28results about How to "Reduce thickness requirements" patented technology

The invention discloses a torque transmission mechanism of a manipulator, which is applied between two adjacent joint centers of the manipulator, and comprises at least a first belt wheel and a second belt wheel which are respectively provided with a peripheral surface; the torque transmission belt comprises at least two layers of stacked transmission belts, at least one layer of transmission belt wraps the side face of the other adjacent layer of transmission belt, and each layer of transmission belt is provided with at least two installation ends. At least two mounting end parts of at least one layer of transmission belt are fixedly connected with two mounting end parts of the other adjacent layer of transmission belt respectively; relatively independent mobility is kept between the at least two layers of transmission belts in a connecting area formed between the mounting ends of the at least two layers of transmission belts. By the adoption of the scheme, it can be guaranteed that the size of the belt wheel in the mechanical arm is smaller to the maximum extent under the condition that the rated torque is met, and occupied space is smaller.

The invention discloses a beta < + >-gamma-gamma coincidence positron annihilation lifetime-momentum correlation spectrometer, and belongs to the technical field of nuclear detection. The spectrometer comprises a positron annihilation life detection module, a positron annihilation gamma photon energy detection module, a signal acquisition module and a control and analysis module, and the positron annihilation life detection module is used for acquiring a life part in an AMOC spectrum; the positron annihilation gamma photon energy detection module is used for acquiring a momentum part in an AMOC spectrum by detecting gamma photons generated by positron annihilation; the signal acquisition module is used for acquiring signals generated by the positron annihilation life detection module and the positron annihilation gamma photon energy detection module; the control and analysis module is used for controlling the signal acquisition module and obtaining an AMOC spectrum based on signals acquired by the signal acquisition module. According to the method, the coincidence counting rate can be effectively improved, good coincidence time resolution and extremely low source components are achieved, and the construction cost of a spectrometer can be reduced.

The utility model relates to the technical field of assembly type structure construction, aims to solve the problems that an existing connection structure of a two-way laminated plate close splicing seam is prone to cracking, large in steel consumption and high in requirement for the thickness of a post-pouring layer, and provides a two-way stress close splicing laminated plate connection structure which comprises a first laminated plate and a second laminated plate. A protrusion is arranged on one side of the first laminated plate, a groove is formed in one side of the second laminated plate, and the protrusion is inserted into the groove. A pre-embedded connecting piece is pre-embedded in the laminated slab I, and one end of the pre-embedded connecting piece extends out of the front end of the bulge; a reserved joint bar pipeline is arranged in the second laminated slab, and the reserved joint bar pipeline is communicated with the groove; the embedded connecting piece is inserted into the reserved joint bar pipeline; a grouting hole is formed in the top surface of the laminated slab II, and is communicated with the reserved joint bar pipeline; a notch is formed in the top of the plate side of the second laminated plate and communicates with the groove. The connection strength between the laminated slabs is large, the laminated slabs are not prone to cracking, the steel consumption is small, and the requirement for the thickness of a post-pouring layer is low.

According to the wafer cutting method provided by the invention, the metal protection layer is formed before the photoetching process, and the basic requirement of the thickness of the metal protection layer is that a photoetching machine can accurately identify and align the Mark in the photoetching process so as to realize accurate alignment. After the photoetching process is completed and the first etching groove is formed, the metal hard mask layer is formed, at the moment, the metal hard mask layer and the metal protection layer serve as a hard mask for follow-up etching, especially a hard mask for etching a silicon substrate together, and due to the fact that the process is only the etching process but not the photoetching process, the etching process is simplified. The thickness of the metal hard mask layer is not limited when a photoetching machine recognizes and aligns the Mark, so that the metal hard mask layer can provide sufficient thickness to meet the requirement for the thickness of the hard mask during etching, in addition, parameters such as the thickness and the material of the metal hard mask layer can be designed according to different product specification requirements, and the manufacturing cost is reduced. A more flexible hard mask structure is provided for the wafer cutting process, and the application range is wide.

The embodiment of the invention provides a preparation method of a semiconductor device, the semiconductor device and a memory system. The method comprises the steps that a semiconductor structure is provided, the semiconductor structure comprises a stacking structure, a contact connecting part penetrating through the stacking structure and a grid line gap structure, and the grid line gap structure is provided with a protruding part protruding out of the stacking structure in the stacking direction of the stacking structure; the semiconductor structure further comprises a semiconductor layer covering the stacking structure, the contact connection part and the protruding part of the grid line gap structure. Removing at least a portion of the semiconductor layer to expose the contact connection portion and the protrusion portion; at least one part of the protruding part is removed; and forming a dielectric layer covering the semiconductor layer, the contact connection part and the grid line gap structure.

