315 results about "Injection product" patented technology

The invention relates to an injection molding product defect detection method based on machine vision, which comprises the following steps: collecting material information of a to-be-detected injection molding product in real time, and dynamically matching and adjusting light source parameters according to spectral reflection characteristics of materials to ensure image collection quality; secondly, the collected images are preprocessed, edge features and texture features are extracted, a three-dimensional model is constructed through multi-view image splicing, and three-dimensional defect features are extracted; thirdly, the multi-dimensional features are input into a deep learning model, the defect probability is calculated through feature fusion and forward propagation, and whether the product has defects or not is judged; if the defect exists, further identifying the defect category, and calculating the number and size of the defect; and generating a standardized detection report based on the defect information. According to the method, the image adaptability of products made of different materials is improved through dynamic light source adjustment, the two-dimensional and three-dimensional features are fused, the defect recognition accuracy is improved, and full-process automation from qualitative judgment to quantitative analysis of the defects is achieved.

The invention discloses an AI quality control system based on digital twinning, and relates to the technical field of injection molding product production, and the system comprises a data acquisition module, a digital twinning modeling module, an AI quality detection module, a quality analysis module and an environment optimization module. The data acquisition module collects production and environment data in real time, the digital twin modeling module obtains a high-precision model by simulating the production process, and the AI quality detection module compares simulation data with standard data, calculates a forming deviation coefficient and adjusts process parameters. The quality analysis module detects the injection molding defect risk through the stress concentration coefficient, and the environment optimization module monitors the production environment and provides an optimization strategy when an early warning instruction is triggered. The system can monitor the production process in real time, dynamically adjust technological parameters, improve the production efficiency and the product quality and reduce the rejection rate.

The invention relates to a composition of polyester particles and sodium hyaluronate, which is prepared by the following steps: preparing PCL (Polycaprolactone) microspheres with the particle size of 20-50 microns by an emulsion method; hA is selected, and a PBS buffer solution is used for preparing an HA solution; repeatedly freezing and thawing in a refrigerator at-80 DEG C for 3 times to form micro-crosslinked HA gel; and mixing the microspheres and the micro-crosslinked HA gel according to a mass ratio of 25: 75. The invention provides a technology of taking the physically micro-crosslinked HA as a suspension carrier, so that the polyester particles or microspheres can be stably suspended in an HA solution system without a chemical crosslinking agent, and an injection product has better biocompatibility and safety. HA which does not contain a chemical cross-linking agent and polyester particles / microspheres are mixed to serve as a medical beauty filling system, and the problem of stable suspension of the polyester particles / microspheres in the HA is solved by performing physical micro-crosslinking on the HA.

The utility model discloses automatic punching and receiving equipment for multi-cavity injection products, which comprises a rack, a first carrier transferring mechanism, a manipulator clamp, a runner cutting machine, a transfer carrying module, a second carrier transferring mechanism, a water gap cutting machine, a blanking carrying module and a material distribution box mechanism, wherein the first carrier transferring mechanism, the manipulator clamp, the runner cutting machine, the transfer carrying module, the second carrier transferring mechanism, the water gap cutting machine, the blanking carrying module and the material distribution box mechanism are mounted on the rack; a manipulator clamp is arranged above the input end of the first carrier transferring mechanism in a butt joint mode, a runner cutting machine is further arranged above the first carrier transferring mechanism in a butt joint mode, and the transfer carrying module carries products on the first carrier transferring mechanism after runner cutting to the second carrier transferring mechanism. A water gap cutting machine is arranged above and below the second carrying seat transferring mechanism in a butt joint mode, and a discharging carrying module and a material distribution box mechanism are arranged at the output end of the second carrying seat transferring mechanism in a butt joint mode. By means of the mode, the injection molding runner and the injection molding water gap are sequentially cut twice, hot cutting of the water gap is achieved, cutting precision and notch flatness are guaranteed, product quality is guaranteed, and products are packaged in cavities.

