CN112743743A - Tapered injection mold of automobile covering part - Google Patents

Abstract

The invention relates to a conical injection mold for an automobile covering part, which belongs to the field of automobile processing facilities, adopts a rectangular injection molding machine, a cuboid-shaped mould shell is horizontally arranged above the left side of the injection molding machine, a triangular V-shaped groove is arranged inside the right side of the mould shell, a triangular mould core is arranged inside the V-shaped groove, the center of the right side surface of the mould core is connected with a cylindrical propelling pipe arranged on the right side of the injection molding machine, the centers in front of and behind the right side surface of the mould core are respectively connected with piston rods of two cylindrical oil cylinders arranged on the right side of the injection molding machine, after the injection molding machine is started and preheated, the heated plasticizer is forcibly pressed into the mold core by a propeller of the injection molding machine, then the mold core is pulled out of the mold shell by a piston rod, a worker quickly takes out a molded plastic part, and the mold core is pushed into the mold shell by the piston rod again for injection molding again.

Description

Tapered injection mold of automobile covering part

Technical Field

The invention discloses a conical injection mold for an automobile covering part, belongs to the field of automobile processing facilities, and particularly relates to injection molding of a conical mold by using a small-tonnage injection molding machine.

Background

The injection mold is a hard mold made of metal, a high-pressure propeller is used for forcibly pressing a high-temperature plasticizer into the hard mold, and then an upper cover and a lower cover of the mold are separated and a molded plastic part is taken out. Because the automobile covering parts are various in types and different in size, the used injection molding machines are also different in size. The size tonnage and the pressure of the injection molding machine are distinguished according to the sectional areas of the upper cover and the lower cover of the mold, while the injection molding machine with large tonnage can inject small molds, but the injection molding machine with small tonnage cannot inject large molds, and the plasticizer can be extruded out from the gap between the upper cover and the lower cover of the mold due to insufficient pressure of the sectional areas of the mold. In order to reduce the cost and diversify equipment, an enterprise uses a small-tonnage injection molding machine to inject a slightly larger mold, and the pressure direction of an upper cover and a lower cover of the mold needs to be changed to make up for the defect of insufficient pressure of the small-tonnage injection molding machine.

Disclosure of Invention

The invention relates to a conical injection mold for automobile covering parts, which solves the defects and adopts a rectangular injection molding machine, wherein a rectangular mold shell is horizontally arranged above the left side of the injection molding machine, a V-shaped groove in a triangular shape is arranged inside the right side of the mold shell, a mold core in a triangular shape is arranged inside the V-shaped groove, the center of the right side surface of the mold core is connected with a cylindrical pushing pipe arranged on the right side of the injection molding machine, the centers of the front and the rear of the right side surface of the mold core are respectively connected with piston rods of two cylindrical oil cylinders arranged on the right side of the injection molding machine, when the injection molding machine is started and preheated, a heated plasticizer is forcibly pressed into the mold core by a propeller of the injection molding machine, then the piston rods pull the mold core out of the mold shell, a.

A conical injection mold for automobile covering parts is characterized by comprising an injection molding machine, a mold shell, a mold core, a pushing pipe, a piston rod, a V-shaped groove, a mounting hole, a plasticizer channel and a plastic part forming groove;

the injection molding machine is rectangular, a mold shell is arranged on the left side of the injection molding machine, a cylindrical propeller is horizontally and horizontally arranged in the center of the right side of the injection molding machine, a hollow cylindrical propeller pipe is horizontally and horizontally arranged on the left side of the propeller through a rectangular support, a cylindrical oil cylinder is horizontally and horizontally arranged on each of the front side and the rear side of the right side of the injection molding machine, and a cylindrical piston rod is horizontally and horizontally arranged on the left side of each of the two oil cylinders through a rectangular support;

the mold shell is in a cuboid shape, a circular mounting hole is vertically formed in the front and the rear of the left side of the mold shell, the insides of the two mounting holes are respectively connected with the upper surface of an injection molding machine through a high-strength bolt, an isosceles triangle V-shaped groove is horizontally formed in the center of the inside of the right side of the mold shell, and the openings of the isosceles triangle V-shaped groove are completely straight and smooth in the right side surface of the mold shell and the upper, lower, front and rear inner walls of the V-shaped groove;

the mold core is isosceles triangle shape, set up in the inside in V type groove, the upper and lower front and back is complete straight and V type groove front and back inner wall size unanimous and laminate completely, the angle on mold core left side is the fillet, the preceding and back of mold core has set up semi-circular or oval-shaped plastic part shaping groove respectively, the right intercommunication of the plastic part shaping groove in the place ahead is through the right of circular shape plasticizer passageway with the plastic part shaping groove at rear, the central authorities of mold core right flank are connected with the left surface of propulsion pipe, the discharging pipe at propulsion pipe left side center passes the right flank of mold core and the central authorities intercommunication of plasticizer passageway, the central authorities at the place ahead of mold core right flank and rear are connected with the left top of two piston rods respectively.

