CN212147394U

CN212147394U - Ejection structure of injection mold

Info

Publication number: CN212147394U
Application number: CN202020101299.0U
Authority: CN
Inventors: 雷杰; 史顺芝
Original assignee: Kunshan Shunjiaxin Precision Mould Co ltd
Current assignee: Kunshan Shunjiaxin Precision Mould Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-12-15
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to an injection mold field discloses an injection mold's ejecting structure. The die comprises a moving die, a fixed die, a die cavity, a pressing assembly and an ejection assembly. The movable die is provided with a pressing assembly, and the pressing assembly comprises a rotating rod, a driving gear, a driven gear, a movable lifting rod and a pressing block. An ejection assembly for ejecting the forming die is arranged in the fixed die. The utility model discloses an adopt the cooperation setting that compresses tightly subassembly and ejecting subassembly, make when the mould shaping is ejecting, avoid ejecting speed very fast, and cause deformation or damage to forming die, improved forming die's surface accuracy and outward appearance.

Description

Ejection structure of injection mold

Technical Field

The utility model relates to an injection mold field, in particular to injection mold's ejecting structure.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification. In order to facilitate demolding of injection molded parts, ejection structures are often provided on injection molds. However, in most injection molds, because the pressing force of the upper mold and the lower mold is large, the forming mold is firmly adhered to the mold cavity, and if the ejection speed is too high, ejection deformation is caused to the forming mold, which affects the surface precision and the aesthetic degree of the forming mold.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides an injection mold's ejecting structure through the cooperation setting that adopts to compress tightly subassembly and ejecting subassembly, makes when the mould shaping is ejecting, avoids ejecting speed very fast, and leads to the fact deformation or damage to forming die, has improved forming die's surface accuracy and outward appearance.

The component is ejected out of the forming die when the movable die and the fixed die are just separated,

in order to achieve the above purpose, the technical scheme of the utility model is as follows:

an ejection structure of an injection mold comprises a movable mold, a fixed mold, a mold cavity, a pressing assembly and an ejection assembly; the movable die is arranged at the corresponding position of the fixed die, and the fixed die and the movable die are matched to form the die cavity; the movable die is internally provided with the pressing assembly, and the pressing assembly comprises a rotating rod, a driving gear, a driven gear, a movable lifting rod and a pressing block; the top of the movable die is vertically provided with the rotating rod, the driving gear is sleeved on the rotating rod, and the driving gear and the rotating rod synchronously rotate; the movable lifting rods are symmetrically arranged on two sides of the rotating rod, the driven gear meshed with the driving gear is sleeved on the movable lifting rods, and the driven gear and the movable lifting rods move synchronously; the movable lifting rod is provided with a ball spiral groove spirally surrounding the surface of the movable lifting rod, the movable die is internally provided with a ball retaining hole, driving balls are arranged in the ball retaining hole and are positioned at two sides of the movable lifting rod, and the driving balls are clamped in the ball spiral groove; the lower part of the movable lifting rod is provided with the pressing block, and the pressing block is pressed on the die cavity; the fixed die is internally provided with the ejection assembly for ejecting the forming die.

As a preferred scheme of the utility model, the ejection assembly comprises a hydraulic driver, a movable plate, a support column, an ejection plate, an auxiliary support block and a support spring; the die comprises a die cavity, a movable die and a support column, wherein a mounting groove is formed in the movable die, a hydraulic driver is mounted in the mounting groove, the movable plate is arranged at the output end of the hydraulic driver, the support column is vertically arranged at the middle position of the movable plate, the ejector plate is arranged on the support column and located at the bottom of the die cavity, auxiliary support blocks are arranged on the ejector plate, support springs are connected to the auxiliary support blocks, and one ends of the support springs are connected to the movable plate.

As an optimal scheme of the utility model be provided with on the compact heap around the sealing washer on the compact heap.

As an optimized proposal of the utility model, a rotating handle is arranged on the rotating rod.

As a preferred scheme of the utility model, a guide post is arranged on the fixed die; the movable die and the fixed die are matched with each other through the guide post.

As an optimal scheme of the utility model be provided with the sprue gate that is used for injection mold on the movable mould.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses an adopt the cooperation setting that compresses tightly subassembly and ejecting subassembly, make when the mould shaping is ejecting, avoid ejecting speed very fast, and cause deformation or damage to forming die, improved forming die's surface accuracy and outward appearance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

The corresponding part names indicated by the numbers and letters in the drawings:

1-pouring gate 2-driven gear 3-driving gear 4-rotating handle

5-rotating rod 6-movable lifting rod 7-ball spiral groove 8-driving ball

9-pressing block 10-sealing ring 11-moving die 12-guide post

13-fixed die 14-auxiliary supporting block 15-supporting spring 16-movable plate

17-hydraulic drive 18-support column 19-ejector plate 20-mould cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1, the utility model relates to an injection mold's ejecting structure, including movable mould 11, cover half 13, mould cavity 20, compress tightly subassembly and ejecting subassembly.