The invention relates to the technical field of injection molds, in particular to a PP (polypropylene) plastic injection mold for ABS (acrylonitrile butadiene styrene), which comprises a workbench, a feeding port, a heating system, a propelling system, a cavity body and a core body, and further comprises a propelling plate arranged on one side of the propelling system and used for mounting and pushing the core body to be attached to the cavity body; according to the PP plastic injection mold for the ABS, the four scraping rods which are arranged at the four corners of the mold core body at equal intervals are arranged on one side of the pushing plate, mold flashes on the outer side of the mold core body can be directly scraped, the flashes are effectively removed, and the appearance quality and the size precision of an injection product are improved; the scraping rod can slide in the rectangular groove or the circular groove according to the shape of the mold core body and the shape of the mold cavity body, linear and arc movement is achieved, the flash treatment requirements of molds of different shapes are met, and the universality of the molds and the flash treatment flexibility are improved.

The invention relates to multi-process combined injection molding equipment and an injection molding method.The injection molding equipment comprises a mold closing assembly, a range finder, a first injection assembly, a gas injection assembly, a second injection assembly, a manipulator and an infrared heater, the mold closing assembly comprises a fixed mold plate and a movable mold plate which are oppositely arranged, and a mold is arranged between the fixed mold plate and the movable mold plate; the range finder is arranged on the mold; the first injection assembly is used for injecting a foaming material of a product main body into the mold, and the first injection assembly communicates with the gas injection assembly; the second injection assembly is used for injecting a second component material into the mold; the manipulator is used for clamping the thermoplastic organic sheet, and the infrared heater is used for heating the thermoplastic organic sheet. Compared with the prior art, integrated lightweight product machining is completed on the same equipment, multiple parts are directly connected when formed in the mold, product transfer and recombination caused by multiple independent procedures are avoided, and the production efficiency and the production quality are effectively improved.

The invention relates to injection molding equipment for producing traceless thin-wall injection molded parts, and belongs to the field of injection molding machines, the injection molding equipment comprises an injection system connected with a heating system for hot melting of plastics, and is characterized by comprising a mold closing box body, the injection system is connected with the mold closing box body, and the heating system is connected with the mold closing box body; a movable mold and two static molds are arranged in the mold closing box body, the injection system injects hot melting plastic into the static molds, and a flow dividing assembly used for guiding the hot melting plastic to only flow to one static mold each time is arranged in the mold closing box body. And a mold closing assembly which is used for driving the movable mold to be separated from one static mold and then immediately transferring the movable mold to the other static mold for mold closing is arranged in the box body. The injection mold has the beneficial effects that the movable mold is prevented from being idle in the material taking process of the mechanical arm, and therefore the production efficiency of injection products is improved.

The utility model discloses injection molding product shaping equipment, which is used for shaping injection molding products in a cooling process and comprises a profiling positioning component, a shaping component and a shaping component, and the profiling positioning component comprises a first profiling block and a second profiling block which are respectively used for being attached to different parts of the injection molding products; the pressing assembly comprises a first pressing block, a second pressing block and a driving part, and the driving part is in transmission connection with the first pressing block and the second pressing block, is used for driving the first pressing block to move towards the first profiling block so as to press the injection molding product, and is also used for driving the second pressing block to move towards the first profiling block and the second profiling block at the same time so as to press the injection molding product. The injection molding product is driven to be attached to the second profiling block through movement of the second pressing block towards the second profiling block, the injection molding product is pressed on the first profiling block through movement of the second pressing block towards the first profiling block, and the driving piece is further used for driving the second pressing block to move towards the second profiling block after driving the second pressing block to complete movement towards the second profiling block. And the first pressing block is driven to move towards the first profiling block.

