CN219114708U

CN219114708U - Ejection device after injection molding

Info

Publication number: CN219114708U
Application number: CN202320078594.2U
Authority: CN
Inventors: 卢健; 王和忠; 王章窈; 郑福; 谭兴彬; 阮浩; 徐国杰
Original assignee: Wenzhou Kegong Precision Mould Co ltd
Current assignee: Wenzhou Kegong Precision Mould Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-02
Anticipated expiration: 2033-01-10

Abstract

The utility model relates to the technical field of injection molds and discloses an injection mold post-molding ejection device, wherein an injection mold is clamped between the top of a connecting plate and the inside of a mold frame, a limiting mold seat is fixedly arranged in the middle of the connecting plate, the left side and the right side of the connecting plate are movably connected with ejection support plates through bearings, the tops of the ejection support plates are transversely and fixedly connected with springs, and the inner ends of the springs are fixedly connected with the corresponding positions of the two sides of the limiting mold seat. This ejecting device after injection molding drives the motion of transmission piece and connecting plate through first cylinder to can drive the motion of spacing die holder and centre form seat, and when descending to certain position, promote the perk of ejecting extension board through the arch of die frame bottom both sides, and then can separate between injection mold and the spacing die holder, make injection mold bottom be the cavity state, made things convenient for follow-up ejecting to the product body.

Description

Ejection device after injection molding

Technical Field

The utility model relates to the technical field of injection molds, in particular to a post-molding ejection device for injection molding parts.

Background

The injection mold is a tool for producing plastic products; the plastic injection molding machine is also a tool for endowing plastic products with complete structures and precise dimensions, and injection molding is a processing method used for mass production of parts with certain shapes. The injection molding machine is used for injecting heated and melted plastic into a mold cavity at high pressure, cooling and solidifying are carried out to obtain a formed product, the injection mold is generally provided with an ejection mechanism, and the ejection mechanism of the injection molding machine has a certain ejection force and can eject the product from the mold.

When the common ejection mechanism ejects a product in the die, the hydraulic mechanism drives the ejector rod to move up and down to generate thrust to the bottom of the product, so that the product is ejected after being separated from the die.

However, the ejector rod has a single action point when ejecting a product, so that the ejection force of the product is uneven, the phenomenon of clamping a mold is easy to occur when ejecting the product, ejection is difficult to occur, and a common ejection mechanism has a large friction force and adsorption force between the mold and the product due to small gaps between the product and the mold when directly ejecting the product, so that the ejection speed is low and the ejection force is blocked, and the ejection requirement of the injection mold cannot be met.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides an ejection device for an injection molding part after molding, which aims to solve the problems in the prior art.

(II) technical scheme

In a first aspect, the present utility model provides the following technical solutions: the utility model provides an ejecting device behind injection molding, includes the mould frame, injection molding hole has been seted up at the top of mould frame, logical groove has all been seted up at the left and right sides middle part of mould frame, and all peg graft in the left and right sides middle part of mould frame has the connecting plate, the joint has injection mold between the inside of top and the mould frame of connecting plate, the middle part fixed mounting of connecting plate has spacing die holder, the left and right sides of connecting plate all has ejecting extension board through bearing swing joint, and the equal horizontal fixedly connected with spring in top of ejecting extension board, the inner of spring all corresponds position fixed connection with the both sides of spacing die holder.

In a second aspect, protrusions bent inwards are arranged on the left side and the right side of the bottom of the die frame, and the top surfaces of the protrusions are obliquely arranged.

In the third aspect, the outer ends of the connecting plates are fixedly connected with transmission blocks, and the bottoms of the transmission blocks are fixedly provided with first cylinders.

In a fourth aspect, the top of the limiting die holder is fixedly provided with an inner die holder, the inside of the injection mold is respectively inserted with a product body, and the left side and the right side of the inside of the limiting die holder and the inner die holder are respectively provided with an ejection groove.

