77results about How to "Shorten injection molding cycle" patented technology

The invention discloses an antibacterial flame-retardant ABS material and a preparation method thereof. The antibacterial flame-retardant ABS material is prepared from ABS resin, a flame-retarding agent, a coordinative flame-retarding agent, an auxiliary flame-retarding agent, a thermal stabilizer, an antibacterial master batch, a compatilizer, an antioxidant and a lubricating agent in parts by weight, wherein the antibacterial master batch is prepared from ABS and at least one of a silver ion type antibacterial agent, zinc oxide and copper oxide by a mass ratio of 10 to 1. According to the ABS material disclosed by the invention, the silver ion type antibacterial agent or the zinc oxide or the copper oxide and the ABS are used for preparing the antibacterial master batch by the mass ratio of 10 to 1, so that the silver ion type antibacterial agent or the zinc oxide or the copper oxide is effectively uniformly dispersed in the ABS resin in order to improve the antibacterial efficiency and achieve a better antibacterial effect than an antibacterial agent which is used independently; and color changes of antibacterial ABS plastic can be effectively prevented, and the antibacterial properties of the antibacterial ABS plastic can be improved.

The invention discloses a highlight injection mould heating and cooling device and a heating and cooling method thereof. The heating and cooling device comprises a mould cavity, an electric heating rod, a pump, a heat exchange medium storage container and a controller. The electric heating rod is arranged in a pipeline which is arranged on the mould cavity, a gap for feeding of heat exchange media is reserved between the electric heating rod and the inner wall of the pipeline, a first control valve is arranged at one end of the pipeline, and a second control valve is arranged at the other end of the pipeline. A temperature sensor is arranged on the mould cavity, a pressure sensor is arranged in the pipeline, the temperature sensor and the pressure sensor are connected into the controller, and the pump, the control valves and the electric heating rod are all controlled by the controller. The mould cavity can be heated to higher temperature without external high-pressure boilers and fixed connection pipes, and heat transfer speed and efficiency are high. Further, the highlight injection mould heating and cooling device and the heating and cooling method thereof have the advantages of high safety, reliability and energy conversion efficiency, capability of further shortening injection period and the like.

The invention discloses a spraying-free, heat-resistant and weather-resistant high-brightness PMMA alloy material and a preparation method thereof. The spraying-free, heat-resistant and weather-resistant high-brightness PMMA alloy material is prepared from the following components in parts by weight: 70 to 75 parts of PMMA resin, 5 to 20 parts of a compound flexibilizer, 0 to 5 parts of a heat resisting agent, 0.2 to 0.5 part of a light stabilizer, 0.3 to 0.5 part of an antioxidant, 0.2 to 0.3 part of a lubricating agent and 0.5 to 1.0 part of a toner, wherein the compound flexibilizer is prepared by compounding acrylate and organic silicon resin according to a mass ratio of 3 to 1; the heat resisting agent is customized LMPB-g-MAH. By the adding of the crylic acid and organic silicon compound flexibilizer into the PMMA resin, the PMMA resin material is high in impact strength and weather resistance; the heat resisting agent is added into the PMMA resin, the PMMA material is high in heat resistance; therefore, the PMMA material can be molded through one-time injection, and the production efficiency is improved.

The invention provides a high-precision and high-efficiency injection molding machine. The high-precision and high-efficiency injection molding machine comprises a machine body and further comprises amovable mold plate, a fixed mold plate and an injection mechanism. A plurality of pull rods are mounted between the movable mold plate and the fixed mold plate. A combined contracting brake mechanismcorresponding to the pull rods is mounted on the movable mold plate. A nitrogen auxiliary injection device connected with the injection mechanism is mounted at the side end of the machine body. During mold closing, the combined contracting brake mechanism locks the pull rods. the combined contracting brake mechanism comprises a contracting brake cylinder and a plurality of mold locking pistons. The contracting brake cylinder is connected with one mold locking piston. A piston linkage connecting rod is eccentrically hinged between the two adjacent mold locking pistons. The high-precision and high-efficiency injection molding machine provided by the invention is high in mold replacing speed, good in combined mold locking effect and high in reliability and safety coefficient. The whole high-precision and high-efficiency injection molding machine is high in starting speed, stable in injection rate, high in repeating precision, large in mold containing space, high in production efficiencyand stable and reliable in operation.

