CN201150954Y

CN201150954Y - Oil press

Info

Publication number: CN201150954Y
Application number: CNU2007200925915U
Authority: CN
Inventors: 王玉林; 李明宇; 李克敏; 王卫平; 韩宇; 李超; 陈文辉; 侯晓东
Original assignee: HENAN YINGWEI DONGFENG MACHINE CO Ltd
Current assignee: HENAN YINGWEI DONGFENG MACHINE CO Ltd
Priority date: 2007-10-30
Filing date: 2007-10-30
Publication date: 2008-11-19
Anticipated expiration: 2017-10-30

Abstract

The utility model relates to an oil hydraulic press, which is suitable for metal hot extrusion molding production. The oil hydraulic press is composed of a frame, a hydraulic cylinder, a movable crossbeam, a guiding mechanism and an ejecting mechanism, wherein the hydraulic cylinder is installed on the upper portion of the frame, a piston of the hydraulic cylinder is connected with the movable crossbeam, an upper die is fixedly connected on the movable crossbeam, a lower die is located in a die holder, the die holder is fixed on a supporting base which is integrated with the frame, the ejecting mechanism is composed of a left draw rod, a right draw rod, an ejecting crossbeam, a big push rod and a small push rod, wherein the upper ends of the two draw rods are respectively connected on the movable crossbeam, the lower ends are respectively extended from upper holes of the supporting base and then are connected with the ejecting crossbeam, the top portion of the small push rod is located in the lower die, the lower end of the small push rod is extended from the upper hole of the supporting base, and the big push rod is fixed on the ejecting crossbeam and is located on the positive lower end of the small push rod. The guiding mechanism is located on four corners of the frame and comprises a guide rail, a guide rail holder, a fixed block and a regulating screw bolt, wherein the movable crossbeam is matched with the guide rail and slides correspondingly. The oil hydraulic press can satisfy the demands of the hot extrusion molding technique of pushing workpieces in short time and can guarantee the perpendicularity of movable crossbeam movements.

Description

Hydraulic press

Technical field

The utility model relates to a kind of hydraulic press, is specially adapted to the metal fever extrusion modling and produces.

Background technology

Hydraulic press generally is made of frame, hydraulic cylinder, moved cross beam, guiding mechanism, ejecting mechanism, hydraulic cylinder is installed in upper rack, and hydraulic cylinder piston is connected with moved cross beam, and patrix is fixedly connected on the moved cross beam, counterdie is positioned at die holder, and die holder is fixed on the bearing.The hydraulic cylinder piston motion drives moved cross beam and moves up and down, and drives patrix the workpiece blank that is placed in the counterdie is pushed the generation shaped article.Guiding mechanism is used for the vertically-guided that moved cross beam moves up and down, and guarantees the accurate matched moulds of mould up and down, thereby guarantees the quality of workpiece, and ejecting mechanism is mounted in the hydraulic cylinder that ejects of bearing bottom, ejects the bottom that hydraulic cylinder piston aligns workpiece.Hydraulic cylinder piston move downward drive patrix finish with the counterdie effect with the workpiece blank extrusion modling after, stop after driving the up disengaging workpiece of patrix and reaching stroke, eject hydraulic cylinder works then workpiece ejected counterdie, finish the extrusion modling operation one time.Guiding mechanism adopts four jiaos four columns are set, and moved cross beam is enclosed within the structure that four columns slide, and realizes guiding by four columns.

The ejecting mechanism that above-mentioned hydraulic press adopts is not suitable for the hot extrusion molding production technology.Because press the hot extrusion molding technological requirement, workpiece is under 1080 ℃ of temperature, to in the extremely short time, finish by the process of blank to finished product, if exceed the time of process stipulation, counterdie and patrix (claiming drift again) rise because of the workpiece heat transfer temperature, thereby annealing causes hardness to reduce, and workpiece does not reach the follow-up temperature of heat-treating of extrusion process because of exothermic temperature descends simultaneously.Eject hydraulic cylinder and eject workpiece and adopt, to need after the up end of patrix (drift), could start and eject hydraulic cylinder works workpiece is ejected, this process time is long, can not guarantee to satisfy technological requirement.In addition, adopt moved cross beam and the column guiding that is slidingly matched,, be difficult for the perpendicularity that the assurance patrix moves, have influence on product quality because the gap between moved cross beam and column is big and the gap is non-adjustable.

