CN103817883A

CN103817883A - Compressed air demoulding device for thin-walled deep-cavity mould

Info

Publication number: CN103817883A
Application number: CN201210490387.4A
Authority: CN
Inventors: 陈海央
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-17
Filing date: 2012-11-17
Publication date: 2014-05-28

Abstract

The invention discloses a compressed air demoulding device for a thin-walled deep-cavity mould. The compressed air demoulding device comprises an air source (1), an air passage (2), an air tip (3), an air opening (4), an air tap (41), a quick coupling (5), a static die (6) and a moving die (7). The compressed air demoulding device adopts a pneumatic demoulding technology solution that blowing air points are arranged at different positions of the mould and a plastic product can be separated from the mold core of the moving die through an air cushion of compressed air and the pushing role of compressed air, avoids the waste of labor, time, materials and energies, high cost and low efficiency existing in the hydraulic ejection mode of the prior art, and uses the pneumatic demoulding technology solution to replace the hydraulic ejection mode of the prior art so as to simplify the structure of mould. Thus, the plastic injection mould manufacture and the plastic injection process of thin-walled deep-cavity plastic products achieve the purposes of labor saving, time saving, material saving, energy saving, low cost and high efficiency.

Description

The compressed-air ejection device of thin wall deep cavity mould

Technical field

The present invention relates to a kind of stripper apparatus of injection mold, specifically refer to the compressed-air ejection device of a kind of thin wall deep cavity mould that is applied in injection mo(u)lding thin wall deep cavity plastic member product.

Background technology

In Injection Industry, there is the plastic products structure of considerable part to there is the dark chamber of thin-walled feature, the mould of prior art design is to rely on hydraulic ram (push rod) ejecting mechanism to realize the plastic member product demoulding, consult Fig. 2,, form ejecting mechanism by the mould pin 01 of mould, top board 02, jacking block (stripper plate) 03 etc., utilize hydraulic injection molding machine powered mould dynamic model top board 02 to move forward, top board 02 drives jacking block 03 directly to promote goods and moves, and reaches the object that plastic member product 08 departs from dynamic mould core 71; For goods being ejected to core completely, the height of General Requirements mould pin is greater than the degree of depth of goods, to meet the needs of ejection stroke.Because the parts such as mould pin, top board of ejecting mechanism need consume a large amount of steel, therefore total material and the just height of processing cost of mould; Ejecting mechanism mould foot section has increased the total height of mould, and mould total height is higher, the impulse stroke that die sinking, mold closing need is longer, just need the injection machine of large specification (large-tonnage clamp force) to carry out supporting injection moulding, cause injection cycle long (time-consuming), the cost of large, the every mould of Shooting Technique energy consumption time of plastic member product high, low in economic efficiency.For these reasons, prior art exist take a lot of work, time-consuming, expense material, power consumption, high, the inefficient deficiency of cost.

Summary of the invention

The present invention is directed to the deficiency that above-mentioned prior art exists, adopt at mould different parts and arrange air blowing point, make plastic member product depart from the Pneumatic demould technical scheme of dynamic mould core by compressed-air actuated air cushion thrusting action, a kind of compressed-air ejection device of thin wall deep cavity mould is provided, be intended to the hydraulic pressure pushing method with this alternative prior art, simplify mould structure, make that the injection mold manufacture of thin wall deep cavity plastic member product and Shooting Technique reach saving of labor, save time, material-saving, the object that energy-conservation, cost is low, efficiency is high.

