CN210336755U

CN210336755U - Injection mold oblique ejector rod structure

Info

Publication number: CN210336755U
Application number: CN201921015503.0U
Authority: CN
Inventors: 王银土; 樊徐辉
Original assignee: Shanghai Fenghua Plastics Co ltd
Current assignee: Shanghai Fenghua Plastics Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-17
Anticipated expiration: 2029-07-02

Abstract

An object of the utility model is to provide an injection mold oblique ejector pin structure for solve the problem that exists among the prior art, including the mould, be located working hole on the mould with be located personally submit the ejector pin that is less than 90 contained angles in the working hole and with the level, ejecting device still has in the mould, ejecting device is including being located the kicking block of mould bottom with be located the driver of kicking block rear side, the kicking block upper end have with the ejector pin bottom ends to and the jacking face of interact, the driver is realized just through flexible removal kicking block the jack-up of ejector pin with fall down. The injection mold oblique ejector rod structure can effectively adapt to the ejection requirement of a complex curved surface, and has good operation smoothness and service life.

Description

Injection mold oblique ejector rod structure

Technical Field

The utility model relates to an injection mold technical field especially relates to an injection mold oblique ejector pin structure.

Background

Along with the progress of machining technology, the injection molding surface shape of the injection mold is greatly increased in order to provide a better stress structure and a pneumatic structure for an injection molding part, the shape complexity is greatly increased, and in order to ensure the demolding convenience of the more complex injection molding part, an inclined ejector rod for ejecting a complex curved surface in an inclined mode is applied to the injection mold.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold oblique ejector pin structure for solve the problem that exists among the prior art, through the ejecting demand of this injection mold oblique ejector pin structure can the complicated curved surface of effectual adaptation, have good smooth and easy nature of operation and life simultaneously.

To realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides an injection mold oblique ejector pin structure, includes the mould, is located working hole on the mould and being located personally submit the ejector pin that is less than 90 contained angles in the working hole and with the level, ejecting device still has in the mould, ejecting device is including being located the kicking block of mould bottom with be located the driver of kicking block rear side, the kicking block upper end have with the ejector pin bottom ends and supports and the jacking face of interact, the driver is realized just through flexible removal kicking block the jack-up and the drop of ejector pin.

As the utility model discloses a preferred, the jacking face includes by preceding first face, second face and the third that sets gradually after to, the second face is the bow-shaped face.

Preferably, the arcuate opening direction of the second surface is directed away from the direction of the push rod.

As the utility model discloses a preferred, jacking face surface covering has the wearing layer, the ejector pin with jacking face end department of supporting is the bulb.

As the utility model discloses a preferred, the ejector pin include by with the kicking block ends the department of supporting and upwards extends jacking section, linkage segment and the working section that sets up in proper order, working section top edge has the turn-ups.

As the utility model discloses a preferred, the turn-ups lower surface has protruding reticulation.

As the utility model discloses a preferred, include in the working hole by ejector pin and kicking block end department first chamber, second chamber and the third chamber that the ladder set up that makes progress, the movable position of jacking section is in first intracavity, the movable position of working section is in the third chamber, the linkage segment wear to establish with in the second chamber and its length be longer than the second chamber.

As the utility model discloses a preferred, the diameter of first chamber and third chamber is greater than the second chamber, working section releasable connection in the tip of linkage segment.

As the utility model discloses a preferred, first intracavity is equipped with to cup joint spring on the linkage segment, the spring both ends end respectively to the top of jacking section with on the ladder surface between first chamber and the second chamber.

As the utility model discloses an it is preferred, have the intercommunication in the mould the outside balancing hole of working hole and mould.

