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

Abstract

The utility model relates to a turntable injection molding machine with a pressure maintaining function, which comprises a workbench, a back-shaped fixing frame located above the workbench, four vertically arranged guide columns for connecting the workbench and the fixing frame, and sets of The upper template set on the four guide columns, the injection mechanism set in the middle of the upper template and the bottom passes through the upper template, two master cylinders vertically arranged on the fixed frame and located on both sides of the injection mechanism, set on the workbench The turntable mechanism on the top and below the upper template; the master and master oil cylinders are used to drive the upper template to rise and fall, and at the same time have the function of clamping and maintaining pressure; in the utility model, the master and master oil cylinders can not only drive the upper and lower templates, but also have the function of clamping and maintaining pressure. Compared with the prior art, the utility model not only has a simple and compact structure, but also greatly reduces the production cost.

Description

A rotary disc type injection molding machine with pressure maintaining function

technical field

The utility model relates to the field of injection molding, in particular to a rotary disc type injection molding machine with a pressure maintaining function.

Background technique

Injection molding machines are well known in the art for forming thermoplastic or thermosetting plastics into plastic articles using plastic forming molds. The advantage of the injection molding machine is that it can mold plastic products with complex shapes, precise dimensions or inserts at one time, with high productivity and easy automation.

For example, the patent No. 201921563443.6 previously applied by our company discloses a turntable injection molding machine with mold locking function, which includes two mold clamping cylinders vertically arranged on the fixed frame and placed diagonally to drive the upper template to slide up and down 1. Clamping mechanisms located on both sides of the injection mechanism; each of the clamping mechanisms includes a booster cylinder arranged at the bottom of the fixed frame and between two clamping guide posts, the upper end is connected to the output end of the booster cylinder and the lower end Vertically pass through the brake lever of the upper template, and be arranged on the upper end of the upper template for clamping or loosening the brake lever; when working: first drive the upper template to move downward through the mold clamping cylinder until the upper mold and The lower mold is closed, and then the brake lever is clamped by the brake mechanism to realize mold locking; although the existing technology has the mold locking function, the mold clamping cylinder and the mold locking mechanism are independent, which not only leads to a larger overall size, but also affects the installation space of the equipment. There are higher requirements, and the structure is complicated, which increases the production cost.

Utility model content

The purpose of the utility model is to provide a turntable injection molding machine with pressure maintaining function in order to overcome the deficiencies of the prior art.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a turntable injection molding machine with pressure maintaining function, including a workbench, a back-shaped fixing frame located above the workbench, four vertically arranged for connecting work The guide pillars of the table and the fixed frame, the upper template set on the four guide pillars respectively, the injection mechanism set in the middle of the upper template and the bottom passes through the upper template, two vertically arranged on the fixed frame and located on both sides of the injection mechanism. The sub-master cylinder on the side, the turntable mechanism set on the workbench and located under the upper template; the sub-master cylinder is used to drive the upper template to lift, and has the function of mold clamping and pressure maintenance.

Preferably, the sub-master oil cylinder includes a master cylinder vertically arranged on the fixed frame, a sub-cylinder vertically arranged in the mother cylinder and connected to the upper template through the fixed frame at the lower end, vertically arranged in the mother cylinder with the lower end The piston rod extending into the sub-cylinder;

The top of the sub-cylinder is provided with a master cylinder piston, which forms a high-pressure chamber and a lower chamber inside the master cylinder; the top of the master cylinder is provided with a high-pressure oil inlet connected to the high-pressure chamber, and the bottom is provided with an air hole connected to the lower chamber ;

The bottom of the piston rod is provided with a sub-cylinder piston, forming a mold opening cavity and a mold clamping cavity inside the sub cylinder; Second oil circuit.

Preferably, the high-pressure oil inlet is connected to the full oil valve.

Preferably, the turntable mechanism includes a support shaft vertically arranged on the workbench, a turntable arranged above the workbench with the middle part sleeved on the support shaft, and a device arranged in the workbench for ejecting the product in the lower mold. The ejector mechanism, the positioning mechanism for fixing the turntable, and the driving mechanism for driving the turntable to rotate; the support shaft is provided with a thrust bearing between the turntable and the worktable; the turntable and the support shaft are also sleeved There are radial bearings.

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

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

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

1. Compared with the existing technology, the utility model not only has a simple and compact structure, but also greatly reduces the production cost because the master-child cylinder can not only drive the upper template to lift up and down, but also has the function of clamping the mold and maintaining the pressure;

2. The utility model can greatly reduce wear and improve service life by setting a thrust bearing between the turntable and the worktable, and a centripetal bearing between the turntable and the turntable;

3. In the utility model, a plurality of self-lubricating copper plates are arranged at the bottom of the turntable, which can play a supporting and lubricating role, so that the turntable is more stable during the rotation and mold closing process, and the deformation of the support shaft is prevented.

