CN223777673U - Multi-cavity injection mold for plastic bottle blanks - Google Patents

Abstract

The utility model relates to the technical field of plastic molding, and discloses a multi-cavity injection mold for plastic bottle blanks, which solves the problems in the prior art and comprises an upper mold and a lower mold, and is characterized in that lower guide grooves are arranged around the lower mold, positioning grooves are arranged at four corners of the lower mold, positioning holes are arranged in the positioning grooves, a supporting plate is arranged below the lower mold, the supporting plate is connected with a supporting platform, a push rod is arranged below the lower mold, a hydraulic table is connected below the push rod, the push rod and the hydraulic table are both arranged on the supporting platform, an injection molding opening is arranged above the upper mold, upper guide grooves are arranged around the upper mold, positioning blocks are arranged on the upper mold, positioning columns are arranged on the positioning blocks, the positioning blocks can be embedded with the positioning grooves, and the positioning columns can be embedded in the positioning holes. The utility model can carry out multi-cavity injection molding, improves the production efficiency and can rapidly demould.

Description

Multi-cavity injection mold for plastic bottle blanks

Technical Field

The utility model belongs to the technical field of plastic molding, and particularly relates to a multi-cavity injection mold for a plastic bottle blank.

Background

Injection molding is also called injection molding, which is a molding method for injection and molding, and has the advantages of high production speed, high efficiency, automation of operation, various designs, various shapes, large size and accurate product size, the product is easy to update, can form a part with complex shape, but most of the existing forming devices adopt a single-cavity structure, are not beneficial to rapid production, and need to be separated from a die cavity after injection molding, and are difficult to take out due to the fact that the product is easy to be attached to the inner wall of the die cavity, and inconvenient in demolding exists.

For this purpose, we propose a multi-cavity injection mold for plastic bottle preforms.

Disclosure of utility model

Most of the existing forming devices adopt a single-cavity structure, which is not beneficial to quick production, products need to be separated from a die cavity after injection molding, and the products are difficult to take out due to the fact that the products are easy to be attached to the inner wall of the die cavity, and the demolding is inconvenient. In order to solve the problems, the technical scheme is that the multi-cavity injection mold for the plastic bottle blanks comprises an upper mold and a lower mold, and is characterized in that lower guide grooves are formed in the periphery of the lower mold, positioning grooves are formed in four corners of the lower mold, positioning holes are formed in the positioning grooves, a supporting plate is arranged below the lower mold, the supporting plate is connected with a supporting platform, a push rod is arranged below the lower mold, a hydraulic table is connected below the push rod, the push rod and the hydraulic table are both arranged on the supporting platform, an injection opening is formed in the upper mold, upper guide grooves are formed in the periphery of the upper mold, positioning blocks are arranged on the positioning blocks, the positioning blocks can be embedded with the positioning grooves, and the positioning blocks can be embedded in the positioning holes.

Preferably, the hydraulic table is slightly smaller than the support platform, and the hydraulic table can move up and down along the support plate.

Preferably, the positioning hole extends into a supporting plate, and the supporting plate is in threaded connection with the supporting platform.

Preferably, a square groove is formed above the lower die, a through hole is formed below the square groove, the push rod adopts a T-shaped rod, the diameter of the rod body of the push rod is smaller than that of the through hole, the push rod can move up and down in the through hole, the volume of the head of the push rod is smaller than that of the square groove, and the head of the push rod can be clamped in the square groove of the lower die. After injection molding, the push rod pushes upwards to enable the molded plastic to be quickly taken off from the lower die.

Preferably, the upper die and the lower die are made of tungsten-cobalt powder alloy tool steel, and the tungsten-cobalt powder alloy tool steel has good high temperature resistance and corrosion resistance.

Preferably, a protruding flow limiting table is arranged around the injection molding opening to prevent materials from overflowing in the injection molding process.

Preferably, the locating column is in threaded connection with the upper die, so that the locating column is firmer.

Compared with the prior art, the utility model has the beneficial effects that:

When the plastic compression molding machine works, the upper die and the lower die are molded, the positioning column is limited in the positioning hole, the positioning hole is limited in the positioning groove, the lifting hydraulic platform enables the push rod to be just embedded in the lower die model, the upper die is free from an opening, materials are injected from the upper die, the materials are molded between the upper die and the lower die, and after cooling, the upper die and the lower die are separated, and plastic compression molding is performed. The molded plastic is difficult to take down in the lower die, and the hydraulic platform can be lifted to enable the push rod to be ejected upwards, so that the molded plastic is rapidly taken down. The utility model can carry out multi-cavity injection molding, improves the production efficiency and can rapidly demould.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic perspective view of a lower mold of the present utility model;

FIG. 2 is a schematic perspective view of an upper mold according to the present utility model;

FIG. 3 is a side view of the lower die of the present utility model;

FIG. 4 is a top view of the upper die of the present utility model;

FIG. 5 is a schematic cross-sectional view of a mold and pushrod portion according to the utility model;

In the figure, 1, a lower die; 2, a lower diversion trench, 3, a positioning trench, 4, a positioning hole, 5, a supporting plate, 6, a supporting platform, 7, a push rod, 8, a hydraulic table, 9, an upper die, 10, a positioning block, 11, a positioning column, 12, an upper diversion trench, 13, an injection molding opening, 14, a current limiting table, 15 and a model.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

1-2, The utility model comprises a lower die 1 and an upper die 9, and is characterized in that lower diversion trenches 2 are arranged around the lower die 1, positioning grooves 3 are arranged at four corners of the lower die 1, positioning holes 4 are arranged in the positioning grooves 3, a supporting plate 5 is arranged below the lower die 1, the supporting plate 5 is connected with a supporting platform 6, a push rod 7 is arranged below a model 15 of the lower die 1, a hydraulic table 8 is connected below the push rod 7, and the push rod 7 and the hydraulic table 8 are both arranged on the supporting platform 6;

An injection molding opening 13 is formed above the upper die 9, an upper diversion trench 12 is formed around the upper die 9, a positioning block 10 is arranged on the upper die 9, a positioning column 11 is arranged on the positioning block 10, the positioning block 10 can be embedded with the positioning slot 3, and the positioning column 11 can be embedded in the positioning hole 4.

