CN218256447U - Unhairing limit mould - Google Patents
Unhairing limit mould Download PDFInfo
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- CN218256447U CN218256447U CN202222246704.XU CN202222246704U CN218256447U CN 218256447 U CN218256447 U CN 218256447U CN 202222246704 U CN202222246704 U CN 202222246704U CN 218256447 U CN218256447 U CN 218256447U
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Abstract
The utility model relates to a mould field specifically is a unhairing limit mould. The method comprises the following steps: a mold body for molding a product; the mould comprises a mould body and is characterized in that a first insert and a second insert are further arranged in the mould body, the first insert is used for forming a first groove of a product, and the second insert is used for forming a second groove of the product; one end of the second insert is vertically abutted against the first insert; and one end of the second insert, which is close to the first insert, is provided with a back-off which is arranged on the outer wall of the second insert. First accomplish the back with the installation of second mold insert, install first mold insert again, first mold insert can be in the installation, with the back-off butt on the second mold insert to with the back-off contact, deckle edge can produce on the back-off, the position that the position of back-off corresponds the product has less sunkenly, has reduced the deckle edge and has produced the possibility in the hole, then has reduced the possibility that the product is difficult to use, has increased the quality of product.
Description
Technical Field
The utility model relates to a mould field specifically is a unhairing limit mould and image device.
Background
The choice of plastic molding depends largely on the type of plastic (thermoplastic or thermoset), the starting form, and the shape and dimensions of the article. The usual methods for processing thermoplastics are extrusion, injection moulding, calendering, blow moulding and thermoforming, and the processing of thermosets is generally by compression moulding, transfer moulding and also by injection moulding. Plastic molding is the process of forming plastic in various forms (powders, pellets, solutions and dispersions) into articles or blanks of desired shape.
In the molding process, for a high-precision product, when two grooves in the vertical direction exist on the high-precision product, the two grooves need to be molded by using two inserts in the vertical direction, and in the preparation process of a mold, in order to prevent a gap from being generated at the connecting position of the two grooves, the two inserts need to be tightly attached, so that one insert needs to be installed at first, and the other insert needs to be installed; but because the mould itself has certain tolerance, two mold inserts when the contact, the border position of two mold inserts will produce deckle edge, will produce deckle edge at the border position of product then, will produce deckle edge on the vertical hole promptly, and the product will be difficult to use, very big reduction the quality of product.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to solve current technical problem, provide a unhairing limit mould, reduced the deckle edge and produced the possibility in the hole, reduced the possibility that the product is difficult to use then, increased the quality of product.
The utility model provides a technical scheme as follows:
a deburring die comprising:
a mold body for molding a product;
the mold comprises a mold body and is characterized in that a first insert and a second insert are further arranged in the mold body, the first insert is used for forming a first groove of a product, and the second insert is used for forming a second groove of the product;
one end of the second insert is vertically abutted against the first insert;
and one end of the second insert, which is close to the first insert, is provided with a back-off which is arranged on the outer wall of the second insert.
Among this technical scheme, through the setting of back-off, at the in-process of installing first mold insert and second mold insert, can be at first with the second mold insert installation completion back, install first mold insert again, first mold insert can be in the installation, with the back-off butt on the second mold insert, and with the back-off contact, deckle edge can produce on the back-off, the position that the position of back-off corresponds the product has less sunkenly, reduced the deckle edge and produced the possibility on the hole, then reduced the possibility that the product is difficult to use, the quality of product has been increased.
Preferably, the first insert is installed in the mold body along a preset direction, and the inverted edge is arranged on one side of the second insert in the preset direction.
In the technical scheme, the possibility of contact between the reverse buckle and the first insert is increased through the limitation of the reverse buckle position, the possibility of contact between the first insert and the second insert is reduced, and the use of reverse buckle materials is reduced.
Preferably, the second insert is a cylinder;
and taking the axis of the second insert as an axis, wherein the surrounding angle of the inverted buckle is more than or equal to 180 degrees.
Among this technical scheme, through setting up the second mold insert into the cylinder, the second recess can become the round hole, and the product of being convenient for forms the shaft hole cooperation, has increased the reliability when the product assembly.
Preferably, the number of the second inserts is two, and the two second inserts are symmetrically arranged on the first insert.
Among this technical scheme, through the setting of a plurality of second mold inserts, increased the quantity of second recess on the product, then increased the reliability of product assembly.
Preferably, the outer walls of the two second inserts are coplanar.
In this technical scheme, two second mold inserts and first mold insert can form the second recess jointly, reliability when further having increased the product assembly.
Preferably, the reverse buckle satisfies the following conditional expression:
R1/R2＜0.01；
wherein, R1 is the radius of the back-off, and R2 is the radius of the second insert.
In the technical scheme, the radius of the inverted buckle and the radius of the second insert are limited, so that the demolding reliability of the second insert after the product is molded is improved, and the clamping possibility of the second insert and the mold body is reduced.
Preferably, the undercut radius is less than 0.05mm.
