CN210733165U

CN210733165U - Injection mold back-off takes off structure by force

Info

Publication number: CN210733165U
Application number: CN201920977037.8U
Authority: CN
Inventors: 邱翌
Original assignee: Ningbo Lian Science And Technology Co Ltd
Current assignee: Ningbo Lian Science And Technology Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-06-12
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to the field of dies, in particular to an injection die back-off structure, which comprises a fixed plate and a die body, wherein the die body is embedded in the fixed plate, the die body is provided with a plurality of cavities, the bottom in each cavity is provided with a through hole for communicating the cavity with the other side of the die body, a columnar moving die is movably arranged in the through hole, the through hole comprises an upper part and a lower part, the aperture of the upper part of the through hole is smaller than that of the lower part, the outer cylinder wall of the moving die is attached to the inner wall of the upper part of the through hole, the lower end of the moving die is provided with an annular flange, the outer diameter of the annular flange is larger than that of the upper part of the through hole, the outer diameter of the annular flange is smaller than that of the lower part of the through hole, and a plurality of thimbles which upwards pass through the through hole are arranged around, the product is effectively protected from being damaged, and the yield is improved.

Description

Injection mold back-off takes off structure by force

Technical Field

The utility model relates to a mould field, concretely relates to injection mold back-off takes off structure by force.

Background

Moulds (Mule) are used for obtaining various moulds and tools of required products by injection moulding, blow moulding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".

In the process of demoulding products after mould opening of the existing mould, because some products have the shape of an inverted buckle structure, such as a ball sleeve structure, for the products, the traditional mould can cause product damage in the forced demoulding process, and therefore, a structure for forcibly demoulding the products is needed to be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold back-off takes off structure by force.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an injection mold back-off structure of taking off by force, including fixed plate and mould body, the mould body inlays and locates in the fixed plate, the mould body is equipped with a plurality of die cavity, bottom in every die cavity all is equipped with the through-hole that is used for intercommunication die cavity and mould body opposite side, the through-hole internalization is equipped with one and is cylindrical movable mould, the top of movable mould extends to the die cavity directly over, the through-hole has upper and lower two parts to constitute, wherein the first half aperture of through-hole is less than the aperture of the latter half, the outer cylinder wall of movable mould and the laminating of the first half inner wall of through-hole, the lower extreme of movable mould is equipped with an annular flange, the external diameter of annular flange is greater than the first half aperture of through-hole, the external diameter of annular flange is less than.

As an injection mold back-off takes off preferred scheme of structure by force, the upper end top of movable mould is equipped with and is used for fashioned spherical structure, and the outside of spherical structure evenly is equipped with a plurality of separation piece along the circumferencial direction of movable mould.

As a preferred scheme of an injection mold back-off forced-disengaging structure, the ejector pins around each through hole are uniformly distributed along the circumferential direction, and the ejector pins sequentially penetrate through the fixing plate and the mold body from bottom to top and extend into a cavity right above the fixing plate and the mold body.

As an injection mold back-off takes off preferred scheme of structure by force, the bottom of every movable mould all is equipped with a spring that is used for the jack-up movable mould, is equipped with the holding tank that a plurality of is used for holding the spring on the fixed plate.

As a preferable scheme of the injection mold back-off forced-off structure, the outer wall of each annular flange is provided with a flat-cut part for identifying the direction.

The utility model has the advantages that: after the mold opening is finished during injection molding, the movable mold is slightly jacked up under the action of the spring to assist the ejector pin to demold, the ejector pin jacks up a product in the cavity and pushes out a part of the cavity, the bottom of the product is in a spherical sleeve shape, so that a plurality of barrier sheets are arranged around the spherical structure of the movable mold top, an elastic gap is reserved on the spherical sleeve-shaped structure at the bottom after the product is molded, the product is conveniently and completely pulled out from the upper end of the movable mold, after the ejector pin jacks up the product for a certain distance, the spherical sleeve-shaped part at the bottom of the product is still wrapped on the spherical structure, the ejector pin continues to jack up the product, the movable mold moves upwards along with the product until the movable mold is limited at the middle position of the through hole through the annular flange at the lower end, at the moment, the movable mold cannot continuously lift up along with the product, so that the spherical sleeve-shaped structure, and (5) demolding is finished. The utility model discloses an injection mold back-off takes off structure by force, through the drawing of patterns mechanism of two segmentations, to having the in-process that the product of back-off structure carries out the drawing of patterns, the effectual product of having protected does not receive the damage, has improved the yields.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a first perspective sectional view of the present invention.

Fig. 2 is a perspective sectional view of the present invention.

Fig. 3 is a perspective sectional view of the die body.

Fig. 4 is an enlarged schematic view at a in fig. 1.

In the figure: the die comprises a fixed plate 1, a die body 2, a through hole 3, a movable die 4, an annular flange 5, a thimble 6, a spherical structure 7, a blocking sheet 8, a spring 9, a flattening part 10 and a product 11.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the injection mold reverse-buckling forced-releasing structure includes a fixing plate 1 and a mold body 2, the mold body 2 is embedded in the fixing plate 1, the die body 2 is provided with a plurality of die cavities, the bottom of each die cavity is provided with a through hole 3 for communicating the die cavity with the other side of the die body 2, a columnar moving die 4 is movably arranged in the through hole 3, the top end of the moving die 4 extends into the die cavity right above, the through hole 3 is composed of an upper part and a lower part, wherein the aperture of the upper half part of through-hole 3 is less than the aperture of the lower half part, the outer cylinder wall of movable mould 4 is laminated with the inner wall of the upper half part of through-hole 3, the lower extreme of movable mould 4 is equipped with an annular flange 5, the external diameter of annular flange 5 is greater than the aperture of the upper half part of through-hole 3, the external diameter of annular flange 5 is less than the aperture of the lower half part of through-hole 3, still be equipped with the thimble 6 that a plurality of upwards passed through-hole 3 around through-hole.

