CN102248691A

CN102248691A - Energy-saving precise press with multiple connecting rods

Info

Publication number: CN102248691A
Application number: CN2011100225957A
Authority: CN
Inventors: 张士友; 邢立平
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-20
Filing date: 2011-01-20
Publication date: 2011-11-23

Abstract

The invention discloses an energy-saving precise press with multiple connecting rods, which is different from an eccentric-shaft type press and an eccentric-wheel type press. With the improvement on the awareness of environment protection and energy conservation and the fast development of precision industries, such as precision electronics, automobile parts and the like, requirements on an energy-saving precision press are increased daily. The invention aims to solve technical problems of saving energy sources, particularly electric energy; increasing a nominal travel; prolonging the residence time of a sliding block at a bottom dead center; and applying the press in a lignite fine-press molding process. The technical scheme provided by the invention is as follows: the press realizes low-input high-output by utilizing a double-level structure according to the lever principle; the energy source is saved by more than 80%; the usage amounts of materials, such as bearing steel materials, nonferrous metals and the like, are further reduced, and the domestic energy-saving and exhaust-reducing call is responded; the nominal travel can reach more than 40mm through the utilization of the double-lever structure, a running curve of the sliding block close to the bottom dead center tends to gentle, the residence time of the sliding block at the bottom dead center can reach as long as 1/12 of period and the difficulty of the press as a lignite fine-press molding device is solved.

Description

The energy-conservation fine press of many connecting rods

One, technical field

The present invention is the energy-conservation fine press of a kind of many connecting rods, is widely used in cold warm forging and makes, and technologies such as punching press are still specialized in the forcing press of brown coal pressure-sizing moulding.

Two, background technology

Along with the enhancing of people's environmental consciousness, the profound understanding of the enterprise development aim of raising the efficiency to reducing cost, the traditional eccentric shaft and the forcing press of eccentric wheel type can not satisfy people's demand.Along with precise electronic, the develop rapidly of industries such as auto parts and components is to the also increase day by day of demand of fine press.

Three, summary of the invention

For catering to the call of national energy-saving and emission-reduction, reduce the use amount of bearing steel and materials such as non-ferrous metal, particularly tin bronze, solve the pressure-sizing moulding problem of brown coal.The invention provides a kind of energy-conservation fine press, this forcing press not only power and energy saving reaches more than 80%, has also reduced bearing steel and non-ferrous metal, the use amount of materials such as sealing ring; The nominal pressure stroke can reach more than the 40mm, and has prolonged slide block in the bottom dead centre holdup time.This forcing press can be widely used in cold warm forging to be made, punching press Forging Technologies such as cold drawn punching press, the special equipment of brown coal pressure-sizing moulding especially.

The technical problem that solves: the problem of energy savings, particularly electric energy overcomes the influence to environment; Increase the nominal pressure stroke; Prolong slide block in the holdup time of bottom dead centre, solve the problem of brown coal pressure-sizing moulding special equipment.

Technical scheme: at the energy savings aspect, we have adopted double lever structure (combined mechanism of toggle link structure and boosting lever structure), have realized the high output of low input.Our employed power of motor of the forcing press of same tonnage is lower than tradition; Boosting lever in this structure adopts cast steel material to also have certain damping effect; The boosting lever structure makes stress point different of this forcing press and traditional forcing press, and little to the impact of fuselage when work, the intensity of integral body improves relatively; The running part center of gravity of this forcing press is in the bottom, and transmission is more stable, and noise is low, has reduced the influence to environment.

The pressure curve that adopted the double lever structural change has been realized big nominal force-stroke.This forcing press nominal pressure stroke can reach more than the 40mm, compares with the nominal pressure stroke of 3～12mm of eccentric shaft type forcing press in the past to be improved.For cold drawn punching press etc. the nominal pressure stroke is required bigger technology, on forcing press, realize being resolved.

Utilize the double lever structure, the variation of pressure curve has prolonged the holdup time of slide block at bottom dead centre.Time can reach 1/12 of cycle time, thereby has guaranteed the pressure-sizing moulding process.Forcing press can be realized the one-shot forming of precision components such as gear, bearing in addition, can improve working (machining) efficiency, cuts down finished cost.Adopt the double lever structure, solved big nominal force-stroke, slide block is in the problem of bottom dead centre holdup time, and these 2 also is the difficult point of brown coal pressure-sizing former, the solution of these problems, and the pressure-sizing moulding special equipment that this forcing press becomes brown coal also is achieved.

Four, description of drawings

The present invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is machine shape figure

Fig. 2 is that the P of Fig. 1 is to view

Fig. 3 is the A-A profile of Fig. 1

Fig. 4 is the B-B profile of Fig. 1

Fig. 5 is the C-C profile of Fig. 1

Five, the specific embodiment

Among the figure: 1. 8. 9. pinions of main motor 2. small belt pulley 3. flywheels, 4. clutches 5. 6. pinions, 7. gear wheels, 10. gear wheels, 11. crank axles, 12. cranks, 13. small rods 14. subtract connecting rod 17. lower links 18. slide blocks on power bar 15. big connecting rods 16.

The concrete working condition of this forcing press is as follows:

Main motor (1) among Fig. 1 drives small belt pulley (2) and rotates by the flywheel (3) that the V-belt drives among Fig. 3.Under the effect of clutch (4), axle (5) rotates, and the pinion (6) on the axle (5) is formed transmission with gear wheel (7), drives axle (8) and rotates, and the pinion (9) on the axle (8) is formed transmission with gear wheel (10).Driving crank axle (11) rotates, crank axle (11) drives crank (12) and rotates, crank (12) and small rod (13), subtract power bar (14), form four-bar mechanism, subtract power bar (14) and drive big connecting rod (15) swing, big connecting rod (15) and last connecting rod (16), lower link (17) is formed elbow-bar mechanism, lower link (17) drives slide block (18) and moves up and down, thereby realizes workpiece machine-shaping.

Claims

1. the energy-conservation fine press of connecting rod more than a kind by band transmission and secondary gear transmission, is realized energy-conservation fine press by the double lever structure.Principal character is: utilize lever augmented principle, adopt the double lever structure, utilize boosting lever to realize the high output of low input; Big nominal force-stroke can satisfy various punching presses, cold-extrusion technology; Changed the operation curve of slide block, made slide block long, can be applicable to technologies such as accurate stretching, extrusion modling, mainly solved the pressure-sizing moulding problem of brown coal in the bottom dead centre holdup time at bottom dead centre; With traditional whole eccentric structure, replace with crank axle and crank two bodies, easy to process, drive mechanism moves down, and stable, noise is little.

2. the energy-conservation fine press of many connecting rods according to claim 1 is characterized in that: utilize lever principle, adopt double lever structure (combining structure of elbow-bar mechanism and boosting lever structure), utilize boosting lever to improve laborsaving effect; Realize the high output of low input; Can energy savings reach more than 80%.

3. the energy-conservation fine press of many connecting rods according to claim 1 is characterized in that: adopt dual lever mechanism to realize big nominal force-stroke technology, prolonged the holdup time of slide block at bottom dead centre, make this forcing press become the special equipment of brown coal pressure-sizing moulding.Also can be widely used in technologies such as cold warm forging is made, cold drawn punching press.

4. the energy-conservation fine press of many connecting rods according to claim 1, it is characterized in that: adopt crank axle and crank two body structures, simple bearing pin connects, traditional whole eccentric structure is changed into the structure of two bodies, process convenient, save time, can also make the center of gravity at transmission position move down more stable transmission.