阅读说明：本技术 一种一出多吹塑成型模头结构 (One-outlet multi-blow molding die structure ) 是由 夏玉洁 曹春林 邢进 汪松 洪明忠 于 2019-11-25 设计创作，主要内容包括：本发明公开了一种一出多吹塑成型模头结构,其包括分流板、与分流板的出料口相连接的储料缸、安装在储料缸内的活塞杆、连接在储料缸的挤出端上的挤出口模以及安装在挤出口模下方的成型模；所述分流板包括一个进料道、2的N次方个出料口以及连通进料道与出料口的分流道,所述储料缸的外侧轴向层叠设置有多个独立的电热加热块,所述活塞杆内设置有电热芯棒,所述挤出口模包括口模安装板、外口模及内模芯。本发明的分流道采用对称的多层衣架式结构和圆形圆角结构,储料缸和活塞杆采用多个加热模块进行精细化温度控制,具有物料出料速度一致性好、出料流畅性好、运行稳定性好和产品均一性好的优点。(The invention discloses a one-outlet multi-blow molding die structure which comprises a splitter plate, a storage cylinder connected with a discharge port of the splitter plate, a piston rod arranged in the storage cylinder, an extrusion port die connected to an extrusion end of the storage cylinder and a molding die arranged below the extrusion port die; the splitter plate comprises a feed channel, 2N-power discharge ports and a splitter channel communicated with the feed channel and the discharge ports, a plurality of independent electric heating blocks are axially stacked on the outer side of the storage cylinder, an electric heating core rod is arranged in the piston rod, and the extrusion neck ring comprises a neck ring mounting plate, an outer neck ring and an inner mold core. The sub-runners of the invention adopt a symmetrical multi-layer clothes hanger type structure and a round fillet structure, and the storage cylinder and the piston rod adopt a plurality of heating modules for fine temperature control, thus having the advantages of good consistency of material discharging speed, good discharging smoothness, good operation stability and good product uniformity.)

1. The utility model provides a many blow molding die structure, its characterized in that of one play: the extrusion device comprises a splitter plate, a storage cylinder connected with a discharge port of the splitter plate, a piston rod arranged in the storage cylinder, an extrusion port die connected with an extrusion end of the storage cylinder, and a forming die arranged below the extrusion port die;

the flow distribution plate comprises a feed channel, 2 discharge ports of power N and flow distribution channels communicating the feed channel and the discharge ports, the feed channel is connected with an extrusion port of the screw extruder, the cross section of each flow distribution channel is circular, the corners of each flow distribution channel are rounded, each flow distribution channel comprises N layers, and each flow distribution channel is divided downwards into two flow distribution channels of the next layer which are axially symmetrical;

a feed inlet communicated with the discharge outlet of the flow distribution plate is formed in the side wall of the storage cylinder, and a plurality of independent electric heating blocks are axially stacked on the outer side of the storage cylinder; an electric heating core rod is arranged in the piston rod, an exhaust gap is reserved between the piston rod and the inner wall of the material storage cylinder, a piston fixing plate is arranged at the upper end of the piston rod, and the piston fixing plate is driven by a hydraulic cylinder arranged above the piston fixing plate;

the extrusion die comprises a die mounting plate, an outer die and an inner die core, a die adjusting sleeve is mounted on the die mounting plate, a plurality of adjusting bolts which are radially communicated are symmetrically arranged on the die adjusting sleeve, the outer die is clamped and mounted in the die adjusting sleeve through the adjusting bolts, and the inner die core is arranged in the outer die.

2. A multi-shot blow molding die structure as claimed in claim 1, wherein: the flow distribution plate adopts a Harvard block assembly structure.

3. A multi-shot blow molding die structure as claimed in claim 1, wherein: the forming die comprises a fixed die, a movable die and a product cavity formed by combining the fixed die and the movable die.

Technical Field

The invention relates to a one-output multi-blow molding die structure, and belongs to the technical field of blow molding.

Background

In the plastic parts of the automobile, a plurality of tubular parts are produced by adopting a blow molding process, and the existing blow molding die head mainly has a structure, so that the defect of low production efficiency exists. Adopt the promotion production efficiency that a multimode structure can show, but when the production of a current multimode structure, appear product homogeneity and poor stability not enough easily. The forming reasons are various, for example, the material discharging speed is inconsistent due to inconsistent length and size of each branch flow channel in the sub-flow channel; if the corner of the sub-runner is a straight-going right-angle structure, materials are easy to accumulate at the corner to cause poor discharging smoothness and inconsistent discharging speed; for example, the molding defects and poor uniformity caused by the inconsistency of the local temperatures in the material piston cylinder.

Disclosure of Invention

In order to solve the above disadvantages, the invention provides a multi-blow molding die structure, which adopts the following technical scheme:

the utility model provides a many blow molding die structure, its characterized in that of one play: the extrusion device comprises a splitter plate, a storage cylinder connected with a discharge port of the splitter plate, a piston rod arranged in the storage cylinder, an extrusion port die connected to an extrusion end of the storage cylinder, and a forming die arranged below the extrusion port die.

The flow distribution plate comprises a feed channel, 2 discharge ports of power N and flow distribution channels communicating the feed channel and the discharge ports, the feed channel is connected with an extrusion port of the screw extruder, the cross section of each flow distribution channel is circular, the corners of each flow distribution channel are rounded, each flow distribution channel comprises N layers, and each flow distribution channel is divided downwards into two flow distribution channels of the next layer in axial symmetry.

A feed inlet communicated with the discharge outlet of the flow distribution plate is formed in the side wall of the storage cylinder, and a plurality of independent electric heating blocks are axially stacked on the outer side of the storage cylinder; an electric heating core rod is arranged in the piston rod, an exhaust gap is reserved between the piston rod and the inner wall of the material storage cylinder, a piston fixing plate is arranged at the upper end of the piston rod, and the piston fixing plate is driven by a hydraulic cylinder arranged above the piston fixing plate.

The extrusion die comprises a die mounting plate, an outer die and an inner die core, a die adjusting sleeve is mounted on the die mounting plate, a plurality of adjusting bolts which are radially communicated are symmetrically arranged on the die adjusting sleeve, the outer die is clamped and mounted in the die adjusting sleeve through the adjusting bolts, and the inner die core is arranged in the outer die.

The forming die comprises a fixed die, a movable die and a product cavity formed by combining the fixed die and the movable die.

The flow distribution plate adopts a Harvard block assembly structure.

Compared with the prior art, the invention has the beneficial effects that: the sub-runners adopt symmetrical multi-layer coat hanger type structures, and the lengths and sizes of the sub-runners are consistent, so that the consistency of material discharging speed is realized; the branch channel adopts a round fillet structure, so that material blockage is avoided, and the material discharging smoothness and the speed consistency are good; heating modules are arranged on the storage cylinder and the piston rod, the consistency of the temperature of the material in the radial space in the storage cylinder is guaranteed, a plurality of independent heating modules are arranged in the axial direction of the storage cylinder for fine temperature control, and the consistency of the temperature of the material in the axial space in the storage cylinder is guaranteed. The one-outlet multi-die structure has the advantages of good consistency of material discharging speed, good discharging smoothness, good operation stability and good product uniformity.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the splitter plate of the present invention;

FIG. 3 is a schematic view of the structure of an extrusion die of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.