CN214926632U

CN214926632U - Thin-wall container PET injection mold

Info

Publication number: CN214926632U
Application number: CN202121197097.1U
Authority: CN
Inventors: 黄东南
Original assignee: Foshan Shunde Jingyi Industry Co ltd
Current assignee: Foshan Shunde Jingyi Industry Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-30
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a thin wall container PET injection mold, including the bottom plate, it is a plurality of installation pole top is fixed with same connecting plate, and the connecting plate bottom is fixed with the hydraulic stem, and hydraulic stem output shaft has last mould, goes up to run through on the mould and has seted up the exhaust hole, and two first spouts have been seted up to the exhaust hole both sides, and sliding connection has first slider in the first spout, and the welding has the blast pipe between two first sliders, and a plurality of gas vents have been seted up to blast pipe circumference outer wall, and first slider top is fixed with the spring, spring top and first spout fixed connection. The utility model discloses in, when annotating the material, atmospheric pressure in the mould cavity increases, and partial gas is discharged from the gas vent gradually, and simultaneously, atmospheric pressure promotes blast pipe rebound, gets into the exhaust hole back completely when the blast pipe, under the effect of spring, seals the inner chamber to make at the in-process of annotating the material, atmospheric pressure is released, thereby prevents that the mould from filling the condition emergence of not enough.

Description

Thin-wall container PET injection mold

Technical Field

The utility model relates to the technical field of mold, especially, relate to a thin wall container PET injection mold.

Background

The polyethylene terephthalate in the PET is the most important variety in thermoplastic polyester, and is commonly called polyester resin. The PET plastic is a polycondensate of terephthalic acid and ethylene glycol, is commonly called as thermoplastic polyester or saturated polyester together with PBT (polybutylene terephthalate), and is widely used for processing various packaging containers such as plastic bottles and the like due to good performance of the PET plastic.

When PET plastic is processed into a thin-wall container, the plastic injection molding is generally needed for a mold, and in the injection molding process, because the temperature of the molten plastic is very high, the air pressure in the mold cavity is increased rapidly in the process of injecting the molten plastic into the mold cavity, so that the resistance to the subsequent molten plastic is increased, the melt cannot continue to flow, and the condition of insufficient filling of the mold is caused, and therefore, the problem is correspondingly improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a thin-wall container PET injection mold.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a thin-wall container PET injection mold comprises a bottom plate, wherein a plurality of installation rods are fixed at the top of the bottom plate through bolts, the installation rods are arranged at corner positions of the bottom plate, the tops of the installation rods are fixed with the same connecting plate through bolts, the bottom of the connecting plate is fixed with a hydraulic rod through bolts, an output shaft of the hydraulic rod is connected with an upper mold, the upper mold comprises a sealing cover and a butt plate, the butt plate is arranged below the sealing cover, an exhaust hole is formed in the upper mold in a penetrating manner, two first sliding grooves are symmetrically formed in two sides of the exhaust hole, first sliding blocks are connected in the first sliding grooves in a sliding manner, the same exhaust pipe is welded between the two first sliding blocks, the exhaust pipe is provided with an opening at the top and is sealed at the bottom, a plurality of exhaust ports are formed in the circumferential outer wall of the exhaust pipe, a spring is fixed at the top of the first sliding block through bolts, and the top of the spring is fixedly connected with the inner wall of the first sliding grooves through bolts, the upper die is provided with a feeding mechanism, and the mounting rod is provided with a positioning mechanism.

Preferably, the exhaust port is arranged to be inclined downwards, and the cross section of the exhaust port is arranged to be gradually wider from top to bottom.

Preferably, the same injection molding pipe penetrates and is fixed at the same position on the sealing cover and the butt plate of the feeding mechanism.

Preferably, the top of the bottom plate is fixed with a lower die through a bolt, and the upper die and the lower die are positioned on the same vertical line.

Preferably, the fixed blocks are welded at the bottoms of the two sides of the exhaust pipe, the matched clamping grooves are formed in the bottoms of the butt joint plates, the butt joint grooves are formed in the tops of the inner walls of the clamping grooves, second magnets are fixed in the butt joint grooves, first magnets are fixed on the tops of the fixed blocks in an embedded mode, and the opposite magnetic poles of the first magnets and the second magnets are arranged oppositely.

Preferably, the positioning mechanism is provided with a second chute at the inner ends of the front and rear mounting rods, the second chute is connected with a second sliding block in a sliding manner, the two second sliding blocks are fixed with a same first connecting rod through bolts, the inner sides of the first connecting rods are fixed with second connecting rods through bolts, and the inner sides of the two second connecting rods are respectively fixedly connected with the corresponding positions at the two sides of the sealing cover.

The utility model has the advantages that:

1. be provided with the blast pipe among the device, the blast pipe sets up and changes into open-top, the bottom is sealed, and seted up a plurality of gas vents on the blast pipe, when annotating the material, atmospheric pressure in the mould cavity increases, and partial gas is discharged from the gas vent gradually, and simultaneously, atmospheric pressure promotes blast pipe rebound, after the blast pipe gets into the exhaust hole completely, under the effect of spring, seal the inner chamber, thereby make at the in-process of annotating the material, atmospheric pressure is released, thereby prevent that the mould from filling the condition of not enough and taking place.

2. The device is provided with a fixed block, a first magnet is arranged on the fixed block, a second magnet is arranged in the butt plate, after the exhaust pipe completely enters the exhaust hole, the fixed block is embedded with the clamping groove, the position of the fixed block and the position of the exhaust pipe are fixed by the suction force between the first magnet and the second magnet, and therefore the situation that in the plastic cooling forming process in the inner cavity, air pressure is reduced, the exhaust pipe is pushed into the inner cavity by a spring, and a finished product is damaged is avoided.

3. Be provided with second spout and second slider among the device, can be so that sealed lid at the in-process that removes, follow second connecting rod, head rod and second slider radial movement in the second spout to make the removal process of sealed lid more stable, make the accurate butt joint of top mold and bed die, thereby improve product injection moulding's quality.

Drawings

Fig. 1 is a schematic view of a sectioning structure of an upper die of a PET injection mold for a thin-walled container according to the present invention;

fig. 2 is a schematic view of the overall structure of a thin-walled container PET injection mold according to the present invention;

fig. 3 is a schematic structural view of a main view portion of a thin-walled container PET injection mold according to embodiment 2 of the present invention.

In the figure: the device comprises a base plate 1, a mounting rod 2, a connecting plate 3, a lower die 4, a sealing cover 5, a butt joint plate 6, an exhaust hole 7, a first sliding groove 8, a spring 9, a first sliding block 10, an exhaust pipe 11, an exhaust port 12, a fixed block 13, a first magnet 14, a butt joint groove 15, a second magnet 16, a clamping groove 17, an injection molding pipe 18, a second sliding groove 19, a second sliding block 20, a first connecting rod 21, a second connecting rod 22 and a hydraulic rod 23.

Detailed Description

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

Example 1

Referring to fig. 1-2, a thin-walled container PET injection mold comprises a bottom plate 1, wherein a plurality of installation rods 2 are fixed on the top of the bottom plate 1 through bolts, the installation rods 2 are arranged at corner positions of the bottom plate 1, the same connecting plate 3 is fixed on the tops of the installation rods 2 through bolts, a hydraulic rod 23 is fixed on the bottom of the connecting plate 3 through bolts, an output shaft of the hydraulic rod 23 is connected with an upper mold, the upper mold comprises a sealing cover 5 and a butt plate 6, the butt plate 6 is arranged below the sealing cover 5, an exhaust hole 7 is formed in the upper mold in a penetrating mode, two first sliding grooves 8 are symmetrically formed in two sides of the exhaust hole 7, a first sliding block 10 is connected in the first sliding grooves 8 in a sliding mode, the same exhaust pipe 11 is welded between the two first sliding blocks 10, the exhaust pipe 11 is arranged to be an open at the top and sealed at the bottom, a plurality of exhaust holes 12 are formed in the circumferential outer wall of the exhaust pipe 11, and a spring 9 is fixed on the top of the first sliding block 10 through bolts, the top of the spring 9 is fixedly connected with the inner wall of the first sliding groove 8 through a bolt, a feeding mechanism is arranged on the upper die, and a positioning mechanism is arranged on the mounting rod 2.

The utility model discloses in, the gas vent 12 sets to the slope downwards, and the gas vent 12 cross-section sets to from top to bottom gradually wide shape, feed mechanism runs through on sealed lid 5 and buttcover plate 6 same position and is fixed with same injection molding pipe 18, there is bed die 4 at 1 top of bottom plate through the bolt fastening, it is located same vertical line to go up mould and bed die 4, fixed block 13 has all been welded to 11 both sides bottom of blast pipe, the draw-in groove 17 of matcing is seted up to buttcover plate 6 bottom, butt joint groove 15 has been seted up at draw-in groove 17 inner wall top, butt joint groove 15 internal fixation has second magnet 16, the nested first magnet 14 that is fixed block 13 top, first magnet 14 and the relative setting of the 16 opposite magnetic poles of second magnet.

The working principle is as follows: during the use, switch on external power supply with the device, when annotating the material, atmospheric pressure in the mould cavity increases, some gas is discharged from gas vent 12 gradually, simultaneously, atmospheric pressure promotes blast pipe 11 and upwards removes, after blast pipe 11 gets into in the exhaust hole 7 completely, under the effect of spring 9, seal the inner chamber, thereby make at the in-process of annotating the material, atmospheric pressure is released, thereby prevent that the condition that the mould is not filled enough from taking place, after blast pipe 11 gets into in the exhaust hole 7 completely, fixed block 13 and draw-in groove 17 gomphosis, suction between first magnet 14 and the second magnet 16 fixes the position of fixed block 13 and blast pipe 11, thereby prevent the plastics cooling shaping in-process in the inner chamber, atmospheric pressure reduces, blast pipe 11 is pushed in the inner chamber by spring 9, damage the finished product.

Example 2

Referring to fig. 1-3, in the PET injection mold for the thin-wall container, a positioning mechanism is provided with second sliding grooves 19 at the inner ends of front and rear mounting rods 2, second sliding blocks 20 are slidably connected in the second sliding grooves 19, a same first connecting rod 21 is fixed between the two second sliding blocks 20 through bolts, second connecting rods 22 are fixed on the inner sides of the first connecting rods 21 through bolts, and the inner sides of the two second connecting rods 22 are respectively fixedly connected with the corresponding positions at two sides of a sealing cover 5.

The working principle is as follows: sealed lid 5 is at the in-process that removes, follows second connecting rod 22, first connecting rod 21 and second slider 20 radial displacement in second spout 19 to make sealed lid 5's removal process more stable, make the accurate butt joint of last mould and bed die 4, thereby improve product injection moulding's quality.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The thin-wall container PET injection mold comprises a bottom plate (1), wherein a plurality of installation rods (2) are fixed at the top of the bottom plate (1) through bolts, the installation rods (2) are arranged at corner positions of the bottom plate (1), and the thin-wall container PET injection mold is characterized in that a plurality of installation rods (2) are fixed at the top of the installation rods (2) through bolts, a same connecting plate (3) is fixed at the bottom of the connecting plate (3) through bolts, a hydraulic rod (23) is fixed at the bottom of the connecting plate (3), an upper mold is connected to an output shaft of the hydraulic rod (23), the upper mold comprises a sealing cover (5) and a butt plate (6), the butt plate (6) is arranged below the sealing cover (5), an exhaust hole (7) is formed in the upper mold in a penetrating manner, two first sliding grooves (8) are symmetrically formed in two sides of the exhaust hole (7), a first sliding block (10) is slidably connected in the first sliding groove (8), and a same exhaust pipe (11) is welded between the two first sliding blocks (10), the exhaust pipe (11) is arranged to be open-top and sealed at the bottom, a plurality of exhaust ports (12) are formed in the outer wall of the circumference of the exhaust pipe (11), a spring (9) is fixed to the top of the first sliding block (10) through a bolt, the top of the spring (9) and the inner wall of the first sliding groove (8) are fixedly connected through the bolt, a feeding mechanism is arranged on the upper die, and a positioning mechanism is arranged on the installation rod (2).

2. The PET injection mold for a thin-walled container as claimed in claim 1, wherein the vent (12) is formed to be inclined downward, and the cross section of the vent (12) is formed to be gradually wider from top to bottom.

3. The PET injection mold for thin-walled containers as claimed in claim 2, characterized in that the same injection tube (18) is fixed through the feeding mechanism at the same position on the sealing cover (5) and the butt plate (6).

4. The PET injection mould for thin-walled containers as claimed in claim 3, characterized in that the lower mould (4) is fixed on the top of the bottom plate (1) by bolts, and the upper mould and the lower mould (4) are located on the same vertical line.

5. The PET injection mold for the thin-walled container as claimed in claim 4, wherein the exhaust pipe (11) is welded with fixing blocks (13) at the bottoms of both sides, the bottom of the butt plate (6) is provided with a matching clamping groove (17), the top of the inner wall of the clamping groove (17) is provided with a butt groove (15), a second magnet (16) is fixed in the butt groove (15), the top of the fixing block (13) is fixed with a first magnet (14) in a nested manner, and the first magnet (14) and the second magnet (16) are arranged in opposite magnetic poles.

6. The PET injection mold for the thin-wall container as claimed in claim 4 or 5, wherein the positioning mechanism is provided with second sliding grooves (19) at the inner ends of the front and rear mounting rods (2), the second sliding grooves (19) are connected with second sliding blocks (20) in a sliding manner, the two second sliding blocks (20) are fixed with the same first connecting rod (21) through bolts, the inner sides of the first connecting rods (21) are fixed with second connecting rods (22) through bolts, and the inner sides of the two second connecting rods (22) are respectively fixedly connected with the corresponding positions of the two sides of the sealing cover (5).