CN113459401A

CN113459401A - Pre-molding injection molding machine

Info

Publication number: CN113459401A
Application number: CN202110554220.9A
Authority: CN
Inventors: 徐郑; 张烁
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-10-01

Abstract

The invention relates to the technical field of injection molding machines, in particular to a pre-molding injection molding machine, which comprises an injection molding table, wherein the upper surface of the injection molding table is fixedly connected with a feeding cylinder, the front surface of the feeding cylinder is fixedly connected with a pushing mechanism, the back surface of the feeding cylinder is fixedly connected with a connecting pipe, one end of the connecting pipe, which is far away from the feeding cylinder, is fixedly connected with a lower mold, and the lower surface of the lower mold is fixedly connected with the upper surface of the injection molding table, the plastic melt can be conveyed into the lower die by arranging the feeding cylinder and the pushing mechanism, the bubbles in the melt can be broken by arranging the connecting pipe, by arranging the pressure display mechanism, the pressure of the lower die and the upper die after the molten liquid is injected can be visually judged, by arranging the die pressing mechanism, the lower die and the upper die can be pressed tightly during injection molding, and the lower die and the upper die are convenient to demould after injection molding, therefore, the pre-molding injection molding machine solves the problem that the strength of the plastic part is not enough due to air bubbles and pressure.

Description

Pre-molding injection molding machine

Technical Field

The description relates to the technical field of injection molding machines, in particular to a pre-molding injection molding machine.

Background

An injection molding machine, also known as an injection molding machine or an injection machine, is a main molding device for making thermoplastic plastics or thermosetting plastics into plastic products of various shapes by using a plastic molding mold, and is divided into a vertical type, a horizontal type and an all-electric type.

Present injection molding machine makes plastics melt through heating device, the inside injection of rethread injection pipe to the mould, plastic raw materials is the graininess, plastic granules melts and then fuses mutually when heating, but the inside of these plastics melt the liquid can contain a large amount of bubbles, can make injection moulding's working of plastics inside contain a large amount of cavitys, simultaneously because can't judge mould internal pressure, make easily that there is the space between the plastics melt the liquid in the mould, influence the intensity of working of plastics, and then can reduce the quality of product. Accordingly, one skilled in the art provides a pre-molding injection molding machine to solve the problems set forth in the background art described above.

Disclosure of Invention

An object of this description is to provide a pre-molding injection molding machine, current injection molding machine makes plastics melt through heating device, rethread injection pipe is to the inside injection of mould, the plastics raw materials is the graininess, the plastic granules melts and then fuses mutually when heating, but the inside of these plastics melt liquid can contain a large amount of bubbles, can make injection moulding's working of plastics inside contain a large amount of cavitys, simultaneously because unable judgement mould internal pressure, it has the space to make easily to have between the plastics melt liquid in the mould, influence the intensity of working of plastics, and then can reduce the quality of product, in order to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the present specification provides the following technical solutions:

the utility model provides a pre-molding injection molding machine, includes the platform of moulding plastics, the last fixed surface of the platform of moulding plastics is connected with a feeding section of thick bamboo, the positive fixedly connected with push mechanism of a feeding section of thick bamboo, the back fixedly connected with connecting pipe of a feeding section of thick bamboo, the one end fixedly connected with bed die of a feeding section of thick bamboo is kept away from to the connecting pipe, the lower surface of bed die and the last fixed surface of the platform of moulding plastics are connected, the inner wall fixedly connected with of bed die shows pressure mechanism, the last fixed surface of the platform of moulding plastics is connected with clamping mechanism, clamping mechanism's quantity is two, two clamping mechanism's opposite face rotates and is connected with the mould.

As a further aspect of the present description: push mechanism include with the positive fixed connection's of a feeding section of thick bamboo motor, the output of motor runs through the positive inner wall of a feeding section of thick bamboo and fixedly connected with axis of rotation, the fixed surface of axis of rotation is connected with the propelling movement cantilever, the propelling movement cantilever is the heliciform, through setting up motor and axis of rotation, can drive the propelling movement cantilever and rotate, and then with plastics melt liquid propelling movement forward.

As a still further aspect of the present description: the connecting pipe is an eccentric reducing pipe, the connecting pipe is arranged on the back of the feeding cylinder in a mode of butt joint of pipe tops, and bubbles in the molten liquid can be broken by butt joint of the connecting pipe with the eccentric reducing pipe tops.

