CN114393787A

CN114393787A - Forming die for plastic product forming process

Info

Publication number: CN114393787A
Application number: CN202210045935.6A
Authority: CN
Inventors: 万劲松; 曹优; 陈玉清; 范建祥
Original assignee: Lianyungang Jinxi New Material Technology Co ltd
Current assignee: Lianyungang Jinxi New Material Technology Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-04-26

Abstract

The invention discloses a forming die for a plastic product forming process, which comprises a frame body, wherein the frame body comprises a bottom plate and a cross beam, the cross beam is positioned above the bottom plate, the cross beam and the bottom plate are fixedly connected through two stand columns, and a supporting mechanism and a hydraulic telescopic rod are respectively arranged on the upper surface of the bottom plate and the lower surface of the cross beam; and the top die mechanism is arranged at the bottom of the lower injection die in a penetrating manner and is connected with the external cooling circulation mechanism. This forming die for plastic products forming technology, actuating mechanism drive the knocking mechanism and strike in the inside of injection mould down, utilize vibrations to make the working of plastics and the side inner wall of injection mould carry out the drawing of patterns separation down, and the circulating line among the outer cooling circulation mechanism can sink under the pushing action of last injection mould, then can drive the top mould mechanism and carry out the top under supporting mechanism's pushing action and move the drawing of patterns to the working of plastics when keeping away from as last injection mould.

Description

Forming die for plastic product forming process

Technical Field

The invention relates to the technical field related to plastic product molding, in particular to a molding die for a plastic product molding process.

Background

The plastic products shaping refers to the plastic carries out plastic shaping's course of working under the flexible or semi-liquid state at plastics, in this process, can utilize the soft characteristic of plastics high temperature to make appointed product shape with plastic raw materials, in order to mould plastics into appointed shape and standardize plastic shaping's uniformity, it carries out the shape restriction to flexible plastics to need to use forming die usually, the most common is the injection mold of plastics, specifically with in the liquid plastic material injection mold of high temperature, after cooling again, plastics just can form the shape with the corresponding product of the laminating of mould inner wall.

In a plastic product molding and processing mold of the chinese patent with publication number CN213260856U, in the technical scheme, a cooling coil is adopted to cool the plastic in the mold, and the cooled plastic part is demolded in a way that an electric push rod is used to push a push plate, and the above technical means has the following problems:

1. the cooling water in the cooling coil is in a disposable state, when the moisture in the cooling coil is heated by the material in the mold, the cooling water cannot cool in time, if the material in the mold is not cooled completely at the moment, the cooling water in the cooling coil can achieve the effect of water bath heat preservation with opposite effect, the cooling of the material is not facilitated, and meanwhile, the cooling water in the cooling coil in the technical scheme needs to be discharged after the cooling water is used, so that the water resource is greatly wasted, and the cooling water is not facilitated to be recycled;

2. the electric push rod band-pass ejector plate pushes the plastic part to be demolded, the ejector plate is located below the plastic part at the moment, demolding is completed by the plastic part ejection mold in a bottom-up mode, but the plastic part can be adhered to the inner wall of the side edge of the mold to a certain extent after injection molding is completed, so when the plastic part ejection mold is ejected from the lower side, demolding is not completed between the plastic part and the side wall of the mold at the moment, the plastic part is deformed and torn under the ejection action of the ejector plate, and the quality of the plastic part is affected.

In a plastic product molding mold of the chinese patent with publication number CN211566762U, the connecting rod, the pushing block and the second rotating plate are driven to move by pulling the handle, the second rotating plate drives the rotating wheel to change the position by the first rotating plate, the rotating wheel drives the pushing plate to drive the ejector rod to eject the mold, and the above technical means has the following problems:

1. the related structures are driven to carry out jacking demoulding in a hand-pulling mode, so that a related person needs to be independently arranged to pay attention to the injection moulding condition of the mould at any time, demoulding is carried out according to the injection moulding progress, automatic demoulding cannot be finished, and excessive manpower is occupied;

2. the runner is drawn according to its attached drawing when being pulled and can be known, the runner is by the one end of push pedal to its other end motion in the below of push pedal, the one end of push pedal can receive the driving force earlier this moment, the other end then does not have the driving force, so the push pedal at this moment is promoted in one end, under the condition that its other end does not have the promotion, the slope of certain degree can appear in push pedal self, though slightly, but still can increase the resistance of the vertical upper and lower displacement of push pedal, influence drawing of patterns effect, can lead to the relevant structure life to reduce under the action of frequently drawing of patterns simultaneously, and it is serious to consume the manpower.

