CN102699248A - Bimetal composite cold header capable of separating blank from return oil - Google Patents
Bimetal composite cold header capable of separating blank from return oil Download PDFInfo
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- CN102699248A CN102699248A CN2012101971579A CN201210197157A CN102699248A CN 102699248 A CN102699248 A CN 102699248A CN 2012101971579 A CN2012101971579 A CN 2012101971579A CN 201210197157 A CN201210197157 A CN 201210197157A CN 102699248 A CN102699248 A CN 102699248A
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Abstract
The invention relates to a bimetal composite cold header capable of separating a blank from return oil. The bimetal composite cold header comprises a sliding block, a lathe body, a trimming die, a concave die, a copper wire cropping mechanism and a silver wire cropping mechanism. The bimetal composite cold header is characterized in that a blank slideway (7) and a return oil slideway (8) separated from each other are arranged at a lower part (21) of the lathe body, an oil removal fence (9) is arranged between the concave die and the trimming die and is used for enclosing a space between the concave die and the trimming die so as to form an upsetting space (10) capable of blocking the pollution of engine oil, the blank slideway is communicated with an outlet at the lower end of the oil removal fence, and the return oil slideway is positioned below the oil removal fence and is used for containing the engine oil intercepted by the outer surface of the oil removal fence. The oil removal fence can prevent lubricating oil in a kinematic pair of the cold header from splashing into the upsetting space in the work process. The blank falls off due to the action of gravity and slides out from the blank slideway so as to be separated from the cold header in a clean and oilless state. According to the bimetal composite blank upsetted by using the technology provided by the invention, deoiling cleaning procedure is omitted, and the sticky force of a bimetal bonding surface is also improved.
Description
Technical field
The present invention relates to a kind of compound cold headers of bimetallic that can conductive material copper, silver or its alloy upsetting be become the appliance contact of rivet-like, relate in particular to a kind of compound cold headers of bimetallic that can blank and oil return be isolated.
Background technology
In the electrical equipment manufacturing, being widely used in various switches, contactor, relay, the range multiplier is referred to as the accessory of " contact ".The contact is rivet-like, in electrical equipment, uses in pairs, and when pair of contact contacted, this just became conductive path to the contact; When this separated the contact, this just became conduction to the contact and opens circuit.In history, in the long time, use fine silver to make the contact.Be accompanied by the birth of bimetallic complex technique, copper, silver (containing alloy) composite contact have just become the main flow accessory of electric apparatus manufacture.Composite contact is to be the contact of main material with copper, although the ag material proportion is extremely low, its performance and whole fine silver contact are as good as, and its cost is merely number/one of whole fine silver contact.The compound cold headers of bimetallic are production equipments of upsetting copper, silver-colored composite contact.
Like a patent No. is the compound automatic machine of a kind of bimetallic cold-heading so the Chinese utility model patent " the compound automatic machine of bimetallic cold-heading " of ZL03229298.8 (notification number is CN2610472Y) has disclosed, it by motor, frame, be arranged on the frame and and formed by two-wire pay-off, two-wire cutoff device, mould shifting device, upsetting device and the liftout attachment of drive of motor through transmission mechanism.The two-wire pay-off is that two kinds of metal material wire rods are sent into the two-wire cutoff device through drawing-inroller; The two-wire cutoff device is that two kinds of metal material wire rods of being positioned are cut off, deliver to mould before, for upsetting is prepared; The upsetting device comprises just upsets and multiple the rammer, just upsets and makes the workpiece initial set, and multiple the rammer makes two kinds of metal wire rod composite deformations become composite contact; Mould shifting device is with first upsetting die and the mould of upsetting again moves up and down, and makes it to accomplish initial set and combined shaping; Liftout attachment is that the workpiece after upsetting is accomplished is released mould.Good effect is: can two kinds of different metallic composite deformation under cold conditions be become composite contact, practice thrift noble metal, reduce the contact cost, performance reaches former whole noble metal performance.
