CN208960958U - A kind of exhaust needle for squeeze casting mould - Google Patents
A kind of exhaust needle for squeeze casting mould Download PDFInfo
- Publication number
- CN208960958U CN208960958U CN201821500639.6U CN201821500639U CN208960958U CN 208960958 U CN208960958 U CN 208960958U CN 201821500639 U CN201821500639 U CN 201821500639U CN 208960958 U CN208960958 U CN 208960958U
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- exhaust
- cooperation section
- casting mould
- air discharge
- mold cavity
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of exhaust needles for squeeze casting mould, including inlaying bar, the front end of the edge bar is the exhaust portion being cooperatively connected with mold cavity, the exhaust portion includes the second cooperation section by the first cooperation section of front end and far from front end, multiple air discharge ducts are circumferentially equipped at intervals on the peripheral wall of the second cooperation section, the exhaust clearance of the air discharge duct is unilateral 0.05mm.The exhaust needle construction of the utility model is simple, it is convenient to for exhaust needle being installed on mold, the molten metal for entering mold cavity through running channel is full of mold cavity under the action of die casting machine injection cylinder, its internal trapped gas is discharged by the air discharge duct on exhaust needle simultaneously, thus manufactured interiors of products gas residue is few, improves qualification rate of the product after T6 is heat-treated.
Description
Technical field
The utility model relates to mold design technical field, in particular to a kind of exhaust needle for squeeze casting mould.
Background technique
During extrusion casint, it is desirable that mould type intracavity gas must be completely exhausted out, and not so product is heat-treated it by T6
Afterwards, product surface will appear the bubble bulge as sweat grain.These aerations to product appearance, meanwhile, internal bubble
The intensity that also will affect product, the product for bubble occur can all be judged as rejected product.
In general, can be by designing overflow running channel on mold, exhaust duct is exhausted.But some are local, are limited
In the structure of mold, overflow running channel or exhaust duct can not be opened, be just easy to generate trapped gas, cause gas residue product it
In.
Utility model content
The purpose of this utility model is to provide a kind of exhaust needles for squeeze casting mould, by mold part trapped gas
Mold cavity is discharged, improves the gas residue problem of product.
Used technical solution to solve above-mentioned technical problem: a kind of exhaust needle for squeeze casting mould, including
Bar is inlayed, the front end of the edge bar is the exhaust portion being cooperatively connected with mold cavity, and the exhaust portion includes by the first of front end
Cooperate section and the second cooperation section far from front end, is circumferentially equipped at intervals with multiple air discharge ducts, institute on the peripheral wall of the second cooperation section
The exhaust clearance for stating air discharge duct is unilateral 0.05mm.
Further, the exhaust portion and mold cavity use H7/g6 clearance fit.
Further, the edge bar is made of SKD61 mould steel, is heat-treated to 1000~1100HV.
Further, the quantity of the air discharge duct is 4.
Further, the diameter of the first cooperation section is 0.1mm smaller than the diameter of the second cooperation section.
The utility model has the advantages that the exhaust needle construction of the utility model is simple, it is convenient to exhaust needle is installed on mold, through pouring
The molten metal that road enters mold cavity leads under the action of die casting machine injection cylinder full of mold cavity, while by its internal trapped gas
The air discharge duct discharge on exhaust needle is crossed, thus manufactured interiors of products gas residue is few, improves product after T6 is heat-treated
Qualification rate.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the side view of the utility model.
Specific embodiment
Referring to Figures 1 and 2, the utility model is a kind of exhaust needle for squeeze casting mould, including inlays bar 1, described
The front end for inlaying bar 1 is the exhaust portion being cooperatively connected with mold cavity, and the gap H7/g6 is used between the exhaust portion and mold cavity
Cooperation, the exhaust portion include the second cooperation section 3 by the first cooperation section 2 of front end and far from front end, first cooperation
The diameter of section 2 is 0.1mm smaller than the diameter of the second cooperation section 3, and the length of the first cooperation section 2 and the second cooperation section 3 is
10.00mm ± 5mm, it is described second cooperation section 3 peripheral wall on be circumferentially equipped at intervals with 4 air discharge ducts 4, the exhaust of the air discharge duct 4
Gap is unilateral 0.05mm, is conducive to be vented.For the ease of processing air discharge duct 4 on the peripheral wall of the second cooperation section 3, can use
Grinding machine polish 4 planes, when exhaust needle is installed on mold, each plane in interval on the peripheral wall of the second cooperation section 3
The gap formed between mold cavity is air discharge duct 4.In order to be conducive to exhaust, the rear end of the edge bar 1 is equipped with empty avoiding portion, keeps away
The shape in empty portion, size are depending on matched mold shape.