The beneficial effects of the utility model reside in that:

1. continuous and smooth jacking actions of the jacking rods are provided through the jacking surfaces of the jacking blocks, so that the jacking quality is ensured;

2. the arch surface of the jacking surface can provide an acceleration jacking effect during jacking, so that the injection molding part with the complex curved surface can be conveniently jacked out;

3. the jacking action track of the ejector rod is stable and smooth through the segmented structures of the working holes and the ejector rod, and good jacking effect and long service life of the ejector rod are guaranteed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the working section of the present invention;

the items in the figure are respectively: 1 mould, 2 working holes, 21 first chamber, 22 second chamber, 23 third chamber, 3 ejector pins, 31 jacking section, 32 linkage segment, 33 working segment, 34 turn-ups, 4 drivers, 41 kicking blocks, 42 jacking face, 421 first face, 422 second face, 423 third face, 5 springs, 6 balance holes.

Detailed Description

The present invention is described in detail below with reference to the attached drawings:

as shown in fig. 1, 2 an injection mold oblique ejector pin structure, including mould 1, be located work hole 2 on mould 1 and be located work hole 2 and personally submit ejector pin 3 that is less than 90 contained angles with the level, be equipped with the ejecting device who stretches into from the outside in the mould 1, ejecting device is including the kicking block 41 that is located mould 1 bottom and the cylinder driver 4 that is located kicking block 41 rear side, kicking block 41 upper end have with ejector pin 3 bottom end stop and interact's jacking face 42, driver 4 realizes the jack-up and the falling of ejector pin 3 through the flexible kicking block 41 that removes of cylinder.

In this embodiment, the whole top block 41 is of an approximately wedge-shaped structure, the top lifting surface 42 includes a first surface 421, a second surface 422 and a third surface 423 which are machined from front to back in sequence and are gradually enlarged from the wedge-shaped tip to the back, and the second surface 422 is an arc surface. The arcuate opening direction of the second face 422 points away from the jack 3. When the ejector rod 3 is received in the mold 1, the bottom of the ejector rod 3 is stopped against the first surface 421, and the driver 4 pushes out during work ejection, so that the second surface 422 and the third surface 423 sequentially skip below the ejector rod 3 to eject the ejector rod through the gradually-increased height, wherein the arched surface of the second surface 422 causes an acceleration which rises along a curved surface when the ejector rod 3 passes over the arched surface, so that the injection molding part is separated from the mold more powerfully through the additional acceleration, and possible adhesion of a complex curved surface on the mold is avoided.

In this embodiment, jacking face 42 surface covering has the wearing layer that high strength wear resistant plastic such as POM made, thereby ejector pin 3 is in stopping department for the bulb with jacking face 42 and avoid too fast wearing and tearing, life-span through less area of contact and wearing layer, and less area of contact reduces friction and also can make ejector pin 3's ejecting resistance littleer, and ejecting speed is faster.

In this embodiment, the top rod 3 includes a jacking section 31, a connecting section 32 and a working section 33, which are formed by extending and machining upwards from the stopping position of the top block 41 in sequence, and the top edge of the working section 33 is provided with a flange 34 which is horizontally outward. The flanging 34 can increase the contact area of the ejector rod 3 and the injection molding part so as to ensure that the surface of the injection molding part is not damaged during ejection.

In this embodiment, the lower surface of the cuff 34 has a raised texture formed by casting. The lower surface of the ejector rod 3 abuts against the surface of the mold 1 or concave holes in the surface when the ejector rod is not ejected, and the reticulate patterns are pressed on the surface of the mold 1 through a staggered structure to form a multi-layer sealing structure, so that plastic liquid is prevented from leaking into the reticulate patterns during injection molding, and the quality of the molding surface of the injection molding part at the position is guaranteed.

In this embodiment, the working hole 2 includes a first cavity 21, a second cavity 22 and a third cavity 23 which are arranged in a stepped manner upward at the stop position of the top rod 3 and the top block 41, the jacking section 31 is movably located in the first cavity 21, the working section 33 is movably located in the third cavity 23, and the diameter of the connecting section 32 is the same as that of the second cavity, so that the connecting section is just and stably inserted into the second cavity 22 and the length of the connecting section is longer than that of the second cavity 22, so that the connecting section can move along with the movement of the top rod, and meanwhile, the longer length of the connecting section can avoid the interference between the jacking section 31 and the working section 33 with the second cavity 22 during the relative telescopic movement.

