CN214687712U - Auxiliary inner ejection mechanism for movable die insert of plastic tray die - Google Patents

Abstract

An auxiliary inner ejection mechanism for a movable mould insert of a plastic tray mould comprises a fixed mould compound plate and a movable mould compound plate, wherein a base plate is arranged below the fixed mould compound plate, a fixed mould plate is arranged below the base plate, a fixed mould insert is arranged in the fixed mould plate, mould feet are arranged on the movable mould compound plate, a movable mould plate is arranged on the mould feet, a movable mould side block and a movable mould insert are arranged on the movable mould plate, the movable mould insert is matched with the fixed mould plate, the movable mould side block is matched with the fixed mould plate, an injection-molded plastic tray is arranged between the movable mould side block and the movable mould insert as well as between the fixed mould plate and the fixed mould insert, an upper thimble plate and a lower thimble plate are arranged between the mould feet, the upper thimble plate is connected with a thimble, the thimble penetrates through the movable mould plate and the movable mould insert to be contacted with the plastic tray, hydraulic cavities and hydraulic holes are respectively arranged at four corners of the movable mould plate, oil joints are arranged on the hydraulic holes, the oil joints are connected with oil passages, a piston block is arranged in the hydraulic cavities, and high-pressure oil is injected between the piston block and the hydraulic cavities, the piston block is connected with a corresponding movable die insert.

Description

Auxiliary inner ejection mechanism for movable die insert of plastic tray die

Technical Field

The utility model relates to a plastics tray mould movable mould inserts supplementary interior ejecting mechanism belongs to the injection mold field.

Background

The plastic tray mold is used for producing plastic products, such as plastic trays and the like, after the plastic trays are subjected to injection molding, the ejector plate is driven by power, the ejector plate drives the ejector pins to jack the plastic trays for a certain distance, the bottom feet of the plastic trays are still left in the movable mold of the injection mold, and then the plastic trays are manually taken out by workers. Because the volume of the plastic tray is large, and after the plastic tray is molded, four sides and bottom feet of the plastic tray are embedded in the movable mold and can be ejected by a large ejecting force, a plurality of ejector pins are arranged on an ejector plate of the plastic mold, and the ejector pins are long in ejection stroke and large in pressure when being ejected, are easy to bend or break, and need to be normally stopped for maintenance and replacement, so that the production efficiency is influenced.

Disclosure of Invention

The utility model aims at overcoming prior art's shortcoming, providing an adopt built-in supplementary ejecting structure, supplementary thimble is ejecting, makes the tray drawing of patterns more smooth, improves production efficiency's plastics tray mould movable mould and inserts supplementary interior ejecting mechanism.

The utility model discloses plastics tray mould movable mould inserts supplementary interior ejection mechanism's technical scheme is: comprises a fixed die compound plate and a movable die compound plate, wherein a base plate is arranged below the fixed die compound plate, a fixed die plate is arranged below the base plate, a fixed die insert is arranged in the fixed die plate, a die pin is arranged on the movable die compound plate, a movable die plate is arranged on the die pin, a movable die side block and a movable die insert are arranged on the movable die plate, the movable die insert is matched with the fixed die insert, the movable die side block is matched with the fixed die plate, plastic trays for injection molding are arranged between the movable mould side block and the movable mould insert block and between the fixed mould plate and the fixed mould insert block, an upper thimble plate and a lower thimble plate are arranged between the mould feet, the upper thimble plate is connected with a thimble, the thimble passes through the movable mould plate and the movable mould insert to be contacted with the plastic tray, it is characterized in that the four corners of the movable template are respectively provided with a hydraulic cavity and a hydraulic hole, the hydraulic hole is provided with an oil joint, the oil joint is connected with an oil circuit, a piston block is arranged in the hydraulic cavity, high-pressure oil is injected between the piston block and the hydraulic cavity, and the piston block is connected with a corresponding movable die insert.

The utility model discloses an ejection mechanism in plastics tray mould movable mould is inserted in assistance, during the drawing of patterns, at first drive mould movable mould part and cover half part die sinking by injection molding machine power, the die sinking is accomplished the back, the oil circuit oil feed, in pouring high-pressure oil into the hydraulic chamber, promote the piston piece and upwards slide, the piston piece drives the movable mould that corresponds and inserts, the movable mould is inserted and is driven plastics tray jack-up, and simultaneously, go up thimble board and thimble board drive thimble down, the thimble drives plastics tray jack-up, the movable mould that distributes at four angles promptly inserts and the thimble jacks up plastics tray together, can effectively reduce the ejecting pressure of thimble, alleviate the thimble burden, prolong thimble life, and the production efficiency is improved.

The utility model discloses a plastics tray mould movable mould is inserted supplementary interior ejection mechanism, the piston piece on set up spacing hole, the spacing hydro-cylinder of the movable mould outer wall mounting that the piston piece corresponds, connect the gag lever post on the spacing hydro-cylinder, during moulding plastics, the gag lever post passes spacing hole, carries on spacingly to the piston piece, can prevent effectively that the movable mould from inserting the mould that rises.

