253 results about "Metal injection molding" patented technology

The invention relates to the technical field of metal injection molding, in particular to a method for detecting uniformity of metal powder injection molding feed, which comprises the following specific steps: randomly extracting a plurality of samples from the same batch of metal powder injection molding feed at different positions, weighing a plurality of groups of samples from each sample, recording the weight of each group of samples as m1, and recording data, the apparent weight of each group of samples is obtained through a density meter and an electronic balance by utilizing a drainage method and is recorded as m2, data is recorded, the volume and density of the samples are calculated, then the standard deviation of the density of the samples is calculated according to a sample standard deviation calculation formula, then a variable coefficient is calculated, and the feeding uniformity is evaluated according to the variable coefficient. The method is simple in process, convenient to operate and short in consumed time, the uniformity of the feed is evaluated through sampling, weighing and density calculation, the uniformity of the metal powder injection molding feed can be visually and quantitatively detected, and the method is suitable for detecting the uniformity of the metal powder injection molding feed.

The invention relates to the technical field of sintering furnaces, and discloses an efficient metal injection molding vacuum degreasing sintering furnace which comprises a sintering furnace frame body, a furnace body is fixedly connected to the interior of the sintering furnace frame body, a furnace door is hinged to the open end of the furnace body, and a heating frame is arranged in the furnace body; a forming assembly used for sintering metal powder and adhesive mixtures injected into a mold cavity of the mold is arranged in the heating frame, and a vacuumizing assembly used for extracting air in the sintering furnace body is arranged on one side of the sintering furnace frame body. By arranging the detachable forming assembly and the forming mold, metal subjected to sintering forming can be conveniently replaced, the sintering position is constant, and it is effectively guaranteed that the quality of metal sintering blanks of the same batch is uniform; therefore, the air velocity in the heat conduction copper pipe is effectively improved, and the heat dissipation efficiency of inert gas in the conical shell is further improved through the heat conduction copper pipe.

The invention belongs to the technical field of steel materials, and particularly relates to powder for metal injection molding, electronic equipment, a steel structural part and a preparation method of the powder for metal injection molding, and the powder for metal injection molding comprises the following elements of, by weight, 16.01%-16.99% of Co, 7.31%-8.40% of Cr, 5.65%-6.65% of Mo, 7.01%-7.99% of Ni and 0.20%-0.40% of Nb. And the weight percentage of Fe is greater than or equal to 59.57%. By the adoption of the powder for metal injection molding, preparation of a high-strength and high-toughness steel structural part with the yield strength not lower than 2000 MPa and the elongation not lower than 5% can be achieved.

A preparation method for a titanium alloy material, which preparation method relates to the field of powder injection molding. The preparation method comprises the following steps: S1, preparing a titanium alloy fine powder and a titanium alloy coarse powder, wherein the particle size of the titanium alloy fine powder is in the range of 1-20 μm, and the particle size of the titanium alloy coarse powder is in the range of 50-100 μm; mixing the titanium alloy fine powder and the titanium alloy coarse powder to form a titanium alloy mixed powder, wherein the proportion of the titanium alloy coarse powder in the titanium alloy mixed powder is 50% or above; S2, mixing the titanium alloy mixed powder and a binder to prepare a feed; S3, placing the feed in an injection molding machine, and subjecting the feed to injection molding by means of a mold to form an injection blank; S4, degreasing the injection blank to obtain a degreased blank; and S5, subjecting the degreased blank to high-vacuum sintering to obtain a sintered blank. By mixing the 50-100 μm titanium alloy coarse powder and the 1-20 μm titanium alloy fine powder according to different proportions, part of the titanium alloy coarse powder is used for replacing the titanium alloy fine powder, to reduce the amount of the titanium alloy fine powder, thereby reducing the cost of the titanium alloy powder for metal injection molding.