The invention relates to the field of injection moulds, in particular to a slide demoulding mechanism for an in-mould lamination injection mould. The slide demoulding mechanism comprises a slide (10) which forms a mould cavity of the injection mould jointly with a fixed mould core and a movable mould core and is further provided with a heel block (8) used for limiting the position of the slide (10) in the injection mould, a first power mechanism (22) which can drive the heel block (8) to move to relieve limiting of the heel block (8) on the position of the slide (10) in the injection mould and a second power mechanism (23) which can drive the slide (10) to be far away from the mould cavity of the injection mould. According to the slide demoulding mechanism for the in-mould lamination injection mould, the heel block and the slide in the injection mould can be driven by the power mechanisms to be adjusted, so that separation and backoff between the slide and a moulded product can be achieved; compared with the traditional mode that the mould is artificially opened to take the slide out, mechanical operation in the injection mould is achieved, one-time mould opening in the injection process can be reduced, the injection cycle is effectively shortened, and the production efficiency in the injection process is improved.

The invention provides a permanent antistatic micro-foaming polypropylene composite material and a preparation method thereof, and relates to the technical field of polymer materials. The composite material is prepared from polypropylene resin, a flexibilizer, filler, antistatic master-batches, a foaming agent, an antioxidant, an optical stabilizing agent and a lubricating agent. The polymer permanent antistatic agent can form a polymer network structure in the polymer, is permanently antistatic, still has an antistatic effect in an extremely low humidity environment, and has the advantages of good thermal stability and good chemical resistance.

The invention discloses a multi-color automatic integrated production device and method for plastics. The device is characterized in that a plurality of injection molding machines are distributed in parallel, wherein manipulator mounting guide rails are continuously arranged at one side of each injection molding machine; a cross beam manipulator is arranged at the output end of each injection molding machine, and the cross beam manipulator is arranged on each manipulator mounting guide rail and can move leftwards and rightwards along the manipulator mounting guide rail. The method is characterized in that after being molded through a first injection molding machine, a first-color part of a product is moved out through the first cross beam manipulator and then conveyed into a second injection molding machine; a second-color part is subjected to injection molding on the basis of the first-color part through the second injection molding machine; the molded second-color part is moved out through a second cross beam manipulator and then conveyed into a third injection molding machine to be processed in an injection molding manner; after the final-color part of the product is subjected to injection molding through the last injection molding machine, the product is moved out through the last cross beam manipulator and then conveyed to a product output conveyor belt. With the adoption of the device and the method, the production efficiency can be effectively improved; the manual operation is decreased, and thus the production cost can be decreased greatly.

The invention relates to an EVA (ethylene-vinyl acetate) microcapsule foaming master batch and a preparation technology, which comprise a material structure of a microcapsule foaming master batch and preparation technology steps of the microcapsule foaming master batch. The material structure of the microcapsule foaming master batch comprises the following materials in percentage by mass: 33 to 50% of EVA copolymer powder, 40 to 65% of microcapsule foaming agent and 2 to 10% of silicone oil. The preparation technology comprises the steps of firstly, grinding the EVA into the powder with particle size no more than 100 micrometers according to the percentage; then, weighing the EVA powder, the microcapsule foaming agent and the silicone oil according to the percentages, and adding the raw materials into a sealed type mixer to mix, wherein the mixing temperature is 50 to 70 DEG C, the mixing speed is 5 to 20r/min, and the mixing time is 8 to 15min; finally, adding the mixed materials into a screw type extrusion granulator, and granulating, wherein the granulating temperature is 50 to 60 DEG C; cooling, so as to obtain the EVA microcapsule foaming master batch.

The invention discloses a multi-cavity injection mould hardware mould inputting jig which comprises an element taking plate and an installation plate in parallel arrangement; the installation plate is installed above the element taking plate; the element taking plate and the installation plate are elastically connected through a plurality of elastomers; a first grip is arranged on the element taking plate; a second grip is installed on the installation plate; the element taking plate is provided with a plurality of embedding element clamp heads which are in uniform distribution; the embedding element clamp heads penetrate through the element taking plate and extend from the bottom surface of the element taking plate; the embedding clamp heads are of a hollow cylindrical shape matched with the shape of a hardware element; and the bottom surfaces (corresponding to the installation plate) of the embedding clamp heads are provided with a plurality of ejection columns inserted into the embedding element clamp heads. The multi-cavity injection mould hardware mould inputting jig has the characteristics that leisure time of operators can be reasonably utilized, the injection molding cycle is shortened, and the injection molding efficiency is improved; the invalid time of the operation of an injection molding machine is shortened, and blocking and chewing can be prevented; hardware can be safely enters a mold by utilizing the jig; and within the original effective time, hardware with the number four times, eight times or even more that of the original hardware can be input.