The compound cold headers of bimetallic that the current contact manufacturing industry is used all use the lubricant of machine oil as each kinematic pair, and are still without exception.Machine oil extrudes from lubricating oil pump, injects each rubbing surface and is used for satisfying lubricating requirement, and the machine oil that injects rubbing surface oozes out from the rubbing surface slit and becomes oil return and get into lubricating oil pump once more.In the compound cold headers of bimetallic, following from pressure oil to the oil return again to the process of pressure oil as the machine oil of lubricant, going round and beginning again.In this cyclic process, quantitatively cut off as raw-material copper cash, silver-colored line, through upsetting, be combined into the blank of rivet-like, oil return can be splashed into the upsetting space under the extruding of each kinematic pair, skid off from same slideway with blank.Slideway has certain-length, and its terminal drop oil screen face can separate blank with oil return.Oil return is dripped from drop oil screen hole; The landing from the drop oil screen face of the blank of being infected with the machine oil film crashes into the finished product case.This blank desires to become the contact of electric apparatus manufacture, then must remove the oil film on it through the de-oiling treatment process.The copper, silver (the containing alloy) composite contact that use the compound cold headers of above-mentioned bimetallic to produce are infected with owing to machine oil, and the bonding force of copper, silver (containing alloy) faying face is unstable.Its influence factor has three: organic oil is splashed into faying face in the upsetting process; The machine oil oil film of being infected with on the blank infiltrates faying face; When blank is done the de-oiling processing, solvent and temperatures involved faying face.
Although the user of the compound cold headers of bimetallic has very high expectation to " oil removal upsetting " equipment; But do not end so far; The inventor does not retrieve the report that relevant devices manufacturing enterprise pays close attention to " oil removal upsetting " technology yet, does not retrieve the patent documentation of " oil removal upsetting " technical elements yet.Thereby existing composite contact production still rests on the conventional art of " contaminated product upsetting ", " the back de-oiling of upsetting ".
Summary of the invention
Technical problem to be solved by this invention is the compound cold headers of bimetallic that a kind of novel structure is provided to above-mentioned prior art present situation; These cold headers provide the upsetting space of cleaning for copper cash and silver-colored line; Guarantee that product and machine oil that upsetting goes out isolates fully, prevent that product is by oil pollution.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of compound cold headers of bimetallic that can blank and oil return be isolated; Include slide block, lathe bed, punch die, die, copper cash cutting means and silver-colored line cutting means, die connects firmly the front portion at lathe bed; Slide block retrained by the guide rail on the lathe bed and only constitute can before and after the moving sets of slippage, punch die connects firmly on slide block; Copper cash cutting means and lathe bed are formed the moving sets of ability left and right sides slippage; This cutter can quantitatively cut off the copper cash as one of raw material; And deliver to the die cavity place of die; Silver line cutting means and lathe bed composition moving sets, this cutter can quantitatively cut off two silver-colored line as raw material, and delivers to the die cavity place of die; It is characterized in that: the bottom of said lathe bed is provided with blank slideway independent of each other and oil return slideway; Be provided with the oil removal fence that is surrounded by the several piece plate between said die and the punch die; This oil removal fence is crowded around the upsetting space that formation can intercept oil pollution with the space between die and the punch die; In this upsetting space; Said copper cash and silver-colored line are by punch die and the die upsetting compound blank that becomes of exerting pressure; Said blank slideway is communicated with the blank that falls from the upsetting space in order to accept with the lower end outlet of oil removal fence, and said oil return slideway is positioned at the below of oil removal fence in order to accept attached to the outer surface of oil removal fence and the dirty machine oil of taking advantage of a situation.
Above-mentioned oil removal fence has rear wall, slide base face, left side wall and right side wall at least; Left side wall and right side wall are positioned at the left and right sides of rear wall and extend forward; The base face that slips is positioned at the below of rear wall and is connected with the base of left side wall and right side wall; Said die is between left side wall and right side wall; The top of said rear wall has the breach that supplies punch die to pass, and said slide base face stretches in the blank slideway and connects firmly with the bottom surface of blank slideway, and the edge, front of left side wall and right side wall then contacts with the interior antetheca of lathe bed; Copper cash cutting knife in the said copper cash cutting means is being wiped the upper edge of right side wall and is being passed, and the upper edge that the silver-colored line cutting knife in the said silver-colored line cutting means is being wiped left side wall is passed.
