70 results about "Forming face" patented technology

The invention discloses a manufacturing mold and a manufacturing method of a cast-in-place decorative concrete product, and belongs to the technical field of building construction. The supporting base plates are detachably installed on the base, the supporting base plates and the supporting face are subjected to die assembly to form a forming cavity with an opening in the top, and installation grooves are formed in the inner surfaces of the supporting base plates in an array mode; the multiple vibrators are embedded into the corresponding mounting grooves correspondingly, and all the vibrators are electrically connected with a controller arranged on the outer side of the forming cavity; the multiple vibration transmission plates correspondingly cover the inner surfaces of the supporting base plates respectively and abut against the output ends of the vibrators; the multiple forming panels correspondingly and detachably cover the sides, away from the supporting base plate, of the vibration transmission plates, and texture structures are prefabricated on the inner surfaces of the forming panels; the two adjacent forming panels are connected in a sealed mode, and the forming quality of the cast-in-place decorative concrete product can be effectively guaranteed.

The application relates to a one-time forming face skin manufacturing process of an internal embedded structure body, and relates to the plastic material forming technical field, in particular to a one-time forming face skin manufacturing process of an internal embedded structure body, which comprises the following steps: step one: preparing a face skin lower die, a face skin upper die and a hoop; according to the characteristics of a target face shape, selecting the face skin lower die, the face skin upper die and various driving devices to be embedded in the face skin; the driving devices comprise support pieces and connecting pieces arranged above the support pieces and used for being connected to various automatic force systems; the face skin upper die is provided with an opening communicating with the upper and lower parts at the position corresponding to each support piece, and is provided with a support frame at the opening; through the combination of the face skin lower die, the face skin upper die and the various driving devices, the flexible adaptation of different face shapes and the one-time wrapping forming of the various driving devices are realized, the mold configuration cost is reduced, the cumulative error of multiple positioning is eliminated, and the uniformity of the face skin wall thickness and the product quality are improved.

The utility model discloses a side core-pulling type shell injection mold which comprises an upper mold, a lower mold, a first hole forming sliding block structure, a second hole forming sliding block structure, a side core-pulling mechanism and a glue injection mechanism, the upper mold is provided with an upper mold core, the bottom of the upper mold core is provided with a first forming surface, the lower mold is provided with a lower mold core, and the top of the lower mold core is provided with a second forming surface; a third forming face is arranged on the side, close to the lower mold core, of the first sliding block, and a through hole forming part is arranged on the third forming face. The side, close to the lower mold core, of the insert is provided with a fourth forming face, the end, close to the insert, of the second sliding block is connected with a core used for forming an inner cavity of a shell, the core penetrates through the insert to be arranged between the upper mold core and the lower mold core, and the side, close to the lower mold core, of the third sliding block is provided with a fifth forming face. The top of the third sliding block is downwards provided with a glue inlet runner exposed out of the fifth forming face. Glue can be fed from the side face of the shell, water gap marks are prevented from being left on the top face of the shell, and the attractiveness of the shell is better.

The invention relates to the field of metal stamping equipment, and discloses a stamping die for circular machine needle blank forming, which comprises a stamping platform, a stamping support is arranged at the top of the stamping platform, and a male die is arranged at the bottom of the stamping support; the connecting support is arranged on the stamping platform, two middle modules are arranged on the connecting support, first grooves are formed in the middle modules, two side modules are further arranged on the connecting support, the height of the side modules is lower than that of the middle modules, and second grooves are formed in the side modules. Compared with the prior art, in order to solve the problems that a small-size circular knitting needle blank is small in dead weight, small in interface gap and prone to retention after mold opening due to end special-shaped embedding, the female mold forming face is divided into the middle mold set and the side mold set, and the side mold set is driven to actively move downwards and be separated in the return stroke stage of the male mold; and the end part forming surface is firstly withdrawn and the enveloping constraint is relieved, so that the workpiece is prevented from being ejected out in an unbalanced loading manner by depending on an ejector pin or an ejector plate in a state that the end part is still clung to the cavity.