Has the advantages that: the size tonnage and the pressure of the injection molding machine are distinguished according to the sectional areas of the upper cover and the lower cover of the mold, while the injection molding machine with large tonnage can inject small molds, but the injection molding machine with small tonnage cannot inject large molds, and the plasticizer can be extruded out from the gap between the upper cover and the lower cover of the mold due to insufficient pressure of the sectional areas of the mold. The utility model provides a car panel's toper injection mold, adopt rectangular injection molding machine, the mould shell of top horizontal installation cuboid shape on the injection molding machine left side, the inside V type groove that sets up the triangle shape on mould shell right side, the mold core of the internally mounted triangle shape in V type groove, the central authorities of mold core right flank are connected with the cylindrical propulsion pipe of installing on the injection molding machine right side, the place ahead of mold core right flank and the central authorities at rear are connected with the piston rod of installing two cylindrical hydro-cylinders on the injection molding machine right side respectively, open when the injection molding machine and preheat to finish, the propeller of injection molding machine is impressed the heated plasticizing agent inside the mold core by force, then the piston rod pulling mold core is taken out from the mould shell, the workman takes out fashioned plastic part fast, the piston rod.

Drawings

FIG. 1 is a front view of a tapered injection mold for an automotive panel;

FIG. 2 is a schematic structural view of a mold shell, a V-shaped groove and a mounting hole;

FIG. 3 is a schematic structural view of a mold core, a push tube, a piston rod, a plasticizer passage, and a molding groove of a plastic part;

the marks in the above figures are an injection molding machine 1, a mold shell 2, a mold core 3, a propelling pipe 4, a piston rod 5, a V-shaped groove 6, a mounting hole 7, a plasticizer channel 8 and a plastic part forming groove 9.

Detailed Description

The shape and structure of the present invention will now be described in detail with reference to the accompanying drawings and reference numerals:

a conical injection mold for an automobile covering part is characterized by comprising an injection molding machine 1, a mold shell 2, a mold core 3, a propelling pipe 4, a piston rod 5, a V-shaped groove 6, a mounting hole 7, a plasticizer channel 8 and a plastic part forming groove 9;

the injection molding machine 1 is rectangular, a mold shell 2 is arranged on the left side of the upper side of the injection molding machine, a cylindrical propeller is horizontally and horizontally arranged in the center of the right side of the upper side of the injection molding machine, a hollow cylindrical propeller pipe 4 is horizontally and horizontally arranged on the left side of the propeller through a rectangular support, a cylindrical oil cylinder is horizontally and horizontally arranged on each of the front side and the rear side of the right side of the upper side of the injection molding machine, and a cylindrical piston rod 5 is horizontally and horizontally arranged on the left side of each of the two;

the mold shell 2 is cuboid, a circular mounting hole 7 is vertically formed in the front and the rear of the left side of the mold shell, the insides of the two mounting holes 7 are respectively connected with the upper surface of the injection molding machine 1 through a high-strength bolt, an isosceles triangle V-shaped groove 6 is horizontally formed in the center of the right inside of the mold shell, and the openings of the V-shaped groove 6 are completely straight and smooth on the right side surface of the mold shell 2 and the upper, lower, front and rear inner walls of the V-shaped groove 6;

the mold core 3 is isosceles triangle shape, set up in the inside of V type groove 6, the upper and lower front and back is complete straight and V type groove 6 upper and lower front and back inner wall size unanimous and laminate completely, the angle on mold core 3 left side is the fillet, mold core 3's preceding and back have set up semi-circular or oval-shaped plastic part shaping groove 9 respectively, the right of the plastic part shaping groove 9 in the place ahead communicates through the right of the plastic part shaping groove 9 at circular shape plasticizer passageway 8 with the rear, the central authorities of mold core 3 right flank are connected with the left surface of propulsion pipe 4, the discharging pipe at propulsion pipe 4 left side center passes mold core 3's right flank and the central authorities of plasticizer passageway 8 and communicates, the place ahead of mold core 3 right flank and the central authorities at rear are connected with the left top end of two.

