CN2320404Y

CN2320404Y - Simple two-way pressing full-automatic dry powder press

Info

Publication number: CN2320404Y
Application number: CN 98225930
Authority: CN
Inventors: 许云灿; 丁卫忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-01-26
Filing date: 1998-01-26
Publication date: 1999-05-26
Anticipated expiration: 2008-01-26

Abstract

The utility model discloses a two-way pressing fully-automatic dry powder press, relating to mechanical automatic dry pressing equipment which has two-way pressing functions and is suitable for powder metallurgy, ceramic materials, magnetic materials and powdery products in relative industries. The utility model is composed of a machine body dividing an upper and a lower chambers, cross beams, a long draw rod, an upper cross beam, a lower cross beam, a left vertical column and a right vertical column. The utility model is characterized in that a central draw rod is arranged in the upper chamber, the central draw rod positioned in the upper chamber of the machine body is fixed with the cross beams, the central draw rod at the upper part of the cross beams is provided with a device used for forcing a concave die to move, a pressing cross beam is arranged, and the central draw rod at the center of the pressing cross beam is provided with regulating nuts.

Description

The two-way compacting full-automatic dry powder press of simple type

What the two-way compacting full-automatic dry powder press of the utility model simple type related to is a kind of two-way pressing function that has, and is applicable to the automatic dry-pressing formed equipment of mechanical type of powder metallurgy, ceramic material, magnetic material and relevant industries pulverulent product.

The moulding of the simple type dry powder press that uses at present is normally by the movable punch of going up, and movable die and one can be used to adjust that the fixed lower punch of filling amount finishes.In the dress powder stage of pressing process, with spring die is supported on charging position when feeding compacted products, at first, last punch enters concave die cavity, powder is carried out the compression first time, secondly in compression process when the frictional force between compressed dusty material and die inner surface makes the return force that die makes progress greater than support or balance, die is promptly descending with identical speed with last punch.Moving down of this die is equal to upwards pressurizeing of movable lower punch, thereby, to the pressurization of the upper and lower both direction of powder in the die, promptly two-way compacting.Ya Zhi powder blank in this way, its up and down variable density depend on the power that supports die usually, and neutral axis may be not in the central authorities of blank.If when last punch enters concave die cavity, greater than the power that supports die, then can overcome the variation of the density in the dusty material to the die externally applied forces.If externally applied forces equals to support the power of die, then die moves down the speed of above punch downstream rate 1/2.As a result, with the blank from the uniform pressure press forming of upper and lower two directions, its neutral axis is positioned blank central authorities, but this is difficult to accomplish.Owing to continuous stroke frictional force dies down, also relevant simultaneously in addition with the abrasion condition of die, be difficult so want constant Density Distribution of interior maintenance of long period.

The purpose of this utility model is to provide a kind of simple type two-way compacting full-automatic dry powder press at the weak point that present simple type dry powder press exists, has the device of forcing the motion of control die, can carry out bidirectional pressed moulding to the powder material in the die, thereby guarantee that lower density is even on the compacting blank, compacting blank size unanimity.

The two-way compacting full-automatic dry powder press of simple type takes following scheme to realize: the two-way compacting full-automatic dry powder press of simple type has one and is divided into the fuselage of two chambers up and down, bottom chamber is provided with the power transmission component sill that links with machine tool chief axis, two long draws are installed on the fuselage, extend upward by sill, long draw top device has entablature, entablature is connected with the cope match-plate pattern of mould bases by adjusting screw(rod), one center pull rod is arranged in the upper chamber, center pull rod slave planar central hole on one's body protrudes upward with the lower pulling plate of mould bases and is connected, center pull rod is stretched out its end face downwards from the centre bore of the dividing plate of fuselage, the charging nut is by being threadedly connected to the center pull rod bottom, when moving on the pull bar of center, to be limited to certain position, be positioned on the center pull rod section of fuselage upper chamber and be fixed with a crossbeam, a liftout leverage is also fixed in the crossbeam below on center pull rod.Between crossbeam lower surface and fuselage dividing plate, also be provided with the die back-moving spring.Crossbeam central upper portion pull bar is provided with the device of forcing the motion of control die, force the device of control die motion to have the compacting crossbeam, the compacting crossbeam is sleeved on the center pull rod, adjusting nut is equipped with at center pull rod place, compacting crossbeam middle part, compacting crossbeam two ends and two long draws are fixedly connected, compacting crossbeam and adjusting nut are positioned at the crossbeam top, and can slippage on center pull rod.But adjusting nut is connected and step-less adjustment by screw thread with the compacting crossbeam, and the compacting crossbeam forces to control how much die is momental adjusts by adjusting nut.Compacting crossbeam and two long draws are fixedly connected, and drive the compacting crossbeam when two long draws move up and down and move up and down, and force crossbeam to drive die when the adjusting nut on the compacting crossbeam contacts with crossbeam by force and move downward synchronously.Left and right column is arranged above the fuselage, mount pad for mould bases, mould bases is by cope match-plate pattern, concave template, support plate, lower pulling plate, upper and lower guide pillar are formed, the support plate of mould bases just is installed in above the left and right column, last punch is installed on the cope match-plate pattern, and die is installed on the concave template, and lower punch is installed on the support plate.If core bar need be arranged, core bar can be installed on the lower pulling plate.