The utility model discloses a forming die of a carbon fiber engine arm, which comprises an upper die and a lower die, the bottom of the upper die is concavely provided with an upper forming surface upwards, and the top of the lower die is concavely provided with a lower forming surface downwards; the bottom wall of the lower forming face is downwards provided with a containing groove, an insert is arranged in the containing groove, the top of the insert is provided with a hole forming face used for forming a through hole of the carbon fiber engine arm, the hole forming face protrudes out of the containing groove, the bottom of the lower die is upwards concavely provided with a groove, the top wall of the groove is provided with a via hole communicated with the containing groove, and a screw penetrates through the via hole. The screw comprises a screw head and a screw rod connected with the top of the screw head, a first silica gel gasket is clamped between the insert and the bottom wall of the containing groove, and a second silica gel gasket and a metal gasket are sequentially arranged between the top of the screw head and the top wall of the groove from top to bottom. According to the carbon fiber vehicle arm, the through holes are formed in the carbon fiber vehicle arm, the pits are formed in the through holes after the carbon fiber vehicle arm is formed, follow-up machining of the through holes is facilitated through the pits, ejection marks cannot be left on the carbon fiber vehicle arm, and the structural design is ingenious.

The utility model provides an injection molding part and an injection mold, and relates to the technical field of injection molding, and the injection molding part comprises a supporting part and a main body part; the supporting part is provided with a first end face and a second end face which are opposite in the first direction and a side wall face located between the first end face and the second end face, and a partial area of the second end face is sunken to form a forming groove; the main body part and the supporting part form an integrated structure, and the main body part protrudes out of the first end face in the first direction; wherein the injection molding part is provided with a front mold forming face and a rear mold forming face, the front mold forming face comprises the outer surface of the main body part and the first end face, and the rear mold forming face comprises the groove wall face of the forming groove, the second end face and at least part of the side wall face. According to the injection molding part, the forming quality of the injection molding part can be improved, and the manufacturing cost of an injection mold can be reduced.

The utility model discloses a tile steel sheet forming lower mould structure, it includes support part and forming part, the top of forming part has a forming face domain, the forming part includes a plurality of die heads, each die head is the bar structure, each die head is placed on the support part side by side and closely and all with support part fixedly movable connection, the top of each die head all has a forming grain along its length direction extension, and a plurality of forming grain forms the forming face domain.

The invention discloses a composite material forming mold with an embedded part and a manufacturing method of the composite material forming mold, and relates to the technical field of composite material forming, and the composite material forming mold of the embedded part comprises a first embedded part area provided with a first embedded part and a non-embedded part area not provided with the first embedded part; the first embedded part area sequentially comprises a gel coat layer, a first structural layer, a heat conduction diffusion layer, a second structural layer and a thermal buffer layer from a position close to a forming surface to a position far away from the forming surface in the thickness direction of the mold; the thermal buffer layer is arranged on the outer surface of the second structural layer in a composite mode and covers the end, away from the forming face, of the first embedded part. According to the composite material forming mold with the embedded parts, the heat conduction diffusion layer and the heat buffer layer are arranged in the first embedded part area, through the synergistic effect of transverse diffusion and heat insulation in the thickness direction, the local heat flux density is reduced, the temperature gradient is gentle, and overheating and thermal stress concentration of the embedded part area are avoided; and the thermal stability of the mold and the precision consistency of molded parts are improved.

An anti-deflection injection mold with a floating needle positioning mechanism comprises a front mold body and a rear mold body, a cavity is defined by the forming faces of the front mold body and the rear mold body, an insert is arranged in the cavity, and a positioning mechanism is arranged on the opposite side of the insert. The positioning mechanism comprises a guide sleeve fixed in the injection mold, a floating needle is slidably connected in the guide sleeve, the front end of the floating needle can penetrate through the guide sleeve to be connected with the insert in an abutting mode, a limiting step is arranged at the rear end of the floating needle, and a reset elastic piece is arranged between the front end of the limiting step and the guide sleeve. A driving assembly is arranged at the rear end of the floating needle and is subjected to sequential control through a PLC (Programmable Logic Controller) control system; a pressure sensor is arranged at the output end of the driving assembly. Through the synergistic effect of the floating needle, the driving assembly and the PLC control system, accurate positioning and automatic avoiding of the insert in the injection molding process are achieved. The stability and reliability of the injection molding process are ensured by adopting the symmetrically distributed positioning mechanisms, closed-loop control of the pressure sensor and sequential control of the PLC system.

