CN102500756A - Upper sliding block pressing mechanism of powder forming machine - Google Patents

Upper sliding block pressing mechanism of powder forming machine Download PDF

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Publication number
CN102500756A
CN102500756A CN2011103761477A CN201110376147A CN102500756A CN 102500756 A CN102500756 A CN 102500756A CN 2011103761477 A CN2011103761477 A CN 2011103761477A CN 201110376147 A CN201110376147 A CN 201110376147A CN 102500756 A CN102500756 A CN 102500756A
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China
Prior art keywords
shoe
powder
ball screw
move
cylinder
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Granted
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CN2011103761477A
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Chinese (zh)
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CN102500756B (en
Inventor
冯金玉
潘学仁
冯怿周
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YANGZHOU HAILI PRECISION MACHINERY MANUFACTURING Co Ltd
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YANGZHOU HAILI PRECISION MACHINERY MANUFACTURING Co Ltd
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Priority to CN201110376147.7A priority Critical patent/CN102500756B/en
Publication of CN102500756A publication Critical patent/CN102500756A/en
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Abstract

The invention relates to an upper sliding block pressing mechanism of a powder forming machine. The upper sliding block pressing mechanism comprises an upper sliding block ball head screw adjusting mechanism, a hydraulic cushion pressure display mechanism, a protective demoulding mechanism, a synchronous pressing and final pressurizing mechanism and a powder pressing and shifting mechanism. The invention provides the upper sliding block pressing mechanism of the powder forming machine, which has the advantages of reliability in forming products, and stable operation.