The double-color injection mold comprises a fixed mold, a movable mold and an ejection mechanism, a pressing block is arranged on the periphery, corresponding to a first cavity and a second cavity, of a female mold, the pressing block is connected to the female mold in a sliding mode, an inwards-concave driving groove is formed in the pressing block, a first driving block matched with the driving groove is arranged at the position, corresponding to the first cavity, of a male mold, and a second driving block matched with the driving groove is arranged at the position, corresponding to the second cavity, of the male mold. When the first driving block is matched with the driving groove, the pressing block is driven to move to press the peripheral edge part of the primary injection molding product, when the second driving block is matched with the pressing block, the pressing block is driven to move outwards to be separated from the peripheral edge part of the primary injection molding product, and a bearing piece used for bearing and abutting against the primary injection molding product is arranged on the periphery, corresponding to the second cavity, of the male die. The bearing piece bears and abuts against the primary injection molding product before the pressing block is separated, the outer periphery of the primary injection molding product is pressed in the female die through the pressing block, the pressing block and the bearing piece are combined for use, it is ensured that the primary injection molding product is always pressed in the female die in the period of switching to the second injection molding, and the injection molding quality and effect are effectively improved.

A localized product injection system includes a composite boom tube having a carrier fluid passage within a tube body, and at least one injection product passage within the tube body isolated from the carrier fluid passage. A plurality of port stations are provided at locations along the tube body. Each of the port stations includes a carrier fluid outlet port and at least one injection product outlet port. A localized injection interface is coupled at a port station. The injection interface includes a carrier fluid input coupled with the carrier fluid outlet port, and at least one injection product input coupled with the at least one injection product outlet port. The injection interface includes at least one throttling element in communication with the at least one injection product input, a mixing chamber, and an injection port configured for localized coupling and injection to a product dispenser.

The present invention provides an in-mold cutting injection mold and its usage method. The in-mold cutting injection mold includes a fixed mold and a moving mold. The moving mold is connected to the fixed mold to form a mold cavity. The in-mold cutting injection mold further includes: a sprue plate, which is arranged on the moving mold, and a sprue communicating with the mold cavity is arranged on the sprue plate; an ejection mechanism, which is movably arranged on the moving mold; a cutting tool, one end of the cutting tool is connected to the ejection mechanism, and the other end of the cutting tool is located at the connection position between the sprue plate and the mold cavity. The cutting tool cuts the sprue material at the connection position between the sprue plate and the mold cavity through the drive of the ejection mechanism. By setting the cutting tool and driving it through the ejection mechanism, automatic in-mold removal of the sprue material connected to the injection product is achieved, eliminating the operation difficulty of manual removal and improving production efficiency. At the same time, the sprue material is removed when the injection product is not completely cooled and hardened, eliminating the breaking marks presented on the injection product.

A synchrotron radiation X-ray on-line research injection mold capable of rapidly switching forming mold cores comprises a fixed mold part, a movable mold part and a heating assembly, the movable mold part is located below the fixed mold part, and the demolding process of injection molding is completed in the mode that parting of an inclined sliding block is matched with ejection of an ejector rod. Comprising an incident side sliding block and an emergent side sliding block which form an injection cavity in a spliced mode, and a transparent window which allows an X-ray beam to penetrate through and does not generate interference is formed in the side wall of the injection cavity; a pressure sensor and a temperature sensor are installed on the incidence side sliding block and used for monitoring technological parameters in real time, and a sample mold core plate and a variable-thickness insert which can be rapidly switched are arranged in the emergence side sliding block. According to the injection mold disclosed by the invention, due to the existence of the mold core plate and the insert which can be quickly replaced, the manufacturing cost and the replacement time of the mold can be reduced, the production flexibility and efficiency are improved, and the injection mold can be combined with a synchrotron radiation X-ray experiment station for in-situ research on a polymer physical phenomenon of a polymer injection product under unbalanced and nonlinear processing.

The invention discloses an injection molding product defect detection method and system based on computer vision, and relates to the field of intelligent detection.The method comprises the steps that firstly, product surface images under diffuse reflection light and low-angle grazing light are captured synchronously; then, a double-flow convolution auto-encoder architecture is adopted, defect-free samples are used for training two branch networks, the two branch networks are made to learn the reconstruction capacity and potential feature distribution of a normal product under the two illumination conditions, cross-modal comparison is carried out through local reasoning, and the consistency constraint relation between illumination view angles is extracted; and finally, forming a multi-dimensional abnormal score in combination with a double-flow reconstruction error and a cross-modal feature difference coefficient, and judging defects by using a dynamic threshold value. According to the method, the surface state base line can be modeled without marking rare defects, the detection sensitivity of low-contrast and light-sensitive defects is enhanced, unknown defect types are effectively identified, and the generalization detection capability of gradual change type or composite type defects is improved.

