechanism penetrates through the two sides of the machine body, and a machining assembly is arranged at the driving end of the hydraulic cylinder. The machining assembly comprises a linkage unit, the linkage unit comprises a connecting frame, the connecting frame is fixedly connected with the driving end of the hydraulic cylinder, and a stand column is fixedly connected to the lower surface of the connecting frame. The workpiece to be machined can be clamped before equipment conducts punching operation, so that the stability of the workpiece in the machining process is improved, and the machining quality of the equipment is improved.

The invention relates to the technical field of metal plate machining, and discloses metal plate non-cutting automatic machining equipment and a using method thereof.The metal plate non-cutting automatic machining equipment comprises a first feeding assembly, a base is fixedly connected to the outer wall of the right side of the first feeding assembly, a fixing frame is fixedly connected to the upper surface of the base, and a sensor is arranged in a connecting plate; and the outer wall of the other side of the fixing frame is fixedly connected with a PLC, the sensor is electrically connected with the PLC, the interior of the fixing frame is fixedly connected with a forming assembly, the interior of the base is provided with a fixing assembly, and the outer wall of the right side of the base is fixedly connected with a second feeding assembly. In the whole machining process, a series of links such as primary positioning, cutting-free forming machining, metal plate fixing and finished product transferring and collecting are sequentially completed from feeding of the metal plate, the automation degree of cutting-free machining of the metal plate is improved, manual intervention is reduced, the machining efficiency is improved, and manpower and time cost is saved for enterprises.

The invention discloses a punch forming device for an aluminum alloy inner container of a digital display cabinet. The punch forming device comprises a base. Through cooperative arrangement of the material taking mechanism and the adjusting mechanism, the advantage of convenient receiving and feeding is achieved, the height during material receiving and taking can be adjusted so as to adapt to the height of an inner container, falling damage caused by separation from a mold from a high position is avoided, meanwhile, the material taking mechanism moves towards a conveying position after material receiving and taking in the mode that the moving position and direction can be adjusted, and the production efficiency is improved. The required direction can be adjusted in the displacement process, direction adjustment is conducted in a rotating mode till the inner container is placed on the conveying equipment, the material taking mechanism can receive the formed inner container, the distance between the bearing pieces can be adjusted according to needs, and therefore the conveying efficiency is improved. And the transverse centering of the materials is guaranteed in a side clamping mode when the materials are placed, and meanwhile the adjusting mechanism is mainly used for achieving position adjustment, height adjustment and direction adjustment work when the materials are received and taken and after the materials are taken.

The invention relates to the technical field of aluminum product machining, and discloses an aluminum product automatic stamping device and a stamping technology.The aluminum product automatic stamping device comprises a workbench, the upper surface of the workbench is fixedly connected with a plurality of bottom plates in an annular array, and the upper surface of one of the bottom plates is fixedly connected with a storage rack used for storing aluminum plate raw materials; a positioning frame used for positioning the initial position of an aluminum plate raw material is fixedly connected to the outer wall of the top of the storage rack, and four lifting assemblies are sequentially arranged on the other four bottom plates. Punching, edge cutting, profiling and groove pressing can be integrated on the same workbench for sequential machining, automatic continuous high-speed production can be achieved, the workpiece machining efficiency is effectively improved, parallel work of multiple stations can be achieved, the production cycle of a whole product is greatly shortened, an aluminum plate can be pressed while being machined, and the production efficiency of the product is greatly improved. And the assembly quality, the product appearance and the overall yield are improved.

The invention discloses a stamping die and method, and relates to the technical field of stamping dies, two pipelines used for discharging waste are arranged on a placing frame, and a cleaning mechanism is arranged on one side of the placing frame; the cleaning mechanism comprises a knocking unit and an adsorption unit, the knocking unit is located on one side of the placing frame, and the knocking unit is used for knocking and vibrating the placing frame; the adsorption unit is located in the placement frame, the knocking unit is used in cooperation with the adsorption unit, and the adsorption unit is used for adsorbing and leading out blocked waste; a lubricating mechanism is arranged in the cleaning mechanism and sprays lubricating oil to a discharging pipeline of the cleaning mechanism. The design highlights of the invention are as follows; according to the precise part punching device, lubricating oil is sprayed to the interior of the discharging pipeline before precise part punching, so that the friction force between waste and the discharging pipeline is reduced, the waste is prevented from being clamped in the discharging pipeline, and the waste discharging smoothness is further guaranteed; the phenomenon that the die is damaged due to the fact that the waste is not discharged in time is avoided, and then normal operation of punching work of precision parts is guaranteed.

