CN108527743B

CN108527743B - Vacuum cover assembly of polymer forming processing machine

Info

Publication number: CN108527743B
Application number: CN201710123064.4A
Authority: CN
Inventors: 陈法胜
Original assignee: King Steel Machinery Co Ltd
Current assignee: King Steel Machinery Co Ltd
Priority date: 2017-03-03
Filing date: 2017-03-03
Publication date: 2020-07-03
Anticipated expiration: 2037-03-03
Also published as: CN108527743A

Abstract

The invention provides a vacuum cover component of polymer molding processing machinery, which is used between a cover piece for providing an independent inner space isolated from the atmosphere and a discharge piece for outputting polymer raw materials, a discharge member for outputting the polymer material in a molten state from the outside is extended into the space inside the cover member through a passage formed by the intersection of the first through hole on the cover member, the second through hole on the intermediate member and the third through hole on the end member, so as to perform a processing procedure of casting or injecting, the intermediate element can ensure the air tightness between the channel and the external atmosphere, and can select the communication position of the third through hole within the range of the enlarged through holes by increasing the hole ranges of the first through hole and the second through hole, so as to meet the requirement of industrial implementation by changing the feeding position of the die in the inner space of the cover piece.

Description

Vacuum cover assembly of polymer forming processing machine

Technical Field

The invention relates to a polymer molding processing technology, in particular to a vacuum cover assembly of a polymer molding processing machine.

Background

In the technical field of polymer molding, in order to avoid the influence of residual air inside the mold on the polymer material inside the mold at high temperature, when the polymer material is poured or injected into the mold cavity space of the mold, it is necessary to ensure that the air in the mold cavity space is properly extracted, and in order to achieve the purpose, in the prior art, after the mold is closed and a complete mold cavity space is formed, the air in the mold cavity space is extracted through an extraction hole preset on the mold, and the mold is also located in a vacuum environment, so that the mold has no residual air in the formed mold cavity space due to the existence of air deficiency during mold closing, and these techniques are common technical contents in the technical field of polymer molding.

The specific example of the known technology for evacuating the outside of a mold in a vacuum environment is as disclosed in the chinese M316793 new patent application, which uses a cover to isolate the outside atmosphere to form an independent space and can use a relatively low energy source to evacuate the air inside the space to form a vacuum environment, and meanwhile, the new patent application further provides a vacuum state for ensuring the space where the mold is located, so that a cylinder part located in the atmosphere can inject a polymer material into the mold, thereby avoiding the air from mixing into the space of a mold chamber no matter the cylinder part is cast in a mold opening state or injected in a mold closing state, so as to ensure the quality of a molded product.

However, because of the wide variety of polymer molded products, the required mold shape, configuration or size of the molded product are also changed, and the combination structure disclosed in the prior patent only allows the extruding cylinder to extend into the inner space of the cover body from a single specific position of the cover body, so that the position of the material injection hole of the mold must be matched with the specific position, and the extruding cylinder can inject the polymer raw material into the mold chamber space inside the mold through the material injection hole, which is not ideal in industrial utilization.

Disclosure of Invention

Therefore, the main objective of the present invention is to provide a vacuum cap assembly for polymer molding machine, which can be used with different molds to accurately communicate the extruding cylinder for outputting the polymer molten material with the feeding space of the mold, so as to smoothly perform the material pouring or injecting operation.

In order to achieve the purpose, the invention adopts the following technical scheme:

a vacuum cover assembly for high-molecular shaping machine features that a vacuum cover is arranged between a cover part for providing an independent internal space isolated from atmosphere and a discharge part for delivering high-molecular raw material, a discharge member for outputting the polymer material in a molten state from the outside is extended into the internal space of the cover member through a passage formed by the intersection of the first through hole on the cover member, the second through hole on the intermediate member and the third through hole on the end member, so as to perform a processing procedure of casting or injecting, the intermediate element can ensure the air tightness between the channel and the external atmosphere, and can make the third through hole select a communication position in the range of the enlarged through holes by increasing the hole ranges of the first through hole and the second through hole, so as to meet the requirement of industrial implementation by changing the feeding position of the die in the inner space of the cover piece.

In terms of technical content, the vacuum cover assembly of the polymer molding processing machine comprises:

the cover piece is provided with a ring wall, an inner space is positioned in the ring wall, and a first through hole penetrates through one side wall body of the ring wall and is communicated with the inner space; an intermediary element having a body with a first side surface airtightly attached to the annular wall, a second through hole penetrating the body from the first side surface and communicating with the first through hole; an end piece driven by external force to move between a sticking position and a separating position, having an end body with a side end face opposite to a second side face of the body opposite to the first side face, a third through hole passing through the end body, when the end piece is at the sticking position, the end body is airtightly stuck with the second side face by a side end face, and the third through hole is communicated with the second through hole, but when the end piece is at the separating position, the third through hole is far away from the medium element along with the end body.

