CN210999805U

CN210999805U - Hot runner system with inclined hot nozzle

Info

Publication number: CN210999805U
Application number: CN201921615456.3U
Authority: CN
Inventors: 潘欣宇; 铁盛武; 沈亮涵
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-07-14
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a hot runner system with oblique hot mouth, including the flow distribution plate, the main nozzle of setting at the flow distribution plate top surface, vertical hot mouth, hot mouth and hydro-cylinder to one side, every vertical hot mouth and every oblique hot mouth are connected in a hydro-cylinder that corresponds respectively, every vertical hot mouth or every oblique hot mouth communicate with the main nozzle through the flow distribution plate respectively, the left and right sides of flow distribution plate sets up one oblique hot mouth respectively at least, hot mouth includes hot runner barrel and sets up the oblique nozzle in hot runner barrel bottom to one side, the upper end fixed connection of hot runner barrel is in the bottom surface of flow distribution plate and through flow distribution plate and main nozzle intercommunication, oblique nozzle level sets up or the downward sloping sets up and the side of the injection direction orientation mould die cavity of oblique nozzle. The utility model discloses a hot runner system with oblique hot mouth through the orientation that changes oblique nozzle to the orientation is watered in more improving, thereby shortens to advance to water and fill terminal distance, does not increase the mould size and reaches the purpose of guaranteeing part outward appearance, control cycle of moulding plastics.

Description

Hot runner system with inclined hot nozzle

Technical Field

The present invention relates to a hot runner system, and more particularly to a hot runner system with an inclined hot nozzle.

Background

The injection molding part of the main body of the current automobile rear skin is U-shaped, and the lengths of the left side and the right side of the injection molding part in the X direction (front-back direction) of loading are continuously lengthened and basically reach more than 700 mm. The part material usually adopts thin-wall PP-T20, and the flow length needs to be controlled within 400 mm. And because the rear skin main body is widely in an internal parting die structure, the matching part of the rear skin main body, the side wall outer plate and the wheel cover liner adopts a die structure of a large lifter and a push block in order to hide a parting line, so that a pouring point position cannot be arranged at the matching part.

As shown in fig. 1, the existing hot runner system adopts a vertical hot nozzle 3, the injection direction of the vertical hot nozzle 3 is parallel to the mold opening direction of the mold (vertically downward), and due to the limitation of the product structure, the injection point position cannot be arranged at the position with the maximum distance in the X direction of the rear skin main body. The structure has the defects that:

1. the distance between the pouring point and the filling tail end reaches more than 700mm, the injection pressure is large, the injection molding period is long, and the debugging of the injection molding process and the control of the production rhythm are not facilitated;

2. the reduction printing risk appears at the filling end is great, because the matching department of back covering main part and side wall planking, wheel casing liner is mostly the processing of spraying paint, can enlarge the reduction printing problem after spraying paint, leads to influencing the whole appearance quality of part, increases the part disability rate, increases manpower and materials cost.

Disclosure of Invention

The utility model discloses a solve not enough among the prior art and accomplish, the utility model aims at providing a hot runner system with oblique hot mouth through the orientation that changes oblique nozzle to more improve the direction of watering, thereby shorten and advance to water and product X to filling terminal distance, do not increase the mould size and reach the purpose of guaranteeing part outward appearance, control cycle of moulding plastics.

The utility model discloses a hot runner system with oblique hot nozzle, be in including flow distribution plate, setting the main nozzle, the setting of flow distribution plate top surface are in vertical hot nozzle and oblique hot nozzle of flow distribution plate bottom surface and be used for the drive vertical hot nozzle with the hydro-cylinder that opens or close to oblique hot nozzle, every vertical hot nozzle and every oblique hot nozzle respectively with a that corresponds the hydro-cylinder is connected, and every vertical hot nozzle or every oblique hot nozzle pass through respectively the flow distribution plate with the main nozzle intercommunication, the left side and the right side of flow distribution plate set up one at least respectively oblique hot nozzle, oblique hot nozzle includes the hot runner barrel that vertical downwardly extending set up and sets up hot runner barrel bottom and the oblique nozzle rather than the intercommunication, the upper end fixed connection of hot runner barrel in the bottom surface of flow distribution plate and pass through the flow distribution plate with the main nozzle intercommunication, oblique nozzle level set up or the downward sloping setting and the injection direction of oblique nozzle is towards the die cavity of mould A side surface.

The utility model discloses a hot runner system with oblique hot mouth can also be:

the gun barrel comprises a barrel body, a gun barrel bottom is arranged in the barrel body, a piston is arranged in the barrel body and can reciprocate, the cylinder body is fixedly connected with the outer wall of the gun barrel bottom in a detachable mode, the piston is connected with the valve needle, the direction of the valve needle is consistent with that of the inclined nozzle, and the movement direction of the piston is consistent with that of the valve needle.

The included angle between the inclined nozzle and the horizontal plane is 0 degree, 45 degrees or 75 degrees.

The oil cylinder is controlled by an electromagnetic valve and connected with the electromagnetic valve, the electromagnetic valve is detachably fixed on one side of the hot runner line frame, and the splitter plate is fixedly arranged in the center of the hot runner line frame.

The utility model discloses a hot runner system with oblique hot nozzle, be in including flow distribution plate, setting the main nozzle, the setting of flow distribution plate top surface are in vertical hot nozzle and oblique hot nozzle of flow distribution plate bottom surface and be used for the drive vertical hot nozzle with the hydro-cylinder that opens or close to oblique hot nozzle, every vertical hot nozzle and every oblique hot nozzle respectively with a that corresponds the hydro-cylinder is connected, and every vertical hot nozzle or every oblique hot nozzle pass through respectively the flow distribution plate with the main nozzle intercommunication, the left side and the right side of flow distribution plate set up one at least respectively oblique hot nozzle, oblique hot nozzle includes the hot runner barrel that vertical downwardly extending set up and sets up hot runner barrel bottom and the oblique nozzle rather than the intercommunication, the upper end fixed connection of hot runner barrel in the bottom surface of flow distribution plate and pass through the flow distribution plate with the main nozzle intercommunication, oblique nozzle level set up or the downward sloping setting and the injection direction of oblique nozzle is towards the die cavity of mould A side surface. Thus, when molten plastic is injected, the glue material is heated to a molten state through a screw of an injection molding machine, enters the main nozzle and is distributed into the vertical hot nozzles and the inclined hot nozzles through the splitter plate, each vertical hot nozzle and each inclined hot nozzle respectively control the glue injection state (open or close) through a corresponding oil cylinder, the vertical hot nozzles vertically inject downwards, the inclined hot nozzles are modified and optimized on the basis of the traditional vertical hot nozzles, the hot runner barrels of the inclined hot nozzles are still arranged along the vertical direction, the direction of the inclined nozzles is changed to change the pouring direction, so that the pouring points can be arranged on the side surface of a mold cavity, the distance between the pouring points and the X-direction filling tail end of a product (rear skin main part) is shortened, when the length of the X-direction rear skin main part is longer, the injection flow length can be controlled within 300mm, the injection pressure is reduced, and the injection period is shortened, therefore, the debugging difficulty of the parts can be reduced, the production beat is reduced, the risk of the contraction print at the filling tail end is reduced, the painting qualification rate of the main parts of the rear skin can be effectively improved, the rejection rate is reduced, and the cost is saved. Meanwhile, the inclined hot nozzles are arranged on the left side and the right side of the flow distribution plate, and the hot runner gun barrel of the inclined hot nozzles still extends in the vertical direction, so that the size of the whole die is not increased, and the structure is simple. Specifically, the X-direction length of the main body of the CN185M rear skin is 802mm, the X-direction length of the main body of the CN120S rear skin is 700mm, if an oblique hot nozzle is not adopted, injection is carried out only through the vertical hot nozzle along the vertical direction, the injection molding longest flow length of the injection molding nozzle exceeds the longest flow length of a PP-T20 material, so that appearance problems such as reduction printing, cold materials and the like are caused, and by adopting the oblique hot nozzle, the injection molding longest flow length can be controlled within 400mm, so that the purposes of ensuring the appearance of a part and controlling the injection molding period are achieved. Compared with the prior art, the utility model discloses a hot runner system with oblique hot mouth has following advantage: the pouring direction is improved by changing the orientation of the inclined nozzle, so that the distance between the pouring point and the X-direction filling tail end of the product is shortened, the size of the mold is not increased, and the purposes of ensuring the appearance of the part and controlling the injection molding period are achieved.