The invention provides a high-performance neodymium-iron-boron magnet formed by MIM (metal injection molding), which comprises the following components in percentage by weight: 28 to 38 weight percent of Re, 4 to 5 weight percent of FeB, 0.05 to 0.2 weight percent of Cu, 0 to 0.15 weight percent of Al, 0.15 to 0.3 weight percent of Ga, 0.2 to 1.5 weight percent of Co, 0.15 to 0.2 weight percent of Zr and the balance of iron and other inevitable impurities, the MIM injection molding process is carried out under the protection of nitrogen, the position of an extrusion material rod opening and the interior of a mold cavity are both under the protection of inert gas, and the extrusion material rod opening and the mold cavity are sealed. Meanwhile, a mold core is in a pulsed magnetic field environment in the injection molding process, it is guaranteed that the magnet has a proper neodymium-rich phase by regulating the rare earth content to be 28-38%, and therefore the coercive force of the magnet is improved, the compactness of the magnet is improved, the production cost is reduced, and through the optimized jet milling technology, the particle size and particle size distribution of neodymium-iron-boron powder are controlled, so that the yield of neodymium-iron-boron powder is improved. And meanwhile, the proportions of the magnetic powder with different particle sizes are adjusted through the sorting wheel, so that gap coating of the pre-coating solute is facilitated, and the injection molding density of the MIM neodymium iron boron is improved.

The invention discloses surface-modified metal powder and application thereof in MIM (metal injection molding), belongs to the technical field of metal injection molding, and aims to solve the problems of low density and strength of an injection blank due to an intermolecular acting force difference between the metal powder and a binding agent in the MIM metal injection molding process in the prior art, and high product quality. And the size change rate of the material in the high-temperature degreasing process is high. The preparation method comprises the following steps: adding a modifier and acetone into a reaction kettle, stirring until a system is dissolved, adding activated metal powder into the reaction kettle, carrying out secondary coating on the metal powder to form surface modified metal powder with double-layer coating, and enabling the metal powder to be uniform in thickness in the MIM injection molding process. The polymer can be arranged and combined more tightly, the density and strength of an injection blank are improved, and the dimensional stability of a final product is improved by optimizing the composition of the mixed polymer.

The invention relates to the technical field of metal injection molding, and discloses a process for preparing an ultrahigh-toughness MIM part through integration of multistage degreasing and gradient sintering, and the process comprises the following steps: metal powder and a binder are mixed in proportion, and uniform feed is obtained after banburying and granulation; injection-molding the feedstock into a green body; the green body is sequentially subjected to catalytic degreasing and stepped thermal degreasing, the catalytic degreasing is carried out in a nitric acid-containing atmosphere, and the thermal degreasing is carried out in a multi-stage heating procedure under the protection of inert gas; and carrying out multi-stage gradient sintering on the degreased green body in a vacuum or inert atmosphere, wherein the multi-stage gradient sintering comprises low-temperature pre-sintering, medium-temperature deoxidization and decarbonization and high-temperature densification sintering. According to the invention, through organic combination of multi-stage catalytic degreasing and stepped thermal degreasing, efficient and thorough removal of the binder is realized, carbon residues, bubbles and internal defects caused by incomplete degreasing are effectively avoided, and the quality of the green body and the structural integrity before sintering are improved.

The invention discloses a low-cost high-polishing titanium alloy plug housing injection molding method, and belongs to the technical field of metal injection molding. The method comprises the following steps: powder preparation, raw material weighing, internal mixing, granulation, injection molding, acid degreasing, thermal degreasing and vacuum sintering, and polishing. Titanium alloy powder used in the method is composite powder formed by adding 0-50 [mu] m non-spherical powder into 0-60 [mu] m spherical powder prepared through a plasma atomization method (PDPA). The cost of the non-spherical titanium powder is far lower than that of spherical titanium powder, and the production cost is relatively reduced by more than 80%; the 0-60 [mu] m spherical powder prepared by the plasma atomization method is high in powder permeability, and sintering densification is facilitated; the sintering shrinkage coefficient of the porous titanium alloy part with the complex shape prepared through vacuum sintering is accurately controlled to be 1.20-1.350, and extra shaping matched equipment is not needed; according to the high-polishing titanium alloy product part manufactured through the method, the density is larger than or equal to 4.45 g / cm < 3 >, the tensile strength is larger than or equal to 950 MPa, the elongation after fracture is larger than or equal to 12%, and the hardness is larger than or equal to 350 (HV).