The invention relates to a method and to a machine tool for machining planar workpieces, in particular metal sheets, wherein an upper tool (11), which can be moved along a reciprocation axis (14) by means of a reciprocation drive device (13) in a direction toward a workpiece (10) to be machined by means of the upper tool (11) and in the opposite direction, is positioned along an upper positioning axis (16) extending perpendicularly to the reciprocation axis (14) by means of at least one motor drive assembly (17), wherein a lower tool (9), which is aligned with the upper tool (11), is positioned along a lower positioning axis (25) by means of at least one motor drive assembly (26), which lower positioning axis is oriented perpendicularly to the reciprocation axis (14) of the upper tool (11), wherein the upper and lower tools (11, 9) are moved in the frame interior (7) of a machine frame (2), wherein the workpiece (10) lies on a workpiece support (28, 29) for machining, wherein the motor drive assemblies (17, 26) are controlled for moving the upper and lower tools (11, 9) by means of a controller (15) and at least one workpiece part (81) is cut from the workpiece (10), wherein, in order to remove the at least one workpiece part (81) cut from the workpiece (10) after the last cutting step, the upper tool (11) is moved outside of a spatial volume (220) which extends above the cut workpiece part (81) and which is formed at least by means of a predefined part of the base area of the workpiece part (81) in the workpiece plane and of a perpendicular to the workpiece part (81) toward the upper positioning axis (16) or by a predefined part of the base area and of a region outside the base area of the workpiece part (81) in the workpiece plane and of a perpendicular to the workpiece part (81) toward the upper positioning axis (16), and then the cut workpiece part (81) is removed.

The invention provides an aluminum-plastic combined cover punching device, and belongs to the technical field of aluminum-plastic combined cover punching, the aluminum-plastic combined cover punching device comprises a punching machine and an adjusting mechanism arranged in a punching area of the punching machine, the adjusting mechanism comprises a rotating table rotationally connected in the punching area of the punching machine, a plurality of bottom dies are arranged at the edge of the upper end of the rotating table, and a fixed table is arranged at the upper end of the rotating table; sliding rods are slidably connected to the positions, close to the bottom dies, of the edge of the upper end of the fixing table, stamping die heads matched with the bottom dies are arranged at the lower ends of the sliding rods, first springs are arranged between the tops of the sliding rods and the fixing table, and the first springs are movably arranged on the outer portions of the adjacent sliding rods on the same side in a sleeving mode; a driving assembly used for driving the rotating table to rotate is further arranged at the lower end of the top plate, and a discharging assembly is further arranged on the fixed table. Through the multi-station design of the rotating table, quick switching of the bottom dies and the stamping die heads of different specifications is achieved, the multi-specification production can be adapted without long-time shutdown for die replacement, and the machining continuity and the equipment utilization rate are remarkably improved.

The invention discloses a device and method for forming the inner wall of a copper alloy contraction and expansion section for a liquid rocket engine, and the device for forming the inner wall of the contraction and expansion section comprises the following steps: clamping a blank once, and forming the blank twice by using a hydraulic machine to obtain the inner wall of the contraction and expansion section with machining allowance; and carrying out heat treatment and machining on the inner wall of the convergent-divergent section with the machining allowance to obtain the inner wall of the convergent-divergent section. The required raw materials are light in weight, the material utilization rate is high, the production period is short, the machining efficiency is high, and the manufacturing cost of the inner wall of the copper alloy contraction and expansion section for the liquid rocket engine can be greatly reduced.

The utility model relates to the technical field of flanging devices, in particular to a pipe fitting bidirectional in-hole flanging device. An upper die assembly is arranged above a lower die assembly; the lower die assembly comprises a lower die base and a supporting column, the die core assembly comprises a supporting piece, a rotating pin, a connecting piece and a female die core, and the axis of the rotating pin is perpendicular to the plane where the front end face of the supporting piece is located. One end of the connecting piece is rotationally connected with the rotating pin, and the other end of the connecting piece is fixedly connected with the female die core; the female die core is located above the supporting column, and the upper end face of the supporting column abuts against the bottom end face of the female die core to support the female die core. The upper die assembly comprises an upper die base and a hole flanging assembly, the hole flanging assembly comprises a punch arranged in a protruding mode in the direction of the female die core, and the position of the punch corresponds to the position of the supporting column. According to the pipe fitting two-way hole inner flanging device, suspended operation of the female die core can be avoided, the supporting stability of the female die core is improved, the service life is prolonged, meanwhile, a pipe fitting enters and exits the female die core conveniently and smoothly, and the problem that the female die core is prone to damage due to the small thickness and low supporting strength is solved.

The invention belongs to the field of metal plate rolling, and particularly discloses a variable-diameter metal plate winding pipe making device which comprises an automatic feeding mechanism, a two-stage self-adaptive downward pressing mechanism, an automatic feeding and discharging mechanism and an extrusion plate rolling mechanism. The automatic feeding mechanism comprises a bottom plate, a feeding assembly and a discharging sliding groove, and the discharging sliding groove is formed in the bottom plate; the feeding assembly is arranged on the bottom plate. Lifting of the first sliding block and the second sliding block can be controlled through the two-stage self-adaptive downward-pressing mechanism, transverse movement of the material returning shifting fork and lifting of the first sliding block can be sequentially driven through the driving motor serving as a driving source, and after the first sliding block descends to the designated position, the second sliding block can be driven to ascend and descend to the designated position. The rubber feeding wheel is driven to rotate through automatic combination of the lifting gear and the transmission idle wheel, and therefore automatic feeding of the metal plates is completed.