CN110861264A

CN110861264A - Reinforced (rfd) injection mold of compound die

Info

Publication number: CN110861264A
Application number: CN201910898059.XA
Authority: CN
Inventors: 沈小红
Original assignee: Deqing Chengda Metal Materials Co Ltd
Current assignee: Deqing Chengda Metal Materials Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-03-06

Abstract

The invention discloses an injection mold for mold closing reinforcement, which comprises a fixed mold and a movable mold, wherein a mold body is installed on the movable mold, the mold body is inserted in the fixed mold, a plurality of clamping grooves are formed in the periphery of the mold body, the movable mold is fixedly connected with a fixed shaft corresponding to the clamping grooves, one end of the fixed shaft is fixedly connected with a spiral memory metal ring, the caliber of an opening of each clamping groove is larger than that of the bottom of the clamping groove, the spiral memory metal ring is cylindrical in a low-temperature environment, the spiral memory metal ring is conical in a high-temperature environment, and the fixed shaft is made of copper. According to the invention, the sensitivity of the memory metal to the temperature is utilized, different shapes are presented at different temperatures, the diameter of the spiral memory metal ring is enlarged in the deformation process under the high-temperature environment, and the spiral memory metal ring moves towards the bottom in order to adapt to the deformation process due to the limitation of the shape of the clamping groove, so that the movable die is integrally pulled to approach the fixed die.

Description

Reinforced (rfd) injection mold of compound die

Technical Field

The invention relates to the technical field of molds, in particular to an injection mold for mold closing and reinforcing.

Background

The mould is a mould and a tool for obtaining a required product by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production, the mould is a tool for manufacturing a formed article, the tool is composed of various parts, different moulds are composed of different parts, and the processing of the appearance of the article is realized mainly by changing the physical state of a formed material.

However, in the process of injection molding, the situation of flash is easy to occur, the flash is often generated due to the insecure of the mold closing of the fixed mold and the movable mold, so that the molten material flows out from a gap of the mold closing to form an excessive edge part, although the generation of the flash does not affect the whole of the injection molded part, the later processing procedure is increased, the manufacturing cost of the part is correspondingly increased, the firmness of the mold closing completely depends on the magnitude of the power action, namely the power action of the air cylinder, and the air cylinder cannot have the upward and downward acting force.

Disclosure of Invention

The invention aims to solve the defects in the prior art, such as: the flash condition is easy to occur in the injection molding process, namely the excessive edge part formed by the flowing of the molten material from the gap of the mold closing is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a reinforced injection mold of compound die, includes cover half and movable mould, install the model body on the movable mould, the model body is inserted and is established in the cover half, a plurality of draw-in grooves have been seted up around the model body, the fixed axle that movable mould fixedly connected with and draw-in groove correspond, the one end fixedly connected with spiral memory metal circle of fixed axle, the bore of draw-in groove open-ended is greater than the bore of bottom.

Preferably, the spiral memory metal ring is cylindrical in a low-temperature environment, the spiral memory metal ring is conical in a high-temperature environment, and the fixing shaft is made of copper.

Preferably, the caliber of the opening of the clamping groove is the same as the caliber of one end, close to the fixed shaft, of the spiral memory metal ring.

Preferably, the fixed die is provided with a die groove, and the die body is inserted in the die groove.

Compared with the prior art, the invention has the beneficial effects that:

1. utilize the sensitivity of memory metal to the temperature, and present different forms under different temperatures, utilize spiral memory metal circle to take place the in-process diameter that deforms under high temperature environment and grow, because the restriction of draw-in groove shape, then spiral memory metal circle will remove to the bottom in order to adapt to the process of deformation and drag, and then whole pulling movable mould is close to the cover half.

2. Utilize the injection moulding in-process can release a large amount of heats, the power of the in-process of cooperation memory metal deformation is said, strengthens the inseparable degree between the two of compound die process to avoid the problem of the excessive hourglass of in-process material of moulding plastics, avoid the production of overlap in the time of then the shaping.

Drawings

FIG. 1 is a schematic structural diagram of a reinforced injection mold according to the present invention;

fig. 2 is a schematic structural diagram at a in fig. 1.