Therefore, a need exists for a mold for plastic product molding process that addresses the above problems.

Disclosure of Invention

The invention aims to provide a forming die for a plastic product forming process, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a molding die for a plastic product molding process, comprising:

the frame body comprises a bottom plate and a cross beam, the cross beam is positioned above the bottom plate, the cross beam and the bottom plate are fixedly connected through two stand columns, and a supporting mechanism and a hydraulic telescopic rod are respectively installed on the upper surface of the bottom plate and the lower surface of the cross beam;

the upper injection mold is fixedly arranged at the lower end of the hydraulic telescopic rod for height adjustment, a material injection pipe is arranged on the upper injection mold, and a driving rack bar is fixedly arranged on the lower surface of the edge of the upper injection mold;

the lower injection mold is fixedly arranged at one end of the supporting mechanism, which is far away from the bottom plate, and is fixedly connected with the bottom plate through the supporting mechanism, the lower injection mold is positioned below the upper injection mold, and a cooling flow channel is formed in the lower injection mold;

the driving mechanism is arranged on the surface of the lower injection mould corresponding to the driving rack bar and is matched with the driving rack bar;

the knocking mechanism is positioned in a cooling flow channel inside the injection molding die and is mutually connected with the driving mechanism;

an external cooling circulation mechanism which is arranged on the outer side of the lower injection mould and above the bottom plate;

and the top die mechanism is arranged at the bottom of the lower injection die in a penetrating manner and is connected with the external cooling circulation mechanism.

Preferably, the supporting mechanism comprises a supporting column, a movable groove and a supporting spring, the upper end and the lower end of the supporting column are respectively and fixedly connected with the bottom injection mold and the bottom plate, the supporting column is provided with the movable groove, and the inner wall of the movable groove is fixedly welded with the supporting spring.

Preferably, the driving mechanism is symmetrically distributed at the outer side of the driving rack bar, the driving mechanism comprises a first shaft body, a driving gear, a first driving wheel, a transmission belt, a second driving wheel and a second shaft body, the first shaft body is rotatably installed on the surface of a lower injection mold, the first shaft body is fixedly provided with the driving gear and the first driving wheel, the driving gear is meshed with the driving rack bar, the transmission belt is arranged at the inner side of the first driving wheel, the first driving wheel is connected with the second driving wheel through the transmission belt, the second shaft body is fixedly installed on the second driving wheel and is rotatably connected with the lower injection mold in a penetrating mode, and the second shaft body is connected with the knocking mechanism in an interconnecting mode.

Preferably, the second driving wheels and the second shaft bodies are arranged in two groups, the number of the second driving wheels and the number of the second shaft bodies in each group are three, the second driving wheels in a single group are connected with each other through a driving belt, the second driving wheels are provided with two specifications, one second driving wheel is of a double-groove structure, and the other second driving wheel is of a single-groove structure.

Preferably, strike the mechanism including strike the dish, accomodate groove, connecting rod, reset spring and strike the piece, strike dish and second shaft body fixed connection, strike and seted up on the dish and accomodate the groove, the inboard of accomodating the groove is provided with the connecting rod, install reset spring between the inner wall in connecting rod and accomodating the groove, reset spring's one end integration is kept away from to the connecting rod is installed and is strikeed the piece.

Preferably, the connecting rod is of a T-shaped structure, and the connecting rod and the knocking disc form a telescopic structure through the return spring, the accommodating groove and the knocking disc.