Description

The upper slide block of powder forming machine briquetting machine
Technical field
The present invention relates to a kind of upper slide block of powder forming machine briquetting machine, belong to powder metallurgical technology.
Background technology
The top shoe briquetting machine is the important component part of powder metallurgy, and the quality of its quality directly affects the quality of moulded products, and mainly there is following defective in existing top shoe briquetting machine:
1) can not reflect the press power that upper punch is downward, can't know the situation of change of press power in the die cavity, can not in time adjust the size of press power timely according to the actual conditions of goods, influence the product molding quality; And stuck in former the time when upper punch, because the existence of upper press power is difficult to out anti-car upper punch is deviate from, deviate to be easy to damage mechanism by force in former, cause damage;
2) often connect between traditional top shoe ball screw guiding mechanism and the top shoe air cylinder board through securing members such as screw threads; In connection procedure, make easily and produce axial deviation between the two; Cause mechanism that steadily phenomenon takes place in running not, influence the product molding quality and damage mechanism;
3) upper punch moves downward in the process and is directly driven by the upper cylinder piston; Owing to there is not the guiding of guiding mechanism; Run-off the straight easily in the motion process; And move together because of it tilts the upper cylinder piston to be rotated and drive associated components, the accumulation of this kind motion very easily causes clashing into each other between each parts of whole briquetting machine, is easy to cause mechanism to damage;
4) traditional synchronous briquetting machine is placed on the mechanism side, and by the control of compacting cam, compaction curve is merely approximate one section up and down, and the moulding of part goods is had certain influence;
5) for the goods of outer step in the moulding, in order to form the packing preferred article, it is that the centre is many, both sides are few that the dress powder requires; Traditional method is offered on former and is escaped the powder groove, and will pass through the repetition test adjustment, and its adjustment process is very loaded down with trivial details; And it is accurate inadequately; Improved production cost greatly, and its quality of goods that compacting is come out can not get effective assurance, uniformity is poor.
Summary of the invention
The present invention is directed to above-mentioned defective, purpose is to provide that a kind of product molding is reliable, the upper slide block of powder forming machine briquetting machine of mechanism's even running.
The technical scheme that adopts of the present invention is for this reason: comprise that top shoe ball screw guiding mechanism, hydraulic die cushion pressure display mechanism, protection mould emptier, compacting synchronously and final pressing mechanism, powder compaction move powder mechanism;
Wherein said top shoe ball screw guiding mechanism: the present invention includes top shoe connecting rod by the driving crank transmission; Top shoe connecting rod inner chamber is provided with its ball screw that moves up and down relatively, and the lower end of said ball screw connects the top shoe mechanism that comprises top shoe;
Hydraulic die cushion pressure display mechanism: be arranged between top shoe air cylinder board and the upper junction plate; Comprise that the hydraulic die cushion oil cylinder piston that is arranged on top shoe air cylinder board bottom reaches by the hydraulic die cushion oil pocket that forms between the two, the upper cylinder piston that is connected with upper junction plate is established in hydraulic die cushion oil cylinder piston bottom;
The protection mould emptier: comprise the upper cylinder cushion pad that is arranged on upper cylinder piston bottom and is connected with it, lead is established in the upper junction plate both sides, and lead is arranged in the top shoe mechanism, establishes the fairlead that cooperates with lead in the top shoe mechanism;
Suppress synchronously and final pressing mechanism: comprise a pair of synchronous fuel tank that is arranged on top shoe mechanism both sides, the bottom of synchronous fuel tank is established pressure adjustment screw rod, supporting seat and the concave template that links together successively;
Powder compaction is moved powder mechanism: be connected in the top shoe mechanism, comprise move the powder cylinder be arranged on move powder cylinder bottom move powder bar briquetting, move powder bar briquetting and be in the sliding block bottom and at first contact with former;
Realize being connected with alignment pin through establishing the piston alignment pin between top shoe ball screw guiding mechanism and the top shoe air cylinder board.
Said ball screw is provided with the worm-and-wheel gear that makes its relative top shoe connecting rod relative motion, and bulb is provided with the spline circle that stops its rotation.
Advantage of the present invention is: 1) increase hydraulic die cushion pressure display mechanism; This mechanism or be arranged on ball bowl piston below not in the past; What reflect is many-sided synthetic press power; And, promptly directly demonstrate real-time press power through improving the situation of change that the position of being put the back can reflect the die cavity press power really, be convenient to operating personnel's timely adjustment; Simultaneously can prevent the vexed car of snap gauge, be convenient to out anti-car; 2 have increased piston alignment pin and alignment pin, make the up-down structure accurate positioning, compactness; 3 have increased the two lead mechanism of the protection demoulding, have improved the guiding and the positioning accuracy of upper punch, have also played the anti-rotation effect to the upper cylinder piston; 4 move to synchronous briquetting machine on the top shoe air cylinder board, and the compaction curve that presses down in the assurance is in full accord, makes the distribution of extrudate density and the raising that uniformity has had matter; Final pressing mechanism adjustment is placed on the top shoe, adjusts more convenient; The present invention has simultaneously increased upper cylinder piston reset buffer unit, and impacting resetting has good protective effect; 5 optimize to have increased and move powder mechanism, make the moulding process of machine obtain further reinforcement.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of compacting guiding mechanism.
1 changes plate for bulb for bulb spline circle, 17 for worm screw, 16 for worm gear, 15 for ball screw, 14 for top shoe connecting rod, 13 for driving crank, 12 for top shoe ball screw guiding mechanism, 11 among the figure;
2 is that top shoe, 3 is that alignment pin, 4 is the piston alignment pin;
5 is that hydraulic die cushion pressure display mechanism, 51 is that upper cylinder piston, 52 is that hydraulic die cushion oil cylinder piston, 53 is that top shoe air cylinder board, 54 is that upper junction plate, 55 is the upper cylinder cushion pad;
6 is that protection mould emptier, 61 is that guide pillar, 62 is fairlead;
7 is that synchronous compacting and final pressing mechanism, 71 are that compacting oil cylinder, 72 is that compacting adjusting screw(rod), 73 is that supporting seat, 74 is negative template synchronously;