The invention discloses a binder removal device for metal injection molding, relates to the technical field of metal injection molding, and aims to solve the technical problem that the binder removal device for metal powder injection molding is uneven in heating when used for removing a binder from a columnar workpiece, the binder removal device comprises a degreasing furnace body, and a rack is arranged in the degreasing furnace body in a sliding manner; a planetary rotating mechanism is arranged at the head end of the rack, and a placing mechanism is arranged at the tail end of the rack. According to the invention, the planetary rotating mechanism is arranged to drive the plurality of placing mechanisms to rotate, so that when the columnar workpieces subjected to metal powder injection molding are subjected to binder removal, the positions of all the columnar workpieces are changed along with the movement of the placing mechanisms, the uniform heating of the columnar workpieces is facilitated, and the technical field of metal injection molding is solved; the technical problem that heating is uneven when a columnar workpiece is subjected to binder removal through a binder removal device for metal powder injection molding is solved.

A high-precision metal injection molding mechanism and method. The use of a connection and driving mode that "two ends of an integrated piston and piston rod are respectively connected to a feed screw and a material storage driving assembly, and the material storage driving assembly provides motion power" can reduce the length of the piston and the feed screw while ensuring a large material storage capacity, so that the strength is improved, and the stability of the mechanism is improved, thereby improving the injection precision. In addition, high-frequency response servo valves are respectively arranged on the oil inlet side and the oil outlet side of an injection oil cylinder for double-response control; in addition to controlling the injection speed by means of quick response-based valve opening adjustment on the oil outlet side, the injection speed of the piston is also controlled by controlling the oil inlet amount by means of quick response-based valve opening adjustment on the oil inlet side, achieving multi-stage control of the injection speed.

The invention discloses a preparation method of a high-strength and high-plasticity titanium alloy, which comprises the following steps: weighing spherical TC4 powder and irregular TiH2 powder according to the ratio of (11: 1)-(7: 1); tC4 powder, TiH2 powder and a binder are mixed together; putting the mixed feed into a granulator for extrusion granulation to obtain a granular injection feed; putting the granular injection feed into an injection stock bin, and injecting into a mold to obtain a TC4 green body; the TC4 green body is subjected to degreasing treatment; and the TC4 degreased blank is sintered and cooled along with a furnace, and a TC4 sintered part is obtained. According to the method, a certain proportion of irregular TiH2 powder is doped in spherical TC4 powder, the titanium alloy is manufactured through the metal injection molding technology, and by means of the fact that the TiH2 powder is prone to generating the phase change process from TiH2 to alpha + H2 under the high-temperature condition, the Ti-Ti bond of H in the titanium alloy is weakened, the atomic diffusion rate is increased, TC4 crystal grains are broken, full-dense sintering is promoted, and the titanium alloy is obtained. And therefore, the density of the titanium alloy material is improved, and a titanium alloy product obtains high strength and high plasticity and toughness.

The invention discloses an integral forming process of a square shaft rocker arm, which comprises the following steps: mixing metal powder and an organic binder according to an accurate proportion, and heating and stirring to form uniform feed; preparing the uniformly mixed feed into granules; a corresponding mold is designed according to the shape and size of the square shaft rocker arm; feeding the granular feed into an injection molding machine, injecting the granular feed into a preset mold under high-temperature and high-pressure conditions, and gradually removing the binder in the green body through a thermal degreasing method; putting into a high-temperature sintering furnace, and heating to a high temperature below a metal melting point in vacuum, so that metal particles are fused to form a compact structure; quenching, tempering and other processes are conducted on the sintered square shaft rocker arm, and electroplating treatment is conducted on the surface of the square shaft rocker arm; the method has the beneficial effects that the compactness and the mechanical property of the product are remarkably improved by utilizing a metal injection molding technology, and the service life of the product is far beyond that of a conventional part.