In the figure: 1 fixed die, 2 movable die, 3 model body, 4 spiral memory metal ring, 5 draw-in grooves, 6 fixed axle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, an injection mold for mold assembly reinforcement comprises a fixed mold 1 and a movable mold 2, wherein a mold body 3 is installed on the movable mold 2, the mold body 3 is inserted into the fixed mold 1, a plurality of clamping grooves 5 are formed around the mold body 3, the movable mold 2 is fixedly connected with a fixed shaft 6 corresponding to the clamping grooves 5, one end of the fixed shaft 6 is fixedly connected with a spiral memory metal ring 4, the opening aperture of each clamping groove 5 is larger than the aperture of the bottom, the spiral memory metal ring 4 is cylindrical in a low-temperature environment, the spiral memory metal ring 4 is conical in a high-temperature environment, the fixed shaft 6 is made of copper, the copper is convenient for heat conduction, the cylindrical structure is convenient for smooth insertion into the clamping grooves 5, the spiral memory metal ring 4 after high-temperature deformation has the aperture increased due to structural change, and the aperture will be dragged due to the limitation of the surrounding environment in the process of, then the effect of die assembly reinforcement is realized, the aperture of the opening of the clamping groove 5 is the same as the aperture of one end, close to the fixed shaft 6, of the spiral memory metal ring 4, in order to facilitate insertion, a die groove is formed in the fixed die 1, and the model body 3 is inserted into the die groove.

In the invention, when a user uses the device, under the action of the cylinder, the fixed die 1 and the movable die 2 approach to carry out die assembly, the spiral memory metal ring 4 in the original state is in a cylindrical shape with the same upper and lower diameters, when the fixed die 1 and the movable die 2 are in die assembly, the spiral memory metal ring 4 can be smoothly inserted into the clamping groove 5, then molten materials are injected into a model groove in the fixed die 1, the temperature of the molten materials is higher, the fixed die 1 and the movable die 2 are both made of metal materials, the space of the whole clamping groove 5 can be heated to be increased under the action of heat conduction, wherein the fixed shaft 6 is made of copper which is a good heat conductor, the temperature of the environment around the spiral memory metal ring 4 can be correspondingly increased, the spiral memory metal ring 4 can be deformed under the influence of the temperature of the environment, and the spiral memory metal ring 4 can be deformed into a conical shape under the high, in the process of deformation, the diameter of the lower end (figure 2) of the spiral memory metal ring 4 is increased, when the spiral memory metal ring 4 is deformed, the diameter of the lower end of the whole spiral memory metal ring 4 is not changed, the number of spiral layers is reduced, but in the process of continuously increasing the diameter of the lower end of the spiral memory metal ring 4, due to the limitation of the shape of the whole clamping groove 5, only the bottom of the clamping groove 5 can adapt to the size of the deformation, when the spiral memory metal ring 4 is gradually deformed, the diameter of the lower end of the spiral memory metal ring 4 is increased, the whole spiral memory metal ring 4 is expanded by conforming to the deformation, but only the diameter of the opening at the upper end of the clamping groove 5 is matched with the diameter of the spiral memory metal ring 4 in the original state, but the spiral memory metal ring 4 is deformed in a high-temperature environment, and the spiral memory metal ring 4 is used for adapting to the deformation, whole spiral memory metal circle 4 can only slide to the bottom along 5 lateral walls of draw-in groove, just can carry out the grow of bore smoothly, 4 lower extremes of spiral memory metal circle are compelled to the in-process that removes to draw-in groove 5 bottom, wholly have the effect of tractive to fixed axle 6, then corresponding a plurality of spiral memory metal circles 4 carry out the tractive to 2 combined action of movable mould, then play the effect of consolidating to the compound die in-process, mutually support with outside cylinder, further consolidate the power way of compound die, thereby play and avoid the overlap to produce.

The inside material of mould that enters into need can output the model after the cooling shaping of moulding plastics, whole cover half 1 and movable mould 2's temperature after the model shaping is corresponding will also reduce, ambient temperature in draw-in groove 5 will also reduce, then spiral memory metal circle 4 is in low temperature environment, will resume into original state cylindric promptly, 4 bores of cylindric spiral memory metal circle are less, and agree with mutually with the diameter of draw-in groove 5 upper end open-ended, take out from draw-in groove 5 that the in-process spiral memory metal circle 4 at the parting mould can be smooth, at next injection moulding's in-process, can used repeatedly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a reinforced (rfd) injection mold of compound die, includes cover half (1) and movable mould (2), its characterized in that, install model body (3) on movable mould (2), model body (3) are inserted and are established in cover half (1), a plurality of draw-in grooves (5) have been seted up around model body (3), fixed axle (6) that movable mould (2) fixedly connected with and draw-in groove (5) correspond, the one end fixedly connected with spiral memory metal circle (4) of fixed axle (6), draw-in groove (5) open-ended bore is greater than the bore of bottom.

2. A clamping reinforced injection mold according to claim 1, wherein the spiral memory metal ring (4) is cylindrical in a low temperature environment, the spiral memory metal ring (4) is conical in a high temperature environment, and the fixing shaft (6) is made of copper.

3. A clamping and reinforcing injection mold according to claim 1, wherein the caliber of the opening of the clamping groove (5) is the same as the caliber of the end of the spiral memory metal ring (4) close to the fixed shaft (6).

4. A reinforced injection mold for closing a mold according to claim 1, wherein the fixed mold (1) is provided with a mold groove, and the mold body (3) is inserted into the mold groove.