As a still further aspect of the present description: the pressure display mechanism comprises a spring fixedly connected with the inner wall of the lower die, a sliding rod is inserted into the inner wall of the spring, a stress plate is fixedly connected with one end of the spring, a sliding hole is formed in the back face of the lower die, the surface of the sliding rod is slidably connected with the inner wall of the sliding hole, one end of the sliding rod is fixedly connected with the back face of the stress plate, the lower surface of the stress plate is slidably connected with the inner bottom wall of the lower die, identification scale marks are formed in the surface of the sliding rod, and the pressure in the lower die and the pressure in the upper die can be known by observing the identification scale marks through the arrangement of the spring, the sliding rod and the identification scale marks.

As a still further aspect of the present description: the last fixed surface of a feeding section of thick bamboo is connected with the feeder hopper, the feed inlet has been seted up with the corresponding position of feeder hopper to a feeding section of thick bamboo upper surface, through setting up the feeder hopper, can the person of facilitating the use pour into plastics into and melt liquid.

As a still further aspect of the present description: the compression molding mechanism comprises a threaded screw rod fixedly connected with the upper surface of the injection molding table, a sleeve is connected to the surface of the threaded screw rod in a threaded manner, a rotary table is fixedly connected to the top end of the sleeve, the sleeve can be rotated by arranging the threaded screw rod and the rotary table, and then the height of the upper mold is adjusted.

As a still further aspect of the present description: the upper surface fixedly connected with guide bar of the platform of moulding plastics, the back fixedly connected with guide ring of last mould, the surface of guide bar and the inner wall sliding connection of guide ring through setting up guide bar and guide ring, the skew appears when can preventing to go up the mould and move down.

As a still further aspect of the present description: the sleeve comprises an upper arc-shaped plate, a lower arc-shaped plate, a gasket, a screw and an annular air bag; the upper arc-shaped plate and the lower arc-shaped plate are fixed together through screws to form an annular unit, the annular units are sequentially and fixedly connected together, the section of each annular unit is oval, an annular unit with an oval section is formed by utilizing the arc structures of the upper arc-shaped plate and the lower arc-shaped plate, the strength of each annular unit can be enhanced, and the middle part of each annular unit is provided with a threaded hole matched with the threaded screw rod; the annular unit can be well fixed through the matching of the threaded screw rod and the threads, a cavity is formed between the upper arc-shaped plate and the lower arc-shaped plate, and an annular air bag is arranged in the cavity; the pressure die mechanism is at the during operation, and through setting up during the gas of annular gasbag in with the cylinder enters into the gas holder through the trachea, open admission valve messenger gas and be full of whole annular gasbag, can increase the area of contact inside and the screw thread of annular unit to reduce the pressure between sleeve and the screw lead screw, the quantity of gasket and screw is four in the annular unit, the gasket cooperatees with the screw, slide bar other end fixedly connected with cylinder in the pressure display mechanism, the cylinder other end has passed through trachea and gas holder, admission valve, the annular gasbag and has connected gradually, still installs discharge valve on the annular gasbag, utilizes the trachea can be better store earlier in the gas holder with the gas in the cylinder, carry annular gasbag inside through the admission valve.

Compared with the prior art, the beneficial effects of the description are that:

in this description, through setting up a feeding section of thick bamboo and push mechanism, can melt the liquid with plastics and carry in the lower mould, through setting up the connecting pipe, can make the bubble in the liquid of melting break, through setting up apparent pressure mechanism, can audio-visually judge the pressure after lower mould and last mould internal injection melt, through setting up die pressing mechanism, can compress tightly lower mould and last mould when moulding plastics, conveniently drawing of patterns behind moulding plastics simultaneously to make this mould pressing injection molding machine in advance solve the bubble and the pressure reason and cause the problem that working of plastics intensity is not enough.

Drawings

FIG. 1 is a schematic front view of the structure of the present description;

FIG. 2 is a side cross-sectional view of one of the structures of the present description;

FIG. 3 is a side cross-sectional view of the structure of the present description;

FIG. 4 is an enlarged view of the structure at A in FIG. 3 for the purpose of this description;

FIG. 5 is a side cross-sectional view of the sleeve construction of the present disclosure;

FIG. 6 is a schematic top view of a sleeve according to the present disclosure.

