CN110171113B

CN110171113B - Injection device for injection mold

Info

Publication number: CN110171113B
Application number: CN201910553819.3A
Authority: CN
Inventors: 易伟青
Original assignee: Dongguan Jinzhou Plastic Products Co ltd
Current assignee: DONGGUAN JINZHOU PLASTIC PRODUCTS Co.,Ltd.
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2021-02-19
Anticipated expiration: 2039-06-25
Also published as: CN110171113A

Abstract

The invention relates to the technical field of injection molds, in particular to an injection device for an injection mold, which comprises a shell; the inboard of shell is provided with the piston plate who removes by the drive assembly drive, the lower extreme of shell is provided with the discharging pipe, and the fixed axle is installed through more than one dead lever to the inboard of discharging pipe, install helical blade on the lateral wall of fixed axle, the upper end of fixed axle is fixed with the stopper piece, and when the piston plate moves down, the raw materials of moulding plastics carries out the spiral flow under helical blade and stopper piece's limiting displacement. The invention has novel design, when the piston plate moves downwards, the injection molding raw material flows spirally under the limiting action of the spiral blade and the barrier block, so that the injection molding raw material positioned at the inner side of the shell flows close to the inner wall of the shell preferentially when entering the discharge pipe, the injection molding raw material can be ensured to be reheated by the heating component before flowing out, and the flowability of the injection molding raw material entering the mold is improved.

Description

Injection device for injection mold

Technical Field

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

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

Need adopt injection apparatus to carry out high-pressure injection when carrying out the raw materials of moulding plastics and annotating, current injection apparatus is in the injection mold that directly impresses the raw materials of moulding plastics, in order to prevent that the raw materials of moulding plastics cooling from influencing the effect of moulding plastics, generally all can set up heating device on injection apparatus's inner wall, heating device carries out heat preservation to the raw materials of moulding plastics and handles, nevertheless because heating device sets up on the inner wall, the raw materials of moulding plastics in the injection apparatus is in intermediate position department and can't carry out fine heat preservation, lead to the effect of moulding plastics to worsen.

Disclosure of Invention

The present invention is directed to an injection device for an injection mold, which solves the above problems of the related art.

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

an injection device for an injection mold includes a housing; the inboard of shell is provided with the piston plate who removes by the drive assembly drive, the lower extreme of shell is provided with the discharging pipe, and the fixed axle is installed through more than one dead lever to the inboard of discharging pipe, install helical blade on the lateral wall of fixed axle, the upper end of fixed axle is fixed with the stopper piece, and when the piston plate moves down, the raw materials of moulding plastics carries out the spiral flow under helical blade and stopper piece's limiting displacement.

As a further scheme of the invention: the heating component comprises a heating pipe and a control box for supplying power and controlling the heating pipe, and the heating pipe is embedded in the inner wall of the shell.

As a still further scheme of the invention: the blocking block is arranged in a round table-shaped structure and used for guiding the injection molding raw material in the middle position.

As a still further scheme of the invention: the fixed plate is fixed at the upper end of the inner side of the shell, the filling opening communicated with the feeding pipe is formed in the fixed plate, the lower end of the feeding pipe penetrates through the piston plate, and the lower end face of the feeding pipe and the lower end face of the piston plate are located on the same horizontal plane.

As a still further scheme of the invention: the utility model discloses a piston plate, including inlet pipe, piston plate, spring, stopper, baffle, piston plate, the inboard baffle that articulates in position department that inlet pipe and piston plate are connected, the lower extreme of baffle passes through the inner wall connection of spring and inlet pipe, still be provided with the stopper on the inner wall of inlet pipe, when the baffle is in the horizontality, the lower extreme butt of baffle and stopper.

As a still further scheme of the invention: the driving assembly comprises at least one electric telescopic rod, and two ends of the electric telescopic rod are fixedly connected with the fixed plate and the piston plate respectively.

As a still further scheme of the invention: at least two hangers are fixed on the side wall of the shell.