When the conical injection mold for the automobile covering part is used, a worker firstly opens a preheating system of an injection molding machine to preheat a propeller of the injection molding machine to a normal working temperature, then fills a corresponding plastic rice into a bin of the injection molding machine, opens a hydraulic system and a propulsion system of the injection molding machine to start normal work, controls the hydraulic system to drive two oil cylinders to force two piston rods to firmly press a mold core into a V-shaped groove of a mold shell through an operation key on a control box, then controls the propeller to rotate to push the plastic rice into the propulsion pipe, the plastic rice is heated by an external heating system in the propulsion pipe to be melted into a plasticizer, the plastic rice continuously pushed leftwards by the rear propeller is pushed into a plasticizer channel in the mold core, the plasticizer entering the plasticizer channel is forced into a plastic part molding groove by the plasticizer in the rear propulsion pipe, at the moment, a worker observes whether the reading of a pressure gauge on the control box reaches a specified value, a sensor informs the control box to control the propeller to suspend propelling plastic rice when the pressure in the propeller reaches a set value, the control box controls a hydraulic system to drive two oil cylinders to synchronously retract two piston rods rightwards, the piston rods retract rightwards and simultaneously synchronously and forcibly pull the propeller, the propeller and the mold core to the right to a set distance, the mold core is pulled to the right by the length of 3/4, the top end of the left side of the mold core is still positioned in the right side of the V-shaped groove, at the moment, the worker quickly prys an injection molding plastic part from the upper surface of the mold core, then the control box is driven by a key on the control box to control the hydraulic system to drive the two oil cylinders to push the two piston rods leftwards again, so that the propeller, the propulsion pipe, and at the moment, the worker starts the propulsion system again to enable the propeller to forcibly push the plastic into the propulsion pipe again to melt, the melted plasticizer is pushed into the mold core again to form a plastic part, and the worker repeats the operation of the injection molding machine according to the steps to enable the conical injection mold to circularly inject the plastic part with the same shape as the mold core. The mold core and the V-shaped groove are combined in a conical mode, the mold core is more and more tightly extruded into the V-shaped groove, and the oil cylinder is under the same pressure, the conical fit is larger than the pressure generated by plane fit, so that an enterprise can use a small-tonnage injection molding machine to inject a slightly larger mold in order to reduce cost and diversify equipment.

The foregoing is merely a general disclosure of the invention and is not intended to limit the invention in any way; those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims.

Claims (1)

1. A conical injection mold for automobile covering parts is characterized by comprising an injection molding machine, a mold shell, a mold core, a pushing pipe, a piston rod, a V-shaped groove, a mounting hole, a plasticizer channel and a plastic part forming groove;

the injection molding machine is rectangular, a mold shell is arranged on the left side of the injection molding machine, a cylindrical propeller is horizontally and horizontally arranged in the center of the right side of the injection molding machine, a hollow cylindrical propeller pipe is horizontally and horizontally arranged on the left side of the propeller through a rectangular support, a cylindrical oil cylinder is horizontally and horizontally arranged on each of the front side and the rear side of the right side of the injection molding machine, and a cylindrical piston rod is horizontally and horizontally arranged on the left side of each of the two oil cylinders through a rectangular support;

the mold shell is in a cuboid shape, a circular mounting hole is vertically formed in the front and the rear of the left side of the mold shell, the insides of the two mounting holes are respectively connected with the upper surface of an injection molding machine through a high-strength bolt, an isosceles triangle V-shaped groove is horizontally formed in the center of the inside of the right side of the mold shell, and the openings of the isosceles triangle V-shaped groove are completely straight and smooth in the right side surface of the mold shell and the upper, lower, front and rear inner walls of the V-shaped groove;

the mold core is isosceles triangle shape, set up in the inside in V type groove, the upper and lower front and back is complete straight and V type groove front and back inner wall size unanimous and laminate completely, the angle on mold core left side is the fillet, the preceding and back of mold core has set up semi-circular or oval-shaped plastic part shaping groove respectively, the right intercommunication of the plastic part shaping groove in the place ahead is through the right of circular shape plasticizer passageway with the plastic part shaping groove at rear, the central authorities of mold core right flank are connected with the left surface of propulsion pipe, the discharging pipe at propulsion pipe left side center passes the right flank of mold core and the central authorities intercommunication of plasticizer passageway, the central authorities at the place ahead of mold core right flank and rear are connected with the left top of two piston rods respectively.

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