Preferably, the external cooling circulation mechanism comprises a circulation pipeline, a corrugated hose, a micro circulation water pump, a heat dissipation fin and a cooling pipe, the circulation pipeline is located on the outer side of the lower injection mold, the circulation pipeline penetrates through the movable groove and penetrates through the support column, the corrugated hose is installed on the circulation pipeline, the circulation pipeline is connected with the lower injection mold through the corrugated hose, the micro circulation water pump is installed on the corrugated hose, the heat dissipation fin is installed on the surface, away from the lower injection mold, of the corrugated hose, the cooling pipe penetrates through the heat dissipation fin, the cooling pipe is fixedly installed on the upper surface of the bottom plate, and liquid nitrogen is arranged inside the cooling pipe.

Preferably, the circulating pipeline is made of copper metal, the circulating pipeline is of a U-shaped structure, the circulating pipeline and the radiating fins are integrally designed, the radiating fins are distributed on the circulating pipeline at equal intervals, and the radiating fins are in penetrating sliding connection with the cooling pipe.

Preferably, the top die mechanism comprises a cushion block, a push rod, a top die block and an adjusting groove, the cushion block is installed on the surface of the circulating pipeline, the push rod is welded at one end, away from the circulating pipeline, of the cushion block in an integrated mode, the end, away from the cushion block, of the push rod is connected with the top die block, and the adjusting groove is formed in the top die block.

Preferably, one end of the top module, which is far away from the adjusting groove, is of a trapezoidal structure, the upper surface of the top module is flush with the inner wall of the bottom of the lower injection mold, and the ejector rod and the top module form a telescopic structure through the adjusting groove.

Compared with the prior art, the invention has the beneficial effects that:

1. the driving mechanism and the external cooling circulation mechanism are respectively controlled to move by utilizing the die opening action and the die closing action between the upper injection die and the lower injection die, so that the driving mechanism can conveniently drive the knocking mechanism to knock the lower injection die, the plastic piece is separated from the inner wall of the side edge of the lower injection die by utilizing vibration, the condition of tearing deformation during subsequent ejection and demolding of the plastic piece is avoided, the production quality of the plastic piece is ensured, the circulation pipeline in the external cooling circulation mechanism can sink under the pushing action of the upper injection die, and when the upper injection die is far away, the ejection and demolding of the plastic piece can be driven by the ejector mechanism under the pushing action of the supporting mechanism;

2. circulating line carries out through connection through corrugated hose and the inside cooling runner of bottom casting mould, make things convenient for cooling water to circulate between circulating line and cooling runner and flow, and the equidistant heat radiation fins that are used for radiating that is provided with on the circulating line, and heat radiation fins runs through and installs in the outside of cooling tube, can utilize the low temperature that the inside liquid nitrogen of cooling tube gived off to strengthen heat radiation fins's radiating effect, promote circulating line cooling water's cooling efficiency, thereby be favorable to cooling water to maintain sufficient temperature when flowing into in the cooling runner by circulating line, promote the cooling shaping effect of working of plastics.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic side sectional view taken along line A-A of FIG. 1.

Fig. 3 is a schematic view of the mounting structure of the driving mechanism of the present invention.

FIG. 4 is a schematic top view of the driving mechanism of the present invention.

Fig. 5 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.

FIG. 6 is a schematic structural diagram of the supporting mechanism of the present invention.

FIG. 7 is a schematic view of the knocking mechanism of the present invention.

FIG. 8 is a schematic structural diagram of a top mold mechanism according to the present invention.

Fig. 9 is a schematic view showing the structure of the corrugated hose of the present invention.

In the figure: 1. a frame body; 11. a base plate; 12. a cross beam; 13. a support mechanism; 131. a support pillar; 132. a movable groove; 133. a support spring; 14. a hydraulic telescopic rod;

2. injection molding is carried out; 21. a material injection pipe;

3. a bottom pouring mould; 31. a cooling flow channel;

4. a drive rack;

5. a drive mechanism; 51. a first shaft body; 52. a drive gear; 53. a first drive pulley; 54. a transmission belt; 55. a second transmission wheel; 56. a second shaft body;

6. a knocking mechanism; 61. knocking the disc; 62. a receiving groove; 63. a connecting rod; 64. a return spring; 65. knocking the block;

7. an external cooling circulation mechanism; 71. a circulation pipe; 72. a corrugated hose; 73. a micro circulating water pump; 74. heat dissipation fins; 75. a cooling tube;