The utility model discloses a magnetic attraction wireless charger which comprises a charging seat, a hinge and a support, the front face of the charging seat is provided with a charging position, the charging seat is provided with a charging circuit, a wireless charging coil and a magnetic attraction structure, the wireless charging coil is connected with the charging circuit, and the wireless charging coil is connected with the magnetic attraction structure. The wireless charging coil and the magnetic attraction structure are arranged corresponding to the charging position. The hinge comprises two connecting plates which are hinged to each other, the rotating axis of the hinge is parallel to the two connecting plates, the hinge has a closed state in which the two connecting plates are closed, and one connecting plate is fixed on the back surface of the charging seat; the support is fixed to the other connecting plate of the hinge, and when the hinge is in the closed state, the support is overlapped on the back face of the charging base. According to the technical scheme of the utility model, the thickness of the magnetic attraction wireless charger can be reduced, the magnetic attraction wireless charger is integrally light and thin, and the convenience is improved.

The utility model belongs to the field of tower drum transportation, and discloses a split type wind power tower drum loading and transporting tool which comprises a base installed on a transporting vehicle and a supporting assembly installed on the base and used for fixing a tower drum. The supporting assembly comprises a supporting plate and at least one positioning piece arranged on the front face of the supporting plate. Supporting arms extending out of the top plane of the supporting plate are arranged at the two ends of the supporting plate, and a plurality of fixing holes connected with a tower drum flange through bolts are formed in the supporting arms. The positioning piece comprises a locking seat welded to the front face of the supporting plate, a locking pin arranged on the side face of the locking seat and a positioning pin arranged at the bottom of the locking seat, the locking seat is provided with an insertion hole matched with the positioning pin, and the positioning pin is provided with a limiting groove connected with the locking pin in an inserted mode; the two supporting assemblies are connected in an inserted mode through the positioning pins and the locking seats to be connected in a stacked mode. The tower drum transport vehicle is simple in structure and reasonable in design, a plurality of tower drums can be stacked on the transport vehicle, and the stability of the tower drums can be guaranteed.

The present application relates to plate processing equipment technical field, specifically to a kind of self-adapting type plate linear edge banding system, including the edge banding machine main body being provided with defoaming unit, defoaming unit is used to prevent edge banding tape to fall off, defoaming unit includes cavity, cylinder, clamping plate, motor and connecting rubber membrane, cylinder is installed on edge banding machine main body can drive cavity to move, cavity is opened with the air pipe being connected with vacuumizing equipment on, clamping plate is respectively arranged in the upper and lower sides of cavity, clamping plate is used to clamp plate and clamping plate and cavity constitute the moving pair in vertical direction, motor is set in the rear side of cavity and is driven clamping plate by swing arm with roller, connecting rubber membrane is connected with the rear side of clamping plate located in the different sides of cavity, one end of air pipe is communicated with connecting rubber membrane, it can be self-adapting different thickness plate without frequently replacing adapter, while eliminating air bubble can make hot melt adhesive form invasive interface in plate edge, help to improve the bonding strength of edge banding tape and plate and avoid peeling.

The utility model discloses a ventilation and noise reduction embedded power supply distribution box, which comprises a box body embedded into a wall body, the lower end part of a panel of the box body is provided with an air inlet, the upper end part of the panel of the box body is provided with an air outlet, the air outlet and the air inlet are respectively provided with a sound absorption shutter, and an inner cavity of the box body is respectively provided with a first mounting plate and a second mounting plate. The first mounting plate is located at the air inlet, and a gap is reserved between the first mounting plate and the inner side of the bottom plate of the box body to form an air inlet silencing cavity; the second mounting plate is located at the air outlet, and a gap is reserved between the second mounting plate and the inner side of the top plate of the box body to form an exhaust silencing cavity; ventilation holes are formed in the first mounting plate and the second mounting plate, an exhaust fan is mounted on the ventilation hole of the second mounting plate, so that the exhaust silencing cavity and the air inlet silencing cavity are respectively communicated with the inner cavity of the box body, and flame-retardant sound-absorbing materials are arranged on the inner side walls of the exhaust silencing cavity and the air inlet silencing cavity. The power distribution box is simple in structure, ensures cooling of electrical components in the box body, and reduces noise.