8 for powder compaction move powder mechanism, 81 for move the powder cylinder, 82 for locking nut, 83 for moving powder bar contiguous block, 84 for moving powder bar briquetting.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation:
1, top shoe ball screw guiding mechanism 1:
This mechanism: (1), the amount of pressurization to upper punch when being used to suppress are adjusted, i.e. adjustment comprises the top shoe mechanism of top shoe 2; (2) drive top shoe connecting rod 12 by driving crank 11, accomplish the pressurization pressing process of top shoe 2; Pass through the shut height of this mechanism's scalable machine of adjustment when (3) machine assembles; Its process is following: rotate and drive worm gear 14 rotations through driven by motor worm screw 15; Ball screw 13 is by bulb spline circle 16 splines; It can only be moved up and down under the drive of worm gear 14, move up and down, accomplish adjustment process thereby change plate 17 drive top shoe mechanisms by bulb.
2, hydraulic die cushion pressure display mechanism 5:
Operational forces when this mechanism suppresses whole top shoe briquetting machine is monitored in real time, and its principle is an injection pressure oil in the oil pocket between hydraulic die cushion oil cylinder piston 52 and top shoe air cylinder board 53, and this oil pocket is connected with pressure sensor; The pressure that upper junction plate 54 is born from the upper punch on the mould bases; Reach the hydraulic die cushion oil pocket through upper cylinder piston 51 and hydraulic die cushion oil cylinder piston 52, show in real time on touch-screen through PLC again, when another function of this mechanism is the vexed car of machine pressing; Promptly working as upper punch is stuck in former; Can bleed off the pressure oil in the hydraulic die cushion, top unclamped, so that handle upper punch or drive anti-car; Realize being connected with alignment pin 3 through establishing piston alignment pin 4 between top shoe ball screw guiding mechanism 1 of the present invention and the top shoe air cylinder board 53.
3, protection mould emptier 6:
Its operation principle is that top shoe mechanism is behind downward end-of-job under driving crank 11 effects; Upwards make drawback movement; Machine is done demoulding campaign after also promptly suppressing end-of-job, just goods is deviate from the cavity impression on the mould bases, and this process is that former moves downward; And bottom punch is motionless, and then goods are ejected die cavity.For prevent that goods from ftractureing in deviating from process; When upper punch moves on top shoe 2 backhauls, the ventilation of upper cylinder piston 51 upper ends, upper cylinder piston 51 moves downward and drives upper punch and move downward; Although top shoe 2 drives upper punch and moves last; But because the piston rod of upper cylinder piston 51 is moving down, the relative position that makes upper punch be pressed on the goods does not change, and upper punch is compressed on the goods with a constant force all the time; Deviate from die cavity fully until goods, reach the purpose of the protection demoulding.Its course of work is: driving crank 11 drives top shoe 2 and moves downward end, move on the top shoe 2, and demoulding action beginning, the ventilation of upper cylinder piston 51 upper ends moves downward it, and the beginning angle is that beginning finishes to 280 degree about 170 degree; Finish back upper cylinder piston 51 lower ends ventilation, piston reset is up, and an impulse stroke finishes.For preventing that being reset to terminal point produces bump, increase upper cylinder cushion pad 56 here, to reach the purpose of the buffering that resets; In addition for making upper cylinder piston 51 descending reliable and stable, accurate positioning shaping-orientation post guiding mechanisms; Be that upper junction plate 54 connects upper cylinder pistons 51 and by both sides guide pillar 61 guiding; In guide pillar 61 fairleads 62, move up and down, with guiding and anti-rotation upper cylinder piston 51 utmost points and the corresponding construction part that is connected thereof.
4, synchronously the compacting and final pressing mechanism 7:
The operation principle of this mechanism is to come execution through a pair of synchronous compacting oil cylinder 71 that is connected on the top shoe air cylinder board 53; Mechanism moves downwards by top shoe; Driving synchronously, compacting oil cylinder 71 moves down; To being pressed onto on the compacting adjusting screw(rod) 72, driving negative template 74 through supporting seat 73 and force to move down, to reach the upwards purpose of pressurization of bottom punch; The size of pressing stroke is regulated (in fact being exactly the adjusting to the goods volume under pressure) by compacting adjusting screw(rod) 72 synchronously; When negative template 74 is stopped when motionless by following block, top shoe 2 continues to move downward, and suppresses oil cylinder 71 overflow valve overflows synchronously; The oil cylinder piston bar is withdrawn along with moving down of upper punch; Finish fully until last pressurization, promptly top shoe 2 strokes finish fully, promptly for the third time upper punch to the pressurization of goods; Its objective is and improve goods top density, improve the uniformity of extrudate density; Its sequence of movement is: drive top shoe 2 by driving crank 11 and move down; Upper punch gets into die cavity and powder is pressurizeed first; Then synchronous compacting oil cylinder 71 is pushed down compacting adjusting screw(rod) 72 and is driven negative template 74 and moves to certain stroke to pressed, accomplishes pressure process for the second time; This moment, negative template 74 supported blocks stopped motionless; Upper punch continues to move down with top shoe 2, suppresses oil cylinder 71 overflows synchronously, and piston resets along with moving down of upper punch and returns; Upper punch continues to move downward until capable 2 journeys of top shoe and finishes, and accomplishes final pressure process.
5, powder compaction is moved powder mechanism 8:
The purpose that designs this structure is to go up outer step design for being shaped; This mechanism makes the density of outer step be able to guarantee; Comprise moving powder cylinder 81 and being connected to move and move the powder extension bar on the powder cylinder 81, move powder extension bar bottom and connect and move powder bar briquetting through moving powder bar contiguous block 83 through locking nut 82; Its principle is that utilization moves powder cylinder 81 and top shoe 2 together moves down, and next that promotes to be contained on the float plate dashed the position that together moves down into the block location, and float plate is stopped by block, and top shoe 2 continues to press down, and moves the powder cylinder piston rod and withdraws, and outer step is pressed shaping.The design demand of moving powder mechanism is relevant with the dress powder form of former, and the dress powder of outer step is many in the middle of requiring, few up and down, and actual dress powder structure can only realize that upper end dress powder is many; Step broad in the middle is shaped needs more powder, comes press forming in the middle of then need the upper end powder being moved to, and the present invention is at first through moving the characteristics that powder bar briquetting 84 contacts with former; Make former receive a downward power but keep motionless; It receives powder to its downward frictional resistance, and powder receives the former inwall to its downward power conversely, and it is moved downward; Thereby powder is flowed in the middle of the former, thereby guarantee the Forming Quality of goods.