8. a mold ejecting mechanism; 81. cushion blocks; 82. a top rod; 83. a top module; 84. and (4) adjusting the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1-9, an embodiment of the present invention is shown:

a molding die for a plastic product molding process, comprising:

the frame body 1 comprises a bottom plate 11 and a cross beam 12, the cross beam 12 is positioned above the bottom plate 11, the cross beam 12 and the bottom plate 11 are fixedly connected through two upright posts, and a support mechanism 13 and a hydraulic telescopic rod 14 are respectively installed on the upper surface of the bottom plate 11 and the lower surface of the cross beam 12;

the upper injection mold 2 is fixedly arranged at the lower end of a hydraulic telescopic rod 14 for height adjustment, a material injection pipe 21 is arranged on the upper injection mold 2, and a driving toothed bar 4 is fixedly arranged on the lower surface of the edge of the upper injection mold 2;

the lower injection mold 3 is fixedly arranged at one end, far away from the bottom plate 11, of the supporting mechanism 13, the lower injection mold 3 is fixedly connected with the bottom plate 11 through the supporting mechanism 13, the lower injection mold 3 is positioned below the upper injection mold 2, and a cooling runner 31 is formed in the lower injection mold 3;

the driving mechanism 5 is arranged on the surface of the lower injection mould 3 corresponding to the driving rack bar 4, and the driving mechanism 5 is matched with the driving rack bar 4;

the knocking mechanism 6, the knocking mechanism 6 is positioned in the cooling runner 31 in the lower injection mould 3, the knocking mechanism 6 is connected with the driving mechanism 5;

an external cooling circulation mechanism 7, wherein the external cooling circulation mechanism 7 is arranged on the outer side of the lower injection mould 3 and above the bottom plate 11;

and the top die mechanism 8 are arranged at the bottom of the lower injection molding die 3 in a penetrating way, and the top die mechanism 8 is connected with the external cooling circulation mechanism 7.

In one embodiment, the supporting mechanism 13 includes a supporting column 131, a movable groove 132 and a supporting spring 133, the upper end and the lower end of the supporting column 131 are respectively and fixedly connected with the bottom injection mold 3 and the bottom plate 11, the movable groove 132 is formed in the supporting column 131, the supporting spring 133 is fixedly welded on the inner wall of the movable groove 132, when the bottom injection mold 3 is stably mounted on the bottom plate 11 through the supporting mechanism 13, the supporting mechanism 13 can also facilitate the subsequent circulation pipeline 71 to move in the supporting column 131, and the supporting spring 133 can also perform pressure bearing compression and reset resilience below the circulation pipeline 71, so that the circulation pipeline 71 is conveniently pushed to reset.

In one preferred embodiment, the driving mechanisms 5 are symmetrically distributed on the outer side of the driving rack bar 4, each driving mechanism 5 comprises a first shaft body 51, a driving gear 52, a first driving wheel 53, a transmission belt 54, a second transmission wheel 55 and a second shaft body 56, the first shaft body 51 is rotatably mounted on the surface of the lower injection mold 3, the driving gear 52 and the first driving wheel 53 are fixedly mounted on the first shaft body 51, the driving gear 52 is meshed with the driving rack bar 4, the transmission belt 54 is arranged on the inner side of the first driving wheel 53, the first driving wheel 53 is mutually connected with the second transmission wheel 55 through the transmission belt 54, the second shaft body 56 is fixedly mounted on the second transmission wheel 55, the second shaft body 56 is in penetrating and rotating connection with the lower injection mold 3, the second shaft body 56 is mutually connected with the knocking mechanism 6, two groups of the second transmission wheels 55 and the second shaft bodies 56 are arranged, the number of each group of the second transmission wheels 55 and the second shaft bodies 56 is three, the single groups of second transmission wheels 55 are connected with each other through a transmission belt 54, the second transmission wheels 55 are provided with two specifications, one second transmission wheel 55 is of a double-groove structure, the other second transmission wheel 55 is of a single-groove structure, so that when the driving rack bar 4 moves upwards under the driving of the upper injection mold 2, the driving rack bar 4 can drive the driving gear 52 to rotate, the driving gear 52 can drive the second transmission wheel 55 to rotate synchronously through the first transmission wheel 53 and the transmission belt 54, and meanwhile, the second transmission wheel 55 which is favorable for rotating drives the knocking mechanism 6 to knock and demold the inner wall of the lower injection mold 3 through the second shaft body 56.