The utility model discloses a die structure applied to a fixing ring, which relates to the technical field of die stamping manufacturing and comprises an upper die, a lower die and a lower die. The upper male die is located in the upper male die hole, and an upper male die forming face is arranged on the lower side of the outer side wall of the upper male die. A sliding block cavity and a vertical lower top die hole are sequentially formed in the lower die from top to bottom; a sliding block inclined surface is arranged at the position, facing the guide inclined surface, of the lower sliding block, and a lower sliding block forming surface is arranged at the position, facing the upper male die, of the lower sliding block; the lower top die is positioned in the lower top die hole; a workpiece can be quickly machined into a fixing ring, the first outer forming face of the lower sliding block forming face corresponds to an upper side vertical ring part of the workpiece, the second outer forming face corresponds to a convex ring part of the workpiece for forming, the top face of the lower top die corresponds to a lower side horizontal ring part of the workpiece for forming, and particularly convex ring parts with various section shapes are machined. The finished product effect is ensured.

The invention relates to the field of special-shaped optical fiber processing equipment, and discloses special-shaped optical fiber bundle forming tool processing equipment, a processing method and a forming tool. The special-shaped optical fiber bundle forming tool processing equipment comprises a pressure machine table, a heating device and a forming mold, and the forming mold comprises a bottom mold, a side mold, an extrusion mold and a special-shaped mandrel; the bottom die is installed on a working table of a press machine table, the side die is installed on the bottom die, a special-shaped tool forming cavity is formed in the side die, an extrusion boss is arranged on the extrusion die, the extrusion die is installed on the side die through cooperation of the extrusion boss and the special-shaped tool forming cavity, and the outer side face of the special-shaped mandrel is arranged to be a special-shaped forming face. One end of the special-shaped mandrel is installed in the mandrel positioning hole in the bottom die, the other end of the special-shaped mandrel is installed in the special-shaped mandrel receding hole in the extrusion die in a sliding mode, the heating device is arranged in the adjacent area of the forming die, machining of the special-shaped optical fiber bundle can be facilitated, and the forming effect of the special-shaped optical fiber bundle is guaranteed.

The invention discloses a testing device for underground diaphragm wall pouring, and the testing device comprises a visual box body which comprises an opening end part and an accommodation cavity; the reserved groove box is arranged in the accommodating cavity; the material lifting device is used for conveying materials into the containing cavity. The testing device for underground diaphragm wall pouring can be repeatedly used, soil body contact forming faces are reserved (the reserved groove box ensures that the contact faces of different tested soil bodies are consistent), the pouring situation can be observed (the pouring situation can be observed through the visual box body), soil body grooving is easy, and the testing efficiency is improved. The problems that an existing test device is high in test cost, large in detection difficulty, high in labor cost, difficult to operate repeatedly, not easy to observe, incapable of reflecting the influence of pouring influence factors of the reduced-scale underground diaphragm wall on forming of the reduced-scale underground diaphragm wall and the like are solved.