In the figure: 1. an injection molding table; 2. a feeding cylinder; 3. a pushing mechanism; 301. a motor; 302. a rotating shaft; 303. pushing the cantilever; 4. a connecting pipe; 5. a lower die; 6. a pressure-developing mechanism; 601. a spring; 602. a slide bar; 603. a stress plate; 604. marking scale marks; 7. a die pressing mechanism; 701. a threaded lead screw; 702. a sleeve; 7021. an upper arc plate; 7022. a lower arc-shaped plate; 7023. a gasket; 7024. a screw; 7025. an annular air bag; 703. a turntable; 8. an upper die; 9. a feed hopper; 10. a guide bar; 11. a guide ring; 12. a ring unit; 13. a threaded hole; 14. a cylinder; 15. an air tube; 16. a gas storage tank; 17. an intake valve; 18. and (4) exhausting the valve.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present description.

Referring to fig. 1-4, in the embodiment of the present disclosure, a pre-molding injection molding machine includes an injection molding table 1, a feeding cylinder 2 is fixedly connected to an upper surface of the injection molding table 1, a pushing mechanism 3 is fixedly connected to a front surface of the feeding cylinder 2, a connecting pipe 4 is fixedly connected to a back surface of the feeding cylinder 2, a lower mold 5 is fixedly connected to an end of the connecting pipe 4 away from the feeding cylinder 2, a lower surface of the lower mold 5 is fixedly connected to an upper surface of the injection molding table 1, a pressure-developing mechanism 6 is fixedly connected to an inner wall of the lower mold 5, a mold-pressing mechanism 7 is fixedly connected to an upper surface of the injection molding table 1, the number of the mold-pressing mechanisms 7 is two, an upper mold 8 is rotatably connected to opposite surfaces of the two mold-pressing mechanisms 7, a plastic melt can be conveyed into the lower mold 5 by the arrangement of the feeding cylinder 2 and the pushing mechanism 3, bubbles in the melt can be broken by the arrangement of the connecting pipe 4, and by the arrangement of the pressure-developing mechanism 6, pressure after the liquid is melted in can audio-visually judgement bed die 5 and the last mould 8 in, through setting up die pressing mechanism 7, can compress tightly bed die 5 and last mould 8 when moulding plastics, conveniently drawing of patterns after moulding plastics simultaneously to make this mould pressing injection molding machine in advance solve the problem that bubble and pressure reason cause the working of plastics intensity not enough.

The pushing mechanism 3 comprises a motor 301 fixedly connected with the front side of the feeding cylinder 2, the output end of the motor 301 penetrates through the inner wall of the front side of the feeding cylinder 2 and is fixedly connected with a rotating shaft 302, the surface of the rotating shaft 302 is fixedly connected with a pushing cantilever 303, the pushing cantilever 303 is spiral, and the motor 301 and the rotating shaft 302 are arranged to drive the pushing cantilever 303 to rotate so as to push the plastic melt forward; the connecting pipe 4 is an eccentric reducing pipe, the connecting pipe 4 is arranged on the back of the feeding cylinder 2 in a mode of pipe top butt joint, and bubbles in the molten liquid can be broken by butt joint of the connecting pipe 4 with the eccentric reducing pipe top; the pressure display mechanism 6 comprises a spring 601 fixedly connected with the inner wall of the lower die 5, a sliding rod 602 is inserted into the inner wall of the spring 601, one end of the spring 601 is fixedly connected with a stress plate 603, a sliding hole is formed in the back of the lower die 5, the surface of the sliding rod 602 is connected with the inner wall of the sliding hole in a sliding manner, one end of the sliding rod 602 is fixedly connected with the back of the stress plate 603, the lower surface of the stress plate 603 is connected with the inner bottom wall of the lower die 5 in a sliding manner, an identification scale mark 604 is formed in the surface of the sliding rod 602, the spring 601 is arranged, the sliding rod 602 and the identification scale mark 604 are arranged, and the pressure in the lower die 5 and the upper die 8 can be known by observing the identification scale mark 604.