The top of the upper end of the movable mold 4 is provided with a spherical structure 7 for molding, and the outer side of the spherical structure 7 is uniformly provided with a plurality of barrier ribs 8 along the circumferential direction of the movable mold 4. In the process of demoulding after injection moulding, the ejector pin 6 ejects the product 11 in the cavity out of the cavity, and because the bottom of the product 11 is in a ball sleeve shape, a plurality of barrier sheets 8 are arranged around the spherical structure 7 at the top of the movable mould 4, so that an elastic gap is reserved on the ball sleeve-shaped structure at the bottom after the product 11 is moulded, and the product 11 can be pulled out from the upper end of the movable mould 4 completely.

The thimbles 6 around each through hole 3 are uniformly distributed along the circumferential direction, and the thimbles 6 sequentially penetrate through the fixing plate 1 and the die body 2 from bottom to top and extend into a die cavity right above. After the ejector pin 6 jacks up the product 11 for a certain distance, because the spherical sleeve-shaped part at the bottom of the product 11 is still wrapped on the spherical structure, the ejector pin 6 continues to jack up the product 11, the movable die 4 moves up along with the product 11 until the movable die 4 is limited at the middle position of the through hole 3 through the annular flange 5 at the lower end, and at the moment, the movable die 4 cannot continue to ascend along with the product 11, so that the spherical sleeve-shaped structure at the bottom of the product 11 is completely pulled out from the spherical structure at the top end of the movable die 4 under the action of the ejector pin 6, and demolding is completed.

The bottom of every movable mould 4 all is equipped with a spring 9 that is used for jack-up movable mould 4, is equipped with the holding tank that a plurality of is used for holding spring 9 on the fixed plate 1. After the injection molding is finished and the mold is opened, the movable mold 4 is slightly jacked upwards under the action of the spring 9, and the ejector pin 6 is assisted to perform demolding.

The outer wall of each annular flange 5 is provided with a chamfer 10 for identifying the direction.

The working principle is as follows: after the mold opening is finished during injection molding, the movable mold 4 is slightly jacked up under the action of the spring 9, the ejector pin 6 is used for demolding, the ejector pin 6 is used for ejecting a product 11 in the cavity upwards out of one part of the cavity, the bottom of the product 11 is in a ball sleeve shape, a plurality of barrier sheets 8 are arranged around the spherical structure 7 at the top of the movable mold 4, an elastic gap is reserved on the ball sleeve-shaped structure at the bottom after the product 11 is molded, the product 11 is conveniently and completely pulled out from the upper end of the movable mold 4, after the ejector pin 6 jacks up the product 11 for a certain distance, the ball sleeve-shaped part at the bottom of the product 11 is still wrapped on the spherical structure, so the ejector pin 6 continuously jacks up the product 11, the movable mold 4 moves upwards along with the product 11 until the movable mold 4 is limited at the middle position of the through hole 3 through the annular flange 5 at the lower end, at the moment, the movable mold 4 cannot continuously lift, the spherical sleeve-shaped structure at the bottom of the product 11 is completely pulled out from the spherical structure at the top end of the movable die 4, and the demoulding is finished.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The utility model provides an injection mold back-off structure of taking off by force, including fixed plate (1) and mould body (2), mould body (2) are inlayed in fixed plate (1), mould body (2) are equipped with a plurality of die cavity, a serial communication port, the bottom in every die cavity all is equipped with through-hole (3) that are used for communicating die cavity and mould body (2) opposite side, through-hole (3) internalization is equipped with a columnar movable mould (4), the top of movable mould (4) extends to the die cavity directly over, through-hole (3) have two parts constitution from top to bottom, wherein the first half aperture of through-hole (3) is less than the aperture of latter half, the outer cylinder wall of movable mould (4) and the first half inner wall laminating of through-hole (3), the lower extreme of movable mould (4) is equipped with an annular flange (5), the external diameter of annular flange (5) is greater than the first half aperture of through-hole (3), the external diameter of annular flange (5) is less, a plurality of thimbles (6) which upwards penetrate through the through holes (3) are arranged around the through holes (3).

2. An injection mold back-off forced-disengaging structure as claimed in claim 1, wherein the top of the upper end of the movable mold (4) is provided with a spherical structure (7) for molding, and the outer side of the spherical structure (7) is uniformly provided with a plurality of barrier ribs (8) along the circumferential direction of the movable mold (4).

3. An injection mold back-off forced-releasing structure as claimed in claim 1, wherein the ejector pins (6) around each through hole (3) are uniformly distributed along the circumferential direction, and the ejector pins (6) sequentially penetrate through the fixing plate (1) and the mold body (2) from bottom to top and extend into the cavity right above.

4. An injection mold undercut forced-release structure as claimed in claim 1, wherein the bottom of each movable mold (4) is provided with a spring (9) for jacking up the movable mold (4), and the fixed plate (1) is provided with a plurality of receiving grooves for receiving the springs (9).

5. An injection mold undercut forced-release structure according to claim 1, wherein each annular flange (5) is provided on its outer wall with a flattened portion (10) for direction identification.