CN103144258A

CN103144258A - Forming mold

Info

Publication number: CN103144258A
Application number: CN 201110403290
Authority: CN
Inventors: 周昀佑
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2011-12-07
Filing date: 2011-12-07
Publication date: 2013-06-12

Abstract

The invention provides a forming mold, comprising a first mold core and a second mold core matching with the first mold core. The first mold core is provided with a mold cavity to make the first mold core and the second mole core co-form a forming cavity during mold clamping; the first mold core is also provided with a first parting surface around the mold cavity; the second mold core is provided with a second parting surface; the first parting surface is provided with a plurality of first vent grooves; the second parting surface is provided with a plurality of second vent grooves; extension directions of the first vent grooves and the extension directions of the second vent grooves are intersected so as to form a plurality of vent channels during the mold clamping; at least part of the vent channels are communicated with the forming cavity; the first vent grooves are processing traces formed during milling the first mold core; and the second vent grooves are processing traces formed during milling the second mold core. The forming mold has the advantages of exhausting air temperature and relatively high efficiency, and is not likely to cause the formation of rough edges on the surface of a formed product.

Description

Mould

Technical field

The present invention relates to a kind of mould, relate in particular to the higher mould of a kind of exhaust efficiency.

Background technology

In the design of mould, the venting quality of mould is an important indicator, especially when forming thin-walled products, because die cavity is less, needs larger clamp force during high speed injection, thereby causes the venting quality of mould relatively poor.Generally offer air discharge duct on the slide block of mould, and adopt vavuum pump to be communicated with to improve exhaust efficiency with this air discharge duct, yet air discharge duct more easily causes the product burr, and its exhaust efficiency still is subjected to the vavuum pump Power Limitation.

Summary of the invention

In view of above-mentioned condition, be necessary to provide a kind of exhaust efficiency higher and be difficult for causing the mould of product burr.

A kind of mould, it comprises the first die and the second die that coordinates with the first die.Offer die cavity on the first die, so that the first die and the second die are formed into die cavity jointly during matched moulds, the first die also is formed with the first die joint around this die cavity, and the second die is formed with the second die joint.Be formed with many first row air drains on the first die joint, be formed with many second row air drains on the second die joint.And the bearing of trend of the bearing of trend of many second row air drains and many second row air drains intersects, and forming many exhaust passages that are interconnected when the matched moulds, and this exhaust passage of part is communicated with this forming cavity at least.The processing trace that the first row air drain forms when being Milling Process the first die, the processing trace that the second row air drain forms when being Milling Process the second die.

A kind of mould, it comprises the first die and the second die that coordinates with the first die.Offer die cavity on the first die, so that the first die and the second die are formed into die cavity jointly during matched moulds, the first die also is formed with the first die joint around this die cavity, and the second die is formed with the second die joint.Be formed with many first row air drains on the first die joint, be formed with many second row air drains on the second die joint.The bearing of trend of the bearing of trend of many second row air drains and many second row air drains intersects, and forming many exhaust passages that are interconnected when the matched moulds, and the part exhaust passage is communicated with forming cavity at least.The degree of depth of first row air drain and width are 1 micron to 5 microns, and the degree of depth of second row air drain and width are 1 micron to 5 microns.

During above-mentioned mould matched moulds moulding, first row air drain on the first die joint and the second row air drain on the second die joint intersect, many exhaust passages that are interconnected of common formation, and this exhaust passage of part is communicated with this forming cavity at least, due to the first row air drain and second row air drain size is less and quantity is more, make that the exhaust passage size is less and quantity is more, thus the exhaust gentleness and efficient higher, be difficult for causing the surface of shaped article to form burr.

Description of drawings

Fig. 1 is the schematic perspective view of the mould of embodiment of the present invention.

Cutaway view when Fig. 2 is the mould matched moulds of embodiment of the present invention.

The main element symbol description

Mould	100
		The first die	10
Die cavity	11
		Runner	13
The first die joint	15
		The first row air drain	151
The second die	30
		Main body	31
Sprue	311
		Runner	313
The second die joint	315
		The second row air drain	3151
Lug boss	33
		Forming cavity	330
The exhaust passage	1510

The following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.

The specific embodiment

See also Fig. 1, the mould 100 of embodiment of the present invention comprises the first die 10 and the second die 30 that coordinates with the first die 10.Mould 100 also comprises the various functional entities such as fixed mechanism, heating arrangements, cooling body and ejecting mechanism, yet, succinct for describing, introduce the first die 10 and the second die 30 in present embodiment.

Please consult simultaneously Fig. 2, the symmetrical runner 13 that offers two die cavitys 11 and be communicated with two die cavitys 11 on the first die 10.The first die 10 is formed with the first die joint 15, the first die joints 15 around two die cavitys 11 and runner 13.Be formed with the first row air drain 151 that is strip of many almost parallels on the first die joint 15, and many first row air drains 151 roughly are distributed in whole the first die joint 15 equably.In the present embodiment, the cross section of each first row air drain 151 is roughly triangular in shape, and its degree of depth and width all are roughly 1 micron (μ m) to 5 μ m.The processing trace that forms when first row air drain 151 is Milling Process the first die 10.The concrete shape and the size thereof that are appreciated that first row air drain 151 can change with different Milling Process modes, as CNC milling machine processing mode or surface grinding machine processing mode, also can change with different machined parameters.