The rear wall of oil removal fence mainly plays the machine oil that stops in the moving sets and is splashed in the course of the work in the upsetting space; And left side wall and right side wall prevent on the one hand that machine oil from splashing and get into the upsetting space between die and the punch die; The blank bullet oil removal fence of escaping out that spouts further avoids blank to speckle with machine oil when preventing the upsetting moulding on the other hand.
The Way out of above-mentioned blank slideway and oil return slideway is reverse each other, and wherein, the front side wall of lathe bed is stretched out in the outlet of blank slideway forward, and the rear wall of lathe bed is stretched out in the outlet of oil return slideway backward, and the oil return slideway is positioned at the below of blank slideway.This blank slideway and oil return slideway set-up mode are the most reasonable, can guarantee that more blank can be by oil pollution.
Certainly the blank slideway also can adopt following mode to be provided with the oil return slideway: the Way out of above-mentioned blank slideway and oil return slideway is identical; It is the front side wall that lathe bed is all stretched out in the outlet of blank slideway and oil return slideway forward; The slideway of oil return simultaneously is positioned at the below of blank slideway, and both are in different levels.The Way out of above-mentioned blank slideway and oil return slideway is mutually certain angle and distributes, and wherein, the front side wall of lathe bed is stretched out in the outlet of blank slideway forward, and the outlet of said oil return slideway extends laterally the left side wall or the right side wall of lathe bed.In sum, the outlet of blank slideway and oil return slideway can be equidirectional, and also different direction can also be angled distribution, arranges flexibly as required.
Be effective machine oil that reclaims, ingenious storage machine oil, the bottom of above-mentioned lathe bed has pedestal; Has oil storage pool in the pedestal; The upper surface of pedestal is outer low Oil Guide inclined-plane between senior middle school all around, and the upper surface of pedestal is provided with the oil return seat, and the inner chamber of oil return seat is communicated with the interior oil storage pool of pedestal; Have oil return opening on the sidewall of oil return seat, the lubricating oil pump that the machine oil in the oil storage pool is extracted at the rear portion of pedestal out.
The outer surface of oil removal fence can stop effectively that machine oil gets in it,, and then is dripped attached to the outer surface of oil removal fence and take advantage of a situation dirtyly by its machine oil that stops; Be dropped on the oil return slideway; Along the inclined-plane of oil return slideway, these machine oil trickle to the upper surface of pedestal, and machine oil gets in the oil storage pool through the oil return opening of oil return seat along the Oil Guide inclined-plane; The machine oil of these backflows is pressed into oil piping system once more through lubricating oil pump, and the machine oil that recycles has satisfied the lubricating requirement of each rubbing surface.
Compared with prior art, the invention has the advantages that: in the upsetting space that the oil removal fence is surrounded, the upsetting of die and punch die is moved two kinds of metal composite; Upsetting becomes the blank of rivet-like, and the oil removal fence can stop effectively that the machine oil in the moving sets is splashed in the upsetting space in the course of the work, and the machine oil that is stopped is taken advantage of a situation dirty along oil removal fence outer surface; Be dropped on the oil return slideway, and blank falls under the gravity effect, sink into the blank slideway through the lower end outlet of oil removal fence; Skid off from the blank slideway; The state that does not have oil with cleaning breaks away from the compound cold headers of bimetallic, and this clean blank can directly assemble electrical equipment, has saved de-oiling matting of the prior art; So not only practice thrift man-hour, saved the consumption of de-oiling solvent, and improved the bonding force of bimetallic combination face.Compared with prior art, the present invention has reached and has improved the quality of products, reduces production costs and triple purposes of energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the complete machine structure stereogram of the embodiment of the invention;
Fig. 2 is the complete machine structure vertical view of the embodiment of the invention;
Fig. 3 is the location drawing (preceding side-looking) of oil removal fence in the embodiment of the invention, blank slideway, oil return slideway and lathe bed bottom;
Fig. 4 is the location drawing (rear side viewing) of oil removal fence in the embodiment of the invention, blank slideway, oil return slideway and lathe bed bottom;
Fig. 5 is the location drawing (analysing and observe) of oil removal fence, blank slideway, oil return slideway and lathe bed bottom in the embodiment of the invention;
Fig. 6 is the stereogram (rear side viewing) of oil removal fence and blank slideway in the embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Shown in Fig. 1～6, be a preferred embodiment of the present invention.