This invention relates to the field of kitchen appliance technology, specifically disclosing an impeller, a fan, and a range hood. The impeller includes a central disc, blades, and reinforcing ribs. Both the blades and reinforcing ribs are disposed in the central disc, with the reinforcing ribs positioned closer to the center of the central disc than the blades. The reinforcing ribs include interconnected vertical ribs and deflecting ribs, with the deflecting ribs offset from the vertical ribs in a direction opposite to the impeller's rotation direction. The reinforcing ribs enhance the structural strength of the central disc, thereby reducing the required thickness. By offsetting the deflecting ribs relative to the vertical ribs in a direction opposite to the impeller's rotation direction, the rotational action of the blades aligns with the force direction of the deflecting ribs, ensuring the reliability of the deflecting ribs and further enhancing the structural strength of the central disc. This effectively reduces the required thickness of the central disc, thereby reducing material usage and lowering costs. It also reduces the weight of the central disc, improving the efficiency of the motor-driven impeller in extracting and exhausting fumes.

The invention relates to the technical field of aviation, and particularly provides a foldable / unfoldable triangular fixed wing with a hybrid structure and an aircraft comprising the wing. The triangular wing supporting framework comprises a sliding rail, a wing leading edge beam, a wing trailing edge beam and a wing trailing edge beam sliding hinge assembly, and further comprises a skin stabilizing rib, and when the wing supporting framework is unfolded to the maximum wingspan, the skin stabilizing rib is limited and locked by the rotating sleeve connecting assembly. The number of rod pieces of the wing supporting framework structure is greatly reduced, the wing lift force is mainly generated by the inflatable skin, and therefore the wing structure is simple, and the weight of the wing is light.

The utility model discloses an energy-saving type ground air supply fresh air conditioning system which comprises a main machine and a ground air supply pipeline and is provided with an outer wall heat preservation layer, the ground air supply pipeline is communicated with an air supply duct of the main machine, an air pipe heat preservation layer is arranged outside the ground air supply pipeline and is made of aerogel composite materials, and the outer wall heat preservation layer comprises an aerogel coating. Comprehensive heat preservation measures are provided, heat loss is reduced, and the ground air supply fresh air conditioning system is more energy-saving. Specifically, an aerogel composite material is used as an air pipe heat preservation layer, the heat preservation performance of an underground air supply pipeline is improved on the premise that the requirement for the thickness of a terrace is reduced, an outer wall body is provided with an outer wall heat preservation layer containing an aerogel coating, and the overall heat preservation performance of indoor space is greatly improved; and the energy-saving performance of the underground air supply fresh air conditioning system is improved.

A dehumidifier, which comprises a casing, a refrigeration system and a water tank; the casing is internally provided with a containing space, the top surface of the casing is downwardly extended to be provided with a receiving cavity, the receiving cavity is arranged above the containing space, the refrigeration system is arranged in the containing space, and the refrigeration system comprises a compressor, a condenser and an evaporator; the water tank is upwardly and downwardly arranged in the receiving cavity; the water tank comprises a tank body, a handle and a handle, the inside of the tank body is provided with a water storage cavity; a tank cover is arranged on the top surface of the tank body and covers the top of the water storage cavity; the handle is arranged on the tank cover; a gap area is arranged on the tank cover, and the handle is upwardly and downwardly arranged in the gap area; the upper end of the handle is exposed on the top surface of the tank cover, and the lower end of the handle is arranged in the water storage cavity. The water tank is upwardly and downwardly arranged in the receiving cavity of the casing, so that the problem that the user needs to squat to take the water tank in the related dehumidifier can be solved. The handle of the water tank can be upwardly and downwardly lifted, so that the overall occupied space of the dehumidifier is reduced.

