CN218948337U

CN218948337U - High-efficiency polyethylene injection molding machine

Info

Publication number: CN218948337U
Application number: CN202222393445.3U
Authority: CN
Inventors: 李向荣; 安国军; 刘翠新
Original assignee: Shanghai Dianbei Industrial Co ltd
Current assignee: Shanghai Dianbei Industrial Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-05-02
Anticipated expiration: 2032-09-08

Abstract

The utility model discloses a high-efficiency polyethylene injection molding machine, relates to the technical field of injection molding machine equipment, and aims to solve the problem that bubbles are generated in plastics in a molten state. The key points of the technical scheme are as follows: including the frame, set up in the frame injection molding rifle, exhaust bubble device and extrusion head, the one end fixed mounting of mould is on injection molding rifle, exhaust bubble device fixed mounting is in the mould top, exhaust bubble device is including mounting box, hob and sliding plate, mounting box fixed mounting is on the mould, the mounting box is equipped with first cavity, first cavity inner wall is equipped with the first exhaust hole of being connected with the mould, the hob rotates along the horizontal direction and sets up in the mould, sliding plate slidable mounting is on the mounting box, the sliding plate is used for shutoff first exhaust hole, the input of extrusion head and the output fixed connection of mould. According to the utility model, the screw rod is arranged, so that bubbles in the plastic in a molten state in the die are effectively removed, and the qualification rate of products is improved.

Description

High-efficiency polyethylene injection molding machine

Technical Field

The utility model relates to the technical field of injection molding machine equipment, in particular to a high-efficiency polyethylene injection molding machine.

Background

Injection molding machines are also known as injection molding machines or injection molding machines. It is a main forming equipment for making thermoplastic plastics or thermosetting plastics into various shaped plastic products by using plastic forming mould.

The injection molding machine can heat the plastic, apply high pressure to the molten plastic, so that the molten plastic is injected to fill the mold cavity, however, impurities in the plastic are not easy to remove in the cleaning process, so that the plastic enters the mold after being molten to generate certain bubbles, and the existence of the bubbles can lead to unqualified products finally produced.

Therefore, a new solution is needed to solve the problem of air bubbles in the mold cavity.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the high-efficiency polyethylene injection molding machine, and the screw rod is arranged to effectively remove air bubbles in plastics in a molten state in a mold, so that the qualification rate of products is improved.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a high-efficient polyethylene injection molding machine, includes the frame, sets up injection molding rifle, mould, exhaust bubble device and the extrusion head in the frame, the one end fixed mounting of mould is on injection molding rifle, exhaust bubble device fixed mounting is in the mould top, exhaust bubble device is including mounting box, hob and sliding plate, mounting box fixed mounting is on the mould, the mounting box is equipped with first cavity, first cavity inner wall is equipped with the first exhaust hole of being connected with the mould, the hob rotates along the horizontal direction and sets up in the mould, sliding plate slidable mounting is on the mounting box, the sliding plate is used for shutoff first exhaust hole, the input of extrusion head and the output fixed connection of mould.

The utility model is further provided with: the mounting box is further provided with a second cavity, the inner wall of the second cavity is provided with a second exhaust hole connected with the first cavity, and the second cavity is further provided with a sliding block for blocking the second exhaust hole.

The utility model is further provided with: the sliding plate is characterized in that vertical sliding rods are arranged on two sides of the sliding plate, limiting blocks are arranged on the sliding rods, and through holes for installing the sliding rods are formed in two sides of the first exhaust holes.

The utility model is further provided with: the air bubble exhausting device comprises a sliding block, and is characterized in that the air bubble exhausting device further comprises a spring, a pull rod for installing the spring is arranged on one side of the sliding block, two ends of the spring are respectively arranged on the sliding block and the inner wall of a second cavity, corresponding electromagnets are arranged on the second cavity and the sliding block, second exhaust holes connected with the first cavity are formed in the inner wall of the second cavity, a button corresponding to the sliding plate is arranged on one side of the first exhaust hole, and the electromagnets are electrically connected with the button.

The utility model is further provided with: the second cavity side wall is provided with a discharge hole, and a hinged door leaf is arranged in the discharge hole.

