CN219076403U - Injection mold capable of preventing backflow - Google Patents

Abstract

The utility model discloses an injection mold for realizing backflow prevention, which comprises an injection mold, wherein a diversion sealing block is fixedly connected to the central position of the upper end of the inner wall of a flow guide pipe, heating blocks are arranged on two sides of the inner wall of the flow guide pipe, one side of each heating block is fixedly connected with a connecting wire, cleaning through holes are formed in two sides of the flow guide pipe, a sealing block is inserted and installed on the inner wall of each cleaning through hole, a drawing rod is fixedly connected to the upper end of each sealing block, a discharge port is fixedly connected to the lower end of a shell, the discharge port is inserted and installed with a spiral groove, and the spiral groove is formed in the upper end of the injection mold. This realize injection mold's that prevents flowing backwards shell body can carry out spiral fixed mounting through helicla flute and discharge gate, conveniently carries out the dismouting and uses to the heating block of inner wall can heat, avoids the material of moulding plastics to condense, and the cleaning tube of shell body side is linked together with the inner wall, can wash the clearance like this, and efficiency is better, and can lock the installation with the head of moulding plastics through the locking piece, and it is more stable to mould plastics.

Description

Injection mold capable of preventing backflow

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold capable of preventing backflow.

Background

The injection mold makes one of the molds a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions. Injection molding is a processing method used in mass production of parts with complex shapes, and specifically refers to injection molding of heated and melted plastic into a mold cavity by an injection molding machine under high pressure, and cooling and solidification are carried out to obtain a molded product.

Through examining, the injection molding die of current disclosure scheme CN103464758B is equipped with the recess that is sunken to the inboard near the outer wall of watering on the die holder to open on the die holder, be provided with the chill layer in the recess, the chill layer accelerates the molten liquid cooling rate in watering, accelerate the solidification rate of molten liquid in watering promptly, the molten liquid has prevented the molten material in the die cavity after solidifying through watering the backward flow to the gating system under the pressure effect, reach the purpose that prevents the refluence, but this scheme still has not enough, the device's structure is integrated in the die, if damage inconvenient the change, and conveniently clear up, support easily and block up, it is inconvenient to use, thereby it solves foretell problem to need an injection molding die that realizes preventing the refluence.

Disclosure of Invention

The utility model aims to provide an injection mold for preventing backflow, which solves the problems that the injection mold for preventing backflow is integrated in the mold, is damaged and inconvenient to replace, is convenient to clean, is easy to support and block, and is inconvenient to use.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an realize injection mold who prevents flowing backwards, includes injection mold, the shell body is installed to the injection mold upper end, and the shell body upper end installs the injection molding head, the installation socket has been seted up to shell body inner wall upper end, and installs socket inner wall side and seted up the expansion tank, expansion tank inner wall fixedly connected with spring, its spring one end fixedly connected with locking piece, and locking piece upper end fixedly connected with shifting block, installation socket lower extreme fixedly connected with honeycomb duct, and honeycomb duct inner wall upper end edge fixedly connected with pivot that resets, and pivot other end fixedly connected with movable sealing plate that resets, honeycomb duct inner wall upper end central point puts fixedly connected with reposition of redundant personnel sealing block, and its honeycomb duct inner wall both sides install the heating piece, and heating piece one side fixedly connected with connecting wire, the washing through-hole has been seted up to the honeycomb duct both sides, and its washing through-hole inner wall plug-in installs the closing piece, and closing piece upper end fixedly connected with pull rod, through-hole one end intercommunication has the washing pipe, and the washing pipe other end is linked together with the shell body, shell body lower extreme fixedly connected with discharge gate, and discharge gate and spiral groove plug-in the installation, the injection mold upper end has been seted up in the spiral duct.

Preferably, the injection mold is in spiral connection with the outer shell in the spiral groove through the discharge hole.

Preferably, the outer shell is in insertion fit with the injection molding head through the mounting socket, and the injection molding head is in insertion fit locking mounting with the mounting socket in the telescopic groove through the locking block on the spring.

Preferably, the honeycomb duct is reset double-opening overturning connection through the reset rotating shaft and the movable sealing plate, the shape of the movable sealing plate is matched with the shape of the opening of the honeycomb duct, the movable sealing plate is in sealing connection with the honeycomb duct through the split sealing block, and the split sealing block is of a prismatic structure.

Preferably, the heating blocks are distributed at symmetrical arc positions on the inner wall of the guide pipe, and the heating blocks are electrically connected with the connecting wires.

Preferably, the sealing block is connected with the guide pipe in a drawing, inserting and combining way through a drawing rod, the shape of the sealing block is larger than that of the through hole, and the guide pipe is communicated with the shell through the cleaning pipeline and the through hole.