Wherein, the maximum aperture of the first through hole and the second through hole are respectively larger than the maximum aperture of the third through hole.

Furthermore, the larger inner diameters of the first through hole and the second through hole enlarge the range of the position where the discharge member for supplying the external polymer material can extend into the inner space of the cover member, and further change the relative position where the body and the annular wall are attached to each other to change the intersection communication state between the first through hole and the second through hole, so that the intermediate element and the end member have smaller volume, and the communication position between the holes in a larger range can be changed, thereby simplifying the structure.

Specifically, the first through hole and the second through hole are respectively long in shape to provide a larger adjustment range, and the third through hole can be circular or other hole shapes suitable for being connected in series with a discharge piece of an external polymer raw material supply technology.

In order to facilitate the adhesion among the intermediate element, the end piece and the cover piece and reduce the volume, the body and the end body are respectively in a plate shape and are mutually adhered by a side plate surface.

In addition, in order to ensure the close contact between the end piece and the adjusting piece, the vacuum cover component of the polymer molding processing machine also comprises a combining piece for combining with an external extruding cylinder piece; the connector has a plurality of support rods, one end of each support rod is fixedly connected with the end body, a seat body is slidably arranged on the rod body of each support rod, and a plurality of first elastic bodies are respectively arranged between the seat body and the end body.

Furthermore, the connecting member further comprises two extending bodies symmetrically extending outwards from two sides of the seat body, two second elastic bodies respectively arranged between the extending ends of the two extending bodies and the end piece, and two positioning bolts respectively arranged at the extending ends of the extending bodies and respectively positioning the two second elastic bodies.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a preferred embodiment of the present invention.

Fig. 3 is a side view of a preferred embodiment of the present invention.

FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention taken along line 4-4 of FIG. 3.

Fig. 5 is a cross-sectional view of a preferred embodiment of the present invention taken along line 5-5 of fig. 3.

FIG. 6 is a cross-sectional view taken along line a-a of FIG. 3 showing a state where an outer barrel member is retracted in accordance with a preferred embodiment of the present invention.

FIG. 7 is a cross-sectional view taken along section line a-a of FIG. 3 showing an extended state of an external barrel member in accordance with a preferred embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view of a preferred embodiment of the present invention showing the resulting mold bottom-most shot position.

FIG. 9 is a schematic cross-sectional view of a preferred embodiment of the present invention showing the resulting mold top-fill position.

Detailed Description

Referring to fig. 1 to 5, a vacuum cover assembly 10 of a polymer molding machine according to a preferred embodiment of the present invention mainly includes a cover member 20, an intermediate member 30, an end member 40 and a coupling member 50, wherein:

the cover member 20 has a square tubular ring wall 21, the two ends of the tubular shaft are hollow, an inner space 22 is formed by the tube hole space of the ring wall 21, a first through hole 23 is a rectangular long hole with two arc-shaped ends of the long shaft, and is arranged between the inner wall surface and the outer wall surface of the wall body on one side of the ring wall 21 to communicate the inner space 22 with the outside of the ring wall 21, and the long shaft of the rectangular long hole is parallel to the tubular shaft of the ring wall 21.

The intermediate member 30 has a body 31, which is a plate-shaped body with a proper thickness, and is detachably attached to the outer wall surface of the annular wall 21 with one side plate surface airtight by a connecting member such as a bolt, and has one end protruding beyond one end of the tubular shaft of the annular wall 21, a second through hole 32, which has a shape similar to the inner diameter of the first through hole 23, is formed through the body of the body 31, and is communicated with the inner space 22 through the first through hole 23, and has a long axis of a rectangular long hole shape parallel to the tubular shaft of the annular wall 21.

The end piece 40 has an end body 41 which is a plate-shaped body with a suitable thickness, and a third through hole 42 which is a circular hole with an inner diameter smaller than the first through hole 23 and the second through hole 32 is formed through the plate body at the central portion of the end body 41.

The connecting member 50 has a plurality of support rods 51, one end of each support rod 51 is vertically fixed on one side of the end body 41 and uniformly distributed around the third through hole 42, a block-shaped seat body 52 is slidably connected to the other end of the support rods 51, a plurality of first elastic bodies 53, which are springs, are respectively sleeved on the support rods 51, and both ends of each support rod are abutted against the end body 41 and the seat body 52, two rod-shaped extending bodies 54 symmetrically extend from both sides of the seat body 52 to the outside for a proper length and are slidably displaced with the seat body 52 relative to the support rods 51, two second elastic bodies 55, which are springs, are respectively arranged between the extending ends of the two extending bodies 54 and the end body 41, and two positioning bolts 56, which are shorter than the support rods 51, are respectively arranged on the extending ends of the two extending bodies 54 and are inserted into the two second elastic bodies 55 to position the two second elastic bodies 55.

In the industrial application of the vacuum hood assembly 10 of polymer molding machine, the hood 20 is installed in a known mold clamping device, and the hollow parts at the two tubular ends of the annular wall 21 are closed by the known mold clamping device to seal the internal space 22, so that the molding mold (not shown in the figure) in the internal space 22 is isolated from the atmosphere.

The seat 52 is used to couple with an external barrel, so that the coupling member 50 and the end piece 40 can be driven by an external discharging member, specifically, the external discharging member can be an injection molding machine or other known technologies, and only a part of the embodiment is disclosed in the drawings, and the cylindrical injection nozzle 60 is partially shown by a dotted line.

Through the above components, the vacuum cover assembly 10 of the polymer molding machine is used by moving the coupling member 50 and the end member 40 through the base of the injection molding machine, as shown in fig. 6, from a separating position away from the intermediate element 40 to an attaching position, such that the end body 41 is attached to the other side of the main body 31 opposite to the other side of the coupling member 50, and the third through hole 42 is communicated with the second through hole 32, such that the end member 50 is attached to the other side of the intermediate element 40, and as the base moving continues, as shown in fig. 7, only the base 52 and the extension 54 can move continuously, and slide relative to the plurality of support rods 51, and simultaneously compress the first elastic body 53 and the second elastic body 55, so as to indirectly apply an external force to the end member 40 through the first elastic body 53 and the second elastic body 55, thereby forcing the close contact between the end member 40 and the intermediate member 30 to a gas-tight condition to ensure that the interior space 22 is isolated from the atmosphere.

To further ensure the airtight connection between the two sides of the intermediate element 30 and the ring wall 21 and the end piece 40, grooves and gaskets (not shown) may be recessed on the two side surfaces of the intermediate element 30 to ensure the airtight connection between the two elements.

Furthermore, the long hole shape of the first through hole 23 and the second through hole 32 allows the third through hole 42 and the connected material injection nozzle to be moved between a lowest position as shown in fig. 8 and a highest position as shown in fig. 9, so as to correspond to the change of the feeding positions of different molds.

The intermediate element 30 is used as an indirect coupling technique between the end piece 40 and the annular wall 21, and further, the relative coupling position between the intermediate element 30 and the annular wall 21 can be changed in response to the feeding position of the mold in the inner space 22, so that the vacuum cover assembly 10 of the polymer molding machine can be changed in response to the feeding position of the mold compared to the prior art.

The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solution of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The vacuum cover component of the polymer molding processing machine is characterized by comprising:

the cover piece is provided with a ring wall, an inner space is positioned in the ring wall, and a first through hole penetrates through one side wall body of the ring wall and is communicated with the inner space;

an intermediary element having a body with a first side surface airtightly attached to the annular wall, a second through hole penetrating the body from the first side surface and communicating with the first through hole;

an end piece driven by external force to move between a sticking position and a separating position, having an end body with one side end face corresponding to a second side face of the body opposite to the first side face, a third through hole penetrating the end body, when the end piece is positioned at the sticking position, the end body is airtightly stuck with the second side face by one side end face, and the third through hole is communicated with the second through hole, but when the end piece is positioned at the separating position, the third through hole is far away from the medium element along with the end body;

the third perforations have a maximum pore size less than the maximum pore size of the first perforations;

the third perforations have a maximum pore size that is less than the maximum pore size of the second perforations.

2. The vacuum housing assembly of polymer molding processing machine as claimed in claim 1, wherein said first through hole or said second through hole is elongated.

3. The vacuum housing assembly of polymer molding processing machine as claimed in claim 1, wherein said third through hole is circular.

4. The vacuum cover assembly for polymer molding processing machine according to claim 1, wherein said end body has a plate shape.

5. The vacuum housing assembly of polymer molding processing machine as claimed in claim 1, wherein an end of said body corresponding to the axial direction of the center of curvature of said annular wall protrudes outside said annular wall.

6. The vacuum housing assembly of polymer molding processing machine as claimed in claim 1, further comprising a coupling member; the connector comprises a plurality of support rods, a seat body and a plurality of first elastic bodies, wherein one end of each support rod is fixedly connected to the end body through a rod shaft, the seat body is arranged on the rod bodies of the support rods in a sliding mode, and the first elastic bodies are arranged between the seat body and the end body.

7. The vacuum cover assembly for polymer molding processing machine according to claim 6, wherein said base body has a plate shape.

8. The vacuum cap assembly of polymer molding processing machinery as claimed in claim 6, wherein the coupling member further comprises two extending bodies symmetrically extending outward from both sides of the base body, two second elastic bodies respectively interposed between the extending ends of the two extending bodies and the end piece, and two positioning pins respectively provided at the extending ends of the two extending bodies and respectively positioning the two second elastic bodies.