The invention belongs to the technical field of composite material component manufacturing in the technical field of aerospace, and discloses an integral demolding device and method for a cylinder section workpiece. The device comprises a barrel-shaped mold and a demolding ring, the barrel-shaped mold is of a conical integrated structure, a large end face and a small end face are formed at the two ends of the barrel-shaped mold respectively, the outer side wall face of the barrel-shaped mold forms a working face, and the working face sequentially comprises a barrel section workpiece size forming face and a barrel section workpiece demolding auxiliary allowance forming face in the direction from the small end face to the large end face; the demolding ring belt comprises a demolding ring and a push-out assembly, the demolding ring is clamped between the barrel section workpiece demolding auxiliary allowance part and the barrel section workpiece demolding auxiliary allowance forming face, and the push-out assembly is arranged on the barrel-shaped mold and is in transmission connection with the demolding ring so that the demolding ring can move in the direction towards the small end face. And the demolding action force is transmitted to the cylinder section workpiece size forming part through the cylinder section workpiece demolding auxiliary allowance part. In this way, nondestructive demolding can be conducted on the cylinder section workpiece, and the demolding ring is simple in structure, convenient to use and high in efficiency.

The utility model relates to a structure convenient for replacing a core on a hot-pressing die, and belongs to the technical field of hot-pressing dies. Comprising a lower die base, the top of the lower die base is provided with a forming face and a plurality of cores, the bottoms of the cores are provided with connecting rods, the bottoms of the cores are in threaded connection with the connecting rods, the outer side walls of the tops of the cores are provided with key teeth, the bottoms of the connecting rods penetrate through the lower die base and a push plate, and the bottom ends of the connecting rods are fixedly connected with a bottom plate. A sleeve in sliding connection is arranged on the outer sides of the connecting rod and the core, and the bottom of the sleeve is fixedly connected with the push plate; according to the scheme, after the core in the lower die holder is abraded, the core can be screwed out from the forming surface and then replaced by a new core only by moving the lower die holder to be separated from the upper die set and using a screwdriver corresponding to the key tooth structure on the core, so that the technical problem that the whole die needs to be opened when the core is replaced in the prior art is solved; and the production efficiency is improved.

The utility model discloses a forming die for a medical mask, which comprises an upper die, a lower die and an elastic ejection component arranged in the lower die, the elastic ejection component consists of a spring ejector pin and a cavity insert, the spring ejector pin comprises an ejector pin part and an ejection spring, and the lower die is provided with a limiting groove for placing the ejection spring. The upper mold is provided with an air inlet and a cylindrical limiting groove, the air inlet is located in a non-forming key area of the neck of the upper mold, during working, a green body is put into an upper mold cavity and then mold closing is conducted, the cylindrical limiting groove pushes the cavity insert to move downwards to compress the spring ejector pin, the cavity is closed, and supercritical fluid is injected into the cavity through the air inlet to be foamed and formed; during demolding, the upper mold moves upwards, the spring ejector pin rebounds to push the cavity insert to move upwards, the forming mask is driven to be separated from the lower mold, and convenient demolding is achieved. The problem that demolding is difficult is solved through the elastic ejection assembly, the conical exhaust hole exhausts air thoroughly, the air inlet hole is reasonable in arrangement, the product quality and the production efficiency are improved, and the medical mask mold is suitable for batch production of medical masks.

The invention belongs to the field of candle cup production dies, particularly relates to a multi-cavity punch forming die for a candle cup with a curled edge, and provides the multi-cavity punch forming die for the candle cup with the curled edge to solve the problems that in the prior art, efficiency is low, the curled edge effect is poor, and strength is low, and the multi-cavity punch forming die for the candle cup with the curled edge comprises an upper die body and a lower die body. The lower end of the upper die is provided with a plurality of concave die assemblies which are distributed and correspond to the convex die assemblies up and down, the plurality of concave die assemblies form a multi-cavity concave die assembly, and the multi-cavity concave die assembly is matched with the multi-cavity convex die assembly to form a structure for punching a plurality of candle cups at a time; a precise hemming structure is arranged on the male die assembly, a complete hemming process is formed through cooperation of a guide face, a forming face, a backhoe face and a top hemming face, the edge hemming of the candle cup can be full and smooth, and the overall strength is improved.