The utility model relates to the technical field of injection molds, in particular to an injection molding mold for a water purifier, which comprises an upper module, a base, propelling devices and a mold block, the mold block is arranged on the base, the upper module is connected above the base, and the propelling devices are symmetrically arranged on two sides of the base. According to the injection molding mold for the water purifier, the left mold and the right mold can be pushed through the pushing devices arranged on the two sides, automatic injection molding operation is achieved, and the injection molding efficiency is improved; the exhaust pipe is used for exhausting air, air in the mold is exhausted, and the bubble defect is prevented, so that the quality and the flatness of an injection product are improved, and the rejection rate is reduced.

The utility model discloses a structure for improving burrs caused by shrinkage of a double-shot product, which comprises a first-shot product, a second-shot product and a pitched roof structure, the second-shot product is wrapped at the outer end of the first-shot product, the second-shot product is wrapped in partial area of the lower end face of the first-shot product, and the pitched roof structure is arranged on the lower end face of the first-shot product. The inner side face of the first injection product is provided with a pitched roof structure for preventing the first injection product from shrinking, and the acting point of the pitched roof structure and the first injection product is located above the connecting position of the first injection product and the second injection product, namely the position where burrs are prone to being generated. According to the mode, under the condition that the appearance of a product is not changed and the assembly of the product is not influenced, the tendency of plastic shrinkage of the product is blocked through the additionally arranged inclined top structure at the blind hole, the risk of burrs caused by molding secondary injection is avoided, and post-treatment is avoided.

A variable pressure controlled injection method, a semi-finished injection product, and a co-injection product manufacturing method are provided. The variable pressure controlled injection method includes providing an injection molding system, injecting a first foaming material, and performing a foaming step. The injection molding system includes a first variable pressure mold and a second variable pressure mold. In the foaming step, the first variable pressure mold and the second variable pressure mold apply a first pressure and a second pressure to the first foaming material respectively, and then the first foaming material is heated to form a semi-finished injection product. The semi-finished injection product includes a microporous layer and a solidified layer. The co-injection product manufacturing method includes injecting a second foaming material onto the semi-finished injection product and heating under a stable internal pressure to complete foam and obtain a co-injection product.

The invention relates to the technical field of plastic product production, in particular to an injection molding product grabbing device for injection molding, which comprises an injection molding machine, one side of the injection molding machine is provided with a conveying belt assembly for conveying injection molding products, and the top of one side of a fixed mold of the injection molding machine is provided with a three-axis linear module. The three-axis linear module is provided with a clamping assembly used for preliminarily clamping a demolded product, the two sides of the clamping assembly are each provided with an adjusting assembly used for pushing the adjacent clamping assembly to adjust the clamping force, and the two sides of the bottom of the injection molding machine movable mold are each provided with a supporting assembly used for stably supporting the demolded product. Through the arrangement of the clamping assembly and the adjusting assembly, when an injection molding product is demolded, the clamping assembly can pre-clamp the product under the driving of the adjusting assembly, the product is demolded after being pre-clamped, the state that the product is hung on an injection molding machine and inclines cannot occur, and the situation that the product is damaged due to the fact that the position of the product clamped by the clamping device is incorrect is avoided.

