CN216465985U

CN216465985U - Novel mould ejection mechanism with higher speed

Info

Publication number: CN216465985U
Application number: CN202122740895.0U
Authority: CN
Inventors: 王科峰
Original assignee: Dongguan Chengde Plastic Hardware Mould Co ltd
Current assignee: Dongguan Chengde Plastic Hardware Mould Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-10
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a novel mold accelerated ejection mechanism which is arranged between a fixed mold and a movable mold of a plastic mold and comprises cams hinged on an ejector plate, wherein one end part of each cam is provided with a first bulge, and the other end part of each cam is provided with a second bulge; each second bulge is provided with an accelerating thimble extending along the demoulding direction; the moving die is provided with a push rod, and the push rod can be pressed on the first bulge to force the second bulge to move reversely so as to push the accelerating thimble to push a product on the moving die away from the die. The utility model has compact structure, small occupied space, simple structure of each component part and convenient processing and assembly; by arranging the cam on the ejector pin bottom plate and arranging the push rod and the accelerating rod between the movable die and the fixed die, the product can be quickly pushed away from the die by ingeniously utilizing the one-to-one action principle of the teeterboard, so that the automatic continuous production of the injection molding machine is realized, the production efficiency of the injection molding machine is improved, the labor is saved, and the production cost is reduced.

Description

Novel mould ejection mechanism with higher speed

Technical Field

The utility model relates to the technical field of plastic molds, in particular to a novel mold accelerated ejection mechanism.

Background

The ejection mechanism is a necessary mechanism on most plastic molds, and is mainly used for ejecting a product from the mold after molding. In the design of the die, the thimble needs to penetrate through the movable die assembly or the fixed die assembly and is connected with the transmission part to do reciprocating motion, the structure is generally complex, and the occupied space is large; in production, due to the restriction of various factors, the ejection mechanism often cannot completely push the product away from the mold, the product needs to be taken out by manual assistance, the labor cost is increased, the production efficiency of the injection molding machine is reduced, and certain potential safety hazards exist in manual operation.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, the present invention provides a novel mold ejection accelerating mechanism.

In order to solve the technical problems, the utility model adopts a technical scheme as follows:

novel mould ejection mechanism with higher speed installs between the cover half and the movable mould of plastic mould, wherein:

the thimble bottom plate is arranged on the fixed die and is in transmission connection with a driving device arranged on the fixed die, and the thimble bottom plate can move along the demoulding direction under the driving of the driving device; a plurality of cams are hinged on the ejector pin bottom plate, one end part of each cam is provided with a first bulge, the other end part of each cam is provided with a second bulge, and each cam can rotate relative to the ejector pin bottom plate under the driving of external force; each second protrusion is provided with an accelerating thimble extending along the demoulding direction;

the thimble panel is detachably and fixedly arranged on the thimble base plate, a plurality of first through holes and second through holes extending along the demolding direction are formed in the thimble panel, each first through hole is arranged above or in front of one first bulge, and each second through hole is arranged above or in front of one second bulge;

the movable die plate is arranged on the movable die, a plurality of push rods extending along the demolding direction are arranged on the movable die plate, each push rod penetrates through the movable die plate and extends to the position right above or in front of one first through hole, and each push rod can penetrate through one first through hole and can slide in the first through hole; the movable template is provided with a plurality of third through holes extending along the demolding direction, and each third through hole is arranged right above or right in front of one second through hole;

the movable mould core is arranged on the movable mould plate, and a plurality of products are formed on the movable mould core; more than one fourth through hole extending along the demolding direction is formed in the movable die core below each product, and each fourth through hole is formed right above or in front of one third through hole; each accelerating thimble sequentially penetrates through the second through hole and the third through hole and extends into the fourth through hole.

As a further elaboration of the above technical solution:

in the above technical scheme, each second through hole is a stepped hole, an elastic member is arranged in each stepped hole, and each elastic member is sleeved on one accelerating thimble.