The utility model relates to the technical field of selective laser melting additive manufacturing, in particular to a scraper device and selective laser melting additive manufacturing equipment, which comprises a support column, a flexible part and a defect identification part, the support column is used for being connected with a driving mechanism of the selective laser melting additive manufacturing equipment so as to be capable of moving under the driving of the driving mechanism; the flexible part is fixedly arranged on the outer side of the supporting column in a sleeving mode and forms a working end below the supporting column. The working end can be driven by the supporting column to flatly scrape powder to a forming face, and a uniform powder bed is formed. The defect recognition part is fixedly arranged between the flexible part and the supporting column, the defect recognition part is in signal connection with an industrial personal computer of the selective laser melting additive manufacturing equipment, and after the working end of the flexible part makes contact with defects on the powder bed, the flexible part can extrude the defect recognition part and make the defect recognition part generate an alarm signal. And the industrial personal computer stops working of the driving mechanism after receiving the alarm signal, the structure is simple, the use is convenient, and manpower and material resources are effectively saved.

The utility model relates to a runner plate with a quick insertion pipe orifice, which comprises a runner plate main body and a pipe head, and the runner plate main body is provided with a first matching part; the pipe head is provided with a second matching part used for being connected with the first matching part in a matched mode. The runner plate body and the pipe heads can be independently manufactured through 3D printing, batch production can be achieved, the forming face of each pipe head can be machined so as to obtain the sealing face with the needed size precision and roughness precision, tools are not needed, the machining process of the sealing faces of the pipe heads can be achieved through a machine tool, then the machined pipe heads are connected with the runner plate body, and the machining efficiency is improved. And the production efficiency and the processing stability are effectively improved.

The utility model discloses a stair section mould, relates to mould technical field, including the stair section mould also includes the support frame, the support frame includes base plate and side plate that fixed connection, said base plate and side plate enclose to form the accommodation space, a plurality of said core mould block is provided in the accommodation space, said core mould block is equipped with said core mould block, said core mould block is equipped with said core mould block, said core mould block is equipped with said core mould block. The adjacent core modules are tightly attached, the surfaces of the multiple core modules are combined to form a forming face, the forming face faces the side plate, a forming space is separated in the containing space, the forming space is attached to the core modules, and the included angle of the core modules relative to the side plate can be adjusted. A pouring opening is formed in the top of the forming space and communicates with the forming space and the outside. Stair section molds with different step numbers can be prefabricated, stair section molds with different step widths and step heights can be manufactured, the manufacturing cost of the assembly type prefabricated stair is reduced, and the manufacturing efficiency is improved.

The utility model relates to the technical field of machining and manufacturing, in particular to a hot compression molding device. The groove of the lower die provided by the utility model is provided with the first curved wall and the second curved wall which are arranged at the included angle, so that the cross section line segment of the first curved wall and the cross section line segment of the second curved wall are arranged at the included angle with the bottom surface of the lower die, and the cross section line segment of the first curved wall and the cross section line segment of the second curved wall are not vertical to the ground; when a molten material sheet is stamped, the material can slowly move along the first curved wall and the second curved wall, and compared with the prior art that the curved wall is perpendicular to the ground, the overall thickness of the curved frame obtained by the hot compression molding device is uniform. The upper die and the lower die are accurately matched, and pressure is applied to make the material sheet slide and be bent along with the die forming face.

The utility model discloses a multidirectional secondary slide block core-pulling mould structure, which comprises a primary slide block, a secondary slide block and a driving shovel base, the primary slide block is in sliding fit with a secondary chute, the driving shovel base is arranged above the secondary slide block and is used for driving the primary slide block to slide back and forth, a workpiece forming surface is formed at the front end of the primary slide block, and the secondary slide block is arranged on the workpiece forming surface. A core-pulling sliding block is arranged above and / or below the primary sliding block in a stacked mode, the core-pulling sliding block can slide front and back relative to the primary sliding block, the front-back sliding track of the core-pulling sliding block is located on the radial extension line of the workpiece forming face, and a forming pin rod protruding towards the front side of the workpiece forming face is arranged at the front end of the core-pulling sliding block. The top face and / or the bottom face of the primary sliding block are / is provided with containing grooves corresponding to the core pulling sliding blocks in a one-to-one mode, movable limiting blocks protruding towards the interiors of the containing grooves are formed at the rear ends of the core pulling sliding blocks, and the movable limiting blocks can move left and right relative to the containing grooves. The multi-directional synchronous core pulling mechanism can synchronously pull cores in multiple directions, and is simple in structure and simplified in action process.