The invention provides an injection mould provided wtih a core-pulling mechanism driven by mould opening and closing actions, wherein, the injection mould can solve the problems that the core-pulling mechanism adopting a hydraulic cylinder to perform the core-pulling from the lower part of a product has the disadvantages of complicated structure, high cost and bad stability when the core-pulling is carried out in conventional core-pulling manners such as obliquely propping and the like so as to solve an internal inverted buckle existing in the product and so on. The injection mould adopts thetechnical scheme as follows: a driving slide block is connected with a mould movable template in a sliding manner, and the sliding direction is perpendicular to the mould opening direction of the mould; at least one side surface at the front end of the driving slide block takes the shape of a wedge; a driven slide block is inserted in an inserted block; in addition, the driven slide block is provided with a wedged end surface and matched with the driving slide block through an inclined slideway in a sliding manner. The core-pulling mechanism of the injection mould utilizes an inclined guide pillar to drive the slide block when the mould is opened and closed, the core-pulling action is completed in the direction perpendicular to the mould opening and closing direction, the problem of the internal inverted buckle can be solved, the strucutre is simple, the cost is low, the stability of the mould is good, and the injection moulding period is short.

The invention discloses a mold local cooling system based on low-temperature high-pressure gas. The system comprises an air source capable of providing compressed air, a filter connected with the airsource through a first air pie, a pressurizing pump connected with the filter through a second gas pipe, an exchange refrigeration assembly connected with the pressurizing pump through a third air pipe and capable of refrigerating the pressurized compressed air, a mold internally provided with a cooling air flow way, and a controller. One end of the cooling air flow way is connected with the exchange refrigeration assembly through a fourth air pipe, mold cooling is carried out, and an electromagnetic valve is arranged on the fourth air pipe, and the controller is connected with the pressurizing pump, the exchange refrigeration assembly and the electromagnetic valve for control. Through the above manner, according to the mold local cooling system based on the low-temperature high-pressure gas, the low-temperature high-pressure gas is used for serving as mold cooling media, the gas can reach the mold interior where a common cooling medium cannot arrive, local cooling is rapidly achieved,the injection molding period is shortened, and the pollution is reduced.

The invention discloses a mold clamping mechanism of a two-plate injection molding machine. The clamping mechanism comprises a movable mold plate and a fixed mold plate that are arranged in parallel and at an interval, wherein a mold locking oil cylinder is arranged on one side, far away from the movable mold plate, of the fixed mold plate; the end part of a mold locking piston rod penetrates through the fixed mold plate and then is connected with the movable mold plate; a mold moving mechanism used for driving the movable mold plate to move along the mold locking piston rod is arranged between the movable mold plate and the fixed mold plate; a half-and-half brake nut capable of locking or unlocking the mold locking piston rod is arranged on one side, far away from the fixed mold plate, ofthe movable mold plate; a fine adjustment oil cylinder is fixedly arranged at one end, far away from the fixed mold plate, of the mold locking oil cylinder; the area of the cross section of the fineadjustment oil cylinder is smaller than that of the mold locking oil cylinder; a fine adjustment piston rod is arranged in the fine adjustment oil cylinder; the end part of the fine adjustment pistonrod is fixedly connected with a mold locking piston. The mold clamping mechanism of the two-plate injection molding machine has the advantages of being high in linkage degree, production efficiency and product quality.