In one specific embodiment, the knocking mechanism 6 comprises a knocking disc 61, an accommodating groove 62, a connecting rod 63, a return spring 64 and a knocking block 65, the knocking disc 61 is fixedly connected with the second shaft body 56, the knocking disc 61 is provided with the accommodating groove 62, the connecting rod 63 is arranged on the inner side of the accommodating groove 62, the return spring 64 is arranged between the connecting rod 63 and the inner wall of the accommodating groove 62, one end of the connecting rod 63, which is far away from the return spring 64, is integrally provided with the knocking block 65, the connecting rod 63 is of a T-shaped structure, the connecting rod 63 and the knocking disc 61 form a telescopic structure through the return spring 64 and the accommodating groove 62, when the second shaft body 56 drives the knocking mechanism 6 to rotate, the knocking disc 61 drives the knocking block 65 to rotate through the connecting rod 63, the knocking block 65 is convenient to knock on the inner wall of the lower injection mold 3 to generate vibration, and after the knocking block 65 finishes knocking, the connecting rod 63 is driven by the knocking block 65 to retract into the accommodating groove 62 under the resistance effect of the inner wall of the lower injection mold 3, until the knocking block 65 is no longer in contact with the inner wall of the lower injection mold 3, the knocking block 65 can be prevented from being stuck to the inner wall of the lower injection mold 3, and the knocking block 65 can not complete the circular knocking action.

In one preferred embodiment, the external cooling circulation mechanism 7 includes a circulation pipe 71, a corrugated hose 72, a micro circulation water pump 73, heat dissipation fins 74, and a cooling pipe 75, the circulation pipe 71 is located outside the lower injection mold 3, the circulation pipe 71 passes through a movable slot 132 and a support column 131, the corrugated hose 72 is installed on the circulation pipe 71, the circulation pipe 71 is connected with the lower injection mold 3 through the corrugated hose 72, the micro circulation water pump 73 is installed on the corrugated hose 72, the heat dissipation fins 74 are installed on the surface of the corrugated hose 72 away from the lower injection mold 3, the cooling pipe 75 is installed on the heat dissipation fins 74 in a penetrating manner, the cooling pipe 75 is fixedly installed on the upper surface of the bottom plate 11, liquid nitrogen is provided inside the cooling pipe 75, the circulation pipe 71 is made of copper metal, the circulation pipe 71 is in a U-shaped structure, and the circulation pipe 71 and the heat dissipation fins 74 are integrally designed, the heat dissipation fins 74 are distributed on the circulating pipeline 71 at equal intervals, and the heat dissipation fins 74 are in penetrating sliding connection with the cooling pipe 75, so that cooling water can flow in the circulating pipeline 71 and the cooling flow channel 31 in a circulating mode, the cooling pipe 75 conveniently filled with liquid nitrogen is matched with the heat dissipation fins 74 to perform timely heat dissipation and cooling treatment on the cooling water in the circulating pipeline 71, cooling water flowing into the cooling flow channel 31 can be guaranteed to maintain a certain low temperature, and the cooling forming effect of plastic parts can be effectively improved.

