CN-122008505-A - Injection mold of waste plastic processing connector convenient to drawing of patterns

CN122008505ACN 122008505 ACN122008505 ACN 122008505ACN-122008505-A

Abstract

The invention relates to an injection mold, in particular to an injection mold of a waste plastic processing connector convenient for demolding, which comprises a fixed frame, a bottom mold, an outer part Zhou Moju, a top mold, an inner part Zhou Moju, a top mold, a bottom mold, an inner peripheral mold and an outer peripheral mold which are mutually matched to form a mold cavity, wherein an expanding piece, a lifting piece and a telescopic piece are arranged on the fixed frame, after injection molding is completed and cooling is carried out, the expanding piece can drive a plurality of groups of outer parts Zhou Moju to slide in a first sliding groove to be far away from the inner part Zhou Moju so as to expand a radial gap between the outer peripheral mold and the inner peripheral mold, thereby separating the outer peripheral mold from a product, and after the outer part is far away from a set position, the lifting piece can drive the outer peripheral mold to be far away from the top mold in the vertical direction, and the telescopic piece can drive the inner part Zhou Moju to slide on a fixed rod to be far away from the top mold, so that each component part of the mold cavity is separated from a molded product step by step, and the adhesion risk of the product in the demolding process is effectively reduced.

Inventors

LIU YANBIN
WANG QIANCHENG

Assignees

昆山鼎庆精密模具有限公司

Dates

Publication Date: 20260512
Application Date: 20260409

Claims (10)

1. An injection mold of a waste plastic processing connector convenient for demolding comprises a fixed frame; The die is characterized by further comprising a bottom die fixedly arranged on the fixed frame, wherein a plurality of groups of first sliding grooves are formed in the bottom die, a plurality of groups of peripheral dies which can be in sliding fit with the first sliding grooves are arranged on the bottom die, a top die is in sliding fit with the fixed frame, a fixed rod is fixedly arranged on the fixed frame, and an inner Zhou Moju is in sliding fit with the fixed rod; The top die, the bottom die, the inner peripheral die and a plurality of groups of outer peripheral dies are mutually matched to form a die cavity of the forming connector; The fixed frame is provided with an expansion piece, a lifting piece and a telescopic piece which are matched with each other; After injection molding is completed and cooled, the expanding piece can drive a plurality of groups of outer Zhou Moju to slide in the first sliding groove to be far away from the inner Zhou Moju so as to enlarge a radial gap between the outer peripheral die and the inner peripheral die, thereby separating the outer peripheral die from a product, the lifting piece can drive the outer peripheral die to be far away from the top die in the vertical direction after the outer peripheral die is far away from a set position, and the expanding piece can drive the inner Zhou Moju to slide on the fixed rod to be far away from the top die so as to separate the inner peripheral die from the product.
2. The injection mold of the waste plastic processing connector convenient to demolding according to claim 1 is characterized in that a rotating sleeve sleeved with the fixing rod is rotatably installed on the fixing frame, a worm wheel is fixedly installed on the rotating sleeve, a worm meshed with the worm wheel is rotatably installed on the fixing frame and connected with a driving module, and the rotating sleeve is connected with the expanding piece, the lifting piece and the telescopic piece.
3. The injection mold of the plastic waste processing connector convenient to demolding according to claim 2, wherein the expansion piece comprises a lifting ring sleeved with the rotating sleeve, a connecting rod rotationally connected with the peripheral mold is rotationally arranged on the lifting ring, a second protruding column is fixedly arranged on the lifting ring, and a groove group which is slidingly embedded with the second protruding column is arranged on the rotating sleeve.
4. An injection mold for a plastic waste processing connector as defined in claim 3, wherein said groove set includes a second helical groove and a transverse groove in communication with each other, wherein said lifting ring is axially movable along said rotatable sleeve when said second projecting stud is slidably engaged with said second helical groove, and wherein said lifting ring is unchanged in position when said second projecting stud is slidably engaged with said transverse groove.
5. The injection mold for the waste plastic processing connector convenient to demolding according to claim 4 is characterized in that the lifting piece comprises a lifting frame, the lifting frame and the bottom mold can be in interference fit, a second sliding groove aligned with the first sliding groove is formed in the lifting frame, a first baffle plate and a second baffle plate are fixedly installed on the lifting frame, a lifting plate is sleeved on the rotating sleeve and located between the first baffle plate and the second baffle plate, a third protruding column is fixedly installed on the lifting plate, a third spiral groove which is in sliding fit with the third protruding column is formed in the rotating sleeve, the lifting piece drives the peripheral mold to be far away from the stroke end of the top mold in the vertical direction, and the height of one end, connected with the peripheral mold, of the connecting rod is larger than that of one end, connected with the lifting ring.
6. The injection mold for the waste plastic processing connector convenient to demold according to claim 5, wherein the lifting piece further comprises a plurality of groups of telescopic sleeves fixedly installed on the lifting plate, a plurality of groups of telescopic columns which are in sliding fit with the telescopic sleeves are fixedly installed on the first baffle plate, a tight abutting spring is arranged in the telescopic sleeves, two ends of the tight abutting spring respectively abut against the telescopic columns and the lifting plate, when the lifting plate abuts against the second baffle plate, the second protruding columns are located in the transverse grooves, and when the plurality of groups of peripheral molds are close to each other, the tight abutting spring is in a fully compressed state.
7. The injection mold of the plastic waste processing connector convenient to demolding according to claim 2, wherein the telescopic piece comprises a first protruding column fixedly installed on the rotating sleeve, and the inner circumference mold is provided with a first spiral groove which is in sliding fit with the first protruding column.
8. The injection mold for the plastic waste processing connector convenient to demold according to claim 7, wherein a sliding wedge block which is in interference fit with the inner Zhou Moju is slidably mounted on the fixed frame, a fixed wedge block which is in extrusion fit with the sliding wedge block is fixedly mounted on the top mold, a reset spring is arranged in the fixed frame, and two ends of the reset spring are respectively in interference fit with the fixed frame and the top mold.
9. The injection mold of claim 8, wherein one side of the peripheral mold is fixedly provided with a protrusion, and the other side thereof is provided with a groove, and when a plurality of sets of peripheral molds are matched, the protrusion on one peripheral mold is matched with the groove on the adjacent peripheral mold.
10. The injection mold of the plastic waste processing connector convenient to demolding according to claim 1, wherein a sealing bulge loop is fixedly installed on the top mold and is used for being in interference fit with the outer part Zhou Moju, and when the inner peripheral mold is matched with the sliding wedge block, the outer peripheral mold is positioned between the sealing bulge loop and the inner part Zhou Moju and is in contact with the sealing bulge loop, and one surface, close to the inner peripheral mold, of the sealing bulge loop is obliquely arranged.

