CN218083845U

CN218083845U - Rotating disc type injection molding machine with pressure maintaining function

Info

Publication number: CN218083845U
Application number: CN202222228740.3U
Authority: CN
Inventors: 骆俊圆
Original assignee: Suzhou Lizhu Machinery Co ltd
Current assignee: Suzhou Lizhu Machinery Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-20
Anticipated expiration: 2032-08-23

Abstract

The utility model relates to a turntable type injection molding machine with pressure maintaining function, which comprises a workbench, a fixed frame which is positioned above the workbench and is shaped like a Chinese character 'hui', four guide posts which are vertically arranged and are used for connecting the workbench and the fixed frame, an upper template which is respectively sleeved on the four guide posts, an injection mechanism which is arranged in the middle of the upper template and the bottom of which passes through the upper template, two primary and secondary cylinders which are vertically arranged on the fixed frame and positioned at two sides of the injection mechanism, and a turntable mechanism which is arranged on the workbench and positioned below the upper template; the primary and secondary oil cylinders are used for driving the upper template to lift and have the functions of closing the dies and maintaining the pressure; the utility model discloses because the primary and secondary hydro-cylinder can drive the cope match-plate pattern and go up and down, have the compound die pressurize function simultaneously, compare with prior art, not only simple structure is compact, and greatly reduced manufacturing cost.

Description

Rotating disc type injection molding machine with pressure maintaining function

Technical Field

The utility model relates to a carousel formula injection molding machine of area pressurize function is refered in particular to in the field of moulding plastics.

Background

Injection molding machines are well known in the art for forming thermoplastic or thermoset plastics into plastic articles using plastic molding dies. The injection molding machine has the advantages that plastic products with complicated shapes, precise sizes or embedded parts can be molded in one step, the production rate is high, and the automation is easy to realize.

The turntable type injection molding machine with the mold locking function, disclosed as patent number 201921563443.6 previously applied by the company, comprises two mold locking oil cylinders which are vertically arranged on a fixed frame and are diagonally arranged for driving an upper mold plate to slide up and down and mold locking mechanisms positioned at two sides of an injection mechanism; each clamping mechanism comprises a pressurizing oil cylinder, a brake contracting rod and a brake contracting mechanism, wherein the pressurizing oil cylinder is arranged at the bottom of the fixing frame and is positioned between the two mould closing guide posts, the upper end of the brake contracting rod is connected with the output end of the pressurizing oil cylinder, the lower end of the brake contracting rod vertically penetrates through the upper template, and the brake contracting mechanism is arranged at the upper end of the upper template and is used for clamping or loosening the brake contracting rod; when the mould locking mechanism works, the upper mould plate is driven to move downwards through the mould closing oil cylinder until the upper mould and the lower mould are closed, and then the contracting brake rod is clamped through the contracting brake mechanism to realize mould locking; although the prior art has the mode locking function, the die closing oil cylinder and the die locking mechanism are independent, so that the whole structure is large, the requirement on equipment installation space is high, the structure is complex, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a carousel formula injection molding machine of area pressurize function in order to overcome prior art not enough.

In order to achieve the purpose, the utility model adopts the technical proposal that: a rotating disc type injection molding machine with a pressure maintaining function comprises a workbench, a fixing frame, four guide posts, an upper template, an injection mechanism, two primary and secondary cylinders and a rotating disc mechanism, wherein the fixing frame is positioned above the workbench and is shaped like a Chinese character 'hui', the four guide posts are vertically arranged and are used for connecting the workbench and the fixing frame, the upper template is respectively sleeved on the four guide posts, the injection mechanism is arranged in the middle of the upper template, the bottom of the injection mechanism penetrates through the upper template, the two primary and secondary cylinders are vertically arranged on the fixing frame and are positioned on two sides of the injection mechanism, and the rotating disc mechanism is arranged on the workbench and is positioned below the upper template; the primary and secondary oil cylinders are used for driving the upper template to lift and have the functions of closing and maintaining pressure.

Preferably, the primary and secondary oil cylinder comprises a primary cylinder vertically arranged on the fixed frame, a secondary cylinder vertically arranged in the primary cylinder and having a lower end penetrating through the fixed frame and connected with the upper template, and a piston rod vertically arranged in the primary cylinder and having a lower end extending into the secondary cylinder;

a master cylinder piston is arranged at the top of the slave cylinder, and a high-pressure cavity and a lower cavity are formed in the master cylinder; the top of the master cylinder is provided with a high-pressure oil inlet communicated with the high-pressure cavity, and the bottom of the master cylinder is provided with an air hole connected with the lower cavity;

a sub-cylinder piston is arranged at the bottom of the piston rod, and an open die cavity and a closed die cavity are formed in the sub-cylinder; and the top of the piston rod is respectively provided with a first oil way communicated with the die opening cavity and a second oil way communicated with the die closing cavity.

Preferably, the high-pressure oil inlet is connected with an oil filling valve.