In one specific embodiment, the top mold mechanism 8 includes a cushion block 81, a top rod 82, a top module 83 and an adjusting groove 84, the cushion block 81 is installed on the surface of the circulation pipeline 71, the top rod 82 is integrally welded at one end of the cushion block 81 far away from the circulation pipeline 71, the end of the top rod 82 far away from the cushion block 81 is connected with the top module 83, the adjusting groove 84 is formed inside the top module 83, one end of the top module 83 far away from the adjusting groove 84 is of a trapezoidal structure, the upper surface of the top module 83 is flush with the inner wall of the bottom injection mold 3, the top rod 82 and the top module 83 form a telescopic structure through the adjusting groove 84, when the circulation pipeline 71 sinks and is pushed by the supporting spring 133 to ascend, the circulation pipeline 71 can drive the top mold mechanism 8 to move upwards synchronously, so as to facilitate ejecting and demolding, it should be noted that the top rod 82 and the top module 83 form a telescopic structure through the adjusting groove 84, the mold opening device is convenient for the driving rack bar 4 to drive the driving mechanism 5 to operate for a period of time when the upper injection mold 2 opens the mold, so that the driving mechanism 5 can drive the knocking mechanism 6 to perform one-time mold opening, the side wall mold opening of the lower injection mold 3 can be completed firstly, when the upper injection mold 2 rises to a certain height, the circulating pipeline 71 drives the cushion block 81 and the ejector rod 82 to operate to a certain height at the same time until the ejector rod 82 is completely retracted into the adjusting groove 84, at the time, the upper injection mold 2 continues to move upwards, the circulating pipeline 71 continues to move upwards, so that the ejector rod 82 completely retracted into the adjusting groove 84 starts to upwards push the ejector module 83 to eject and mold the plastic part, and the situation that the side surface of the ejector module 83 does not finish mold opening when ejecting and mold the plastic part to be ejected and molded is prevented from being torn and deformed is caused.

The working principle of the invention is as follows: as shown in fig. 1 and 2, when the device is used, cooling water is firstly injected through an injection port at the upper end of the circulation pipe 71 until the circulation pipe 71 and the cooling flow passage 31 are filled with the cooling water, then liquid nitrogen is added into the cooling pipe 75, after the completion, the circulation pipe 71 and the cooling pipe 75 are closed, then the hydraulic telescopic rod 14 is started, then the hydraulic telescopic rod 14 pushes the upper injection mold 2 to move downwards until the upper injection mold 2 and the lower injection mold 3 are closed, in the process, the upper injection mold 2 presses the circulation pipe 71 downwards to sink, simultaneously the upper injection mold 2 drives the driving rack 4 to move downwards synchronously, when the circulation pipe 71 sinks, the circulation pipe 71 moves downwards in the support column 131 through the movable groove 132, simultaneously the circulation pipe 71 presses and compresses the support spring 133, and the circulation pipe 71 pulls the push rod 82 through the cushion block 81 to draw out the adjusting groove 84, after the upper injection mold 2 and the lower injection mold 3 are closed, injecting high-temperature liquid plastic raw materials into a cavity formed by closing the upper injection mold 2 and the lower injection mold 3 through an injection pipe 21;

after the high-temperature liquid plastic raw material is injected into the mold cavity, the micro circulating water pump 73 on the circulating pipeline 71 is started, at the moment, the micro circulating water pump 73 pumps the cooling water in the circulating pipeline 71 and the cooling runner 31 to circularly flow, the cooling water in the cooling runner 31 cools the material in the mold cavity, meanwhile, the cooling water in the cooling runner 31 is gradually heated up, under the pumping of the micro circulating water pump 73, the cooling water in the cooling runner 31 flows into the circulating pipeline 71, the heated cooling water dissipates heat through the heat dissipating fins 74 on the surface of the circulating pipeline 71, and the heat dissipating effect of the heat dissipating fins 74 can be improved by the low temperature dissipated by the liquid nitrogen in the cooling pipe 75, so that the heated cooling water flows into the cooling runner 31 again for cooling work under the circulating flow action after heat dissipation is completed in the circulating pipeline 71;

after the plastic part is cooled and formed in the cavity, as shown in fig. 1-9, the hydraulic telescopic rod 14 drives the upper injection mold 2 to move away from the lower injection mold 3 to open the mold, at the same time, the upper injection mold 2 drives the driving rack 4 to move upwards, the driving rack 4 drives the driving gear 52 to rotate, the driving gear 52 drives the first driving wheel 53 to rotate synchronously through the first shaft body 51, the first driving wheel 53 drives the second driving wheel 55 to rotate through the driving belt 54, the second driving wheel 55 drives the knocking disc 61 to rotate through the second shaft body 56, as shown in fig. 1 and 7, the knocking disc 61 drives the knocking block 65 to rotate synchronously through the connecting rod 63 when rotating, until the knocking block 65 knocks on the inner wall of the lower injection mold 3, and the vibration generated by knocking makes the plastic part separate from the inner wall of the lower injection mold 3, after the knocking block 65 knocks on the inner wall of the lower injection mold 3, under the action of resistance of the inner wall of the lower injection mold 3, the knocking block 65 drives the connecting rod 63 to retract into the accommodating groove 62 until the knocking block 65 rotates to be not in contact with the inner wall of the lower injection mold 3, and then the return spring 64 pushes the connecting rod 63 to extend out of the accommodating groove 62, so that the knocking block 65 can continue to knock on the inner wall of the lower injection mold 3 after rotating for a circle;