The object of the present invention is achieved like this: a kind of compressed-air ejection device of thin wall deep cavity mould, comprise source of the gas, air flue, the gas tip, gas port, valve, snap joint, quiet mould, dynamic model, wherein: described source of the gas is to be made up of air compressor machine, air accumulator, multichannel independence magnetic valve and gas pipeline, electric control unit, can stablize the compressed-air actuated system of 0.5～0.8Mpa that provides; Described air flue is to be arranged on the how logical of quiet mould, dynamic model inside and air-channel system independently; The described gas tip is to be arranged on the die cavity chamber wall of quiet mould and the core of dynamic model along on quiet dynamic model folding axis direction wall, is connected with many airways separately, and its plug is by pneumatic unlatching, the compressed air outlet parts of the sealing that automatically resets during without air pressure; Described gas port is some uniform the be arranged on core of dynamic model and communicating with many airways of core mold insert junction surface Side wall, and gap length is less than the flute profile slit of 0.1mm; Described valve is to communicate with separated air flue, is located at the jet hole on dynamic model die joint; Described snap joint is to be arranged on quiet mould, dynamic model Side wall, the compressed air communicating with the air flue parts of plugging into; Described quiet mould is in mould, is arranged on the static working face of injection machine when work, plugs into injection port, motionless when folding mould, the part of carrying goods mould form; Described dynamic model is in mould, when work, be arranged on injection machine motion working face, when folding mould after before motion, the part of carrying goods model core.

Operation principle:

Matched moulds, injection moulding, pressurize, complete until cooling; The compressed air that source of the gas provides is subject to each way solenoid valve control (manually or automatically, magnetic valve is controlled by injection machine computer controller), and the snap joint of Jing Ge road enters in mould air flue separately successively; Die sinking simultaneously, quiet mould gas tip magnetic valve is opened, compressed air backs down the plug of the gas tip that is located at die cavity and blows, dynamic model retreats and pulls out the solidifying material of cast gate with plastic member product die sinking, under the acting in conjunction of compressed air and package power (frictional force of goods and core), plastic member product separates with die cavity; Die sinking completes, dynamic model gas tip magnetic valve is opened, compressed air backs down the plug of the gas tip that is located at dynamic model top and blows, and promotes plastic member product and separates forward, simultaneously, compressed air enters by gas port between the Side wall and plastic member product of core, and form the auxiliary plastic member product disengaging of air cushion layer generation lubricating effect core, and time delay is after several seconds, and dynamic model valve magnetic valve is opened, compressed air is blown forward by the valve that is located at dynamic model die joint, and powerful air-flow promotes plastic member product and finally comes off.

The present invention adopts above-mentioned Pneumatic demould technical scheme to substitute the hydraulic pressure pushing method of prior art, simplify mould structure, made that the injection mold manufacture of thin wall deep cavity plastic member product and Shooting Technique have reached saving of labor, save time, material-saving, the object that energy-conservation, cost is low, efficiency is high.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the compressed-air ejection device of thin wall deep cavity mould of the present invention;

Fig. 2 is the schematic diagram of the hydraulic mandril ejector mechanism die of prior art;

Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but should not be construed as any limitation of the invention.

In figure: source of the gas 1, air flue 2, the gas tip 3, gas port 4, valve 41, snap joint 5, quiet mould 6, die cavity 61, dynamic model 7, core 71, core mold insert 72, base plate 73, plastic member product 8, mould pin 01, top board 02, jacking block (stripper plate) 03, computer controller 04, dynamic model gas tip magnetic valve 05, dynamic model valve magnetic valve 06, quiet mould gas tip magnetic valve 07.

The specific embodiment

Consult Fig. 1, the compressed-air ejection device of thin wall deep cavity mould of the present invention, comprise source of the gas 1, air flue 2, the gas tip 3, gas port 4, valve 41, snap joint 5, quiet mould 6, dynamic model 7, wherein: described source of the gas 1, for to be made up of air compressor machine, air accumulator, multichannel independence magnetic valve and gas pipeline, electric control unit, can be stablized the compressed-air actuated system of 0.5～0.8Mpa that provides; Described air flue 2 is for being arranged on the how logical of quiet mould 6, dynamic model 7 inside and air-channel system independently; The described gas tip 3 is for being arranged on the die cavity 61 chamber walls of quiet mould 6 and the core 71 of dynamic model 7 along on quiet dynamic model folding axis direction wall, is connected with many airways 2 separately, and its plug is by pneumatic unlatching, the compressed air outlet parts that automatically reset during without air pressure and seal; Described gas port 4 is some uniform the be arranged on core 71 of dynamic model 7 and communicating with many airways 2 of core mold insert 72 junction surface Side walls, and gap length is less than the flute profile slit of 0.1mm; Described valve 41, for what communicate with separated air flue 2, is located at the jet hole on dynamic model 7 die joints; Described snap joint 5 is for to be arranged on quiet mould 6, dynamic model 7 Side walls, the compressed air communicating with air flue 2 parts of plugging into;