As a still further scheme of the invention: the driving assembly comprises an oil pump and an oil tank, wherein the oil pump is communicated with the oil tank through a guide pipe and is also communicated with a closed cavity formed by the fixed plate and the piston plate through another guide pipe.

Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, when the piston plate moves downwards, the injection molding raw material flows spirally under the limiting action of the spiral blade and the barrier block, so that the injection molding raw material positioned at the inner side of the shell flows close to the inner wall of the shell preferentially when entering the discharge pipe, the injection molding raw material can be ensured to be reheated by the heating component before flowing out, and the flowability of the injection molding raw material entering the mold is improved.

Drawings

Fig. 1 is a perspective view of an injection device for an injection mold.

FIG. 2 is a schematic structural diagram of a first embodiment of an injection device for an injection mold.

FIG. 3 is a schematic structural view of a second embodiment of an injection device for an injection mold.

FIG. 4 is a schematic structural view of a third embodiment of an injection device for an injection mold.

Fig. 5 is a sectional view of a feed pipe in the injection device for the injection mold.

In the figure: 1-shell, 2-filling port, 3-control box, 4-discharging pipe, 5-fixing plate, 6-piston plate, 7-heating pipe, 8-feeding pipe, 9-electric telescopic rod, 10-blocking block, 11-helical blade, 12-fixing shaft, 13-fixing rod, 14-hanging lug, 15-oil pump, 16-oil tank, 17-baffle, 18-spring and 19-limiting block.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1, 2 and 5, in an embodiment of the present invention, an injection device for an injection mold includes a housing 1; the inboard of shell 1 is provided with piston plate 6 by the drive assembly drive removal, and when piston plate 6 removed, the ejection of compact extrusion of the raw materials of realizing moulding plastics, the lower extreme of shell 1 is provided with discharging pipe 4, and fixed axle 12 is installed through more than one dead lever 13 to the inboard of discharging pipe 4, install helical blade 11 on the lateral wall of fixed axle 12, and the upper end of fixed axle 12 is fixed with and blocks piece 10, and when piston plate 6 removed downwards, the raw materials of moulding plastics carries out the spiral flow under helical blade 11 and the limiting displacement who blocks piece 10, thereby realizes, and when the raw materials of moulding plastics that is located shell 1 inboard gets into discharging pipe 4, the raw materials of moulding plastics of preferred pressing close to shell 1 inner wall flow to ensure that the raw materials of moulding plastics all can carry out reheating treatment through heating assembly before flowing out, improve the mobility of the raw.

Specifically, the heating assembly comprises a heating pipe 7 and a control box 3 for supplying power and controlling the heating pipe 7, and the heating pipe 7 is embedded in the inner wall of the shell 1, so that the injection molding raw material is heated.

Preferably, the blocking block 10 is arranged in a circular truncated cone-shaped structure and is used for guiding the injection molding raw material at the middle position, so that the injection molding raw material at the middle position is guided to the inner wall of the housing 1.

Further, a fixing plate 5 is fixed at the upper end of the inner side of the housing 1, a filling opening 2 communicated with a feeding pipe 8 is formed in the fixing plate 5, the lower end of the feeding pipe 8 penetrates through the piston plate 6, and the lower end of the feeding pipe 8 and the lower end surface of the piston plate 6 are located on the same horizontal plane.

Realize the extrusion when realizing piston plate 6 downstream, and do not influence the feeding of inlet pipe 8, the position department inboard that inlet pipe 8 is connected with piston plate 6 articulates there is baffle 17, and the lower extreme of baffle 17 passes through the inner wall connection of spring 18 with inlet pipe 8, still be provided with stopper 19 on the inner wall of inlet pipe 8, when baffle 17 is in the horizontality, baffle 17 and stopper 19's lower extreme butt, thereby in the use, when carrying out the raw materials and adding, baffle 17 rotates downwards under the raw materials action of gravity of moulding plastics, realizes the raw materials and adds, when losing the weight effect, baffle 17 reverts the horizontality under the effect of spring 18, when piston plate 6 moves downwards, because the effect of pressure in the shell 1, baffle 17 does not take place the rotation under stopper 19's effect, plays sealed effect to inlet pipe 8 simultaneously.