Description

Injection mold of waste plastic processing connector convenient to drawing of patterns Technical Field The invention relates to an injection mold, in particular to an injection mold of a waste plastic processing connector convenient for demolding. Background In the field of recycling waste plastics, injection molding is an important process for processing connector-type products. In the injection molding process, molten plastic fills the mold cavity under high pressure, and is closely attached to each molding surface of the mold after cooling and solidification. Because the plastic material can shrink in volume in the cooling process, a negative pressure adsorption effect is easy to form on the inner wall of the cavity, and part of plastic has certain adhesion tendency, and the product often has stronger adhesion effect with the surface of the die during demolding. The common mold mostly adopts an integral or separable mold, the integral mold comprises a cavity formed by a single mold body, such as a top mold, a bottom mold and an inner mold, and the integral mold has the advantages of simple structure and low manufacturing cost, and the separable mold comprises a plurality of mold bodies capable of relatively moving, such as a top mold, a bottom mold, an inner peripheral mold, an outer peripheral mold and the like, and each mold body surrounds the synthesized cavity when the mold bodies are closed. The demolding process is to depend on a thimble or a push plate to eject the product out of the mold cavity integrally, so that the product and each surface of the mold cavity are easy to form strong adhesion, the vacuum adsorption between the product and the mold cavity cannot be effectively eliminated, and the problem caused by adhesion, such as product clamping, surface scratch, inner peripheral structure deformation and the like, is still commonly caused in actual production due to the lack of differential demolding control for different parts. Disclosure of Invention The invention aims to provide an injection mold of a waste plastic processing connector, which is convenient for demolding, so as to solve the problems in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: an injection mold of a waste plastic processing connector convenient for demolding comprises a fixed frame; The die comprises a fixed frame, a bottom die, a plurality of groups of peripheral dies, a top die, a fixed rod, an inner Zhou Moju and a plurality of groups of first sliding grooves, wherein the fixed frame is fixedly arranged on the bottom die; The top die, the bottom die, the inner peripheral die and a plurality of groups of outer peripheral dies are mutually matched to form a die cavity of the forming connector; The fixed frame is provided with an expansion piece, a lifting piece and a telescopic piece which are matched with each other; After injection molding is completed and cooled, the expanding piece can drive a plurality of groups of outer Zhou Moju to slide in the first sliding groove to be far away from the inner Zhou Moju so as to enlarge a radial gap between the outer peripheral die and the inner peripheral die, thereby separating the outer peripheral die from a product, the lifting piece can drive the outer peripheral die to be far away from the top die in the vertical direction after the outer peripheral die is far away from a set position, and the expanding piece can drive the inner Zhou Moju to slide on the fixed rod to be far away from the top die so as to separate the inner peripheral die from the product. The injection mold of the waste plastic processing connector convenient to demould comprises the fixed frame, the rotating sleeve sleeved with the fixed rod is rotatably arranged on the fixed frame, the worm wheel is fixedly arranged on the rotating sleeve, the worm meshed with the worm wheel is rotatably arranged on the fixed frame and connected with the driving module, and the rotating sleeve is connected with the expanding piece, the lifting piece and the telescopic piece. The injection mold for the waste plastic processing connector convenient to demolding comprises the expansion piece, wherein the expansion piece comprises the lifting ring sleeved with the rotating sleeve, the lifting ring is rotatably provided with the connecting rod rotatably connected with the peripheral mold, the lifting ring is fixedly provided with the second protruding column, and the rotating sleeve is provided with the groove group which is in sliding fit with the second protruding column. The injection mold of the waste plastic processing connector convenient to demolding comprises the groove group, wherein the groove group comprises a second spiral groove and a transverse groove which are communicated with each other, the lifting ring can axially move along the rotating sleeve when the second protruding column is in sliding fit with the second spiral groove, an