Compared with the prior art, the utility model has the beneficial effects that: this realize injection mold's that prevents flowing backwards shell body can carry out spiral fixed mounting through helicla flute and discharge gate, conveniently carries out the dismouting and uses to the heating block of inner wall can heat, avoids the material of moulding plastics to condense, and the cleaning tube of shell body side is linked together with the inner wall, can wash the clearance like this, and efficiency is better, and can lock the installation with the head of moulding plastics through the locking piece, and it is more stable to mould plastics.

Drawings

FIG. 1 is a front view of an injection mold for preventing backflow according to the present utility model;

FIG. 2 is a cross-sectional view of an injection mold for preventing backflow according to the present utility model;

FIG. 3 is a schematic diagram showing connection between a flow guide pipe and a sealing block of an injection mold for preventing backflow;

FIG. 4 is an enlarged view of the injection mold of FIG. 2A for preventing backflow according to the present utility model;

FIG. 5 is an enlarged view of the injection mold of FIG. 2B for preventing backflow according to the present utility model;

fig. 6 is an enlarged view of the injection mold of fig. 2C for preventing backflow according to the present utility model.

In the figure: 1. injection mold, 2, shell body, 3, injection head, 4, honeycomb duct, 5, cleaning pipeline, 6, pull rod, 7, connecting wire, 8, heating block, 9, cleaning through-hole, 10, closing block, 11, poking block, 12, installation socket, 13, locking block, 14, expansion groove, 15, spring, 16, reset rotating shaft, 17, movable sealing plate, 18, shunt sealing block, 19, spiral groove, 20, discharge gate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the present utility model provides a technical solution: an injection mold for realizing backflow prevention comprises an injection mold 1, an outer shell 2, an injection molding head 3, a flow guide pipe 4, a cleaning pipeline 5, a pull rod 6, a connecting lead 7, a heating block 8, a cleaning through hole 9, a sealing block 10, a shifting block 11, an installation jack 12, a locking block 13, a telescopic groove 14, a spring 15, a reset rotating shaft 16, a movable sealing plate 17, a flow dividing sealing block 18, a spiral groove 19 and a discharge hole 20, wherein the upper end of the injection mold 1 is provided with the outer shell 2, the injection molding head 3 is arranged at the upper end of the outer shell 2 and is in spiral connection with the outer shell 2 through the discharge hole 20, so that the outer shell 2 can be spirally installed, the outer shell 2 is conveniently assembled, disassembled and replaced and used, the outer shell 2 is assembled with the injection molding head 3 through the installation jack 12 in an inserting and locking way through the locking block 13 on the spring 15 in the telescopic groove 14, so that the injection molding head 3 and the outer shell 2 are locked by the locking block 13 in a buckling way, stable injection molding is convenient, the upper end of the inner wall of the outer shell 2 is provided with the installation jack 12, the side surface of the inner wall of the installation jack 12 is provided with the telescopic groove 14, the inner wall of the telescopic groove 14 is fixedly connected with the spring 15, one end of the spring 15 is fixedly connected with the locking block 13, the upper end of the locking block 13 is fixedly connected with the shifting block 11, the lower end of the installation jack 12 is fixedly connected with the flow guide pipe 4, the edge of the upper end of the inner wall of the flow guide pipe 4 is fixedly connected with the reset rotating shaft 16, the other end of the reset rotating shaft 16 is fixedly connected with the movable sealing plate 17, the flow guide pipe 4 is in reset double-opening overturning connection with the movable sealing plate 17 through the reset rotating shaft 16, the shape of the movable sealing plate 17 is matched with the opening shape of the flow guide pipe 4, the movable sealing plate 17 is in sealing connection with the flow guide pipe 4 through the shunt sealing block 18, and the shunt sealing block 18 is prismatic structure, so make honeycomb duct 4 can reset the upset through movable sealing plate 17 and pivot 16 that resets, play the effect of check valve, avoid backward flow, the shunt sealing block 18 of its honeycomb duct 4 inner wall upper end central point put fixedly connected with, heating block 8 is installed to its honeycomb duct 4 inner wall both sides, and heating block 8 one side fixedly connected with connecting wire 7, heating block 8 is symmetrical arc position distribution in honeycomb duct 4 inner wall, and heating block 8 and connecting wire 7 electric connection, so make heating block 8 can heat honeycomb duct 4, can avoid the injection molding material to condense and block up, cleaning through hole 9 has been seted up to honeycomb duct 4 both sides, its cleaning through hole 9 inner wall cartridge installs closing piece 10, and closing piece 10 upper end fixedly connected with pull rod 6, closing piece 10 is pull plug cartridge through pull rod 6 and honeycomb duct 4 and is connected, and closing piece 10's shape is greater than through cleaning pipe 5 and through-hole 9 and shell body 2 are linked together, so that closing piece 10 conveniently carries out the switching regulation to cleaning through-hole 9, and cleaning pipe 5 can carry out cleaning through-hole 9 to honeycomb duct 4, cleaning through-hole 9 and cleaning pipe 5 and through-hole 9 and shell body 2 are linked together, the other end that is connected with spiral shell body 2, the end 20 is closed and is connected with the ejection of compact groove 1, the end is closed and is opened to the spiral shell body is opened and 20.