The upper surface of the feeding cylinder 2 is fixedly connected with a feeding hopper 9, a feeding port is formed in the upper surface of the feeding cylinder 2 at a position corresponding to the feeding hopper 9, and a user can conveniently inject plastic melt through the feeding hopper 9; the die pressing mechanism 7 comprises a threaded screw rod 701 fixedly connected with the upper surface of the injection molding table 1, the surface of the threaded screw rod 701 is in threaded connection with a sleeve 702, the top end of the sleeve 702 is fixedly connected with a turntable 703, and the sleeve 702 can be rotated by arranging the threaded screw rod 701 and the turntable 703, so that the height of the upper die 8 can be adjusted; the upper surface fixedly connected with guide bar 10 of platform 1 moulds plastics, the back fixedly connected with guide ring 11 of upper mould 8, and the surface of guide bar 10 and the inner wall sliding connection of guide ring 11 through setting up guide bar 10 and guide ring 11, can prevent to go up that mould 8 from appearing the skew when moving down.

Wherein, as shown in fig. 5-6, the sleeve 702 comprises an upper arcuate plate 7021, a lower arcuate plate 7022, a spacer 7023, a screw 7024, and an annular air bladder 7025; the upper arc-shaped plate 7021 and the lower arc-shaped plate 7022 are fixed together through a screw 7024 to form an annular unit 12, the annular units 12 are sequentially and fixedly connected together, the section of each annular unit 12 is oval, the annular units 12 with oval sections are formed by utilizing the arc structures of the upper arc-shaped plate 7021 and the lower arc-shaped plate 7022, the strength of the annular units 12 can be enhanced, and the middle parts of the annular units 12 are provided with threaded holes 13 matched with the threaded screw rods 701; the annular unit 12 can be well fixed by matching the threaded screw rod 701 with the threaded hole 13, a cavity is formed between the upper arc-shaped plate 7021 and the lower arc-shaped plate 7022, and an annular air bag 7025 is arranged in the cavity; when the die pressing mechanism 7 works, gas in the air cylinder 14 enters the air storage tank 16 through the air pipe 15 by arranging the annular air bag 7025, the air inlet valve 17 is opened to enable the gas to be filled in the whole annular air bag 7025, the contact area between the inside of the annular unit 12 and the threaded lead screw 701 can be increased, so that the pressure between the sleeve 702 and the threaded lead screw 701 is reduced, the number of gaskets 7023 and the number of screws 7024 in the annular unit 12 are four, the gaskets 7023 are matched with the screws 7024, the other end of the sliding rod 602 in the pressure display mechanism 6 is fixedly connected with the air cylinder 14, the other end of the air cylinder 14 is sequentially connected with the air storage tank 16, the air inlet valve 17 and the annular air bag 7025 through the air pipe 15, the air outlet valve 18 is further installed on the annular air bag 7025, and the gas in the air cylinder 14 can be better stored in the air storage tank 16 firstly by utilizing the air pipe 15 and is conveyed to the inside the annular air bag 7025 through the air inlet valve 17.

The working principle is as follows: when the pre-molding injection molding machine is used, a user firstly rotates the rotary disc 703, the rotary disc 703 drives the sleeve 702 to rotate on the surface of the threaded screw rod 701, so that the sleeve 702 moves downwards, the sleeve 702 drives the upper mold 8 to move downwards to be attached and fixed with the lower mold 5, the guide rod 10 and the guide ring 11 are used for preventing the upper mold 8 from shifting in the process, then plastic melt is injected into the feeding cylinder 2 through the feeding hopper 9, the motor 301 (with the model of ZN-50) is opened, the output end of the motor 301 drives the rotating shaft 302 to rotate, the rotating shaft 302 drives the pushing cantilever 303 to rotate, the pushing cantilever 303 extrudes the melt forwards, when the melt passes through the connecting pipe 4, the connecting pipe 4 is installed in a mode that the tops of eccentric reducing pipes are in butt joint, so that bubbles in the melt are broken, bubbles in the melt are removed, the melt enters the lower mold 5 and the upper mold 8, and along with the increase of the melt, pressure grow, melt liquid extrusion atress board 603 and make it remove, atress board 603 makes spring 601 atress compression and drives slide bar 602 and shift out outside lower mould 5, observe the pressure in sign scale mark 604 can judge lower mould 5 and last mould 8, and then judge whether there is the space in the melt liquid, after the completion of moulding plastics, user antiport carousel 703, utilize sleeve 702 to drive upper mould 8 rebound, the convenient drawing of patterns, thereby make this pre-molding injection molding machine solve the problem that bubble and pressure reason cause the working of plastics intensity to be not enough.