The invention provides a sliding block feeding mechanism of a zinc alloy electric tool outer cover die-casting die, and belongs to the technical field of dies. The die comprises an upper die and a lower die, and the middle of the lower die is concavely provided with a lower forming groove. The upper forming face, the lower forming face, the first side forming face and the second side forming face are combined to form a forming cavity matched with a shell structure, and the problem that middle pouring cannot be achieved due to sliding block shielding is solved; molten liquid can penetrate through a sliding block on the side part of a product to enter a forming cavity, so that pouring from the middle of the length or the width of the shell is realized; and by means of the multi-dimensional penetrating type pouring runner structure, pouring can be conducted from the front height and the rear height of the forming cavity under the condition that the number of injection molding pipes is not increased, the pouring effect can be further improved, and the shell forming quality is guaranteed.

The invention relates to the technical field of additive manufacturing, in particular to an additive manufacturing method, manufacturing equipment and a forming platform, and the additive manufacturing method comprises the steps that a base material with a forming face and a functional part with an entity boundary are configured; the top surfaces of the base material and the functional part are initially reset and have the same height as the powder spreading surface; and a printing task is executed, and in the printing process, at least part of the top face of the functional part protrudes out of the top face of the base material and is contained in at least part of the area outside the main body structure of the printing workpiece. In the 3D powder laying printing process of additive manufacturing, the functional part is arranged in at least part of the area, except the printing workpiece main body structure, in the forming bin, and the functional part can achieve the effects of filling, supporting and being combined with the printing workpiece main body structure.

The invention belongs to the technical field of glass processing equipment, and particularly relates to a glass forming mold and a glass production line. The glass forming mold is used for bending and forming heated and softened glass to be formed, the glass forming mold comprises an annular forming ring, a base fixedly connected with the forming ring and used for supporting the forming ring and a supporting piece connected to the forming ring, and the forming ring and the supporting piece are both used for supporting the glass to be formed. The forming ring is provided with an annular first forming surface for supporting the edge of the to-be-formed glass, the first forming surface defines an arc-shaped surface, the arc-shaped surface is sunken in the gravity direction, the supporting piece is located in an area defined by the forming ring, and the supporting piece is provided with a second forming surface protruding in the direction away from the gravity direction; the second forming face is used for supporting the middle area of the to-be-formed glass. The mold manufacturing cost can be saved, and the mold is suitable for producing the rear windshield with the concave-convex cambered surface.

The invention discloses a 3D printing composite material forming mold and a manufacturing method thereof. The 3D printing composite material forming mold comprises a composite material base body, a base and a Z-direction limiting structure. The top face of the composite material base body is a forming face. The base is connected to the bottom of the composite material base body; the Z-direction limiting structure is arranged between the composite material base body and the base and used for limiting Z-direction displacement of the composite material base body under the high-temperature working condition, and the Z-direction limiting structure has the beneficial effects that buckling deformation of the mold under the influence of the high-temperature working condition is reduced, and the forming quality is improved.

The utility model relates to a stamping die with a positioning device, and belongs to the technical field of stamping dies. A forming face is arranged between the upper pressing plate and the lower insert and is in a step shape, a fixedly-connected positioning support is arranged on the lower die base, a hinged supporting piece is arranged in the upper end of the positioning support, the supporting piece is flush with the higher side of the forming face, a plurality of fixedly-connected positioners and positioning rods are arranged on the lower pressing plate, and fixing pieces capable of rotating are arranged on the positioners. In the scheme, the metal plate above the lower side of the forming surface slides to the supporting piece, so that the metal plate is kept in a horizontal placement state before being stamped, then the fixing piece on the positioner rotates to firmly press the metal plate, the position of the metal plate is fixed, in the downward pressing process of the upper pressing plate, one side of the metal plate is firstly pressed and does not move, and therefore the metal plate is prevented from moving. The metal plate can be stably placed on the forming face, and defective products caused by movement of the metal plate in the stamping process are avoided.