Drawings

FIG. 1 is a schematic structural view of the auxiliary inner ejection mechanism of the movable die insert of the present invention;

fig. 2 is a perspective view of the assembly relationship of the movable mold insert auxiliary inner ejection mechanism of the present invention.

Detailed Description

The utility model relates to a plastic tray die movable mould insert auxiliary inner ejection mechanism, as shown in figure 1 and figure 2, comprising a die fixed mould compound plate 1 and a movable mould compound plate 2, a backing plate 3 is arranged under the fixed mould compound plate, a fixed mould plate 4 is arranged under the backing plate, a fixed mould insert 5 is arranged in the fixed mould plate, a mould foot 6 is arranged on the movable mould compound plate, a movable mould plate 7 is arranged on the mould foot, a movable mould side block 8 and a movable mould insert 9 are arranged on the movable mould plate, the movable mould insert 9 is matched with the fixed mould plate 5, the movable mould side block 8 is matched with the fixed mould plate 4, an injection moulding plastic tray 10 is arranged between the movable mould side block 8 and the movable mould insert 9 as well as the fixed mould plate 4 and the fixed mould plate insert 5, an upper thimble plate 11 and a lower thimble plate 12 are arranged between the mould foot 6, an thimble 13 is connected on the upper thimble plate 11, the thimble 13 passes through the movable mould plate and the movable mould insert to contact with the plastic tray 10, a hydraulic cavity 15 and a hydraulic hole 16 are respectively arranged at the four corners of the movable mould plate 7, an oil connector 17 is arranged on the hydraulic hole, the oil connector 17 is connected with an oil way, a piston block 18 is arranged in the hydraulic cavity, high-pressure oil 19 is injected between the piston block 18 and the hydraulic cavity, and the piston block 18 is connected with a corresponding movable die insert 8. During demolding, firstly, the movable mold part and the fixed mold part of the mold are driven by the power of an injection molding machine to be opened, after the mold opening is completed, oil is fed into an oil path, high-pressure oil is injected into the hydraulic cavity 15 to push the piston block 18 to slide upwards, the piston block 18 drives the corresponding movable mold insert 8, the movable mold insert 8 drives the plastic tray 10 to jack up, meanwhile, the upper ejector plate 11 and the lower ejector plate 12 drive the ejector pins 13, the ejector pins 13 drive the plastic tray 10 to jack up, namely, the movable mold inserts distributed at four corners and the ejector pins jack up the plastic tray together, the ejection pressure of the ejector pins can be effectively reduced, the burden of the ejector pins is reduced, the service life of the ejector pins is prolonged, and the production efficiency is improved. The piston block 18 is provided with a limiting hole 20, a limiting oil cylinder 21 is arranged on the outer wall of the movable mould plate corresponding to the piston block, a limiting rod 22 is connected to the limiting oil cylinder, and during injection, the limiting rod 22 penetrates through the limiting hole 20 to limit the piston block, so that the movable mould insert can be effectively prevented from expanding the mould.

Claims (2)

1. An auxiliary inner ejection mechanism for a movable mould insert of a plastic tray mould comprises a fixed mould compound plate (1) and a movable mould compound plate (2), a base plate (3) is arranged below the fixed mould compound plate, a fixed mould plate (4) is arranged below the base plate, a fixed mould insert (5) is arranged in the fixed mould plate, a mould foot (6) is arranged on the movable mould compound plate, a movable mould plate (7) is arranged on the mould foot, a movable mould side block (8) and a movable mould insert (9) are arranged on the movable mould plate, the movable mould insert (9) is matched with the fixed mould insert (5), the movable mould side block (8) is matched with the fixed mould plate (4), an injection-molded plastic tray (10) is arranged between the movable mould side block (8) and the movable mould insert (9) and between the fixed mould plate (4) and the fixed mould insert (5), an upper ejector pin plate (11) and a lower ejector pin plate (12) are arranged between the mould foot (6), an ejector pin (13) is connected onto the upper ejector pin (11), and the ejector pin (13) penetrates through the movable mould plate and the movable mould insert to be contacted with the plastic tray (10), the die is characterized in that the four corners of the movable die plate (7) are respectively provided with a hydraulic cavity (15) and a hydraulic hole (16), an oil joint (17) is arranged on the hydraulic hole, the oil joint (17) is connected with an oil way, a piston block (18) is arranged in the hydraulic cavity, high-pressure oil (19) is injected between the piston block (18) and the hydraulic cavity, and the piston block (18) is connected with a corresponding movable die insert (9).

2. The auxiliary inner ejection mechanism for the movable die insert of the plastic tray die as claimed in claim 1, wherein the piston block (18) is provided with a limiting hole (20), a limiting cylinder (21) is mounted on the outer wall of the movable die plate corresponding to the piston block, the limiting cylinder is connected with a limiting rod (22), and the limiting rod (22) passes through the limiting hole (20).

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