Claims (2)

1. the upper slide block of powder forming machine briquetting machine is characterized in that, comprises that top shoe ball screw guiding mechanism, hydraulic die cushion pressure display mechanism, protection mould emptier, compacting synchronously and final pressing mechanism, powder compaction move powder mechanism;
Wherein said top shoe ball screw guiding mechanism: comprise the top shoe connecting rod by the driving crank transmission, top shoe connecting rod inner chamber is provided with its ball screw that moves up and down relatively, and the lower end of said ball screw connects the top shoe mechanism that comprises top shoe;
Hydraulic die cushion pressure display mechanism: be arranged between top shoe air cylinder board and the upper junction plate; Comprise that the hydraulic die cushion oil cylinder piston that is arranged on top shoe air cylinder board bottom reaches by the hydraulic die cushion oil pocket that forms between the two, the upper cylinder piston that is connected with upper junction plate is established in hydraulic die cushion oil cylinder piston bottom;
The protection mould emptier: comprise the upper cylinder cushion pad that is arranged on upper cylinder piston bottom and is connected with it, lead is established in the upper junction plate both sides, and lead is arranged in the top shoe mechanism, establishes the fairlead that cooperates with lead in the top shoe mechanism;
Suppress synchronously and final pressing mechanism: comprise a pair of synchronous fuel tank that is arranged on top shoe mechanism both sides, the bottom of synchronous fuel tank is established pressure adjustment screw rod, supporting seat and the concave template that links together successively;
Powder compaction is moved powder mechanism: be connected in the top shoe mechanism, comprise move the powder cylinder be arranged on move powder cylinder bottom move powder bar briquetting, move powder bar briquetting and be in the sliding block bottom and at first contact with former;
Realize being connected with alignment pin through establishing the piston alignment pin between top shoe ball screw guiding mechanism and the top shoe air cylinder board.
2. upper slide block of powder forming machine briquetting machine according to claim 1 is characterized in that, said ball screw is provided with the worm-and-wheel gear that makes its relative top shoe connecting rod relative motion, and bulb is provided with the spline circle that stops its rotation.
CN201110376147.7A 2011-11-23 2011-11-23 Upper sliding block pressing mechanism of powder forming machine Active CN102500756B (en)