The driving assembly comprises at least one electric telescopic rod 9, two ends of the electric telescopic rod 9 are respectively and fixedly connected with the fixing plate 5 and the piston plate 6, and in the specific implementation process of the invention, two electric telescopic rods 9 are adopted, so that the balancing effect is achieved.

Example two

Referring to fig. 3, in order to facilitate the lifting movement of the outer shell 1, another embodiment is further provided to complete the present application, specifically, at least two hanging lugs 14 are fixed on the side wall of the outer shell 1, and preferably, the hanging lugs 14 are welded to the outer shell 1, so as to ensure the stability of the connection between the hanging lugs 14 and the outer shell 1.

EXAMPLE III

Referring to fig. 4, another embodiment is provided in the specific implementation process of the present invention, specifically, the driving assembly includes an oil pump 15 and an oil tank 16, the oil pump 15 is communicated with the oil tank 16 through a conduit, and is also communicated with a closed cavity formed by the fixed plate 5 and the piston plate 6 through another conduit, and the piston plate 6 is moved up and down by pumping hydraulic pressure in the oil tank 16 through the oil pump 15, so that discharging of injection molding raw materials is realized, and the control is convenient.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An injection device for an injection mould, comprising a housing (1); the injection molding device is characterized in that a piston plate (6) driven by a driving assembly to move is arranged on the inner side of the shell (1), a discharge pipe (4) is arranged at the lower end of the shell (1), a fixed shaft (12) is arranged on the inner side of the discharge pipe (4) through more than one fixed rods (13), spiral blades (11) are arranged on the side wall of the fixed shaft (12), a blocking block (10) is fixed at the upper end of the fixed shaft (12), and when the piston plate (6) moves downwards, injection molding raw materials flow spirally under the limiting action of the spiral blades (11) and the blocking block (10);

heating element includes heating pipe (7) and for heating pipe (7) carry out power supply and control box (3), heating pipe (7) embedding on the inner wall of shell (1), stop block (10) and be used for the raw materials of moulding plastics to the inner wall department water conservancy diversion of shell (1) to being in intermediate position department.

2. An injection unit for an injection mould according to claim 1, characterised in that the blocking block (10) is arranged in a truncated-cone-shaped configuration.

3. An injection device for an injection mold according to claim 1, characterized in that a fixing plate (5) is fixed on the inner upper end of the housing (1), a filling opening (2) communicated with the feeding pipe (8) is arranged on the fixing plate (5), the lower end of the feeding pipe (8) penetrates through the piston plate (6), and the lower end of the feeding pipe (8) and the lower end surface of the piston plate (6) are on the same horizontal plane.

4. An injection device for injection mold according to claim 3, characterized in that the inner side of the position where the feeding pipe (8) is connected with the piston plate (6) is hinged with a baffle (17), the lower end of the baffle (17) is connected with the inner wall of the feeding pipe (8) through a spring (18), the inner wall of the feeding pipe (8) is further provided with a limit block (19), and when the baffle (17) is in the horizontal state, the baffle (17) is abutted against the lower end of the limit block (19).

5. An injection unit for an injection mould according to claim 1, characterised in that said drive assembly comprises at least one electric telescopic rod (9), the two ends of said electric telescopic rod (9) being fixedly connected to said fixed plate (5) and said piston plate (6), respectively.

6. An injection unit for an injection mould according to claim 1, characterised in that at least two lugs (14) are fixed to the side walls of the housing (1).

7. An injection unit for an injection mould according to claim 1, characterised in that the drive assembly comprises an oil pump (15) and an oil tank (16), the oil pump (15) being in communication with the oil tank (16) via a conduit and being in communication with the closed cavity formed by the fixed plate (5) and the piston plate (6) via a further conduit.