The two-way compacting full-automatic dry powder press of simple type is reasonable in design, easy to use, owing to be provided with a device of forcing the control die to move, when last punch enters die, the powder in the die carried out going up for the first time and can force to control upward that punch and die move downward (lower punch is motionless) synchronously thereby can the powder in the die be pressed down once more after pressing, it is two-way compacting, it is the problem of difficulty that thereby the simple type dry powder press institute pressed compact spare that has solved present use will keep a constant Density Distribution in a long time, guarantee the compacting blank that has accurate same size producing by batch, and can control accurately adjustable optimum density distribution, guaranteed the quality of compacting blank.

The utility model is described in further detail below with reference to accompanying drawing.

Fig. 1 is the two-way compacting full-automatic dry powder press of a simple type structural representation.

Has a fuselage 1 that is divided into the A of upper chamber, lower chambers B with reference to the two-way compacting full-automatic dry powder press of accompanying drawing simple type primary structure, sill is connected with square slide block 3 by the crank shaft 24 in it again in lower chambers B, thereby can make sill 2 lifting freely with the rotation of bent axle 24; Be fixed with two long draws 23 that extend upwardly to body upper in sill 2 both sides, the upper end of the two long draws entablature 18 that is connected, entablature 18 is connected with the cope match-plate pattern 15 of mould bases 14 by adjusting screw(rod) 17, cope match-plate pattern 15 is contained on the top guide bar 16 and can slides up and down, top guide bar is fixedly mounted on the concave template 13, last punch 19 is installed on the cope match-plate pattern 15, so that the lifting with sill 2 is synchronized with the movement punch 19 up and down, one center pull rod 5 is arranged in the A of fuselage upper chamber, center pull rod 5 slaves planar central hole on one's body protrude upward with the lower pulling plate 11 of mould bases 14 and are connected, core bar 22 (if the compacting blank does not need core bar just needn't install) can be installed on the lower pulling plate 11, notch board 13, lower pulling plate 11 is connected by lower link 25, and lower link 25 can move up and down on support plate 12, die 20 is installed on the concave template 13, die 20 like this, core bar 22 can be with center pull rod 5 lifting campaigns, center pull rod 5 lower ends put in the B chamber from fuselage 1 dividing plate centre bore, its lower end car has screw thread, one charging nut 4 and its screw-threaded engagement, and be resisted against on the dividing plate with an end face, thereby be limited to a certain position when moving on the center pull rod 5, by this charging nut 4 of last backspin can regulate center pull rod 5 and the core bar 22 that is attached thereto and die 20 in the position of when filling with substance; Also fix a crossbeam 7 on 5 sections of the center pull rod in fuselage 1 A of upper chamber in addition, and the dividing plate of the lower surface of described crossbeam 7 and fuselage 1 between also be provided with die back-moving spring 26, on fuselage 1 Plane Installation have left and right column 10,10 ', and as the mount pad of the support plate 12 of mould bases 14, lower punch 21 is installed on the support plate 12, and maintains static.On 5 sections of center pull rod between the dividing plate of the above crossbeam 7 and fuselage, also fixing liftout leverage 6 in addition.