In the technical scheme, the limitation on the thickness of the reverse buckle reduces the possibility of overlarge thickness and the possibility of overlarge radius of the second insert, and increases the manufacturing reliability of the second insert.
Preferably, a connecting piece is arranged at one end, away from the first insert, of the second insert, and the second insert is connected to the connecting piece through a chamfer.
In the technical scheme, the chamfer is arranged, so that the demolding reliability of the second insert is further improved, and the possibility of product deformation of the second insert in the demolding process is reduced.
Preferably, a round corner is arranged at one end, far away from the first insert, of the reverse buckle, and the circle center of the round corner is located on the outer side of the second insert.
Among this technical scheme, through the setting of fillet, further increased the reliability of second mold insert drawing of patterns, reduced the possibility of second mold insert product deformation in drawing of patterns process, the processing of the back-off of also being convenient for.
Preferably, the second insert is a plastic part.
In the technical scheme, the reliability of demoulding of the second insert is further improved by limiting the material of the second insert, and the possibility of product damage of the second insert in the demoulding process is reduced.
Compared with the prior art, the utility model provides a pair of unhairing limit mould has following beneficial effect:
1. through the setting of back-off, at the in-process of installing first mold insert and second mold insert, can be at first accomplish the back with the installation of second mold insert, install first mold insert again, first mold insert can be in the installation, with the back-off butt on the second mold insert, and with the back-off contact, deckle edge can produce on the back-off, the position that the position of back-off corresponds the product has less sunkenly, reduced the possibility that deckle edge produced on the hole, then reduced the possibility that the product is difficult to use, the quality of product has been increased.
2. Through setting up the second mold insert into the cylinder, the second recess can become the round hole, and the product of being convenient for forms the shaft hole cooperation, has increased the reliability when product assembly.
3. Through the limitation of the radius of the inverted buckle and the radius of the second insert, the reliability of demolding the second insert after the product is molded is increased, and the possibility of clamping the second insert with the mold body is reduced.
Drawings
The above features, technical features, advantages and modes of realisation of a deburring die will be further described in the following, in a clearly understandable manner, with reference to the accompanying drawings, which illustrate preferred embodiments.
Fig. 1 is a schematic structural view of a deburring mold of the present invention;
fig. 2 is a schematic view of an internal structure of a deburring mold according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a schematic structural view of a deburring mold and a product of the present invention;
fig. 5 is a schematic structural view of a product formed by the deburring mold of the present invention.
The reference numbers illustrate: 1. a first insert; 2. a second insert; 3. producing a product; 4. reversing; 5. a connecting member.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Examples
A deburring die comprising: the mould body specifically indicates upper and lower mould in the mould injection process, the mould body is used for shaping product 3, and product 3 can be formed in the mould body.
The mold is characterized in that a first insert 1 and a second insert 2 are further arranged in the mold body, the first insert 1 is used for forming a first groove of a product 3, the second insert 2 is used for forming a second groove of the product 3, and specifically, the sectional areas of the first insert 1 and the second insert 2 can be in any shapes.
One end of the second insert 2 vertically abuts against the first insert 1, and specifically, in this embodiment, the first insert 1 can be horizontally placed, so that the upper end or the lower end of the second insert 2 can vertically abut against the first insert 1, since the first recess and the second recess can communicate.
One end of the second insert 2, which is close to the first insert 1, is provided with a back-off 4, and the back-off 4 is arranged on the outer wall of the second insert 2.
Specifically, taking the upper second insert 2 as an example, the lower end of the upper second insert 2 can be abutted against the first insert 1, and the undercut 4 can be formed on the outer wall of the lower end of the second insert 2.
In this embodiment, through the setting of back-off 4, at the in-process of installing first mold insert 1 and second mold insert 2, can be at first with second mold insert 2 installation completion back, install first mold insert 1 again, first mold insert 1 can be in the installation, with the 4 butt of back-off on the second mold insert 2, and with the contact of back-off 4, deckle edge can produce on back-off 4, there is less sunken in the position that the position of back-off 4 corresponds product 3, the possibility that deckle edge produced on the hole has been reduced, then reduced the possibility that product 3 is difficult to use, the quality of product 3 has been increased.
The first insert 1 is installed in the mold body along a preset direction, and the back-off 4 is arranged on one side of the second insert 2 along the preset direction.
Specifically, when the first insert 1 can be placed in the mold body in a horizontal direction, for example, when the first insert 1 can be put into the mold body from the rear side to the front side, the first insert 1 can strike the second insert 2, and therefore the undercut 4 can be provided at the front side of the second insert 2.
In this embodiment, the possibility that the undercut 4 contacts the first insert 1 is increased by limiting the position of the undercut 4, the possibility that the first insert 1 contacts the second insert 2 is also reduced, and the use of material for the undercut 4 is reduced.
The second insert 2 is a cylinder;
the surrounding angle of the reverse buckle 4 is larger than or equal to 180 degrees by taking the axis of the second insert 2 as an axis.
In this embodiment, through setting up second mold insert 2 into the cylinder, the second recess can become the round hole, and the product 3 of being convenient for forms the shaft hole cooperation, has increased the reliability when the product 3 assembles.