In a fifth aspect, ejector rods are inserted into the ejector grooves on the left side and the right side of the inside of the limiting die holder and the inside of the internal die holder, the top ends of the ejector rods are flush with the top of the internal die holder, and the rod bodies of the ejector rods are longer than the bottom of the die frame.

In a sixth aspect, bottom ends of the ejector rods are fixedly connected with a bottom plate, and a second cylinder is fixedly arranged in the middle of the bottom plate.

Advantageous effects

Compared with the prior art, the utility model provides an ejection device after injection molding, which has the following beneficial effects:

1. according to the injection molding part post-molding ejection device, the first cylinder drives the transmission block and the connecting plate to move, so that the limiting die holder and the inner die holder can be driven to move, when the injection molding part post-molding ejection device descends to a certain position, the protrusions on two sides of the bottom of the die holder push the ejection support plate to tilt, and then the injection molding die and the limiting die holder can be separated, so that the bottom of the injection molding die is in a hollow state, the subsequent ejection of a product body is facilitated, and the excessive adsorption force between the injection molding die and the product body is avoided;

2. this ejecting device after injection molding drives the motion of bottom plate and ejector rod through the second cylinder to can all produce the thrust to the bottom both sides of product body, make the ejecting force to the product body all with, avoided taking place the phenomenon of card mould at ejecting in-process.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the mold frame of the present utility model;

fig. 3 is a schematic view of the structure of the ejector rod according to the present utility model.

In the figure: 1. a mold frame; 2. injection molding holes; 3. an injection mold; 31. a product body; 4. a connecting plate; 5. limiting die holder; 51. an inner die holder; 6. a transmission block; 7. a first cylinder; 8. ejecting the support plate; 9. a spring; 10. an ejector rod; 11. a bottom plate; 12. and a second cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a technical scheme, an ejection device after injection molding, which comprises a mold frame 1, injection holes 2, an injection mold 3, a product body 31, a connecting plate 4, a limiting mold seat 5, an inner mold seat 51, a transmission block 6, a first air cylinder 7, an ejection support plate 8, springs 9, an ejection rod 10, a bottom plate 11 and a second air cylinder 12, wherein the injection holes 2 are formed in the top of the mold frame 1, through grooves are formed in the middle parts of the left side and the right side of the mold frame 1, the connecting plate 4 is inserted in the middle parts of the left side and the right side of the mold frame 1, the injection mold 3 is clamped between the top of the connecting plate 4 and the inside of the mold frame 1, the limiting mold seat 5 is fixedly arranged in the middle part of the connecting plate 4, the ejection support plate 8 is movably connected with the left side and the right side of the connecting plate 4 through bearings, the springs 9 are transversely fixedly connected with the top of the ejection support plate 8, and the inner ends of the springs 9 are fixedly connected with the corresponding positions of the two sides of the limiting mold seat 5.

The left and right sides of the bottom of the mold frame 1 are provided with the bulges which bend inwards, and the top surfaces of the bulges are obliquely provided, so that the ejector support plate 8 can be jacked up in the process that the connecting plate 4 drives the ejector support plate 8 to descend, and then the ejector support plate 8 can push the injection mold 3 to ascend.

The outer end of the connecting plate 4 is fixedly connected with a transmission block 6, and the bottom of the transmission block 6 is fixedly provided with a first cylinder 7, so that the transmission block 6 and the connecting plate 4 can be driven to move up and down conveniently.

Referring to fig. 3, an inner mold base 51 is fixedly mounted at the top of the limiting mold base 5, the product body 31 is inserted into the injection mold 3, and ejection grooves are formed on the left and right sides of the inner sides of the limiting mold base 5 and the inner mold base 51.