The invention provides a polyformaldehyde-based metal injection molding feed as well as a preparation method and application thereof, and the polyformaldehyde-based metal injection molding feed comprises the following components in percentage by mass: 87-97% of metal powder and 3-13% of a binder, the metal powder comprises tungsten powder; the tungsten powder comprises first tungsten powder and second tungsten powder; the average particle size of the first tungsten powder is larger than that of the second tungsten powder; the binder comprises polyformaldehyde, a skeleton unit and a formaldehyde inhibitor. In the invention, the polyformaldehyde-based metal injection molding feed has good fluidity, stability and sintering performance, can be recycled for multiple times, is beneficial to improving the strength and degreasing efficiency of an injection blank, can reduce the production cost and energy consumption, and can obtain a product with better performance.

A peristaltic pump, specifically for pumping fluid in an extracorporeal blood treatment apparatus, includes a pump housing that accommodates a rotor rotatable about a rotor axis and a squeeze element. The pump housing includes a support surface extending in a curved shape around the rotor axis and being radially spaced from the rotor. The support surface can support a tube segment that inserted radially between the rotor and support surface. The rotor supports the squeeze element via a rocker mounted on the rotor in a pivotable and cushioned manner. The rocker supports an insertion aid by which the tube segment can be pressed into the pump bed, and tube guide elements by which the tube segment is centrally alignable to the squeeze element. The rocker is made from high-strength stainless steel with high chemical resistance and manufactured by powder injection molding, such as metal injection molding.

The invention relates to the field of powder injection molding materials, in particular to a metal injection molding aluminum-containing stainless steel material and a preparation technology, and the stainless steel material comprises the following components in percentage by mass: 6-8 wt% of Ni, 15-18 wt% of Cr, 0.5-2.5 wt% of Al and 1t of C; 0.2 wt%, and the O content is lt; the low-carbon and low-oxygen metal powder is obtained through vacuum gas atomization, the metal powder is formed through the injection molding process and then is degreased through organic oxalic acid, hydrogen is adopted in the whole process of the thermal degreasing stage, and the low-carbon and low-oxygen metal powder is obtained through the gas atomization powder preparation process, so that the low-carbon and low-oxygen metal powder is obtained. The aluminum-containing stainless steel material which is low in carbon, low in oxygen, high in compactness, high in strength, high in corrosion resistance and high in high-temperature creep resistance is obtained through the processes of heat treatment, rapid heating and heat preservation, and the C content of the stainless steel material prepared through the preparation process is 1t after heat treatment; 0.2 wt%, oxygen content lt; the 0.2 wt% structure is compact, the sintering density is high, and the normal-temperature and high-temperature mechanical strength is higher than that of conventional materials such as 304L, 316L and 17-4PH.

The invention discloses a surface-modified metal powder and application thereof in MIM metal injection molding, belongs to the technical field of metal injection molding, and is used to solve the problems in the prior art that the intermolecular force between the metal powder and the binder is poor, resulting in low density and strength of the injection blank, and high dimensional change rate of the material during high-temperature degreasing. The invention is processed by the following steps: adding a modifier and acetone into a reactor and stirring until the system is dissolved, adding activated metal powder into the reactor, and performing secondary coating on the metal powder to form a surface-modified metal powder with a double-layer coating, so that the metal powder can be arranged and combined more closely during the MIM injection molding process, thereby improving the density and strength of the injection blank, and improving the dimensional stability of the final product by optimizing the composition of the mixed polymer.

The invention provides an outer-rigid inner-soft metal injection molding aluminum alloy product and a preparation method thereof.The product comprises an inner layer structure and an outer layer structure which are connected together, the inner layer structure is made of aluminum alloy, and the outer layer structure is made of a composite material of the aluminum alloy and a reinforcing phase; the aluminum alloy in the inner-layer structure and the aluminum alloy in the outer-layer structure are the same in component. The whole product has the characteristics of being rigid outside and soft inside, so that the outer surface of the product has the advantages of high hardness and collision prevention, and meanwhile, the inner surface can be subjected to common machining.