The above description is only for the preferred embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present disclosure, and equivalents and modifications of the technical solutions and their description are included in the scope of the present disclosure.

Claims

1. The utility model provides a pre-molding injection molding machine, includes platform (1) of moulding plastics, its characterized in that: the utility model discloses an injection molding machine, including injection molding table (1), the last fixed surface of injection molding table (1) is connected with a feeding section of thick bamboo (2), the positive fixedly connected with push mechanism (3) of a feeding section of thick bamboo (2), back fixedly connected with connecting pipe (4) of a feeding section of thick bamboo (2), one end fixedly connected with bed die (5) of a feeding section of thick bamboo (2) are kept away from in connecting pipe (4), the lower surface of bed die (5) is connected with the last fixed surface of injection molding table (1), the inner wall fixedly connected with of bed die (5) shows pressure mechanism (6), the last fixed surface of injection molding table (1) is connected with die pressing mechanism (7), the quantity of die pressing mechanism (7) is two, two the opposite face of die pressing mechanism (7) is rotated and is connected with mould (8).

2. A pre-molding injection molding machine according to claim 1, characterized in that: push mechanism (3) include with feeding cylinder (2) front fixed connection's motor (301), the output of motor (301) runs through feeding cylinder (2) positive inner wall and fixedly connected with axis of rotation (302), the fixed surface of axis of rotation (302) is connected with propelling movement cantilever (303), propelling movement cantilever (303) are the heliciform.

3. A pre-molding injection molding machine according to claim 1, characterized in that: the connecting pipe (4) is an eccentric reducing pipe, and the connecting pipe (4) is arranged on the back of the feeding cylinder (2) in a mode of pipe top butt joint.

4. A pre-molding injection molding machine according to claim 1, characterized in that: the pressure display mechanism (6) comprises a spring (601) fixedly connected with the inner wall of a lower die (5), a sliding rod (602) is inserted into the inner wall of the spring (601), one end of the spring (601) is fixedly connected with a stress plate (603), a sliding hole is formed in the back face of the lower die (5), the surface of the sliding rod (602) is slidably connected with the inner wall of the sliding hole, one end of the sliding rod (602) is fixedly connected with the back face of the stress plate (603), the lower surface of the stress plate (603) is slidably connected with the inner bottom wall of the lower die (5), and an identification scale mark (604) is formed in the surface of the sliding rod (602).

5. A pre-molding injection molding machine according to claim 1, characterized in that: the upper surface of the feeding cylinder (2) is fixedly connected with a feeding hopper (9), and the upper surface of the feeding cylinder (2) is provided with a feeding port at a position corresponding to the feeding hopper (9).

6. A pre-molding injection molding machine according to claim 1, characterized in that: the compression molding mechanism (7) comprises a threaded screw rod (701) fixedly connected with the upper surface of the injection molding table (1), the surface of the threaded screw rod (701) is in threaded connection with a sleeve (702), and the top end of the sleeve (702) is fixedly connected with a turntable (703).

7. A pre-molding injection molding machine according to claim 1, characterized in that: the injection molding machine is characterized in that a guide rod (10) is fixedly connected to the upper surface of the injection molding table (1), a guide ring (11) is fixedly connected to the back surface of the upper mold (8), and the surface of the guide rod (10) is connected with the inner wall of the guide ring (11) in a sliding mode.

8. A pre-molding injection molding machine according to claim 1, characterized in that: the sleeve (702) comprises an upper arc-shaped plate (7021), a lower arc-shaped plate (7022), a gasket (7023), a screw (7024) and an annular air bag (7025); the upper arc-shaped plate (7021) and the lower arc-shaped plate (7022) are fixed together through a screw (7024) to form an annular unit (12), the annular units (12) are sequentially and fixedly connected together, and a threaded hole (13) matched with the threaded screw rod (701) is formed in the middle of each annular unit (12); a cavity is formed between the upper arc-shaped plate (7021) and the lower arc-shaped plate (7022), and an annular air bag (7025) is arranged in the cavity; the other end of the sliding rod (602) in the pressure display mechanism (6) is fixedly connected with an air cylinder (14), the other end of the air cylinder (14) is sequentially connected with an air storage tank (16), an air inlet valve (17) and an annular air bag (7025) through an air pipe (15), and an exhaust valve (18) is further installed on the annular air bag (7025).