The invention provides a multi-layer injection molding device for a thick-wall plastic part, which is used for forming the thick-wall plastic part divided into 2n + 1 layers through injection molding and comprises a fixed mold and a movable mold, 2n fixed stations are distributed on the fixed mold in the circumferential direction of the fixed mold, and 2n movable stations are arranged on the movable mold in the circumferential direction of the movable mold; n is a natural number; the 2n fixed stations and the 2n movable stations form 2n injection molding stations, the movable mold is provided with a moving assembly, and the moving assembly can move a workpiece formed by injection molding of the previous injection molding station to the next injection molding station; a first layer structure located in the center area of the thick-wall plastic part is formed in the first injection molding station in an injection molding mode. According to the device disclosed by the invention, through a mode of performing multi-layer injection molding, firstly injecting a core part of a product and then performing layered injection molding on two sides of the product for multiple times, resin of each layer is cooled most sufficiently, and the problem of long molding period is solved.

The invention discloses a double-shot injection mold which comprises a fixed mold provided with a first fixed mold core used for forming a first-shot product and a second fixed mold core used for forming a second-shot product; two same movable mold cores are arranged on the movable mold, and a plurality of pressing mechanisms used for fixing a first injection product are arranged on the outer side of a movable mold cavity located on the movable mold cores; the pressing mechanism comprises a pressing block in sliding fit with the movable mold core, and the pressing block can horizontally move in the direction away from or close to the movable mold cavity. When the fixed mold and the movable mold are closed, the pressing block on the movable mold core which is closed with the first fixed mold core can be pushed to move towards the direction close to the movable mold cavity, and the pressing block on the movable mold core which is closed with the second fixed mold core can be pushed to move towards the direction away from the movable mold cavity. The first-shot product is fixed in the movable mold cavity through the pressing mechanism when the mold is opened, so that the problem that the first-shot product is displaced due to adhesion between the first-shot product and the fixed mold is well solved.

The utility model belongs to the field of injection molds, and provides an injection mold with an elastic needle structure, which comprises a male mold core, a female mold core, a sliding block and an elastic needle, the sliding block is arranged between the male mold core and the female mold core, and an injection product is arranged among the male mold core, the female mold core and the sliding block; the elastic needle slides in the sliding block, one end, close to the male mold core, of the elastic needle protrudes out of the sliding block and is used for forming a hole site of an injection product, and the other end of the elastic needle abuts against the female mold core; and a spring is arranged in the sliding block, and drives the elastic needle to move towards the female mold core during mold opening. The sliding block is used for side edge forming of an injection product, and meanwhile, the elastic needle is arranged in the sliding block to meet hole site forming; the sliding block and the vibrating needle are linked, the structure is simple, and the production efficiency is improved while the machining requirement is met.

The utility model discloses a short lead sheath injection molding device. An upper mold is arranged at the bottom end of an injection molding head and corresponds to the rear side of a workbench, the middle of the workbench is rotationally connected with a rotary table, a motor is arranged above a base and is in transmission connection with the rotary table through a connecting base, the rotary table is round, and lower molds are arranged on the front side and the rear side of the rotary table. According to the device, an operator can conveniently guide and limit the end part of the wire harness to be bent into an L shape, the efficiency of the operator is improved, the workload of the operator is reduced, the operator can conveniently continue to fix the wire harness to be subjected to injection molding in the injection molding process, the production efficiency of a product is improved, and the labor intensity of the operator is reduced. According to the device, an operator can conveniently take down an injection product, stress points are prevented from being concentrated due to the arrangement of multiple points, damage to the product is further avoided, the yield of the product is increased, and the production cost is reduced.

The invention discloses two-shot imprinting equipment and a two-shot imprinting method, and relates to the technical field of injection molding.The two-shot imprinting equipment comprises a rear mold, a two-shot mold, a front mold and an ejector pin assembly, a supporting face is formed at one end of the rear mold, and a channel extending to the supporting face is formed in the rear mold; the second injection mold and the rear mold are oppositely arranged, and the second injection mold can move in the direction close to the forming part so as to be arranged on the periphery of the forming part in a surrounding mode or move in the direction away from the forming part so as to be separated from the forming part; a second injection cavity can be defined by the front mold, the second injection mold and the first injection product; the ejector pin assembly is arranged corresponding to the channel and can stretch into the channel, move towards the front mold and eject out of the supporting face, and eject up the first-shot product so as to stamp the first-shot product. According to the invention, through the cooperation of the front mold and the second-injection mold, the space towards which the appearance surface of the first-injection product faces is reserved, so that the appearance surface of the first-injection product is not pressed, flaws caused by the damage of the appearance surface of the first-injection product due to pressing are avoided, and the yield of the first-injection product is improved.

The invention relates to the technical field of automatic assembling machinery, in particular to an automatic separating and assembling device for injection products. The injection molding product comprises a rotary connecting main body, the rotary connecting main body comprises a box body and a box cover which are arranged in pairs, the box body and the box cover are transversely arranged, the box body and the box cover are connected through a runner forming piece, and the box body and the box cover are each provided with a rotary connecting piece. The rotating connecting piece comprises a rotating shaft hasp and a rotating shaft which are arranged on the close sides of the pair of rotating connecting bodies respectively, and a pair of buckling components corresponding to each other are arranged on the box body and the box cover. The fixing frame is provided with a limiting groove for accommodating the bottom of the box body; the material cutting device is used for cutting off a runner forming part; the assembling device is used for moving the box cover until the rotating shaft hasp is coupled with the rotating shaft; and the cover closing device is used for turning over the box cover until the pair of buckling components are coupled. Automatic assembly is achieved, and the production efficiency can be improved.

The utility model discloses an injection molding glue injection structure and an injection mold, the injection molding glue injection structure comprises a pouring gate communicated with a cavity of the injection mold and a runner communicated with the pouring gate, the runner is communicated with a pressure dividing well, and the length of the pressure dividing well is more than ten times of the thickness of a glue inlet position of the cavity. The pressure dividing well structure is designed at the tail end of the runner, so that the pressure at the sprue is reduced, the speed at the sprue is divided, the surface speed of a product is reduced, and sprue lines are prevented from being generated on the surface of an injection product. By means of the sheet-shaped pouring gate rubber feeding structure, sudden change of the shearing rate of rubber in the whole runner structure is reduced, pouring gate lines on the surface of a product are avoided, the pressure and rate of molten rubber of a main runner can be divided by the pressure dividing well, the pressure and rate of the molten rubber flowing into the sub-runners are reduced, and the pouring gate lines on the surface of the product are avoided. The flow velocity can be effectively ensured to be adjusted from a disordered state to a stable state, so that a product is filled at a stable flow velocity, and gate defects are avoided.

The invention provides an injection molding product defect detection method and equipment based on SMA2-U-Net and semi-supervised training, and belongs to the technical field of injection molding product production. The injection molding product defect detection method comprises the following steps: constructing an image data set of an injection molding product, wherein the image data set comprises a semantic segmentation training set formed by defect injection molding samples which occupy a small part and have labels and an image reconstruction auxiliary training set formed by normal injection molding samples which occupy a large part and have no labels; respectively inputting the semantic segmentation training set and the image reconstruction auxiliary training set into a defect detection model based on an SMA2-U-Net architecture by adopting a semi-supervised learning strategy, and sequentially carrying out alternate training of a semantic segmentation main task and an image reconstruction auxiliary task; and deploying the defect detection model, inputting the image data of the injection molding product into the defect detection model, and outputting a defect detection result. According to the method, the dependence of model training on labeled defect sample data can be reduced, and the problems that in the prior art, model over-fitting is likely to be caused, and the accuracy and robustness of the detection effect are insufficient are solved.

The invention discloses automatic tapping equipment, and relates to the field of drilling and tapping, the automatic tapping equipment comprises a machine base, a limiting rotating seat is arranged on the machine base, a driving wheel is rotatably connected to the limiting rotating seat, a first driving piece is arranged on the machine base, a first mounting rod is rotatably connected to the limiting rotating seat, and a first driven wheel is arranged on the first mounting rod; a guide arc plate is arranged on the limiting rotating seat, the guide arc plate and the driving wheel are coaxially arranged, a plurality of guide rotating seats are arranged on the guide arc plate in a sliding mode, a second mounting rod is rotationally connected to the guide rotating seats, a second driven wheel is arranged on the second mounting rod, and a second driving part is rotationally arranged on the side wall of the guide arc plate; and mounting devices are arranged at the ends, away from the first driven wheel, of the first mounting rod and the second mounting rod correspondingly, a sliding seat is slidably connected to the machine base, a third driving part is arranged on the machine base, and a clamping device used for clamping injection products is arranged on the sliding seat. The machining efficiency of machining injection products is improved, and the machining effect of the products is ensured.

The utility model relates to a mould exhaust structure of annular injection product, and relates to the technical field of mould exhaust structure, including upper die and lower die, the upper die is connected with upper insert needle, the lower die is connected with lower insert needle, the upper die is equipped with forming cavity, the upper end portion of lower insert needle extends to the forming cavity and is with the lower end portion of upper insert needle is low, the utility model discloses solve the device in traditional technology when producing thin -walled annular product, adopt inside multiple runner and glue, when the average wall thickness of product is very thin, the velocity and pressure will be greater, if exhaust does not guide out mould, will produce bubble between runner and runner, affect the problem of product yield.

The utility model discloses an injection molding submarine gate double-ejection structure which comprises a submarine gate and a gate runner which are formed between molds, the head of the gate runner is connected with the submarine gate, two ejector rod holes are formed in the mold below the gate runner, and the two ejector rod holes are parallel and perpendicular to the gate runner. An ejector rod is arranged in each ejector rod hole; and the two ejector rods can synchronously jack up a submarine gate and a gate waste part in a gate runner while an injection product is ejected out. According to the ejection mechanism, the problems of ejection, bouncing and falling of the submarine gate waste part can be solved, the gate waste part can be ejected out in a balanced stress manner, the waste part can be conveniently clamped, the overall production efficiency is improved, the surface appearance of an injection product and the mirror surface of a mold are protected, and the product quality is improved.

The utility model discloses a mold structure for improving burrs of a PPS (polyphenylene sulfite) bumping hole, relates to the technical field of production of electronic component injection products, and solves the problems that a cylindrical pin on a mold is easy to expand due to high-temperature thermal expansion to damage the mold and influence the quality of the product in the injection production of the product. The sleeve is internally provided with a guide channel, and a limiting cavity is formed between the guide channel and the sliding block; the cylindrical part is movably arranged in the guide channel, the front end of the cylindrical part extends out of the guide channel, and a limiting part matched with the limiting cavity is arranged at the rear end of the cylindrical part; and a spring. The die structure can prevent the cylinder part from being damaged due to thermal expansion and lengthening, a gap is formed between the limiting part at the rear end of the cylinder part and the sliding block, the cylinder part has a retreating space, meanwhile, due to the effect of the spring, the cylinder part of the cylinder part penetrates through the small hole in a colliding mode, and no gap exists between the front end face of the cylinder part and the die part. And burrs of the round holes are prevented.

The invention provides a polyolefin injection molding parameter optimization method, and belongs to the technical field of injection molding processes. The problem that the benefits of a production workshop are affected in the prior art is solved. The polyolefin injection molding parameter optimization method comprises the following steps: obtaining the melt glue amount of an injection molding machine table in unit millimeter; according to the theoretical weight of the injection molding product, the glue melting position and the glue melting amount, the pressure transfer and maintaining position is determined; injection molding pressure, injection molding speed, injection molding time and dwell pressure are obtained through a mold flow simulation technology; the pressure maintaining time is preset, and the injection molding machine conducts pressurized injection and pressure maintaining treatment on the mold according to the parameters; calculating cooling time; after the injection molding product is cooled for a time period, demolding and weighing; after the pressure maintaining time is adjusted according to the gradient, injection molding is conducted again to obtain an injection product, and weighing is conducted; the final pressure maintaining time is selected according to the weight difference of the injection molding products, and finally the final cooling time is confirmed; and making the finally determined parameters into a process card, and then carrying out injection molding according to the parameters on the process card. According to the invention, the product forming quality and efficiency are improved.