Multipoint synchronous injection molding and flow-adjustable pipeline connecting piece injection molding machine
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of extrusion and injection molding dies, in particular to a pipeline connecting piece injection molding machine which is applied to multi-point synchronous injection molding and flow adjustment of a large-caliber plastic pipe injection molding connecting piece.
[ background of the invention ]
In extrusion injection, a die is usually disposed at the discharge port at the front end of the extruder, and the material in the extruder is shaped into a product after entering the die.
Like Chinese patent No. ZL201010526553.2, a forming device of a steel belt reinforced polyethylene spiral corrugated pipe connecting component is disclosed, which comprises a pipe placing frame and an injection machine table, wherein the upper end of the injection machine table is connected with a mould supporting frame, the left side of the mould supporting frame is connected with a sprue bush through a screw, the position, close to the bottom end, of the left side of the mould supporting frame is connected with a cavity main locking oil cylinder through a screw, the right side of the mould supporting frame is connected with one end of a core fixing plate through a screw, a core loose oil cylinder is fixed on the core fixing plate, the other end of the core fixing plate fixes a core through a screw, the upper end of the core fixes a cavity fixing plate, the cavity fixing plate is fixed on the cavity fixing plate through a screw, cavity auxiliary locking oil cylinders are arranged on two sides of the cavity main locking oil cylinder, the cavity auxiliary locking oil cylinders, two ends of a cavity slideway pressing strip are respectively connected with a cavity fixing plate, a half block cavity is arranged in the middle of the cavity slideway pressing strip, cavity core-pulling oil cylinders are arranged in the middle of the two cavity fixing plates, a workpiece is arranged on the pipe placing frame, and one end of the workpiece is a forming joint. The half block die is radially and axially locked through the oil cylinder, the adjustable pipe placing frame is suitable for pipes of different specifications, and the double-injection system performs circular injection molding. However, the injection molding of the mold cavity is only in a single-point mode, the whole mold cavity cannot be filled quickly, the fullness of the product cannot be ensured, and the quality of the product is influenced.
Chinese patent No. ZL201611093692.4 discloses an extrusion feeding mechanism and an extrusion injection molding machine, wherein two extrusion feeding mechanisms are arranged on two sides of a mold, the whole mechanism of the extruder moves towards the direction of an injection mold under the action of a hydraulic cylinder, injection ports of a machine head of the extruder correspond to the injection ports of the mold one by one, namely, the injection mold is provided with two injection ports, when the extrusion feeding mechanism works, the extrusion feeding mechanism firstly drives the extruder to move for a certain distance towards the direction of the mold, then the extruder starts a screw rod to rotate to plasticize materials, and the plasticized materials are forcibly injected into a mold cavity of the mold through the injection ports; after the pressure of the melt filled in the cavity is maintained for a period of time, the mold is continuously cooled until the melt is solidified; cooling and solidifying, keeping the shape given by the mold cavity, finally opening the mold and parting to obtain a molded part with the required shape and size, and continuously repeating the production process of the period; two or more extruders work together continuously to meet the requirement of large extrusion capacity and large capacity of large injection parts. Although a two-point synchronous injection molding mode is adopted, the flow rate is not easy to control, and the two-point synchronous injection molding mode can not enable the material to be quickly filled in the whole mold cavity, can not ensure the plumpness of the product and influences the quality of the product.
[ summary of the invention ]
In order to solve the problems, the invention aims to provide the pipeline connecting piece injection molding machine which can simplify the structure, can adapt to multi-point synchronous injection molding of various specifications and can adjust the flow.
In order to achieve the purpose, the invention adopts the technical scheme that: a multi-point synchronous injection molding and flow-adjustable injection molding machine for a pipeline connecting piece comprises an extrusion plasticizing injection device, wherein a storage bag is arranged at the rear end of the extrusion plasticizing injection device, a hydraulic push valve body is arranged at the rear end of the storage bag, a main flow channel is arranged at the front end of the storage bag, an adjustable multi-point injection molding shunting die set is arranged at the front end of the main flow channel, a core die and an outer die which are used for installing and fixing dies with corresponding specifications are arranged on one side of the adjustable multi-point injection shunting die set, and a die cavity shape formed between the core die and the outer die is a required product structure; the adjustable multi-point injection molding split-flow die frame is characterized in that a melt distributor is arranged in the center of the other side of the adjustable multi-point injection molding split-flow die frame and communicated with a main runner, at least two split-flow runners extend outwards from the melt distributor, a plurality of injection ports are arranged in each split-flow runner in an array control mode, the position of each injection port corresponds to a die cavity formed by core dies and outer dies of different specifications, the injection ports are communicated with the corresponding die cavities, and an adjusting valve used for flow adjustment is arranged between each injection port and each split-flow runner.
The injection molding machine for the pipeline connecting piece with multi-point synchronous injection molding and adjustable flow is further provided with the following components: the branch runner is a closed runner formed by a valve body seat arranged on the adjustable multi-point injection molding branch die frame and the adjustable multi-point injection molding branch die frame.
The injection molding machine for the pipeline connecting piece with multi-point synchronous injection molding and adjustable flow is further provided with the following components: the regulating valve comprises a regulating rod and a valve body used for controlling the regulating rod to stretch, the front end of the regulating rod is positioned at the material injection port, and the valve body is fixed on the valve body seat.
The injection molding machine for the pipeline connecting piece with multi-point synchronous injection molding and adjustable flow is further provided with the following components: six strip-shaped sub-runners extend outwards from the melt distributor, and the six strip-shaped sub-runners are uniformly distributed by taking the melt distributor as the center.