Drawings

FIG. 1 is a schematic view of a hot runner system in the prior art.

Fig. 2 is a schematic view of a hot runner system with an angled hot nozzle according to the present invention.

Description of the figures

1 … flow distribution plate 2 … main nozzle 3 … vertical hot nozzle

4 … inclined hot nozzle 5 … oil cylinder 6 … hot runner gun barrel

7 … inclined nozzle 8 … solenoid valve 9 … hot runner line frame

Detailed Description

A hot runner system with an inclined hot nozzle according to the present invention will be described in further detail with reference to fig. 1 to 2.

The utility model discloses a hot runner system with oblique hot nozzle, please refer to fig. 1-2, including flow distribution plate 1, main nozzle 2 set up on the top surface of flow distribution plate 1, vertical hot nozzle 3 and oblique hot nozzle 4 set up on the bottom surface of flow distribution plate 1, and be used for driving hydro-cylinder 5 that vertical hot nozzle 3 and oblique hot nozzle 4 opened or closed, each vertical hot nozzle 3 and each oblique hot nozzle 4 respectively with a corresponding hydro-cylinder 5 is connected, each vertical hot nozzle 3 or each oblique hot nozzle 4 respectively through flow distribution plate 1 with main nozzle 2 intercommunication, the left side and the right side of flow distribution plate 1 set up one respectively at least oblique hot nozzle 4, oblique hot nozzle 4 includes hot runner barrel 6 that vertical downwardly extending set up and sets up in hot runner barrel 6 bottom and rather than the oblique nozzle 7 that communicates, the upper end of hot runner barrel 6 is fixed connection in the bottom surface of flow distribution plate 1 and through flow distribution plate 1 with hot nozzle 2 communicates, the inclined nozzle 7 is horizontally arranged or obliquely arranged downwards, and the spraying direction of the inclined nozzle 7 faces the side surface of the mold cavity. Thus, when molten plastic is injected, the glue material is heated to a molten state through a screw of an injection molding machine, enters the main nozzle 2, is distributed into the vertical hot nozzles 3 and the inclined hot nozzles 4 through the distribution plate 1, each vertical hot nozzle 3 and each inclined hot nozzle 4 respectively control the glue injection state (open or close) through a corresponding oil cylinder 5, the vertical hot nozzles 3 vertically downwards inject, the inclined hot nozzles 4 are modified and optimized on the basis of the traditional vertical hot nozzles 3, the hot runner barrel 6 of the inclined hot nozzles 4 is still arranged along the vertical direction, the orientation of the inclined nozzles 7 is changed to change the pouring direction, so that the pouring point can be arranged on the side surface of a mold cavity, the distance between the pouring point and a product (rear skin main part) X to the filling end is shortened, when the length of the rear skin main part X is longer, the injection flow length can be controlled within 300mm, the injection pressure is reduced, and the injection period is shortened, therefore, the debugging difficulty of the parts can be reduced, the production beat is reduced, the risk of the contraction print at the filling tail end is reduced, the painting qualification rate of the main parts of the rear skin can be effectively improved, the rejection rate is reduced, and the cost is saved. Meanwhile, the inclined hot nozzles 4 are arranged on the left side and the right side of the flow distribution plate 1, and the hot runner gun barrel 6 is still arranged in an extending mode in the vertical direction, so that the size of the whole die is not increased, and the structure is simple. Specifically, the X-direction length of the main body of the CN185M rear skin is 802mm, the X-direction length of the main body of the CN120S rear skin is 700mm, if the inclined hot nozzle 4 is not adopted, injection is carried out only through the vertical hot nozzle 3 along the vertical direction, the injection molding longest flow length of the injection molding nozzle exceeds the longest flow length of a PP-T20 material, so that appearance problems such as reduction printing, cold materials and the like are caused, and by adopting the inclined hot nozzle 4, the longest flow length of injection molding can be controlled within 400mm, so that the purposes of ensuring the appearance of parts and controlling the injection molding period are achieved. Compared with the prior art, the utility model discloses a hot runner system with oblique hot mouth 4 has following advantage: the pouring direction is improved by changing the orientation of the inclined nozzle 7, so that the distance between the pouring point and the X-direction filling tail end of the product is shortened, the size of the mold is not increased, and the purposes of ensuring the appearance of the part and controlling the injection molding period are achieved.