The invention discloses a photoelectric synapse transistor with wide spectral response and a manufacturing method thereof, and mainly solves the problems that the conductivity and the response rate of the existing photoelectric synapse transistor are difficult to linearly regulate and control at the same time and the light response wave band is narrow. The device comprises a substrate layer, an ultraviolet light channel layer, a source electrode, a drain electrode, a visible light channel layer and a grid electrode from bottom to top, and a ferroelectric medium layer is arranged on the upper portion of the visible light channel layer and used for changing the polarization state to change the doping state of the visible light channel layer, so that the device has multiple working states; the grid electrode is located on the ferroelectric dielectric layer in parallel so as to regulate and control the polarization state of the ferroelectric dielectric layer; the source electrode and the drain electrode are located between the ultraviolet light channel layer and the visible light channel layer. When the visible light irradiates the visible light channel layer or the ultraviolet light irradiates the ultraviolet light channel layer, the light signal is responded and the light current is transmitted. The photosynaptic transistor can widen the photoresponse wave band of the photosynaptic transistor, realizes linear regulation and control of the conductivity and the response rate of the device, and can be used for a photoelectric detector and a neural calculator.

The invention discloses a rear suspension mounting structure and a vehicle, and the rear suspension mounting structure comprises a rear suspension outer plate assembly which is provided with a rear suspension mounting hole; the rear suspension inner plate is arranged on one side of the rear suspension outer plate assembly, a rear suspension nut sleeve assembly is arranged between the rear suspension inner plate and the rear suspension outer plate assembly, the rear suspension nut sleeve assembly and the rear suspension mounting holes are arranged in a one-to-one correspondence mode, and a first cavity is formed between the rear suspension inner plate and the rear suspension outer plate assembly; the mounting directions of the at least two rear suspension nut sleeve assemblies are perpendicular to each other; the rear wall lower reinforcing beam is arranged on the side, back to the rear suspension outer plate assembly, of the rear suspension inner plate and covers the two rear suspension nut sleeve assemblies located on the upper portion, and a second cavity is formed between the rear wall lower reinforcing beam and the rear suspension inner plate. The two cavity structures are arranged at the mounting position, so that the whole rear suspension mounting structure is of a box body structure, the requirement for the thickness of a plate is not high on the premise that the requirement for dynamic stiffness is met, and therefore the vehicle weight can be reduced, and the requirement for light weight of the vehicle is met.

The ultra-thin ceiling lamp comprises a lamp strip, a light guide structure, a heat dissipation piece, a base and a face cover, the heat dissipation piece comprises a heat dissipation body and a heat dissipation part, the heat dissipation part is connected to the outer side of the heat dissipation body, the face cover is connected with the base, the heat dissipation piece is connected with the base, the face cover is provided with an opening, and the light guide structure is arranged in the opening. The surface cover covers the heat dissipation part, the heat dissipation main body is exposed from the opening, the heat dissipation main body is provided with a through hole, the light guide structure is embedded in the through hole, and the lamp strip is connected to the side wall of the through hole and is opposite to the light guide structure. According to the LED lamp, the lamp strip is arranged in the through hole of the heat dissipation piece, the thickness requirement of the LED lamp can be effectively reduced, the attractiveness of the LED lamp is improved, the LED lamp is suitable for installation scenes, practicability is guaranteed, the heat dissipation body is exposed out of the opening, the heat dissipation body can make direct contact with the atmosphere, and the service life of the LED lamp is prolonged. Therefore, the heat of the heat dissipation piece can be effectively dissipated into the atmosphere, and the heat dissipation effect can be further improved.

The self-heating pajamas comprise a pajamas body, the back of the pajamas body comprises a cotton clamping layer and a thin flannelette layer which are arranged in a spaced mode, the cotton clamping layer is located on the outer side, a heating cavity is formed between the cotton clamping layer and the thin flannelette layer, and a massage plate and a self-heating piece which are detachably connected are arranged in the heating cavity. The massage plate is located at the top of the heating cavity, a plurality of rope penetrating through holes communicated with the heating cavity are formed in the shoulders of the clothes body, a plurality of connecting ropes are arranged at the top of the massage plate, the free ends of the connecting ropes penetrate through the rope penetrating through holes to extend out of the heating cavity, and a plurality of massage protrusions are arranged on the massage plate. According to the pajamas, the massage plates are arranged at the positions close to the shoulders and the neck, a wearer can achieve the massage effect by squeezing and leaning against the massage plates, meanwhile, the self-heating pieces can provide the heating effect, the heat preservation performance of the pajamas is improved, the self-heating pieces can be replaced at any time, the heat preservation effect of the pajamas is guaranteed, the requirement for the thickness of the cotton clamping layer is lowered, and the wearing experience of the pajamas is improved.

The application provides a display panel and a display device, and relates to the display field, and is used for preventing peep display performance. The display panel comprises a display area and a non-display area surrounding the display area, a substrate, a display layer located on one side of the substrate and comprising a pixel area and a non-pixel area, wherein the pixel area comprises a sub-pixel, an encapsulation layer located on the side, away from the substrate, of the display layer, a filter layer located on the side, away from the substrate, of the encapsulation layer and comprising a filter part and a light shielding part, wherein the filter part overlaps the pixel area in the direction perpendicular to the plane where the substrate is located, and the light shielding part overlaps the non-pixel area, at least one blocking layer located on the side, away from the substrate, of the filter layer, wherein the blocking layer has an opening, the opening overlaps the pixel area in the direction perpendicular to the plane where the substrate is located, and the blocking layer overlaps the non-pixel area, and a first planar layer located between the display layer and the blocking layer and covering the display area.

This utility model discloses a foundation pit inclined bracing support structure utilizing the undisturbed soil beneath a basement floor slab, comprising support piles, a water-stop curtain, a capping beam, reaction piers, and inclined braces. The support piles are spaced apart around the perimeter of the foundation pit; the water-stop curtain is located outside the support piles; the capping beam connects along its length to the tops of the rows of support piles; the reaction piers are made of reinforced concrete or plain concrete and are located in the undisturbed soil beneath the basement floor slab; both ends of the inclined braces are pre-embedded in the reaction piers and the capping beam, respectively. This structure utilizes the undisturbed soil instead of the basement floor slab to bear the horizontal reaction force, reducing the thickness requirement of the basement floor slab and allowing for single-stage casting of the basement floor slab, thus saving costs and construction time.

The reflecting mirror comprises a main body, the main body is a paraboloid with a focal point, a reflecting surface is formed on one side of the main body, an aluminum layer is formed on the reflecting surface, the main body is composed of a plurality of reflecting units, and the reflecting units are arranged on the reflecting surface. A plurality of rhombic light spots can be formed after the light is reflected by the plurality of light reflecting units, the light reflecting units are paraboloids with focuses, the focuses of the plurality of light reflecting units and the focus of the main body share the same point, and the light reflecting device has the advantages of improving the optical efficiency and reducing the required space.

The embodiment of the invention provides a micro-textured surface preparation method of a silicon wafer, a silicon wafer solar cell and a photovoltaic module. The preparation method of the micro textured surface of the silicon wafer comprises the following steps: providing the silicon wafer with a textured surface; putting the silicon wafer into a hydrogen peroxide solution so as to carry out first treatment on the textured surface of the silicon wafer; putting the silicon wafer after the first treatment into a first alkaline solution so as to etch the textured surface; and taking out the silicon wafer under the condition that the etching time reaches a preset time range to obtain the silicon wafer with the micro textured surface. According to the technical scheme provided by the embodiment of the invention, the silicon wafer after the first treatment is put into the first alkaline solution, and incomplete etching is carried out, so that the silicon wafer with the micro-textured surface is prepared. The step of polishing the textured surface before manufacturing the micro textured surface is avoided, the requirement for the thickness of the silicon wafer is lowered, and the speed of manufacturing the micro textured surface is increased.

The utility model provides a rim structure, a wheel set and a bicycle, the rim structure comprises a rim body with an annular structure, and the rim body comprises an inner ring wall, an outer ring wall and a connecting side wall; the inner ring wall comprises a left inclined face and a right inclined face, connecting holes are formed in the left inclined face and the right inclined face at intervals, and the connecting holes in the inclined faces on the two sides are distributed in a staggered mode. The structure of the wheel rim body and the positions of the connecting holes are reasonably arranged, the connecting holes accord with the angles from the spokes to the wheel rim and from the spokes to a hub, the spokes are smoothly connected with the wheel rim and the hub, the spokes can provide direct and effective supporting strength when the wheel rim bears impact force in the using process, and the service life of the wheel rim is prolonged. The spokes cannot be broken off due to the fact that the spokes bear impact force due to corners. The distance between the connecting holes distributed on the two inclined planes in a staggered mode is larger, a larger operation space can be formed, wrench operation in the wheel assembling process is facilitated, assembling operation of a small-wheel-diameter wheel rim is facilitated, the overall strength of the wheel rim is improved, and light weight of the wheel rim is facilitated.