The utility model is further provided with: the mould is provided with first moulding-die and second moulding-die, the one end of first moulding-die is fixed connection with the output of rifle of moulding plastics, the one end of second moulding-die rotates and sets up on the other end of first moulding-die, exhaust bubble device fixed mounting is in the top of first moulding-die, first moulding-die has a plurality of discharge openings along central axis annular array, the second moulding-die has two sets of extrusion holes along central axis annular array, two sets of extrusion holes communicate with the discharge opening respectively, two sets of extrusion hole radiuses are different and all are less than the radius of discharge opening.

The utility model is further provided with: the outer side of the second pressing die is provided with an adjusting handle for rotating the second pressing film, and the outer circumferential surface of the first pressing die is provided with scale grooves corresponding to the two groups of pressing holes.

In summary, the utility model has the following beneficial effects: when plastics melt through the rifle of moulding plastics and get into in the mould, the screw rod on the bubble removal device extrudees plastics under the molten state in the mould, gets rid of the bubble in the plastics to directly over the first moulding-die inner chamber, then the plastics after getting rid of the bubble extrude in the mould, and staff cuts off time and gets rid of the inside gas of mould through installing the exhaust assembly on bubble removal device to reach effectually getting rid of the bubble under the molten state, improved the product percent of pass.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the mold and bubble removal device of the present utility model;

FIG. 3 is a schematic view of the first die and bubble removal apparatus of the present utility model;

FIG. 4 is an exploded view of the bubble removal device of the present utility model;

FIG. 5 is a second exploded view of the bubble removal device of the present utility model;

FIG. 6 is a perspective exploded view of the bubble removal device of the present utility model;

fig. 7 is a schematic structural view of a second stamper of the present utility model.

In the figure: 1-an injection molding gun;

2-a die; 2 a-a first stamper; 2a 1-a discharge hole; 2 b-a second stamper; 2b 1-extrusion holes; 2b 2-an adjustment handle;

3-an air bubble removal device; 3 a-mounting box; 3a 1-a first cavity; 3a 11-a first vent; 3a 12-button; 3a 13-door leaf; 3a 2-a second cavity; 3a 21-a second vent; 3a 22-electromagnet; 3 b-screw rod; 3 c-a sliding plate; 3c 1-a sliding rod; 3c 2-limiting blocks; 3 d-a slider; 3 e-springs;

4-extrusion head.

Detailed Description

The present utility model will be described in detail below with reference to the accompanying drawings and examples.

The utility model provides a high-efficient polyethylene injection molding machine, as shown in fig. 1 through 7, includes frame, the rifle 1 of moulding plastics, mould 2, exhaust bubble device 3 and the extrusion head 4 of setting in the frame, and the input fixed mounting of mould 2 is on the rifle 1 of moulding plastics, and exhaust bubble device 3 fixed mounting is in mould 2 top, and the input fixed connection of extrusion head 4 and the output of mould 2.

As shown in fig. 3, fig. 4 and fig. 7, the mold 2 is provided with a first pressing mold 2a and a second pressing mold 2b, one end of the first pressing mold 2a is fixedly connected with the output end of the injection molding gun 1 through a flange, one end of the second pressing mold 2b is rotatably connected with the other end of the first pressing mold 2a through shaft hole matching, the bubble exhausting device 3 is welded above the first pressing mold 2a, the first pressing mold 2a is provided with a plurality of discharging holes 2a1 in an annular array along the axial direction, the second pressing mold 2b is provided with two groups of extruding holes 2b1 in an annular array along the axial direction, the two groups of extruding holes 2b1 are respectively communicated with the plurality of discharging holes 2a1, an adjusting handle 2b2 for rotating the second pressing mold 2b is welded on the outer side of the second pressing mold 2b, scale grooves corresponding to the two groups of extruding holes are formed in the outer circumferential surface of the first pressing mold 2a, and the extruding holes 2b1 with different apertures are corresponding to the discharging holes 2a1 through the adjusting handle 2b2 and the scale grooves, so that the pressure of the inner cavity of the first pressing mold 2a is adjusted.

As shown in fig. 4 and 5, the bubble removing apparatus 3 includes a mounting case 3a, a screw rod 3b and a motor, the motor is fixedly mounted on the mounting case 3a, an executing portion of the motor is welded at a bottom end of the screw rod 3b, the mounting case 3a is fixedly mounted above the mold 2 by a bolt, the screw rod 3b is rotatably disposed in the mold 2 in a horizontal direction, after plastic in a melted state enters the mold 2, the screw rod 3b is driven by the motor to squeeze the plastic in the mold 2, and the bubble in the plastic is squeezed to an uppermost portion of an inner cavity of the first pressing mold 2a by a gravity of the plastic itself.