as shown in fig. 1 and 6, while the upper mold 2 moves the driving rack 4 upward, the circulation pipe 71 is pushed by the supporting spring 133, the circulation pipe 71 moves upwards in the movable groove 132, at this time, the circulation pipe 71 drives the top rod 82 to move upwards through the cushion block 81, the top rod 82 gradually retracts into the adjusting groove 84 until the top rod 82 is inserted into the bottom of the adjusting groove 84, at this time, the upper injection mold 2 continues to move upwards, the circulating pipe 71 moves upwards under the urging of the supporting spring 133, so that the circulating pipe 71 drives the push rod 82 to move upwards, the push rod 82 pushes the top module 83 to move upwards, at this time, the top module 83 is pushed by the push rod 82 to extend out of the bottom inner wall surface of the lower injection mold 3, and the top module 83 pushes the cooled and formed plastic part out of the lower injection mold 3 to complete demolding.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A kind of plastic products shaping mold for process, characterized by that, it includes:

the frame body (1) comprises a bottom plate (11) and a cross beam (12), the cross beam (12) is located above the bottom plate (11), the cross beam (12) and the bottom plate (11) are fixedly connected through two upright posts, and a supporting mechanism (13) and a hydraulic telescopic rod (14) are respectively installed on the upper surface of the bottom plate (11) and the lower surface of the cross beam (12);

the upper injection mould (2), the upper injection mould (2) is fixedly arranged at the lower end of the hydraulic telescopic rod (14) for height adjustment, a material injection pipe (21) is arranged on the upper injection mould (2), and a driving rack bar (4) is fixedly arranged on the lower surface of the edge of the upper injection mould (2);

the lower injection mold (3) is fixedly arranged at one end, far away from the bottom plate (11), of the supporting mechanism (13), the lower injection mold (3) is fixedly connected with the bottom plate (11) through the supporting mechanism (13), the lower injection mold (3) is positioned below the upper injection mold (2), and a cooling flow channel (31) is formed in the lower injection mold (3);

the driving mechanism (5), the said driving mechanism (5) is mounted to the surface of the lower injection mould (3) corresponding to said driving rack bar (4), the said driving mechanism (5) cooperates with driving rack bar (4);

the knocking mechanism (6) is positioned in a cooling flow channel (31) inside the injection molding die (3), and the knocking mechanism (6) is connected with the driving mechanism (5);

an external cooling circulation mechanism (7), wherein the external cooling circulation mechanism (7) is arranged on the outer side of the lower injection mould (3) and above the bottom plate (11);

the top die mechanism (8) is mounted at the bottom of the lower injection die (3) in a penetrating mode, and the top die mechanism (8) is connected with the outer cooling circulation mechanism (7) mutually.

2. The molding die for a molding process of a plastic product according to claim 1, wherein: the supporting mechanism (13) comprises a supporting column (131), a movable groove (132) and a supporting spring (133), the upper end and the lower end of the supporting column (131) are fixedly connected with the bottom injection mold (3) and the bottom plate (11) respectively, the movable groove (132) is formed in the supporting column (131), and the supporting spring (133) is fixedly welded on the inner wall of the movable groove (132).