In the above technical solution, each of the elastic members is a spring.

In the technical scheme, the bottom end surface of each cam is an arc surface or two intersected planes; each cam is provided with a rotating shaft.

In the above technical scheme, the upper end of the thimble bottom plate is provided with a plurality of first clamping grooves adapted to the cam, and two side walls of each first clamping groove are provided with second clamping grooves adapted to the rotating shaft.

In the above technical scheme, a limit block is further arranged between the fixed die and the movable die.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has compact structure, small occupied space, simple structure of each component part and convenient processing and assembly; by arranging the cam on the ejector pin base plate and arranging the push rod and the accelerating rod between the movable die and the fixed die, the product can be quickly pushed away from the die by ingeniously utilizing the action principle of the seesaw on one another, so that the automatic continuous production of the injection molding machine is realized, the production efficiency of the injection molding machine is improved, the labor is saved, and the production cost is reduced.

Drawings

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

FIG. 2 is a schematic structural diagram of the thimble base plate in the present embodiment;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is a schematic structural view of the cam in the present embodiment.

In the figure: 100. fixing a mold; 200. moving the mold; 300. producing a product; 400. a limiting block; 10. a thimble base plate; 20. a thimble panel; 30. moving the template; 40. a movable mould core; 1. a cam; 101. a first protrusion; 102. a second protrusion; 103. a rotating shaft; 2. an accelerating thimble; 3. a first through hole; 4. a second through hole; 5. a push rod; 6. a third through hole; 7. a fourth via hole; 8. an elastic member; 9. a first card slot; 11. and a second card slot.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-4, the novel mold accelerated ejection mechanism is installed between a fixed mold 100 and a movable mold 200 of a plastic mold, wherein:

the thimble bottom plate 10 is arranged on the fixed die 100 and is in transmission connection with a driving device arranged on the fixed die 100, and the thimble bottom plate 10 can move along the demoulding direction under the driving of the driving device; a plurality of cams 1 are hinged on the thimble base plate 10, one end part of each cam 1 is provided with a first bulge 101, the other end part of each cam 1 is provided with a second bulge 102, and each cam 1 can rotate relative to the thimble base plate 10 under the driving of external force; each second bulge 102 is provided with an accelerating thimble 2 extending along the demoulding direction;

the thimble panel 20 is detachably and fixedly arranged on the thimble base plate 10, and is provided with a plurality of first through holes 3 and second through holes 4 extending along the demoulding direction, each first through hole 3 is arranged above or in front of a first bulge 101, and each second through hole 4 is arranged above or in front of a second bulge 102;

the movable die plate 30 is arranged on the movable die 200, a plurality of push rods 5 extending along the demolding direction are arranged on the movable die plate, each push rod 5 penetrates through the movable die plate 30 and extends to the position right above or right in front of a first through hole 3, and each push rod 5 can penetrate through and slide in the first through hole 3; the movable template 30 is provided with a plurality of third through holes 6 extending along the demoulding direction, and each third through hole 6 is arranged right above or right in front of one second through hole 4;

a moving core 40 installed on the moving die plate 30, and a plurality of products 300 molded on the moving core 40; the movable die core 40 is provided with more than one fourth through hole 7 extending along the demoulding direction below each product 300, and each fourth through hole 7 is arranged right above or right in front of a third through hole 6; each accelerating thimble 2 sequentially passes through a second through hole 4 and a third through hole 6 and extends into a fourth through hole 7.

Specifically, each second through hole 4 is a stepped hole, an elastic member 8 is arranged in each stepped hole, and each elastic member 8 is sleeved on one accelerating ejector pin 2.

Specifically, each elastic member 8 is a spring.

Specifically, the bottom end surface of each cam 1 is an arc surface or two intersected planes; each cam 1 is provided with a rotating shaft 103.