The utility model discloses a hot runner system with oblique hot mouth, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to fig. 2, can also be: the inclined nozzle 7 is internally provided with a valve needle for opening or closing the inclined nozzle 7, the valve needle is movably arranged in the inclined nozzle 7 in a penetrating manner and is connected with a glue outlet opening and closing manner of the inclined nozzle 7, a piston capable of reciprocating in the oil cylinder 5 is detachably and fixedly connected with the valve needle, the movement direction of the valve needle is consistent with the injection direction of the inclined nozzle 7, and the movement direction of the piston is consistent with the movement direction of the valve needle. Like this, be equipped with the needle rather than the injection direction unanimous in the oblique nozzle 7, needle is inside along its extending direction reciprocating motion at oblique hot nozzle 4, can realize opening and closing of the play jiao kou of oblique hot nozzle 4, and the motion of needle is controlled through hydro-cylinder 5, and the direction of motion of the piston of hydro-cylinder 5 is established to be unanimous with the direction of needle to drive the reciprocal linear motion of needle through the reciprocal linear motion of piston, play the effect of control needle. On the basis of the technical solution described above, it is further preferable that the cylinder body of the oil cylinder is detachably and fixedly connected with the outer wall of the bottom of the hot runner gun barrel. Like this, it is different at vertical hot mouth 3's top with hydro-cylinder 5 among the prior art to arrange, the orientation of oblique hot mouth 4 is inconsistent with the extending direction of hot runner barrel, if the hydro-cylinder 5 that the hot mouth corresponds to one side arranges the top that still arranges the hot mouth to one side, then the piston of hydro-cylinder can't or be difficult to drive the needle along the injection direction reciprocating motion of oblique hot mouth, hydro-cylinder 5 sets up the bottom at the barrel, the corner of hot mouth 4 to one side promptly, the hot runner barrel provides the mounted position of hydro-cylinder, the cylinder body of hydro-cylinder 5 is fixed on the outer wall of hot runner barrel, the problem of arranging of the hydro-cylinder that the hot mouth corresponds to one side has been solved.

The utility model discloses a hot runner system with oblique hot mouth, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to fig. 2, can also be: the included angle between the spraying direction of the inclined nozzle 7 and the horizontal plane is 0 degree, 45 degrees or 75 degrees. In this way, in the specific implementation, the included angle between the inclined nozzle 7 and the horizontal plane is usually three angles, such as 0 °, 45 °, or 75 °, but not limited to this, that is, the inclined nozzle 7 is ensured to be horizontally arranged or inclined downward.

The utility model discloses a hot runner system with oblique hot mouth, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to fig. 2, can also be: the oil cylinder 5 is controlled by an electromagnetic valve 8 and is connected with the electromagnetic valve 8, the electromagnetic valve 8 is detachably fixed on one side of a hot runner line frame 9, and the splitter plate 1 is fixedly arranged in the center of the hot runner line frame 9. Thus, the hot runner bobbin 9 provides a mounting position for the solenoid valve 8 by providing a solenoid valve 8 for individually controlling the operation of each cylinder 5. Specifically, when the glue reaches the inclined hot nozzle 4, the valve needle is in a non-retreating state, the nozzle cannot eject the glue, and when the oil cylinder 5 receives a signal of the electromagnetic valve 8, the valve needle is controlled to retreat, and the nozzle ejects the glue.