In this embodiment, the diameter of first chamber 21 and third chamber 23 is greater than second chamber 22, working section 33 lower surface is equipped with the screw thread post, it passes through screw thread post releasable connection in linkage segment 32's tip, thereby make ejector pin 3 can install in working hole 2 on the one hand, on the other hand makes things convenient for the dismouting of working section 3, thereby after long-term the use, change the variant under the long-term high temperature high-down operational environment, the working section 3 of damage can be alone tear open and trade and maintain, reduce the maintenance cost, the life-span of whole mechanism is improved.

In this embodiment, install the spring 5 that cup joints on linkage segment 32 in the first chamber 21, thereby spring 5 both ends provide one with the elastic force that ejector pin 3 popped out downwards on the top of top and the first chamber 21 of top lift section 31 and the ladder face between the second chamber 22 respectively only to make it keep only to on kicking block 41, also do benefit to the reply of ejector pin 3 after ejecting, otherwise rely on the difficult timely reply of gravity of self under the slope structure.

In this embodiment, have the outside balancing hole 6 of intercommunication working hole 2 and mould 1 in the mould 1 and be used for intercommunication working hole 2 and outside air to make the air in working hole 2 can be discharged from balancing hole 6 along with the action of ejector pin 3, and then avoid going on of the air influence ejection action of compressed under the ejection action.

The above embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention, and the various modifications and improvements made by the ordinary person in the art without departing from the design concept of the present invention all fall into the protection scope of the present invention.

Claims

1. The utility model provides an injection mold oblique ejector pin structure, includes mould (1), is located working hole (2) on mould (1) and being located personally submit ejector pin (3) that are less than 90 contained angles in working hole (2) and with the level, a serial communication port, ejection device still has in mould (1), ejection device is including being located ejector block (41) of mould (1) bottom and being located the driver (4) of ejector block (41) rear side, ejector block (41) upper end have with ejector pin (3) bottom end to and interact's jacking face (42), driver (4) are realized just through flexible removal ejector block (41) the jack-up and the dropping of ejector pin (3).

2. An injection mold lifter structure according to claim 1, characterized in that the jacking surface (42) comprises a first surface (421), a second surface (422) and a third surface (423) which are arranged from front to back in sequence, and the second surface (422) is an arc surface.

3. An injection mould lifter structure according to claim 2, characterized in that the arcuate opening direction of the second face (422) points away from the lifter (3).

4. The injection mold lifter structure according to claim 2, characterized in that the surface of the jacking surface (42) is covered with a wear-resistant layer, and the stopping position of the lifter (3) and the jacking surface (42) is a ball head.

5. An injection mold lifter structure according to claim 1, characterized in that the lifter (3) comprises a jacking section (31), a connecting section (32) and a working section (33) which are sequentially extended upwards from the position where the lifter abuts against the top block (41), and the top edge of the working section (33) is provided with a flanging (34).

6. An injection mould (1) lifter bar (3) structure according to claim 5, characterized in that the lower surface of the flanging (34) has raised reticulation.

7. An injection mold lifter structure according to claim 5, characterized in that the working hole (2) comprises a first cavity (21), a second cavity (22) and a third cavity (23) which are arranged in an upward step by the stop of the lifter (3) and the top block (41), the lifting section (31) is movably located in the first cavity (21), the working section (33) is movably located in the third cavity (23), and the connecting section (32) is arranged in the second cavity (22) in a penetrating manner and has a length longer than that of the second cavity (22).

8. An injection mould lifter structure according to claim 7, characterized in that the first cavity (21) and the third cavity (23) have a larger diameter than the second cavity (22), and the working section (33) is detachably connected to the end of the connecting section (32).

9. An injection mold lifter structure according to claim 8, characterized in that a spring (5) sleeved on the connecting section (32) is arranged in the first cavity (21), and two ends of the spring (5) respectively abut against the top of the jacking section (31) and a stepped surface between the first cavity (21) and the second cavity (22).

10. An injection mould lifter bar structure according to claim 1, characterized in that the mould (1) is internally provided with a balance hole (6) communicating the working hole (2) and the outside of the mould (1).