Described quiet mould 6 is in mould, is arranged on the static working face of injection machine when work, plugs into injection port, motionless when folding mould, the part of carrying goods mould form 61; Described dynamic model 7 is in mould, when work, be arranged on injection machine motion working face, when folding mould after before motion, the part of carrying goods model core 71.

Operation principle:

Matched moulds, injection moulding, pressurize, complete until cooling; The compressed air that source of the gas 1 provides is subject to each way solenoid valve control (manually or automatically, each magnetic valve is controlled by injection machine computer controller 04), and Jing Ge road snap joint 5 enters in mould air flue 2 separately successively; Die sinking simultaneously, quiet mould gas tip magnetic valve 07 is opened, compressed air backs down the plug of the gas tip 3 that is located at die cavity 61 and blows, dynamic model 7 retreats and pulls out the solidifying material of cast gate with plastic member product 8 die sinkings, under the acting in conjunction of compressed air and package power (frictional force of goods and core), plastic member product 8 separates with die cavity 61; Die sinking completes, dynamic model gas tip magnetic valve 05 is opened, compressed air backs down the plug of the gas tip 3 that is located at dynamic model 7 tops and blows, promoting plastic member product 8 separates forward, simultaneously, compressed air enters by gas port 4 between the Side wall and plastic member product 8 of core 71, and form air cushion layer and produce the auxiliary plastic member product 8 of lubricating effect and depart from core 71, after time delay several seconds, dynamic model valve magnetic valve 06 is opened, compressed air is blown forward by the valve 41 that is located at dynamic model 7 die joints, and powerful air-flow promotes plastic member product 8 and finally comes off.

Claims

1. the compressed-air ejection device of thin wall deep cavity mould, comprise source of the gas (1), air flue (2), the gas tip (3), gas port (4), valve (41), snap joint (5), quiet mould (6), dynamic model (7), it is characterized in that: described source of the gas (1), for to be made up of air compressor machine, air accumulator, multichannel independence magnetic valve and gas pipeline, electric control unit, can provide the compressed-air actuated system of 0.5～0.8Mpa; Described air flue (2) is for being arranged on inner how logical of quiet mould (6), dynamic model (7) and air-channel system independently; The described gas tip (3) is for being arranged on die cavity (61) the chamber wall of quiet mould (6) and the core (71) of dynamic model (7), along on quiet dynamic model folding axis direction wall, be connected with many airways (2) separately, its plug leans on pneumatic unlatching, the compressed air outlet parts of the sealing that automatically resets during without air pressure; Described gas port (4) is some uniform the be arranged on core (71) of dynamic model (7) and communicating with many airways (2) of core mold insert (72) junction surface Side wall, and gap length is less than the flute profile slit of 0.1mm; Described valve (41), for what communicate with separated air flue (2), is located at the jet hole on dynamic model (7) die joint; Described snap joint (5) is for to be arranged on quiet mould (6), dynamic model (7) Side wall, the compressed air communicating with air flue (2) parts of plugging into; Described quiet mould (6) is in mould, is arranged on the static working face of injection machine when work, plugs into injection port, motionless when folding mould, the part of carrying goods mould forms (61); Described dynamic model (7) is in mould, when work, be arranged on injection machine motion working face, when folding mould after before motion, carrying goods model cores (71) part.