The hydraulic table 8 is slightly smaller than the supporting platform 6, and the hydraulic table 8 can move up and down along the supporting plate 5.

The positioning holes 4 extend into the supporting plate 5, and the supporting plate 5 is in threaded connection with the supporting platform 6.

Square grooves are formed in the upper portion of the model 15 of the lower die 1, through holes are formed in the lower portion of the square grooves, T-shaped rods are adopted by the push rods 7, the diameters of the rod bodies of the push rods 7 are smaller than those of the through holes, the push rods 7 can move up and down in the through holes, the volume of the heads of the push rods 7 is smaller than that of the square grooves, and the heads of the push rods 7 can be clamped in the square grooves of the model 15. After injection molding from the injection molding opening 13, the upper die 9 and the lower die 1 are filled with the material along the lower diversion trench 2 and the upper diversion trench 12, and the head of the push rod 7 can effectively prevent the material from penetrating into the die 15. After the plastic is molded, the upper die 9 and the lower die 1 are separated, the push rod 7 is pushed upwards to enable the molded plastic to be rapidly taken down from the lower die 1, the contact area between the head of the push rod 7 and the molded plastic is increased, and the plastic can be protected from damage in the demolding process.

The upper die 9 and the lower die 1 are made of tungsten-cobalt powder alloy tool steel materials, and the tungsten-cobalt powder alloy tool steel has good high temperature resistance and corrosion resistance.

The periphery of the injection molding opening 13 is provided with a protruding flow limiting table 14 to prevent the material from overflowing in the injection molding process.

The locating column 11 is in threaded connection with the upper die 9, so that the fixing structure is firmer.

The working principle is that when the plastic molding machine works, an upper die 9 and a lower die 1 are molded, a positioning column 11 is limited in a positioning hole 4, a positioning block 10 is limited in a positioning groove 3, a lifting hydraulic platform 8 enables a push rod 7 to be just embedded in a lower die 1 model, the lower die 1 model is free of an opening, materials are injected from an injection molding opening 13 of the upper die 9, the materials are distributed in a plurality of cavities through an upper diversion trench 12 and a lower diversion trench 2, the materials are molded between the upper die 9 and the lower die 1, and after cooling, the upper die 9 and the lower die 1 are separated, and plastic is molded. The molded plastic is difficult to take down on the lower die 1, and the hydraulic platform 8 can be lifted to enable the push rod 7 to be ejected upwards, so that the molded plastic is taken down rapidly.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a plastic bottle base multicavity injection mold, includes bed die (1), goes up mould (9), its characterized in that, be provided with down guiding gutter (2) around bed die (1), bed die (1) four corners is provided with constant head tank (3), be provided with locating hole (4) in constant head tank (3), backup pad (5) are installed to bed die (1) below, backup pad (5) are connected with supporting platform (6), model (15) below of bed die (1) is provided with push rod (7), push rod (7) below is connected with hydraulic table (8), push rod (7) with hydraulic table (8) all set up on supporting platform (6).

The upper die (9) is provided with an injection molding opening (13), an upper diversion trench (12) is arranged around the upper die (9), a positioning block (10) is arranged on the upper die (9), a positioning column (11) is arranged on the positioning block (10), the positioning block (10) can be embedded with the positioning trench (3), and the positioning column (11) can be embedded in the positioning hole (4).

2. The multi-cavity injection mold for plastic bottle blanks according to claim 1, wherein the hydraulic table (8) is slightly smaller than the supporting platform (6), and the hydraulic table (8) can move up and down along the supporting plate (5).

3. The multi-cavity injection mold for plastic bottle blanks according to claim 1 or 2, wherein the positioning holes (4) extend into the supporting plate (5), and the supporting plate (5) is screwed on the supporting platform (6).

4. The multi-cavity injection mold for plastic bottle blanks according to claim 1, wherein a square groove is formed above a mold (15) of the lower mold (1), a through hole is formed below the square groove, a T-shaped rod is adopted for the push rod (7), the diameter of a rod body of the push rod (7) is smaller than that of the through hole, the push rod (7) can move up and down in the through hole, the volume of the head of the push rod (7) is smaller than that of the square groove, and the head of the push rod (7) can be clamped in the square groove of the mold (15).

5. The multi-cavity injection mold for plastic bottle blanks according to claim 1 is characterized in that the upper mold (9) and the lower mold (1) are made of tungsten-cobalt powder alloy tool steel materials, and the high temperature resistance and the corrosion resistance are good.

6. The multi-cavity injection mold for plastic bottle blanks according to claim 1, wherein a protruding flow limiting table (14) is arranged around the injection port (13) to prevent material from overflowing during injection molding.

7. The multi-cavity injection mold for plastic bottle blanks according to claim 1, wherein the positioning column (11) is in threaded connection with the upper mold (9).