The second die 30 comprises main body 31 and is arranged at two lug bosses 33 on main body 31.Two die cavitys 11 with the first die 10 are corresponding respectively for two lug bosses 33, to be formed into die cavity 330.Main body 31 offers sprue 311 and runner 313.Sprue 311 is opened in the middle part of main body 31.Runner 313 is communicated with sprue 311, and corresponding with the runner 13 on the first die 10, between two lug bosses 33.One gusset of relative the first die 10 of main body 31 is formed with the second die joint 315 around two lug bosses 33.The second die joint 315 is corresponding with the first die joint 15 of the first die 10.Be formed with the second row air drain 3151 that is strip of many almost parallels on the second die joint 315, and the bearing of trend of many first row air drains 151 on the bearing of trend of many second row air drains 3151 and the first die joint 15 intersects, form a predetermined angle, as 30 degree, 45 degree, 90 degree etc.Many second row air drain 3151 roughly is distributed in whole the second die joint 315 equably.In the present embodiment, the cross section of each second row air drain 3151 is roughly triangular in shape, and its degree of depth and width all are roughly 1 micron (μ m) to 5 μ m.The processing trace that forms when second row air drain 3151 is Milling Process the first die 10.The concrete shape and the size thereof that are appreciated that second row air drain 3151 can change with different Milling Process modes, as CNC milling machine processing mode or surface grinding machine processing mode, also can change with different machined parameters.Second row air drain 3151 intersects vertically with first row air drain 151, when intersecting vertically, when Milling Process the first die 10 and the second die 30 more for convenience.

During the matched moulds moulding, second row air drain 3151 on first row air drain 151 on the first die joint 15 and the second die joint 315 intersects, many exhaust passages that are interconnected 1510 of common formation, and part exhaust passage 151 is communicated with forming cavity 330 at least, due to first row air drain 151 and second row air drain 3151 sizes are less and quantity is more, make that exhaust passage 1510 sizes are less and quantity is more, thus the exhaust gentleness and efficient higher, be difficult for causing the surface of shaped article to form burr.And first row air drain 151 and second row air drain 3151 need not additionally to increase operation and offer air discharge duct during by Milling Process the first die 10, the second die 30 and form, and have saved the manufacturing cost of mould 100.

In addition, those skilled in the art can also do other variation in spirit of the present invention, yet when, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.

Claims

1. mould, it comprises the first die and the second die that coordinates with this first die, offer die cavity on the first die, so that this first die and the second die are formed into die cavity jointly during matched moulds, the first die also is formed with the first die joint around this die cavity, the second die is formed with the second die joint, it is characterized in that: be formed with many first row air drains on the first die joint, be formed with many second row air drains on the second die joint, and the bearing of trend of these many second row air drains intersects with the bearing of trend of these many second row air drains, to form many exhaust passages that are interconnected when the matched moulds, wherein this exhaust passage of part is communicated with this forming cavity at least, and the processing trace that this first row air drain forms when being this first die of Milling Process, the processing trace that this second row air drain forms when being this second die of Milling Process.

2. mould as claimed in claim 1, it is characterized in that: the degree of depth of this first row air drain and width are 1 micron to 5 microns.

3. mould as claimed in claim 1, it is characterized in that: the degree of depth of this second row air drain and width are 1 micron to 5 microns.

4. mould as claimed in claim 2 or claim 3, it is characterized in that: the cross section of this first row air drain or this second row air drain is all triangular in shape.

5. mould as claimed in claim 1, it is characterized in that: this first row air drain is distributed in whole the first die joint.

6. mould as claimed in claim 1, it is characterized in that: this second row air drain is distributed in whole the second die joint.

7. mould as claimed in claim 1, it is characterized in that: these many first row air drains are parallel to each other, and these many second row air drains are parallel to each other.

8. mould as claimed in claim 1 is characterized in that: these many first row air drains intersect vertically with these many second row air drains.

9. mould, it comprises the first die and the second die that coordinates with this first die, the first die offers die cavity, so that this first die and the second die are formed into die cavity jointly during matched moulds, the first die also is formed with the first die joint around this die cavity, the second die is formed with the second die joint, it is characterized in that: be formed with many first row air drains on the first die joint, be formed with many second row air drains on the second die joint, and the bearing of trend of these many second row air drains intersects with the bearing of trend of these many second row air drains, to form many exhaust passages that are interconnected when the matched moulds, at least this exhaust passage of part is communicated with this forming cavity, and the degree of depth of this first row air drain and width are 1 micron to 5 microns, the degree of depth of this second row air drain and width are 1 micron to 5 microns.

10. mould as claimed in claim 9, is characterized in that: the processing trace that this first row air drain forms when being this first die of Milling Process, the processing trace that this second row air drain forms when being this second die of Milling Process.