The invention belongs to the technical field of metal powder injection, and particularly discloses metal injection molding machining equipment which comprises a mounting frame and an injection machine body arranged in the mounting frame, and the injection machine body comprises a fixedly-arranged injection cylinder pipe and an injection nozzle arranged at the front end of the injection cylinder pipe. The injection cooling parallel assembly is arranged in front of the injection machine body; and the multi-axis ball screw is used for driving the two groups of mold locking and demolding assemblies to translate. The independent pressure maintaining and cooling unit is additionally arranged, and the mold translation mechanism is utilized, so that the two pairs of molds achieve alternate parallel operation between the injection unit and the pressure maintaining and cooling unit, and the molds are separated from the nozzle and moved to a pressure maintaining station after injection is completed; the pouring system aggregate cut off during separation is used for subsequent pressure-maintaining compensation filling by the pressure-maintaining unit, so that the pressure-maintaining cooling procedure which consumes long time is independent, and the single forming period is greatly shortened.

The invention provides a beryllium-titanium alloy injection molding feed and a preparation method thereof, and relates to the technical field of metal injection molding. The beryllium-titanium alloy injection molding feed is prepared by mixing composite beryllium-titanium alloy powder and a catalytic degreasing binder according to the mass ratio of (70-80): (20-30), the composite beryllium-titanium alloy powder is composed of, by mass, 40% of spherical beryllium powder, 30% of spherical titanium powder and 30% of irregular beryllium powder. The D90 of the spherical beryllium powder and the spherical titanium powder is 60-80 [mu] m, and the D90 of the irregular beryllium powder is 6-10 [mu] m; the catalytic degreasing binder is prepared from the following components in parts by mass: 76 to 84 parts of polyformaldehyde, 7 to 9 parts of high-density polyethylene, 5 to 7 parts of ethylene-vinyl acetate copolymer, 3 to 5 parts of paraffin, 0.1 to 1.5 parts of stearic acid, 0.1 to 1.5 parts of polyethylene glycol and 0.1 to 1 part of BASF antioxidant. The spherical powder and the irregular powder are reasonably proportioned, so that the powder stacking density and sintering compactness are improved, and meanwhile, the flowability is considered.

A method is shown for manufacturing a hardened gripping element for a sealing and restraint system used for forming a pipe joint in a fluid pipeline. Instead of machining the gripping elements used in the system from a metal stock, a special series of metal injection molding steps are utilized. A metal polymer composite mix is first formed having a metal particulate phase and a polymer phase. A green metal composite article is formed by either extruding the composite mix or molding the composite mix into a metal polymer composite article having at least one gripping surface having a plurality of gripping teeth. The green composite article is subjected to thermal debinding and sintering to produce a brown part. The brown part is selectively hardened in the range from about 42 HRC to 45 HRC to produce a finished or near finished hardened gripping element.

This utility model relates to the field of fixture technology, and in particular to a forming fixture for a swivel-type product in a metal injection molding process. It includes: a lower mold plate and a fixed mold fixing plate fixedly installed on the top of the lower mold plate; an inner wall forming assembly for forming the inner wall of the product; an outer wall forming assembly for forming the outer wall of the product; a upper mold plate and a moving mold fixing plate fixedly installed at the bottom of the upper mold plate. This utility model places the product inside the outer wall forming assembly via the inner wall forming assembly. Then, the upper mold plate, under the action of a forming press, simultaneously forms both the inner and outer walls of the product. This forming fixture can correct two dimensions at once, ensuring that the product dimensions are within the specified range, thus aiding in concentricity alignment during subsequent machining.

The utility model discloses a waterproof structure of a power inlet end, and particularly relates to the technical field of automobile power distribution unit waterproofing, which comprises a waterproof plastic shell, a power inlet stud is arranged in the waterproof plastic shell, and a conductive bus bar is further arranged in the waterproof plastic shell. A plugging stress part is formed at the joint of the conductive bus bar and the waterproof plastic shell, a U-shaped area is arranged on the surface of the conductive bus bar, and the U-shaped area is arranged in a U-shaped power input mode. According to the utility model, the conductive bus bar is designed to be U-shaped, and the injection molding bonding stroke of the conductive bus bar and plastic is increased, so that the range of a plugging stress part is effectively reduced to the whole stroke of an electricity inlet port and the U-shaped bus bar, the stress caused by vibration or plugging is avoided, and the stress possibility after injection molding of plastic and metal is effectively avoided; and the high-speed increase of the cost is avoided.

The invention relates to the field of powder injection molding materials, in particular to an NbC particle reinforced ultra-high-strength steel composite material and a molding process thereof, the composite material is prepared by mixing NbC powder and ultra-high-strength steel powder, the volume ratio of the NbC powder to the ultra-high-strength steel powder is 1: 19-3: 17, namely, the volume fraction of NbC is 5%-15%. The D50 of the NbC powder is 1.0 [mu] m + / -0.5 [mu] m. The forming process comprises the steps of raw material preparation, mixing, banburying and granulation, injection molding, degreasing, sintering and heat treatment. The NbC particles in a specific proportion are added into an ultrahigh-strength steel matrix through a metal injection molding process, so that the wear resistance of the material is remarkably improved, meanwhile, the high-strength characteristic is kept, and the dual requirements of high strength and high wear resistance are met.

The invention discloses a metal injection molding stainless steel material and a preparation method thereof in the technical field of stainless steel metal materials, through precise design of material components and collaborative optimization of a preparation process, comprehensive improvement of the metal injection molding stainless steel material in the aspects of performance, production efficiency, stability and the like is achieved, and the metal injection molding stainless steel material is obtained by combining a subsequent sintering process. And the final material is high in density and uniform in mechanical property. The wax-based binder is combined with the high-dispersion nanocellulose and the catalytic degreasing agent, so that step-by-step efficient removal of pre-degreasing and high-temperature degreasing is realized, and the degreasing period is shortened; the nano-crystalline cellulose forms a rigid framework and is matched with a gradient heating process, so that the cracking and deformation risks of the green body in the degreasing process are greatly reduced.

The utility model provides a non-metal injection molding frame for a photovoltaic panel, which comprises a photovoltaic panel assembly and comprises the following structures: an outer frame, a first clamping groove and a second clamping groove which are fixedly arranged on the long edge and the wide edge of the outer frame respectively; the device comprises at least three sliding seats, ball sleeves are arranged on the opposite sides of the adjacent sliding seats, a ball head is movably connected to the middle of each ball sleeve, the ball sleeves, the ball heads, the first connecting rods and the second connecting rods complete connection and assembly of the two adjacent sliding seats, the first connecting rods, the second connecting rods and the sliding seats are matched, and the deflectable design between the adjacent sliding seats is completed. And limited bending deflection of the adjacent sliding seats is completed, the limiting bending design of the photovoltaic panel assembly is achieved, subfissure of solar cells caused by excessive bending of the photovoltaic panel assembly is avoided, and the technical problem that a frame of an existing flexible photovoltaic panel is lack of bending limiting treatment is solved.

The application relates to a feed for metal injection molding, a preparation method of the feed and a metal product, wherein the preparation method of the feed comprises the following steps: S1, obtaining the following components according to weight parts: 40-50 parts of Fe elements, 2-8 parts of Ni elements, 20-25 parts of Cr elements, 20-25 parts of Co elements, 2-8 parts of Mo elements, 2-8 parts of Cu elements, 0.1-3 parts of Si elements, 1-3 parts of Mn elements, mixing and then heating to melt the material, and then adopting a high-pressure water-gas combined atomization method to obtain mixed powder; S2, obtaining a forming agent; S3, preheating the mixed powder obtained in S1 under vacuum conditions, then adding the forming agent into the mixed powder for mixing, and then performing plasticizing extrusion granulation to prepare the feed. The feed can meet the size precision requirements of MIM injection, green compact degreasing sintering and related post-process machining, the existing MIM materials on the market cannot simultaneously meet the problem of high polishable hardness, and the obtained metal product has the comprehensive advantages of appearance and hardness.

The utility model relates to the technical field of cleaning methods using liquid or steam, and discloses an auxiliary degreasing device of an MIM process, which comprises a device shell, a first space is arranged in the device shell, the left side of the device shell is fixedly connected with a heat energy steam production machine, and the heat energy steam production machine is communicated with the inside of the first space. A first space is formed in the top wall of the equipment shell, a second space is formed in the top wall of the first space, an opening and closing door is arranged on the front side of the equipment shell, the opening and closing door is arranged at the position of the second space, the opening and closing door is rotationally connected with the equipment shell through a first rotating shaft, a handle is fixedly connected to the front side of the opening and closing door, and a transmission mechanism is arranged on the equipment shell. When a workpiece is put into the equipment or taken out of the equipment, a large amount of hot steam can be prevented from being dissipated, so that the equipment does not cause the dissipation of a large amount of hot steam in the working process, the situation that the power needs to be frequently increased to produce the hot steam is avoided, and the cost of thermal degreasing is further reduced.

The utility model discloses an automatic metal injection molding device, which belongs to the technical field of metal injection molding and comprises a base, two sides of the top of the base are fixedly connected with supporting plates, and the tops of the two supporting plates are fixedly connected with the same bearing plate; the lower mold is slidably connected to the outer side of the bearing plate in a sleeving mode, electric push rods are fixedly connected to the two sides of the top of the base, and the output ends of the two electric push rods are fixedly connected to the bottom of the lower mold; the upper mold is arranged above the lower mold, the top of the upper mold is fixedly connected with an injection molding barrel, and a spiral auger is rotationally mounted in the injection molding barrel; the fixing frame is fixedly connected to the top of the base, linkage mechanisms are arranged on the two sides of the fixing frame, and a pushing mechanism is arranged on the front side of the fixing frame. According to the metal injection molding device, the linkage mechanism is matched with the bearing plate to achieve automatic mold closing and demolding work of the metal injection molding device, automatic discharging is convenient, and the injection molding work efficiency is improved.

The invention discloses automatic breaking equipment for metal edge materials of metal injection molded parts, and relates to the field of metal injection molded part machining, the automatic breaking equipment comprises a machine body, a feeding mechanism, a rotating mechanism, a breaking mechanism and a discharging mechanism, the feeding mechanism comprises a mechanical arm assembly and a conveying belt assembly, and the mechanical arm assembly is used for grabbing the to-be-machined injection molded parts on the conveying belt assembly; the rotating mechanism comprises a rotating disc and a fixed disc, a plurality of positioning modules distributed circumferentially are arranged on the rotating disc, downward pressing assemblies are fixed to the fixed disc, a waste collecting pipeline is arranged at the position, located below the downward pressing assemblies, of the first table plate, and the breaking mechanisms correspond to the downward pressing assemblies one to one; the injection molding part is fed and discharged in a circumferential water flowing mode, metal edge materials of the injection molding part can be broken off while feeding and discharging are conducted, waste discharging is fast, the operation procedure is optimized, the machining efficiency of the injection molding part is improved, and the production cost is reduced. And the positioning module is matched with the downward pressing assembly, so that the injection molding part can be accurately positioned, and stable fixation of the injection molding part in the breaking process is ensured.

The invention relates to the technical field of metal insert injection molding, and particularly discloses a processing device and method for improving the problem of metal insert injection flash, S1, metal shell part MIM molding: molding a metal shell part by adopting a metal injection molding process, and designing a blind hole structure in a character position of the metal shell part, a local bulge structure is designed outside; s2, injection molding and filling of PC plastic: carrying out injection molding on the molded metal shell part, and filling the PC plastic; s3, carrying out post-treatment to remove a blind hole convex structure: carrying out polishing and grinding treatment on a product subjected to injection molding by utilizing processing equipment for improving the injection flash problem of the metal insert, and removing the blind hole convex structure; the special blind hole and local protrusion structure design is carried out on the character position of the metal shell part, and subsequent post-processing steps are carried out, so that the problems of flash and R angle of the character position of the metal part are effectively solved, and the possibility of flash is reduced from the source.