Preferably, the turntable mechanism comprises a supporting shaft vertically arranged on the workbench, a turntable arranged above the workbench and sleeved with the supporting shaft at the middle part, an ejection mechanism arranged in the workbench and used for ejecting a product in the lower die, a positioning mechanism used for fixing the turntable, and a driving mechanism used for driving the turntable to rotate; a thrust bearing is sleeved on the supporting shaft between the turntable and the workbench; and a radial bearing is also sleeved between the turntable and the supporting shaft.

Preferably, a plurality of self-lubricating copper plates are respectively arranged at the bottom of the turntable on the workbench.

Preferably, the surface of the turntable is provided with an annular positioning groove; the workbench is provided with a plurality of positioning blocks extending into the annular positioning grooves.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the utility model has the advantages that the primary and secondary oil cylinders can drive the upper template to lift and lower, and simultaneously has the functions of mold closing and pressure maintaining, compared with the prior art, the structure is simple and compact, and the production cost is greatly reduced;

2. the utility model has the advantages that the thrust bearing is arranged between the turntable and the workbench, and the radial bearing is arranged between the turntable and the turntable, so that the abrasion can be greatly reduced, and the service life can be prolonged;

3. the utility model discloses a set up a plurality of self-lubricating copper bottom the carousel, can play support and lubrication action for the carousel is rotating and the compound die in-process, and is more steady, prevents that the back shaft from warping.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

fig. 1 is a schematic structural view of a turntable type injection molding machine with a pressure maintaining function according to the present invention;

FIG. 2 is a front sectional view of the neutron mother cylinder of the present invention;

FIG. 3 is a side sectional view of the neutron mother cylinder of the present invention;

FIG. 4 is a front view of the turntable mechanism of the present invention;

fig. 5 is a sectional view of the turntable mechanism of the present invention;

fig. 6 is a partial view of the middle turntable mechanism of the present invention.

Wherein: 1. a work table; 2. a fixed mount; 3. a guide post; 4. mounting a template; 5. an injection mechanism; 6. a primary cylinder and a secondary cylinder; 61. a master cylinder; 611. a high pressure chamber; 612. a lower cavity; 613. a high pressure oil inlet; 614. air holes; 62. a sub-cylinder; 621. opening a die cavity; 622. die assembling; 623. a first oil passage; 624. a second oil passage; 63. a piston rod; 64. a master cylinder piston; 65. a sub-cylinder piston; 66. a full oil valve; 7. a turntable mechanism; 71. a support shaft; 711. a thrust bearing; 712. a radial bearing; 72. a turntable; 73. an ejection mechanism; 74. a positioning mechanism; 75. a drive mechanism; 76. self-lubricating copper plate; 77. an annular positioning groove; 78. and (7) positioning the blocks.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1-6 show a turntable type injection molding machine with pressure maintaining function according to the present invention, which comprises a worktable 1, a fixing frame 2 located above the worktable 1 and shaped like a Chinese character 'hui', four guide pillars 3 vertically arranged for connecting the worktable 1 and the fixing frame 2, an upper mold plate 4 respectively sleeved on the four guide pillars 3, an injection mechanism 5 arranged in the middle of the upper mold plate 4 and having the bottom passing through the upper mold plate 4, two primary and secondary cylinders 6 vertically arranged on the fixing frame 2 and located at two sides of the injection mechanism 5, and a turntable mechanism 7 arranged on the worktable 1 and located below the upper mold plate 4; the primary and secondary oil cylinders are used for driving the upper template 4 to ascend and descend and have the functions of die assembly and pressure maintaining.

Before work, an upper die is installed at the bottom of the upper die plate 4, then two lower dies are installed on the turntable mechanism 7 respectively, and when one lower die is used for injection molding, the other lower die can take out a product, so that the production efficiency is improved;

when in work: the two primary and secondary cylinders 6 drive the upper template 4 to descend and move downwards until the upper die and the lower die are attached, and then the pressure maintaining function is started, so that the injection molding quality is improved.

Further, the primary and secondary oil cylinder comprises a primary cylinder 61 vertically arranged on the fixed frame 2, a secondary cylinder 62 vertically arranged in the primary cylinder 61 and having a lower end penetrating through the fixed frame 2 and connected with the upper template 4, and a piston rod 63 vertically arranged in the primary cylinder 61 and having a lower end extending into the secondary cylinder 62;

the top of the sub-cylinder 62 is provided with a main cylinder piston 64, and a high-pressure cavity 611 and a lower cavity 612 are formed in the main cylinder 61; a high-pressure oil inlet 613 communicated with the high-pressure cavity 611 is formed in the top of the female cylinder 61, and an air hole 614 connected with the lower cavity 612 is formed in the bottom of the female cylinder;

a sub-cylinder piston 65 is arranged at the bottom of the piston rod 63, and an open mold cavity 621 and a mold closing cavity 622 are formed in the sub-cylinder 62; the open mold cavity 621 is disposed above the mold clamping cavity 622; the top of the piston rod 63 is provided with a first oil path 623 communicated with the mold opening cavity 621 and a second oil path 624 communicated with the mold closing cavity 622 respectively.