A kind of compound cold headers of bimetallic that can blank and oil return be isolated include slide block 1, lathe bed 2, punch die 3, die 4, copper cash cutting means 5 and silver-colored line cutting means 6, blank slideway 7, oil return slideway 8 and oil removal fence 9.
Die 4 connects firmly in the front portion of lathe bed 2, and both and ground are static relatively.Slide block 1 is retrained by the guide rail on the lathe bed 2, and both constitute moving sets, the static relatively lathe bed 2 of slide block 1 only can before and after the moving sets of slippage, punch die 3 connects firmly on slide block 1.Copper cash cutting means 5 and lathe bed 2 are formed the moving sets of ability left and right sides slippages; This copper cash cutting means 5 can quantitatively cut off the copper cash as one of raw material; And deliver to the die cavity place of die 4; Silver line cutting means 6 is formed moving sets with lathe bed 2, and this silver line cutting means 6 can quantitatively cut off two silver-colored line as raw material, and delivers to the die cavity place of die 4; Copper cash cutting knife 51 in the copper cash cutting means 5 is opposite with the direction of motion of the silver-colored line cutting knife 61 in the silver-colored line cutting means 6, and the direction of motion of two cutting knifes 51,61 is vertical with the direction of motion of slide block 1.The bottom 21 of lathe bed 2 is provided with blank slideway 7 independent of each other and oil return slideway 8.
More than be the conventional structure of the compound cold headers of bimetallic, the same with other machineries, the rubbing surface of the compound cold headers of bimetallic will use machine oil to do lubricant inevitably, thereby makes the upsetting blank completely cut off machine oil to be infected with and to be top priority of the present invention.
Realize the isolated of blank and machine oil, the space of cleaning not only will be arranged when upsetting, also will independently transfer passage be set in falling process for the blank after the completion upsetting.In the preferred embodiments of the present invention; Be provided with the oil removal fence 9 that is surrounded by the several piece plate between die 4 and the punch die 3; This oil removal fence 9 is crowded around the space between die 4 and the punch die 3, and formation can intercept the upsetting space 10 of oil pollution, makes it to become the clean that can intercept oil pollution.In this upsetting space 10; Copper cash and silver-colored line are exerted pressure by punch die 3 and die 4 and are combined into blank; Blank slideway 7 is communicated with the blank that falls from the upsetting space in order to accept with the lower end outlet of oil removal fence 9, and oil return slideway 8 is positioned at the below of oil removal fence 9 in order to accept attached to the outer surface of oil removal fence 9 and the dirty machine oil of taking advantage of a situation.Be not difficult to find out containing thing and can not obscure in the present embodiment in blank slideway 7 and the oil return slideway 8.
The bottom of lathe bed 2 has pedestal 11; Has oil storage pool in the pedestal 11; The upper surface of pedestal 11 is outer low Oil Guide inclined-plane 12 between senior middle school all around, and the upper surface of pedestal 11 is provided with oil return seat 13, and the inner chamber of oil return seat 13 is communicated with pedestal 11 interior oil storage pools; Have oil return opening 14 on the sidewall of oil return seat 13, the lubricating oil pump 15 that the machine oil in the oil storage pool is extracted at the rear portion of pedestal 11 out.
The operation principle and the course of work of present embodiment are following:
Copper cash cutting knife 51 in the copper cash cutting means 5 will quantitatively cut off as the copper cash of one of raw material, and delivers to the die cavity place of die 4; Silver-colored line cutting knife 61 in the silver line cutting means 6 will quantitatively cut off as two silver-colored line of raw material; And deliver to die 4 die cavity places; This moment, slide block 1 was together with 3 moving linearlies of the punch die on it; Punch die 3 is accomplished the upsetting to copper cash, silver-colored line in progressively near the process of die 4, copper cash, silver-colored line are combined into one, and the shape after compound is confirmed by the die cavity of die 4.The upsetting process is in the upsetting space 10 that oil removal fence 8 is crowded around, to accomplish, thereby the blank that upsetting is shaped can be infected with by machine oil.After this blank demoulding, under the gravity effect, fall, the lower end outlet through oil removal fence 9 is sinked into blank and is slided 7, skids off from the bottom surface of blank slideway 7, and the state that does not have oil with cleaning breaks away from the compound cold headers of bimetallic.
