CN107457383A - A kind of die-casting forming die and compression molding process of LED display module drain pan - Google Patents
A kind of die-casting forming die and compression molding process of LED display module drain pan Download PDFInfo
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- CN107457383A CN107457383A CN201710670529.8A CN201710670529A CN107457383A CN 107457383 A CN107457383 A CN 107457383A CN 201710670529 A CN201710670529 A CN 201710670529A CN 107457383 A CN107457383 A CN 107457383A
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- 238000004512 die casting Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 71
- 238000000748 compression moulding Methods 0.000 title claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 44
- 238000005266 casting Methods 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000009826 distribution Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 210000000981 epithelium Anatomy 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims description 7
- 238000005345 coagulation Methods 0.000 claims description 7
- 238000010410 dusting Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 28
- 239000003818 cinder Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention relates to LED display manufacturing technology field, the especially a kind of die-casting forming die and compression molding process of LED display module drain pan.Wherein, mould includes preceding mould assembly and rear mould assembly, the die joint of mould assembly offers rear die casting shaping area, the charging runner and discharge sprue that are connected with rear die casting shaping area afterwards, and charging runner includes charging sprue and several charging secondary flow roads that transverse flow channels area for feeding sprue is connected with rear die casting shaping area and is in charging sprue in same plane；The die joint of preceding mould assembly offers preceding mold forming area, formed with being cast into die cavity between preceding mold forming area and rear die casting shaping area.The mould of the present invention can ensure that the stability of flatness and the accuracy of thickness of cast product, improves the dimensional stability of casting finished products and reduces the dosage of die casting raw material and the yield of waste material；Meanwhile because moulding process process is few, significantly reduce the manufacturing cost of casting.
Description
Technical field
The present invention relates to LED display manufacturing technology field, especially a kind of die cast of LED display module drain pan
Mould and a kind of compression molding process of the LED display module drain pan formed based on this die-casting forming die.
Background technology
It is well known that LED display is with the abundant color of its change, pattern, dynamic display pattern is realized, perfectly
Multimedia and powerful visual impact, information, word, picture, animation and video etc. are shown in many ways
A kind of epoch-making information propagate application product, in various buildings, railway, civil aviaton, stadiums, conference halls, high speed
It is widely used in the places such as highway.Important component of the LED display module drain pan as LED display module
One of, its final product quality can directly influence the quality and performance of LED display module.
At present, the manufacturing process of the drain pan of traditional LED display module is mainly compression molding process, and die cast
Mould is then the core mold components for realizing compression molding process, because die-casting forming die exists necessarily in terms of structure design
The defects of, not only result in the final product quality of drain pan can not obtain effective control, and the technique stream that class mould is carried out according to this
Journey also results in drain pan finished product and certain mass defect be present there is also many drawbacks, is embodied in：
1st, the runner of traditional die-casting forming die and the design of deslagging exhaust block are unreasonable, the die-casting material gold not only melted
Category liquid can not efficiently and uniformly be branched to each shaping position, and waste gas and waste material can not be efficiently controlled, so as to
So that mould is in use, often there is material usage greatly and waste than more serious, drain pan casting (i.e.：Product) easily receive
Compression deformation, because cinder ladle is blocked up causes deformation of products or the problems such as cinder hole be present；
2nd, the stability of the flatness of product and the accuracy of thickness can not ensure that product size is unstable, and fraction defective is inclined
It is high；Meanwhile the manufacturing cost of product entirety is high, it is necessary to using numerous and diverse treatment process, so as to cause the production of product
Excessive cycle, time cost rise, production efficiency is low.And class mould carries out compression molding process typically using as follows according to this
Process, i.e.,：Die casting → die cast → school shape → remove die casting burr → mono- time epithelium → dust → CNC Milling Machinings → go
Ten procedures such as burr → secondary epithelium → electrophoresis after CNC processing；Wherein, the product produced by die cast process
The smoothness of its plane and the levels of precision of thickness can not typically be ensured, therefore need first to correct shape processing, then passed through again
The processes such as follow-up CNC processing deburring can reach product flatness and thickness requirement (i.e.：It is related to CNC processing works
The main purpose of sequence is exactly that the profile to product, flatness, thickness, drilling, tapping etc. carry out after-treatment).