Working principle: when the injection mold for realizing backflow prevention is used, firstly, the outer shell 2 is installed in spiral communication with the injection mold 1 through the spiral groove 19 and the discharge hole 20, then the injection molding head 3 is inserted into the installation jack 12, so that the injection molding head 3 is buckled and locked through the locking block 13 and the spring 15, then injection molding is performed, when injection molding material flows in, the movable sealing plate 17 can be pushed away for injection molding, when injection molding is stopped, the movable sealing plate 17 can be automatically closed through the reset rotating shaft 16, backflow of injection molding material is avoided, the heating block 8 can be started during injection molding, the inner wall of the guide pipe 4 is heated, material condensation is avoided, when cleaning is needed, the sealing block 10 can be pulled up through the pull rod 6, water is injected through the cleaning pipeline 5 and is led out through the installation jack 12, the discharge hole 20 and the cleaning pipeline 5 on the other side, cross is formed, flushing is performed, and when the device is damaged, the device can be quickly spirally removed for replacement, and the backflow prevention mold is realized.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides an realize injection mold who prevents flowing backwards, includes injection mold (1), shell body (2) are installed to injection mold (1) upper end, and injection molding head (3), its characterized in that are installed to shell body (2) upper end: the utility model discloses a discharging device, including shell body (2) and shell body, install socket (12) have been seted up to shell body (2) inner wall upper end, and install socket (12) inner wall side and seted up flexible groove (14), flexible groove (14) inner wall fixedly connected with spring (15), its spring (15) one end fixedly connected with locking piece (13), and locking piece (13) upper end fixedly connected with shifting block (11), install socket (12) lower extreme fixedly connected with honeycomb duct (4), and honeycomb duct (4) inner wall upper end edge fixedly connected with pivot (16) that resets, and pivot (16) other end fixedly connected with movable sealing plate (17) reset, honeycomb duct (4) inner wall upper end central point puts fixedly connected with reposition of redundant personnel sealing block (18), heating piece (8) are installed to its honeycomb duct (4) inner wall both sides, and heating piece (8) one side fixedly connected with connecting wire (7), cleaning through-hole (9) have been seted up to honeycomb duct (4) both sides, its cleaning through-hole (9) inner wall cartridge is installed and is sealed piece (10), and sealing piece (10) upper end fixedly connected with pull rod (6), through-hole (9) one end intercommunication has pipeline (5) and other end fixedly connected with the shell body (2) that is connected with the discharging device (20), and the discharge hole (20) is inserted and installed with the spiral groove (19), and the spiral groove (19) is arranged at the upper end of the injection mold (1).

2. An injection mold for realizing backflow prevention according to claim 1, wherein: the injection mold (1) is in spiral connection with the outer shell (2) in the spiral groove (19) through the discharge hole (20).

3. An injection mold for realizing backflow prevention according to claim 2, wherein: the outer shell (2) is in insertion and locking installation with the injection molding head (3) through the installation socket (12), and the injection molding head (3) is in insertion and locking installation with the installation socket (12) in the telescopic groove (14) on the spring (15) through the locking block (13).

4. An injection mold for realizing backflow prevention according to claim 3, wherein: the honeycomb duct (4) is reset double-opening overturning connection with the movable sealing plate (17) through the reset rotating shaft (16), the shape of the movable sealing plate (17) is matched with the shape of the opening of the honeycomb duct (4), the movable sealing plate (17) is in sealing connection with the honeycomb duct (4) through the shunt sealing block (18), and the shunt sealing block (18) is of a prismatic structure.

5. The injection mold for realizing backflow prevention according to claim 4, wherein: the heating blocks (8) are distributed at symmetrical arc positions on the inner wall of the guide pipe (4), and the heating blocks (8) are electrically connected with the connecting wires (7).

6. The injection mold for realizing backflow prevention according to claim 5, wherein: the sealing block (10) is connected with the guide pipe (4) in a drawing and inserting mode through the drawing rod (6), the shape of the sealing block (10) is larger than that of the through hole (9), and the guide pipe (4) is communicated with the outer shell (2) through the cleaning pipeline (5) and the through hole (9).

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