The utility model discloses a hot runner system with oblique hot mouth, on the basis of the technical scheme of the preceding description, please refer to fig. 1 to fig. 2, can also be: the flow distribution plate 1 is internally provided with flow distribution channels which are not communicated with each other, one end of each flow distribution channel is communicated with the main nozzle 2, each vertical hot nozzle 3 and each inclined hot nozzle 4 are respectively communicated with at least one flow distribution channel, and the vertical hot nozzles 3 and the inclined hot nozzles 4 are respectively communicated with the main nozzle 2 through the flow distribution channels. Thus, when molten plastic is injected, the rubber is heated to a molten state through a screw of the injection molding machine, enters the main nozzle 2, and is divided into the vertical hot nozzle 3 and the inclined hot nozzle 4 through the flow dividing channel of the flow dividing plate 1.

The above description is only for the specific embodiments of the present invention, but not for the scope of the present invention, all equivalent changes or modifications made according to the design spirit of the present invention should be considered as falling into the scope of the present invention.

Claims

1. A hot-runner system having an angled hot nozzle, comprising: comprises a flow distribution plate, a main nozzle arranged on the top surface of the flow distribution plate, vertical hot nozzles and inclined hot nozzles arranged on the bottom surface of the flow distribution plate, and oil cylinders used for driving the vertical hot nozzles and the inclined hot nozzles to open or close, wherein each vertical hot nozzle and each inclined hot nozzle are respectively connected with a corresponding oil cylinder, each vertical hot nozzle or each inclined hot nozzle is respectively communicated with the main nozzle through the flow distribution plate, the left side and the right side of the flow distribution plate are respectively provided with at least one inclined hot nozzle, each inclined hot nozzle comprises a hot runner barrel which vertically extends downwards and an inclined nozzle which is arranged at the bottom of the hot runner barrel and communicated with the hot runner barrel, the upper end of the hot runner gun barrel is fixedly connected to the bottom surface of the flow distribution plate and is communicated with the main nozzle through the flow distribution plate, the inclined nozzles are horizontally arranged or obliquely arranged downwards, and the spraying directions of the inclined nozzles face the side face of the mold cavity.

2. The hot-runner system with an angled hot nozzle as claimed in claim 1, wherein: the inclined nozzle is internally provided with a valve needle for opening or closing the inclined nozzle, the valve needle is movably arranged in the inclined nozzle in a penetrating manner and is connected with a glue outlet of the inclined nozzle in an opening-closing manner, a piston capable of reciprocating in the oil cylinder is detachably and fixedly connected with the valve needle, the movement direction of the valve needle is consistent with the injection direction of the inclined nozzle, and the movement direction of the piston is consistent with the movement direction of the valve needle.

3. The hot-runner system with an angled hot nozzle as claimed in claim 2, wherein: the cylinder body of the oil cylinder is detachably and fixedly connected with the outer wall of the bottom of the hot runner gun barrel correspondingly.

4. A hot-runner system with a beveled hot nozzle as defined in any one of claims 1 to 3, wherein: the included angle between the spraying direction of the inclined nozzle and the horizontal plane is 0 degree, 45 degrees or 75 degrees.

5. A hot-runner system with a beveled hot nozzle as defined in any one of claims 1 to 3, wherein: the oil cylinder is controlled by an electromagnetic valve and connected with the electromagnetic valve, the electromagnetic valve is detachably fixed on one side of the hot runner line frame, and the splitter plate is fixedly arranged in the center of the hot runner line frame.

6. A hot-runner system with a beveled hot nozzle as defined in any one of claims 1 to 3, wherein: the flow distribution plate is internally provided with flow distribution channels which are not communicated with each other, one end of each flow distribution channel is communicated with the main nozzle, each vertical hot nozzle and each inclined hot nozzle are respectively communicated with at least one flow distribution channel, and the vertical hot nozzles and the inclined hot nozzles are respectively communicated with the main nozzle through the flow distribution channels.