The outer surface of oil removal fence 9 can stop effectively that machine oil gets in it; By its machine oil that stops attached to the outer surface of oil removal fence 9 and take advantage of a situation dirty; And then drip, be dropped on the oil return slideway 8, along the inclined-plane of oil return slideway 8; These machine oil trickle to the upper surface of pedestal 11; Oil return opening 14 through oil return seat 13 gets in the oil storage pool along Oil Guide inclined-plane 12 afterwards, and the machine oil of these backflows is pressed into oil piping system once more through lubricating oil pump 15, and the machine oil that recycles has satisfied the lubricating requirement of each rubbing surface.
Claims (6)
1. an ability compound cold headers of bimetallic that blank and oil return are isolated include slide block (1), lathe bed (2), punch die (3), die (4), copper cash cutting means (5) and silver-colored line cutting means (6), and die (4) connects firmly the front portion in lathe bed (2); Slide block (1) retrained by the guide rail on the lathe bed (2) and only constitute can before and after the moving sets of slippage, punch die (3) connects firmly on slide block (1); Copper cash cutting means (5) and lathe bed (2) are formed the moving sets of ability left and right sides slippage; This copper cash cutting means (5) can quantitatively cut off the copper cash as one of raw material; And deliver to the die cavity place of die (4); Silver line cutting means (6) is formed moving sets with lathe bed (2), and this silver line cutting means (6) can quantitatively cut off two silver-colored line as raw material, and delivers to the die cavity place of die (4); It is characterized in that: the bottom (21) of said lathe bed (2) is provided with blank slideway independent of each other (7) and oil return slideway (8); Be provided with the oil removal fence (9) that is surrounded by the several piece plate between said die (4) and the punch die (3); This oil removal fence (9) is crowded around the upsetting space (10) that formation can intercept oil pollution with the space between die (4) and the punch die (3); In this upsetting space (10); Said copper cash and silver-colored line are exerted pressure by punch die (3) and die (4) and are combined into blank; Said blank slideway (7) is communicated with the blank that falls from the upsetting space in order to accept with the lower end outlet of oil removal fence (9), and said oil return slideway (8) is positioned at the below of oil removal fence (9) in order to accept attached to the outer surface of oil removal fence (9) and the dirty machine oil of taking advantage of a situation.
2. the compound cold headers of bimetallic according to claim 1; It is characterized in that: said oil removal fence (9) has rear wall (91), slide base face (92), left side wall (93) and right side wall (94) at least; Left side wall (93) and right side wall (94) are positioned at the left and right sides of rear wall (91) and extend forward; The base face (92) that slips is positioned at the below of rear wall (91) and is connected with the base of left side wall (93) with right side wall (94); Said die (4) is positioned between left side wall (93) and the right side wall (94); The top of said rear wall (91) has the breach (95) that supplies punch die (3) to pass, and said slide base face (92) stretches in the blank slideway (7) and connects firmly with the bottom surface of blank slideway (7), and the edge, front of left side wall (93) and right side wall (94) then contacts with the interior antetheca of lathe bed (2); Copper cash cutting knife (51) in the said copper cash cutting means (5) is being wiped the upper edge of right side wall (94) and is being passed, and the silver-colored line cutting knife (61) in the said silver-colored line cutting means (6) is being wiped the upper edge of left side wall (61) and passed.
3. the compound cold headers of bimetallic according to claim 1 and 2; It is characterized in that: said blank slideway (7) is reverse each other with the Way out of oil return slideway (8); Wherein, The front side wall of lathe bed (2) is stretched out in the outlet of blank slideway (7) forward, and the rear wall of lathe bed (2) is stretched out in the outlet of oil return slideway (8) backward, and oil return slideway (8) is positioned at the below of blank slideway (7).
4. the compound cold headers of bimetallic according to claim 1 and 2; It is characterized in that: said blank slideway (7) is identical with the Way out of oil return slideway (8); Be that blank slideway (7) all stretches out the front side wall of lathe bed (2) forward with the outlet of oil return slideway (8), oil return slideway (8) is positioned at the below of blank slideway (7) simultaneously.
5. the compound cold headers of bimetallic according to claim 1 and 2; It is characterized in that: said blank slideway (7) is mutually the certain angle distribution with the Way out of oil return slideway (8); Wherein, The front side wall of lathe bed (2) is stretched out in the outlet of blank slideway (7) forward, and the outlet of said oil return slideway (8) extends laterally the left side wall or the right side wall of lathe bed (2).
6. the compound cold headers of bimetallic according to claim 1 and 2; It is characterized in that: the bottom of said lathe bed (2) has pedestal (11); Pedestal has oil storage pool in (11); The upper surface of pedestal (11) is outer low Oil Guide inclined-plane (12) between senior middle school all around, and the upper surface of pedestal (11) is provided with oil return seat (13), and the inner chamber of oil return seat (13) is communicated with the interior oil storage pool of pedestal (11); Have oil return opening (14) on the sidewall of oil return seat (13), the lubricating oil pump (15) that the machine oil in the oil storage pool is extracted at the rear portion of pedestal (11) out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210197157.9A CN102699248B (en) | 2012-06-14 | 2012-06-14 | Bimetal composite cold header capable of separating blank from return oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210197157.9A CN102699248B (en) | 2012-06-14 | 2012-06-14 | Bimetal composite cold header capable of separating blank from return oil |
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| Publication Number | Publication Date |
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| CN102699248A true CN102699248A (en) | 2012-10-03 |
| CN102699248B CN102699248B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210197157.9A Expired - Fee Related CN102699248B (en) | 2012-06-14 | 2012-06-14 | Bimetal composite cold header capable of separating blank from return oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001357A (en) * | 2016-07-04 | 2016-10-12 | 宁波电工合金材料有限公司 | Processing platform for contact cold header |
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| JPS5844940A (en) * | 1981-09-11 | 1983-03-16 | Kawasaki Yukou Kk | Hydraulic forging press |
| CN2120008U (en) * | 1992-01-01 | 1992-10-28 | 烟台市渤海水晶石加工厂 | Lubricating oil scavenger of machine tool for cutting crystal |
| CN2610472Y (en) * | 2003-03-10 | 2004-04-07 | 薛根涛 | Bimetal cold-heading compound automaton |
| CN201471758U (en) * | 2009-08-13 | 2010-05-19 | 江苏扬力集团有限公司 | Flange plate structure of press machine die-setting height adjusting mechanism |
| CN202701238U (en) * | 2012-06-14 | 2013-01-30 | 宁波市鄞州海鹰冷镦机械厂 | Thermometal composite cold heading machine capable of isolating blanks from return oil |
-
2012
- 2012-06-14 CN CN201210197157.9A patent/CN102699248B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844940A (en) * | 1981-09-11 | 1983-03-16 | Kawasaki Yukou Kk | Hydraulic forging press |
| CN2120008U (en) * | 1992-01-01 | 1992-10-28 | 烟台市渤海水晶石加工厂 | Lubricating oil scavenger of machine tool for cutting crystal |
| CN2610472Y (en) * | 2003-03-10 | 2004-04-07 | 薛根涛 | Bimetal cold-heading compound automaton |
| CN201471758U (en) * | 2009-08-13 | 2010-05-19 | 江苏扬力集团有限公司 | Flange plate structure of press machine die-setting height adjusting mechanism |
| CN202701238U (en) * | 2012-06-14 | 2013-01-30 | 宁波市鄞州海鹰冷镦机械厂 | Thermometal composite cold heading machine capable of isolating blanks from return oil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001357A (en) * | 2016-07-04 | 2016-10-12 | 宁波电工合金材料有限公司 | Processing platform for contact cold header |
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| CN102699248B (en) | 2014-08-13 |
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