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Application Number Priority Date Filing Date Title
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CN102500756B CN102500756B (en) 2017-02-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873749A (en) * 2012-09-13 2013-01-16 燕山大学 Demoulding device for processing building boards
RU2510308C1 (en) * 2012-10-18 2014-03-27 Федеральное Государственное Унитарное Предприятие "Научно-Производственное Объединение "Техномаш" Mould for making pellets from powders
CN103737953A (en) * 2013-12-27 2014-04-23 江苏汇田数控机械有限公司 Closed double-crank-shaft precision punch
RU203832U1 (en) * 2020-11-16 2021-04-22 Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" DEVICE FOR PRESSING CERAMIC POWDER MIXTURE

Citations (7)

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Publication number Priority date Publication date Assignee Title
JPS5243179U (en) * 1975-09-23 1977-03-26
CN2887592Y (en) * 2006-01-18 2007-04-11 宁波市北仑新港塑料机械有限公司 Slider of powder forming machine
CN2910549Y (en) * 2006-06-27 2007-06-13 宁波大榭开发区雄剑粉末冶金设备制造有限公司 Up slide element of powder shaping press
CN2928480Y (en) * 2006-06-29 2007-08-01 南京东部精密机械有限公司 Bias slide block type full automatic dry powder press
CN200939704Y (en) * 2006-07-07 2007-08-29 合肥锻压机床有限公司 Slider precision range positioner of hydraulic press
CN101380825A (en) * 2008-07-07 2009-03-11 杭州万达液压机械有限公司 Bulk material forming machine
CN202427947U (en) * 2011-11-23 2012-09-12 扬州市海力精密机械制造有限公司 Upper slider pressing mechanism of powder forming machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5243179U (en) * 1975-09-23 1977-03-26
CN2887592Y (en) * 2006-01-18 2007-04-11 宁波市北仑新港塑料机械有限公司 Slider of powder forming machine
CN2910549Y (en) * 2006-06-27 2007-06-13 宁波大榭开发区雄剑粉末冶金设备制造有限公司 Up slide element of powder shaping press
CN2928480Y (en) * 2006-06-29 2007-08-01 南京东部精密机械有限公司 Bias slide block type full automatic dry powder press
CN200939704Y (en) * 2006-07-07 2007-08-29 合肥锻压机床有限公司 Slider precision range positioner of hydraulic press
CN101380825A (en) * 2008-07-07 2009-03-11 杭州万达液压机械有限公司 Bulk material forming machine
CN202427947U (en) * 2011-11-23 2012-09-12 扬州市海力精密机械制造有限公司 Upper slider pressing mechanism of powder forming machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102873749A (en) * 2012-09-13 2013-01-16 燕山大学 Demoulding device for processing building boards
CN102873749B (en) * 2012-09-13 2016-05-18 燕山大学 A kind of for processing the stripper apparatus of building board
RU2510308C1 (en) * 2012-10-18 2014-03-27 Федеральное Государственное Унитарное Предприятие "Научно-Производственное Объединение "Техномаш" Mould for making pellets from powders
CN103737953A (en) * 2013-12-27 2014-04-23 江苏汇田数控机械有限公司 Closed double-crank-shaft precision punch
RU203832U1 (en) * 2020-11-16 2021-04-22 Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" DEVICE FOR PRESSING CERAMIC POWDER MIXTURE

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