Summary of the invention

The purpose of this utility model provides a kind of hydraulic press, be specially adapted to hot-pressed production, can realize that piston drives patrix (drift) and workpiece ejected up the time, whole hot extrusion activity time is short, can satisfy the hot extrusion molding technological requirement, guiding mechanism can guarantee the perpendicularity of moved cross beam motion simultaneously.

For achieving the above object, the technical solution of the utility model is: a kind of hydraulic press, being specially adapted to the product hot extrusion produces, by frame, hydraulic cylinder, moved cross beam, guiding mechanism, ejecting mechanism constitutes, hydraulic cylinder is installed in upper rack, its piston is connected with moved cross beam, patrix is fixedly connected on the moved cross beam, counterdie is positioned at die holder, die holder is fixed on the bearing with the frame one, it is characterized in that: described ejecting mechanism by about two pull bars, eject crossbeam, big push rod, little push rod is formed, two pull bar upper ends are connected on the moved cross beam about described, the lower end is stretched out the back respectively from the bearing and is ejected crossbeam and be connected in the hole, little push rod top is positioned at hole from the bearing, its lower end of counterdie and stretches out, greatly push rod be fixedly connected on eject on the crossbeam and with little push rod to being sitting at little push rod lower end.

Described guiding mechanism is positioned at four jiaos of frame, comprise guide rail, track base, fixed block, adjustment bolt, described track base is that the cross section is rectangular of right angled triangle, track base is connected with bolt with the T type groove of frame by horizontal direction on the frame, fixed block and frame are integral, and adjust bolt thread and are connected on the fixed block, and its afterbody stretches out and contacts track base, guide rail is fixed on the plane, hypotenuse place of right triangular cross-sectional of track base, and moved cross beam and guide rail cooperate relative slip.

The utility model is by being provided with the pull bar of hydraulic press moved cross beam uplink synchronization, ejecting crossbeam, big push rod, after hydraulic press is finished die mould its piston drive patrix up in, drive ejecting mechanism shaping workpiece is ejected counterdie, satisfied the requirement that hot extrusion molding technology ejects workpiece at short notice.Guiding mechanism can be adjusted the position of track base by adjusting bolt, thereby adjusts the gap between guide rail and the moved cross beam, has guaranteed the perpendicularity of moved cross beam motion, thereby can guarantee the quality of hot-extruded product.

Description of drawings

Fig. 1 is the utility model structural representation, is that the die mould back piston is up, and patrix (drift) will leave workpiece, and big push rod will contact little push rod to carry out workpiece and eject preceding state diagram.

Fig. 2 is ejecting mechanism state diagram when workpiece is not ejected counterdie fully.

Fig. 3 be among Fig. 1 along the A-A cutaway view, express the guiding mechanism structure.

Fig. 4 is the zoomed-in view of Y among Fig. 3.

The specific embodiment

As shown in Figure 1, hydraulic press is by frame 1, hydraulic cylinder 2, moved cross beam 3, guiding mechanism, ejecting mechanism constitutes, hydraulic cylinder 2 is installed in frame 1 top, its piston is connected with moved cross beam 3, patrix 4 (drift) is fixedly connected on the moved cross beam 3, counterdie 5 is positioned at die holder, die holder is fixed on the bearing 6, bearing 6 is integral with frame 1, ejecting mechanism by about two

pull bars

7,8, eject crossbeam 12, big push rod 11, little push rod 10 is formed,

pull bar

7,8 upper ends are connected on the moved cross beam 3, after stretching out in the hole of lower end from the bearing 6 respectively with eject crossbeam 12 and be connected, little push rod 10 tops are positioned at counterdie 5 and are positioned at the position of bottom, and stretch out in the hole on die holder and the bearing 6 its lower end, and big push rod 11 is fixedly connected on to eject on the crossbeam 12 and with 10 pairs of little push rods and is sitting at little push rod 10 lower ends.

