CN2033713U

CN2033713U - Block balance device of blanking press

Info

Publication number: CN2033713U
Application number: CN 88208797
Authority: CN
Inventors: 郑兰石
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-21
Filing date: 1988-07-21
Publication date: 1989-03-08

Abstract

The utility model discloses a slide block balance device of a blanking press, which comprises an upper support plate fixed on a blanking press body, a lower support plate hung on the lower side of the upper support plate, an elastic member arranged on the lower support plate, a pulling mechanism of which the upper end is connected to the elastic member and the lower end passes through the lower support plate, and a travel diminishing mechanism of which upper end is hinged at the lower end of the pulling mechanism and the lower end is hinged at the slide block of the blanking press. By the balance device, the amplitude of balance fluctuation of a slide block can be decreased so as to solve the problems of tilting the slide block, influencing on kinematic accuracy, decreasing service life and having big noise caused by the balance sudden increasing with the downward movement travel increasing of the slide block; the utility model contributes to improving the braking accuracy while parking.

Description

Block balance device of blanking press

The utility model relates to a kind of slide block bascule that is used for pressing equipment, in order to the equilibrant force of balance slide block.

At present, the pressing equipment (as forcing press, punch press etc.) that China the produces positive clutches that adopt exist that slide block stops in emergency on can not be at an arbitrary position more and slide block causes the shock problem of stressed part between transmission system and connecting rod slider in advance when moving downward.Done research for addressing these problems domestic many units, developed rotating key clutch poke-rod type emergency stop (apparatus) (having obtained Chinese invention patent, application number 86102441) as Harbin Institute of Technology.But also there are some obvious weak points in this patent of domestic application behind 40 tons of punch presses, when promptly stopping the impact of slide block and connection rod sphere very big, not only noise is big, and easily makes on the slide block fracture of spherical cap plate bolt.In addition, the parking spot precision is not enough.Its reason is that the slide block equilibrant force is not reduced, so that the problems referred to above occur.

The purpose of this utility model provides a kind of slide block bascule that is used for pressing equipment (as punch press, forcing press etc.), is used for the equilibrant force of balance slide block, avoids taking place the problems referred to above.

The scheme that realizes above-mentioned purpose is: a kind of pressing equipment slide block bascule, it comprises that one is fixed in the upper bearing plate on the pressing equipment fuselage, one is lifted on the lower support plate of upper bearing plate below, one rests the elastic component on the lower support plate, one its upper end is connected on the elastic component and its lower end passes the draw-off mechanism of lower support plate, and its upper end is articulated in the draw-off mechanism lower end and the hinged stroke of its lower end and slide block dwindles mechanism.

Elaborate structure of the present utility model, characteristics and advantage below in conjunction with an embodiment of the present utility model shown in the drawings.

Fig. 1 is the front view (partly cut-away) of expression the utility model one embodiment;

Fig. 2 is the cutaway view along " A-A " among Fig. 1, wherein represents that with double dot dash line the pressing equipment (as punch press) and the installation of the utility model bascule concern;

Fig. 3,4 and 6 is respectively along the profile of " B-B ", " C-C " and " E-E " among Fig. 1;

Fig. 5 is the profile along " D-D " among Fig. 2.

As shown in Figure 1, 2, on the fuselage (illustrating) of pressing equipment (as punch press), this bascule has been installed with double dot dash line.By four screws 3 upper bearing plate 1 firmly is contained on the fuselage.Near two minor face places a screwed hole is arranged respectively on the longitudinal centre line of upper bearing plate 1, be screwed into two long studs 7 in this two screw, its upper end is anchored on the upper bearing plate 1 by nut.The lower end of long stud 7 is connected in a lower support plate 10 by nut.Except the through hole that installs long stud 7 usefulness, on the heart position through hole is arranged therein on the lower support plate 10, thereon the surface go up to also have one with through hole concentric, diameter is greater than the flat round pit of through-hole diameter; On its lower surface, it vertically has the shallow slot of two different in width that are communicated with through hole from above-mentioned through hole both sides in the lateral mid-point upper edge.

The cylinder-shaped compression spring 8 that diameter is slightly less than above-mentioned flat round pit is placed vertically in the flat round pit on the upper surface of above-mentioned lower support plate 10, and nationality is to play position-limiting action to the lower end of described stage clip 8.Put in the upper end of stage clip 8 and to put a spring base 5.There is a through hole in the microcephaly's of spring base 5 central authorities.One groove concentric with this through hole arranged on its big head surface.Between described through hole and groove, be positioned at spring base inside, be a cavity that is communicated with the above two.Also have a flange on the major part of spring base 5, the upper end of above-mentioned stage clip 8 just is crushed on this flange.In addition, pass the small through hole of groove on through hole, cavity and the major part outer surface of stage clip 8, spring base 5 and lower support plate 10, be the drawing head 11 that a stud 9 and is " Jiong " shape, it is screwed on the lower end of stud 9, and by nut both is firmly linked together.One pressing plate 4 is pressed in the groove on the major part outer surface of above-mentioned spring base 5 with a nut on the upper end of stud 9.Above-mentioned stud 9, drawing head 11, spring base 5, pressing plate 4 and nut have been formed draw-off mechanism 2, are used to be subjected to downward external force and compression press spring 8.

The lower end of above-mentioned drawing head 11 and one links to each other the reducible flexible iron gate of stroke mechanism 13.Should flexible iron gate mechanism 13 mainly form by four groups every group group in flakes that comprises two big outer braces 15 and a slice imperial palace brace 18 and with the little interior brace 24 of two little outer braces 23, a slice of linking to each other of organizing the most in flakes of below, shown in Fig. 1,2,3,4,6 it.Above-mentioned four groups length, the width of totally ten two braces all equate.Through hole is all arranged on the center of each brace and the two ends, and the hole on the big outer brace 15 is littler, and the hole on the imperial palace brace 18 more greatly.Respectively be pressed into a lining 17 in three holes on imperial palace brace 18, every imperial palace contact pin 18 folded up in two big outside between the brace 15, and make the through-hole alignment in three centre, and penetrate a fraising screw 16 again, with spring washer and nut appropriateness the three is twisted the jail then.This screw 16 is to pierce into lining 17 in the centre through hole of above-mentioned imperial palace brace 18, can freely swing between the inside and outside big brace 18 and 15.In addition, the lower end of the imperial palace brace 18 in last one group of brace group is to be clipped between the upper end of two big outer braces 15 of next group, and the lower end of two last one group big outer braces 15 is the both sides of upper end that are clipped in a slice imperial palace brace 18 of next group, mode as shown in Figure 3 is connected in turn upper and lower group, so also hingedly between the brace up and down can freely swing mutually.Length be half above-mentioned a slice of above-mentioned big brace little in brace 24 and two little outer braces 23 also by as the mode of Fig. 3 with below organize greatly in flakes and be hinged.

As shown in Figure 5, the lower end of brace 24 was sandwiched between the lower end of two little outer braces 23 in above-mentioned a slice was little, and in like manner, the endoporus of a lining 27 that is pressed in the little interior through hole that connects on 24 lower ends is also aimed at two through holes on little outer brace 23 lower ends.Two little outside the both sides of brace 23 lower ends accompany a joint 12 that is down " Qian " shape.The top of this joint 12 is two tongue pieces that separate, and lays respectively at the outside of the lower end of above-mentioned two little outer braces 23, all is equipped with a through hole on two tongue pieces, wherein is pressed into a lining 26 in the through hole.Successively pass the lining 26 in the through hole on another tongue piece of the through hole of the little outer brace of lining 27, another sheet 23 lower ends in the little interior brace 24 lower end through holes of through hole, a slice on the little outer brace of through hole, a slice 23 lower ends on the tongue piece of above-mentioned joint and joint 12 with a connecting axle 25 again, put spring washer, nut etc. then into, appropriateness connects the jail with above-mentioned each part, and makes mutually and can freely swing relatively.In addition, a through hole is arranged, in this hole, penetrate a tailing axle 14 in the bottom of described joint 12.And it firmly is tightened on the joint 12 with spring washer, nut etc.The overhanging end of tailing axle 14 then is to be used for linking to each other with the slide block of punch press, as shown in Figure 2.

Shown in Fig. 1,4,6, first group big in flakes two in the group big outside in the through hole of upper end of brace 15, penetrated a fraising screw 19, between this two brace, the lining 22 that has been positioned on the middle part of above-mentioned fraising screw 19 close-fitting, on this lining again close-fitting a ball bearing 20, outside two slice adjacent with the left and right sides of the inner ring of this bearing are big, between the brace 15, a back-up ring 21 is arranged respectively, with nut etc. above-mentioned each part appropriateness is close to, bearing 20 can freely be rotated.In like manner,, also loaded onto two ball bearings 29 and two back-up rings 31, bearing 29 can freely be rotated with fraising screw 30 in the upper end of a slice imperial palace brace 28.

As shown in Figure 1, under the elastic force of stage clip 8, by draw-off mechanism 2, two place's bearings 20 and 29 of the topmost that is contained in described flexible iron gate mechanism 13 are close in two shallow slots on the lower surface of above-mentioned lower support plate 10 all the time, be that single bearing 20 shown in Figure 4 is close in the narrow slightly shallow slot all the time, and duplex bearing 29 shown in Figure 6 is close in the wideer slightly shallow slot.Therefore, when the above-mentioned joint 12 of external force pulling downwards, by the transmission of described flexible iron gate mechanism 13, make above-mentioned bearing 20 and 29 respectively in narrow groove and sipes, be close to groove bottom and roll by the center of the above-mentioned lower support plate 10 of extroversion; On the contrary, when joint 12 upwards returns, the bearing at this two place just along residing groove separately by the centre of lower support plate 10 to outer rolling.

Connect the slide block bascule that above-mentioned structure is formed, when the slide block of pressing equipment (as punch press) moved downward rapidly, each the inside and outside brace that will form flexible iron gate mechanism 13 by joint 12 affected.The characteristics of this flexible iron gate mechanism are: when joint 12 when the pin joint of the little inside and outside brace 24,23 of below moves down certain one stroke, upwards transmitting the corresponding stroke that the back causes on the pin joint of drawing head 11 and the big inside and outside brace 18,15 of the top has then dwindled greatly, therefore, make the deflection of stage clip 8 compressions through stay mechanism 2, it is the stroke of an above-mentioned back pin joint, also the purpose by the present invention's design becomes less, thereby has obviously reduced the amplitude of variation of the equilibrant force in ram travel.As being example with J23-16 type forcing press, after adopting the present embodiment bascule, the maximum variable quantity of equilibrant force in ram travel is about 6.2% as calculated, and connecting rod slider can stop in 0.03 second.Like this, utilize this bascule to solve that equilibrant force moves downward the increase of stroke along with slide block and thereby hurried increase causes slider tilt and influence the problem of kinematic accuracy, reduction die life, and reduced impact noise, help to improve the brake accuracy when stopping.

Claims

1, a kind of pressing equipment slide block bascule, comprise a upper bearing plate 1 that firmly links to each other with the pressing equipment fuselage, it is characterized in that also comprising that one is lifted on the lower support plate 10 of the below of described upper bearing plate 1, one rests the elastic component 8 on the described lower support plate 10, one its upper end is connected in that its upper end of draw-off mechanism 2, that on the described elastic component 8 and its lower end passes described lower support plate 10 is articulated in the lower end of described draw-off mechanism 2 and the hinged stroke of its lower end and pressing equipment slide block dwindles mechanism 13.

2, slide block bascule as claimed in claim 1, it is characterized in that along respectively being screwed into a stud 7 in two screwed holes of the both sides that equate apart from centre distance on the longitudinal centre line of described lower support plate 10, and its upper end is firmly linked to each other with described upper bearing plate 1.One through hole is arranged on the center of lower support plate 10, on the upper and lower surface of described lower support plate 10, have respectively one concentric, diameter with described through hole greater than the flat round pit of through-hole diameter and two on the lateral mid-point of described lower support plate 10, longitudinally from described through hole both sides and this through hole shallow slot that be communicated with, different in width.

3, slide block bascule as claimed in claim 1 is characterized in that described elastic component 8 is cylindrical stage clips, and put in the flat round pit that is placed on described lower support plate 10 upper surfaces its lower end, and its diameter is slightly less than the diameter of described flat round pit.

4, slide block bascule as claimed in claim 1, it is characterized in that described draw-off mechanism 2 comprises that one is installed in the described stage clip 8, the through hole of described lower support plate 10 is stretched out in its lower end and its upper end passes the stud 9 of the upper surface of described stage clip 8, one has the spring base 5 that a flange and that is enclosed within the diameter that the outer endoporus of the top thread segment of described stud 9 and a diameter be slightly larger than described stage clip 8 is positioned at the round pit on the described flange outer surface, described flange inner shoulder is pressed on the upper surface of described stage clip 8, one diameter is slightly less than the diameter of described round pit, the upper end that its center one small sircle hole is enclosed within described stud 9 makes it be located in pressing plate 4 in the round pit on described spring base 5 flange outer surfaces, by a nut that is screwed in the upper end of described stud 9 described pressing plate 4 is pressed on the described spring base 5, passes the through hole of described lower support plate 10 and lean on a nut that the lower end of its top with described stud 9 firmly linked to each other with one, its underpart is the drawing head 11 of " Jiong " shape structure.

5, slide block bascule as claimed in claim 1, it is characterized in that it is a flexible iron gate mechanism 13 that described stroke dwindles mechanism, it comprise adjacent four groups every group by length, the big group in flakes that wide identical two big outer braces 15 and a slice imperial palace brace 18 are formed and with the two little outer braces 23 of half that are described big brace of the biggest length of organizing adjacency in flakes of below, brace 24 in a slice is little, two big outer braces 15 in described every big group in flakes are clipped in the both sides of imperial palace brace 18 and are articulated on their central point by this, last one big group in flakes greatly outside (interior) brace 15(18) the bottom be clipped in (being sandwiched in) next imperial palace (outward) brace 18(15 that organizes greatly in flakes) or little interior (outward) brace 24(23) the upper end both sides (centre) and be hinged together.

6, as claim 1 or 5 described slide block bascules, it is hinged to it is characterized in that described stroke dwindles the upper end of bottom and " Qian " shape joint 12 of the two little outer braces 23 in below of mechanism 13 and a little interior brace 24, hinged one tailing axle 14 that is used to connect slide block on the bottom of described joint 12.

7, slide block bascule as claimed in claim 5, it is characterized in that described stroke dwindle the big group in flakes in the top in the mechanism 13 two described big outer braces 15 the upper end between and the both sides of the upper end of the described imperial palace brace 18 of a slice utilize respectively fraising screw 19 and 30 and corresponding nut be coated with one and two ball bearings 20 and 29, distance is slightly less than the width of the big shallow slot of the little shallow slot of width on the lower surface of described lower support plate 10 and width respectively between the lateral surface of the width of described ball bearing 20 and two ball bearings 29.