Preferably, the edge bar 1 use SKD61 mould steel is made one kind as the utility model, it is heat-treated to 1000~
1100HV.Specifically, first 1 vacuum hardening of edge bar is tempered, guarantees that its hardness in 44~48HRC, carries out surface nitrogen later
Change processing guarantees its hardness in 1000~1100HV, and the hardness height of edge bar 1 worth in this way, good toughness, heat-resisting balance are good,
Long service life.
The exhaust needle construction that this is used for squeeze casting mould is simple, and at low cost, effect is good, it is convenient to install exhaust needle
Onto mold, the first cooperation section 2 and the second cooperation section 3 and mold cavity are cooperatively connected.It is poured into the indoor molten metal of pressure
Under the action of die casting machine injection cylinder, enter mold cavity through running channel, by its inside while molten metal is full of mold cavity
Trapped gas passes sequentially through the first cooperation section 2 and the uniformly discharge of each air discharge duct 4 on exhaust needle, due to the first cooperation section
2 diameter is 0.1mm smaller than the diameter of the second cooperation section 3, therefore cooperates tighter between the second cooperation section 3 and mold cavity
Close, the first cooperation section 2 and the second cooperation section 3 form step, and when molten metal is full of mold cavity, molten metal be can only enter
The gap formed to the first cooperation section 2 and mold cavity, and the second cooperation section 3 can not be passed through to be expelled to mold
In, the case where molten metal blocks mold generation is avoided, thus manufactured interiors of products gas residue is few, improves product through T6
Qualification rate after heat treatment.
The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
State embodiment, within the scope of knowledge possessed by those of ordinary skill in the art, can also do not depart from it is practical
Various changes can be made under the premise of novel objective.
Claims (5)
1. a kind of exhaust needle for squeeze casting mould, it is characterised in that: including inlaying bar (1), the front end of edge bar (1) is
The exhaust portion being cooperatively connected with mold cavity, the exhaust portion include by the first cooperation section (2) of front end and far from front end
Second cooperates section (3), is circumferentially equipped at intervals with multiple air discharge ducts (4), the air discharge duct on the peripheral wall of second cooperation section (3)
(4) exhaust clearance is unilateral 0.05mm.
2. the exhaust needle according to claim 1 for squeeze casting mould, it is characterised in that: the exhaust portion and mold
Type chamber uses H7/g6 clearance fit.
3. the exhaust needle according to claim 1 for squeeze casting mould, it is characterised in that: the edge bar (1) uses
SKD61 mould steel is made, and is heat-treated to 1000~1100HV.
4. the exhaust needle according to claim 1 for squeeze casting mould, it is characterised in that: the first cooperation section
(2) diameter is 0.1mm smaller than the diameter of the second cooperation section (3).
5. the exhaust needle according to any one of claims 1 to 4 for squeeze casting mould, it is characterised in that: the row
The quantity of air drain (4) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821500639.6U CN208960958U (en) | 2018-09-12 | 2018-09-12 | A kind of exhaust needle for squeeze casting mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821500639.6U CN208960958U (en) | 2018-09-12 | 2018-09-12 | A kind of exhaust needle for squeeze casting mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208960958U true CN208960958U (en) | 2019-06-11 |
Family
ID=66755928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821500639.6U Active CN208960958U (en) | 2018-09-12 | 2018-09-12 | A kind of exhaust needle for squeeze casting mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208960958U (en) |
-
2018
- 2018-09-12 CN CN201821500639.6U patent/CN208960958U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |