CN211868484U

CN211868484U - Burr-free rubber mold

Info

Publication number: CN211868484U
Application number: CN202020112791.8U
Authority: CN
Inventors: 张旭
Original assignee: Tianjin Qisu Technology Co ltd
Current assignee: Tianjin Qisu Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-11-06
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a unhairing limit rubber mold, including cope match-plate pattern, locating pin and thread groove, the below of cope match-plate pattern is provided with middle template, one side that middle template kept away from the cope match-plate pattern is provided with the lower bolster, wherein, the inside central authorities department of cope match-plate pattern is provided with the mould mold insert, the mould insert in the inside being provided with of middle template, the locating pin through connection is in the four corners department of cope match-plate pattern, middle template and lower bolster, the edge at mould mold insert top is seted up to the thread groove. This unhairing limit rubber mold, at the in-process of moulding plastics, because the distance of moulding plastics inslot side surface to keeping away the dead slot edge equals the distance of moulding plastics groove outside surface to last mould mold insert bottom edge for the rubber materials that the groove edge junction that moulds plastics spills over breaks away from the dead slot respectively from the gap of going up mould mold insert and well mould mold insert and the gap between well mould insert and the lower mould mold insert, thereby appears deckle edge when effectively avoiding rubber production.

Description

Burr-free rubber mold

Technical Field

The utility model relates to a rubber mold technical field specifically is a unhairing limit rubber mold.

Background

Because the special physical properties of rubber materials, it is very high to the shaping of rubber product mould to mould precision requirement, if the die joint cooperation is not good, minimum clearance all can produce deckle edge. At present, the method for processing the burrs of the rubber product in the industry is to remove the burrs on the mold by manual trimming or hand tearing, so that a large amount of manpower is consumed, the production efficiency is very low, and the quality is uncontrollable due to manual burr repairing. At present prune deckle edge through the frock, because rubber is softer, the deckle edge is difficult for the excision, still need manual processing, and simultaneously, rubber has certain pungent smell, to the human body or cause certain injury, for realizing rubber product automated production and humanized production, for this reason, we improve rubber mold's work efficiency through the innovation to rubber mold, produce deckle edge when effectively avoiding rubber production, improve the availability factor, make it to give play to the biggest value, along with the development of science and technology, unedged rubber mold has had the development of very big degree, its development has brought very big facility for people when carrying out deckle edge to rubber production and getting rid of, its kind and quantity are also increasing day by day.

Although the types and the number of the burr-free rubber molds on the market are very large, the burr-free rubber molds have the following disadvantages: the rubber mold has the defects that the injection molding raw materials are not uniform when the rubber mold is used for processing a rubber product, and burrs are easily generated when the rubber mold is used for processing the rubber product, and the inside of the mold is not convenient to clean in time after the rubber mold is used for producing the rubber product. Therefore, the existing burr-free rubber mold is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a unhairing limit rubber mold to solve the rubber mold on the existing market that the above-mentioned background art provided and add man-hour to the rubber product and have that the raw materials of moulding plastics is inhomogeneous, rubber mold adds man-hour to the rubber product and produces the problem that the mould is inside in time to clear up not convenient for carry on behind deckle edge and the rubber mold production rubber product easily.

In order to achieve the above object, the utility model provides a following technical scheme: a burr-free rubber mold comprises an upper mold plate, a positioning pin and a thread groove, wherein a middle mold plate is arranged below the upper mold plate, a lower mold plate is arranged on one side of the middle mold plate far away from the upper mold plate, wherein,

an upper die insert is arranged at the center of the inner part of the upper die plate, a middle die insert is arranged in the middle die plate, a lower die insert is fixed in the lower die plate, the positioning pins penetrate through the four corners of the upper die plate, the middle die plate and the lower die plate, and the adjacent positions of the positioning pins are connected with fixing bolts;

the mould comprises an upper mould insert and a lower mould insert, and is characterized in that a runner hole is formed in the upper mould insert, a rubber pre-forming material is arranged above the runner hole, an injection molding groove is formed between the middle mould insert and the lower mould insert in a matched mode, a clearance groove is formed in the top of the lower mould insert, and a thread groove is formed in the edge of the top of the upper mould insert.

Preferably, the cross-sectional dimension of the outer side of the upper mold insert is matched with the cross-sectional dimension of the inner part of the upper mold plate, the cross-sectional shape of the upper mold insert is circular, the thickness of the upper mold insert is larger than that of the upper mold plate, and the upper mold insert and the upper mold plate are in clamping connection.

Preferably, six flow passage holes are formed, the circle center connecting lines among the six flow passage holes are in a regular hexagon shape, the distances from the circle centers of the six flow passage holes to the circle center of the upper mold insert are equal, and the axis line of the flow passage hole is located in the middle of the injection molding groove.

Preferably, the injection groove is annular, and the cross-sectional shape of the injection groove is rectangular.

Preferably, the clearance groove is located at the center of the top of the lower mold insert, the clearance groove is concave, and the distance from the clearance groove to the inner edge of the injection groove is equal to the distance from the outer edge of the injection groove to the bottom edge of the upper mold insert.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) when the unhardened rubber mold is used for rubber injection molding, the rubber pre-molding material is heated and injected into the flow channel hole, and the flow channel hole is positioned in the middle of the injection molding groove, so that rubber raw materials can be conveniently and uniformly injected into the injection molding groove through the six flow channel holes distributed at equal included angles;

(2) in the injection molding process of the unhairing rubber mold, as the distance from the inner side surface of the injection molding groove to the edge of the clearance groove is equal to the distance from the outer side surface of the injection molding groove to the edge of the bottom of the upper mold insert, the rubber raw materials overflowing from the connection part of the edge of the injection molding groove are respectively separated from the clearance groove, the gap between the upper mold insert and the middle mold insert and the gap between the middle mold insert and the lower mold insert, thereby effectively avoiding the unhairing during rubber production;

(3) this unedged rubber mold, after rubber product processing accomplished, through the thread groove and the supporting screw rod butt joint of last mould mold insert top edge, can take out the mould insert from the cope match-plate pattern through corresponding lifting means to the completion takes out rubber product, and the convenient inside residual raw materials of rubber of in time clearing up this mould.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the burr-free rubber mold of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the rubber mold without burr of the present invention;

fig. 3 is the enlarged schematic structure of a part in fig. 2 of the unhanged rubber mold of the present invention.

In the figure: 1. mounting a template; 2. an intermediate template; 3. a lower template; 4. an upper die insert; 5. a middle mold insert; 6. a lower die insert; 7. positioning pins; 8. fixing the bolt; 9. a flow passage hole; 10. a rubber preform; 11. injection molding a groove; 12. an empty avoiding groove; 13. a thread groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a burr-free rubber mold comprises an upper mold plate 1, a middle mold plate 2, a lower mold plate 3, an upper mold insert 4, a middle mold insert 5, a lower mold insert 6, a positioning pin 7, a fixing bolt 8, a runner hole 9, a rubber pre-forming material 10, an injection molding groove 11, a clearance groove 12 and a thread groove 13, wherein the middle mold plate 2 is arranged below the upper mold plate 1, the lower mold plate 3 is arranged on one side of the middle mold plate 2 far away from the upper mold plate 1, wherein,

an upper die insert 4 is arranged at the center of the inner part of the upper die plate 1, the outside section size of the upper die insert 4 is matched with the inside section size of the upper die plate 1, the section shape of the upper die insert 4 is circular, the thickness of the upper die insert 4 is larger than that of the upper die plate 1, the upper die insert 4 is connected with the upper die plate 1 in a clamping manner, the outside section size of the upper die insert 4 is matched with that of the inside section size of the upper die plate 1, the connection tightness between the upper die insert 4 and the upper die plate 1 can be ensured, a middle die insert 5 is arranged inside the middle die plate 2, a lower die insert 6 is fixed inside the lower die plate 3, positioning pins 7 penetrate through the four corners of the upper die plate 1, the middle die plate 2 and the lower die plate 3, and fixing bolts 8 are connected to the adjacent positions of;

the inner part of the upper mold insert 4 is provided with six flow passage holes 9, the circle center connecting lines among the six flow passage holes 9 are in a regular hexagon shape, the distances from the circle centers of the six flow passage holes 9 to the circle center of the upper mold insert 4 are equal, the axis of the flow passage hole 9 is positioned in the middle position of the injection molding groove 11, so that rubber raw materials can uniformly flow in the injection molding groove 11, a rubber pre-forming material 10 is arranged above the flow passage hole 9, the middle mold insert 5 and the lower mold insert 6 are matched to form the injection molding groove 11, the injection molding groove 11 is in a circular ring shape, the cross section of the injection molding groove 11 is rectangular, the injection molding groove 11 is in a circular ring shape, and liquid rubber raw materials can conveniently circulate in the injection molding groove 11, keep away dead slot 12 has been seted up at lower mould mold insert 6's top, keep away dead slot 12 and be in the central point at lower mould mold insert 6 top and put, and keep away the shape of dead slot 12 and be "concave" form to keep away the distance that dead slot 12 equals to mould plastics the distance between 11 outward flanges of groove and the last mold insert 4 bottom edge of moulding plastics, set up and keep away the distance that dead slot 12 equals to mould plastics the distance between 11 outward flanges of groove and the last mold insert 4 bottom edge of moulding plastics, can avoid moulding plastics groove 11 and produce the rubber deckle edge in the both sides junction of keeping away dead slot 12 and last mold insert 4, thread groove 13 sets up in the edge at last mold insert 4 top.

The working principle is as follows: when the unhairing rubber mold is used, firstly, when the mold is assembled, the lower mold insert 6 is arranged inside the lower mold plate 3, the middle mold plate 2 is placed on the lower mold plate 3 through the positioning pin 7, the middle mold insert 5 and the middle mold plate 2 are used for installation, the innermost side of the middle mold insert 5 and the lower mold insert 6 are tightly matched to form the annular injection molding groove 11, the upper mold plate 1, the middle mold plate 2 and the lower mold plate 3 are locked and fixed through the fixing bolt 8, the upper mold insert 4 and the upper mold plate 1 are matched and connected, so that the upper mold insert 4 and the lower mold insert 6 are tightly connected, when rubber injection molding is carried out, the rubber preform 10 is heated and injected into the flow channel hole 9, and because the flow channel hole 9 is positioned in the middle position of the injection molding groove 11, the rubber raw material is uniformly injected into the injection molding groove 11 through the six flow channel holes 9 with equal included angles, and then the rubber product with the same shape as the injection groove 11 is formed by cooling the mold, in the process of injection molding, because the distance from the inner side surface of the injection groove 11 to the edge of the clearance groove 12 is equal to the distance from the outer side surface of the injection groove 11 to the edge of the bottom of the upper mold insert 4, and a narrow gap exists between the upper mold insert 4 and the middle mold insert 5, the rubber raw material overflowing from the connection part of the edge of the injection groove 11 is separated from the clearance groove 12, the gap between the upper mold insert 4 and the middle mold insert 5 and the gap between the middle mold insert 5 and the lower mold insert 6 respectively, thereby effectively avoiding burrs occurring in rubber production, after the processing of the rubber product is completed, the upper mold insert 4 can be taken out from the upper mold plate 1 by the butt joint of the thread groove 13 at the edge of the top of the upper mold insert 4 and a matched screw rod, thereby completing the taking, and cleans the rubber residue between the upper mold insert 4, the middle mold insert 5 and the lower mold insert 6, which is not described in detail in this specification, is well known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a no deckle edge's rubber mold, includes cope match-plate pattern (1), locating pin (7) and thread groove (13), its characterized in that: a middle template (2) is arranged below the upper template (1), a lower template (3) is arranged on one side of the middle template (2) far away from the upper template (1), wherein,

an upper mold insert (4) is arranged at the center of the inner part of the upper template (1), a middle mold insert (5) is arranged in the middle template (2), a lower mold insert (6) is fixed in the lower template (3), the positioning pins (7) are connected to the four corners of the upper template (1), the middle template (2) and the lower template (3) in a penetrating manner, and fixing bolts (8) are connected to the adjacent positions of the positioning pins (7);

the mould is characterized in that a runner hole (9) is formed in the upper mould insert (4), a rubber pre-forming material (10) is arranged above the runner hole (9), an injection molding groove (11) is formed between the middle mould insert (5) and the lower mould insert (6) in a matching mode, a clearance groove (12) is formed in the top of the lower mould insert (6), and a thread groove (13) is formed in the edge of the top of the upper mould insert (4).

2. The burr-free rubber mold of claim 1, wherein: the outer side section size of the upper die insert (4) is matched with the inner section size of the upper die plate (1), the section shape of the upper die insert (4) is circular, the thickness of the upper die insert (4) is larger than that of the upper die plate (1), and the upper die insert (4) is connected with the upper die plate (1) in a clamping mode.

3. The burr-free rubber mold of claim 1, wherein: six flow passage holes (9) are arranged, the circle center connecting lines among the six flow passage holes (9) are in a regular hexagon shape, the distances from the circle centers of the six flow passage holes (9) to the circle center of the upper die insert (4) are equal, and the axis line of the flow passage hole (9) is located in the middle of the injection molding groove (11).

4. The burr-free rubber mold of claim 1, wherein: the injection molding groove (11) is annular, and the cross section of the injection molding groove (11) is rectangular.

5. The burr-free rubber mold of claim 1, wherein: the clearance groove (12) is positioned at the center of the top of the lower die insert (6), the clearance groove (12) is concave, and the distance from the clearance groove (12) to the inner edge of the injection groove (11) is equal to the distance from the outer edge of the injection groove (11) to the bottom edge of the upper die insert (4).