The injection molding machine for the pipeline connecting piece with multi-point synchronous injection molding and adjustable flow is further provided with the following components: five injection ports are arranged in each sub-runner, and the injection ports arranged on the six sub-runners are arranged in a concentric circle mode with the melt distributor as the center.
Compared with the prior art, the invention has the following beneficial effects: the injection molding machine for the multipoint synchronous injection molding and flow-adjustable pipeline connecting piece is simple in structure, convenient to use and simple and convenient to install and disassemble, can be suitable for manufacturing products of different specifications only by replacing the core mold and the outer mold, saves the production cost, saves the complex procedures of cleaning the adjustable multipoint injection molding shunting mold frame, reduces the waste of materials and saves manpower. And it injects into the die cavity that mandrel and external mold formed fast through the mode of multiple spot synchronization to all set up the governing valve that is used for flow control between every sprue and the subchannel, can adjust control the flow alone, guarantee that the die cavity is full of required raw materials fast, accomplish the preparation to the product, guaranteed the plumpness of product, improved the quality of product.
[ description of the drawings ]
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the adjustable multi-point injection split-flow mold frame in fig. 1.
Fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.
In the figure: 1. the adjustable multi-point injection molding split-flow mold frame comprises an adjustable multi-point injection molding split-flow mold frame, a core mold, a 3 outer mold, a 4 extrusion plasticizing and pressure injection device, 5 storage bags, 6 mold cavities, 7 melt distributors, 8 split-flow channels, 9 valve body seats, 10 injection ports, 11 adjusting valves, 111 adjusting rods, 112 valve bodies, 12 main flow channels.
[ detailed description ] embodiments
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, a pipe connector injection molding machine with multipoint synchronous injection molding and adjustable flow rate comprises an extrusion plasticizing injection device 4, wherein a material storage bag 5 is arranged at the rear end of the extrusion plasticizing injection device 4, a hydraulic push valve body is arranged at the rear end of the material storage bag 5, a main flow passage 12 is arranged at the front end of the material storage bag 5, an adjustable multipoint injection molding diversion mold frame 1 is arranged at the front end of the main flow passage 12, as shown in fig. 2 and 3, a core mold 2 and an outer mold 3 for installing and fixing molds with corresponding specifications are arranged on one side of the adjustable multipoint injection molding diversion mold frame 1, and a mold cavity 6 formed between the core mold 2 and the outer mold 3 is in a shape which is a required product structure; the other side center of reposition of redundant personnel die carrier 1 is moulded plastics to adjustable multiple spot is provided with fuse-element distributor 7, and fuse-element distributor 7 is linked together with sprue 12, and fuse-element distributor 7 department outwards extends two at least subchannels 8, subchannel 8 is by setting up the valve body seat 9 on reposition of redundant personnel die carrier 1 is moulded plastics to adjustable multiple spot and the airtight runner that reposition of redundant personnel die carrier 1 formed is moulded plastics to adjustable multiple spot. A plurality of injection ports 10 are arranged in each sub-runner 8 in an array control manner, the position of each injection port 10 corresponds to a die cavity 6 formed by the core dies 2 and the outer dies 3 with different specifications, the injection ports 10 are communicated with the corresponding die cavities 6, and an adjusting valve 11 for flow adjustment is arranged between each injection port 10 and the sub-runner 8. The adjusting valve 11 comprises an adjusting rod 111 and a valve body 112 for controlling the adjusting rod 111 to extend and retract, the front end of the adjusting rod 111 is located at the injection port 10, and the valve body 112 is fixed on the valve body seat 9.
Preferably, in this embodiment, six elongated runners 8 extend outwards from the melt distributor 7, and the six elongated runners 8 are uniformly distributed around the melt distributor 7. Five injection ports 10 are arranged in each branch flow channel 8, and the injection ports 10 arranged on the six branch flow channels 8 are arranged in a concentric circle mode with the melt distributor 7 as the center. The arrangement and number of the branch channels 8 and the arrangement and number of the injection ports 10 can be designed according to actual conditions, and belong to the protection scope of the invention.
The working principle of the invention is as follows: when the injection molding machine is used, materials in the extrusion plasticizing injection device 4 firstly enter the material storage bag 5, the materials in the material storage bag 5 enter the adjustable multi-point injection molding diversion mold frame 1 from the melt distributor 7 through the main runner 12, and then are dispersed into the diversion channels 8, at the moment, the corresponding injection ports 10 can be opened and the flow can be adjusted according to the core mold 2 and the outer mold 3 with different specifications by controlling the corresponding adjusting valves 11, so that the materials in the diversion channels 8 respectively enter the mold cavity 6 formed by the core mold 2 and the outer mold 3 from the injection ports 10, and a product is formed. The die core mould is simple in structure, convenient to use and simple and convenient to install and disassemble, can be suitable for manufacturing products of different specifications only by replacing the die core 2 and the outer mould 3, saves the production cost, saves the complex procedure of cleaning the batching disc, reduces the waste of materials and saves manpower. And it injects into the die cavity 6 that the mandrel 2 and the external mold 3 formed fast through the mode of multiple spot synchronization to all set up the governing valve 11 that is used for flow control between every sprue 10 and subchannel 8, can adjust control the flow alone, guarantee that die cavity 6 is full of required raw materials fast, accomplish the preparation to the product, guaranteed the plumpness of product, improved the quality of product.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.