It is that using the main reason for above-mentioned operation：A, rigging position can typically be reserved when drain pan drawing is designed
Allowance, so product out after will again by school shape, burring, CNC processing etc. process processing after can reach
To drawing requirement；B, evade because of the design defect of the runner of mould and deslagging exhaust block as far as possible and easily cause deformation of products, chi
Very little the problem of easily shrinking.When c, due to producing product with such mould, materials are more so that its structure is more sturdy, thus
The stability of the processes such as just follow-up CNC processing can be protected, but so undoubtedly influences whether the production cost of product, artificial assembling
The cost of transportation of cost and product.
The content of the invention
For above-mentioned the shortcomings of the prior art, one of purpose of the invention is to provide a kind of LED display
The die-casting forming die of module drain pan；It is another object of the present invention to provide one kind to be based on above-mentioned die-casting forming die institute shape
Into LED display module drain pan compression molding process.
To achieve these goals, the present invention use first technical scheme for：
A kind of die-casting forming die of LED display module drain pan, it is included each other in the preceding mould of stacked distribution up and down
Assembly and rear mould assembly, it is described after mould assembly die joint on offer one after die casting shaping area, one positioned at rear die casting into
The front side in type area and the charging runner being connected with rear die casting shaping area and after several are located at rear die casting shaping area
Side and the discharge sprue being connected with rear die casting shaping area, the charging runner are in class " T " including a plane projected shape
Shape charging sprue and several each other in parallel arranged be distributed and respectively by feed sprue transverse flow channels area with
The charging secondary flow road that die casting shaping area is connected afterwards, the charging sprue and charging secondary flow road are in same plane；Institute
State the preceding mold forming area that a position relative with rear die casting shaping area is offered on the die joint of preceding mould assembly, the preceding mold forming area
Between rear die casting shaping area die cavity is cast into formed with one；One is provided with the preceding mould assembly and/or on rear mould assembly
The feeding-passage being connected with charging sprue.
Preferably, also opened up respectively on the die joint of the rear mould assembly and positioned at the left and right sides of rear die casting shaping area
There are several discharge secondary flow roads, the discharge secondary flow road is connected with rear die casting shaping area.
Preferably, central point of the feeding-passage on the die joint of rear mould assembly and the left and right of rear die casting shaping area
Vertical range between the extended line at edge is 120mm-150mm.
Preferably, it is further opened with deslagging exhaust stream on the die joint of the rear mould assembly and on rear side of discharge sprue
Road area, the deslagging grate flow channel area include at least two and arranged in the rear mold deslagging teeth groove of left and right parallel arranged, adjacent two
Isolate arm formed with a rear mold between the rear mold deslagging teeth groove row, it is chimeric that contraposition is provided with the die joint of the preceding mould assembly
Between the preceding mould deslagging double wedge row in rear mold deslagging teeth groove row, adjacent two preceding mould deslagging double wedges rows formed with one with
Rear mold isolation arm isolate preceding mould isolation channel of the arm in stacked distribution up and down with respect to position and with rear mold, the rear mold deslagging teeth groove arrange and
Discharge sprue is connected.
Preferably, the deslagging teeth groove that each rear mold deslagging teeth groove row is distributed side by side before and after each other by several
Combine.
Preferably, the preceding mould assembly include offering before one on a die joint the preceding mould bases of die cavity and one be flush-mounted in before
Front cavity in die cavity, the preceding mold forming area are opened on the die joint of front cavity, the preceding mould isolation channel and preceding mould deslagging
Double wedge row may be contained within the die joint of preceding mould bases；
Mould assembly includes a die joint and offers the rear mould bases of die cavity after one and one flush-mounted in rear mold intracavitary after described
Rear cavity, rear die casting shaping area, charging runner and the discharge sprue are opened on the die joint of rear cavity, the row
Slag grate flow channel area is arranged on the die joint of rear mould bases；
After the feeding-passage includes the barrel before being arranged at along the vertical direction in mould bases and is arranged at along the vertical direction
Spreader in mould bases, the spreader are connected sprue is fed with barrel.
Preferably, the rear mould assembly also includes the mould for being arranged at the lower section of rear mould bases and being distributed around the edge of rear mould bases
Pin, be installed in rear mould bases lower surface central area support column, the Ejector Retainer Plate that is set on support column and thimble panel with
It is described and bottom is installed on thimble panel and top sequentially through the thimble of rear mould bases, rear die cavity and rear cavity distribution
A thimble driver for driving thimble to be moved up and down relative to Ejector Retainer Plate by thimble panel is equiped with Ejector Retainer Plate.
Preferably, the edge of the die joint of the rear cavity is provided with positioning convex, the die joint of the front cavity
Edge is offered for the chimeric detent of positioning convex contraposition.
The present invention use second technical scheme for：
A kind of compression molding process of LED display module drain pan, it is to utilize a kind of above-mentioned LED display module bottom
The die-casting forming die of shell obtains the method for module drain pan casting, and it is included in, and high pressure effect is lower to pass through feeding-passage and charging
Runner is to the die casting raw material of die cast intracavitary filling liquid or semi liquid state and makes die casting raw material coagulation forming under pressure
For the die cast process of drain pan casting.
Preferably, it is additionally included in the die casting carried out before die cast process and controls process and in die cast
The process CNC manufacturing procedures that order is carried out afterwards, go die casting burr process, epithelium process and process of dusting；Wherein,
Die casting control process for control preceding mould assembly and rear mould assembly it is relatively closed with formed be cast into die cavity, charging
Runner and discharge sprue；
CNC manufacturing procedures is control preceding mould assembly and the relative opening of rear mould assembly, by the appearance profile edge of drain pan casting
Finishing is processed with CNC；
Die casting burr process is gone to take out the drain pan casting of coagulation forming, removes the hole position burr on drain pan cast(ing) surface；
Epithelium process is that the drain pan casting after finishing is carried out into surface granosealing；
Process of dusting is to carrying out processing of dusting by the drain pan casting of surface granosealing.
As a result of such scheme, mould of the invention uses the feeding manner similar to comb shape to enable die casting raw material
Die cast intracavitary is equably entered by the front side of rear die casting shaping area, and finally ensures the plane of the drain pan casting of shaping
The stability (the controllable margin of tolerance ± 0.15mm) of degree and the accuracy (the controllable margin of tolerance is ± 0.03mm) of thickness, improve
The dimensional stability of casting finished products；Because charging secondary flow road is with feeding sprue by the way of same plane distribution, can reduce
The dosage of die casting raw material and the yield of waste material, be advantageous to save die casting raw material, reduce the manufacturing cost of module drain pan；Together
When, using the deslagging exhaust block of segmented version, the clout for being advantageous to be extruded can be in deslagging grate flow channel area by equably
For die cast to form cinder ladle, avoid the occurrence of traditional moulds easily causes cinder ladle partially thick because of the deslagging exhaust block using a monoblock
The problem of and due to clout can not be extruded equably out of forming cavity and easily mould casting size it is unstable, it is yielding,
The problems such as cinder hole be present；In addition, the moulding process that the architectural characteristic based on mold body is formed then has, process is few, production is all
The plurality of advantages such as the phase is short, production efficiency is high, the bad proportion of goods damageds are low, there is very strong practical value and market popularization value.
Brief description of the drawings
Fig. 1 is planar structure perspective view of the mould of the embodiment of the present invention under main view state；
Fig. 2 is the structural decomposition diagram of the mould of the embodiment of the present invention in the operating condition；
Fig. 3 is planar structure schematic diagram of the rear mould assembly of the embodiment of the present invention under vertical view state；
Fig. 4 is the Standard schematic diagram (one) of the rear mould assembly of the embodiment of the present invention；
Fig. 5 is the Standard schematic diagram (two) of the rear mould assembly of the embodiment of the present invention；
Fig. 6 is planar structure perspective view of the preceding mould assembly of the embodiment of the present invention under state of looking up；
Fig. 7 is the Standard schematic diagram of the preceding mould assembly of the embodiment of the present invention；
Fig. 8 is the process flow chart of the moulding process of the embodiment of the present invention；
Fig. 9 is the rear plan structural representation when drain pan casting of the embodiment of the present invention is handled without CNC manufacturing procedures；
Figure 10 is the front plan structural representation when drain pan casting of the embodiment of the present invention is handled without CNC manufacturing procedures
Figure；
Figure 11 is rear plan structural representation of the drain pan casting of the embodiment of the present invention after the processing of CNC manufacturing procedures
Figure；
Figure 12 is front plan structural representation of the drain pan casting of the embodiment of the present invention after the processing of CNC manufacturing procedures
Figure.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
As shown in Figures 1 to 7 and with reference to the pressure of Fig. 8 to Figure 12, the present embodiment a kind of LED display module drain pan provided
Type casting moulding mould, it includes being distributed and can make the preceding mould assembly a of upper and lower relative motion and rear mould assembly in upper and lower be stacked each other
B, die casting shaping area c after one is offered on rear mould assembly b die joint, and (it is mainly the knot at the back side according to module drain pan
Configuration shape is specifically set, generally the texture structure similar to channel form), one be located at rear die casting shaping area c front side
And the charging runner being connected with rear die casting shaping area c and several be located at rear die casting shaping area c rear side and with it is rear
The discharge sprue d that die casting shaping area c is connected；Wherein, runner is fed including a plane projected shape in class is "T"-shaped to enter
Expect sprue 1 and several mutual transverse flow channels area and rear molds for being distributed in parallel arranged and sprue 1 being fed respectively
The charging secondary flow road 2 that casting shaping area c is connected, charging sprue 1 and charging secondary flow road 2 are in same plane；Meanwhile
The preceding mold forming area e of a position relative with rear die casting shaping area c is offered on preceding mould assembly a die joint, and (it is mainly foundation
The planform on the preceding surface of module drain pan is specifically set, generally the texture structure similar to channel form), preceding mould into
Formed with one being cast into die cavity between type area e and rear die casting shaping area c, (not shown in figure, its main function is to ensure
Module drain pan has certain thickness)；One is provided with feeding the phase of sprue 1 on preceding mould assembly a and/or on rear mould assembly b
The feeding-passage of connection.
Thus, whole mould is being combined according to certain rule and position and is being fixed in such as die casting machine
After in equipment, control preceding mould assembly a and rear mould assembly b is relatively closed (i.e.：Carry out the matched moulds control of mould) with therebetween
Form relative closure is cast into die cavity, and feeding-passage then is connected into high injection material equipment again, to utilize major ingredient equipment phase mould
The die casting raw material (molten metal generally melted) of injection liquid or semi liquid state in tool, due to being led by charging secondary flow road 2 and charging
The charging runner that runner 1 is formed appears similar to the feeding-passage of comb teeth-shaped (i.e. on the whole：Equivalent to the charging of comb shape
Mode), it is ensured that die casting raw material equably can enter die cast intracavitary by rear die casting shaping area c front side, and most
Filled uniformly with eventually according to the structural form in molding runners area and forming cavity, so as to can effectively ensure that the drain pan of shaping is cast
The stability (the controllable margin of tolerance ± 0.15mm) of the flatness of part and the accuracy of thickness (the controllable margin of tolerance for ±
0.03mm), the dimensional stability of casting finished products is improved；Simultaneously as charging secondary flow road 2 is put down with charging sprue 1 using same
The mode of EDS maps, be not between the two in traditional moulds because two parts by the way of the tilt distribution and caused by it is high
Degree is poor, therefore can reduce the dosage of die casting raw material and the yield of waste material, is advantageous to save die casting raw material, reduces module drain pan
Manufacturing cost.
, can to ensure to be filled in the die casting raw material of die cast intracavitary under the effect of the pressure during coagulation forming
Clout to be extruded provides the circulation passage of abundance, on rear mould assembly b die joint and positioned at rear die casting shaping area c's
The left and right sides also offers several discharge secondary flows road f respectively, and discharge secondary flow road f is connected with rear die casting shaping area c.By
This, the clout being extruded can be filled in discharge sprue d and discharge secondary flow road f, so as to the overall matter for guarantee mould casting
Dose-effect fruit provides safeguard.Preferably, each discharge sprue d in the present embodiment and each discharge secondary flow road f
Combined by a cinder ladle area 19 and at least one exhaust passage being connected with cinder ladle area 19 or deslagging exhaust passage 20, with
Just in clout during being extruded, part clout can be stored in cinder ladle area 19 in the presence of exhaust passage with shape
Into cinder ladle, another part clout then can be discharged to designated area by deslagging exhaust passage 20.
To shorten the flow distance of raw material to greatest extent, ensure that raw material can enter evenly into die cast intracavitary
Between the extended line for expecting the left and right edge of central point and rear die casting shaping area c of the passage on rear mould assembly c die joint
Vertical range is preferably controlled between 120mm-150mm (i.e.：The control the distance between from the center line of feeding-passage to product sideline
Between 120mm-150mm).
To optimize the performance of whole mould to greatest extent, on rear mould assembly b die joint and it is located at discharge sprue d
Rear side be further opened with deslagging grate flow channel area g, deslagging grate flow channel area g includes at least two rear molds for being in left and right parallel arranged
Deslagging teeth groove arranges 3 (the present embodiment is preferably three), between adjacent two rear mold deslagging teeth groove row 3 formed with a rear mold every
From arm 4, correspondingly, the preceding mould deslagging that contraposition is embedded in rear mold deslagging teeth groove row 3 is provided with preceding mould assembly a die joint
Double wedge row 5, between adjacent two preceding mould deslagging double wedges rows 5 formed with one isolate with rear mold the position relatively of arm 4 and with rear mold every
Preceding mould isolation channel 6 from arm 4 in stacked distribution up and down, rear mold deslagging teeth groove row 3 are connected with discharge sprue d.Thus, utilize
Cooperation and rear mold between rear mold deslagging teeth groove row 3 and preceding mould deslagging double wedge row 5 are isolated between arm 4 and preceding mould isolation channel 6
Coordinate, a deslagging exhaust block for being similar to segmented version can be formed in mould and positioned at discharge sprue d posterior region,
The clout for being advantageous to be extruded can form cinder ladle in deslagging grate flow channel area g by equably die cast, avoid the occurrence of
Traditional moulds are because of the deslagging exhaust block using a monoblock and the problem of easily cause cinder ladle partially thick and because clout can not be equal
Extrude evenly out of forming cavity and easily mould casting size it is unstable, it is yielding, the problems such as cinder hole be present.
As a preferred scheme, each rear mold deslagging teeth groove row 3 of the present embodiment is mutual in front and rear by several
The deslagging teeth groove being distributed side by side combines, and correspondingly, the double wedge in preceding mould deslagging double wedge row 5 is also using the arrangement point of relative position
Cloth form, to ensure that the clout being extruded can be equably cast into cinder ladle.
To optimize the structure of whole mould to greatest extent, the preceding mould assembly a of the present embodiment includes opening up on a die joint
There is front cavity 8 of the preceding mould bases 7 and one of die cavity before one in preceding die cavity (can be improved by structure and function, preceding
Drive device is set in mould bases so that front cavity 8 can move up and down in preceding die cavity, to mould during so as to meet actual use
The adjustment control demand of tool), preceding mold forming area e is opened on the die joint of front cavity 8, and preceding mould isolation channel 6 and preceding mould deslagging are convex
Tooth row 5 then may be contained within the die joint of preceding mould bases 7 (both can be also installed in by independent driving part before on mould bases 7, with
Meet the actual use demand to the adjustment control of mould)；Mould assembly b includes the rear mold that a die joint offers die cavity after one afterwards
Frame 9 and one is flush-mounted in the rear cavity 10 of rear mold intracavitary, and rear die casting shaping area c, charging runner and discharge sprue d are opened up
In on the die joint of rear cavity 10, and deslagging grate flow channel area g is then arranged on the die joint of rear mould bases 9；Meanwhile feeding-passage
Then include the barrel 11 being arranged at along the vertical direction in preceding mould bases 7 and the spreader being arranged at along the vertical direction in rear mould bases 9
12, the sleeve of spreader 12 is connected in barrel 11 and by charging sprue 1 with barrel 11.Thus, by preceding mould assembly a and
Mould assembly b structure is improved afterwards, it is assembled by multiple parts, to provide structure base for the specific regulation and control control to mould
Plinth.
In addition, for ease of mould is assemblied in the equipment such as die casting machine, while it is easy to operating personnel can be molded
Casting takes out out of mould, and the rear mould assembly b of the present embodiment also includes being arranged at the lower section of rear mould bases 9 and around rear mould bases 9
The support block 13 of edge distribution, the support column 14 of lower surface central area for being installed in rear mould bases 9, the top that is set on support column 14
Pin bottom plate 15 and thimble panel 16 and bottom are installed on thimble panel 16 and top is sequentially through rear mould bases 9, rear mold
The thimble 17 that chamber and rear cavity 10 are distributed, meanwhile, one is equiped with Ejector Retainer Plate 15 thimble 17 is driven by thimble panel 16
The thimble driver 18 to be moved up and down relative to Ejector Retainer Plate 15.Thus, then can be to mould using support block 13 and support column 14
Main body provide a supporting role, be easy to the assembling of the equipment such as mould and die casting machine to use, and by the control to thimble 17, then may be used
The exercise effect moved up and down using it, after die casting raw material die cast, jacked up from the side of mould casting, in order to
Operating personnel quickly removes mould casting.
It is relative to be formed therebetween for front cavity 8 and rear cavity 10 can be enable to carry out accurate mould assembling action
The casting forming cavity of closing, the edge of the die joint of rear cavity 10 is provided with positioning convex 21, correspondingly, in front cavity 8
The edge of die joint offer for the chimeric detent 22 of the contraposition of positioning convex 21.
Based on a kind of above-mentioned die-casting forming die, with reference to shown in Fig. 8 to Figure 12, the embodiment of the present invention additionally provides one kind
The compression molding process of LED display module drain pan, it mainly utilizes a kind of die casting of above-mentioned LED display module drain pan
Mould obtains the method for module drain pan casting, and it should at least be included in the high pressure effect that high pressure major ingredient equipment is provided
Down by feeding-passage and charging runner to die cast intracavitary filling liquid or the die casting raw material (such as molten metal) of semi liquid state
And under pressure (i.e.：Preceding mould assembly a and rear mould assembly b is carried out in the presence of matched moulds compression) make die casting raw material coagulation forming
For the die cast process S2 of drain pan casting (its concrete structure is referring to Fig. 9 and Figure 10 and Fig. 2).Thus, mould sheet can be based on
The design feature of body can effectively ensure mould casting (i.e.：Semi-finished product) the stability of flatness and the accuracy of thickness.In reality
In the practical implementation of border technique, die cast process S2 technological parameter is preferably：1st, mold temperature control 250 DEG C-
280 DEG C, it so can effectively improve the stability of casting flatness；2nd, mold clamping force control is in 1800KN-2500KN, such energy
Enough effective guarantee product thicknesses, direction, size etc.；3rd, the firing rate of high injection material equipment is controlled in 5-8m/s, can so be subtracted
The deflection of few product simultaneously improves the stability of its flatness.
For final module drain pan can be obtained (i.e.：Finished product), the technological process of the present embodiment is additionally included in die cast
The die casting control process S1 that carries out before process S2 and what is sequentially carried out after die cast process S2 remove die casting hair
Pierce process S3, CNC manufacturing procedure S4, epithelium process S5 and the process S6 that dusts；Wherein,
Die casting controls the process S1 to be：Above-mentioned mould is combined and is fixed according to certain rule and position
After in the equipment of such as die casting machine, control preceding mould assembly a and rear mould assembly b is relatively closed (i.e.：Carry out the matched moulds control of mould
System) with form relative closure therebetween it is cast into die cavity, charging runner and discharge sprue d；
CNC manufacturing procedures S3 is：Control preceding mould assembly a and rear mould assembly b are relative to be opened (i.e.：Carry out the die sinking control of mould
System), the appearance profile edge of drain pan casting is processed finishing with CNC, to ensure the degree of accuracy of casting appearance profile；
The die casting burr process S4 is gone to be：Drain pan casting is jacked up using the grade of thimble 17 accessory to take out the bottom of coagulation forming
Shell casting, the burr at the hole position burr and thimble impression on drain pan cast(ing) surface is then removed, to prevent casting from assembling
Scratch is caused to miscellaneous part in journey or scratched；
Epithelium process S5 is：Drain pan casting (it can be found in shown in Figure 11 and Figure 12 and Fig. 2) after finishing is subjected to table
Face phosphorating treatment, to improve the corrosion resistance of drain pan casting, inoxidizability and surface adhesion force；
Process of dusting S6 is：To the drain pan casting by surface granosealing dust processing (such as plating, oxidation, electricity
Swimming or oil spout etc. technique).
Thus, the design feature of the mould based on the present embodiment, in the die cast step of module drain pan, traditional handicraft
Need only remove die casting hair together by twice burring process, the technique of the present embodiment because of the defects of using present in mould
Perverse technique；Simultaneously, it is possible to reduce product materials, need not move through numerous and diverse process cans such as later stage CNC processing significantly
Reduce the bad loss of product, so as to save the material cost of product, cost of labor and cost of transportation, the shape of product not by
Influence, also ensure that the stability of product plane degree and the accuracy of thickness；Based on this, its processing step is by 10 traditional works
Sequence shorten to 6 present procedures, has greatly saved the time cost of product and has improved production efficiency.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, every utilization
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
1. a kind of die-casting forming die of LED display module drain pan, the preceding mould that it is included each other in stacked distribution up and down is total
Into with rear mould assembly, it is characterised in that：After die casting shaping area, one are located at after offering one on the die joint of mould assembly after described
The front side of die casting shaping area and the charging runner being connected with rear die casting shaping area and several be located at rear die casting into
The rear side in type area and the discharge sprue being connected with rear die casting shaping area, the charging runner include a plane projected shape
In the "T"-shaped charging sprue of class and several mutual horizontal streams for being distributed in parallel arranged and sprue being fed respectively
The charging secondary flow road that Dao Qu is connected with rear die casting shaping area, the charging sprue and charging secondary flow road are in same plane
It is interior；The preceding mold forming area of a position relative with rear die casting shaping area, the preceding mould are offered on the die joint of the preceding mould assembly
Between shaping area and rear die casting shaping area die cavity is cast into formed with one；Set on the preceding mould assembly and/or on rear mould assembly
It is equipped with a feeding-passage being connected with charging sprue.
A kind of 2. die-casting forming die of LED display module drain pan as claimed in claim 1, it is characterised in that：After described
Several discharge secondary flow roads, institute are also offered respectively on the die joint of mould assembly and positioned at the left and right sides of rear die casting shaping area
Discharge secondary flow road is stated with rear die casting shaping area to be connected.
A kind of 3. die-casting forming die of LED display module drain pan as claimed in claim 1, it is characterised in that：It is described enter
Hanging down between the extended line at the left and right edge of central point and rear die casting shaping area of the material passage on the die joint of rear mould assembly
Straight distance is 120mm-150mm.
4. a kind of die-casting forming die of LED display module drain pan as claimed any one in claims 1 to 3, its feature
It is：Deslagging grate flow channel area is further opened with after described on the die joint of mould assembly and on rear side of discharge sprue, it is described
Deslagging grate flow channel area includes at least two and arranged in the rear mold deslagging teeth groove of left and right parallel arranged, adjacent two rear mold rows
Isolate arm formed with a rear mold between slag teeth groove row, being provided with contraposition on the die joint of the preceding mould assembly is embedded in rear mold deslagging
Preceding mould deslagging double wedge in teeth groove row is arranged, and isolates arm with rear mold formed with one between adjacent two preceding mould deslagging double wedges rows
Isolate preceding mould isolation channel of the arm in stacked distribution up and down, the rear mold deslagging teeth groove row and discharge sprue with respect to position and with rear mold
It is connected.
A kind of 5. die-casting forming die of LED display module drain pan as claimed in claim 4, it is characterised in that：Each institute
Rear mold deslagging teeth groove row is stated to combine in the front and rear deslagging teeth groove being distributed side by side each other by several.
A kind of 6. die-casting forming die of LED display module drain pan as claimed in claim 4, it is characterised in that：Before described
Mould assembly includes offering the preceding mould bases of die cavity and a front cavity in preceding die cavity before one on a die joint, before described
Mold forming area is opened on the die joint of front cavity, and the preceding mould isolation channel and preceding mould deslagging double wedge row may be contained within preceding mould bases
On die joint；
Mould assembly includes a die joint and offers the rear mould bases of die cavity after one and a rear mold for being flush-mounted in rear mold intracavitary after described
Benevolence, rear die casting shaping area, charging runner and the discharge sprue are opened on the die joint of rear cavity, the deslagging row
Flow channel area is arranged on the die joint of rear mould bases；
The feeding-passage includes the barrel being arranged at along the vertical direction in preceding mould bases and is arranged at rear mould bases along the vertical direction
Interior spreader, the spreader sleeve are connected in barrel and by charging sprue with barrel.
A kind of 7. die-casting forming die of LED display module drain pan as claimed in claim 6, it is characterised in that：After described
The support block for the edge distribution that mould assembly also includes being arranged at the lower section of rear mould bases and surrounding rear mould bases, the following table for being installed in rear mould bases
The support column of face central area, the Ejector Retainer Plate being set on support column and thimble panel and bottom are installed on thimble panel
And top is equiped with one on the Ejector Retainer Plate and passed through sequentially through the thimble of rear mould bases, rear die cavity and rear cavity distribution
Thimble panel drives the thimble driver that thimble moves up and down relative to Ejector Retainer Plate.
A kind of 8. die-casting forming die of LED display module drain pan as claimed in claim 6, it is characterised in that：After described
The edge of the die joint of die is provided with positioning convex, and the edge of the die joint of the front cavity is offered for positioning convex
The chimeric detent of contraposition.
A kind of 9. compression molding process of LED display module drain pan, it is characterised in that：It is to appoint using in claim 1-8
The die-casting forming die of LED display module drain pan described in one a kind of obtains the method for module drain pan casting, and it includes
High pressure effect under by feeding-passage and charging runner to the die casting raw material of die cast intracavitary filling liquid or semi liquid state simultaneously
Make the die cast process that die casting raw material coagulation forming is drain pan casting under pressure.
A kind of 10. compression molding process of LED display module drain pan as claimed in claim 9, it is characterised in that：It is also wrapped
Include the die casting control process carried out before die cast process and the CNC sequentially carried out after die cast process
Manufacturing procedure, go die casting burr process, epithelium process and process of dusting；Wherein,
Die casting control process for control preceding mould assembly and rear mould assembly it is relatively closed with formed be cast into die cavity, charging runner
With discharge sprue；
CNC manufacturing procedures is control preceding mould assembly and the relative opening of rear mould assembly, by the appearance profile edge CNC of drain pan casting
It is processed finishing；
Die casting burr process is gone to take out the drain pan casting of coagulation forming, removes the hole position burr on drain pan cast(ing) surface；
Epithelium process is that the drain pan casting after finishing is carried out into surface granosealing；
Process of dusting is to carrying out processing of dusting by the drain pan casting of surface granosealing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670529.8A CN107457383A (en) | 2017-08-08 | 2017-08-08 | A kind of die-casting forming die and compression molding process of LED display module drain pan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670529.8A CN107457383A (en) | 2017-08-08 | 2017-08-08 | A kind of die-casting forming die and compression molding process of LED display module drain pan |
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| CN107457383A true CN107457383A (en) | 2017-12-12 |
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| CN201710670529.8A Pending CN107457383A (en) | 2017-08-08 | 2017-08-08 | A kind of die-casting forming die and compression molding process of LED display module drain pan |
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| CN109036167A (en) * | 2018-09-14 | 2018-12-18 | 东莞市和镁五金有限公司 | A kind of LED display bottom case and its manufacturing process |
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