As shown in fig. 3, the air bubble exhausting device 3 further includes a sliding plate 3c, vertical sliding rods 3c1 are welded on two sides of the sliding plate 3c, a limiting block 3c2 is connected to the top end of the sliding rod 3c1 in a threaded manner, a first cavity 3a1 is formed in the installation box 3a, a first air exhaust hole 3a11 connected with the die 2 is formed in the inner wall of the first cavity 3a1, through holes are formed on two sides of the first air exhaust hole 3a11, the sliding rod 3c1 is inserted in the through holes, the sliding plate 3c is used for sealing the first air exhaust hole 3a11, the sliding rod 3c1 on the sliding plate 3c is limited by the limiting block 3c2 in the sliding plate 3c sliding process, and the sliding plate 3c does not drop into the first die 2 a.

As shown in fig. 5 and 6, the air bubble removing device 3 further includes a slider 3d, the mounting box 3a is further provided with a second cavity 3a2, the inner wall of the second cavity 3a2 is provided with a second air vent 3a21 connected with the first cavity 3a1, the slider 3d is slidably arranged in the second cavity 3a2, the slider 3d is used for blocking the second air vent 3a21, the slider 3d is in a concave shape, one side of the slider 3d is in threaded connection with a pull rod, the slider 3d is moved to one side of the second air vent 3a21 through controlling the pull rod, the first air vent 3a11 and the second air vent 3a21 are matched to discharge air in the die 2, and the slider 3d can be blocked by reversely controlling the pull rod.

As shown in fig. 5 and 6, the air bubble removing device 3 further includes a spring 3e for pushing the slider 3d to close the second air vent hole 3a21, the spring 3e is sleeved on the pull rod, two ends of the spring 3e are welded on the inner walls of the slider 3d and the second cavity 3a2 respectively, a button 3a12 is mounted on one side of the first air vent hole 3a11 through bolts, the button 3a12 corresponds to the sliding plate 3c, corresponding electromagnets 3a22 are mounted on the inner walls of the second cavity 3a2 and the slider 3d through bolts, the button 3a12 is electrically connected with the electromagnets 3a22, the slider 3d is far away from the second air vent hole 3a21 through the pull rod, the electromagnets 3a22 fix the slider 3d on the inner wall of the second cavity 3a2, then air in the mold 2 is removed through the first air vent hole 3a11 and the second air vent hole 3a21, when air in the mold 2 is removed, the sliding plate 3c is pushed upwards by plastic, the sliding block presses the button 3a12, the electromagnets 3a22 are powered off, and the slider 3d is pushed to push the electromagnets 3a 22.

As shown in fig. 5 and 6, a material removing opening is formed in the side wall of the first cavity 3a1, a door leaf 3a13 is hinged to the material discharging opening, and a certain amount of plastic sprayed into the first cavity 3a1 is cleaned by opening the door leaf 3a 13.

Working principle: when the product is required to be produced, a worker opens the sliding block 3d, rotates the second pressing die 2b to enable the extrusion hole with the large aperture to correspond to the discharge hole 2a1, starts the injection gun 1 to enable the plastic in the molten state to rapidly fill the first pressing die 2a, simultaneously pushes the sliding plate 3c to press the button 3a12, enables the electromagnet 3a22 to be powered off, pushes the sliding block 3e to seal the second air outlet 3a21, thereby rapidly removing the original gas in the first pressing die 2a, simultaneously preventing the plastic from leaking, drives the screw rod 3b to extrude the plastic in the first pressing die 2a, and the gravity of the plastic in the molten state, the air bubble in the plastic is extruded to the uppermost part of the inner cavity of the first pressing die 2a, the plastic in the molten state is far away from the sliding plate 3c, the sliding plate 3c slides down by the gravity of the plastic, after a certain time, a worker fixes the sliding block 3d on the electromagnet 3a22 by pulling the pull rod, releases air in the die 2 through the first air exhaust hole 3a11 and the second air exhaust hole 3a21, pushes the sliding plate 3c to block the first air exhaust hole 3a11 while the inner cavity of the first die 2a is filled with plastic in a molten state again after the air in the die 2 is exhausted, the sliding plate 3c presses the button 3a12 to enable the electromagnet 3a22 to be powered off, the spring 3e pushes the sliding block 3d to block the second air exhaust hole 3a21, then the worker opens the door leaf 3a13 to clean the plastic sprayed out of the first cavity 3a1, and then closes the door leaf 3a13, so that bubbles in the plastic in the molten state in the die 2 are removed, and the qualification rate of product production is improved.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The utility model provides a high-efficient polyethylene injection molding machine, includes the frame, sets up injection molding rifle (1) in the frame, its characterized in that: still including mould (2), exhaust bubble device (3) and extrusion head (4), the one end fixed mounting of mould (2) is on injection gun (1), exhaust bubble device (3) fixed mounting is in mould (2) top, exhaust bubble device (3) are including mounting box (3 a), hob (3 b) and sliding plate (3 c), mounting box (3 a) fixed mounting is on mould (2), first cavity (3 a 1) have been seted up to mounting box (3 a), first cavity (3 a 1) inner wall is equipped with first exhaust hole (3 a 11) be connected with mould (2), hob (3 b) rotate along the horizontal direction and set up in mould (2), sliding plate (3 c) slidable mounting is on mounting box (3 a), sliding plate (3 c) are used for shutoff first exhaust hole (3 a 11), the input of extrusion head (4) is fixed connection with the output of mould (2).

2. The high efficiency polyethylene injection molding machine of claim 1, wherein: the mounting box (3 a) is further provided with a second cavity (3 a 2), the inner wall of the second cavity (3 a 2) is provided with a second exhaust hole (3 a 21) connected with the first cavity (3 a 1), and a sliding block (3 d) for blocking the second exhaust hole (3 a 21) is further arranged in the second cavity (3 a 2).

3. The high efficiency polyethylene injection molding machine of claim 1, wherein: the sliding plate (3 c) both sides are equipped with vertical slide bar (3 c 1), be equipped with stopper (3 c 2) on slide bar (3 c 1), first exhaust hole (3 a 11) both sides are equipped with the through-hole that is used for installing slide bar (3 c 1).

4. The high efficiency polyethylene injection molding machine of claim 2, wherein: the air bubble exhausting device is characterized in that the air bubble exhausting device (3) further comprises a spring (3 e), a pull rod for installing the spring (3 e) is arranged on one side of the sliding block (3 d), two ends of the spring (3 e) are respectively arranged on the inner walls of the sliding block (3 d) and the second cavity (3 a 2), corresponding electromagnets (3 a 22) are arranged on the second cavity (3 a 2) and the sliding block (3 d), second exhaust holes (3 a 21) connected with the first cavity (3 a 1) are formed in the inner walls of the second cavity (3 a 2), buttons (3 a 12) corresponding to the sliding plate (3 c) are arranged on one side of the first exhaust holes (3 a 11), and the electromagnets (3 a 22) are electrically connected with the buttons (3 a 12).

5. The high efficiency polyethylene injection molding machine of claim 4, wherein: a discharging hole is formed in the side wall of the second cavity (3 a 2), and a hinged door leaf (3 a 13) is arranged in the discharging hole.

6. The high efficiency polyethylene injection molding machine according to any one of claims 1-5, wherein: the die (2) is provided with a first die (2 a) and a second die (2 b), one end of the first die (2 a) is fixedly connected with the output end of the injection gun (1), one end of the second die (2 b) is rotatably arranged at the other end of the first die (2 a), the air bubble exhausting device (3) is fixedly arranged above the first die (2 a), the first die (2 a) is provided with a plurality of discharging holes (2 a 1) along a central axis annular array, the second die (2 b) is provided with two groups of extruding holes (2 b 1) along the central axis annular array, the two groups of extruding holes (2 b 1) are respectively communicated with the discharging holes (2 a 1), and the two groups of extruding holes (2 b 1) are different in radius and are smaller than the radius of the discharging holes (2 a 1).

7. The high efficiency polyethylene injection molding machine of claim 6, wherein: the outer side of the second pressing die (2 b) is provided with an adjusting handle (2 b 2) for rotating the second pressing film, and the outer circumferential surface of the first pressing die (2 a) is provided with scale grooves corresponding to the two groups of pressing holes (2 b 1).