The invention discloses an anti-yellowing thermoplastic polyurethane elastomer and a preparation method thereof. The polyurethane elastomer has shore hardness of 60 to 75 A. The polyurethane elastomeris prepared from the following raw materials: polyester glycol, 1,4-butanediol, an anti-ultraviolet absorbent, di(2,2,6,6-tetramethyl-4-pipradrol)sebacic acid ester, 4,4'-diphenylmethane diisocyanate, an antioxidant and a catalyst. According to the anti-yellowing thermoplastic polyurethane elastomer and the preparation method thereof, the shore hardness of the thermoplastic polyurethane elastomeris up to 60 to 75 A, and the injection molding period is effectively shortened, so that a phenomenon of sticking of a mold during processing is avoided. Furthermore, due to addition of the anti-ultraviolet absorbent, the polyurethane elastomer disclosed by the invention is excellent in anti-yellowing property. Moreover, the injection molding period and the intensity of the thermoplastic polyurethane elastomer can be balanced by regulating and controlling the use amount of a catalyst. The preparation method of the polyurethane elastomer is environmentally friendly, economical, high in weatherresistance, high in injection molding speed and high in processing efficiency, and can be widely applied to injection molding of products such as a shoe material, a triangular belt and sheet rubber.

The invention discloses an IML reverse covering process of a laundry machine panel. The process comprises the following steps: discharging a PET film, and cutting the PET film into a PET sheet of the corresponding size according to product appearance; printing the PET sheet, namely printing patterns on the PET sheet through a screen printing machine; thermally forming the PET sheet, namely performing thermal forming on the printed PET sheet through a thermal forming machine; inlaying the PET sheet, namely placing the thermally formed PET sheet to a movable mold cavity of an injection molding mold, wherein the printing surface of the PET sheet faces downwards and is positioned; performing product injection molding, namely performing injection molding on the product by using a two-plate mold, and fusing the PET sheet to the surface of a plastic piece through high-temperature high-pressure injection molding; opening the mold and taking out the finished product; and packaging. The process has the advantages that the production cycle is shortened, the waste of remnants is reduced, and the quality of the product is ensured.

The invention belongs to the technical field of injection molding equipment, and in particular refers to a multi-station injection molding machine; it includes an extruder, and the discharge port of the extruder is connected to the storage tank through a feeding main pipe, and several discharge pipes are arranged on the feeding main pipe. Each outlet is connected to the die clamping frame, and several clamping frames are arranged along at least one side of the extruder; the present invention distributes the melt raw material of an extruder through the feeding main pipe and the material storage cylinder. Injecting multiple clamping frames realizes the process of one extruder distributing multi-station injection molding, which reduces production costs and labor costs, improves injection molding efficiency, and shortens injection molding cycle.

The invention relates to the technical field of injection molding machines and discloses a reverse control method for neutron action of an injection molding machine. The reverse control method comprises the following steps of fixing an injection molding die on the injection molding machine, and then connecting an oil cylinder for controlling neutrons to advance and retreat on the injection moldingdie with a hydraulic system of the injection molding machine; switching a control panel of the injection molding machine to a neutron function setting interface, and selecting a use option in the reverse setting of the neutrons; executing the advancing action of the neutrons by using injection molding machine controller programs, absorbing by using a valve for controlling the neutrons to retreat,and driving the neutrons to retreat by using the oil cylinder; or performing the neutrons retreating action by using the injection molding machine controller programs, absorbing the oil by using a valve for controlling the neutrons to advance, and driving the neutrons to advance by using the oil cylinder. The reverse control method disclosed by the invention has the advantages that the injectionmolding machine has the neutron reversing function, and a high-pressure oil pipe does not need to be exchanged, so that personal security is ensured; and in addition, information interference to othermolds is avoided.

The invention discloses a cooling water channel structure of an automobile engine cooling fan mold. The cooling water channel structure is composed of a fixed mold side water channel arranged on the back side of a fixed mold side fan mold cavity and a movable mold side water channel arranged on the back side of a movable mold side fan mold cavity. The fixed mold side water channel comprises a plurality of independent fixed mold side well type water channels. Each fixed mold side well type water channel is arranged on the back side of a blade cavity in the fixed mold side fan mold cavity. Eachfixed mold side well type water channel is provided with an inlet and an outlet. The movable mold side water channel comprises a plurality of independent movable mold side well type water channels. Each movable mold side well type water channel is arranged on the back side of a blade cavity in the movable mold side fan mold cavity. Each movable mold side well type water channel is provided with aninlet and an outlet. The cooling water channel structure has the advantages that the cooling effect is good; the shape of the curved surface of each injection molded fan blade can reach the expectedideal shape; the injection molding period can be shortened; and the injection molding production efficiency is greatly improved.