As Fig. 1, Fig. 3, shown in Figure 4, guiding mechanism is positioned at four jiaos of frame 1, comprise guide rail 15, track base 13, fixed block 14, adjust bolt 17, track base 13 is rectangular of right angled triangle for the cross section, track base 13 is connected by the horizontally disposed T type groove 16 usefulness bolts 18 on the frame 1 with frame 1, fixed block 14 and frame 1 welding, adjusting bolt 17 is threaded on the fixed block 14, its afterbody stretches out and contacts on track base 13, guide rail 15 is fixedly connected on the plane, hypotenuse place of right triangular cross-sectional of track base 13, and moved cross beam 3 and guide rail 15 cooperate relative slip.

Shown in Figure 1 is that the die mould back piston is up, and patrix 4 (drift) will leave workpiece 19, and big push rod 11 will contact state diagram when workpiece is ejected of little push rod 10 bottoms.

Fig. 2 is behind state shown in Figure 1, and piston continues up the drive by

pull bar

7,8 and ejects crossbeam 12, big push rod 11, state diagram when big then push rod 11 is conflicted behind the little push rod 10 workpiece 19 also do not ejected counterdie 5 fully.After piston stroking upward drove patrix 4 (drift) disengaging workpiece 19, ejecting mechanism ejected counterdie with the continuation uplink synchronous of piston with workpiece 19.Have adjustable nut 9 on the

pull bar

7,8, revolve about on adjustable nut 9 and the pull bar 7 on the hypomere and be threaded, by the length of rotation adjusting nut 9 compensation linkages 7, to be suitable for the needs that different workpieces ejects.

During work, the workpiece blank that is heated to 1080 ℃ is placed in the counterdie 5, the piston of hydraulic cylinder 2 is descending fast under the driving of hydraulic power, ejecting crossbeam 12 is simultaneously driven by pull bar with deadweight, with moved cross beam 3 DL synchronizations, when patrix 4 (drift) when touching workpiece blank, big push rod 11 breaks away from little push rod 10, little push rod 10 heads and counterdie 5 form workpiece profile die cavity, patrix 4 (drift) continues to be depressed into desired location, makes the workpiece blank distortion be full of die cavity, and patrix 4 (drift) forms inner chamber, form product, finish pressure-type process.Commutate by hydraulic valve, make hydraulic cylinder 2 piston stroking upwards, moved cross beam 3

drives pull bars

7,8, ejects crossbeam 12, big push rod 11 uplink synchronizations, when patrix 4 (drift) is thrown off the workpiece certain position, big push rod 11 contacts with little push rod 10, promote little push rod 10 and workpiece 19 is ejected counterdie 5, the shaped article discharging.

In Fig. 1, Fig. 3, the guiding mechanism shown in Figure 4, when adjusting gap between moved cross beam 3 and the guide rail 15 according to the wearing and tearing 15 of guide rail or other situation needs, unclamp the bolt 18 that head is positioned at T type groove 16, regulate track base 13 front and back positions by adjusting bolt 17, can realize the adjustment in gap between moved cross beam 3 and the guide rail 15, after adjusting to the right place, fastening bolt 18, track base 13 is fixing.

Claims

1, a kind of hydraulic press, being specially adapted to the product hot extrusion produces, by frame, hydraulic cylinder, moved cross beam, guiding mechanism, ejecting mechanism constitutes, hydraulic cylinder is installed in upper rack, its piston is connected with moved cross beam, patrix is fixedly connected on the moved cross beam, counterdie is positioned at die holder, die holder is fixed on the bearing with the frame one, it is characterized in that: described ejecting mechanism by about two pull bars, eject crossbeam, big push rod, little push rod is formed, two pull bar upper ends are connected on the moved cross beam about described, the lower end is stretched out the back respectively from the bearing and is ejected crossbeam and be connected in the hole, little push rod top is positioned at hole from the bearing, its lower end of counterdie and stretches out, big push rod be connected eject on the crossbeam and with little push rod to being sitting at little push rod lower end.

2, hydraulic press according to claim 1, it is characterized in that: described guiding mechanism is positioned at four jiaos of frame, comprise guide rail, track base, fixed block, adjustment bolt, described track base is that the cross section is rectangular of right angled triangle, track base is connected with bolt with the T type groove of frame by horizontal direction on the frame, fixed block and frame are integral, adjusting bolt thread is connected on the fixed block, its afterbody stretches out and contacts track base, guide rail is fixed on the plane, hypotenuse place of right triangular cross-sectional of track base, and moved cross beam and guide rail cooperate relative slip.