The number of the second inserts 2 is two, and the two second inserts 2 are symmetrically arranged on the first insert 1.
Through the setting of a plurality of second mold inserts 2, increased the quantity of second recess on product 3, increased the reliability of product 3 assembly then.
The outer walls of the two second inserts 2 are coplanar.
The two second inserts 2 and the first insert 1 can jointly form a second recess, further increasing the reliability of the assembly of the product 3.
The reverse buckle 4 satisfies the following conditional expression:
D/R＜0.01；
wherein D is the thickness of the undercut 4 and R is the radius of the second insert 2.
Specifically, R is 1.8mm, d is 0.01mm, and R1/R2=0.006.
In this embodiment, the thickness of the undercut 4 and the radius of the second insert 2 are defined, so that the reliability of demolding the second insert 2 after the product 3 is molded is increased, and the possibility of clamping the second insert 2 with the mold body is reduced.
The radius of the back-off 4 is less than 0.05mm.
In this embodiment, the limitation of the thickness of the undercut 4 reduces the possibility of an excessive thickness, and also reduces the possibility of an excessive radius of the second insert 2, thereby increasing the reliability of the manufacture of the second insert 2.
One end, far away from the first insert 1, of the second insert 2 is provided with a connecting piece 5, and the second insert 2 is connected to the connecting piece 5 through a chamfer.
In this embodiment, the reliability of demolding of the second insert 2 is further increased by the arrangement of the chamfer, and the possibility of deformation of the product 3 in the demolding process of the second insert 2 is reduced.
And a round angle is arranged at one end of the reverse buckle 4 far away from the first insert 1, and the circle center of the round angle is positioned at the outer side of the second insert 2.
In this embodiment, through the setting of fillet, further increased the reliability of second mold insert 2 drawing of patterns, reduced the possibility that second mold insert 2 warp at drawing of patterns in-process product 3, also be convenient for the processing of back-off 4.
Specifically, in the process of machining the undercut 4, the upper end of the second insert 2 is abutted against the grinding wheel, and the second insert 2 is moved in the longitudinal direction of the second insert 2 until the end is reached, and moved outward, so that the second insert 2 is separated from the grinding wheel, thereby forming the undercut 4.
The second insert 2 is a plastic part, specifically, the extrusion force in demolding does not exceed 80% of the bending strength in a plastic material characteristic table, and the second insert 2 can be ABS, PC + ABS, PC, POM, PC + GF10%, PC + GF20, PP, PE and PA.
In this embodiment, the reliability of demolding of the second insert 2 is further increased by the limitation of the material of the second insert 2, and the possibility of damage to the product 3 during demolding of the second insert 2 is reduced.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A deburring die comprising:
a die body for molding a product;
the mould comprises a mould body and is characterized in that a first insert and a second insert are further arranged in the mould body, the first insert is used for forming a first groove of a product, and the second insert is used for forming a second groove of the product;
one end of the second insert is vertically abutted against the first insert;
and one end of the second insert, which is close to the first insert, is provided with a back-off which is arranged on the outer wall of the second insert.
2. The deburring die of claim 1, wherein:
the first insert is installed in the mold body along a preset direction, and the reverse buckle edge is arranged on one side of the second insert in the preset direction.
3. A deburring die according to claim 1 or 2 wherein:
the second insert is a cylinder;
and taking the axis of the second insert as an axis, wherein the surrounding angle of the inverted buckle is more than or equal to 180 degrees.
4. The deburring die of claim 1, wherein:
the number of the second inserts is two, and the two second inserts are symmetrically arranged on the first insert.
5. The deburring die of claim 4, wherein:
the outer walls of the two second inserts are coplanar.
6. A deburring die as claimed in claim 3, wherein:
the back-off satisfies the following conditional expression:
D/R＜0.01；
and D is the thickness of the reverse buckle, and R is the radius of the second insert.
7. A deburring die as claimed in claim 3, wherein:
the radius of the back-off is less than 0.05mm.
8. A deburring die as claimed in claim 1, wherein:
and a connecting piece is arranged at one end of the second insert, which is far away from the first insert, and the second insert is connected with the connecting piece through a chamfer.
9. A deburring die as claimed in claim 8, wherein:
and one end of the reverse buckle, which is far away from the first insert, is provided with a fillet, and the circle center of the fillet is positioned on the outer side of the second insert.
10. The deburring die of claim 1, wherein:
the second insert is a plastic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222246704.XU CN218256447U (en) | 2022-08-25 | 2022-08-25 | Unhairing limit mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222246704.XU CN218256447U (en) | 2022-08-25 | 2022-08-25 | Unhairing limit mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218256447U true CN218256447U (en) | 2023-01-10 |
Family
ID=84775990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222246704.XU Active CN218256447U (en) | 2022-08-25 | 2022-08-25 | Unhairing limit mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218256447U (en) |
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2022
- 2022-08-25 CN CN202222246704.XU patent/CN218256447U/en active Active
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