The ejector rods 10 are inserted into the ejector grooves on the left side and the right side of the inside of the limiting die holder 5 and the inside of the inner die holder 51, the top ends of the ejector rods 10 are flush with the top of the inner die holder 51, the rod body of the ejector rods 10 is longer than the bottom of the die holder 1, and the first air cylinder 7 drives the transmission block 6 and the connecting plate 4 to move, so that the limiting die holder 5 and the inner die holder 51 can be driven to move, and when the limiting die holder is lowered to a certain position, the protrusions on the two sides of the bottom of the die holder 1 push the ejector supporting plate 8 to lift, and then the injection die 3 and the limiting die holder 5 can be separated, so that the bottom of the injection die 3 is in a hollow state, the subsequent ejection of the product body 31 is facilitated, and the excessive adsorption force between the injection die 3 and the product body 31 is avoided.

Referring to fig. 2, the bottom ends of the ejector rods 10 are fixedly connected with a bottom plate 11, a second cylinder 12 is fixedly mounted at the middle position of the bottom plate 11, and the second cylinder 12 drives the bottom plate 11 and the ejector rods 10 to move, so that thrust can be generated on both sides of the bottom of the product body 31, ejection force on the product body 31 is equal, and the phenomenon of die clamping in the ejection process is avoided.

The working principle of the device is as follows: firstly, the first cylinder 7 is started to drive the transmission block 6 and the connecting plate 4 to move so as to drive the limiting die holder 5 and the inner die holder 51 to move, and when the limiting die holder is lowered to a certain position, the protrusions on two sides of the bottom of the die frame 1 push the ejection support plate 8 to lift up, so that the injection die 3 and the limiting die holder 5 can be separated, the bottom of the injection die 3 is in a hollow state, the subsequent ejection of the product body 31 is facilitated, the excessive adsorption force between the injection die 3 and the product body 31 is avoided, and the second cylinder 12 is started to drive the bottom plate 11 and the ejection rod 10 to move so as to generate thrust on two sides of the bottom of the product body 31, so that the ejection force on the product body 31 is equal, and the phenomenon of clamping in the ejection process is avoided.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an ejecting device behind injection molding, includes mould frame (1), its characterized in that: injection molding hole (2) have been seted up at the top of mould frame (1), logical groove has all been seted up at the left and right sides middle part of mould frame (1), and all peg graft in the left and right sides middle part of mould frame (1) have connecting plate (4), the joint has injection mold (3) between the top of connecting plate (4) and the inside of mould frame (1), the middle part fixed mounting of connecting plate (4) has spacing die holder (5), the left and right sides of connecting plate (4) all has ejecting extension board (8) through bearing swing joint, and the equal transverse connection in top of ejecting extension board (8) has spring (9), the inner of spring (9) all corresponds position fixed connection with the both sides of spacing die holder (5).

2. The post-injection molding ejector according to claim 1, wherein: the left side and the right side of the bottom of the die frame (1) are provided with bulges which bend inwards, and the top surfaces of the bulges are obliquely arranged.

3. The post-injection molding ejector according to claim 1, wherein: the outer ends of the connecting plates (4) are fixedly connected with transmission blocks (6), and the bottoms of the transmission blocks (6) are fixedly provided with first air cylinders (7).

4. The post-injection molding ejector according to claim 1, wherein: the top of the limiting die holder (5) is fixedly provided with an inner die holder (51), the inside of the injection die (3) is respectively inserted with a product body (31), and the left side and the right side of the inside of the limiting die holder (5) and the inner die holder (51) are respectively provided with an ejection groove.

5. The post-injection molding ejector according to claim 1, wherein: the ejector rods (10) are inserted into ejector grooves on the left side and the right side of the inside of the limiting die holder (5) and the inside of the inner die holder (51), the top ends of the ejector rods (10) are flush with the top of the inner die holder (51), and the rod body of the ejector rods (10) is longer than the bottom of the die frame (1).

6. The post-injection molding ejector according to claim 5, wherein: the bottom ends of the ejection rods (10) are fixedly connected with a bottom plate (11), and a second air cylinder (12) is fixedly arranged in the middle of the bottom plate (11).