This application relates to the field of vehicle body technology and provides a door structure and a vehicle. The door structure of this application includes an outer door panel and an inner door panel connected and forming a cavity, as well as an outer panel support plate and a crash beam disposed within the cavity. The outer panel support plate extends along the edge of the outer door panel at the window sill position, and the crash beam is spliced ​​to the bottom of the outer panel support plate, extending along the lower edge of the outer panel support plate. The door structure of this application can improve the continuity and stability of the door structure and enhance the support performance of the outer panel, thereby improving the structural strength of the door, dispersing the impact force during a collision, reducing the risk of door deformation, and reducing injury to occupants during a collision, thus contributing to improved vehicle safety.

The invention belongs to the field of pedestrian steel bridges, and particularly relates to a multi-layer composite pedestrian steel bridge pavement structure and a construction method. The multi-layer composite pedestrian steel bridge pavement structure comprises a base layer, an anti-rust layer, a waterproof bonding layer, gravel particles, a pavement structure layer, a permeation sealing layer, an anti-skid layer and a stain-resistant surface layer which are sequentially arranged from bottom to top. The base layer is a steel plate; the anti-rust layer is an epoxy zinc-rich primer coating; the waterproof bonding layer is an epoxy resin coating; the pavement structure layer is a flexible asphalt layer; the permeation sealing layer is an epoxy modified polyurethane resin coating; the anti-skid layer is an acrylic acid modified polyurethane resin coating with a rough surface; and the stain-resistant surface layer is a transparent polyurethane coating. The pavement structure of the pedestrian steel bridge, provided by the invention, has good weather resistance, attractive appearance and walking comfort, and is light in self weight and convenient to construct.

The invention discloses a fabricated light steel structure arc-shaped sill explosion door and a mounting method, the fabricated light steel structure arc-shaped sill explosion door comprises a door frame fixedly mounted on a building wall and a door leaf mounted on the door frame, and an arc-shaped sill is arranged at the bottom of the door frame; the door leaf comprises a steel framework, a front shell and a rear shell, and a door leaf sealing piece is installed at the bottom of the door leaf. A locking component is installed on a door leaf and comprises a main locking assembly, an upper driven locking assembly and a lower driven locking assembly, the upper driven locking assembly and the lower driven locking assembly are arranged at the upper end and the lower end of the main locking assembly, a handle is installed on the main locking assembly, and the upper driven locking assembly is connected with the main locking assembly through a first connecting rod. The lower driven locking assembly is connected with the main locking assembly through a second connecting rod. The explosion-proof door has the advantages of light structure, strong stability and high production efficiency, is convenient to install and construct, is convenient for vehicles to pass through in an open state, has various locking states in a closed state, can realize locking by only needing one handle to realize multi-mode conversion of flat, urgent and battle, and is simple to operate.

The invention discloses a power takeoff supporting shell containing a split type oil duct, belongs to a power takeoff supporting shell, and solves the problems that in an existing power takeoff supporting shell, an oil way is formed in the shell, machining of the oil way in the shell through a conventional lathe and a numerical control machine tool becomes very difficult, and the machining cost is low. The hydraulic power takeoff supporting structure comprises a right power takeoff supporting shell, a left power takeoff supporting shell and a supporting seat, oil channels are formed in the surface of the right power takeoff supporting shell and the surface of the left power takeoff supporting shell, and the process difficulty is reduced by reasonably arranging the oil channels.

The present invention provides a head forming mold and a head forming method, which are implemented through the head forming mold. The head forming mold includes a male mold, a first edge pressing mold and a second edge pressing mold. The first edge pressing mold is arranged around the outer side of the circumference of the male mold, and the second edge pressing mold is arranged corresponding to the first edge pressing mold; the first edge pressing mold moves toward the second edge pressing mold to press the plate between the first edge pressing mold and the second edge pressing mold; during the pressing and forming process, the pressure of the first edge pressing mold on the plate is reduced. By reducing the pressure of the first edge pressing mold on the plate during the pressing and forming of the plate by the male mold, that is, reducing the clamping pressure of the first edge pressing mold and the second edge pressing mold on the plate, the plate material between the first edge pressing mold and the second edge pressing mold moves toward the male mold / mold cavity, thereby slowing down the speed of local stretching and thinning, so that the thickness of the formed head is more uniform. Therefore, on the basis of meeting the minimum thickness of each part of the head, the thickness of the plate material is reduced, and the cost of raw materials is reduced.