Specifically, a movable mold 11 is disposed at a corresponding position above the fixed mold 13, the fixed mold 13 and the movable mold 11 cooperatively form a mold cavity 20, and injection fluid flows into the mold cavity 20 for molding of the mold. Wherein, a guide post 12 is arranged on the fixed die 13, and the movable die 11 and the fixed die 13 are matched with each other through the guide post 12. The movable mold 11 is provided with a gate 1 for an injection mold. A pressing assembly is arranged in the movable die 11 and comprises a rotating rod 5, a driving gear 3, a driven gear 2, a movable lifting rod 6 and a pressing block 9. At the vertical dwang 5 that is provided with in top of movable mould 11, be provided with on dwang 5 and rotate handle 4, the cover is equipped with driving gear 3 on dwang 5, and driving gear 3 rotates with dwang 5 synchronous. The two sides of the rotating rod 5 are symmetrically provided with movable lifting rods 6, the movable lifting rods 6 are sleeved with driven gears 2 which are meshed with the driving gears 3, and the driven gears 2 and the movable lifting rods 6 move synchronously. Be provided with the ball helicla flute 7 that the spiral encircles on movable lifter 6 surface on movable lifter 6, be provided with the ball in movable mould 11 and keep the hole, install drive ball 8 in the ball keeps the downthehole, drive ball 8 is located movable lifter 6's both sides, and drive ball 8 card is located in ball helicla flute 7, and in the aforesaid, drive ball 8 and ball helicla flute 7 are used for making movable lifter 6 can only do the oscilaltion motion, avoid movable lifter 6's offset, influence the motion precision. And a pressing block 9 is arranged at the lower part of the movable lifting rod 6, and the pressing block 9 is pressed on the die cavity 20. A sealing ring 10 surrounding the pressure piece 9 is provided on the pressure piece 9 to improve the sealing of the mold cavity 20. An ejection assembly for ejecting the molding die is provided in the fixed die 13. The ejector assembly includes a hydraulic driver 17, a movable plate 16, a support column 18, an ejector plate 19, an auxiliary support block 14, and a support spring 15. The movable die is characterized in that a mounting groove is formed in the movable die 11, a hydraulic driver 17 is mounted in the mounting groove, a movable plate 16 is arranged at the output end of the hydraulic driver 17, a support column 18 is vertically arranged in the middle of the movable plate 16, an ejector plate 19 is arranged on the support column 18, and the ejector plate 19 is located at the bottom of a die cavity 20. The auxiliary supporting block 14 is arranged on the ejection plate 19, the supporting spring 15 is connected to the auxiliary supporting block 14, and one end of the supporting spring 15 is connected to the movable plate 16, so that the force used when the ejection plate 19 ejects the forming die is more uniform, and the ejection smoothness of the forming die is improved.

The utility model discloses an action principle process: when the forming die needs to be ejected, the rotating handle 4 is rotated firstly, the rotating rod 5 and the driving gear 3 are rotated synchronously, the driven gear 2 is driven to rotate, the movable lifting rod 6 and the pressing block 9 move downwards and are pressed on the forming die, at the moment, the fixed die 13 and the movable die 11 are in a separated state, and when the movable die 11 rises to a certain height, the pressing block 9 and the forming die are in a separated state. The hydraulic driver 17 is started to drive the movable plate 16 and the ejector plate 19 to move upwards, and the supporting spring 15 is in a telescopic state at the moment, so that the auxiliary supporting block 14 supports the ejector plate 19 to move upwards, the stress of the forming die is more uniform, and the ejecting smoothness and the surface quality of the forming die are improved. The phenomenon that the forming die is deformed or damaged due to the fact that the ejection speed is high is avoided, and the surface precision and the appearance of the forming die are improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ejection structure of an injection mold is characterized by comprising a movable mold, a fixed mold, a mold cavity, a pressing assembly and an ejection assembly; the movable die is arranged at the corresponding position of the fixed die, and the fixed die and the movable die are matched to form the die cavity; the movable die is internally provided with the pressing assembly, and the pressing assembly comprises a rotating rod, a driving gear, a driven gear, a movable lifting rod and a pressing block; the top of the movable die is vertically provided with the rotating rod, the driving gear is sleeved on the rotating rod, and the driving gear and the rotating rod synchronously rotate; the movable lifting rods are symmetrically arranged on two sides of the rotating rod, the driven gear meshed with the driving gear is sleeved on the movable lifting rods, and the driven gear and the movable lifting rods move synchronously; the movable lifting rod is provided with a ball spiral groove spirally surrounding the surface of the movable lifting rod, the movable die is internally provided with a ball retaining hole, driving balls are arranged in the ball retaining hole and are positioned at two sides of the movable lifting rod, and the driving balls are clamped in the ball spiral groove; the lower part of the movable lifting rod is provided with the pressing block, and the pressing block is pressed on the die cavity; the fixed die is internally provided with the ejection assembly for ejecting the forming die.

2. The ejection structure of an injection mold according to claim 1, wherein the ejection assembly includes a hydraulic driver, a movable plate, a support pillar, an ejection plate, an auxiliary support block, and a support spring; the die comprises a die cavity, a movable die and a support column, wherein a mounting groove is formed in the movable die, a hydraulic driver is mounted in the mounting groove, the movable plate is arranged at the output end of the hydraulic driver, the support column is vertically arranged at the middle position of the movable plate, the ejector plate is arranged on the support column and located at the bottom of the die cavity, auxiliary support blocks are arranged on the ejector plate, support springs are connected to the auxiliary support blocks, and one ends of the support springs are connected to the movable plate.

3. The ejection structure of an injection mold according to claim 1, wherein a seal ring is provided on the pressing block so as to surround the pressing block.

4. The ejection structure of an injection mold according to claim 1, wherein a turning handle is provided on the turning lever.

5. The ejection structure of an injection mold according to claim 1, wherein a guide post is provided on the fixed mold; the movable die and the fixed die are matched with each other through the guide post.

6. The ejection structure of an injection mold according to claim 1, wherein a gate for the injection mold is provided on the movable mold.