When die assembly is carried out: hydraulic oil is firstly input into the die assembly cavity 622 through the second oil path 624, and the driving sub-cylinder 62 drives the upper die plate 4 to descend until the upper die and the lower die are attached; meanwhile, high-pressure oil is input into the high-pressure cavity 611 through a high-pressure oil inlet 613 to complete the mode locking action;

when the mold is opened: hydraulic oil is input into the mold opening cavity 621 through the first oil path 623, the driving sub-cylinder 62 drives the upper mold plate 4 to ascend, and at the moment, oil in the high-pressure cavity 611 and the mold closing cavity 622 flows back to an oil tank to realize mold opening.

Further, the high pressure oil inlet 613 is connected to the full oil valve 66, so as to provide high pressure oil quickly.

Further, the turntable mechanism 7 comprises a support shaft 71 vertically arranged on the workbench 1, a turntable 72 arranged above the workbench 1 and having a middle part sleeved on the support shaft 71, an ejection mechanism 73 arranged in the workbench 1 for ejecting a product in the lower mold, a positioning mechanism 74 for fixing the turntable 72, and a driving mechanism 75 for driving the turntable 72 to rotate; a thrust bearing 711 is sleeved on the supporting shaft 71 between the turntable 72 and the workbench 1; a radial bearing 712 is also sleeved between the turntable 72 and the supporting shaft 71; the utility model discloses a set up thrust bearing 711 between carousel and workstation 1 to and set up radial bearing 712 between carousel and carousel, the wearing and tearing that can significantly reduce improve life, wherein ejection mechanism 73, positioning mechanism 74 and actuating mechanism 75 are prior art, so no longer describe its structure in detail.

Further, a plurality of self-lubricating copper plates 76 are respectively arranged at the bottom of the turntable on the workbench 1, and can play a role in supporting and lubricating, so that the turntable is more stable in the rotating and mold closing processes, and the supporting shaft 71 is prevented from deforming.

Further, the surface of the turntable is provided with an annular positioning groove 77; the workbench 1 is provided with a plurality of positioning blocks 78 extending into the annular positioning grooves 77, so that the positioning effect can be achieved, the edge jumping in the rotating process of the turntable can be prevented, and the stability of the turntable is further improved.

The above is only a specific application example of the present invention, and does not set any limit to the protection scope of the present invention. All technical solutions formed by adopting equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a carousel formula injection molding machine of area pressurize function which characterized in that: the injection molding machine comprises a workbench, a fixing frame which is positioned above the workbench and is shaped like a Chinese character 'hui', four guide posts which are vertically arranged and used for connecting the workbench and the fixing frame, an upper template which is respectively sleeved on the four guide posts, an injection mechanism which is arranged in the middle of the upper template and the bottom of which penetrates through the upper template, two primary and secondary cylinders which are vertically arranged on the fixing frame and positioned at two sides of the injection mechanism, and a turntable mechanism which is arranged on the workbench and positioned below the upper template; the primary and secondary cylinders are used for driving the upper template to lift and have the functions of closing and maintaining pressure.

2. The turntable type injection molding machine with a pressure maintaining function according to claim 1, wherein: the primary and secondary cylinders comprise a primary cylinder vertically arranged on the fixed frame, a secondary cylinder vertically arranged in the primary cylinder and the lower end of the secondary cylinder penetrates through the fixed frame to be connected with the upper template, and a piston rod vertically arranged in the primary cylinder and the lower end of the piston rod extends into the secondary cylinder;

a master cylinder piston is arranged at the top of the slave cylinder, and a high-pressure cavity and a lower cavity are formed in the master cylinder; the top of the mother cylinder is provided with a high-pressure oil inlet communicated with the high-pressure cavity, and the bottom of the mother cylinder is provided with an air hole connected with the lower cavity;

a sub-cylinder piston is arranged at the bottom of the piston rod, and an open die cavity and a die closing cavity are formed in the sub-cylinder; and the top of the piston rod is respectively provided with a first oil path communicated with the die opening cavity and a second oil path communicated with the die closing cavity.

3. The rotary disc type injection molding machine with pressure maintaining function according to claim 2, wherein: and the high-pressure oil inlet is connected with the full oil valve.

4. The rotary disc type injection molding machine with a pressure maintaining function according to any one of claims 1 to 3, wherein: the rotary table mechanism comprises a supporting shaft vertically arranged on the workbench, a rotary table arranged above the workbench and sleeved with the supporting shaft at the middle part, an ejection mechanism arranged in the workbench and used for ejecting a product in the lower die, a positioning mechanism used for fixing the rotary table and a driving mechanism used for driving the rotary table to rotate; a thrust bearing is sleeved on the supporting shaft between the turntable and the workbench; and a radial bearing is also sleeved between the turntable and the supporting shaft.

5. The rotary disc type injection molding machine with a pressure maintaining function according to claim 4, wherein: and a plurality of self-lubricating copper plates are respectively arranged at the bottom of the turntable on the workbench.

6. The rotary disc type injection molding machine with a pressure maintaining function according to claim 5, wherein: the surface of the rotary table is provided with an annular positioning groove; and a plurality of positioning blocks extending into the annular positioning grooves are arranged on the workbench.