The two-way compacting full-automatic dry powder press of simple type of the present utility model is provided with the device of forcing 20 motions of control die; This forces the device of control die 20 motions to comprise compacting crossbeam 9, adjusting nut 8, crossbeam 7 and two long draws 23.In pressing process, along with the rotation of crank shaft 24, drive sill 2 liftings freely, such two long draws 23 are also knee-action thereupon, the last punch 19 that links to each other with two long draws 23 and suppress crossbeam 9 and also move up and down synchronously.Adjust the screw-in length of adjusting nut 8 at compacting crossbeam 9, adjustable seamless system crossbeam 9 is promptly adjusted the distance of forcing control die and last punch to be synchronized with the movement by the distance of 8 pairs of crossbeams of adjusting nut, 7 effects.So just can suppress the central core Height Adjustment of blank to difference, so just can reach two-way compacting and guarantee that accurately the optimal density of control compacting blank distributes.

The operating process of contrast accompanying drawing 1 illustrated embodiment: earlier according to required work loading height adjustment charging nut 4, so that die 20 is in required charging position under the effect of back-moving spring 26, under the control of the power part of lathe, adjust the lifting of adjusting screw(rod) 17, make the height dimension of compacting blank reach required size.Make punch 19 get back to peak then, it is even in the Density Distribution that the screw-in length of compacting crossbeam 7 guarantees to suppress blank to adjust adjusting nut 8.When press is worked like this, last punch 19 at first carries out going up the first time to the powder in the die 20 presses, at this moment suppress crossbeam 9 and adjusting nut 8 is also descending, inconsistent until adjusting nut 8 and crossbeam 7, then go up punch 19, die 20, core bar 22, compacting crossbeam 9, adjusting nut 8, crossbeam 7, center pull rod is DL synchronization together, powder in the mould is carried out the compacting second time promptly to press down, in this section pressing process, the lower punch 21 and the die 20 of stationary fixing, the relative motion of core bar 22 and constitute two-way compacting on the ordinary meaning forwards crank throw to until crank shaft 24 and is in minimum point; Last punch gos up gradually, and die 20, core bar 22 stay for some time earlier under 6 effects of liftout leverage, continues descendingly then, is in the demoulding position of sustained height until die 20, core bar 22, lower punch 21; After the demoulding finished, under the effect of die back-moving spring 26, die 20, core bar 22 returned to charging position again to wait for the beginning of pressing process next time.

Claims

1, the two-way compacting full-automatic dry powder press of a kind of simple type, have one and separate the fuselage of two chambers up and down, bottom chamber is provided with the power transmission component sill that links with machine tool chief axis, two long draws are installed on the fuselage, extend upward by sill, long draw top device has entablature, a left side is arranged above the fuselage, right column, mount pad for mould bases, it is characterized in that a center pull rod is arranged in the upper chamber, center pull rod slave planar central hole on one's body protrudes upward with the lower pulling plate of mould bases and is connected, center pull rod is stretched out its end face downwards from the centre bore of the dividing plate of fuselage, the charging nut is regulated charge by being threadedly connected to the center pull rod bottom, is positioned to be fixed with one on the center pull rod section of fuselage upper chamber and to suppress crossbeam; This crossbeam is provided with the device of forcing the motion of control die, force the device of control die motion to have the compacting crossbeam, the compacting crossbeam is sleeved on the center pull rod, adjusting nut is equipped with at compacting crossbeam central part center pull rod place, compacting crossbeam two ends and two long draws are fixedly connected, compacting crossbeam and adjusting nut are positioned at the crossbeam top, can slippage on center pull rod.

2, the two-way compacting full-automatic dry powder press of simple type according to claim 1, it is characterized in that forcing controlling in the device of die motion adjusting nut with suppress crossbeam and be connected by screw thread, but and step-less adjustment.

3, the two-way compacting full-automatic dry powder press of simple type according to claim 1 is characterized in that mould bases is made up of cope match-plate pattern, concave template, support plate, lower pulling plate, upper and lower guide pillar, and the support plate of mould bases is installed in above the left and right column.

4, the two-way compacting full-automatic dry powder press of simple type according to claim 1 is characterized in that also fixing a liftout leverage below the crossbeam on center pull rod.