Description of drawings

Below in conjunction with accompanying drawing, technical scheme of the utility model is further described:

Accompanying drawing 1 is the structural representation of the rotary disc type injection molding machine with pressure maintaining function described in the utility model;

Accompanying drawing 2 is the front cross-sectional view of son master cylinder of the utility model;

Accompanying drawing 3 is the side sectional view of son mother cylinder of the utility model;

Accompanying drawing 4 is the front view of the turntable mechanism in the utility model;

Accompanying drawing 5 is the cross-sectional view of the turntable mechanism in the utility model;

Accompanying drawing 6 is a partial view of the turntable mechanism in the utility model.

Among them: 1. Workbench; 2. Fixed frame; 3. Guide column; 4. Upper template; 5. Injection mechanism; High-pressure oil inlet; 614, air hole; 62, sub-cylinder; 621, mold opening cavity; 622, clamping cavity; 623, first oil circuit; 624, second oil circuit; 63, piston rod; 64, master cylinder piston ; 65, sub-cylinder piston; 66, full oil valve; 7, turntable mechanism; 71, support shaft; 711, thrust bearing; 712, centripetal bearing; 72, turntable; 73, ejection mechanism; 74, positioning mechanism; 75 , driving mechanism; 76, self-lubricating copper plate; 77, annular positioning groove; 78, positioning block.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Accompanying drawing 1-6 is the turntable type injection molding machine with pressure maintaining function described in the present utility model, comprises workbench 1, is located on the workbench 1 top and is in the shape of back shape 2, and four are vertically arranged to connect the workbench 1 and the guide pillars 3 of the fixed frame 2, the upper template 4 respectively sleeved on the four guide pillars 3, the injection mechanism 5 which is arranged in the middle of the upper template 4 and whose bottom passes through the upper template 4, and two vertically arranged on the fixed The sub-master cylinder 6 on the frame 2 and located on both sides of the injection mechanism 5, the turntable mechanism 7 arranged on the workbench 1 and below the upper template 4; Pressure holding function.

Before work, first install an upper mold on the bottom of the upper template 4, and then install two lower molds on the turntable mechanism 7 respectively. When one lower mold is in injection molding, the other lower mold can take out the product to improve production efficiency;

When working: the two master cylinders 6 drive the upper mold plate 4 to descend and move downward until the upper mold and the lower mold fit together, and then the pressure maintaining function is turned on to improve the injection molding quality.

Further, the sub-master oil cylinder includes a master cylinder 61 vertically arranged on the fixed frame 2, a sub-cylinder 62 vertically arranged in the master cylinder 61 and connected to the upper template 4 through the fixed frame 2 at the lower end, and vertically arranged on the In the master cylinder 61 and the piston rod 63 whose lower end extends into the child cylinder 62;

The top of the sub-cylinder 62 is provided with a master cylinder piston 64, forming a high-pressure chamber 611 and a lower chamber 612 inside the master cylinder 61; the top of the master cylinder 61 is provided with a high-pressure oil inlet 613 communicating with the high-pressure chamber 611, and the bottom An air hole 614 connected to the lower chamber 612 is provided;

The bottom of the piston rod 63 is provided with a sub-cylinder piston 65, forming a mold opening cavity 621 and a mold clamping cavity 622 inside the sub-cylinder 62; the mold opening cavity 621 is arranged above the mold clamping cavity 622; The top is respectively provided with a first oil passage 623 communicating with the mold opening cavity 621 and a second oil passage 624 communicating with the mold closing cavity 622 .

When closing the mold: first input hydraulic oil into the mold clamping cavity 622 through the second oil circuit 624, and drive the sub-cylinder 62 to drive the upper platen 4 down until the upper mold and the lower mold are attached; Input high-pressure oil into 611 to complete the mold locking action;

When opening the mold: input hydraulic oil into the mold opening cavity 621 through the first oil circuit 623, and drive the sub-cylinder 62 to drive the upper plate 4 to rise. At this time, the oil in the high pressure chamber 611 and the mold clamping cavity 622 returns to the oil tank to realize mold opening.

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

Further, the turntable mechanism 7 includes a support shaft 71 vertically arranged on the workbench 1, a turntable 72 arranged above the workbench 1 with the middle part sleeved on the support shaft 71, and arranged in the workbench 1 for turning the lower The ejection mechanism 73 for ejecting the product in the mold, the positioning mechanism 74 for fixing the turntable 72, and the driving mechanism 75 for driving the turntable 72 to rotate; Thrust bearing 711; a centripetal bearing 712 is set between the turntable 72 and the support shaft 71; the utility model is provided with a thrust bearing 711 between the turntable and the worktable 1, and a centripetal bearing is set between the turntable and the turntable. The bearing 712 can greatly reduce wear and improve the service life, wherein the ejection mechanism 73, the positioning mechanism 74 and the driving mechanism 75 are prior art, so their structures will not be described in detail.

Further, a plurality of self-lubricating copper plates 76 are respectively provided on the bottom of the turntable on the workbench 1, which can support and lubricate, make the turntable more stable during rotation and mold clamping, and prevent the support shaft 71 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 groove 77, which can play a positioning role and prevent the edge of the turntable from jumping during rotation. , to further improve the stability of the turntable.

The above are only specific application examples of the utility model, and do not constitute any limitation to the protection scope of the utility model. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the utility model.

Claims (6)

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.

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