Specifically, the upper end of the thimble base plate 10 is provided with a plurality of first slots 9 adapted to the cam 1, and two side walls of each first slot 9 are provided with second slots 11 adapted to the rotating shaft 103.

The utility model has compact structure, small occupied space, simple structure of each component part and convenient processing and assembly; the cam 1 is arranged on the thimble base plate 10, the push rod 5 and the accelerating rod 2 are arranged between the fixed die 100 and the movable die 200, the seesaw one-by-one action principle is ingeniously utilized, the product 300 can be quickly pushed away from the die, so that the automatic continuous production of the injection molding machine is realized, the production efficiency of the injection molding machine is improved, the labor is saved, and the production cost is reduced.

When the device is used, the actual structural characteristics of a die and a product can be combined, the 'fulcrum' position (namely the arc surface radian or the intersection line position of two planes) of the cam 1 is reasonably arranged, and the workpiece 300 can be quickly pushed away from the die by matching with the push rod 5 and the accelerating thimble 2 with proper lengths.

Specifically, a limiting block 400 is further arranged between the fixed die 100 and the movable die 200.

It can be understood that the limiting block 400 can leave a gap between the fixed mold 100 and the movable mold 200 when the two are closed, so as to reserve a space for the push rod 5 and the accelerating thimble 2, and avoid the influence on the closing of the mold and the molding of the product 300.

The working process of the utility model is as follows:

as shown in fig. 1, during mold splitting, the driving device drives the thimble base plate 10 to move towards the movable mold 200, the thimble base plate 10 drives the cam 1, the acceleration thimble 2 and the thimble panel 20 to move synchronously, and the elastic element 8 deforms under pressure; the push rod 5 is inserted into the first through hole 3 of the thimble panel 20 and slides along the same; the end part of the push rod 5 presses one end of the cam 1 and pushes the first bulge 101 to move downwards or retreat; the second protrusion 102 at the other end of the cam 1 tilts synchronously to push the accelerating ejector rod 2 to move upwards or move forwards, so as to jack up the product 300 on the movable mold core 40 and make the product separate from the movable mold core 40. After the process is finished, the driving device drives the thimble base plate 10 to be far away from the moving die 200, the elastic piece 8 simultaneously exerts a rebound force on the accelerating thimble 2 to push the accelerating thimble 2 to move reversely, the cam 1 is pressed in the first clamping groove 9, the end part of the accelerating thimble 2 is in principle a cavity of a product 300 formed on the moving die core 40, and meanwhile, the push rod 5 simultaneously exits from the first through hole 3.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. Novel mould ejection mechanism with higher speed, its characterized in that installs between the cover half and the movable mould of plastic mould, wherein:

the thimble bottom plate is arranged on the fixed die and is in transmission connection with a driving device arranged on the fixed die, and the thimble bottom plate can move along the demoulding direction under the driving of the driving device; a plurality of cams are hinged on the ejector pin base plate, one end part of each cam is provided with a first bulge, the other end part of each cam is provided with a second bulge, and each cam can rotate relative to the ejector pin base plate under the driving of external force; each second protrusion is provided with an accelerating thimble extending along the demoulding direction;

2. The novel mold accelerated ejection mechanism of claim 1, wherein each second through hole is a stepped hole, each stepped hole is provided with an elastic member, and each elastic member is sleeved on one of the accelerating pins.

3. A novel mold accelerated ejection mechanism as in claim 2, wherein each of the elastic members is a spring.

4. The novel mold accelerated ejection mechanism of claim 1, wherein the bottom end surface of each cam is an arc or two intersecting planes; each cam is provided with a rotating shaft.

5. The novel mold accelerated ejection mechanism as claimed in claim 4, wherein the top end of the ejector pin bottom plate is provided with a plurality of first slots adapted to the cam, and two side walls of each first slot are provided with second slots adapted to the rotation shaft.

6. The novel mold accelerated ejection mechanism as claimed in any one of claims 1 to 5, further comprising a limiting block between the fixed mold and the movable mold.