The utility model discloses a hot-pressing veneer placing jig which comprises a hot-pressing die, a hot-pressing cavity is formed in the hot-pressing die, a hot-pressing male die is arranged in the hot-pressing cavity, and a hot-pressing forming face is arranged on the top of the hot-pressing male die. A wood veneer jig is arranged on the edge of the hot-pressing male die in a surrounding mode, a plurality of wood veneer positioning pieces making contact with wood veneers are arranged at the top of the wood veneer jig, and at least one handle extending to the outside of the hot-pressing die is arranged on one side of the wood veneer jig. According to the wood veneer taking-out device, workers can take out wood veneers safely and efficiently, the workers are prevented from being scalded, and meanwhile the wood veneer taking-out efficiency is improved.

A three-layer heat shield edge covering and flattening die structure comprises an upper die table and a lower die table which are oppositely arranged, the upper side of the lower die table is provided with a lower spring in the vertical direction and a lower floating plate which is connected to the lower spring and can ascend and descend, and the lower side of the upper die table is provided with an upper spring in the vertical direction and an upper floating plate which is connected to the upper spring and can ascend and descend. The lower die table is provided with a lower die base protruding upwards, the upper die table is provided with an upper die base protruding downwards, the upper die base and the lower die base are oppositely arranged, the lower floating plate is provided with a lower through hole allowing the lower die base to penetrate through, and the upper floating plate is provided with an upper through hole allowing the upper die base to penetrate through. The side peripheral wall of the upper through hole is provided with a forming face used for bending a turned edge of a workpiece, and the elastic coefficient of the upper spring is larger than that of the lower spring. According to the scheme, inward bending and downward flattening of the turned edge of the workpiece are achieved through one die tool, efficiency is high, the problem that in the prior art, clamping needs to be conducted again is solved, and the quality of the finished workpiece is stable and reliable.

The invention discloses a hard spot punching die, an aluminum material forging and pressing method and an aluminum material forging and pressing device. The pitting mold comprises a first mold assembly and a second mold assembly which are oppositely arranged. The first die assembly is provided with an upper die pressing block. The second die assembly and the first die assembly are oppositely arranged, the second die assembly comprises a fixed insert and a plurality of angle sliding blocks, and the fixed insert forms a positioning cavity used for containing and positioning an aluminum blank. The multiple angle sliding blocks are arranged around the positioning cavity, each angle sliding block is provided with a forming face facing the positioning cavity, and the forming face is provided with a hard spot protrusion array. The upper mold pressing block is matched with the angle sliding block, the upper mold pressing block is provided with a wedge-shaped surface and is matched with a stress inclined surface on the angle sliding block, and the angle sliding block is driven to be fed in the preset angle direction through relative sliding of the wedge-shaped surface and the stress inclined surface during mold closing, so that at least one surface of the aluminum blank is impressed by the hard spot bulge array to form pits and hard spots.

The preparation mold of the sealing element comprises an upper mold and a lower mold, at least two containing cavities are formed after the upper mold and the lower mold are closed, the upper mold comprises a first forming face, the lower mold comprises a second forming face, at least part of the first forming face forms at least part of the upper wall face of the containing cavity, and at least part of the second forming face forms at least part of the lower wall face of the containing cavity. At least part of the second forming surface forms at least part of the lower wall surface of the accommodating cavity; the containing cavity comprises a first containing cavity body and a second containing cavity body, the first containing cavity body extends in an arch shape, the second containing cavity body is located on the periphery of at least part of the first containing cavity body, and the first containing cavity body is communicated with the second containing cavity body. A certain extension space is reserved between the two different materials, material wrinkles caused by different expansion rates of the materials after temperature rise in the machining process are reduced, and the forming yield of the sealing element can be improved.