3. The molding die for a molding process of a plastic product according to claim 1, wherein: the driving mechanism (5) is symmetrically distributed at the outer side of the driving rack bar (4), the driving mechanism (5) comprises a first shaft body (51), a driving gear (52), a first driving wheel (53), a transmission belt (54), a second transmission wheel (55) and a second shaft body (56), the first shaft body (51) is rotatably installed on the surface of the lower injection mold (3), the driving gear (52) and the first transmission wheel (53) are fixedly installed on the first shaft body (51), the driving gear (52) is meshed and connected with the driving rack bar (4), the transmission belt (54) is arranged on the inner side of the first transmission wheel (53), the first transmission wheel (53) is connected with the second transmission wheel (55) through the transmission belt (54), the second shaft body (56) is fixedly installed on the second transmission wheel (55), and the second shaft body (56) is rotatably connected with the lower injection mold (3) in a penetrating manner, the second shaft body (56) is connected with the knocking mechanism (6).

4. The molding die for a molding process of a plastic product according to claim 3, wherein: the two groups of second transmission wheels (55) and the two groups of second shaft bodies (56) are arranged, the number of the second transmission wheels (55) and the number of the second shaft bodies (56) in each group are three, the single groups of second transmission wheels (55) are connected with each other through a transmission belt (54), the second transmission wheels (55) are provided with two specifications, one type of second transmission wheel (55) is of a double-groove structure, and the other type of second transmission wheel (55) is of a single-groove structure.

5. The molding die for a molding process of a plastic product according to claim 3, wherein: knocking mechanism (6) including strike dish (61), accomodate groove (62), connecting rod (63), reset spring (64) and strike piece (65), strike dish (61) and second shaft body (56) fixed connection, strike and seted up on dish (61) and accomodate groove (62), the inboard of accomodating groove (62) is provided with connecting rod (63), install reset spring (64) between connecting rod (63) and the inner wall of accomodating groove (62), reset spring (64) are kept away from in connecting rod (63) one end integration and are installed and strike piece (65).

6. The molding die for a molding process of a plastic product according to claim 5, wherein: the connecting rod (63) is of a T-shaped structure, and the connecting rod (63) and the knocking disc (61) form a telescopic structure through a return spring (64), a containing groove (62) and the knocking disc.

7. The molding die for a molding process of a plastic product according to claim 2, wherein: the external cooling circulation mechanism (7) comprises a circulation pipeline (71), a corrugated hose (72), a micro circulation water pump (73), heat dissipation fins (74) and a cooling pipe (75), wherein the circulation pipeline (71) is positioned on the outer side of the lower injection mold (3), the circulation pipeline (71) penetrates through a movable groove (132) and a support column (131) and is mutually penetrated, the corrugated hose (72) is installed on the circulation pipeline (71), the circulation pipeline (71) is mutually connected with the lower injection mold (3) through the corrugated hose (72), the micro circulation water pump (73) is installed on the corrugated hose (72), the heat dissipation fins (74) are installed on the surface, far away from the lower injection mold (3), of the corrugated hose (72), the cooling pipe (75) is installed on the heat dissipation fins (74) in a penetrating manner, and the cooling pipe (75) is fixedly installed on the upper surface of the base plate (11), liquid nitrogen is arranged inside the cooling pipe (75).

8. The molding die for a molding process of a plastic product according to claim 7, wherein: the circulating pipeline (71) is made of copper metal, the circulating pipeline (71) is of a U-shaped structure, the circulating pipeline (71) and the radiating fins (74) are designed in an integrated mode, the radiating fins (74) are distributed on the circulating pipeline (71) at equal intervals, and the radiating fins (74) are connected with the cooling pipe (75) in a penetrating mode in a sliding mode.

9. The molding die for a molding process of a plastic product according to claim 7, wherein: the top die mechanism (8) comprises a cushion block (81), a top rod (82), a top die block (83) and an adjusting groove (84), the cushion block (81) is installed on the surface of the circulating pipeline (71), the top rod (82) is welded at one end, away from the circulating pipeline (71), of the cushion block (81) in an integrated mode, the one end, away from the cushion block (81), of the top rod (82) is connected with the top die block (83), and the adjusting groove (84) is formed in the top die block (83) in an internal mode.

10. The molding die for a molding process of a plastic product according to claim 9, wherein: one end, far away from the adjusting groove (84), of the top module (83) is of a trapezoidal structure, the upper surface of the top module (83) is flush with the inner wall of the bottom of the lower injection mold (3), and the ejector rod (82) and the top module (83) form a telescopic structure through the adjusting groove (84).